/export/starexec/sandbox/solver/bin/starexec_run_standard /export/starexec/sandbox/benchmark/theBenchmark.xml /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- YES proof of /export/starexec/sandbox/benchmark/theBenchmark.xml # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty Termination w.r.t. Q of the given QTRS could be proven: (0) QTRS (1) Overlay + Local Confluence [EQUIVALENT, 0 ms] (2) QTRS (3) DependencyPairsProof [EQUIVALENT, 0 ms] (4) QDP (5) DependencyGraphProof [EQUIVALENT, 0 ms] (6) AND (7) QDP (8) UsableRulesProof [EQUIVALENT, 0 ms] (9) QDP (10) QReductionProof [EQUIVALENT, 0 ms] (11) QDP (12) ATransformationProof [EQUIVALENT, 0 ms] (13) QDP (14) QReductionProof [EQUIVALENT, 0 ms] (15) QDP (16) QDPSizeChangeProof [EQUIVALENT, 0 ms] (17) YES (18) QDP (19) UsableRulesProof [EQUIVALENT, 0 ms] (20) QDP (21) QReductionProof [EQUIVALENT, 0 ms] (22) QDP (23) TransformationProof [EQUIVALENT, 0 ms] (24) QDP (25) TransformationProof [EQUIVALENT, 0 ms] (26) QDP (27) TransformationProof [EQUIVALENT, 0 ms] (28) QDP (29) QDPOrderProof [EQUIVALENT, 1027 ms] (30) QDP (31) UsableRulesProof [EQUIVALENT, 0 ms] (32) QDP (33) ATransformationProof [EQUIVALENT, 0 ms] (34) QDP (35) QReductionProof [EQUIVALENT, 0 ms] (36) QDP (37) QDPSizeChangeProof [EQUIVALENT, 0 ms] (38) YES ---------------------------------------- (0) Obligation: Q restricted rewrite system: The TRS R consists of the following rules: app(app(plus, 0), y) -> y app(app(plus, app(s, x)), y) -> app(s, app(app(plus, x), y)) app(app(map, f), nil) -> nil app(app(map, f), app(app(cons, x), xs)) -> app(app(cons, app(f, x)), app(app(map, f), xs)) app(app(app(curry, g), x), y) -> app(app(g, x), y) inc -> app(map, app(app(curry, plus), app(s, 0))) Q is empty. ---------------------------------------- (1) Overlay + Local Confluence (EQUIVALENT) The TRS is overlay and locally confluent. By [NOC] we can switch to innermost. ---------------------------------------- (2) Obligation: Q restricted rewrite system: The TRS R consists of the following rules: app(app(plus, 0), y) -> y app(app(plus, app(s, x)), y) -> app(s, app(app(plus, x), y)) app(app(map, f), nil) -> nil app(app(map, f), app(app(cons, x), xs)) -> app(app(cons, app(f, x)), app(app(map, f), xs)) app(app(app(curry, g), x), y) -> app(app(g, x), y) inc -> app(map, app(app(curry, plus), app(s, 0))) The set Q consists of the following terms: app(app(plus, 0), x0) app(app(plus, app(s, x0)), x1) app(app(map, x0), nil) app(app(map, x0), app(app(cons, x1), x2)) app(app(app(curry, x0), x1), x2) inc ---------------------------------------- (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: APP(app(plus, app(s, x)), y) -> APP(s, app(app(plus, x), y)) APP(app(plus, app(s, x)), y) -> APP(app(plus, x), y) APP(app(plus, app(s, x)), y) -> APP(plus, x) APP(app(map, f), app(app(cons, x), xs)) -> APP(app(cons, app(f, x)), app(app(map, f), xs)) APP(app(map, f), app(app(cons, x), xs)) -> APP(cons, app(f, x)) APP(app(map, f), app(app(cons, x), xs)) -> APP(f, x) APP(app(map, f), app(app(cons, x), xs)) -> APP(app(map, f), xs) APP(app(app(curry, g), x), y) -> APP(app(g, x), y) APP(app(app(curry, g), x), y) -> APP(g, x) INC -> APP(map, app(app(curry, plus), app(s, 