unknown Initial ITS Start location: l9 Program variables: choice^0 i^0 n^0 pos^0 seq^0 walker^0 z^0 0: l0 -> l1 : choice^0'=choice^post1, i^0'=i^post1, n^0'=n^post1, pos^0'=pos^post1, seq^0'=seq^post1, walker^0'=walker^post1, z^0'=z^post1, (-i^post1+i^0 == 0 /\ -pos^post1+pos^0 == 0 /\ -n^post1+n^0 == 0 /\ walker^0-walker^post1 == 0 /\ choice^0-choice^post1 == 0 /\ seq^0-seq^post1 == 0 /\ -z^post1+z^0 == 0), cost: 1 1: l2 -> l3 : choice^0'=choice^post2, i^0'=i^post2, n^0'=n^post2, pos^0'=pos^post2, seq^0'=seq^post2, walker^0'=walker^post2, z^0'=z^post2, (-pos^post2+pos^0 == 0 /\ z^0-z^post2 == 0 /\ seq^0-seq^post2 == 0 /\ choice^0-choice^post2 == 0 /\ -i^post2+i^0 == 0 /\ 1-choice^0 <= 0 /\ -1+walker^post2-walker^0 == 0 /\ -n^post2+n^0 == 0), cost: 1 2: l2 -> l3 : choice^0'=choice^post3, i^0'=i^post3, n^0'=n^post3, pos^0'=pos^post3, seq^0'=seq^post3, walker^0'=walker^post3, z^0'=z^post3, (choice^0-choice^post3 == 0 /\ z^0-z^post3 == 0 /\ i^0-i^post3 == 0 /\ 1+walker^post3-walker^0 == 0 /\ seq^0-seq^post3 == 0 /\ choice^0 <= 0 /\ pos^0-pos^post3 == 0 /\ -n^post3+n^0 == 0), cost: 1 12: l3 -> l8 : choice^0'=choice^post13, i^0'=i^post13, n^0'=n^post13, pos^0'=pos^post13, seq^0'=seq^post13, walker^0'=walker^post13, z^0'=z^post13, (seq^0-seq^post13 == 0 /\ choice^0-choice^post13 == 0 /\ pos^0-pos^post13 == 0 /\ -n^post13+n^0 == 0 /\ -walker^post13+walker^0 == 0 /\ z^0-z^post13 == 0 /\ -i^post13+i^0 == 0), cost: 1 3: l4 -> l3 : choice^0'=choice^post4, i^0'=i^post4, n^0'=n^post4, pos^0'=pos^post4, seq^0'=seq^post4, walker^0'=walker^post4, z^0'=z^post4, (0 == 0 /\ -1+seq^post4 == 0 /\ -2+n^post4 <= 0 /\ -seq^post4+i^post4 == 0 /\ -z^post4 <= 0 /\ -1+walker^post4 == 0 /\ 2-n^post4 <= 0 /\ pos^post4 == 0 /\ choice^0-choice^post4 == 0), cost: 1 4: l5 -> l2 : choice^0'=choice^post5, i^0'=i^post5, n^0'=n^post5, pos^0'=pos^post5, seq^0'=seq^post5, walker^0'=walker^post5, z^0'=z^post5, (0 == 0 /\ pos^0-pos^post5 == 0 /\ choice^0-choice^post5 == 0 /\ n^0-n^post5 == 0 /\ -z^post5 <= 0 /\ -walker^post5+walker^0 == 0 /\ i^0 <= 0 /\ i^post5-seq^post5 == 0 /\ -1-seq^0+seq^post5 == 0), cost: 1 5: l5 -> l2 : choice^0'=choice^post6, i^0'=i^post6, n^0'=n^post6, pos^0'=pos^post6, seq^0'=seq^post6, walker^0'=walker^post6, z^0'=z^post6, (seq^0-seq^post6 == 0 /\ choice^0 <= 0 /\ -choice^post6+choice^0 == 0 /\ n^0-n^post6 == 0 /\ 1+i^post6-i^0 == 0 /\ -pos^post6+pos^0 == 0 /\ -z^post6+z^0 == 0 /\ 1-i^0 <= 0 /\ walker^0-walker^post6 == 0), cost: 1 6: l6 -> l2 : choice^0'=choice^post7, i^0'=i^post7, n^0'=n^post7, pos^0'=pos^post7, seq^0'=seq^post7, walker^0'=walker^post7, z^0'=z^post7, (seq^0-seq^post7 == 0 /\ -i^post7+i^0 == 0 /\ -pos^post7+pos^0 == 0 /\ -n^post7+n^0 == 0 /\ choice^0-choice^post7 == 0 /\ 1-z^0+z^post7 == 0 /\ -walker^post7+walker^0 == 0 /\ 1-z^0 <= 0), cost: 1 7: l6 -> l5 : choice^0'=choice^post8, i^0'=i^post8, n^0'=n^post8, pos^0'=pos^post8, seq^0'=seq^post8, walker^0'=walker^post8, z^0'=z^post8, (-i^post8+i^0 == 0 /\ z^0 <= 0 /\ -walker^post8+walker^0 == 0 /\ -n^post8+n^0 == 0 /\ choice^0-choice^post8 == 0 /\ z^0-z^post8 == 0 /\ pos^0-pos^post8 == 0 /\ -seq^post8+seq^0 == 0), cost: 1 8: l7 -> l0 : choice^0'=choice^post9, i^0'=i^post9, n^0'=n^post9, pos^0'=pos^post9, seq^0'=seq^post9, walker^0'=walker^post9, z^0'=z^post9, (seq^0-seq^post9 == 0 /\ -i^post9+i^0 == 0 /\ pos^0-pos^post9 == 0 /\ -choice^post9+choice^0 == 0 /\ n^0-n^post9 == 0 /\ walker^0 <= 0 /\ -walker^post9+walker^0 == 0 /\ -z^post9+z^0 == 0), cost: 1 9: l7 -> l6 : choice^0'=choice^post10, i^0'=i^post10, n^0'=n^post10, pos^0'=pos^post10, seq^0'=seq^post10, walker^0'=walker^post10, z^0'=z^post10, (0 == 0 /\ -pos^post10+pos^0 == 0 /\ n^0-n^post10 == 0 /\ -z^post10+z^0 == 0 /\ -i^post10+i^0 == 0 /\ 1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0 /\ walker^0-walker^post10 == 0 /\ seq^0-seq^post10 == 0), cost: 1 10: l8 -> l0 : choice^0'=choice^post11, i^0'=i^post11, n^0'=n^post11, pos^0'=pos^post11, seq^0'=seq^post11, walker^0'=walker^post11, z^0'=z^post11, (-n^post11+n^0 == 0 /\ 1+n^0-walker^0 <= 0 /\ -z^post11+z^0 == 0 /\ seq^0-seq^post11 == 0 /\ -walker^post11+walker^0 == 0 /\ -pos^post11+pos^0 == 0 /\ choice^0-choice^post11 == 0 /\ -i^post11+i^0 == 0), cost: 1 11: l8 -> l7 : choice^0'=choice^post12, i^0'=i^post12, n^0'=n^post12, pos^0'=pos^post12, seq^0'=seq^post12, walker^0'=walker^post12, z^0'=z^post12, (-n^0+walker^0 <= 0 /\ choice^0-choice^post12 == 0 /\ z^0-z^post12 == 0 /\ seq^0-seq^post12 == 0 /\ -i^post12+i^0 == 0 /\ -pos^post12+pos^0 == 0 /\ -n^post12+n^0 == 0 /\ -walker^post12+walker^0 == 0), cost: 1 13: l9 -> l4 : choice^0'=choice^post14, i^0'=i^post14, n^0'=n^post14, pos^0'=pos^post14, seq^0'=seq^post14, walker^0'=walker^post14, z^0'=z^post14, (-i^post14+i^0 == 0 /\ z^0-z^post14 == 0 /\ seq^0-seq^post14 == 0 /\ -n^post14+n^0 == 0 /\ pos^0-pos^post14 == 0 /\ -walker^post14+walker^0 == 0 /\ choice^0-choice^post14 == 0), cost: 1 Chained Linear Paths Start location: l9 Program variables: choice^0 i^0 n^0 pos^0 seq^0 walker^0 z^0 0: l0 -> l1 : choice^0'=choice^post1, i^0'=i^post1, n^0'=n^post1, pos^0'=pos^post1, seq^0'=seq^post1, walker^0'=walker^post1, z^0'=z^post1, (-i^post1+i^0 == 0 /\ -pos^post1+pos^0 == 0 /\ -n^post1+n^0 == 0 /\ walker^0-walker^post1 == 0 /\ choice^0-choice^post1 == 0 /\ seq^0-seq^post1 == 0 /\ -z^post1+z^0 == 0), cost: 1 1: l2 -> l3 : choice^0'=choice^post2, i^0'=i^post2, n^0'=n^post2, pos^0'=pos^post2, seq^0'=seq^post2, walker^0'=walker^post2, z^0'=z^post2, (-pos^post2+pos^0 == 0 /\ z^0-z^post2 == 0 /\ seq^0-seq^post2 == 0 /\ choice^0-choice^post2 == 0 /\ -i^post2+i^0 == 0 /\ 1-choice^0 <= 0 /\ -1+walker^post2-walker^0 == 0 /\ -n^post2+n^0 == 0), cost: 1 2: l2 -> l3 : choice^0'=choice^post3, i^0'=i^post3, n^0'=n^post3, pos^0'=pos^post3, seq^0'=seq^post3, walker^0'=walker^post3, z^0'=z^post3, (choice^0-choice^post3 == 0 /\ z^0-z^post3 == 0 /\ i^0-i^post3 == 0 /\ 1+walker^post3-walker^0 == 0 /\ seq^0-seq^post3 == 0 /\ choice^0 <= 0 /\ pos^0-pos^post3 == 0 /\ -n^post3+n^0 == 0), cost: 1 12: l3 -> l8 : choice^0'=choice^post13, i^0'=i^post13, n^0'=n^post13, pos^0'=pos^post13, seq^0'=seq^post13, walker^0'=walker^post13, z^0'=z^post13, (seq^0-seq^post13 == 0 /\ choice^0-choice^post13 == 0 /\ pos^0-pos^post13 == 0 /\ -n^post13+n^0 == 0 /\ -walker^post13+walker^0 == 0 /\ z^0-z^post13 == 0 /\ -i^post13+i^0 == 0), cost: 1 4: l5 -> l2 : choice^0'=choice^post5, i^0'=i^post5, n^0'=n^post5, pos^0'=pos^post5, seq^0'=seq^post5, walker^0'=walker^post5, z^0'=z^post5, (0 == 0 /\ pos^0-pos^post5 == 0 /\ choice^0-choice^post5 == 0 /\ n^0-n^post5 == 0 /\ -z^post5 <= 0 /\ -walker^post5+walker^0 == 0 /\ i^0 <= 0 /\ i^post5-seq^post5 == 0 /\ -1-seq^0+seq^post5 == 0), cost: 1 5: l5 -> l2 : choice^0'=choice^post6, i^0'=i^post6, n^0'=n^post6, pos^0'=pos^post6, seq^0'=seq^post6, walker^0'=walker^post6, z^0'=z^post6, (seq^0-seq^post6 == 0 /\ choice^0 <= 0 /\ -choice^post6+choice^0 == 0 /\ n^0-n^post6 == 0 /\ 1+i^post6-i^0 == 0 /\ -pos^post6+pos^0 == 0 /\ -z^post6+z^0 == 0 /\ 1-i^0 <= 0 /\ walker^0-walker^post6 == 0), cost: 1 6: l6 -> l2 : choice^0'=choice^post7, i^0'=i^post7, n^0'=n^post7, pos^0'=pos^post7, seq^0'=seq^post7, walker^0'=walker^post7, z^0'=z^post7, (seq^0-seq^post7 == 0 /\ -i^post7+i^0 == 0 /\ -pos^post7+pos^0 == 0 /\ -n^post7+n^0 == 0 /\ choice^0-choice^post7 == 0 /\ 1-z^0+z^post7 == 0 /\ -walker^post7+walker^0 == 0 /\ 1-z^0 <= 0), cost: 1 7: l6 -> l5 : choice^0'=choice^post8, i^0'=i^post8, n^0'=n^post8, pos^0'=pos^post8, seq^0'=seq^post8, walker^0'=walker^post8, z^0'=z^post8, (-i^post8+i^0 == 0 /\ z^0 <= 0 /\ -walker^post8+walker^0 == 0 /\ -n^post8+n^0 == 0 /\ choice^0-choice^post8 == 0 /\ z^0-z^post8 == 0 /\ pos^0-pos^post8 == 0 /\ -seq^post8+seq^0 == 0), cost: 1 8: l7 -> l0 : choice^0'=choice^post9, i^0'=i^post9, n^0'=n^post9, pos^0'=pos^post9, seq^0'=seq^post9, walker^0'=walker^post9, z^0'=z^post9, (seq^0-seq^post9 == 0 /\ -i^post9+i^0 == 0 /\ pos^0-pos^post9 == 0 /\ -choice^post9+choice^0 == 0 /\ n^0-n^post9 == 0 /\ walker^0 <= 0 /\ -walker^post9+walker^0 == 0 /\ -z^post9+z^0 == 0), cost: 1 9: l7 -> l6 : choice^0'=choice^post10, i^0'=i^post10, n^0'=n^post10, pos^0'=pos^post10, seq^0'=seq^post10, walker^0'=walker^post10, z^0'=z^post10, (0 == 0 /\ -pos^post10+pos^0 == 0 /\ n^0-n^post10 == 0 /\ -z^post10+z^0 == 0 /\ -i^post10+i^0 == 0 /\ 1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0 /\ walker^0-walker^post10 == 0 /\ seq^0-seq^post10 == 0), cost: 1 10: l8 -> l0 : choice^0'=choice^post11, i^0'=i^post11, n^0'=n^post11, pos^0'=pos^post11, seq^0'=seq^post11, walker^0'=walker^post11, z^0'=z^post11, (-n^post11+n^0 == 0 /\ 1+n^0-walker^0 <= 0 /\ -z^post11+z^0 == 0 /\ seq^0-seq^post11 == 0 /\ -walker^post11+walker^0 == 0 /\ -pos^post11+pos^0 == 0 /\ choice^0-choice^post11 == 0 /\ -i^post11+i^0 == 0), cost: 1 11: l8 -> l7 : choice^0'=choice^post12, i^0'=i^post12, n^0'=n^post12, pos^0'=pos^post12, seq^0'=seq^post12, walker^0'=walker^post12, z^0'=z^post12, (-n^0+walker^0 <= 0 /\ choice^0-choice^post12 == 0 /\ z^0-z^post12 == 0 /\ seq^0-seq^post12 == 0 /\ -i^post12+i^0 == 0 /\ -pos^post12+pos^0 == 0 /\ -n^post12+n^0 == 0 /\ -walker^post12+walker^0 == 0), cost: 1 14: l9 -> l3 : choice^0'=choice^post4, i^0'=i^post4, n^0'=n^post4, pos^0'=pos^post4, seq^0'=seq^post4, walker^0'=walker^post4, z^0'=z^post4, (0 == 0 /\ -1+seq^post4 == 0 /\ -2+n^post4 <= 0 /\ -seq^post4+i^post4 == 0 /\ -z^post4 <= 0 /\ -i^post14+i^0 == 0 /\ z^0-z^post14 == 0 /\ seq^0-seq^post14 == 0 /\ -n^post14+n^0 == 0 /\ -1+walker^post4 == 0 /\ 2-n^post4 <= 0 /\ pos^0-pos^post14 == 0 /\ -choice^post4+choice^post14 == 0 /\ pos^post4 == 0 /\ -walker^post14+walker^0 == 0 /\ choice^0-choice^post14 == 0), cost: 1 Eliminating location l4 by chaining: Applied chaining First rule: l9 -> l4 : choice^0'=choice^post14, i^0'=i^post14, n^0'=n^post14, pos^0'=pos^post14, seq^0'=seq^post14, walker^0'=walker^post14, z^0'=z^post14, (-i^post14+i^0 == 0 /\ z^0-z^post14 == 0 /\ seq^0-seq^post14 == 0 /\ -n^post14+n^0 == 0 /\ pos^0-pos^post14 == 0 /\ -walker^post14+walker^0 == 0 /\ choice^0-choice^post14 == 0), cost: 1 Second rule: l4 -> l3 : choice^0'=choice^post4, i^0'=i^post4, n^0'=n^post4, pos^0'=pos^post4, seq^0'=seq^post4, walker^0'=walker^post4, z^0'=z^post4, (0 == 0 /\ -1+seq^post4 == 0 /\ -2+n^post4 <= 0 /\ -seq^post4+i^post4 == 0 /\ -z^post4 <= 0 /\ -1+walker^post4 == 0 /\ 2-n^post4 <= 0 /\ pos^post4 == 0 /\ choice^0-choice^post4 == 0), cost: 1 New rule: l9 -> l3 : choice^0'=choice^post4, i^0'=i^post4, n^0'=n^post4, pos^0'=pos^post4, seq^0'=seq^post4, walker^0'=walker^post4, z^0'=z^post4, (0 == 0 /\ -1+seq^post4 == 0 /\ -2+n^post4 <= 0 /\ -seq^post4+i^post4 == 0 /\ -z^post4 <= 0 /\ -i^post14+i^0 == 0 /\ z^0-z^post14 == 0 /\ seq^0-seq^post14 == 0 /\ -n^post14+n^0 == 0 /\ -1+walker^post4 == 0 /\ 2-n^post4 <= 0 /\ pos^0-pos^post14 == 0 /\ -choice^post4+choice^post14 == 0 /\ pos^post4 == 0 /\ -walker^post14+walker^0 == 0 /\ choice^0-choice^post14 == 0), cost: 1 Applied deletion Removed the following rules: 3 13 Simplified Transitions Start location: l9 Program variables: choice^0 i^0 n^0 pos^0 seq^0 walker^0 z^0 15: l0 -> l1 : T, cost: 1 16: l2 -> l3 : walker^0'=1+walker^0, 1-choice^0 <= 0, cost: 1 17: l2 -> l3 : walker^0'=-1+walker^0, choice^0 <= 0, cost: 1 26: l3 -> l8 : T, cost: 1 18: l5 -> l2 : i^0'=1+seq^0, seq^0'=1+seq^0, z^0'=z^post5, (-z^post5 <= 0 /\ i^0 <= 0), cost: 1 19: l5 -> l2 : i^0'=-1+i^0, (choice^0 <= 0 /\ 1-i^0 <= 0), cost: 1 20: l6 -> l2 : z^0'=-1+z^0, 1-z^0 <= 0, cost: 1 21: l6 -> l5 : z^0 <= 0, cost: 1 22: l7 -> l0 : walker^0 <= 0, cost: 1 23: l7 -> l6 : choice^0'=choice^post10, (1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0), cost: 1 24: l8 -> l0 : 1+n^0-walker^0 <= 0, cost: 1 25: l8 -> l7 : -n^0+walker^0 <= 0, cost: 1 27: l9 -> l3 : i^0'=1, n^0'=2, pos^0'=0, seq^0'=1, walker^0'=1, z^0'=z^post4, -z^post4 <= 0, cost: 1 Propagated Equalities Original rule: l0 -> l1 : choice^0'=choice^post1, i^0'=i^post1, n^0'=n^post1, pos^0'=pos^post1, seq^0'=seq^post1, walker^0'=walker^post1, z^0'=z^post1, (-i^post1+i^0 == 0 /\ -pos^post1+pos^0 == 0 /\ -n^post1+n^0 == 0 /\ walker^0-walker^post1 == 0 /\ choice^0-choice^post1 == 0 /\ seq^0-seq^post1 == 0 /\ -z^post1+z^0 == 0), cost: 1 New rule: l0 -> l1 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, 0 == 0, cost: 1 propagated equality i^post1 = i^0 propagated equality pos^post1 = pos^0 propagated equality n^post1 = n^0 propagated equality walker^post1 = walker^0 propagated equality choice^post1 = choice^0 propagated equality seq^post1 = seq^0 propagated equality z^post1 = z^0 Simplified Guard Original rule: l0 -> l1 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, 0 == 0, cost: 1 New rule: l0 -> l1 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, T, cost: 1 Removed Trivial Updates Original rule: l0 -> l1 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, T, cost: 1 New rule: l0 -> l1 : T, cost: 1 Propagated Equalities Original rule: l2 -> l3 : choice^0'=choice^post2, i^0'=i^post2, n^0'=n^post2, pos^0'=pos^post2, seq^0'=seq^post2, walker^0'=walker^post2, z^0'=z^post2, (-pos^post2+pos^0 == 0 /\ z^0-z^post2 == 0 /\ seq^0-seq^post2 == 0 /\ choice^0-choice^post2 == 0 /\ -i^post2+i^0 == 0 /\ 1-choice^0 <= 0 /\ -1+walker^post2-walker^0 == 0 /\ -n^post2+n^0 == 0), cost: 1 New rule: l2 -> l3 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=1+walker^0, z^0'=z^0, (0 == 0 /\ 1-choice^0 <= 0), cost: 1 propagated equality pos^post2 = pos^0 propagated equality z^post2 = z^0 propagated equality seq^post2 = seq^0 propagated equality choice^post2 = choice^0 propagated equality i^post2 = i^0 propagated equality walker^post2 = 1+walker^0 propagated equality n^post2 = n^0 Simplified Guard Original rule: l2 -> l3 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=1+walker^0, z^0'=z^0, (0 == 0 /\ 1-choice^0 <= 0), cost: 1 New rule: l2 -> l3 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=1+walker^0, z^0'=z^0, 1-choice^0 <= 0, cost: 1 Removed Trivial Updates Original rule: l2 -> l3 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=1+walker^0, z^0'=z^0, 1-choice^0 <= 0, cost: 1 New rule: l2 -> l3 : walker^0'=1+walker^0, 1-choice^0 <= 0, cost: 1 Propagated Equalities Original rule: l2 -> l3 : choice^0'=choice^post3, i^0'=i^post3, n^0'=n^post3, pos^0'=pos^post3, seq^0'=seq^post3, walker^0'=walker^post3, z^0'=z^post3, (choice^0-choice^post3 == 0 /\ z^0-z^post3 == 0 /\ i^0-i^post3 == 0 /\ 1+walker^post3-walker^0 == 0 /\ seq^0-seq^post3 == 0 /\ choice^0 <= 0 /\ pos^0-pos^post3 == 0 /\ -n^post3+n^0 == 0), cost: 1 New rule: l2 -> l3 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=-1+walker^0, z^0'=z^0, (0 == 0 /\ choice^0 <= 0), cost: 1 propagated equality choice^post3 = choice^0 propagated equality z^post3 = z^0 propagated equality i^post3 = i^0 propagated equality walker^post3 = -1+walker^0 propagated equality seq^post3 = seq^0 propagated equality pos^post3 = pos^0 propagated equality n^post3 = n^0 Simplified Guard Original rule: l2 -> l3 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=-1+walker^0, z^0'=z^0, (0 == 0 /\ choice^0 <= 0), cost: 1 New rule: l2 -> l3 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=-1+walker^0, z^0'=z^0, choice^0 <= 0, cost: 1 Removed Trivial Updates Original rule: l2 -> l3 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=-1+walker^0, z^0'=z^0, choice^0 <= 0, cost: 1 New rule: l2 -> l3 : walker^0'=-1+walker^0, choice^0 <= 0, cost: 1 Propagated Equalities Original rule: l5 -> l2 : choice^0'=choice^post5, i^0'=i^post5, n^0'=n^post5, pos^0'=pos^post5, seq^0'=seq^post5, walker^0'=walker^post5, z^0'=z^post5, (0 == 0 /\ pos^0-pos^post5 == 0 /\ choice^0-choice^post5 == 0 /\ n^0-n^post5 == 0 /\ -z^post5 <= 0 /\ -walker^post5+walker^0 == 0 /\ i^0 <= 0 /\ i^post5-seq^post5 == 0 /\ -1-seq^0+seq^post5 == 0), cost: 1 New rule: l5 -> l2 : choice^0'=choice^0, i^0'=1+seq^0, n^0'=n^0, pos^0'=pos^0, seq^0'=1+seq^0, walker^0'=walker^0, z^0'=z^post5, (0 == 0 /\ -z^post5 <= 0 /\ i^0 <= 0), cost: 1 propagated equality pos^post5 = pos^0 propagated equality choice^post5 = choice^0 propagated equality n^post5 = n^0 propagated equality walker^post5 = walker^0 propagated equality i^post5 = seq^post5 propagated equality seq^post5 = 1+seq^0 Simplified Guard Original rule: l5 -> l2 : choice^0'=choice^0, i^0'=1+seq^0, n^0'=n^0, pos^0'=pos^0, seq^0'=1+seq^0, walker^0'=walker^0, z^0'=z^post5, (0 == 0 /\ -z^post5 <= 0 /\ i^0 <= 0), cost: 1 New rule: l5 -> l2 : choice^0'=choice^0, i^0'=1+seq^0, n^0'=n^0, pos^0'=pos^0, seq^0'=1+seq^0, walker^0'=walker^0, z^0'=z^post5, (-z^post5 <= 0 /\ i^0 <= 0), cost: 1 Removed Trivial Updates Original rule: l5 -> l2 : choice^0'=choice^0, i^0'=1+seq^0, n^0'=n^0, pos^0'=pos^0, seq^0'=1+seq^0, walker^0'=walker^0, z^0'=z^post5, (-z^post5 <= 0 /\ i^0 <= 0), cost: 1 New rule: l5 -> l2 : i^0'=1+seq^0, seq^0'=1+seq^0, z^0'=z^post5, (-z^post5 <= 0 /\ i^0 <= 0), cost: 1 Propagated Equalities Original rule: l5 -> l2 : choice^0'=choice^post6, i^0'=i^post6, n^0'=n^post6, pos^0'=pos^post6, seq^0'=seq^post6, walker^0'=walker^post6, z^0'=z^post6, (seq^0-seq^post6 == 0 /\ choice^0 <= 0 /\ -choice^post6+choice^0 == 0 /\ n^0-n^post6 == 0 /\ 1+i^post6-i^0 == 0 /\ -pos^post6+pos^0 == 0 /\ -z^post6+z^0 == 0 /\ 1-i^0 <= 0 /\ walker^0-walker^post6 == 0), cost: 1 New rule: l5 -> l2 : choice^0'=choice^0, i^0'=-1+i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, (0 == 0 /\ choice^0 <= 0 /\ 1-i^0 <= 0), cost: 1 propagated equality seq^post6 = seq^0 propagated equality choice^post6 = choice^0 propagated equality n^post6 = n^0 propagated equality i^post6 = -1+i^0 propagated equality pos^post6 = pos^0 propagated equality z^post6 = z^0 propagated equality walker^post6 = walker^0 Simplified Guard Original rule: l5 -> l2 : choice^0'=choice^0, i^0'=-1+i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, (0 == 0 /\ choice^0 <= 0 /\ 1-i^0 <= 0), cost: 1 New rule: l5 -> l2 : choice^0'=choice^0, i^0'=-1+i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, (choice^0 <= 0 /\ 1-i^0 <= 0), cost: 1 Removed Trivial Updates Original rule: l5 -> l2 : choice^0'=choice^0, i^0'=-1+i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, (choice^0 <= 0 /\ 1-i^0 <= 0), cost: 1 New rule: l5 -> l2 : i^0'=-1+i^0, (choice^0 <= 0 /\ 1-i^0 <= 0), cost: 1 Propagated Equalities Original rule: l6 -> l2 : choice^0'=choice^post7, i^0'=i^post7, n^0'=n^post7, pos^0'=pos^post7, seq^0'=seq^post7, walker^0'=walker^post7, z^0'=z^post7, (seq^0-seq^post7 == 0 /\ -i^post7+i^0 == 0 /\ -pos^post7+pos^0 == 0 /\ -n^post7+n^0 == 0 /\ choice^0-choice^post7 == 0 /\ 1-z^0+z^post7 == 0 /\ -walker^post7+walker^0 == 0 /\ 1-z^0 <= 0), cost: 1 New rule: l6 -> l2 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=-1+z^0, (0 == 0 /\ 1-z^0 <= 0), cost: 1 propagated equality seq^post7 = seq^0 propagated equality i^post7 = i^0 propagated equality pos^post7 = pos^0 propagated equality n^post7 = n^0 propagated equality choice^post7 = choice^0 propagated equality z^post7 = -1+z^0 propagated equality walker^post7 = walker^0 Simplified Guard Original rule: l6 -> l2 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=-1+z^0, (0 == 0 /\ 1-z^0 <= 0), cost: 1 New rule: l6 -> l2 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=-1+z^0, 1-z^0 <= 0, cost: 1 Removed Trivial Updates Original rule: l6 -> l2 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=-1+z^0, 1-z^0 <= 0, cost: 1 New rule: l6 -> l2 : z^0'=-1+z^0, 1-z^0 <= 0, cost: 1 Propagated Equalities Original rule: l6 -> l5 : choice^0'=choice^post8, i^0'=i^post8, n^0'=n^post8, pos^0'=pos^post8, seq^0'=seq^post8, walker^0'=walker^post8, z^0'=z^post8, (-i^post8+i^0 == 0 /\ z^0 <= 0 /\ -walker^post8+walker^0 == 0 /\ -n^post8+n^0 == 0 /\ choice^0-choice^post8 == 0 /\ z^0-z^post8 == 0 /\ pos^0-pos^post8 == 0 /\ -seq^post8+seq^0 == 0), cost: 1 New rule: l6 -> l5 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, (0 == 0 /\ z^0 <= 0), cost: 1 propagated equality i^post8 = i^0 propagated equality walker^post8 = walker^0 propagated equality n^post8 = n^0 propagated equality choice^post8 = choice^0 propagated equality z^post8 = z^0 propagated equality pos^post8 = pos^0 propagated equality seq^post8 = seq^0 Simplified Guard Original rule: l6 -> l5 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, (0 == 0 /\ z^0 <= 0), cost: 1 New rule: l6 -> l5 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, z^0 <= 0, cost: 1 Removed Trivial Updates Original rule: l6 -> l5 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, z^0 <= 0, cost: 1 New rule: l6 -> l5 : z^0 <= 0, cost: 1 Propagated Equalities Original rule: l7 -> l0 : choice^0'=choice^post9, i^0'=i^post9, n^0'=n^post9, pos^0'=pos^post9, seq^0'=seq^post9, walker^0'=walker^post9, z^0'=z^post9, (seq^0-seq^post9 == 0 /\ -i^post9+i^0 == 0 /\ pos^0-pos^post9 == 0 /\ -choice^post9+choice^0 == 0 /\ n^0-n^post9 == 0 /\ walker^0 <= 0 /\ -walker^post9+walker^0 == 0 /\ -z^post9+z^0 == 0), cost: 1 New rule: l7 -> l0 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, (0 == 0 /\ walker^0 <= 0), cost: 1 propagated equality seq^post9 = seq^0 propagated equality i^post9 = i^0 propagated equality pos^post9 = pos^0 propagated equality choice^post9 = choice^0 propagated equality n^post9 = n^0 propagated equality walker^post9 = walker^0 propagated equality z^post9 = z^0 Simplified Guard Original rule: l7 -> l0 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, (0 == 0 /\ walker^0 <= 0), cost: 1 New rule: l7 -> l0 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, walker^0 <= 0, cost: 1 Removed Trivial Updates Original rule: l7 -> l0 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, walker^0 <= 0, cost: 1 New rule: l7 -> l0 : walker^0 <= 0, cost: 1 Propagated Equalities Original rule: l7 -> l6 : choice^0'=choice^post10, i^0'=i^post10, n^0'=n^post10, pos^0'=pos^post10, seq^0'=seq^post10, walker^0'=walker^post10, z^0'=z^post10, (0 == 0 /\ -pos^post10+pos^0 == 0 /\ n^0-n^post10 == 0 /\ -z^post10+z^0 == 0 /\ -i^post10+i^0 == 0 /\ 1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0 /\ walker^0-walker^post10 == 0 /\ seq^0-seq^post10 == 0), cost: 1 New rule: l7 -> l6 : choice^0'=choice^post10, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, (0 == 0 /\ 1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0), cost: 1 propagated equality pos^post10 = pos^0 propagated equality n^post10 = n^0 propagated equality z^post10 = z^0 propagated equality i^post10 = i^0 propagated equality walker^post10 = walker^0 propagated equality seq^post10 = seq^0 Simplified Guard Original rule: l7 -> l6 : choice^0'=choice^post10, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, (0 == 0 /\ 1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0), cost: 1 New rule: l7 -> l6 : choice^0'=choice^post10, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, (1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0), cost: 1 Removed Trivial Updates Original rule: l7 -> l6 : choice^0'=choice^post10, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, (1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0), cost: 1 New rule: l7 -> l6 : choice^0'=choice^post10, (1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0), cost: 1 Propagated Equalities Original rule: l8 -> l0 : choice^0'=choice^post11, i^0'=i^post11, n^0'=n^post11, pos^0'=pos^post11, seq^0'=seq^post11, walker^0'=walker^post11, z^0'=z^post11, (-n^post11+n^0 == 0 /\ 