/export/starexec/sandbox2/solver/bin/starexec_run_standard /export/starexec/sandbox2/benchmark/theBenchmark.xml /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- YES proof of /export/starexec/sandbox2/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# AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty Termination w.r.t. Q of the given QTRS could be proven: (0) QTRS (1) QTRSToCSRProof [EQUIVALENT, 0 ms] (2) CSR (3) CSRRRRProof [EQUIVALENT, 113 ms] (4) CSR (5) CSRRRRProof [EQUIVALENT, 0 ms] (6) CSR (7) CSRRRRProof [EQUIVALENT, 10 ms] (8) CSR (9) CSRRRRProof [EQUIVALENT, 0 ms] (10) CSR (11) CSRRRRProof [EQUIVALENT, 0 ms] (12) CSR (13) CSRRRRProof [EQUIVALENT, 0 ms] (14) CSR (15) CSRRRRProof [EQUIVALENT, 0 ms] (16) CSR (17) RisEmptyProof [EQUIVALENT, 0 ms] (18) YES ---------------------------------------- (0) Obligation: Q restricted rewrite system: The TRS R consists of the following rules: active(pairNs) -> mark(cons(0, incr(oddNs))) active(oddNs) -> mark(incr(pairNs)) active(incr(cons(X, XS))) -> mark(cons(s(X), incr(XS))) active(take(0, XS)) -> mark(nil) active(take(s(N), cons(X, XS))) -> mark(cons(X, take(N, XS))) active(zip(nil, XS)) -> mark(nil) active(zip(X, nil)) -> mark(nil) active(zip(cons(X, XS), cons(Y, YS))) -> mark(cons(pair(X, Y), zip(XS, YS))) active(tail(cons(X, XS))) -> mark(XS) active(repItems(nil)) -> mark(nil) active(repItems(cons(X, XS))) -> mark(cons(X, cons(X, repItems(XS)))) active(cons(X1, X2)) -> cons(active(X1), X2) active(incr(X)) -> incr(active(X)) active(s(X)) -> s(active(X)) active(take(X1, X2)) -> take(active(X1), X2) active(take(X1, X2)) -> take(X1, active(X2)) active(zip(X1, X2)) -> zip(active(X1), X2) active(zip(X1, X2)) -> zip(X1, active(X2)) active(pair(X1, X2)) -> pair(active(X1), X2) active(pair(X1, X2)) -> pair(X1, active(X2)) active(tail(X)) -> tail(active(X)) active(repItems(X)) -> repItems(active(X)) cons(mark(X1), X2) -> mark(cons(X1, X2)) incr(mark(X)) -> mark(incr(X)) s(mark(X)) -> mark(s(X)) take(mark(X1), X2) -> mark(take(X1, X2)) take(X1, mark(X2)) -> mark(take(X1, X2)) zip(mark(X1), X2) -> mark(zip(X1, X2)) zip(X1, mark(X2)) -> mark(zip(X1, X2)) pair(mark(X1), X2) -> mark(pair(X1, X2)) pair(X1, mark(X2)) -> mark(pair(X1, X2)) tail(mark(X)) -> mark(tail(X)) repItems(mark(X)) -> mark(repItems(X)) proper(pairNs) -> ok(pairNs) proper(cons(X1, X2)) -> cons(proper(X1), proper(X2)) proper(0) -> ok(0) proper(incr(X)) -> incr(proper(X)) proper(oddNs) -> ok(oddNs) proper(s(X)) -> s(proper(X)) proper(take(X1, X2)) -> take(proper(X1), proper(X2)) proper(nil) -> ok(nil) proper(zip(X1, X2)) -> zip(proper(X1), proper(X2)) proper(pair(X1, X2)) -> pair(proper(X1), proper(X2)) proper(tail(X)) -> tail(proper(X)) proper(repItems(X)) -> repItems(proper(X)) cons(ok(X1), ok(X2)) -> ok(cons(X1, X2)) incr(ok(X)) -> ok(incr(X)) s(ok(X)) -> ok(s(X)) take(ok(X1), ok(X2)) -> ok(take(X1, X2)) zip(ok(X1), ok(X2)) -> ok(zip(X1, X2)) pair(ok(X1), ok(X2)) -> ok(pair(X1, X2)) tail(ok(X)) -> ok(tail(X)) repItems(ok(X)) -> ok(repItems(X)) top(mark(X)) -> top(proper(X)) top(ok(X)) -> top(active(X)) Q is