WORST_CASE(Omega(0),?) Initial ITS Start location: l4 0: l0 -> l1 : st_14^0'=st_14^post0, y_13^0'=y_13^post0, rt_11^0'=rt_11^post0, x_15^0'=x_15^post0, (y_13^0-y_13^post0 == 0 /\ st_14^0-st_14^post0 == 0 /\ -st_14^0+rt_11^post0 == 0 /\ y_13^0 <= 0 /\ x_15^0-x_15^post0 == 0), cost: 1 1: l0 -> l2 : st_14^0'=st_14^post1, y_13^0'=y_13^post1, rt_11^0'=rt_11^post1, x_15^0'=x_15^post1, (rt_11^0-rt_11^post1 == 0 /\ 1-y_13^0 <= 0 /\ y_13^0-y_13^post1 == 0 /\ st_14^0-st_14^post1 == 0 /\ -x_15^post1+x_15^0 == 0), cost: 1 2: l2 -> l1 : st_14^0'=st_14^post2, y_13^0'=y_13^post2, rt_11^0'=rt_11^post2, x_15^0'=x_15^post2, (-y_13^post2+y_13^0 == 0 /\ st_14^0-st_14^post2 == 0 /\ rt_11^post2-st_14^0 == 0 /\ -x_15^post2+x_15^0 == 0 /\ x_15^0 <= 0), cost: 1 3: l2 -> l3 : st_14^0'=st_14^post3, y_13^0'=y_13^post3, rt_11^0'=rt_11^post3, x_15^0'=x_15^post3, (-rt_11^post3+rt_11^0 == 0 /\ -1+y_13^post3-y_13^0 == 0 /\ 1-x_15^0 <= 0 /\ y_13^0+x_15^post3-x_15^0 == 0 /\ st_14^0-st_14^post3 == 0), cost: 1 4: l3 -> l2 : st_14^0'=st_14^post4, y_13^0'=y_13^post4, rt_11^0'=rt_11^post4, x_15^0'=x_15^post4, (-rt_11^post4+rt_11^0 == 0 /\ -x_15^post4+x_15^0 == 0 /\ -y_13^post4+y_13^0 == 0 /\ -st_14^post4+st_14^0 == 0), cost: 1 5: l4 -> l0 : st_14^0'=st_14^post5, y_13^0'=y_13^post5, rt_11^0'=rt_11^post5, x_15^0'=x_15^post5, (y_13^0-y_13^post5 == 0 /\ x_15^0-x_15^post5 == 0 /\ st_14^0-st_14^post5 == 0 /\ rt_11^0-rt_11^post5 == 0), cost: 1 Removed unreachable rules and leafs Start location: l4 1: l0 -> l2 : st_14^0'=st_14^post1, y_13^0'=y_13^post1, rt_11^0'=rt_11^post1, x_15^0'=x_15^post1, (rt_11^0-rt_11^post1 == 0 /\ 1-y_13^0 <= 0 /\ y_13^0-y_13^post1 == 0 /\ st_14^0-st_14^post1 == 0 /\ -x_15^post1+x_15^0 == 0), cost: 1 3: l2 -> l3 : st_14^0'=st_14^post3, y_13^0'=y_13^post3, rt_11^0'=rt_11^post3, x_15^0'=x_15^post3, (-rt_11^post3+rt_11^0 == 0 /\ -1+y_13^post3-y_13^0 == 0 /\ 1-x_15^0 <= 0 /\ y_13^0+x_15^post3-x_15^0 == 0 /\ st_14^0-st_14^post3 == 0), cost: 1 4: l3 -> l2 : st_14^0'=st_14^post4, y_13^0'=y_13^post4, rt_11^0'=rt_11^post4, x_15^0'=x_15^post4, (-rt_11^post4+rt_11^0 == 0 /\ -x_15^post4+x_15^0 == 0 /\ -y_13^post4+y_13^0 == 0 /\ -st_14^post4+st_14^0 == 0), cost: 1 5: l4 -> l0 : st_14^0'=st_14^post5, y_13^0'=y_13^post5, rt_11^0'=rt_11^post5, x_15^0'=x_15^post5, (y_13^0-y_13^post5 == 0 /\ x_15^0-x_15^post5 == 0 /\ st_14^0-st_14^post5 == 0 /\ rt_11^0-rt_11^post5 == 0), cost: 1 Applied preprocessing Original rule: l0 -> l2 : st_14^0'=st_14^post1, y_13^0'=y_13^post1, rt_11^0'=rt_11^post1, x_15^0'=x_15^post1, (rt_11^0-rt_11^post1 == 0 /\ 1-y_13^0 <= 0 /\ y_13^0-y_13^post1 == 0 /\ st_14^0-st_14^post1 == 0 /\ -x_15^post1+x_15^0 == 0), cost: 1 New rule: l0 -> l2 : -1+y_13^0 >= 0, cost: 1 Applied preprocessing Original rule: l2 -> l3 : st_14^0'=st_14^post3, y_13^0'=y_13^post3, rt_11^0'=rt_11^post3, x_15^0'=x_15^post3, (-rt_11^post3+rt_11^0 == 0 /\ -1+y_13^post3-y_13^0 == 0 /\ 1-x_15^0 <= 0 /\ y_13^0+x_15^post3-x_15^0 == 0 /\ st_14^0-st_14^post3 == 0), cost: 1 New rule: l2 -> l3 : y_13^0'=1+y_13^0, x_15^0'=-y_13^0+x_15^0, -1+x_15^0 >= 0, cost: 1 Applied preprocessing Original