1+n^0-walker^0 <= 0 /\ -z^post11+z^0 == 0 /\ seq^0-seq^post11 == 0 /\ -walker^post11+walker^0 == 0 /\ -pos^post11+pos^0 == 0 /\ choice^0-choice^post11 == 0 /\ -i^post11+i^0 == 0), cost: 1 New rule: l8 -> l0 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, (0 == 0 /\ 1+n^0-walker^0 <= 0), cost: 1 propagated equality n^post11 = n^0 propagated equality z^post11 = z^0 propagated equality seq^post11 = seq^0 propagated equality walker^post11 = walker^0 propagated equality pos^post11 = pos^0 propagated equality choice^post11 = choice^0 propagated equality i^post11 = i^0 Simplified Guard Original rule: l8 -> l0 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, (0 == 0 /\ 1+n^0-walker^0 <= 0), cost: 1 New rule: l8 -> l0 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, 1+n^0-walker^0 <= 0, cost: 1 Removed Trivial Updates Original rule: l8 -> l0 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, 1+n^0-walker^0 <= 0, cost: 1 New rule: l8 -> l0 : 1+n^0-walker^0 <= 0, cost: 1 Propagated Equalities Original rule: l8 -> l7 : choice^0'=choice^post12, i^0'=i^post12, n^0'=n^post12, pos^0'=pos^post12, seq^0'=seq^post12, walker^0'=walker^post12, z^0'=z^post12, (-n^0+walker^0 <= 0 /\ choice^0-choice^post12 == 0 /\ z^0-z^post12 == 0 /\ seq^0-seq^post12 == 0 /\ -i^post12+i^0 == 0 /\ -pos^post12+pos^0 == 0 /\ -n^post12+n^0 == 0 /\ -walker^post12+walker^0 == 0), cost: 1 New rule: l8 -> l7 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, (0 == 0 /\ -n^0+walker^0 <= 0), cost: 1 propagated equality choice^post12 = choice^0 propagated equality z^post12 = z^0 propagated equality seq^post12 = seq^0 propagated equality i^post12 = i^0 propagated equality pos^post12 = pos^0 propagated equality n^post12 = n^0 propagated equality walker^post12 = walker^0 Simplified Guard Original rule: l8 -> l7 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, (0 == 0 /\ -n^0+walker^0 <= 0), cost: 1 New rule: l8 -> l7 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, -n^0+walker^0 <= 0, cost: 1 Removed Trivial Updates Original rule: l8 -> l7 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, -n^0+walker^0 <= 0, cost: 1 New rule: l8 -> l7 : -n^0+walker^0 <= 0, cost: 1 Propagated Equalities Original rule: l3 -> l8 : choice^0'=choice^post13, i^0'=i^post13, n^0'=n^post13, pos^0'=pos^post13, seq^0'=seq^post13, walker^0'=walker^post13, z^0'=z^post13, (seq^0-seq^post13 == 0 /\ choice^0-choice^post13 == 0 /\ pos^0-pos^post13 == 0 /\ -n^post13+n^0 == 0 /\ -walker^post13+walker^0 == 0 /\ z^0-z^post13 == 0 /\ -i^post13+i^0 == 0), cost: 1 New rule: l3 -> l8 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, 0 == 0, cost: 1 propagated equality seq^post13 = seq^0 propagated equality choice^post13 = choice^0 propagated equality pos^post13 = pos^0 propagated equality n^post13 = n^0 propagated equality walker^post13 = walker^0 propagated equality z^post13 = z^0 propagated equality i^post13 = i^0 Simplified Guard Original rule: l3 -> l8 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, 0 == 0, cost: 1 New rule: l3 -> l8 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, T, cost: 1 Removed Trivial Updates Original rule: l3 -> l8 : choice^0'=choice^0, i^0'=i^0, n^0'=n^0, pos^0'=pos^0, seq^0'=seq^0, walker^0'=walker^0, z^0'=z^0, T, cost: 1 New rule: l3 -> l8 : T, cost: 1 made implied equalities explicit Original rule: l9 -> l3 : choice^0'=choice^post4, i^0'=i^post4, n^0'=n^post4, pos^0'=pos^post4, seq^0'=seq^post4, walker^0'=walker^post4, z^0'=z^post4, (0 == 0 /\ -1+seq^post4 == 0 /\ -2+n^post4 <= 0 /\ -seq^post4+i^post4 == 0 /\ -z^post4 <= 0 /\ -i^post14+i^0 == 0 /\ z^0-z^post14 == 0 /\ seq^0-seq^post14 == 0 /\ -n^post14+n^0 == 0 /\ -1+walker^post4 == 0 /\ 2-n^post4 <= 0 /\ pos^0-pos^post14 == 0 /\ -choice^post4+choice^post14 == 0 /\ pos^post4 == 0 /\ -walker^post14+walker^0 == 0 /\ choice^0-choice^post14 == 0), cost: 1 New rule: l9 -> l3 : choice^0'=choice^post4, i^0'=i^post4, n^0'=n^post4, pos^0'=pos^post4, seq^0'=seq^post4, walker^0'=walker^post4, z^0'=z^post4, (0 == 0 /\ -1+seq^post4 == 0 /\ -2+n^post4 <= 0 /\ -2+n^post4 == 0 /\ -seq^post4+i^post4 == 0 /\ -z^post4 <= 0 /\ -i^post14+i^0 == 0 /\ z^0-z^post14 == 0 /\ seq^0-seq^post14 == 0 /\ -n^post14+n^0 == 0 /\ -1+walker^post4 == 0 /\ 2-n^post4 <= 0 /\ pos^0-pos^post14 == 0 /\ -choice^post4+choice^post14 == 0 /\ pos^post4 == 0 /\ -walker^post14+walker^0 == 0 /\ choice^0-choice^post14 == 0), cost: 1 Propagated Equalities Original rule: l9 -> l3 : choice^0'=choice^post4, i^0'=i^post4, n^0'=n^post4, pos^0'=pos^post4, seq^0'=seq^post4, walker^0'=walker^post4, z^0'=z^post4, (0 == 0 /\ -1+seq^post4 == 0 /\ -2+n^post4 <= 0 /\ -2+n^post4 == 0 /\ -seq^post4+i^post4 == 0 /\ -z^post4 <= 0 /\ -i^post14+i^0 == 0 /\ z^0-z^post14 == 0 /\ seq^0-seq^post14 == 0 /\ -n^post14+n^0 == 0 /\ -1+walker^post4 == 0 /\ 2-n^post4 <= 0 /\ pos^0-pos^post14 == 0 /\ -choice^post4+choice^post14 == 0 /\ pos^post4 == 0 /\ -walker^post14+walker^0 == 0 /\ choice^0-choice^post14 == 0), cost: 1 New rule: l9 -> l3 : choice^0'=choice^post14, i^0'=1, n^0'=2, pos^0'=0, seq^0'=1, walker^0'=1, z^0'=z^post4, (0 <= 0 /\ 0 == 0 /\ -z^post4 <= 0 /\ -i^post14+i^0 == 0 /\ z^0-z^post14 == 0 /\ seq^0-seq^post14 == 0 /\ -n^post14+n^0 == 0 /\ pos^0-pos^post14 == 0 /\ -walker^post14+walker^0 == 0 /\ choice^0-choice^post14 == 0), cost: 1 propagated equality seq^post4 = 1 propagated equality n^post4 = 2 propagated equality i^post4 = 1 propagated equality walker^post4 = 1 propagated equality choice^post4 = choice^post14 propagated equality pos^post4 = 0 Propagated Equalities Original rule: l9 -> l3 : choice^0'=choice^post14, i^0'=1, n^0'=2, pos^0'=0, seq^0'=1, walker^0'=1, z^0'=z^post4, (0 <= 0 /\ 0 == 0 /\ -z^post4 <= 0 /\ -i^post14+i^0 == 0 /\ z^0-z^post14 == 0 /\ seq^0-seq^post14 == 0 /\ -n^post14+n^0 == 0 /\ pos^0-pos^post14 == 0 /\ -walker^post14+walker^0 == 0 /\ choice^0-choice^post14 == 0), cost: 1 New rule: l9 -> l3 : choice^0'=choice^0, i^0'=1, n^0'=2, pos^0'=0, seq^0'=1, walker^0'=1, z^0'=z^post4, (0 <= 0 /\ 0 == 0 /\ -z^post4 <= 0), cost: 1 propagated equality i^post14 = i^0 propagated equality z^post14 = z^0 propagated equality seq^post14 = seq^0 propagated equality n^post14 = n^0 propagated equality pos^post14 = pos^0 propagated equality walker^post14 = walker^0 propagated equality choice^post14 = choice^0 Simplified Guard Original rule: l9 -> l3 : choice^0'=choice^0, i^0'=1, n^0'=2, pos^0'=0, seq^0'=1, walker^0'=1, z^0'=z^post4, (0 <= 0 /\ 0 == 0 /\ -z^post4 <= 0), cost: 1 New rule: l9 -> l3 : choice^0'=choice^0, i^0'=1, n^0'=2, pos^0'=0, seq^0'=1, walker^0'=1, z^0'=z^post4, -z^post4 <= 0, cost: 1 Removed Trivial Updates Original rule: l9 -> l3 : choice^0'=choice^0, i^0'=1, n^0'=2, pos^0'=0, seq^0'=1, walker^0'=1, z^0'=z^post4, -z^post4 <= 0, cost: 1 New rule: l9 -> l3 : i^0'=1, n^0'=2, pos^0'=0, seq^0'=1, walker^0'=1, z^0'=z^post4, -z^post4 <= 0, cost: 1 Step with 27 Trace 27[(-z^post4 <= 0)] Blocked [{}, {}] Step with 26 Trace 27[(-z^post4 <= 0)], 26[T] Blocked [{}, {}, {}] Step with 25 Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {}, {24[T]}, {}] Step with 23 Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {}, {24[T]}, {22[T]}, {}] Step with 20 Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {}, {24[T]}, {22[T]}, {}, {}] Step with 16 Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)], 16[(1-choice^0 <= 0)] Blocked [{}, {}, {24[T]}, {22[T]}, {}, {}, {}] Accelerate Start location: l9 Program variables: choice^0 i^0 n^0 pos^0 seq^0 walker^0 z^0 15: l0 -> l1 : T, cost: 1 16: l2 -> l3 : walker^0'=1+walker^0, 1-choice^0 <= 0, cost: 1 17: l2 -> l3 : walker^0'=-1+walker^0, choice^0 <= 0, cost: 1 26: l3 -> l8 : T, cost: 1 28: l3 -> l3 : choice^0'=1, walker^0'=n+walker^0, z^0'=z^0-n, (1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0), cost: 1 18: l5 -> l2 : i^0'=1+seq^0, seq^0'=1+seq^0, z^0'=z^post5, (-z^post5 <= 0 /\ i^0 <= 0), cost: 1 19: l5 -> l2 : i^0'=-1+i^0, (choice^0 <= 0 /\ 1-i^0 <= 0), cost: 1 20: l6 -> l2 : z^0'=-1+z^0, 1-z^0 <= 0, cost: 1 21: l6 -> l5 : z^0 <= 0, cost: 1 22: l7 -> l0 : walker^0 <= 0, cost: 1 23: l7 -> l6 : choice^0'=choice^post10, (1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0), cost: 1 24: l8 -> l0 : 1+n^0-walker^0 <= 0, cost: 1 25: l8 -> l7 : -n^0+walker^0 <= 0, cost: 1 27: l9 -> l3 : i^0'=1, n^0'=2, pos^0'=0, seq^0'=1, walker^0'=1, z^0'=z^post4, -z^post4 <= 0, cost: 1 Loop Acceleration Original rule: l3 -> l3 : choice^0'=1, walker^0'=1+walker^0, z^0'=-1+z^0, (-n^0+walker^0 <= 0 /\ 1-walker^0 <= 0 /\ 1-z^0 <= 0), cost: 1 New rule: l3 -> l3 : choice^0'=1, walker^0'=n+walker^0, z^0'=z^0-n, (1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0), cost: 1 n^0-walker^0 >= 0 [0]: montonic decrease yields 1+n^0-n-walker^0 >= 0 n^0-walker^0 >= 0 [1]: eventual increase yields (1 <= 0 /\ n^0-walker^0 >= 0) -1+walker^0 >= 0 [0]: monotonic increase yields -1+walker^0 >= 0 -1+z^0 >= 0 [0]: montonic decrease yields z^0-n >= 0 -1+z^0 >= 0 [1]: eventual increase yields (1 <= 0 /\ -1+z^0 >= 0) Replacement map: {n^0-walker^0 >= 0 -> 1+n^0-n-walker^0 >= 0, -1+walker^0 >= 0 -> -1+walker^0 >= 0, -1+z^0 >= 0 -> z^0-n >= 0} Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)] Blocked [{}, {}, {28[T]}] Step with 26 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T] Blocked [{}, {}, {28[T]}, {}] Step with 25 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {}, {28[T]}, {}, {}] Step with 23 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {}, {28[T]}, {}, {}, {}] Step with 20 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {}, {28[T]}, {}, {}, {}, {}] Step with 16 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)], 16[(1-choice^0 <= 0)] Blocked [{}, {}, {28[T]}, {}, {}, {}, {}, {}] Covered Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {}, {28[T]}, {}, {}, {}, {16[T]}] Step with 17 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)], 17[(choice^0 <= 0)] Blocked [{}, {}, {28[T]}, {}, {}, {}, {16[T]}, {}] Accelerate Start location: l9 Program variables: choice^0 i^0 n^0 pos^0 seq^0 walker^0 z^0 15: l0 -> l1 : T, cost: 1 16: l2 -> l3 : walker^0'=1+walker^0, 1-choice^0 <= 0, cost: 1 17: l2 -> l3 : walker^0'=-1+walker^0, choice^0 <= 0, cost: 1 26: l3 -> l8 : T, cost: 1 28: l3 -> l3 : choice^0'=1, walker^0'=n+walker^0, z^0'=z^0-n, (1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0), cost: 1 29: l3 -> l3 : choice^0'=0, walker^0'=-n2+walker^0, z^0'=z^0-n2, (-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0), cost: 1 18: l5 -> l2 : i^0'=1+seq^0, seq^0'=1+seq^0, z^0'=z^post5, (-z^post5 <= 0 /\ i^0 <= 0), cost: 1 19: l5 -> l2 : i^0'=-1+i^0, (choice^0 <= 0 /\ 1-i^0 <= 0), cost: 1 20: l6 -> l2 : z^0'=-1+z^0, 1-z^0 <= 0, cost: 1 21: l6 -> l5 : z^0 <= 0, cost: 1 22: l7 -> l0 : walker^0 <= 0, cost: 1 23: l7 -> l6 : choice^0'=choice^post10, (1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0), cost: 1 24: l8 -> l0 : 1+n^0-walker^0 <= 0, cost: 1 25: l8 -> l7 : -n^0+walker^0 <= 0, cost: 1 27: l9 -> l3 : i^0'=1, n^0'=2, pos^0'=0, seq^0'=1, walker^0'=1, z^0'=z^post4, -z^post4 <= 0, cost: 1 Loop Acceleration Original rule: l3 -> l3 : choice^0'=0, walker^0'=-1+walker^0, z^0'=-1+z^0, (-n^0+walker^0 <= 0 /\ 1-walker^0 <= 0 /\ 1-z^0 <= 0), cost: 1 New rule: l3 -> l3 : choice^0'=0, walker^0'=-n2+walker^0, z^0'=z^0-n2, (-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0), cost: 1 n^0-walker^0 >= 0 [0]: monotonic increase yields n^0-walker^0 >= 0 -1+walker^0 >= 0 [0]: montonic decrease yields -n2+walker^0 >= 0 -1+walker^0 >= 0 [1]: eventual increase yields (1 <= 0 /\ -1+walker^0 >= 0) -1+z^0 >= 0 [0]: montonic decrease yields z^0-n2 >= 0 -1+z^0 >= 0 [1]: eventual increase yields (1 <= 0 /\ -1+z^0 >= 0) Replacement map: {n^0-walker^0 >= 0 -> n^0-walker^0 >= 0, -1+walker^0 >= 0 -> -n2+walker^0 >= 0, -1+z^0 >= 0 -> z^0-n2 >= 0} Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 29[(-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0)] Blocked [{}, {}, {28[T]}, {29[T]}] Accelerate Start location: l9 Program variables: choice^0 i^0 n^0 pos^0 seq^0 walker^0 z^0 15: l0 -> l1 : T, cost: 1 16: l2 -> l3 : walker^0'=1+walker^0, 1-choice^0 <= 0, cost: 1 17: l2 -> l3 : walker^0'=-1+walker^0, choice^0 <= 0, cost: 1 26: l3 -> l8 : T, cost: 1 28: l3 -> l3 : choice^0'=1, walker^0'=n+walker^0, z^0'=z^0-n, (1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0), cost: 1 29: l3 -> l3 : choice^0'=0, walker^0'=-n2+walker^0, z^0'=z^0-n2, (-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0), cost: 1 30: l3 -> l3 : choice^0'=0, walker^0'=n3*n1+walker^0-n3*n2, z^0'=z^0-n3*n1-n3*n2, (-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0), cost: 1 18: l5 -> l2 : i^0'=1+seq^0, seq^0'=1+seq^0, z^0'=z^post5, (-z^post5 <= 0 /\ i^0 <= 0), cost: 1 19: l5 -> l2 : i^0'=-1+i^0, (choice^0 <= 0 /\ 1-i^0 <= 0), cost: 1 20: l6 -> l2 : z^0'=-1+z^0, 1-z^0 <= 0, cost: 1 21: l6 -> l5 : z^0 <= 0, cost: 1 22: l7 -> l0 : walker^0 <= 0, cost: 1 23: l7 -> l6 : choice^0'=choice^post10, (1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0), cost: 1 24: l8 -> l0 : 1+n^0-walker^0 <= 0, cost: 1 25: l8 -> l7 : -n^0+walker^0 <= 0, cost: 1 27: l9 -> l3 : i^0'=1, n^0'=2, pos^0'=0, seq^0'=1, walker^0'=1, z^0'=z^post4, -z^post4 <= 0, cost: 1 Loop Acceleration Original rule: l3 -> l3 : choice^0'=0, walker^0'=n1-n2+walker^0, z^0'=-n1+z^0-n2, (-1+n2 >= 0 /\ -n1+z^0-n2 >= 0 /\ n1-n2+walker^0 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ 1-n1+n^0-walker^0 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -n1+z^0 >= 0), cost: 1 New rule: l3 -> l3 : choice^0'=0, walker^0'=n3*n1+walker^0-n3*n2, z^0'=z^0-n3*n1-n3*n2, (-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0), cost: 1 -1+n2 >= 0 [0]: monotonic increase yields -1+n2 >= 0 -n1+z^0-n2 >= 0 [0]: montonic decrease yields -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0, dependencies: -1+n2 >= 0 -1+n1 >= 0 -n1+z^0-n2 >= 0 [1]: eventual decrease yields (-n1+z^0-n2 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0), dependencies: -1+n2 >= 0 -1+n1 >= 0 -n1+z^0-n2 >= 0 [2]: eventual increase yields (-n1+z^0-n2 >= 0 /\ n1+n2 <= 0), dependencies: -1+n2 >= 0 -1+n1 >= 0 n1-n2+walker^0 >= 0 [0]: montonic decrease yields -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0, dependencies: -1+walker^0 >= 0 n1-n2+walker^0 >= 0 [1]: eventual decrease yields (n1-n2+walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0) n1-n2+walker^0 >= 0 [2]: eventual increase yields (-n1+n2 <= 0 /\ n1-n2+walker^0 >= 0) -1+walker^0 >= 0 [0]: eventual decrease yields (-1+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0) -1+walker^0 >= 0 [1]: eventual increase yields (-n1+n2 <= 0 /\ -1+walker^0 >= 0) -1+n1 >= 0 [0]: monotonic increase yields -1+n1 >= 0 1-n1+n^0-walker^0 >= 0 [0]: montonic decrease yields 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0, dependencies: -n1+n^0-walker^0 >= 0 1-n1+n^0-walker^0 >= 0 [1]: eventual decrease yields (1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ 1-n1+n^0-walker^0 >= 0) 1-n1+n^0-walker^0 >= 0 [2]: eventual increase yields (n1-n2 <= 0 /\ 1-n1+n^0-walker^0 >= 0) -n1+n^0-walker^0 >= 0 [0]: eventual decrease yields ((-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -n1+n^0-walker^0 >= 0) -n1+n^0-walker^0 >= 0 [1]: eventual increase yields (n1-n2 <= 0 /\ -n1+n^0-walker^0 >= 0) -n1+z^0 >= 0 [0]: montonic decrease yields -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0, dependencies: -1+n2 >= 0 -n1+z^0-n2 >= 0 -n1+z^0 >= 0 [1]: eventual increase yields (n1+n2 <= 0 /\ -n1+z^0 >= 0), dependencies: -1+n2 >= 0 -1+n1 >= 0 Replacement map: {-1+n2 >= 0 -> -1+n2 >= 0, -n1+z^0-n2 >= 0 -> -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0, n1-n2+walker^0 >= 0 -> -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0, -1+walker^0 >= 0 -> (-1+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0), -1+n1 >= 0 -> -1+n1 >= 0, 1-n1+n^0-walker^0 >= 0 -> 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0, -n1+n^0-walker^0 >= 0 -> ((-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -n1+n^0-walker^0 >= 0), -n1+z^0 >= 0 -> -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0} Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)] Blocked [{}, {}, {30[T]}] Step with 26 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T] Blocked [{}, {}, {30[T]}, {}] Step with 25 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {}, {30[T]}, {}, {}] Step with 23 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {}, {30[T]}, {}, {}, {}] Step with 20 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {}, {30[T]}, {}, {}, {}, {}] Step with 17 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)], 17[(choice^0 <= 0)] Blocked [{}, {}, {30[T]}, {}, {}, {}, {}, {}] Covered Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {}, {30[T]}, {}, {}, {}, {17[T]}] Step with 16 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)], 16[(1-choice^0 <= 0)] Blocked [{}, {}, {30[T]}, {}, {}, {}, {17[T]}, {}] Covered Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {}, {30[T]}, {}, {}, {}, {16[T], 17[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {}, {30[T]}, {}, {}, {20[T]}] Step with 21 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)] Blocked [{}, {}, {30[T]}, {}, {}, {20[T]}, {}] Step with 19 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)] Blocked [{}, {}, {30[T]}, {}, {}, {20[T]}, {18[T]}, {}] Step with 17 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)], 17[(choice^0 <= 0)] Blocked [{}, {}, {30[T]}, {}, {}, {20[T]}, {18[T]}, {16[T]}, {}] Accelerate Start location: l9 Program variables: choice^0 i^0 n^0 pos^0 seq^0 walker^0 z^0 15: l0 -> l1 : T, cost: 1 16: l2 -> l3 : walker^0'=1+walker^0, 1-choice^0 <= 0, cost: 1 17: l2 -> l3 : walker^0'=-1+walker^0, choice^0 <= 0, cost: 1 26: l3 -> l8 : T, cost: 1 28: l3 -> l3 : choice^0'=1, walker^0'=n+walker^0, z^0'=z^0-n, (1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0), cost: 1 29: l3 -> l3 : choice^0'=0, walker^0'=-n2+walker^0, z^0'=z^0-n2, (-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0), cost: 1 30: l3 -> l3 : choice^0'=0, walker^0'=n3*n1+walker^0-n3*n2, z^0'=z^0-n3*n1-n3*n2, (-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0), cost: 1 31: l3 -> l3 : choice^0'=0, i^0'=i^0-n4, walker^0'=walker^0-n4, (i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0), cost: 1 18: l5 -> l2 : i^0'=1+seq^0, seq^0'=1+seq^0, z^0'=z^post5, (-z^post5 <= 0 /\ i^0 <= 0), cost: 1 19: l5 -> l2 : i^0'=-1+i^0, (choice^0 <= 0 /\ 1-i^0 <= 0), cost: 1 20: l6 -> l2 : z^0'=-1+z^0, 1-z^0 <= 0, cost: 1 21: l6 -> l5 : z^0 <= 0, cost: 1 22: l7 -> l0 : walker^0 <= 0, cost: 1 23: l7 -> l6 : choice^0'=choice^post10, (1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0), cost: 1 24: l8 -> l0 : 1+n^0-walker^0 <= 0, cost: 1 25: l8 -> l7 : -n^0+walker^0 <= 0, cost: 1 27: l9 -> l3 : i^0'=1, n^0'=2, pos^0'=0, seq^0'=1, walker^0'=1, z^0'=z^post4, -z^post4 <= 0, cost: 1 Loop Acceleration Original rule: l3 -> l3 : choice^0'=0, i^0'=-1+i^0, walker^0'=-1+walker^0, (-n^0+walker^0 <= 0 /\ z^0 <= 0 /\ 1-walker^0 <= 0 /\ 1-i^0 <= 0), cost: 1 New rule: l3 -> l3 : choice^0'=0, i^0'=i^0-n4, walker^0'=walker^0-n4, (i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0), cost: 1 n^0-walker^0 >= 0 [0]: monotonic increase yields n^0-walker^0 >= 0 -1+walker^0 >= 0 [0]: montonic decrease yields walker^0-n4 >= 0 -1+walker^0 >= 0 [1]: eventual increase yields (1 <= 0 /\ -1+walker^0 >= 0) -z^0 >= 0 [0]: monotonic increase yields -z^0 >= 0 -1+i^0 >= 0 [0]: montonic decrease yields i^0-n4 >= 0 -1+i^0 >= 0 [1]: eventual increase yields (1 <= 0 /\ -1+i^0 >= 0) Replacement map: {n^0-walker^0 >= 0 -> n^0-walker^0 >= 0, -1+walker^0 >= 0 -> walker^0-n4 >= 0, -z^0 >= 0 -> -z^0 >= 0, -1+i^0 >= 0 -> i^0-n4 >= 0} Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)] Blocked [{}, {}, {30[T]}, {31[T]}] Acceleration Failed marked recursive suffix as redundant Step with 26 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T] Blocked [{}, {}, {30[T]}, {31[T]}, {}] Step with 25 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {}, {30[T]}, {31[T]}, {}, {}] Step with 22 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 22[(walker^0 <= 0)] Blocked [{}, {}, {30[T]}, {31[T]}, {}, {23[T]}, {}] Step with 15 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 22[(walker^0 <= 0)], 15[T] Blocked [{}, {}, {30[T]}, {31[T]}, {}, {23[T]}, {}, {}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 22[(walker^0 <= 0)] Blocked [{}, {}, {30[T]}, {31[T]}, {}, {23[T]}, {15[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {}, {30[T]}, {31[T]}, {}, {22[T], 23[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T] Blocked [{}, {}, {30[T]}, {31[T]}, {25[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)] Blocked [{}, {}, {30[T]}, {26[T], 31[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)] Blocked [{}, {}, {30[T], 31[T]}] Step with 26 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T] Blocked [{}, {}, {30[T], 31[T]}, {}] Step with 25 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {}, {30[T], 31[T]}, {}, {}] Step with 22 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 22[(walker^0 <= 0)] Blocked [{}, {}, {30[T], 31[T]}, {}, {}, {}] Step with 15 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 22[(walker^0 <= 0)], 15[T] Blocked [{}, {}, {30[T], 31[T]}, {}, {}, {}, {}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 22[(walker^0 <= 0)] Blocked [{}, {}, {30[T], 31[T]}, {}, {}, {15[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {}, {30[T], 31[T]}, {}, {22[T]}] Step with 23 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {}, {30[T], 31[T]}, {}, {22[T]}, {}] Step with 21 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)] Blocked [{}, {}, {30[T], 31[T]}, {}, {22[T]}, {}, {}] Step with 19 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)] Blocked [{}, {}, {30[T], 31[T]}, {}, {22[T]}, {}, {}, {}] Step with 17 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)], 17[(choice^0 <= 0)] Blocked [{}, {}, {30[T], 31[T]}, {}, {22[T]}, {}, {}, {}, {}] Covered Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)] Blocked [{}, {}, {30[T], 31[T]}, {}, {22[T]}, {}, {}, {17[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)] Blocked [{}, {}, {30[T], 31[T]}, {}, {22[T]}, {}, {19[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {}, {30[T], 31[T]}, {}, {22[T]}, {21[T]}] Step with 20 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {}, {30[T], 31[T]}, {}, {22[T]}, {21[T]}, {}] Step with 17 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)], 17[(choice^0 <= 0)] Blocked [{}, {}, {30[T], 31[T]}, {}, {22[T]}, {21[T]}, {}, {}] Covered Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {}, {30[T], 31[T]}, {}, {22[T]}, {21[T]}, {17[T]}] Step with 16 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)], 16[(1-choice^0 <= 0)] Blocked [{}, {}, {30[T], 31[T]}, {}, {22[T]}, {21[T]}, {17[T]}, {}] Covered Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {}, {30[T], 31[T]}, {}, {22[T]}, {21[T]}, {16[T], 17[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {}, {30[T], 31[T]}, {}, {22[T]}, {20[T], 21[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {}, {30[T], 31[T]}, {}, {22[T], 23[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T] Blocked [{}, {}, {30[T], 31[T]}, {25[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)] Blocked [{}, {}, {26[T], 30[T], 31[T]}] Step with 28 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)] Blocked [{}, {}, {26[T], 30[T], 31[T]}, {28[T]}] Accelerate Start location: l9 Program variables: choice^0 i^0 n^0 pos^0 seq^0 walker^0 z^0 15: l0 -> l1 : T, cost: 1 16: l2 -> l3 : walker^0'=1+walker^0, 1-choice^0 <= 0, cost: 1 17: l2 -> l3 : walker^0'=-1+walker^0, choice^0 <= 0, cost: 1 26: l3 -> l8 : T, cost: 1 28: l3 -> l3 : choice^0'=1, walker^0'=n+walker^0, z^0'=z^0-n, (1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0), cost: 1 29: l3 -> l3 : choice^0'=0, walker^0'=-n2+walker^0, z^0'=z^0-n2, (-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0), cost: 1 30: l3 -> l3 : choice^0'=0, walker^0'=n3*n1+walker^0-n3*n2, z^0'=z^0-n3*n1-n3*n2, (-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0), cost: 1 31: l3 -> l3 : choice^0'=0, i^0'=i^0-n4, walker^0'=walker^0-n4, (i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0), cost: 1 32: l3 -> l3 : choice^0'=1, walker^0'=n31*n6*n11-n31*n6*n22+walker^0+n6*n, z^0'=-n31*n6*n11-n31*n6*n22+z^0-n6*n, (-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0), cost: 1 18: l5 -> l2 : i^0'=1+seq^0, seq^0'=1+seq^0, z^0'=z^post5, (-z^post5 <= 0 /\ i^0 <= 0), cost: 1 19: l5 -> l2 : i^0'=-1+i^0, (choice^0 <= 0 /\ 1-i^0 <= 0), cost: 1 20: l6 -> l2 : z^0'=-1+z^0, 1-z^0 <= 0, cost: 1 21: l6 -> l5 : z^0 <= 0, cost: 1 22: l7 -> l0 : walker^0 <= 0, cost: 1 23: l7 -> l6 : choice^0'=choice^post10, (1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0), cost: 1 24: l8 -> l0 : 1+n^0-walker^0 <= 0, cost: 1 25: l8 -> l7 : -n^0+walker^0 <= 0, cost: 1 27: l9 -> l3 : i^0'=1, n^0'=2, pos^0'=0, seq^0'=1, walker^0'=1, z^0'=z^post4, -z^post4 <= 0, cost: 1 Loop Acceleration Original rule: l3 -> l3 : choice^0'=1, walker^0'=n31*n11+n+walker^0-n31*n22, z^0'=z^0-n31*n11-n-n31*n22, (z^0-n31*n11-n-n31*n22 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ z^0-n11-(-1+n31)*n22-(-1+n31)*n11 >= 0 /\ z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11 >= 0 /\ 1-n31*n11+n^0-n-walker^0+n31*n22 >= 0 /\ 1-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11 >= 0 /\ -1+walker^0 >= 0 /\ -1-(-1+n31)*n22+walker^0+(-1+n31)*n11 >= 0 /\ -n11+n^0-walker^0 >= 0), cost: 1 New rule: l3 -> l3 : choice^0'=1, walker^0'=n31*n6*n11-n31*n6*n22+walker^0+n6*n, z^0'=-n31*n6*n11-n31*n6*n22+z^0-n6*n, (-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0), cost: 1 z^0-n31*n11-n-n31*n22 >= 0 [0]: montonic decrease yields -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0, dependencies: -1+n31 >= 0 -1+n11 >= 0 -1+n >= 0 -1+n22 >= 0 z^0-n31*n11-n-n31*n22 >= 0 [1]: eventual decrease yields (z^0-n31*n11-n-n31*n22 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0) z^0-n31*n11-n-n31*n22 >= 0 [2]: eventual increase yields (z^0-n31*n11-n-n31*n22 >= 0 /\ n31*n11+n+n31*n22 <= 0) -1+n31 >= 0 [0]: monotonic increase yields -1+n31 >= 0 -1+n11 >= 0 [0]: monotonic increase yields -1+n11 >= 0 z^0-n11-(-1+n31)*n22-(-1+n31)*n11 >= 0 [0]: montonic decrease yields -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0, dependencies: z^0-n31*n11-n-n31*n22 >= 0 -1+n >= 0 -1+n22 >= 0 z^0-n11-(-1+n31)*n22-(-1+n31)*n11 >= 0 [1]: eventual decrease yields (z^0-n11-(-1+n31)*n22-(-1+n31)*n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0) z^0-n11-(-1+n31)*n22-(-1+n31)*n11 >= 0 [2]: eventual increase yields (z^0-n11-(-1+n31)*n22-(-1+n31)*n11 >= 0 /\ n31*n11+n+n31*n22 <= 0) z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11 >= 0 [0]: montonic decrease yields -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0, dependencies: z^0-n31*n11-n-n31*n22 >= 0 -1+n >= 0 z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11 >= 0 [1]: eventual decrease yields (z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0) z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11 >= 0 [2]: eventual increase yields (z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11 >= 0 /\ n31*n11+n+n31*n22 <= 0) 1-n31*n11+n^0-n-walker^0+n31*n22 >= 0 [0]: montonic decrease yields 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0, dependencies: -1+n11 >= 0 -n11+n^0-walker^0 >= 0 1-n31*n11+n^0-n-walker^0+n31*n22 >= 0 [1]: eventual decrease yields (1-n31*n11+n^0-n-walker^0+n31*n22 >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0) 1-n31*n11+n^0-n-walker^0+n31*n22 >= 0 [2]: eventual increase yields (1-n31*n11+n^0-n-walker^0+n31*n22 >= 0 /\ n31*n11+n-n31*n22 <= 0) 1-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 [0]: montonic decrease yields 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0, dependencies: -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 1-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 [1]: eventual decrease yields (1-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0) 1-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 [2]: eventual increase yields (1-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ n31*n11+n-n31*n22 <= 0) -1+n >= 0 [0]: monotonic increase yields -1+n >= 0 -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 [0]: montonic decrease yields -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0, dependencies: -1+n31 >= 0 -1+n11 >= 0 1-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 -1+n >= 0 -n11+n^0-walker^0 >= 0 -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 [1]: eventual decrease yields (-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0) -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 [2]: eventual increase yields (-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ n31*n11+n-n31*n22 <= 0) -1+n22 >= 0 [0]: monotonic increase yields -1+n22 >= 0 -1+n31*n11+walker^0-n31*n22 >= 0 [0]: eventual decrease yields (-1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0) -1+n31*n11+walker^0-n31*n22 >= 0 [1]: eventual increase yields (-n31*n11-n+n31*n22 <= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0) n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11 >= 0 [0]: montonic decrease yields (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0, dependencies: -1+n31*n11+walker^0-n31*n22 >= 0 n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11 >= 0 [1]: eventual increase yields (-n31*n11-n+n31*n22 <= 0 /\ n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11 >= 0) -1+walker^0 >= 0 [0]: monotonic increase yields -1+walker^0 >= 0, dependencies: -1+n >= 0 -1+n31*n11+walker^0-n31*n22 >= 0 -1-(-1+n31)*n22+walker^0+(-1+n31)*n11 >= 0 [0]: montonic decrease yields -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0, dependencies: -1+n31 >= 0 -1+n11 >= 0 -1+n22 >= 0 -1+n31*n11+walker^0-n31*n22 >= 0 -1+walker^0 >= 0 -1-(-1+n31)*n22+walker^0+(-1+n31)*n11 >= 0 [1]: eventual increase yields (-n31*n11-n+n31*n22 <= 0 /\ -1-(-1+n31)*n22+walker^0+(-1+n31)*n11 >= 0) -n11+n^0-walker^0 >= 0 [0]: eventual decrease yields (-n11+n^0-walker^0 >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0) -n11+n^0-walker^0 >= 0 [1]: eventual increase yields (n31*n11+n-n31*n22 <= 0 /\ -n11+n^0-walker^0 >= 0) Replacement map: {z^0-n31*n11-n-n31*n22 >= 0 -> -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0, -1+n31 >= 0 -> -1+n31 >= 0, -1+n11 >= 0 -> -1+n11 >= 0, z^0-n11-(-1+n31)*n22-(-1+n31)*n11 >= 0 -> -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0, z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11 >= 0 -> -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0, 1-n31*n11+n^0-n-walker^0+n31*n22 >= 0 -> 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0, 1-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 -> 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0, -1+n >= 0 -> -1+n >= 0, -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 -> (-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0), -1+n22 >= 0 -> -1+n22 >= 0, -1+n31*n11+walker^0-n31*n22 >= 0 -> (-1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0), n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11 >= 0 -> (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0, -1+walker^0 >= 0 -> -1+walker^0 >= 0, -1-(-1+n31)*n22+walker^0+(-1+n31)*n11 >= 0 -> -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0, -n11+n^0-walker^0 >= 0 -> (-n11+n^0-walker^0 >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)} Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)] Blocked [{}, {}, {32[T]}] Step with 26 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T] Blocked [{}, {}, {32[T]}, {}] Step with 25 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {}, {32[T]}, {}, {}] Step with 23 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {}, {32[T]}, {}, {}, {}] Step with 20 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {}, {32[T]}, {}, {}, {}, {}] Step with 16 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)], 16[(1-choice^0 <= 0)] Blocked [{}, {}, {32[T]}, {}, {}, {}, {}, {}] Covered Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {}, {32[T]}, {}, {}, {}, {16[T]}] Step with 17 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)], 17[(choice^0 <= 0)] Blocked [{}, {}, {32[T]}, {}, {}, {}, {16[T]}, {}] Covered Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {}, {32[T]}, {}, {}, {}, {16[T], 17[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {}, {32[T]}, {}, {}, {20[T]}] Step with 21 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)] Blocked [{}, {}, {32[T]}, {}, {}, {20[T]}, {}] Step with 19 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)] Blocked [{}, {}, {32[T]}, {}, {}, {20[T]}, {}, {}] Step with 17 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)], 17[(choice^0 <= 0)] Blocked [{}, {}, {32[T]}, {}, {}, {20[T]}, {}, {}, {}] Covered Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)] Blocked [{}, {}, {32[T]}, {}, {}, {20[T]}, {}, {17[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)] Blocked [{}, {}, {32[T]}, {}, {}, {20[T]}, {19[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {}, {32[T]}, {}, {}, {20[T], 21[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {}, {32[T]}, {}, {23[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T] Blocked [{}, {}, {32[T]}, {25[T]}] Step with 24 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 24[(1+n^0-walker^0 <= 0)] Blocked [{}, {}, {32[T]}, {25[T]}, {}] Step with 15 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 24[(1+n^0-walker^0 <= 0)], 15[T] Blocked [{}, {}, {32[T]}, {25[T]}, {}, {}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 24[(1+n^0-walker^0 <= 0)] Blocked [{}, {}, {32[T]}, {25[T]}, {15[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T] Blocked [{}, {}, {32[T]}, {24[T], 25[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)] Blocked [{}, {}, {26[T], 32[T]}] Step with 28 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)] Blocked [{}, {}, {26[T], 32[T]}, {28[T]}] Covered Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)] Blocked [{}, {}, {26[T], 28[T], 32[T]}] Step with 29 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 29[(-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0)] Blocked [{}, {}, {26[T], 28[T], 32[T]}, {29[T]}] Covered Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)] Blocked [{}, {}, {26[T], 28[T], 29[T], 32[T]}] Step with 31 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)] Blocked [{}, {}, {26[T], 28[T], 29[T], 30[T], 32[T]}, {31[T]}] Acceleration Failed marked recursive suffix as redundant Step with 26 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T] Blocked [{}, {}, {26[T], 28[T], 29[T], 30[T], 32[T]}, {31[T], 32[T]}, {}] Step with 25 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {}, {26[T], 28[T], 29[T], 30[T], 32[T]}, {31[T], 32[T]}, {24[T]}, {}] Step