0))) INC -> APP(app(curry, plus), app(s, 0)) INC -> APP(curry, plus) INC -> APP(s, 0) The TRS R consists of the following rules: app(app(plus, 0), y) -> y app(app(plus, app(s, x)), y) -> app(s, app(app(plus, x), y)) app(app(map, f), nil) -> nil app(app(map, f), app(app(cons, x), xs)) -> app(app(cons, app(f, x)), app(app(map, f), xs)) app(app(app(curry, g), x), y) -> app(app(g, x), y) inc -> app(map, app(app(curry, plus), app(s, 0))) The set Q consists of the following terms: app(app(plus, 0), x0) app(app(plus, app(s, x0)), x1) app(app(map, x0), nil) app(app(map, x0), app(app(cons, x1), x2)) app(app(app(curry, x0), x1), x2) inc We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (5) DependencyGraphProof (EQUIVALENT) The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 2 SCCs with 8 less nodes. ---------------------------------------- (6) Complex Obligation (AND) ---------------------------------------- (7) Obligation: Q DP problem: The TRS P consists of the following rules: APP(app(plus, app(s, x)), y) -> APP(app(plus, x), y) The TRS R consists of the following rules: app(app(plus, 0), y) -> y app(app(plus, app(s, x)), y) -> app(s, app(app(plus, x), y)) app(app(map, f), nil) -> nil app(app(map, f), app(app(cons, x), xs)) -> app(app(cons, app(f, x)), app(app(map, f), xs)) app(app(app(curry, g), x), y) -> app(app(g, x), y) inc -> app(map, app(app(curry, plus), app(s, 0))) The set Q consists of the following terms: app(app(plus, 0), x0) app(app(plus, app(s, x0)), x1) app(app(map, x0), nil) app(app(map, x0), app(app(cons, x1), x2)) app(app(app(curry, x0), x1), x2) inc We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (8) UsableRulesProof (EQUIVALENT) As all Q-normal forms are R-normal forms we are in the innermost case. Hence, by the usable rules processor [LPAR04] we can delete all non-usable rules [FROCOS05] from R. ---------------------------------------- (9) Obligation: Q DP problem: The TRS P consists of the following rules: APP(app(plus, app(s, x)), y) -> APP(app(plus, x), y) R is empty. The set Q consists of the following terms: app(app(plus, 0), x0) app(app(plus, app(s, x0)), x1) app(app(map, x0), nil) app(app(map, x0), app(app(cons, x1), x2)) app(app(app(curry, x0), x1), x2) inc We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (10) QReductionProof (EQUIVALENT) We deleted the following terms from Q as each root-symbol of these terms does neither occur in P nor in R.[THIEMANN]. inc ---------------------------------------- (11) Obligation: Q DP problem: The TRS P consists of the following rules: APP(app(plus, app(s, x)), y) -> APP(app(plus, x), y) R is empty. The set Q consists of the following terms: app(app(plus, 0), x0) app(app(plus, app(s, x0)), x1) app(app(map, x0), nil) app(app(map, x0), app(app(cons, x1), x2)) app(app(app(curry, x0), x1), x2) We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (12) ATransformationProof (EQUIVALENT) We have applied the A-Transformation [FROCOS05] to get from an applicative problem to a standard problem. ---------------------------------------- (13) Obligation: Q DP problem: The TRS P consists of the following rules: plus1(s(x), y) -> plus1(x, y) R is empty. The set Q consists of the following terms: plus(0, x0) plus(s(x0), x1) map(x0, nil) map(x0, cons(x1, x2)) curry(x0, x1, x2) We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (14) QReductionProof (EQUIVALENT) We deleted the following terms from Q as each root-symbol of these terms does neither occur in P nor in R.