3.26/1.63 YES 3.26/1.64 proof of /export/starexec/sandbox/benchmark/theBenchmark.xml 3.26/1.64 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 3.26/1.64 3.26/1.64 3.26/1.64 Quasi decreasingness of the given CTRS could be proven: 3.26/1.64 3.26/1.64 (0) CTRS 3.26/1.64 (1) CTRSToQTRSProof [SOUND, 0 ms] 3.26/1.64 (2) QTRS 3.26/1.64 (3) QTRSRRRProof [EQUIVALENT, 50 ms] 3.26/1.64 (4) QTRS 3.26/1.64 (5) QTRSRRRProof [EQUIVALENT, 0 ms] 3.26/1.64 (6) QTRS 3.26/1.64 (7) RisEmptyProof [EQUIVALENT, 0 ms] 3.26/1.64 (8) YES 3.26/1.64 3.26/1.64 3.26/1.64 ---------------------------------------- 3.26/1.64 3.26/1.64 (0) 3.26/1.64 Obligation: 3.26/1.64 Conditional term rewrite system: 3.26/1.64 The TRS R consists of the following rules: 3.26/1.64 3.26/1.64 g(s(x)) -> g(x) 3.26/1.64 3.26/1.64 The conditional TRS C consists of the following conditional rules: 3.26/1.64 3.26/1.64 f(g(x)) -> x <= x -> s(0) 3.26/1.64 3.26/1.64 3.26/1.64 ---------------------------------------- 3.26/1.64 3.26/1.64 (1) CTRSToQTRSProof (SOUND) 3.26/1.64 The conditional rules have been transormed into unconditional rules according to [CTRS,AAECCNOC]. 3.26/1.64 ---------------------------------------- 3.26/1.64 3.26/1.64 (2) 3.26/1.64 Obligation: 3.26/1.64 Q restricted rewrite system: 3.26/1.64 The TRS R consists of the following rules: 3.26/1.64 3.26/1.64 f(g(x)) -> U1(x, x) 3.26/1.64 U1(s(0), x) -> x 3.26/1.64 g(s(x)) -> g(x) 3.26/1.64 3.26/1.64 Q is empty. 3.26/1.64 3.26/1.64 ---------------------------------------- 3.26/1.64 3.26/1.64 (3) QTRSRRRProof (EQUIVALENT) 3.26/1.64 Used ordering: 3.26/1.64 Polynomial interpretation [POLO]: 3.26/1.64 3.26/1.64 POL(0) = 0 3.26/1.64 POL(U1(x_1, x_2)) = 1 + x_1 + x_2 3.26/1.64 POL(f(x_1)) = 2 + 2*x_1 3.26/1.64 POL(g(x_1)) = 2 + 2*x_1 3.26/1.64 POL(s(x_1)) = x_1 3.26/1.64 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: 3.26/1.64 3.26/1.64 f(g(x)) -> U1(x, x) 3.26/1.64 U1(s(0), x) -> x 3.26/1.64 3.26/1.64 3.26/1.64 3.26/1.64 3.26/1.64 ---------------------------------------- 3.26/1.64 3.26/1.64 (4) 3.26/1.64 Obligation: 3.26/1.64 Q restricted rewrite system: 3.26/1.64 The TRS R consists of the following rules: 3.26/1.64 3.26/1.64 g(s(x)) -> g(x) 3.26/1.64 3.26/1.64 Q is empty. 3.26/1.64 3.26/1.64 ---------------------------------------- 3.26/1.64 3.26/1.64 (5) QTRSRRRProof (EQUIVALENT) 3.26/1.64 Used ordering: 3.26/1.64 Knuth-Bendix order [KBO] with precedence:s_1 > g_1 3.26/1.64 3.26/1.64 and weight map: 3.26/1.64 3.26/1.64 g_1=1 3.26/1.64 s_1=0 3.26/1.64 3.26/1.64 The variable weight is 1With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: 3.26/1.64 3.26/1.64 g(s(x)) -> g(x) 3.26/1.64 3.26/1.64 3.26/1.64 3.26/1.64 3.26/1.64 ---------------------------------------- 3.26/1.64 3.26/1.64 (6) 3.26/1.64 Obligation: 3.26/1.64 Q restricted rewrite system: 3.26/1.64 R is empty. 3.26/1.64 Q is empty. 3.26/1.64 3.26/1.64 ---------------------------------------- 3.26/1.64 3.26/1.64 (7) RisEmptyProof (EQUIVALENT) 3.26/1.64 The TRS R is empty. Hence, termination is trivially proven. 3.26/1.64 ---------------------------------------- 3.26/1.64 3.26/1.64 (8) 3.26/1.64 YES 3.26/1.65 EOF