with 23 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {}, {26[T], 28[T], 29[T], 30[T], 32[T]}, {31[T], 32[T]}, {24[T]}, {}, {}] Step with 21 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)] Blocked [{}, {}, {26[T], 28[T], 29[T], 30[T], 32[T]}, {31[T], 32[T]}, {24[T]}, {}, {}, {}] Step with 18 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 18[(-z^post5 <= 0 /\ i^0 <= 0)] Blocked [{}, {}, {26[T], 28[T], 29[T], 30[T], 32[T]}, {31[T], 32[T]}, {24[T]}, {}, {}, {19[T]}, {}] Step with 17 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 18[(-z^post5 <= 0 /\ i^0 <= 0)], 17[(choice^0 <= 0)] Blocked [{}, {}, {26[T], 28[T], 29[T], 30[T], 32[T]}, {31[T], 32[T]}, {24[T]}, {}, {}, {19[T]}, {}, {}] Accelerate and Drop Start location: l9 Program variables: choice^0 i^0 n^0 pos^0 seq^0 walker^0 z^0 15: l0 -> l1 : T, cost: 1 16: l2 -> l3 : walker^0'=1+walker^0, 1-choice^0 <= 0, cost: 1 17: l2 -> l3 : walker^0'=-1+walker^0, choice^0 <= 0, cost: 1 26: l3 -> l8 : T, cost: 1 28: l3 -> l3 : choice^0'=1, walker^0'=n+walker^0, z^0'=z^0-n, (1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0), cost: 1 29: l3 -> l3 : choice^0'=0, walker^0'=-n2+walker^0, z^0'=z^0-n2, (-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0), cost: 1 30: l3 -> l3 : choice^0'=0, walker^0'=n3*n1+walker^0-n3*n2, z^0'=z^0-n3*n1-n3*n2, (-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0), cost: 1 31: l3 -> l3 : choice^0'=0, i^0'=i^0-n4, walker^0'=walker^0-n4, (i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0), cost: 1 32: l3 -> l3 : choice^0'=1, walker^0'=n31*n6*n11-n31*n6*n22+walker^0+n6*n, z^0'=-n31*n6*n11-n31*n6*n22+z^0-n6*n, (-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0), cost: 1 33: l3 -> l3 : choice^0'=0, i^0'=seq^0+n9, seq^0'=seq^0+n9, walker^0'=-n9+walker^0, z^0'=0, (-1+n9 >= 0 /\ n^0-walker^0 >= 0 /\ 1-seq^0-n9 >= 0 /\ -n9+walker^0 >= 0 /\ -z^0 >= 0 /\ -i^0 >= 0), cost: 1 18: l5 -> l2 : i^0'=1+seq^0, seq^0'=1+seq^0, z^0'=z^post5, (-z^post5 <= 0 /\ i^0 <= 0), cost: 1 19: l5 -> l2 : i^0'=-1+i^0, (choice^0 <= 0 /\ 1-i^0 <= 0), cost: 1 20: l6 -> l2 : z^0'=-1+z^0, 1-z^0 <= 0, cost: 1 21: l6 -> l5 : z^0 <= 0, cost: 1 22: l7 -> l0 : walker^0 <= 0, cost: 1 23: l7 -> l6 : choice^0'=choice^post10, (1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0), cost: 1 24: l8 -> l0 : 1+n^0-walker^0 <= 0, cost: 1 25: l8 -> l7 : -n^0+walker^0 <= 0, cost: 1 27: l9 -> l3 : i^0'=1, n^0'=2, pos^0'=0, seq^0'=1, walker^0'=1, z^0'=z^post4, -z^post4 <= 0, cost: 1 Loop Acceleration Original rule: l3 -> l3 : choice^0'=0, i^0'=1+seq^0, seq^0'=1+seq^0, walker^0'=-1+walker^0, z^0'=z^post51, (-n^0+walker^0 <= 0 /\ z^0 <= 0 /\ 1-walker^0 <= 0 /\ i^0 <= 0 /\ -z^post51 <= 0), cost: 1 New rule: l3 -> l3 : choice^0'=0, i^0'=seq^0+n9, seq^0'=seq^0+n9, walker^0'=-n9+walker^0, z^0'=z^post51, (-1+n9 >= 0 /\ n^0-walker^0 >= 0 /\ 1-seq^0-n9 >= 0 /\ -n9+walker^0 >= 0 /\ -z^0 >= 0 /\ -i^0 >= 0 /\ -z^post51 >= 0 /\ z^post51 >= 0), cost: 1 n^0-walker^0 >= 0 [0]: monotonic increase yields n^0-walker^0 >= 0 -1+walker^0 >= 0 [0]: montonic decrease yields -n9+walker^0 >= 0 -1+walker^0 >= 0 [1]: eventual increase yields (1 <= 0 /\ -1+walker^0 >= 0) -z^0 >= 0 [0]: eventual decrease yields (-z^0 >= 0 /\ -z^post51 >= 0) -z^0 >= 0 [1]: eventual increase yields (-z^0+z^post51 <= 0 /\ -z^0 >= 0) -i^0 >= 0 [0]: eventual decrease yields (1-seq^0-n9 >= 0 /\ -i^0 >= 0) z^post51 >= 0 [0]: monotonic increase yields z^post51 >= 0 Replacement map: {n^0-walker^0 >= 0 -> n^0-walker^0 >= 0, -1+walker^0 >= 0 -> -n9+walker^0 >= 0, -z^0 >= 0 -> (-z^0 >= 0 /\ -z^post51 >= 0), -i^0 >= 0 -> (1-seq^0-n9 >= 0 /\ -i^0 >= 0), z^post51 >= 0 -> z^post51 >= 0} made implied equalities explicit Original rule: l3 -> l3 : choice^0'=0, i^0'=seq^0+n9, seq^0'=seq^0+n9, walker^0'=-n9+walker^0, z^0'=z^post51, (-1+n9 >= 0 /\ n^0-walker^0 >= 0 /\ 1-seq^0-n9 >= 0 /\ -n9+walker^0 >= 0 /\ -z^0 >= 0 /\ -i^0 >= 0 /\ -z^post51 >= 0 /\ z^post51 >= 0), cost: 1 New rule: l3 -> l3 : choice^0'=0, i^0'=seq^0+n9, seq^0'=seq^0+n9, walker^0'=-n9+walker^0, z^0'=z^post51, (-1+n9 >= 0 /\ n^0-walker^0 >= 0 /\ 1-seq^0-n9 >= 0 /\ -n9+walker^0 >= 0 /\ -z^0 >= 0 /\ -i^0 >= 0 /\ -z^post51 >= 0 /\ z^post51 >= 0 /\ z^post51 == 0), cost: 1 Propagated Equalities Original rule: l3 -> l3 : choice^0'=0, i^0'=seq^0+n9, seq^0'=seq^0+n9, walker^0'=-n9+walker^0, z^0'=z^post51, (-1+n9 >= 0 /\ n^0-walker^0 >= 0 /\ 1-seq^0-n9 >= 0 /\ -n9+walker^0 >= 0 /\ -z^0 >= 0 /\ -i^0 >= 0 /\ -z^post51 >= 0 /\ z^post51 >= 0 /\ z^post51 == 0), cost: 1 New rule: l3 -> l3 : choice^0'=0, i^0'=seq^0+n9, seq^0'=seq^0+n9, walker^0'=-n9+walker^0, z^0'=0, (0 >= 0 /\ 0 == 0 /\ -1+n9 >= 0 /\ n^0-walker^0 >= 0 /\ 1-seq^0-n9 >= 0 /\ -n9+walker^0 >= 0 /\ -z^0 >= 0 /\ -i^0 >= 0), cost: 1 propagated equality z^post51 = 0 Simplified Guard Original rule: l3 -> l3 : choice^0'=0, i^0'=seq^0+n9, seq^0'=seq^0+n9, walker^0'=-n9+walker^0, z^0'=0, (0 >= 0 /\ 0 == 0 /\ -1+n9 >= 0 /\ n^0-walker^0 >= 0 /\ 1-seq^0-n9 >= 0 /\ -n9+walker^0 >= 0 /\ -z^0 >= 0 /\ -i^0 >= 0), cost: 1 New rule: l3 -> l3 : choice^0'=0, i^0'=seq^0+n9, seq^0'=seq^0+n9, walker^0'=-n9+walker^0, z^0'=0, (-1+n9 >= 0 /\ n^0-walker^0 >= 0 /\ 1-seq^0-n9 >= 0 /\ -n9+walker^0 >= 0 /\ -z^0 >= 0 /\ -i^0 >= 0), cost: 1 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)] Blocked [{}, {}, {26[T], 28[T], 29[T], 30[T], 32[T]}, {26[T], 31[T], 32[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)] Blocked [{}, {}, {26[T], 28[T], 29[T], 30[T], 31[T], 32[T]}] Backtrack Trace 27[(-z^post4 <= 0)] Blocked [{}, {32[T]}] Step with 26 Trace 27[(-z^post4 <= 0)], 26[T] Blocked [{}, {32[T]}, {}] Step with 25 Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {32[T]}, {}, {}] Step with 23 Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {32[T]}, {}, {}, {}] Step with 21 Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)] Blocked [{}, {32[T]}, {}, {}, {}, {}] Step with 19 Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)] Blocked [{}, {32[T]}, {}, {}, {}, {18[T]}, {}] Step with 17 Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)], 17[(choice^0 <= 0)] Blocked [{}, {32[T]}, {}, {}, {}, {18[T]}, {}, {}] Covered Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)] Blocked [{}, {32[T]}, {}, {}, {}, {18[T]}, {17[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)] Blocked [{}, {32[T]}, {}, {}, {}, {18[T], 19[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {32[T]}, {}, {}, {21[T]}] Step with 20 Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {32[T]}, {}, {}, {21[T]}, {}] Step with 17 Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)], 17[(choice^0 <= 0)] Blocked [{}, {32[T]}, {}, {}, {21[T]}, {}, {}] Covered Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {32[T]}, {}, {}, {21[T]}, {17[T]}] Step with 16 Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)], 16[(1-choice^0 <= 0)] Blocked [{}, {32[T]}, {}, {}, {21[T]}, {17[T]}, {}] Covered Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {32[T]}, {}, {}, {21[T]}, {16[T], 17[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {32[T]}, {}, {}, {20[T], 21[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {32[T]}, {}, {23[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 26[T] Blocked [{}, {32[T]}, {25[T]}] Backtrack Trace 27[(-z^post4 <= 0)] Blocked [{}, {26[T], 32[T]}] Step with 28 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)] Blocked [{}, {26[T], 32[T]}, {28[T]}] Step with 29 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 29[(-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0)] Blocked [{}, {26[T], 32[T]}, {28[T]}, {29[T]}] Covered Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)] Blocked [{}, {26[T], 32[T]}, {28[T], 29[T]}] Step with 31 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)] Blocked [{}, {26[T], 32[T]}, {28[T], 29[T], 30[T]}, {31[T]}] Acceleration Failed marked recursive suffix as redundant Step with 26 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T] Blocked [{}, {26[T], 32[T]}, {28[T], 29[T], 30[T]}, {31[T], 32[T], 33[T]}, {}] Step with 25 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {26[T], 32[T]}, {28[T], 29[T], 30[T]}, {31[T], 32[T], 33[T]}, {}, {}] Step with 23 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {26[T], 32[T]}, {28[T], 29[T], 30[T]}, {31[T], 32[T], 33[T]}, {}, {}, {}] Step with 21 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)] Blocked [{}, {26[T], 32[T]}, {28[T], 29[T], 30[T]}, {31[T], 32[T], 33[T]}, {}, {}, {20[T]}, {}] Step with 18 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 18[(-z^post5 <= 0 /\ i^0 <= 0)] Blocked [{}, {26[T], 32[T]}, {28[T], 29[T], 30[T]}, {31[T], 32[T], 33[T]}, {}, {}, {20[T]}, {19[T]}, {}] Step with 16 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 18[(-z^post5 <= 0 /\ i^0 <= 0)], 16[(1-choice^0 <= 0)] Blocked [{}, {26[T], 32[T]}, {28[T], 29[T], 30[T]}, {31[T], 32[T], 33[T]}, {}, {}, {20[T]}, {19[T]}, {}, {}] Accelerate and Drop Start location: l9 Program variables: choice^0 i^0 n^0 pos^0 seq^0 walker^0 z^0 15: l0 -> l1 : T, cost: 1 16: l2 -> l3 : walker^0'=1+walker^0, 1-choice^0 <= 0, cost: 1 17: l2 -> l3 : walker^0'=-1+walker^0, choice^0 <= 0, cost: 1 26: l3 -> l8 : T, cost: 1 28: l3 -> l3 : choice^0'=1, walker^0'=n+walker^0, z^0'=z^0-n, (1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0), cost: 1 29: l3 -> l3 : choice^0'=0, walker^0'=-n2+walker^0, z^0'=z^0-n2, (-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0), cost: 1 30: l3 -> l3 : choice^0'=0, walker^0'=n3*n1+walker^0-n3*n2, z^0'=z^0-n3*n1-n3*n2, (-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0), cost: 1 31: l3 -> l3 : choice^0'=0, i^0'=i^0-n4, walker^0'=walker^0-n4, (i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0), cost: 1 32: l3 -> l3 : choice^0'=1, walker^0'=n31*n6*n11-n31*n6*n22+walker^0+n6*n, z^0'=-n31*n6*n11-n31*n6*n22+z^0-n6*n, (-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0), cost: 1 33: l3 -> l3 : choice^0'=0, i^0'=seq^0+n9, seq^0'=seq^0+n9, walker^0'=-n9+walker^0, z^0'=0, (-1+n9 >= 0 /\ n^0-walker^0 >= 0 /\ 1-seq^0-n9 >= 0 /\ -n9+walker^0 >= 0 /\ -z^0 >= 0 /\ -i^0 >= 0), cost: 1 34: l3 -> l3 : choice^0'=1, i^0'=seq^0+n12, seq^0'=seq^0+n12, walker^0'=walker^0+n12, z^0'=0, (-1+walker^0 >= 0 /\ -1+n12 >= 0 /\ -z^0 >= 0 /\ 1-seq^0-n12 >= 0 /\ -i^0 >= 0 /\ 1+n^0-walker^0-n12 >= 0), cost: 1 18: l5 -> l2 : i^0'=1+seq^0, seq^0'=1+seq^0, z^0'=z^post5, (-z^post5 <= 0 /\ i^0 <= 0), cost: 1 19: l5 -> l2 : i^0'=-1+i^0, (choice^0 <= 0 /\ 1-i^0 <= 0), cost: 1 20: l6 -> l2 : z^0'=-1+z^0, 1-z^0 <= 0, cost: 1 21: l6 -> l5 : z^0 <= 0, cost: 1 22: l7 -> l0 : walker^0 <= 0, cost: 1 23: l7 -> l6 : choice^0'=choice^post10, (1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0), cost: 1 24: l8 -> l0 : 1+n^0-walker^0 <= 0, cost: 1 25: l8 -> l7 : -n^0+walker^0 <= 0, cost: 1 27: l9 -> l3 : i^0'=1, n^0'=2, pos^0'=0, seq^0'=1, walker^0'=1, z^0'=z^post4, -z^post4 <= 0, cost: 1 Loop Acceleration Original rule: l3 -> l3 : choice^0'=1, i^0'=1+seq^0, seq^0'=1+seq^0, walker^0'=1+walker^0, z^0'=z^post52, (-n^0+walker^0 <= 0 /\ z^0 <= 0 /\ 1-walker^0 <= 0 /\ -z^post52 <= 0 /\ i^0 <= 0), cost: 1 New rule: l3 -> l3 : choice^0'=1, i^0'=seq^0+n12, seq^0'=seq^0+n12, walker^0'=walker^0+n12, z^0'=z^post52, (-1+walker^0 >= 0 /\ -1+n12 >= 0 /\ -z^0 >= 0 /\ 1-seq^0-n12 >= 0 /\ -i^0 >= 0 /\ -z^post52 >= 0 /\ z^post52 >= 0 /\ 1+n^0-walker^0-n12 >= 0), cost: 1 n^0-walker^0 >= 0 [0]: montonic decrease yields 1+n^0-walker^0-n12 >= 0 n^0-walker^0 >= 0 [1]: eventual increase yields (1 <= 0 /\ n^0-walker^0 >= 0) -1+walker^0 >= 0 [0]: monotonic increase yields -1+walker^0 >= 0 -z^0 >= 0 [0]: eventual decrease yields (-z^0 >= 0 /\ -z^post52 >= 0) -z^0 >= 0 [1]: eventual