empty. ---------------------------------------- (1) QTRSToCSRProof (EQUIVALENT) The following Q TRS is given: Q restricted rewrite system: The TRS R consists of the following rules: active(pairNs) -> mark(cons(0, incr(oddNs))) active(oddNs) -> mark(incr(pairNs)) active(incr(cons(X, XS))) -> mark(cons(s(X), incr(XS))) active(take(0, XS)) -> mark(nil) active(take(s(N), cons(X, XS))) -> mark(cons(X, take(N, XS))) active(zip(nil, XS)) -> mark(nil) active(zip(X, nil)) -> mark(nil) active(zip(cons(X, XS), cons(Y, YS))) -> mark(cons(pair(X, Y), zip(XS, YS))) active(tail(cons(X, XS))) -> mark(XS) active(repItems(nil)) -> mark(nil) active(repItems(cons(X, XS))) -> mark(cons(X, cons(X, repItems(XS)))) active(cons(X1, X2)) -> cons(active(X1), X2) active(incr(X)) -> incr(active(X)) active(s(X)) -> s(active(X)) active(take(X1, X2)) -> take(active(X1), X2) active(take(X1, X2)) -> take(X1, active(X2)) active(zip(X1, X2)) -> zip(active(X1), X2) active(zip(X1, X2)) -> zip(X1, active(X2)) active(pair(X1, X2)) -> pair(active(X1), X2) active(pair(X1, X2)) -> pair(X1, active(X2)) active(tail(X)) -> tail(active(X)) active(repItems(X)) -> repItems(active(X)) cons(mark(X1), X2) -> mark(cons(X1, X2)) incr(mark(X)) -> mark(incr(X)) s(mark(X)) -> mark(s(X)) take(mark(X1), X2) -> mark(take(X1, X2)) take(X1, mark(X2)) -> mark(take(X1, X2)) zip(mark(X1), X2) -> mark(zip(X1, X2)) zip(X1, mark(X2)) -> mark(zip(X1, X2)) pair(mark(X1), X2) -> mark(pair(X1, X2)) pair(X1, mark(X2)) -> mark(pair(X1, X2)) tail(mark(X)) -> mark(tail(X)) repItems(mark(X)) -> mark(repItems(X)) proper(pairNs) -> ok(pairNs) proper(cons(X1, X2)) -> cons(proper(X1), proper(X2)) proper(0) -> ok(0) proper(incr(X)) -> incr(proper(X)) proper(oddNs) -> ok(oddNs) proper(s(X)) -> s(proper(X)) proper(take(X1, X2)) -> take(proper(X1), proper(X2)) proper(nil) -> ok(nil) proper(zip(X1, X2)) -> zip(proper(X1), proper(X2)) proper(pair(X1, X2)) -> pair(proper(X1), proper(X2)) proper(tail(X)) -> tail(proper(X)) proper(repItems(X)) -> repItems(proper(X)) cons(ok(X1), ok(X2)) -> ok(cons(X1, X2)) incr(ok(X)) -> ok(incr(X)) s(ok(X)) -> ok(s(X)) take(ok(X1), ok(X2)) -> ok(take(X1, X2)) zip(ok(X1), ok(X2)) -> ok(zip(X1, X2)) pair(ok(X1), ok(X2)) -> ok(pair(X1, X2)) tail(ok(X)) -> ok(tail(X)) repItems(ok(X)) -> ok(repItems(X)) top(mark(X)) -> top(proper(X)) top(ok(X)) -> top(active(X)) Q is empty. Special symbols used for the transformation (see [GM04]): top: top_1, active: active_1, mark: mark_1, ok: ok_1, proper: proper_1 The replacement map contains the following entries: pairNs: empty set cons: {1} 0: empty set incr: {1} oddNs: empty set s: {1} take: {1, 2} nil: empty set zip: {1, 2} pair: {1, 2} tail: {1} repItems: {1} The QTRS contained all rules created by the complete Giesl-Middeldorp transformation. Therefore, the inverse transformation is complete (and sound). ---------------------------------------- (2) Obligation: Context-sensitive rewrite system: The TRS R consists of the following rules: pairNs -> cons(0, incr(oddNs)) oddNs -> incr(pairNs) incr(cons(X, XS)) -> cons(s(X), incr(XS)) take(0, XS) -> nil