NO Initial ITS Start location: l4 0: l0 -> l1 : x_5^0'=x_5^post0, Result_4^0'=Result_4^post0, y_6^0'=y_6^post0, (y_6^0-y_6^post0 == 0 /\ Result_4^0-Result_4^post0 == 0 /\ x_5^0-x_5^post0 == 0), cost: 1 1: l1 -> l2 : x_5^0'=x_5^post1, Result_4^0'=Result_4^post1, y_6^0'=y_6^post1, (0 == 0 /\ y_6^0-y_6^post1 == 0 /\ -x_5^0+x_5^post1-y_6^0 == 0 /\ 1+x_5^post1 <= 0), cost: 1 2: l1 -> l3 : x_5^0'=x_5^post2, Result_4^0'=Result_4^post2, y_6^0'=y_6^post2, (y_6^0-y_6^post2 == 0 /\ -x_5^0+x_5^post2-y_6^0 == 0 /\ -x_5^post2 <= 0 /\ -Result_4^post2+Result_4^0 == 0), cost: 1 3: l3 -> l1 : x_5^0'=x_5^post3, Result_4^0'=Result_4^post3, y_6^0'=y_6^post3, (-Result_4^post3+Result_4^0 == 0 /\ -x_5^post3+x_5^0 == 0 /\ -y_6^post3+y_6^0 == 0), cost: 1 4: l4 -> l0 : x_5^0'=x_5^post4, Result_4^0'=Result_4^post4, y_6^0'=y_6^post4, (-Result_4^post4+Result_4^0 == 0 /\ -y_6^post4+y_6^0 == 0 /\ -x_5^post4+x_5^0 == 0), cost: 1 Removed unreachable rules and leafs Start location: l4 0: l0 -> l1 : x_5^0'=x_5^post0, Result_4^0'=Result_4^post0, y_6^0'=y_6^post0, (y_6^0-y_6^post0 == 0 /\ Result_4^0-Result_4^post0 == 0 /\ x_5^0-x_5^post0 == 0), cost: 1 2: l1 -> l3 : x_5^0'=x_5^post2, Result_4^0'=Result_4^post2, y_6^0'=y_6^post2, (y_6^0-y_6^post2 == 0 /\ -x_5^0+x_5^post2-y_6^0 == 0 /\ -x_5^post2 <= 0 /\ -Result_4^post2+Result_4^0 == 0), cost: 1 3: l3 -> l1 : x_5^0'=x_5^post3, Result_4^0'=Result_4^post3, y_6^0'=y_6^post3, (-Result_4^post3+Result_4^0 == 0 /\ -x_5^post3+x_5^0 == 0 /\ -y_6^post3+y_6^0 == 0), cost: 1 4: l4 -> l0 : x_5^0'=x_5^post4, Result_4^0'=Result_4^post4, y_6^0'=y_6^post4, (-Result_4^post4+Result_4^0 == 0 /\ -y_6^post4+y_6^0 == 0 /\ -x_5^post4+x_5^0 == 0), cost: 1 Applied preprocessing Original rule: l0 -> l1 : x_5^0'=x_5^post0, Result_4^0'=Result_4^post0, y_6^0'=y_6^post0, (y_6^0-y_6^post0 == 0 /\ Result_4^0-Result_4^post0 == 0 /\ x_5^0-x_5^post0 == 0), cost: 1 New rule: l0 -> l1 : TRUE, cost: 1 Applied preprocessing Original rule: l1 -> l3 : x_5^0'=x_5^post2, Result_4^0'=Result_4^post2, y_6^0'=y_6^post2, (y_6^0-y_6^post2 == 0 /\ -x_5^0+x_5^post2-y_6^0 == 0 /\ -x_5^post2 <= 0 /\ -Result_4^post2+Result_4^0 == 0), cost: 1 New rule: l1 -> l3 : x_5^0'=x_5^0+y_6^0, -x_5^0-y_6^0 <= 0, cost: 1 Applied preprocessing Original rule: l3 -> l1 : x_5^0'=x_5^post3, Result_4^0'=Result_4^post3, y_6^0'=y_6^post3, (-Result_4^post3+Result_4^0 == 0 /\ -x_5^post3+x_5^0 == 0 /\ -y_6^post3+y_6^0 == 0), cost: 1 New rule: l3 -> l1 : TRUE, cost: 1 Applied preprocessing Original rule: l4 -> l0 : x_5^0'=x_5^post4, Result_4^0'=Result_4^post4, y_6^0'=y_6^post4, (-Result_4^post4+Result_4^0 == 0 /\ -y_6^post4+y_6^0 == 0 /\ -x_5^post4+x_5^0 == 0), cost: 1 New rule: l4 -> l0 : TRUE, cost: 1 Simplified rules Start location: l4 5: l0 -> l1 : TRUE, cost: 1 6: l1 -> l3 : x_5^0'=x_5^0+y_6^0, -x_5^0-y_6^0 <= 0, cost: 1 7: l3 -> l1 : TRUE, cost: 