18.10/5.51 YES 18.10/5.53 proof of /export/starexec/sandbox/benchmark/theBenchmark.xml 18.10/5.53 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 18.10/5.53 18.10/5.53 18.10/5.53 Termination w.r.t. Q of the given QTRS could be proven: 18.10/5.53 18.10/5.53 (0) QTRS 18.10/5.53 (1) FlatCCProof [EQUIVALENT, 0 ms] 18.10/5.53 (2) QTRS 18.10/5.53 (3) RootLabelingProof [EQUIVALENT, 0 ms] 18.10/5.53 (4) QTRS 18.10/5.53 (5) QTRSRRRProof [EQUIVALENT, 5 ms] 18.10/5.53 (6) QTRS 18.10/5.53 (7) DependencyPairsProof [EQUIVALENT, 40 ms] 18.10/5.53 (8) QDP 18.10/5.53 (9) DependencyGraphProof [EQUIVALENT, 0 ms] 18.10/5.53 (10) QDP 18.10/5.53 (11) QDPOrderProof [EQUIVALENT, 74 ms] 18.10/5.53 (12) QDP 18.10/5.53 (13) DependencyGraphProof [EQUIVALENT, 0 ms] 18.10/5.53 (14) TRUE 18.10/5.53 18.10/5.53 18.10/5.53 ---------------------------------------- 18.10/5.53 18.10/5.53 (0) 18.10/5.53 Obligation: 18.10/5.53 Q restricted rewrite system: 18.10/5.53 The TRS R consists of the following rules: 18.10/5.53 18.10/5.53 a(b(a(a(x1)))) -> a(a(a(a(x1)))) 18.10/5.53 b(a(b(a(x1)))) -> a(a(b(b(x1)))) 18.10/5.53 b(a(a(b(x1)))) -> b(a(b(a(x1)))) 18.10/5.53 18.10/5.53 Q is empty. 18.10/5.53 18.10/5.53 ---------------------------------------- 18.10/5.53 18.10/5.53 (1) FlatCCProof (EQUIVALENT) 18.10/5.53 We used flat context closure [ROOTLAB] 18.10/5.53 As Q is empty the flat context closure was sound AND complete. 18.10/5.53 18.10/5.53 ---------------------------------------- 18.10/5.53 18.10/5.53 (2) 18.10/5.53 Obligation: 18.10/5.53 Q restricted rewrite system: 18.10/5.53 The TRS R consists of the following rules: 18.10/5.53 18.10/5.53 a(b(a(a(x1)))) -> a(a(a(a(x1)))) 18.10/5.53 b(a(a(b(x1)))) -> b(a(b(a(x1)))) 18.10/5.53 a(b(a(b(a(x1))))) -> a(a(a(b(b(x1))))) 18.10/5.53 b(b(a(b(a(x1))))) -> b(a(a(b(b(x1))))) 18.10/5.53 18.10/5.53 Q is empty. 18.10/5.53 18.10/5.53 ---------------------------------------- 18.10/5.53 18.10/5.53 (3) RootLabelingProof (EQUIVALENT) 18.10/5.53 We used plain root labeling [ROOTLAB] with the following heuristic: 18.10/5.53 LabelAll: All function symbols get labeled 18.10/5.53 18.10/5.53 As Q is empty the root labeling was sound AND complete. 18.10/5.53 18.10/5.53 ---------------------------------------- 18.10/5.53 18.10/5.53 (4) 18.10/5.53 Obligation: 18.10/5.53 Q restricted rewrite system: 18.10/5.53 The TRS R consists of the following rules: 18.10/5.53 18.10/5.53 a_{b_1}(b_{a_1}(a_{a_1}(a_{a_1}(x1)))) -> a_{a_1}(a_{a_1}(a_{a_1}(a_{a_1}(x1)))) 18.10/5.53 a_{b_1}(b_{a_1}(a_{a_1}(a_{b_1}(x1)))) -> a_{a_1}(a_{a_1}(a_{a_1}(a_{b_1}(x1)))) 18.10/5.53 b_{a_1}(a_{a_1}(a_{b_1}(b_{a_1}(x1)))) -> b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1)))) 18.10/5.53 b_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(x1)))) -> b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1)))) 18.10/5.53 a_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> a_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{a_1}(x1))))) 18.10/5.53 a_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> a_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{b_1}(x1))))) 18.10/5.53 b_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> b_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{a_1}(x1))))) 18.10/5.53 b_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> b_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{b_1}(x1))))) 18.10/5.53 18.10/5.53 Q is empty. 