increase yields (-z^0+z^post52 <= 0 /\ -z^0 >= 0) -i^0 >= 0 [0]: eventual decrease yields (1-seq^0-n12 >= 0 /\ -i^0 >= 0) z^post52 >= 0 [0]: monotonic increase yields z^post52 >= 0 Replacement map: {n^0-walker^0 >= 0 -> 1+n^0-walker^0-n12 >= 0, -1+walker^0 >= 0 -> -1+walker^0 >= 0, -z^0 >= 0 -> (-z^0 >= 0 /\ -z^post52 >= 0), -i^0 >= 0 -> (1-seq^0-n12 >= 0 /\ -i^0 >= 0), z^post52 >= 0 -> z^post52 >= 0} made implied equalities explicit Original rule: l3 -> l3 : choice^0'=1, i^0'=seq^0+n12, seq^0'=seq^0+n12, walker^0'=walker^0+n12, z^0'=z^post52, (-1+walker^0 >= 0 /\ -1+n12 >= 0 /\ -z^0 >= 0 /\ 1-seq^0-n12 >= 0 /\ -i^0 >= 0 /\ -z^post52 >= 0 /\ z^post52 >= 0 /\ 1+n^0-walker^0-n12 >= 0), cost: 1 New rule: l3 -> l3 : choice^0'=1, i^0'=seq^0+n12, seq^0'=seq^0+n12, walker^0'=walker^0+n12, z^0'=z^post52, (-1+walker^0 >= 0 /\ -1+n12 >= 0 /\ -z^0 >= 0 /\ 1-seq^0-n12 >= 0 /\ -i^0 >= 0 /\ -z^post52 >= 0 /\ z^post52 >= 0 /\ z^post52 == 0 /\ 1+n^0-walker^0-n12 >= 0), cost: 1 Propagated Equalities Original rule: l3 -> l3 : choice^0'=1, i^0'=seq^0+n12, seq^0'=seq^0+n12, walker^0'=walker^0+n12, z^0'=z^post52, (-1+walker^0 >= 0 /\ -1+n12 >= 0 /\ -z^0 >= 0 /\ 1-seq^0-n12 >= 0 /\ -i^0 >= 0 /\ -z^post52 >= 0 /\ z^post52 >= 0 /\ z^post52 == 0 /\ 1+n^0-walker^0-n12 >= 0), cost: 1 New rule: l3 -> l3 : choice^0'=1, i^0'=seq^0+n12, seq^0'=seq^0+n12, walker^0'=walker^0+n12, z^0'=0, (0 >= 0 /\ 0 == 0 /\ -1+walker^0 >= 0 /\ -1+n12 >= 0 /\ -z^0 >= 0 /\ 1-seq^0-n12 >= 0 /\ -i^0 >= 0 /\ 1+n^0-walker^0-n12 >= 0), cost: 1 propagated equality z^post52 = 0 Simplified Guard Original rule: l3 -> l3 : choice^0'=1, i^0'=seq^0+n12, seq^0'=seq^0+n12, walker^0'=walker^0+n12, z^0'=0, (0 >= 0 /\ 0 == 0 /\ -1+walker^0 >= 0 /\ -1+n12 >= 0 /\ -z^0 >= 0 /\ 1-seq^0-n12 >= 0 /\ -i^0 >= 0 /\ 1+n^0-walker^0-n12 >= 0), cost: 1 New rule: l3 -> l3 : choice^0'=1, i^0'=seq^0+n12, seq^0'=seq^0+n12, walker^0'=walker^0+n12, z^0'=0, (-1+walker^0 >= 0 /\ -1+n12 >= 0 /\ -z^0 >= 0 /\ 1-seq^0-n12 >= 0 /\ -i^0 >= 0 /\ 1+n^0-walker^0-n12 >= 0), cost: 1 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)] Blocked [{}, {26[T], 32[T]}, {28[T], 29[T], 30[T]}, {26[T], 31[T], 32[T], 33[T]}] Restart Step with 27 Trace 27[(-z^post4 <= 0)] Blocked [{}, {}] Step with 26 Trace 27[(-z^post4 <= 0)], 26[T] Blocked [{}, {}, {}] Step with 25 Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {}, {24[T]}, {}] Step with 23 Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {}, {24[T]}, {22[T]}, {}] Step with 20 Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {}, {24[T]}, {22[T]}, {}, {}] Step with 17 Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)], 17[(choice^0 <= 0)] Blocked [{}, {}, {24[T]}, {22[T]}, {}, {}, {}] Covered Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {}, {24[T]}, {22[T]}, {}, {17[T]}] Step with 16 Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)], 16[(1-choice^0 <= 0)] Blocked [{}, {}, {24[T]}, {22[T]}, {}, {17[T]}, {}] Covered Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {}, {24[T]}, {22[T]}, {}, {16[T], 17[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {}, {24[T]}, {22[T]}, {20[T]}] Step with 21 Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)] Blocked [{}, {}, {24[T]}, {22[T]}, {20[T]}, {}] Step with 19 Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)] Blocked [{}, {}, {24[T]}, {22[T]}, {20[T]}, {}, {}] Step with 17 Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)], 17[(choice^0 <= 0)] Blocked [{}, {}, {24[T]}, {22[T]}, {20[T]}, {}, {16[T]}, {}] Covered Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)] Blocked [{}, {}, {24[T]}, {22[T]}, {20[T]}, {}, {16[T], 17[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)] Blocked [{}, {}, {24[T]}, {22[T]}, {20[T]}, {19[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {}, {24[T]}, {22[T]}, {20[T], 21[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {}, {24[T]}, {22[T], 23[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 26[T] Blocked [{}, {}, {24[T], 25[T]}] Backtrack Trace 27[(-z^post4 <= 0)] Blocked [{}, {26[T]}] Step with 32 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)] Blocked [{}, {26[T]}, {32[T]}] Step with 29 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 29[(-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0)] Blocked [{}, {26[T]}, {30[T], 32[T], 33[T], 34[T]}, {29[T]}] Covered Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)] Blocked [{}, {26[T]}, {29[T], 30[T], 32[T], 33[T], 34[T]}] Step with 28 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)] Blocked [{}, {26[T]}, {29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T]}] Covered Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}] Step with 31 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}] Step with 26 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}, {}] Step with 25 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}, {}, {}] Step with 23 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}, {}, {}, {}] Step with 21 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}, {}, {}, {}, {}] Step with 18 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 18[(-z^post5 <= 0 /\ i^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}, {}, {}, {}, {19[T]}, {}] Step with 17 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 18[(-z^post5 <= 0 /\ i^0 <= 0)], 17[(choice^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}, {}, {}, {}, {19[T]}, {}, {}] Covered Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 18[(-z^post5 <= 0 /\ i^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}, {}, {}, {}, {19[T]}, {17[T]}] Step with 16 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 18[(-z^post5 <= 0 /\ i^0 <= 0)], 16[(1-choice^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}, {}, {}, {}, {19[T]}, {17[T]}, {}] Covered Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 18[(-z^post5 <= 0 /\ i^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}, {}, {}, {}, {19[T]}, {16[T], 17[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}, {}, {}, {}, {18[T], 19[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}, {}, {}, {21[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}, {}, {23[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}, {25[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {26[T], 31[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}] Step with 26 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {}] Step with 25 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {}, {}] Step with 23 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {}, {}, {}] Step with 21 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {}, {}, {}, {}] Step with 19 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {}, {}, {}, {18[T]}, {}] Step with 17 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)], 17[(choice^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {}, {}, {}, {18[T]}, {16[T]}, {}] Covered Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {}, {}, {}, {18[T]}, {16[T], 17[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {}, {}, {}, {18[T], 19[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {}, {}, {21[T]}] Step with 20 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {}, {}, {21[T]}, {}] Step with 17 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)], 17[(choice^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {}, {}, {21[T]}, {}, {}] Covered Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {}, {}, {21[T]}, {17[T]}] Step with 16 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)], 16[(1-choice^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {}, {}, {21[T]}, {17[T]}, {}] Covered Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {}, {}, {21[T]}, {16[T], 17[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {}, {}, {20[T], 21[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {}, {23[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {25[T]}] Step with 24 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 24[(1+n^0-walker^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {25[T]}, {}] Step with 15 Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 24[(1+n^0-walker^0 <= 0)], 15[T] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {25[T]}, {}, {}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T], 24[(1+n^0-walker^0 <= 0)] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {25[T]}, {15[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)], 26[T] Blocked [{}, {26[T]}, {28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {24[T], 25[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)] Blocked [{}, {26[T]}, {26[T], 28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}] Backtrack Trace 27[(-z^post4 <= 0)] Blocked [{}, {26[T], 32[T]}] Step with 30 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {30[T]}] Step with 29 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 29[(-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {30[T]}, {29[T]}] Covered Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {29[T], 30[T]}] Step with 28 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {29[T], 30[T]}, {28[T]}] Covered Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T]}] Step with 31 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T]}, {31[T]}] Step with 26 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T]}, {31[T]}, {}] Step with 25 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T]}, {31[T]}, {24[T]}, {}] Step with 22 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 22[(walker^0 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T]}, {31[T]}, {24[T]}, {23[T]}, {}] Step with 15 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 22[(walker^0 <= 0)], 15[T] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T]}, {31[T]}, {24[T]}, {23[T]}, {}, {}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 22[(walker^0 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T]}, {31[T]}, {24[T]}, {23[T]}, {15[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T]}, {31[T]}, {24[T]}, {22[T], 23[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T]}, {31[T]}, {24[T], 25[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T]}, {26[T], 31[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}] Step with 26 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}, {}] Step with 25 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}, {}, {}] Step with 22 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 22[(walker^0 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}, {}, {}, {}] Step with 15 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 22[(walker^0 <= 0)], 15[T] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}, {}, {}, {}, {}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 22[(walker^0 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}, {}, {}, {15[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}, {}, {22[T]}] Step with 23 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}, {}, {22[T]}, {}] Step with 20 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}, {}, {22[T]}, {}, {}] Step with 16 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)], 16[(1-choice^0 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}, {}, {22[T]}, {}, {}, {}] Covered Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}, {}, {22[T]}, {}, {16[T]}] Step with 17 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)], 17[(choice^0 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}, {}, {22[T]}, {}, {16[T]}, {}] Covered Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}, {}, {22[T]}, {}, {16[T], 