2.33/1.29 NO 2.33/1.30 proof of /export/starexec/sandbox/benchmark/theBenchmark.xml 2.33/1.30 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 2.33/1.30 2.33/1.30 2.33/1.30 Outermost Termination of the given OTRS could be disproven: 2.33/1.30 2.33/1.30 (0) OTRS 2.33/1.30 (1) OutermostNonTerminationProof [COMPLETE, 0 ms] 2.33/1.30 (2) NO 2.33/1.30 2.33/1.30 2.33/1.30 ---------------------------------------- 2.33/1.30 2.33/1.30 (0) 2.33/1.30 Obligation: 2.33/1.30 Term rewrite system R: 2.33/1.30 The TRS R consists of the following rules: 2.33/1.30 2.33/1.30 terms(N) -> cons(recip(sqr(N)), terms(s(N))) 2.33/1.30 sqr(0) -> 0 2.33/1.30 sqr(s(X)) -> s(add(sqr(X), dbl(X))) 2.33/1.30 dbl(0) -> 0 2.33/1.30 dbl(s(X)) -> s(s(dbl(X))) 2.33/1.30 add(0, X) -> X 2.33/1.30 add(s(X), Y) -> s(add(X, Y)) 2.33/1.30 first(0, X) -> nil 2.33/1.30 first(s(X), cons(Y, Z)) -> cons(Y, first(X, Z)) 2.33/1.30 2.33/1.30 2.33/1.30 2.33/1.30 Outermost Strategy. 2.33/1.30 2.33/1.30 ---------------------------------------- 2.33/1.30 2.33/1.30 (1) OutermostNonTerminationProof (COMPLETE) 2.33/1.30 Term rewrite system R: 2.33/1.30 The TRS R consists of the following rules: 2.33/1.30 2.33/1.30 terms(N) -> cons(recip(sqr(N)), terms(s(N))) 2.33/1.30 sqr(0) -> 0 2.33/1.30 sqr(s(X)) -> s(add(sqr(X), dbl(X))) 2.33/1.30 dbl(0) -> 0 2.33/1.30 dbl(s(X)) -> s(s(dbl(X))) 2.33/1.30 add(0, X) -> X 2.33/1.30 add(s(X), Y) -> s(add(X, Y)) 2.33/1.30 first(0, X) -> nil 2.33/1.30 first(s(X), cons(Y, Z)) -> cons(Y, first(X, Z)) 2.33/1.30 2.33/1.30 2.33/1.30 2.33/1.30 Outermost Strategy. 2.33/1.30 2.33/1.30 ---------- Loop: ---------- 2.33/1.30 2.33/1.30 terms(N) -> cons(recip(sqr(N)), terms(s(N))) with rule terms(N') -> cons(recip(sqr(N')), terms(s(N'))) at position [] and matcher [N' / N] 2.33/1.30 2.33/1.30 Now an instance of the first term with Matcher [N / s(N)] occurs in the last term at position [1]. 2.33/1.30 2.33/1.30 Context: cons(recip(sqr(N)), []) 2.33/1.30 2.33/1.30 We used [THIEMANN_LOOPS_UNDER_STRATEGIES] to show that this Loop is an Outermost-Loop. 2.33/1.30 ---------------------------------------- 2.33/1.30 2.33/1.30 (2) 2.33/1.30 NO 2.66/1.35 EOF