[THIEMANN]. plus(0, x0) plus(s(x0), x1) map(x0, nil) map(x0, cons(x1, x2)) curry(x0, x1, x2) ---------------------------------------- (15) Obligation: Q DP problem: The TRS P consists of the following rules: plus1(s(x), y) -> plus1(x, y) R is empty. Q is empty. We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (16) 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: *plus1(s(x), y) -> plus1(x, y) The graph contains the following edges 1 > 1, 2 >= 2 ---------------------------------------- (17) YES ---------------------------------------- (18) Obligation: Q DP problem: The TRS P consists of the following rules: APP(app(map, f), app(app(cons, x), xs)) -> APP(app(map, f), xs) APP(app(map, f), app(app(cons, x), xs)) -> APP(f, x) APP(app(app(curry, g), x), y) -> APP(app(g, x), y) APP(app(app(curry, g), x), y) -> APP(g, x) The TRS R consists of the following rules: app(app(plus, 0), y) -> y app(app(plus, app(s, x)), y) -> app(s, app(app(plus, x), y)) app(app(map, f), nil) -> nil app(app(map, f), app(app(cons, x), xs)) -> app(app(cons, app(f, x)), app(app(map, f), xs)) app(app(app(curry, g), x), y) -> app(app(g, x), y) inc -> app(map, app(app(curry, plus), app(s, 0))) The set Q consists of the following terms: app(app(plus, 0), x0) app(app(plus, app(s, x0)), x1) app(app(map, x0), nil) app(app(map, x0), app(app(cons, x1), x2)) app(app(app(curry, x0), x1), x2) inc We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (19) UsableRulesProof (EQUIVALENT) As all Q-normal forms are R-normal forms we are in the innermost case. Hence, by the usable rules processor [LPAR04] we can delete all non-usable rules [FROCOS05] from R. ---------------------------------------- (20) Obligation: Q DP problem: The TRS P consists of the following rules: APP(app(map, f), app(app(cons, x), xs)) -> APP(app(map, f), xs) APP(app(map, f), app(app(cons, x), xs)) -> APP(f, x) APP(app(app(curry, g), x), y) -> APP(app(g, x), y) APP(app(app(curry, g), x), y) -> APP(g, x) The TRS R consists of the following rules: app(app(plus, 0), y) -> y app(app(plus, app(s, x)), y) -> app(s, app(app(plus, x), y)) app(app(map, f), nil) -> nil app(app(map, f), app(app(cons, x), xs)) -> app(app(cons, app(f, x)), app(app(map, f), xs)) app(app(app(curry, g), x), y) -> app(app(g, x), y) The set Q consists of the following terms: app(app(plus, 0), x0) app(app(plus, app(s, x0)), x1) app(app(map, x0), nil) app(app(map, x0), app(app(cons, x1), x2)) app(app(app(curry, x0), x1), x2) inc We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (21) QReductionProof (EQUIVALENT) We deleted the following terms from Q as each root-symbol of these terms does neither occur in P nor in R.