NO Initial ITS Start location: l4 0: l0 -> l1 : p^0'=p^post0, p^0-p^post0 == 0, cost: 1 1: l1 -> l0 : p^0'=p^post1, p^0-p^post1 == 0, cost: 1 2: l2 -> l0 : p^0'=p^post2, -1+p^post2 == 0, cost: 1 3: l2 -> l0 : p^0'=p^post3, p^post3 == 0, cost: 1 4: l3 -> l2 : p^0'=p^post4, (p^10 == 0 /\ -1+p^post4 == 0), cost: 1 5: l4 -> l3 : p^0'=p^post5, p^0-p^post5 == 0, cost: 1 Applied preprocessing Original rule: l0 -> l1 : p^0'=p^post0, p^0-p^post0 == 0, cost: 1 New rule: l0 -> l1 : TRUE, cost: 1 Applied preprocessing Original rule: l1 -> l0 : p^0'=p^post1, p^0-p^post1 == 0, cost: 1 New rule: l1 -> l0 : TRUE, cost: 1 Applied preprocessing Original rule: l2 -> l0 : p^0'=p^post2, -1+p^post2 == 0, cost: 1 New rule: l2 -> l0 : p^0'=1, TRUE, cost: 1 Applied preprocessing Original rule: l2 -> l0 : p^0'=p^post3, p^post3 == 0, cost: 1 New rule: l2 -> l0 : p^0'=0, TRUE, cost: 1 Applied preprocessing Original rule: l3 -> l2 : p^0'=p^post4, (p^10 == 0 /\ -1+p^post4 == 0), cost: 1 New rule: l3 -> l2 : p^0'=1, TRUE, cost: 1 Applied preprocessing Original rule: l4 -> l3 : p^0'=p^post5, p^0-p^post5 == 0, cost: 1 New rule: l4 -> l3 : TRUE, cost: 1 Simplified rules Start location: l4 6: l0 -> l1 : TRUE, cost: 1 7: l1 -> l0 : TRUE, cost: 1 8: l2 -> l0 : p^0'=1, TRUE, cost: 1 9: l2 -> l0 : p^0'=0, TRUE, cost: 1 10: l3 -> l2 : p^0'=1, TRUE, cost: 1 11: l4 -> l3 : TRUE, cost: 1 Eliminating location l3 by chaining: Applied chaining First rule: l4 -> l3 : TRUE, cost: 1 Second rule: l3 -> l2 : p^0'=1, TRUE, cost: 1 New rule: l4 -> l2 : p^0'=1, TRUE, cost: 2 Applied deletion Removed the following rules: 10 11 Eliminating location l1 by chaining: Applied chaining First rule: l0 -> l1 : TRUE, cost: 1 Second rule: l1 -> l0 : TRUE, cost: 1 New rule: l0 -> l0 : TRUE, cost: 2 Applied deletion Removed the following rules: 6 7 Eliminated locations on linear paths Start location: l4 13: l0 -> l0 : TRUE, cost: 2 8: l2 -> l0 : p^0'=1, TRUE, cost: 1 9: l2 -> l0 : p^0'=0, TRUE, cost: 1 12: l4 -> l2 : p^0'=1, TRUE, cost: 2 Applied nonterm Original rule: l0 -> l0 : TRUE, cost: 2 New rule: l0 -> [5] : TRUE, cost: NONTERM Applied acceleration Original rule: l0 -> l0 : TRUE, cost: 2 New rule: l0 -> l0 : TRUE, cost: 2*n0 Applied deletion Removed the following rules: 13 Accelerated simple loops Start location: l4 14: l0 -> [5] : TRUE, cost: NONTERM 15: l0 -> l0 : TRUE, cost: 2*n0 8: l2 -> l0 : p^0'=1, TRUE, cost: 1 9: l2 -> l0 : p^0'=0, TRUE, cost: 1 12: l4 -> l2 : p^0'=1, TRUE, cost: 2 Applied chaining First rule: l2 -> l0 : p^0'=1, TRUE, cost: 1 Second rule: l0 -> [5] : TRUE, cost: NONTERM New rule: l2 -> [5] : TRUE, cost: NONTERM Applied chaining First rule: l2 -> l0 : p^0'=0, TRUE, cost: 1 Second rule: l0 -> [5] : TRUE, cost: NONTERM New rule: l2 -> [5] : TRUE, cost: NONTERM Applied chaining First rule: l2 -> l0 : p^0'=1, TRUE, cost: 1 Second rule: l0 -> l0 : TRUE, cost: 2*n0 New rule: l2 -> l0 : p^0'=1, TRUE, cost: 1+2*n0 Applied chaining First rule: l2 -> l0 : p^0'=0, TRUE, cost: 1 Second rule: l0 -> l0 : TRUE, cost: 2*n0 New rule: l2 -> l0 : p^0'=0, TRUE, cost: 1+2*n0 Applied deletion Removed the following rules: 14 15 Chained accelerated rules with incoming rules Start location: l4 8: l2 -> l0 : p^0'=1, TRUE, cost: 1 9: l2 -> l0 : p^0'=0, TRUE, cost: 1 16: l2 -> [5] : TRUE, cost: NONTERM 17: l2 -> [5] : TRUE, cost: NONTERM 18: l2 -> l0 : p^0'=1, TRUE, cost: 1+2*n0 19: l2 -> l0 : p^0'=0, TRUE, cost: 1+2*n0 12: l4 -> l2 : p^0'=1, TRUE, cost: 2 Removed unreachable locations and irrelevant leafs Start location: l4 16: l2 -> [5] : TRUE, cost: NONTERM 17: l2 -> [5] : TRUE, cost: NONTERM 12: l4 -> l2 : p^0'=1, TRUE, cost: 2 Eliminating location l2 by chaining: Applied chaining First rule: l4 -> l2 : p^0'=1, TRUE, cost: 2 Second rule: l2 -> [5] : TRUE, cost: NONTERM New rule: l4 -> [5] : TRUE, cost: NONTERM Applied chaining First rule: l4 -> l2 : p^0'=1, TRUE, cost: 2 Second rule: l2 -> [5] : TRUE, cost: NONTERM New rule: l4 -> [5] : TRUE, cost: NONTERM Applied deletion Removed the following rules: 12 16 17 Eliminated locations on tree-shaped paths Start location: l4 20: l4 -> [5] : TRUE, cost: NONTERM 21: l4 -> [5] : TRUE, cost: NONTERM Removed duplicate rules (ignoring updates) Start location: l4 21: l4 -> [5] : TRUE, cost: NONTERM Computing asymptotic complexity Proved nontermination of rule 21 via SMT. Proved the following lower bound Complexity: Nonterm Cpx degree: Nonterm Solved cost: NONTERM Rule cost: NONTERM Rule guard: TRUE