YES proof of /export/starexec/sandbox2/benchmark/theBenchmark.xml # AProVE Commit ID: 794c25de1cacf0d048858bcd21c9a779e1221865 marcel 20200619 unpublished dirty Termination w.r.t. Q of the given QTRS could be proven: (0) QTRS (1) QTRSRRRProof [EQUIVALENT, 39 ms] (2) QTRS (3) DependencyPairsProof [EQUIVALENT, 10 ms] (4) QDP (5) DependencyGraphProof [EQUIVALENT, 0 ms] (6) QDP (7) UsableRulesProof [EQUIVALENT, 0 ms] (8) QDP (9) QDPSizeChangeProof [EQUIVALENT, 0 ms] (10) YES ---------------------------------------- (0) Obligation: Q restricted rewrite system: The TRS R consists of the following rules: 1(0(x1)) -> 0(0(0(1(x1)))) 0(1(x1)) -> 1(x1) 1(1(x1)) -> 0(0(0(0(x1)))) 0(0(x1)) -> 0(x1) Q is empty. ---------------------------------------- (1) QTRSRRRProof (EQUIVALENT) Used ordering: Polynomial interpretation [POLO]: POL(0(x_1)) = x_1 POL(1(x_1)) = 1 + x_1 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: 1(1(x1)) -> 0(0(0(0(x1)))) ---------------------------------------- (2) Obligation: Q restricted rewrite system: The TRS R consists of the following rules: 1(0(x1)) -> 0(0(0(1(x1)))) 0(1(x1)) -> 1(x1) 0(0(x1)) -> 0(x1) Q is empty. ---------------------------------------- (3) DependencyPairsProof (EQUIVALENT) Using Dependency Pairs [AG00,LPAR04] we result in the following initial DP problem. ---------------------------------------- (4) Obligation: Q DP problem: The TRS P consists of the following rules: 1^1(0(x1)) -> 0^1(0(0(1(x1)))) 1^1(0(x1)) -> 0^1(0(1(x1))) 1^1(0(x1)) -> 0^1(1(x1)) 1^1(0(x1)) -> 1^1(x1) The TRS R consists of the following rules: 1(0(x1)) -> 0(0(0(1(x1)))) 0(1(x1)) -> 1(x1) 0(0(x1)) -> 0(x1) Q is empty. We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (5) DependencyGraphProof (EQUIVALENT) The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 1 SCC with 3 less nodes. ---------------------------------------- (6) Obligation: Q DP problem: The TRS P consists of the following rules: 1^1(0(x1)) -> 1^1(x1) The TRS R consists of the following rules: 1(0(x1)) -> 0(0(0(1(x1)))) 0(1(x1)) -> 1(x1) 0(0(x1)) -> 0(x1) Q is empty. We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (7) UsableRulesProof (EQUIVALENT) We can use the usable rules and reduction pair processor [LPAR04] with the Ce-compatible extension of the polynomial order that maps every function symbol to the sum of its arguments. Then, we can delete all non-usable rules [FROCOS05] from R. ---------------------------------------- (8) Obligation: Q DP problem: The TRS P consists of the following rules: 1^1(0(x1)) -> 1^1(x1) R is empty. Q is empty. We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (9) QDPSizeChangeProof (EQUIVALENT) By using the subterm criterion [SUBTERM_CRITERION] together with the size-change analysis [AAECC05] we have proven that there are no infinite chains for this DP problem. From the DPs we obtained the following set of size-change graphs: *1^1(0(x1)) -> 1^1(x1) The graph contains the following edges 1 > 1 ---------------------------------------- (10) YES