[THIEMANN]. inc ---------------------------------------- (22) Obligation: Q DP problem: The TRS P consists of the following rules: APP(app(map, f), app(app(cons, x), xs)) -> APP(app(map, f), xs) APP(app(map, f), app(app(cons, x), xs)) -> APP(f, x) APP(app(app(curry, g), x), y) -> APP(app(g, x), y) APP(app(app(curry, g), x), y) -> APP(g, x) The TRS R consists of the following rules: app(app(plus, 0), y) -> y app(app(plus, app(s, x)), y) -> app(s, app(app(plus, x), y)) app(app(map, f), nil) -> nil app(app(map, f), app(app(cons, x), xs)) -> app(app(cons, app(f, x)), app(app(map, f), xs)) app(app(app(curry, g), x), y) -> app(app(g, x), y) The set Q consists of the following terms: app(app(plus, 0), x0) app(app(plus, app(s, x0)), x1) app(app(map, x0), nil) app(app(map, x0), app(app(cons, x1), x2)) app(app(app(curry, x0), x1), x2) We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (23) TransformationProof (EQUIVALENT) By forward instantiating [JAR06] the rule APP(app(map, f), app(app(cons, x), xs)) -> APP(app(map, f), xs) we obtained the following new rules [LPAR04]: (APP(app(map, x0), app(app(cons, x1), app(app(cons, y_1), y_2))) -> APP(app(map, x0), app(app(cons, y_1), y_2)),APP(app(map, x0), app(app(cons, x1), app(app(cons, y_1), y_2))) -> APP(app(map, x0), app(app(cons, y_1), y_2))) ---------------------------------------- (24) Obligation: Q DP problem: The TRS P consists of the following rules: APP(app(map, f), app(app(cons, x), xs)) -> APP(f, x) APP(app(app(curry, g), x), y) -> APP(app(g, x), y) APP(app(app(curry, g), x), y) -> APP(g, x) APP(app(map, x0), app(app(cons, x1), app(app(cons, y_1), y_2))) -> APP(app(map, x0), app(app(cons, y_1), y_2)) The TRS R consists of the following rules: app(app(plus, 0), y) -> y app(app(plus, app(s, x)), y) -> app(s, app(app(plus, x), y)) app(app(map, f), nil) -> nil app(app(map, f), app(app(cons, x), xs)) -> app(app(cons, app(f, x)), app(app(map, f), xs)) app(app(app(curry, g), x), y) -> app(app(g, x), y) The set Q consists of the following terms: app(app(plus, 0), x0) app(app(plus, app(s, x0)), x1) app(app(map, x0), nil) app(app(map, x0), app(app(cons, x1), x2)) app(app(app(curry, x0), x1), x2) We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (25) TransformationProof (EQUIVALENT) By forward instantiating [JAR06] the rule APP(app(map, f), app(app(cons, x), xs)) -> APP(f, x) we obtained the following new rules [LPAR04]: (APP(app(map, app(app(curry, y_0), y_1)), app(app(cons, x1), x2)) -> APP(app(app(curry, y_0), y_1), x1),APP(app(map, app(app(curry, y_0), y_1)), app(app(cons, x1), x2)) -> APP(app(app(curry, y_0), y_1), x1)) (APP(app(map, app(map, y_0)), app(app(cons, app(app(cons, y_1), y_2)), x2)) -> APP(app(map, y_0), app(app(cons, y_1), y_2)),APP(app(map, app(map, y_0)), app(app(cons, app(app(cons, y_1), y_2)), x2)) -> APP(app(map, y_0), app(app(cons, y_1), y_2))) (APP(app(map, app(map, y_0)), app(app(cons, app(app(cons, y_1), app(app(cons, y_2), y_3))), x2)) -> APP(app(map, y_0), app(app(cons, y_1), app(app(cons, y_2), y_3))),APP(app(map, app(map, y_0)), app(app(cons, app(app(cons, y_1), app(app(cons, y_2), y_3))), x2)) -> APP(app(map, y_0), app(app(cons, y_1), app(app(cons, y_2), y_3)))) ---------------------------------------- (26) Obligation: Q DP problem: The TRS P consists of the following rules: