21.10/6.06 NO 21.10/6.06 proof of /export/starexec/sandbox2/benchmark/theBenchmark.xml 21.10/6.06 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 21.10/6.06 21.10/6.06 21.10/6.06 Outermost Termination of the given OTRS could be disproven: 21.10/6.06 21.10/6.06 (0) OTRS 21.10/6.06 (1) OutermostNonTerminationProof [COMPLETE, 2732 ms] 21.10/6.06 (2) NO 21.10/6.06 21.10/6.06 21.10/6.06 ---------------------------------------- 21.10/6.06 21.10/6.06 (0) 21.10/6.06 Obligation: 21.10/6.06 Term rewrite system R: 21.10/6.06 The TRS R consists of the following rules: 21.10/6.06 21.10/6.06 zeros -> cons(0, n__zeros) 21.10/6.06 U11(tt, L) -> U12(tt, activate(L)) 21.10/6.06 U12(tt, L) -> s(length(activate(L))) 21.10/6.06 U21(tt, IL, M, N) -> U22(tt, activate(IL), activate(M), activate(N)) 21.10/6.06 U22(tt, IL, M, N) -> U23(tt, activate(IL), activate(M), activate(N)) 21.10/6.06 U23(tt, IL, M, N) -> cons(activate(N), n__take(activate(M), activate(IL))) 21.10/6.06 length(nil) -> 0 21.10/6.06 length(cons(N, L)) -> U11(tt, activate(L)) 21.10/6.06 take(0, IL) -> nil 21.10/6.06 take(s(M), cons(N, IL)) -> U21(tt, activate(IL), M, N) 21.10/6.06 zeros -> n__zeros 21.10/6.06 take(X1, X2) -> n__take(X1, X2) 21.10/6.06 activate(n__zeros) -> zeros 21.10/6.06 activate(n__take(X1, X2)) -> take(X1, X2) 21.10/6.06 activate(X) -> X 21.10/6.06 21.10/6.06 21.10/6.06 21.10/6.06 Outermost Strategy. 21.10/6.06 21.10/6.06 ---------------------------------------- 21.10/6.06 21.10/6.06 (1) OutermostNonTerminationProof (COMPLETE) 21.10/6.06 Term rewrite system R: 21.10/6.06 The TRS R consists of the following rules: 21.10/6.06 21.10/6.06 zeros -> cons(0, n__zeros) 21.10/6.06 U11(tt, L) -> U12(tt, activate(L)) 21.10/6.06 U12(tt, L) -> s(length(activate(L))) 21.10/6.06 U21(tt, IL, M, N) -> U22(tt, activate(IL), activate(M), activate(N)) 21.10/6.06 U22(tt, IL, M, N) -> U23(tt, activate(IL), activate(M), activate(N)) 21.10/6.06 U23(tt, IL, M, N) -> cons(activate(N), n__take(activate(M), activate(IL))) 21.10/6.06 length(nil) -> 0 21.10/6.06 length(cons(N, L)) -> U11(tt, activate(L)) 21.10/6.06 take(0, IL) -> nil 21.10/6.06 take(s(M), cons(N, IL)) -> U21(tt, activate(IL), M, N) 21.10/6.06 zeros -> n__zeros 21.10/6.06 take(X1, X2) -> n__take(X1, X2) 21.10/6.06 activate(n__zeros) -> zeros 21.10/6.06 activate(n__take(X1, X2)) -> take(X1, X2) 21.10/6.06 activate(X) -> X 21.10/6.06 21.10/6.06 21.10/6.06 21.10/6.06 Outermost Strategy. 21.10/6.06 21.10/6.06 ---------- Loop: ---------- 21.10/6.06 21.10/6.06 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))] 21.10/6.06 21.10/6.06 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))] 21.10/6.06 21.10/6.06 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)] 21.10/6.06 21.10/6.06 s(length(activate(n__zeros))) -> s(length(zeros)) with rule activate(n__zeros) -> zeros at position [0,0] and matcher [ ] 21.10/6.06 21.10/6.06 s(length(zeros)) -> s(length(cons(0, n__zeros))) with rule zeros -> cons(0, n__zeros) at position [0,0] and matcher [ ] 21.10/6.06 21.10/6.06 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] 21.10/6.06 21.10/6.06 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)] 21.10/6.06 21.10/6.06 Now an instance of the first term with Matcher [ ] occurs in the last term at position [0]. 21.10/6.06 21.10/6.06 Context: s([]) 21.10/6.06 21.10/6.06 We used [THIEMANN_LOOPS_UNDER_STRATEGIES] to show that this Loop is an Outermost-Loop. 21.10/6.06 ---------------------------------------- 21.10/6.06 21.10/6.06 (2) 21.10/6.06 NO 21.16/7.77 EOF