17[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}, {}, {22[T]}, {20[T]}] Step with 21 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}, {}, {22[T]}, {20[T]}, {}] Step with 19 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}, {}, {22[T]}, {20[T]}, {}, {}] Step with 17 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)], 17[(choice^0 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}, {}, {22[T]}, {20[T]}, {}, {}, {}] Covered Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}, {}, {22[T]}, {20[T]}, {}, {17[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}, {}, {22[T]}, {20[T]}, {19[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}, {}, {22[T]}, {20[T], 21[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}, {}, {22[T], 23[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 26[T] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 30[T], 31[T]}, {25[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {26[T], 28[T], 29[T], 30[T], 31[T]}] Step with 32 Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)], 32[(-1+n6 >= 0 /\ -1+n31 >= 0 /\ -1+n11 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n31*n11-n-n31*n22-(-1+n6)*n >= 0 /\ -1+n >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22+n31*n11+walker^0-n31*n22+(-1+n6)*n >= 0 /\ -n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11 >= 0 /\ -1+n22 >= 0 /\ -1+n31*n11+walker^0-n31*n22 >= 0 /\ -1+walker^0 >= 0 /\ -(-1+n6)*n31*n11-(-1+n6)*n31*n22+z^0-n11-(-1+n31)*n22-n22-(-1+n31)*n11-(-1+n6)*n >= 0 /\ (-1+n6)*n31*n11-(-1+n6)*n31*n22+n11-(-1+n31)*n22-n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ 1-(-1+n6)*n31*n11+(-1+n6)*n31*n22-n31*n11+n^0-n-walker^0+n31*n22-(-1+n6)*n >= 0 /\ -n11+n^0-walker^0 >= 0 /\ -1+(-1+n6)*n31*n11-(-1+n6)*n31*n22-(-1+n31)*n22+walker^0+(-1+n31)*n11+(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+(-1+n31)*n22+n^0-walker^0-(-1+n31)*n11-(-1+n6)*n >= 0 /\ -(-1+n6)*n31*n11+(-1+n6)*n31*n22-n11+n^0-walker^0-(-1+n6)*n >= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {26[T], 28[T], 29[T], 30[T], 31[T]}, {32[T]}] Covered Trace 27[(-z^post4 <= 0)], 30[(-1+n2 >= 0 /\ -1+n3 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1 >= 0 /\ 1+(-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ (-1+n3)*n2-n1-(-1+n3)*n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2-n1+z^0-(-1+n3)*n1-n2 >= 0 /\ -1+walker^0 >= 0 /\ -1+n1 >= 0 /\ -n1+n^0-walker^0 >= 0 /\ -(-1+n3)*n2+n1+(-1+n3)*n1-n2+walker^0 >= 0 /\ -1-(-1+n3)*n2+(-1+n3)*n1+walker^0 >= 0)] Blocked [{}, {26[T], 32[T], 33[T], 34[T]}, {26[T], 28[T], 29[T], 30[T], 31[T], 32[T]}] Backtrack Trace 27[(-z^post4 <= 0)] Blocked [{}, {26[T], 30[T], 32[T], 33[T], 34[T]}] Step with 29 Trace 27[(-z^post4 <= 0)], 29[(-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0)] Blocked [{}, {26[T], 30[T], 32[T], 33[T], 34[T]}, {29[T]}] Step with 26 Trace 27[(-z^post4 <= 0)], 29[(-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0)], 26[T] Blocked [{}, {26[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 31[T]}, {}] Step with 25 Trace 27[(-z^post4 <= 0)], 29[(-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {26[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 31[T]}, {}, {}] Step with 22 Trace 27[(-z^post4 <= 0)], 29[(-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 22[(walker^0 <= 0)] Blocked [{}, {26[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 31[T]}, {}, {23[T]}, {}] Step with 15 Trace 27[(-z^post4 <= 0)], 29[(-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 22[(walker^0 <= 0)], 15[T] Blocked [{}, {26[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 31[T]}, {}, {23[T]}, {}, {}] Backtrack Trace 27[(-z^post4 <= 0)], 29[(-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 22[(walker^0 <= 0)] Blocked [{}, {26[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 31[T]}, {}, {23[T]}, {15[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 29[(-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {26[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 31[T]}, {}, {22[T], 23[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 29[(-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0)], 26[T] Blocked [{}, {26[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 29[T], 31[T]}, {25[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 29[(-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0)] Blocked [{}, {26[T], 30[T], 32[T], 33[T], 34[T]}, {26[T], 28[T], 29[T], 31[T]}] Backtrack Trace 27[(-z^post4 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}] Step with 28 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T]}] Step with 31 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T]}, {31[T]}] Step with 26 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T]}, {31[T]}, {}] Step with 25 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T]}, {31[T]}, {}, {}] Step with 23 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T]}, {31[T]}, {}, {22[T]}, {}] Step with 21 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T]}, {31[T]}, {}, {22[T]}, {}, {}] Step with 18 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 18[(-z^post5 <= 0 /\ i^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T]}, {31[T]}, {}, {22[T]}, {}, {19[T]}, {}] Step with 17 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 18[(-z^post5 <= 0 /\ i^0 <= 0)], 17[(choice^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T]}, {31[T]}, {}, {22[T]}, {}, {19[T]}, {}, {}] Covered Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 18[(-z^post5 <= 0 /\ i^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T]}, {31[T]}, {}, {22[T]}, {}, {19[T]}, {17[T]}] Step with 16 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 18[(-z^post5 <= 0 /\ i^0 <= 0)], 16[(1-choice^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T]}, {31[T]}, {}, {22[T]}, {}, {19[T]}, {17[T]}, {}] Covered Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 18[(-z^post5 <= 0 /\ i^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T]}, {31[T]}, {}, {22[T]}, {}, {19[T]}, {16[T], 17[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T]}, {31[T]}, {}, {22[T]}, {}, {18[T], 19[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T]}, {31[T]}, {}, {22[T]}, {21[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T]}, {31[T]}, {}, {22[T], 23[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T]}, {31[T]}, {25[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T]}, {26[T], 31[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}] Step with 26 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}, {}] Step with 25 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}, {}, {}] Step with 23 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}, {}, {}, {}] Step with 21 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}, {}, {}, {}, {}] Step with 19 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}, {}, {}, {}, {18[T]}, {}] Step with 17 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)], 17[(choice^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}, {}, {}, {}, {18[T]}, {16[T]}, {}] Covered Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)], 19[(choice^0 <= 0 /\ 1-i^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}, {}, {}, {}, {18[T]}, {16[T], 17[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 21[(z^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}, {}, {}, {}, {18[T], 19[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}, {}, {}, {21[T]}] Step with 20 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}, {}, {}, {21[T]}, {}] Step with 17 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)], 17[(choice^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}, {}, {}, {21[T]}, {}, {}] Covered Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}, {}, {}, {21[T]}, {17[T]}] Step with 16 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)], 16[(1-choice^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}, {}, {}, {21[T]}, {17[T]}, {}] Covered Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)], 20[(1-z^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}, {}, {}, {21[T]}, {16[T], 17[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 23[(1-walker^0 <= 0 /\ -choice^post10 <= 0 /\ -1+choice^post10 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}, {}, {}, {20[T], 21[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}, {}, {23[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}, {25[T]}] Step with 24 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 24[(1+n^0-walker^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}, {25[T]}, {}] Step with 15 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 24[(1+n^0-walker^0 <= 0)], 15[T] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}, {25[T]}, {}, {}] Backtrack Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T], 24[(1+n^0-walker^0 <= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}, {25[T]}, {15[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 26[T] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {28[T], 31[T]}, {24[T], 25[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {26[T], 28[T], 31[T]}] Step with 29 Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)], 29[(-1+n2 >= 0 /\ n^0-walker^0 >= 0 /\ z^0-n2 >= 0 /\ -n2+walker^0 >= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {26[T], 28[T], 30[T], 31[T], 32[T], 33[T], 34[T]}, {29[T]}] Covered Trace 27[(-z^post4 <= 0)], 28[(1+n^0-n-walker^0 >= 0 /\ -1+n >= 0 /\ -1+walker^0 >= 0 /\ z^0-n >= 0)] Blocked [{}, {26[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {26[T], 28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}] Backtrack Trace 27[(-z^post4 <= 0)] Blocked [{}, {26[T], 28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}] Step with 31 Trace 27[(-z^post4 <= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)] Blocked [{}, {26[T], 28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}] Step with 26 Trace 27[(-z^post4 <= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T] Blocked [{}, {26[T], 28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}, {}] Step with 25 Trace 27[(-z^post4 <= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {26[T], 28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}, {24[T]}, {}] Step with 22 Trace 27[(-z^post4 <= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 22[(walker^0 <= 0)] Blocked [{}, {26[T], 28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}, {24[T]}, {23[T]}, {}] Step with 15 Trace 27[(-z^post4 <= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 22[(walker^0 <= 0)], 15[T] Blocked [{}, {26[T], 28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}, {24[T]}, {23[T]}, {}, {}] Backtrack Trace 27[(-z^post4 <= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)], 22[(walker^0 <= 0)] Blocked [{}, {26[T], 28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}, {24[T]}, {23[T]}, {15[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T], 25[(-n^0+walker^0 <= 0)] Blocked [{}, {26[T], 28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}, {24[T]}, {22[T], 23[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)], 26[T] Blocked [{}, {26[T], 28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {31[T]}, {24[T], 25[T]}] Backtrack Trace 27[(-z^post4 <= 0)], 31[(i^0-n4 >= 0 /\ n^0-walker^0 >= 0 /\ walker^0-n4 >= 0 /\ -z^0 >= 0 /\ -1+n4 >= 0)] Blocked [{}, {26[T], 28[T], 29[T], 30[T], 32[T], 33[T], 34[T]}, {26[T], 31[T]}] Backtrack Trace 27[(-z^post4 <= 0)] Blocked [{}, {26[T], 28[T], 29[T], 30[T], 31[T], 32[T], 33[T], 34[T]}] Backtrack Trace Blocked [{27[T]}] Accept unknown Build SHA: a05f16bf13df659c382799650051f91bf6828c7b