APP(app(app(curry, g), x), y) -> APP(app(g, x), y) APP(app(app(curry, g), x), y) -> APP(g, x) APP(app(map, x0), app(app(cons, x1), app(app(cons, y_1), y_2))) -> APP(app(map, x0), app(app(cons, y_1), y_2)) APP(app(map, app(app(curry, y_0), y_1)), app(app(cons, x1), x2)) -> APP(app(app(curry, y_0), y_1), x1) APP(app(map, app(map, y_0)), app(app(cons, app(app(cons, y_1), y_2)), x2)) -> APP(app(map, y_0), app(app(cons, y_1), y_2)) APP(app(map, app(map, y_0)), app(app(cons, app(app(cons, y_1), app(app(cons, y_2), y_3))), x2)) -> APP(app(map, y_0), app(app(cons, y_1), app(app(cons, y_2), y_3))) The TRS R consists of the following rules: app(app(plus, 0), y) -> y app(app(plus, app(s, x)), y) -> app(s, app(app(plus, x), y)) app(app(map, f), nil) -> nil app(app(map, f), app(app(cons, x), xs)) -> app(app(cons, app(f, x)), app(app(map, f), xs)) app(app(app(curry, g), x), y) -> app(app(g, x), y) The set Q consists of the following terms: app(app(plus, 0), x0) app(app(plus, app(s, x0)), x1) app(app(map, x0), nil) app(app(map, x0), app(app(cons, x1), x2)) app(app(app(curry, x0), x1), x2) We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (27) TransformationProof (EQUIVALENT) By forward instantiating [JAR06] the rule APP(app(app(curry, g), x), y) -> APP(g, x) we obtained the following new rules [LPAR04]: (APP(app(app(curry, app(app(curry, y_0), y_1)), x1), x2) -> APP(app(app(curry, y_0), y_1), x1),APP(app(app(curry, app(app(curry, y_0), y_1)), x1), x2) -> APP(app(app(curry, y_0), y_1), x1)) (APP(app(app(curry, app(map, y_0)), app(app(cons, y_1), app(app(cons, y_2), y_3))), x2) -> APP(app(map, y_0), app(app(cons, y_1), app(app(cons, y_2), y_3))),APP(app(app(curry, app(map, y_0)), app(app(cons, y_1), app(app(cons, y_2), y_3))), x2) -> APP(app(map, y_0), app(app(cons, y_1), app(app(cons, y_2), y_3)))) (APP(app(app(curry, app(map, app(app(curry, y_0), y_1))), app(app(cons, y_2), y_3)), x2) -> APP(app(map, app(app(curry, y_0), y_1)), app(app(cons, y_2), y_3)),APP(app(app(curry, app(map, app(app(curry, y_0), y_1))), app(app(cons, y_2), y_3)), x2) -> APP(app(map, app(app(curry, y_0), y_1)), app(app(cons, y_2), y_3))) (APP(app(app(curry, app(map, app(map, y_0))), app(app(cons, app(app(cons, y_1), y_2)), y_3)), x2) -> APP(app(map, app(map, y_0)), app(app(cons, app(app(cons, y_1), y_2)), y_3)),APP(app(app(curry, app(map, app(map, y_0))), app(app(cons, app(app(cons, y_1), y_2)), y_3)), x2) -> APP(app(map, app(map, y_0)), app(app(cons, app(app(cons, y_1), y_2)), y_3))) (APP(app(app(curry, app(map, app(map, y_0))), app(app(cons, app(app(cons, y_1), app(app(cons, y_2), y_3))), y_4)), x2) -> APP(app(map, app(map, y_0)), app(app(cons, app(app(cons, y_1), app(app(cons, y_2), y_3))), y_4)),APP(app(app(curry, app(map, app(map, y_0))), app(app(cons, app(app(cons, y_1), app(app(cons, y_2), y_3))), y_4)), x2) -> APP(app(map, app(map, y_0)), app(app(cons, app(app(cons, y_1), app(app(cons, y_2), y_3))), y_4))) ---------------------------------------- (28) Obligation: Q DP problem: The TRS P consists of the following rules: APP(app(app(curry, g), x), y) -> APP(app(g, x), y) APP(app(map, x0), app(app(cons, x1), app(app(cons, y_1), y_2))) -> APP(app(map, x0), app(app(cons, y_1), y_2)) APP(app(map, app(app(curry, y_0), y_1)), app(app(cons, x1), x2)) -> APP(app(app(curry, y_0), y_1), x1) APP(app(map, app(map, y_0)), app(app(cons, app(app(cons, y_1), y_2)), x2)) -> APP(app(map, y_0), app(app(cons, y_1), y_2)) APP(app(map, app(map, y_0)), app(app(cons, app(app(cons, y_1), app(app(cons, y_2), y_3))), x2)) -> APP(app(map, y_0), app(app(cons, y_1), app(app(cons, y_2), y_3))) APP(app(app(curry, app(app(curry, y_0), y_1)), x1), x2) -> APP(app(app(curry, y_0), y_1), x1) APP(app(app(curry, app(map, y_0)), app(app(cons, y_1), app(app(cons, y_2), y_3))), x2) -> APP(app(map, y_0), app(app(cons, y_1), app(app(cons, y_2), y_3))) APP(app(app(curry, app(map, app(app(curry, y_0), y_1))), app(app(cons, y_2), y_3)), x2) -> APP(app(map, app(app(curry, y_0), y_1)), app(app(cons, y_2), y_3)) APP(app(app(curry, app(map, app(map, y_0))), app(app(cons, app(app(cons, y_1), y_2)), y_3)), x2) -> APP(app(map, app(map, y_0)), app(app(cons, app(app(cons, y_1), y_2)), y_3)) APP(app(app(curry, app(map, app(map, y_0))), app(app(cons, app(app(cons, y_1), app(app(cons, y_2), y_3))), y_4)), x2) -> APP(app(map, app(map, y_0)), app(app(cons, app(app(cons, y_1), app(app(cons, y_2), y_3))), y_4)) The TRS R consists of the following rules: app(app(plus, 0), y) -> y app(app(plus, app(s, x)), y) -> app(s, app(app(plus, x), y)) app(app(map, f), nil) -> nil app(app(map, f), app(app(cons, x), xs)) -> app(app(cons, app(f, x)), app(app(map, f), xs)) app(app(app(curry, g), x), y) -> app(app(g, x), y) The set Q consists of the following terms: app(app(plus, 0), x0) app(app(plus, app(s, x0)), x1) app(app(map, x0), nil) app(app(map, x0), app(app(cons, x1), x2)) app(app(app(curry, x0), x1), x2) We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (29) QDPOrderProof (EQUIVALENT) We use the reduction pair processor [LPAR04,JAR06]. The following pairs can be oriented strictly and are deleted. APP(app(app(curry, g), x), y) -> APP(app(g, x), y) APP(app(map, app(app(curry, y_0), y_1)), app(app(cons, x1), x2)) -> APP(app(app(curry, y_0), y_1), x1) APP(app(map, app(map, y_0)), app(app(cons, app(app(cons, y_1), y_2)), x2)) -> APP(app(map, y_0), app(app(cons, y_1), y_2)) APP(app(map, app(map, y_0)), app(app(cons, app(app(cons, y_1), app(app(cons, y_2), y_3))), x2)) -> APP(app(map, y_0), app(app(cons, y_1), app(app(cons, y_2), y_3))) APP(app(app(curry, app(app(curry, y_0), y_1)), x1), x2) -> APP(app(app(curry, y_0), y_1), x1) APP(app(app(curry, app(map, y_0)), app(app(cons, y_1), app(app(cons, y_2), y_3))), x2) -> APP(app(map, y_0), app(app(cons, y_1), app(app(cons, y_2), y_3))) APP(app(app(curry, app(map, app(app(curry, y_0), y_1))), app(app(cons, y_2), y_3)), x2) -> APP(app(map, app(app(curry, y_0), y_1)), app(app(cons, y_2), y_3)) APP(app(app(curry, app(map, app(map, y_0))), app(app(cons, app(app(cons, y_1), y_2)), y_3)), x2) -> APP(app(map, app(map, y_0)), app(app(cons, app(app(cons, y_1), y_2)), y_3)) APP(app(app(curry, app(map, app(map, y_0))), app(app(cons, app(app(cons, y_1), app(app(cons, y_2), y_3))), y_4)), x2) -> APP(app(map, app(map, y_0)), app(app(cons, app(app(cons, y_1), app(app(cons, y_2), y_3))), y_4)) The remaining pairs can at least be oriented weakly. Used ordering: Polynomial interpretation [POLO]: POL(0) = 1 POL(APP(x_1, x_2)) = x_1 