3.44/1.69 YES 3.49/1.70 proof of /export/starexec/sandbox/benchmark/theBenchmark.xml 3.49/1.70 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 3.49/1.70 3.49/1.70 3.49/1.70 Quasi decreasingness of the given CTRS could be proven: 3.49/1.70 3.49/1.70 (0) CTRS 3.49/1.70 (1) CTRSToQTRSProof [SOUND, 0 ms] 3.49/1.70 (2) QTRS 3.49/1.70 (3) QTRSRRRProof [EQUIVALENT, 59 ms] 3.49/1.70 (4) QTRS 3.49/1.70 (5) RisEmptyProof [EQUIVALENT, 0 ms] 3.49/1.70 (6) YES 3.49/1.70 3.49/1.70 3.49/1.70 ---------------------------------------- 3.49/1.70 3.49/1.70 (0) 3.49/1.70 Obligation: 3.49/1.70 Conditional term rewrite system: 3.49/1.70 The TRS R consists of the following rules: 3.49/1.70 3.49/1.70 s(a) -> t(b) 3.49/1.70 a -> b 3.49/1.70 3.49/1.70 The conditional TRS C consists of the following conditional rules: 3.49/1.70 3.49/1.70 f(x) -> x <= s(x) -> t(x) 3.49/1.70 3.49/1.70 3.49/1.70 ---------------------------------------- 3.49/1.70 3.49/1.70 (1) CTRSToQTRSProof (SOUND) 3.49/1.70 The conditional rules have been transormed into unconditional rules according to [CTRS,AAECCNOC]. 3.49/1.70 ---------------------------------------- 3.49/1.70 3.49/1.70 (2) 3.49/1.70 Obligation: 3.49/1.70 Q restricted rewrite system: 3.49/1.70 The TRS R consists of the following rules: 3.49/1.70 3.49/1.70 f(x) -> U1(s(x), x) 3.49/1.70 U1(t(x), x) -> x 3.49/1.70 s(a) -> t(b) 3.49/1.70 a -> b 3.49/1.70 3.49/1.70 Q is empty. 3.49/1.70 3.49/1.70 ---------------------------------------- 3.49/1.70 3.49/1.70 (3) QTRSRRRProof (EQUIVALENT) 3.49/1.70 Used ordering: 3.49/1.70 Quasi precedence: 3.49/1.70 f_1 > [U1_2, s_1, t_1] 3.49/1.70 a > b > [U1_2, s_1, t_1] 3.49/1.70 3.49/1.70 3.49/1.70 Status: 3.49/1.70 f_1: multiset status 3.49/1.70 U1_2: multiset status 3.49/1.70 s_1: multiset status 3.49/1.70 t_1: multiset status 3.49/1.70 a: multiset status 3.49/1.70 b: multiset status 3.49/1.70 3.49/1.70 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: 3.49/1.70 3.49/1.70 f(x) -> U1(s(x), x) 3.49/1.70 U1(t(x), x) -> x 3.49/1.70 s(a) -> t(b) 3.49/1.70 a -> b 3.49/1.70 3.49/1.70 3.49/1.70 3.49/1.70 3.49/1.70 ---------------------------------------- 3.49/1.70 3.49/1.70 (4) 3.49/1.70 Obligation: 3.49/1.70 Q restricted rewrite system: 3.49/1.70 R is empty. 3.49/1.70 Q is empty. 3.49/1.70 3.49/1.70 ---------------------------------------- 3.49/1.70 3.49/1.70 (5) RisEmptyProof (EQUIVALENT) 3.49/1.70 The TRS R is empty. Hence, termination is trivially proven. 3.49/1.70 ---------------------------------------- 3.49/1.70 3.49/1.70 (6) 3.49/1.70 YES 3.49/1.71 EOF