18.10/5.53 18.10/5.53 ---------------------------------------- 18.10/5.53 18.10/5.53 (5) QTRSRRRProof (EQUIVALENT) 18.10/5.53 Used ordering: 18.10/5.53 Polynomial interpretation [POLO]: 18.10/5.53 18.10/5.53 POL(a_{a_1}(x_1)) = x_1 18.10/5.53 POL(a_{b_1}(x_1)) = 1 + x_1 18.10/5.53 POL(b_{a_1}(x_1)) = x_1 18.10/5.53 POL(b_{b_1}(x_1)) = 1 + x_1 18.10/5.53 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: 18.10/5.53 18.10/5.53 a_{b_1}(b_{a_1}(a_{a_1}(a_{a_1}(x1)))) -> a_{a_1}(a_{a_1}(a_{a_1}(a_{a_1}(x1)))) 18.10/5.53 a_{b_1}(b_{a_1}(a_{a_1}(a_{b_1}(x1)))) -> a_{a_1}(a_{a_1}(a_{a_1}(a_{b_1}(x1)))) 18.10/5.53 18.10/5.53 18.10/5.53 18.10/5.53 18.10/5.53 ---------------------------------------- 18.10/5.53 18.10/5.53 (6) 18.10/5.53 Obligation: 18.10/5.53 Q restricted rewrite system: 18.10/5.53 The TRS R consists of the following rules: 18.10/5.53 18.10/5.53 b_{a_1}(a_{a_1}(a_{b_1}(b_{a_1}(x1)))) -> b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1)))) 18.10/5.53 b_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(x1)))) -> b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1)))) 18.10/5.53 a_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> a_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{a_1}(x1))))) 18.10/5.53 a_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> a_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{b_1}(x1))))) 18.10/5.53 b_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> b_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{a_1}(x1))))) 18.10/5.53 b_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> b_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{b_1}(x1))))) 18.10/5.53 18.10/5.53 Q is empty. 18.10/5.53 18.10/5.53 ---------------------------------------- 18.10/5.53 18.10/5.53 (7) DependencyPairsProof (EQUIVALENT) 18.10/5.53 Using Dependency Pairs [AG00,LPAR04] we result in the following initial DP problem. 18.10/5.53 ---------------------------------------- 18.10/5.53 18.10/5.53 (8) 18.10/5.53 Obligation: 18.10/5.53 Q DP problem: 18.10/5.53 The TRS P consists of the following rules: 18.10/5.53 18.10/5.53 B_{A_1}(a_{a_1}(a_{b_1}(b_{a_1}(x1)))) -> B_{A_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1)))) 18.10/5.53 B_{A_1}(a_{a_1}(a_{b_1}(b_{a_1}(x1)))) -> A_{B_1}(b_{a_1}(a_{a_1}(x1))) 18.10/5.54 B_{A_1}(a_{a_1}(a_{b_1}(b_{a_1}(x1)))) -> B_{A_1}(a_{a_1}(x1)) 18.10/5.54 B_{A_1}(a_{a_1}(a_{b_1}(b_{b_1}(x1)))) -> B_{A_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1)))) 18.10/5.54 B_{A_1}(a_{a_1}(a_{b_1}(b_{b_1}(x1)))) -> A_{B_1}(b_{a_1}(a_{b_1}(x1))) 18.10/5.54 B_{A_1}(a_{a_1}(a_{b_1}(b_{b_1}(x1)))) -> B_{A_1}(a_{b_1}(x1)) 18.10/5.54 B_{A_1}(a_{a_1}(a_{b_1}(b_{b_1}(x1)))) -> A_{B_1}(x1) 18.10/5.54 A_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> A_{B_1}(b_{b_1}(b_{a_1}(x1))) 18.10/5.54 A_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> B_{B_1}(b_{a_1}(x1)) 18.10/5.54 A_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> B_{A_1}(x1) 18.10/5.54 A_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> A_{B_1}(b_{b_1}(b_{b_1}(x1))) 18.10/5.54 A_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> B_{B_1}(b_{b_1}(x1)) 18.10/5.54 A_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> B_{B_1}(x1) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> B_{A_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{a_1}(x1))))) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> A_{B_1}(b_{b_1}(b_{a_1}(x1))) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> B_{B_1}(b_{a_1}(x1)) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> B_{A_1}(x1) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> B_{A_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{b_1}(x1))))) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> A_{B_1}(b_{b_1}(b_{b_1}(x1))) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> B_{B_1}(b_{b_1}(x1)) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> B_{B_1}(x1) 18.10/5.54 18.10/5.54 The TRS R consists of the following rules: 18.10/5.54 18.10/5.54 b_{a_1}(a_{a_1}(a_{b_1}(b_{a_1}(x1)))) -> b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1)))) 18.10/5.54 b_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(x1)))) -> b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1)))) 18.10/5.54 a_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> a_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{a_1}(x1))))) 18.10/5.54 a_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> a_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{b_1}(x1))))) 18.10/5.54 b_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> b_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{a_1}(x1))))) 18.10/5.54 b_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> b_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{b_1}(x1))))) 18.10/5.54 18.10/5.54 Q is empty. 