take(s(N), cons(X, XS)) -> cons(X, take(N, XS)) zip(nil, XS) -> nil zip(X, nil) -> nil zip(cons(X, XS), cons(Y, YS)) -> cons(pair(X, Y), zip(XS, YS)) tail(cons(X, XS)) -> XS repItems(nil) -> nil repItems(cons(X, XS)) -> cons(X, cons(X, repItems(XS))) The replacement map contains the following entries: pairNs: empty set cons: {1} 0: empty set incr: {1} oddNs: empty set s: {1} take: {1, 2} nil: empty set zip: {1, 2} pair: {1, 2} tail: {1} repItems: {1} ---------------------------------------- (3) CSRRRRProof (EQUIVALENT) The following CSR is given: Context-sensitive rewrite system: The TRS R consists of the following rules: pairNs -> cons(0, incr(oddNs)) oddNs -> incr(pairNs) incr(cons(X, XS)) -> cons(s(X), incr(XS)) take(0, XS) -> nil take(s(N), cons(X, XS)) -> cons(X, take(N, XS)) zip(nil, XS) -> nil zip(X, nil) -> nil zip(cons(X, XS), cons(Y, YS)) -> cons(pair(X, Y), zip(XS, YS)) tail(cons(X, XS)) -> XS repItems(nil) -> nil repItems(cons(X, XS)) -> cons(X, cons(X, repItems(XS))) The replacement map contains the following entries: pairNs: empty set cons: {1} 0: empty set incr: {1} oddNs: empty set s: {1} take: {1, 2} nil: empty set zip: {1, 2} pair: {1, 2} tail: {1} repItems: {1} Used ordering: Matrix interpretation [MATRO] to (N^2, +, *, >=, >) : <<< POL(pairNs) = [[0], [1]] >>> <<< POL(cons(x_1, x_2)) = [[0], [0]] + [[1, 0], [1, 0]] * x_1 + [[1, 0], [0, 1]] * x_2 >>> <<< POL(0) = [[0], [1]] >>> <<< POL(incr(x_1)) = [[0], [0]] + [[1, 0], [1, 0]] * x_1 >>> <<< POL(oddNs) = [[0], [1]] >>> <<< POL(s(x_1)) = [[0], [0]] + [[1, 0], [1, 1]] * x_1 >>> <<< POL(take(x_1, x_2)) = [[0], [0]] + [[1, 1], [1, 1]] * x_1 + [[1, 1], [1, 1]] * x_2 >>> <<< POL(nil) = [[1], [1]] >>> <<< POL(zip(x_1, x_2)) = [[0], [0]] + [[1, 1], [1, 1]] * x_1 + [[1, 1], [1, 1]] * x_2 >>> <<< POL(pair(x_1, x_2)) = [[0], [1]] + [[1, 0], [1, 1]] * x_1 + [[1, 0], [1, 1]] * x_2 >>> <<< POL(tail(x_1)) = [[1], [1]] + [[1, 1], [1, 1]] * x_1 >>> <<< POL(repItems(x_1)) = [[1], [1]] + [[1, 1], [1, 1]] * x_1 >>> With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: zip(nil, XS) -> nil zip(X, nil) -> nil tail(cons(X, XS)) -> XS repItems(nil) -> nil ---------------------------------------- (4) Obligation: Context-sensitive rewrite system: The TRS R consists of the following rules: pairNs -> cons(0, incr(oddNs)) oddNs -> incr(pairNs) incr(cons(X, XS)) -> cons(s(X), incr(XS)) take(0, XS) -> nil take(s(N), cons(X, XS)) -> cons(X, take(N, XS)) zip(cons(X, XS), cons(Y, YS)) -> cons(pair(X, Y), zip(XS, YS)) repItems(cons(X, XS)) -> cons(X, cons(X, repItems(XS))) The replacement map contains the following entries: pairNs: empty set cons: {1} 0: empty set incr: {1} oddNs: empty set s: {1} take: {1, 2} nil: empty set zip: {1, 2} pair: {1, 2} repItems: {1} ---------------------------------------- (5) CSRRRRProof (EQUIVALENT) The following CSR is given: Context-sensitive rewrite system: The TRS R consists of the following rules: pairNs -> cons(0, incr(oddNs)) oddNs -> incr(pairNs) incr(cons(X, XS)) -> cons(s(X), incr(XS)) take(0, XS) -> nil take(s(N), cons(X, XS)) -> cons(X, take(N, XS)) zip(cons(X, XS), cons(Y, YS)) -> cons(pair(X, Y), zip(XS, YS)) repItems(cons(X, XS)) -> cons(X, cons(X, repItems(XS))) The