25.22/7.12 NO 25.22/7.13 proof of /export/starexec/sandbox2/benchmark/theBenchmark.xml 25.22/7.13 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 25.22/7.13 25.22/7.13 25.22/7.13 Outermost Termination of the given OTRS could be disproven: 25.22/7.13 25.22/7.13 (0) OTRS 25.22/7.13 (1) OutermostNonTerminationProof [COMPLETE, 3959 ms] 25.22/7.13 (2) NO 25.22/7.13 25.22/7.13 25.22/7.13 ---------------------------------------- 25.22/7.13 25.22/7.13 (0) 25.22/7.13 Obligation: 25.22/7.13 Term rewrite system R: 25.22/7.13 The TRS R consists of the following rules: 25.22/7.13 25.22/7.13 zeros -> cons(0, n__zeros) 25.22/7.13 U11(tt, L) -> U12(tt, activate(L)) 25.22/7.13 U12(tt, L) -> s(length(activate(L))) 25.22/7.13 U21(tt, IL, M, N) -> U22(tt, activate(IL), activate(M), activate(N)) 25.22/7.13 U22(tt, IL, M, N) -> U23(tt, activate(IL), activate(M), activate(N)) 25.22/7.13 U23(tt, IL, M, N) -> cons(activate(N), n__take(activate(M), activate(IL))) 25.22/7.13 length(nil) -> 0 25.22/7.13 length(cons(N, L)) -> U11(tt, activate(L)) 25.22/7.13 take(0, IL) -> nil 25.22/7.13 take(s(M), cons(N, IL)) -> U21(tt, activate(IL), M, N) 25.22/7.13 zeros -> n__zeros 25.22/7.13 take(X1, X2) -> n__take(X1, X2) 25.22/7.13 activate(n__zeros) -> zeros 25.22/7.13 activate(n__take(X1, X2)) -> take(activate(X1), activate(X2)) 25.22/7.13 activate(X) -> X 25.22/7.13 25.22/7.13 25.22/7.13 25.22/7.13 Outermost Strategy. 25.22/7.13 25.22/7.13 ---------------------------------------- 25.22/7.13 25.22/7.13 (1) OutermostNonTerminationProof (COMPLETE) 25.22/7.13 Term rewrite system R: 25.22/7.13 The TRS R consists of the following rules: 25.22/7.13 25.22/7.13 zeros -> cons(0, n__zeros) 25.22/7.13 U11(tt, L) -> U12(tt, activate(L)) 25.22/7.13 U12(tt, L) -> s(length(activate(L))) 25.22/7.13 U21(tt, IL, M, N) -> U22(tt, activate(IL), activate(M), activate(N)) 25.22/7.13 U22(tt, IL, M, N) -> U23(tt, activate(IL), activate(M), activate(N)) 25.22/7.13 U23(tt, IL, M, N) -> cons(activate(N), n__take(activate(M), activate(IL))) 25.22/7.13 length(nil) -> 0 25.22/7.13 length(cons(N, L)) -> U11(tt, activate(L)) 25.22/7.13 take(0, IL) -> nil 25.22/7.13 take(s(M), cons(N, IL)) -> U21(tt, activate(IL), M, N) 25.22/7.13 zeros -> n__zeros 25.22/7.13 take(X1, X2) -> n__take(X1, X2) 25.22/7.13 activate(n__zeros) -> zeros 25.22/7.13 activate(n__take(X1, X2)) -> take(activate(X1), activate(X2)) 25.22/7.13 activate(X) -> X 25.22/7.13 25.22/7.13 25.22/7.13 25.22/7.13 Outermost Strategy. 25.22/7.13 25.22/7.13 ---------- Loop: ---------- 25.22/7.13 25.22/7.13 U12(tt, activate(activate(n__zeros))) -> s(length(activate(activate(activate(n__zeros))))) with rule U12(tt, L) -> s(length(activate(L))) at position [] and matcher [L / activate(activate(n__zeros))] 25.22/7.13 25.22/7.13 s(length(activate(activate(activate(n__zeros))))) -> s(length(activate(activate(n__zeros)))) with rule activate(X) -> X at position [0,0] and matcher [X / activate(activate(n__zeros))] 25.22/7.13 25.22/7.13 s(length(activate(activate(n__zeros)))) -> s(length(activate(n__zeros))) with rule activate(X) -> X at position [0,0] and matcher [X / activate(n__zeros)] 25.22/7.13 25.22/7.13 s(length(activate(n__zeros))) -> s(length(zeros)) with rule activate(n__zeros) -> zeros at position [0,0] and matcher [ ] 25.22/7.13 25.22/7.13 s(length(zeros)) -> s(length(cons(0, n__zeros))) with rule zeros -> cons(0, n__zeros) at position [0,0] and matcher [ ] 25.22/7.13 25.22/7.13 s(length(cons(0, n__zeros))) -> s(U11(tt, activate(n__zeros))) with rule length(cons(N, L)) -> U11(tt, activate(L)) at position [0] and matcher [N / 0, L / n__zeros] 25.22/7.13 25.22/7.13 s(U11(tt, activate(n__zeros))) -> s(U12(tt, activate(activate(n__zeros)))) with rule U11(tt, L) -> U12(tt, activate(L)) at position [0] and matcher [L / activate(n__zeros)] 25.22/7.13 25.22/7.13 Now an instance of the first term with Matcher [ ] occurs in the last term at position [0]. 25.22/7.13 25.22/7.13 Context: s([]) 25.22/7.13 25.22/7.13 We used [THIEMANN_LOOPS_UNDER_STRATEGIES] to show that this Loop is an Outermost-Loop. 25.22/7.13 ---------------------------------------- 25.22/7.13 25.22/7.13 (2) 25.22/7.13 NO 25.50/7.93 EOF