18.10/5.54 We have to consider all minimal (P,Q,R)-chains. 18.10/5.54 ---------------------------------------- 18.10/5.54 18.10/5.54 (9) DependencyGraphProof (EQUIVALENT) 18.10/5.54 The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 1 SCC with 3 less nodes. 18.10/5.54 ---------------------------------------- 18.10/5.54 18.10/5.54 (10) 18.10/5.54 Obligation: 18.10/5.54 Q DP problem: 18.10/5.54 The TRS P consists of the following rules: 18.10/5.54 18.10/5.54 B_{A_1}(a_{a_1}(a_{b_1}(b_{a_1}(x1)))) -> A_{B_1}(b_{a_1}(a_{a_1}(x1))) 18.10/5.54 A_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> A_{B_1}(b_{b_1}(b_{a_1}(x1))) 18.10/5.54 A_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> B_{B_1}(b_{a_1}(x1)) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> B_{A_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{a_1}(x1))))) 18.10/5.54 B_{A_1}(a_{a_1}(a_{b_1}(b_{a_1}(x1)))) -> B_{A_1}(a_{a_1}(x1)) 18.10/5.54 B_{A_1}(a_{a_1}(a_{b_1}(b_{b_1}(x1)))) -> A_{B_1}(b_{a_1}(a_{b_1}(x1))) 18.10/5.54 A_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> B_{A_1}(x1) 18.10/5.54 B_{A_1}(a_{a_1}(a_{b_1}(b_{b_1}(x1)))) -> A_{B_1}(x1) 18.10/5.54 A_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> A_{B_1}(b_{b_1}(b_{b_1}(x1))) 18.10/5.54 A_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> B_{B_1}(b_{b_1}(x1)) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> A_{B_1}(b_{b_1}(b_{a_1}(x1))) 18.10/5.54 A_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> B_{B_1}(x1) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> B_{B_1}(b_{a_1}(x1)) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> B_{A_1}(x1) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> B_{A_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{b_1}(x1))))) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> A_{B_1}(b_{b_1}(b_{b_1}(x1))) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> B_{B_1}(b_{b_1}(x1)) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> B_{B_1}(x1) 18.10/5.54 18.10/5.54 The TRS R consists of the following rules: 18.10/5.54 18.10/5.54 b_{a_1}(a_{a_1}(a_{b_1}(b_{a_1}(x1)))) -> b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1)))) 18.10/5.54 b_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(x1)))) -> b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1)))) 18.10/5.54 a_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> a_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{a_1}(x1))))) 18.10/5.54 a_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> a_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{b_1}(x1))))) 18.10/5.54 b_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> b_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{a_1}(x1))))) 18.10/5.54 b_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> b_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{b_1}(x1))))) 18.10/5.54 18.10/5.54 Q is empty. 18.10/5.54 We have to consider all minimal (P,Q,R)-chains. 18.10/5.54 ---------------------------------------- 18.10/5.54 18.10/5.54 (11) QDPOrderProof (EQUIVALENT) 18.10/5.54 We use the reduction pair processor [LPAR04,JAR06]. 18.10/5.54 18.10/5.54 18.10/5.54 The following pairs can be oriented strictly and are deleted. 