replacement map contains the following entries: pairNs: empty set cons: {1} 0: empty set incr: {1} oddNs: empty set s: {1} take: {1, 2} nil: empty set zip: {1, 2} pair: {1, 2} repItems: {1} Used ordering: Polynomial interpretation [POLO]: POL(0) = 0 POL(cons(x_1, x_2)) = 1 + x_1 POL(incr(x_1)) = x_1 POL(nil) = 1 POL(oddNs) = 1 POL(pair(x_1, x_2)) = x_1 + x_2 POL(pairNs) = 1 POL(repItems(x_1)) = x_1 POL(s(x_1)) = x_1 POL(take(x_1, x_2)) = 1 + x_1 + x_2 POL(zip(x_1, x_2)) = 1 + x_1 + x_2 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: take(s(N), cons(X, XS)) -> cons(X, take(N, XS)) zip(cons(X, XS), cons(Y, YS)) -> cons(pair(X, Y), zip(XS, YS)) ---------------------------------------- (6) Obligation: Context-sensitive rewrite system: The TRS R consists of the following rules: pairNs -> cons(0, incr(oddNs)) oddNs -> incr(pairNs) incr(cons(X, XS)) -> cons(s(X), incr(XS)) take(0, XS) -> nil repItems(cons(X, XS)) -> cons(X, cons(X, repItems(XS))) The replacement map contains the following entries: pairNs: empty set cons: {1} 0: empty set incr: {1} oddNs: empty set s: {1} take: {1, 2} nil: empty set repItems: {1} ---------------------------------------- (7) CSRRRRProof (EQUIVALENT) The following CSR is given: Context-sensitive rewrite system: The TRS R consists of the following rules: pairNs -> cons(0, incr(oddNs)) oddNs -> incr(pairNs) incr(cons(X, XS)) -> cons(s(X), incr(XS)) take(0, XS) -> nil repItems(cons(X, XS)) -> cons(X, cons(X, repItems(XS))) The replacement map contains the following entries: pairNs: empty set cons: {1} 0: empty set incr: {1} oddNs: empty set s: {1} take: {1, 2} nil: empty set repItems: {1} Used ordering: Polynomial interpretation [POLO]: POL(0) = 0 POL(cons(x_1, x_2)) = 2 + 2*x_1 POL(incr(x_1)) = x_1 POL(nil) = 0 POL(oddNs) = 2 POL(pairNs) = 2 POL(repItems(x_1)) = 1 + 2*x_1 POL(s(x_1)) = x_1 POL(take(x_1, x_2)) = 2*x_1 + x_2 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: repItems(cons(X, XS)) -> cons(X, cons(X, repItems(XS))) ---------------------------------------- (8) Obligation: Context-sensitive rewrite system: The TRS R consists of the following rules: pairNs -> cons(0, incr(oddNs)) oddNs -> incr(pairNs) incr(cons(X, XS)) -> cons(s(X), incr(XS)) take(0, XS) -> nil The replacement map contains the following entries: pairNs: empty set cons: {1} 0: empty set incr: {1} oddNs: empty set s: {1} take: {1, 2} nil: empty set ---------------------------------------- (9) CSRRRRProof (EQUIVALENT) The following CSR is given: Context-sensitive rewrite system: The TRS R consists of the following rules: pairNs -> cons(0, incr(oddNs)) oddNs -> incr(pairNs) incr(cons(X, XS)) -> cons(s(X), incr(XS)) take(0, XS) -> nil The replacement map contains the following entries: pairNs: empty set cons: {1} 0: empty set incr: {1} oddNs: empty set s: {1} take: {1, 2} nil: empty set Used ordering: Polynomial interpretation [POLO]: POL(0) = 0 POL(cons(x_1, x_2)) = x_1 + x_2 POL(incr(x_1)) = x_1 POL(nil) = 0 POL(oddNs) = 1 POL(pairNs) = 1 POL(s(x_1)) = x_1 