rule: l3 -> l2 : st_14^0'=st_14^post4, y_13^0'=y_13^post4, rt_11^0'=rt_11^post4, x_15^0'=x_15^post4, (-rt_11^post4+rt_11^0 == 0 /\ -x_15^post4+x_15^0 == 0 /\ -y_13^post4+y_13^0 == 0 /\ -st_14^post4+st_14^0 == 0), cost: 1 New rule: l3 -> l2 : TRUE, cost: 1 Applied preprocessing Original rule: l4 -> l0 : st_14^0'=st_14^post5, y_13^0'=y_13^post5, rt_11^0'=rt_11^post5, x_15^0'=x_15^post5, (y_13^0-y_13^post5 == 0 /\ x_15^0-x_15^post5 == 0 /\ st_14^0-st_14^post5 == 0 /\ rt_11^0-rt_11^post5 == 0), cost: 1 New rule: l4 -> l0 : TRUE, cost: 1 Simplified rules Start location: l4 6: l0 -> l2 : -1+y_13^0 >= 0, cost: 1 7: l2 -> l3 : y_13^0'=1+y_13^0, x_15^0'=-y_13^0+x_15^0, -1+x_15^0 >= 0, cost: 1 8: l3 -> l2 : TRUE, cost: 1 9: l4 -> l0 : TRUE, cost: 1 Eliminating location l0 by chaining: Applied chaining First rule: l4 -> l0 : TRUE, cost: 1 Second rule: l0 -> l2 : -1+y_13^0 >= 0, cost: 1 New rule: l4 -> l2 : -1+y_13^0 >= 0, cost: 2 Applied deletion Removed the following rules: 6 9 Eliminating location l3 by chaining: Applied chaining First rule: l2 -> l3 : y_13^0'=1+y_13^0, x_15^0'=-y_13^0+x_15^0, -1+x_15^0 >= 0, cost: 1 Second rule: l3 -> l2 : TRUE, cost: 1 New rule: l2 -> l2 : y_13^0'=1+y_13^0, x_15^0'=-y_13^0+x_15^0, -1+x_15^0 >= 0, cost: 2 Applied deletion Removed the following rules: 7 8 Eliminated locations on linear paths Start location: l4 11: l2 -> l2 : y_13^0'=1+y_13^0, x_15^0'=-y_13^0+x_15^0, -1+x_15^0 >= 0, cost: 2 10: l4 -> l2 : -1+y_13^0 >= 0, cost: 2 Applied acceleration Original rule: l2 -> l2 : y_13^0'=1+y_13^0, x_15^0'=-y_13^0+x_15^0, -1+x_15^0 >= 0, cost: 2 New rule: l2 -> l2 : y_13^0'=y_13^0+n, x_15^0'=-1/2*n^2-y_13^0*n+x_15^0+1/2*n, (-1+x_15^0 >= 0 /\ -3/2-(-1+n)*y_13^0-1/2*(-1+n)^2+x_15^0+1/2*n >= 0 /\ n >= 0), cost: 2*n Sub-proof via acceration calculus written to file:///tmp/tmpnam_CLpMJo.txt Applied deletion Removed the following rules: 11 Accelerated simple loops Start location: l4 12: l2 -> l2 : y_13^0'=y_13^0+n, x_15^0'=-1/2*n^2-y_13^0*n+x_15^0+1/2*n, (-1+x_15^0 >= 0 /\ -3/2-(-1+n)*y_13^0-1/2*(-1+n)^2+x_15^0+1/2*n >= 0 /\ n >= 0), cost: 2*n 10: l4 -> l2 : -1+y_13^0 >= 0, cost: 2 Applied chaining First rule: l4 -> l2 : -1+y_13^0 >= 0, cost: 2 Second rule: l2 -> l2 : y_13^0'=y_13^0+n, x_15^0'=-1/2*n^2-y_13^0*n+x_15^0+1/2*n, (-1+x_15^0 >= 0 /\ -3/2-(-1+n)*y_13^0-1/2*(-1+n)^2+x_15^0+1/2*n >= 0 /\ n >= 0), cost: 2*n New rule: l4 -> l2 : y_13^0'=y_13^0+n, x_15^0'=-1/2*n^2-y_13^0*n+x_15^0+1/2*n, (-1+y_13^0 >= 0 /\ -1+x_15^0 >= 0 /\ -3/2-(-1+n)*y_13^0-1/2*(-1+n)^2+x_15^0+1/2*n >= 0 /\ n >= 0), cost: 2+2*n Applied deletion Removed the following rules: 12 Chained accelerated rules with incoming rules Start location: l4 10: l4 -> l2 : -1+y_13^0 >= 0, cost: 2 13: l4 -> l2 : y_13^0'=y_13^0+n, x_15^0'=-1/2*n^2-y_13^0*n+x_15^0+1/2*n, (-1+y_13^0 >= 0 /\ -1+x_15^0 >= 0 /\ -3/2-(-1+n)*y_13^0-1/2*(-1+n)^2+x_15^0+1/2*n >= 0 /\ n >= 0), cost: 2+2*n Removed unreachable locations and irrelevant leafs Start location: l4 Computing asymptotic complexity Proved the following lower bound Complexity: Unknown Cpx degree: ? Solved cost: 0 Rule cost: 0