2.59/1.84 NO 2.59/1.85 proof of /export/starexec/sandbox/benchmark/theBenchmark.xml 2.59/1.85 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 2.59/1.85 2.59/1.85 2.59/1.85 Outermost Termination of the given OTRS could be disproven: 2.59/1.85 2.59/1.85 (0) OTRS 2.59/1.85 (1) OutermostNonTerminationProof [COMPLETE, 0 ms] 2.59/1.85 (2) NO 2.59/1.85 2.59/1.85 2.59/1.85 ---------------------------------------- 2.59/1.85 2.59/1.85 (0) 2.59/1.85 Obligation: 2.59/1.85 Term rewrite system R: 2.59/1.85 The TRS R consists of the following rules: 2.59/1.85 2.59/1.85 U62(tt) -> s(length(L)) 2.59/1.85 zeros -> cons(0) 2.59/1.85 U11(tt) -> tt 2.59/1.85 U21(tt) -> tt 2.59/1.85 U31(tt) -> tt 2.59/1.85 U41(tt) -> U42(isNatIList) 2.59/1.85 U42(tt) -> tt 2.59/1.85 U51(tt) -> U52(isNatList) 2.59/1.85 U52(tt) -> tt 2.59/1.85 U61(tt) -> U62(isNat) 2.59/1.85 isNat -> tt 2.59/1.85 isNat -> U11(isNatList) 2.59/1.85 isNat -> U21(isNat) 2.59/1.85 isNatIList -> U31(isNatList) 2.59/1.85 isNatIList -> tt 2.59/1.85 isNatIList -> U41(isNat) 2.59/1.85 isNatList -> tt 2.59/1.85 isNatList -> U51(isNat) 2.59/1.85 length(nil) -> 0 2.59/1.85 length(cons(N)) -> U61(isNatList) 2.59/1.85 2.59/1.85 2.59/1.85 2.59/1.85 Outermost Strategy. 2.59/1.85 2.59/1.85 ---------------------------------------- 2.59/1.85 2.59/1.85 (1) OutermostNonTerminationProof (COMPLETE) 2.59/1.85 Term rewrite system R: 2.59/1.85 The TRS R consists of the following rules: 2.59/1.85 2.59/1.85 U62(tt) -> s(length(L)) 2.59/1.85 zeros -> cons(0) 2.59/1.85 U11(tt) -> tt 2.59/1.85 U21(tt) -> tt 2.59/1.85 U31(tt) -> tt 2.59/1.85 U41(tt) -> U42(isNatIList) 2.59/1.85 U42(tt) -> tt 2.59/1.85 U51(tt) -> U52(isNatList) 2.59/1.85 U52(tt) -> tt 2.59/1.85 U61(tt) -> U62(isNat) 2.59/1.85 isNat -> tt 2.59/1.85 isNat -> U11(isNatList) 2.59/1.85 isNat -> U21(isNat) 2.59/1.85 isNatIList -> U31(isNatList) 2.59/1.85 isNatIList -> tt 2.59/1.85 isNatIList -> U41(isNat) 2.59/1.85 isNatList -> tt 2.59/1.85 isNatList -> U51(isNat) 2.59/1.85 length(nil) -> 0 2.59/1.85 length(cons(N)) -> U61(isNatList) 2.59/1.85 2.59/1.85 2.59/1.85 2.59/1.85 Outermost Strategy. 2.59/1.85 2.59/1.85 ---------- Loop: ---------- 2.59/1.85 2.59/1.85 U62(tt) -> s(length(U62(tt))) with rule U62(tt) -> s(length(L)) at position [] and matcher [L / U62(tt)] 2.59/1.85 2.59/1.85 Now an instance of the first term with Matcher [ ] occurs in the last term at position [0,0]. 2.59/1.85 2.59/1.85 Context: s(length([])) 2.59/1.85 2.59/1.85 We used [THIEMANN_LOOPS_UNDER_STRATEGIES] to show that this Loop is an Outermost-Loop. 2.59/1.85 ---------------------------------------- 2.59/1.85 2.59/1.85 (2) 2.59/1.85 NO 2.66/1.88 EOF