18.10/5.54 18.10/5.54 A_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> A_{B_1}(b_{b_1}(b_{a_1}(x1))) 18.10/5.54 A_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> B_{B_1}(b_{a_1}(x1)) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> B_{A_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{a_1}(x1))))) 18.10/5.54 B_{A_1}(a_{a_1}(a_{b_1}(b_{a_1}(x1)))) -> B_{A_1}(a_{a_1}(x1)) 18.10/5.54 A_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> B_{A_1}(x1) 18.10/5.54 B_{A_1}(a_{a_1}(a_{b_1}(b_{b_1}(x1)))) -> A_{B_1}(x1) 18.10/5.54 A_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> A_{B_1}(b_{b_1}(b_{b_1}(x1))) 18.10/5.54 A_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> B_{B_1}(b_{b_1}(x1)) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> A_{B_1}(b_{b_1}(b_{a_1}(x1))) 18.10/5.54 A_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> B_{B_1}(x1) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> B_{B_1}(b_{a_1}(x1)) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> B_{A_1}(x1) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> B_{A_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{b_1}(x1))))) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> A_{B_1}(b_{b_1}(b_{b_1}(x1))) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> B_{B_1}(b_{b_1}(x1)) 18.10/5.54 B_{B_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> B_{B_1}(x1) 18.10/5.54 The remaining pairs can at least be oriented weakly. 18.10/5.54 Used ordering: Polynomial interpretation [POLO]: 18.10/5.54 18.10/5.54 POL(A_{B_1}(x_1)) = x_1 18.10/5.54 POL(B_{A_1}(x_1)) = x_1 18.10/5.54 POL(B_{B_1}(x_1)) = x_1 18.10/5.54 POL(a_{a_1}(x_1)) = 1 + x_1 18.10/5.54 POL(a_{b_1}(x_1)) = x_1 18.10/5.54 POL(b_{a_1}(x_1)) = 1 + x_1 18.10/5.54 POL(b_{b_1}(x_1)) = x_1 18.10/5.54 18.10/5.54 The following usable rules [FROCOS05] with respect to the argument filtering of the ordering [JAR06] were oriented: 18.10/5.54 18.10/5.54 b_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(x1)))) -> b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1)))) 18.10/5.54 b_{a_1}(a_{a_1}(a_{b_1}(b_{a_1}(x1)))) -> b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1)))) 18.10/5.54 b_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> b_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{a_1}(x1))))) 18.10/5.54 b_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> b_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{b_1}(x1))))) 18.10/5.54 a_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> a_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{a_1}(x1))))) 18.10/5.54 a_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> a_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{b_1}(x1))))) 18.10/5.54 18.10/5.54 18.10/5.54 ---------------------------------------- 18.10/5.54 18.10/5.54 (12) 18.10/5.54 Obligation: 18.10/5.54 Q DP problem: 18.10/5.54 The TRS P consists of the following rules: 18.10/5.54 18.10/5.54 B_{A_1}(a_{a_1}(a_{b_1}(b_{a_1}(x1)))) -> A_{B_1}(b_{a_1}(a_{a_1}(x1))) 18.10/5.54 B_{A_1}(a_{a_1}(a_{b_1}(b_{b_1}(x1)))) -> A_{B_1}(b_{a_1}(a_{b_1}(x1))) 18.10/5.54 18.10/5.54 The TRS R consists of the following rules: 18.10/5.54 18.10/5.54 b_{a_1}(a_{a_1}(a_{b_1}(b_{a_1}(x1)))) -> b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1)))) 18.10/5.54 b_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(x1)))) -> b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1)))) 18.10/5.54 a_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> a_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{a_1}(x1))))) 18.10/5.54 a_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> a_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{b_1}(x1))))) 18.10/5.54 b_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{a_1}(x1))))) -> b_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{a_1}(x1))))) 18.10/5.54 b_{b_1}(b_{a_1}(a_{b_1}(b_{a_1}(a_{b_1}(x1))))) -> b_{a_1}(a_{a_1}(a_{b_1}(b_{b_1}(b_{b_1}(x1))))) 18.10/5.54 18.10/5.54 Q is empty. 18.10/5.54 We have to consider all minimal (P,Q,R)-chains. 18.10/5.54 ---------------------------------------- 18.10/5.54 18.10/5.54 (13) DependencyGraphProof (EQUIVALENT) 18.10/5.54 The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 0 SCCs with 2 less nodes. 18.10/5.54 ---------------------------------------- 18.10/5.54 18.10/5.54 (14) 18.10/5.54 TRUE 21.20/9.84 EOF