1 8: l4 -> l0 : TRUE, cost: 1 Eliminating location l0 by chaining: Applied chaining First rule: l4 -> l0 : TRUE, cost: 1 Second rule: l0 -> l1 : TRUE, cost: 1 New rule: l4 -> l1 : TRUE, cost: 2 Applied deletion Removed the following rules: 5 8 Eliminating location l3 by chaining: Applied chaining First rule: l1 -> l3 : x_5^0'=x_5^0+y_6^0, -x_5^0-y_6^0 <= 0, cost: 1 Second rule: l3 -> l1 : TRUE, cost: 1 New rule: l1 -> l1 : x_5^0'=x_5^0+y_6^0, -x_5^0-y_6^0 <= 0, cost: 2 Applied deletion Removed the following rules: 6 7 Eliminated locations on linear paths Start location: l4 10: l1 -> l1 : x_5^0'=x_5^0+y_6^0, -x_5^0-y_6^0 <= 0, cost: 2 9: l4 -> l1 : TRUE, cost: 2 Applied acceleration Original rule: l1 -> l1 : x_5^0'=x_5^0+y_6^0, -x_5^0-y_6^0 <= 0, cost: 2 New rule: l1 -> l1 : x_5^0'=x_5^0+n*y_6^0, (n >= 0 /\ x_5^0+y_6^0+y_6^0*(-1+n) >= 0 /\ x_5^0+y_6^0 >= 0), cost: 2*n Sub-proof via acceration calculus written to file:///tmp/tmpnam_IjOPcj.txt Applied nonterm Original rule: l1 -> l1 : x_5^0'=x_5^0+y_6^0, -x_5^0-y_6^0 <= 0, cost: 2 New rule: l1 -> [5] : (-y_6^0 <= 0 /\ x_5^0+y_6^0 >= 0), cost: NONTERM Sub-proof via acceration calculus written to file:///tmp/tmpnam_pkLMJp.txt Applied simplification Original rule: l1 -> [5] : (-y_6^0 <= 0 /\ x_5^0+y_6^0 >= 0), cost: NONTERM New rule: l1 -> [5] : (x_5^0+y_6^0 >= 0 /\ y_6^0 >= 0), cost: NONTERM Applied deletion Removed the following rules: 10 Accelerated simple loops Start location: l4 11: l1 -> l1 : x_5^0'=x_5^0+n*y_6^0, (n >= 0 /\ x_5^0+y_6^0+y_6^0*(-1+n) >= 0 /\ x_5^0+y_6^0 >= 0), cost: 2*n 13: l1 -> [5] : (x_5^0+y_6^0 >= 0 /\ y_6^0 >= 0), cost: NONTERM 9: l4 -> l1 : TRUE, cost: 2 Applied chaining First rule: l4 -> l1 : TRUE, cost: 2 Second rule: l1 -> l1 : x_5^0'=x_5^0+n*y_6^0, (n >= 0 /\ x_5^0+y_6^0+y_6^0*(-1+n) >= 0 /\ x_5^0+y_6^0 >= 0), cost: 2*n New rule: l4 -> l1 : x_5^0'=x_5^0+n*y_6^0, (n >= 0 /\ x_5^0+y_6^0+y_6^0*(-1+n) >= 0 /\ x_5^0+y_6^0 >= 0), cost: 2+2*n Applied chaining First rule: l4 -> l1 : TRUE, cost: 2 Second rule: l1 -> [5] : (x_5^0+y_6^0 >= 0 /\ y_6^0 >= 0), cost: NONTERM New rule: l4 -> [5] : (x_5^0+y_6^0 >= 0 /\ y_6^0 >= 0), cost: NONTERM Applied deletion Removed the following rules: 11 13 Chained accelerated rules with incoming rules Start location: l4 9: l4 -> l1 : TRUE, cost: 2 14: l4 -> l1 : x_5^0'=x_5^0+n*y_6^0, (n >= 0 /\ x_5^0+y_6^0+y_6^0*(-1+n) >= 0 /\ x_5^0+y_6^0 >= 0), cost: 2+2*n 15: l4 -> [5] : (x_5^0+y_6^0 >= 0 /\ y_6^0 >= 0), cost: NONTERM Removed unreachable locations and irrelevant leafs Start location: l4 15: l4 -> [5] : (x_5^0+y_6^0 >= 0 /\ y_6^0 >= 0), cost: NONTERM Computing asymptotic complexity Proved nontermination of rule 15 via SMT. Proved the following lower bound Complexity: Nonterm Cpx degree: Nonterm Solved cost: NONTERM Rule cost: NONTERM Rule guard: (x_5^0+y_6^0 >= 0 /\ y_6^0 >= 0)