POL(app(x_1, x_2)) = x_1 + x_1*x_2 POL(cons) = 0 POL(curry) = 1 POL(map) = 1 POL(nil) = 1 POL(plus) = 1 POL(s) = 0 The following usable rules [FROCOS05] with respect to the argument filtering of the ordering [JAR06] were oriented: app(app(plus, 0), y) -> y app(app(plus, app(s, x)), y) -> app(s, app(app(plus, x), y)) app(app(map, f), nil) -> nil app(app(map, f), app(app(cons, x), xs)) -> app(app(cons, app(f, x)), app(app(map, f), xs)) app(app(app(curry, g), x), y) -> app(app(g, x), y) ---------------------------------------- (30) Obligation: Q DP problem: The TRS P consists of the following rules: APP(app(map, x0), app(app(cons, x1), app(app(cons, y_1), y_2))) -> APP(app(map, x0), app(app(cons, y_1), y_2)) The TRS R consists of the following rules: app(app(plus, 0), y) -> y app(app(plus, app(s, x)), y) -> app(s, app(app(plus, x), y)) app(app(map, f), nil) -> nil app(app(map, f), app(app(cons, x), xs)) -> app(app(cons, app(f, x)), app(app(map, f), xs)) app(app(app(curry, g), x), y) -> app(app(g, x), y) The set Q consists of the following terms: app(app(plus, 0), x0) app(app(plus, app(s, x0)), x1) app(app(map, x0), nil) app(app(map, x0), app(app(cons, x1), x2)) app(app(app(curry, x0), x1), x2) We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (31) UsableRulesProof (EQUIVALENT) As all Q-normal forms are R-normal forms we are in the innermost case. Hence, by the usable rules processor [LPAR04] we can delete all non-usable rules [FROCOS05] from R. ---------------------------------------- (32) Obligation: Q DP problem: The TRS P consists of the following rules: APP(app(map, x0), app(app(cons, x1), app(app(cons, y_1), y_2))) -> APP(app(map, x0), app(app(cons, y_1), y_2)) R is empty. The set Q consists of the following terms: app(app(plus, 0), x0) app(app(plus, app(s, x0)), x1) app(app(map, x0), nil) app(app(map, x0), app(app(cons, x1), x2)) app(app(app(curry, x0), x1), x2) We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (33) ATransformationProof (EQUIVALENT) We have applied the A-Transformation [FROCOS05] to get from an applicative problem to a standard problem. ---------------------------------------- (34) Obligation: Q DP problem: The TRS P consists of the following rules: map1(x0, cons(x1, cons(y_1, y_2))) -> map1(x0, cons(y_1, y_2)) R is empty. The set Q consists of the following terms: plus(0, x0) plus(s(x0), x1) map(x0, nil) map(x0, cons(x1, x2)) curry(x0, x1, x2) We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (35) QReductionProof (EQUIVALENT) We deleted the following terms from Q as each root-symbol of these terms does neither occur in P nor in R.[THIEMANN]. plus(0, x0) plus(s(x0), x1) map(x0, nil) map(x0, cons(x1, x2)) curry(x0, x1, x2) ---------------------------------------- (36) Obligation: Q DP problem: The TRS P consists of the following rules: map1(x0, cons(x1, cons(y_1, y_2))) -> map1(x0, cons(y_1, y_2)) R is empty. Q is empty. We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (37) 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: *map1(x0, cons(x1, cons(y_1, y_2))) -> map1(x0, cons(y_1, y_2)) The graph contains the following edges 1 >= 1, 2 > 2 ---------------------------------------- (38) YES