POL(take(x_1, x_2)) = 1 + x_1 + x_2 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: take(0, XS) -> nil ---------------------------------------- (10) Obligation: Context-sensitive rewrite system: The TRS R consists of the following rules: pairNs -> cons(0, incr(oddNs)) oddNs -> incr(pairNs) incr(cons(X, XS)) -> cons(s(X), incr(XS)) The replacement map contains the following entries: pairNs: empty set cons: {1} 0: empty set incr: {1} oddNs: empty set s: {1} ---------------------------------------- (11) CSRRRRProof (EQUIVALENT) The following CSR is given: Context-sensitive rewrite system: The TRS R consists of the following rules: pairNs -> cons(0, incr(oddNs)) oddNs -> incr(pairNs) incr(cons(X, XS)) -> cons(s(X), incr(XS)) The replacement map contains the following entries: pairNs: empty set cons: {1} 0: empty set incr: {1} oddNs: empty set s: {1} Used ordering: Polynomial interpretation [POLO]: POL(0) = 0 POL(cons(x_1, x_2)) = x_1 POL(incr(x_1)) = x_1 POL(oddNs) = 1 POL(pairNs) = 1 POL(s(x_1)) = x_1 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: pairNs -> cons(0, incr(oddNs)) ---------------------------------------- (12) Obligation: Context-sensitive rewrite system: The TRS R consists of the following rules: oddNs -> incr(pairNs) incr(cons(X, XS)) -> cons(s(X), incr(XS)) The replacement map contains the following entries: pairNs: empty set cons: {1} incr: {1} oddNs: empty set s: {1} ---------------------------------------- (13) CSRRRRProof (EQUIVALENT) The following CSR is given: Context-sensitive rewrite system: The TRS R consists of the following rules: oddNs -> incr(pairNs) incr(cons(X, XS)) -> cons(s(X), incr(XS)) The replacement map contains the following entries: pairNs: empty set cons: {1} incr: {1} oddNs: empty set s: {1} Used ordering: Polynomial interpretation [POLO]: POL(cons(x_1, x_2)) = x_1 POL(incr(x_1)) = 1 + x_1 POL(oddNs) = 1 POL(pairNs) = 0 POL(s(x_1)) = x_1 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: incr(cons(X, XS)) -> cons(s(X), incr(XS)) ---------------------------------------- (14) Obligation: Context-sensitive rewrite system: The TRS R consists of the following rules: oddNs -> incr(pairNs) The replacement map contains the following entries: pairNs: empty set incr: {1} oddNs: empty set ---------------------------------------- (15) CSRRRRProof (EQUIVALENT) The following CSR is given: Context-sensitive rewrite system: The TRS R consists of the following rules: oddNs -> incr(pairNs) The replacement map contains the following entries: pairNs: empty set incr: {1} oddNs: empty set Used ordering: Matrix interpretation [MATRO] to (N^2, +, *, >=, >) : <<< POL(oddNs) = [[1]] >>> <<< POL(incr(x_1)) = [[0]] + [[1, 1]] * x_1 >>> <<< POL(pairNs) = [[0], [0]] >>> With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: oddNs -> incr(pairNs) ---------------------------------------- (16) Obligation: Context-sensitive rewrite system: R is empty. ---------------------------------------- (17) RisEmptyProof (EQUIVALENT) The CSR R is empty. Hence, termination is trivially proven. ---------------------------------------- (18) YES