/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# AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty Termination w.r.t. Q of the given QTRS could be proven: (0) QTRS (1) QTRSToCSRProof [EQUIVALENT, 0 ms] (2) CSR (3) CSRRRRProof [EQUIVALENT, 92 ms] (4) CSR (5) CSRRRRProof [EQUIVALENT, 10 ms] (6) CSR (7) CSRRRRProof [EQUIVALENT, 0 ms] (8) CSR (9) CSRRRRProof [EQUIVALENT, 4 ms] (10) CSR (11) CSRRRRProof [EQUIVALENT, 12 ms] (12) CSR (13) CSRRRRProof [EQUIVALENT, 0 ms] (14) CSR (15) CSRRRRProof [EQUIVALENT, 14 ms] (16) CSR (17) CSRRRRProof [EQUIVALENT, 0 ms] (18) CSR (19) CSRRRRProof [EQUIVALENT, 0 ms] (20) CSR (21) CSRRRRProof [EQUIVALENT, 4 ms] (22) CSR (23) CSRRRRProof [EQUIVALENT, 0 ms] (24) CSR (25) CSRRRRProof [EQUIVALENT, 0 ms] (26) CSR (27) CSRRRRProof [EQUIVALENT, 0 ms] (28) CSR (29) RisEmptyProof [EQUIVALENT, 0 ms] (30) YES ---------------------------------------- (0) Obligation: Q restricted rewrite system: The TRS R consists of the following rules: active(__(__(X, Y), Z)) -> mark(__(X, __(Y, Z))) active(__(X, nil)) -> mark(X) active(__(nil, X)) -> mark(X) active(U11(tt, V)) -> mark(U12(isPalListKind(V), V)) active(U12(tt, V)) -> mark(U13(isNeList(V))) active(U13(tt)) -> mark(tt) active(U21(tt, V1, V2)) -> mark(U22(isPalListKind(V1), V1, V2)) active(U22(tt, V1, V2)) -> mark(U23(isPalListKind(V2), V1, V2)) active(U23(tt, V1, V2)) -> mark(U24(isPalListKind(V2), V1, V2)) active(U24(tt, V1, V2)) -> mark(U25(isList(V1), V2)) active(U25(tt, V2)) -> mark(U26(isList(V2))) active(U26(tt)) -> mark(tt) active(U31(tt, V)) -> mark(U32(isPalListKind(V), V)) active(U32(tt, V)) -> mark(U33(isQid(V))) active(U33(tt)) -> mark(tt) active(U41(tt, V1, V2)) -> mark(U42(isPalListKind(V1), V1, V2)) active(U42(tt, V1, V2)) -> mark(U43(isPalListKind(V2), V1, V2)) active(U43(tt, V1, V2)) -> mark(U44(isPalListKind(V2), V1, V2)) active(U44(tt, V1, V2)) -> mark(U45(isList(V1), V2)) active(U45(tt, V2)) -> mark(U46(isNeList(V2))) active(U46(tt)) -> mark(tt) active(U51(tt, V1, V2)) -> mark(U52(isPalListKind(V1), V1, V2)) active(U52(tt, V1, V2)) -> mark(U53(isPalListKind(V2), V1, V2)) active(U53(tt, V1, V2)) -> mark(U54(isPalListKind(V2), V1, V2)) active(U54(tt, V1, V2)) -> mark(U55(isNeList(V1), V2)) active(U55(tt, V2)) -> mark(U56(isList(V2))) active(U56(tt)) -> mark(tt) active(U61(tt, V)) -> mark(U62(isPalListKind(V), V)) active(U62(tt, V)) -> mark(U63(isQid(V))) active(U63(tt)) -> mark(tt) active(U71(tt, I, P)) -> mark(U72(isPalListKind(I), P)) active(U72(tt, P)) -> mark(U73(isPal(P), P)) active(U73(tt, P)) -> mark(U74(isPalListKind(P))) active(U74(tt)) -> mark(tt) active(U81(tt, V)) -> mark(U82(isPalListKind(V), V)) active(U82(tt, V)) -> mark(U83(isNePal(V))) active(U83(tt)) -> mark(tt) active(U91(tt, V2)) -> mark(U92(isPalListKind(V2))) active(U92(tt)) -> mark(tt) active(isList(V)) -> mark(U11(isPalListKind(V), V)) active(isList(nil)) -> mark(tt) active(isList(__(V1, V2))) -> mark(U21(isPalListKind(V1), V1, V2)) active(isNeList(V)) -> mark(U31(isPalListKind(V), V)) active(isNeList(__(V1, V2))) -> mark(U41(isPalListKind(V1), V1, V2)) active(isNeList(__(V1, V2))) -> mark(U51(isPalListKind(V1), V1, V2)) active(isNePal(V)) -> mark(U61(isPalListKind(V), V)) active(isNePal(__(I, __(P, I)))) -> mark(U71(isQid(I), I, P)) active(isPal(V)) -> mark(U81(isPalListKind(V), V)) active(isPal(nil)) -> mark(tt) active(isPalListKind(a)) -> mark(tt) active(isPalListKind(e)) -> mark(tt) active(isPalListKind(i)) -> mark(tt) active(isPalListKind(nil)) -> mark(tt) active(isPalListKind(o)) -> mark(tt) active(isPalListKind(u)) -> mark(tt) active(isPalListKind(__(V1, V2))) -> mark(U91(isPalListKind(V1), V2)) active(isQid(a)) -> mark(tt) active(isQid(e)) -> mark(tt) active(isQid(i)) -> mark(tt) active(isQid(o)) -> mark(tt) active(isQid(u)) -> mark(tt) active(__(X1, X2)) -> __(active(X1), X2) active(__(X1, X2)) -> __(X1, active(X2)) active(U11(X1, X2)) -> U11(active(X1), X2) active(U12(X1, X2)) -> U12(active(X1), X2) active(U13(X)) -> U13(active(X)) active(U21(X1, X2, X3)) -> U21(active(X1), X2, X3) active(U22(X1, X2, X3)) -> U22(active(X1), X2, X3) active(U23(X1, X2, X3)) -> U23(active(X1), X2, X3) active(U24(X1, X2, X3)) -> U24(active(X1), X2, X3) active(U25(X1, X2)) -> U25(active(X1), X2) active(U26(X)) -> U26(active(X)) active(U31(X1, X2)) -> U31(active(X1), X2) active(U32(X1, X2)) -> U32(active(X1), X2) active(U33(X)) -> U33(active(X)) active(U41(X1, X2, X3)) -> U41(active(X1), X2, X3) active(U42(X1, X2, X3)) -> U42(active(X1), X2, X3) active(U43(X1, X2, X3)) -> U43(active(X1), X2, X3) active(U44(X1, X2, X3)) -> U44(active(X1), X2, X3) active(U45(X1, X2)) -> U45(active(X1), X2) active(U46(X)) -> U46(active(X)) active(U51(X1, X2, X3)) -> U51(active(X1), X2, X3) active(U52(X1, X2, X3)) -> U52(active(X1), X2, X3) active(U53(X1, X2, X3)) -> U53(active(X1), X2, X3) active(U54(X1, X2, X3)) -> U54(active(X1), X2, X3) active(U55(X1, X2)) -> U55(active(X1), X2) active(U56(X)) -> U56(active(X)) active(U61(X1, X2)) -> U61(active(X1), X2) active(U62(X1, X2)) -> U62(active(X1), X2) active(U63(X)) -> U63(active(X)) active(U71(X1, X2, X3)) -> U71(active(X1), X2, X3) active(U72(X1, X2)) -> U72(active(X1), X2) active(U73(X1, X2)) -> U73(active(X1), X2) active(U74(X)) -> U74(active(X)) active(U81(X1, X2)) -> U81(active(X1), X2) active(U82(X1, X2)) -> U82(active(X1), X2) active(U83(X)) -> U83(active(X)) active(U91(X1, X2)) -> U91(active(X1), X2) active(U92(X)) -> U92(active(X)) __(mark(X1), X2) -> mark(__(X1, X2)) __(X1, mark(X2)) -> mark(__(X1, X2)) U11(mark(X1), X2) -> mark(U11(X1, X2)) U12(mark(X1), X2) -> mark(U12(X1, X2)) U13(mark(X)) -> mark(U13(X)) U21(mark(X1), X2, X3) -> mark(U21(X1, X2, X3)) U22(mark(X1), X2, X3) -> mark(U22(X1, X2, X3)) U23(mark(X1), X2, X3) -> mark(U23(X1, X2, X3)) U24(mark(X1), X2, X3) -> mark(U24(X1, X2, X3)) U25(mark(X1), X2) -> mark(U25(X1, X2)) U26(mark(X)) -> mark(U26(X)) U31(mark(X1), X2) -> mark(U31(X1, X2)) U32(mark(X1), X2) -> mark(U32(X1, X2)) U33(mark(X)) -> mark(U33(X)) U41(mark(X1), X2, X3) -> mark(U41(X1, X2, X3)) U42(mark(X1), X2, X3) -> mark(U42(X1, X2, X3)) U43(mark(X1), X2, X3) -> mark(U43(X1, X2, X3)) U44(mark(X1), X2, X3) -> mark(U44(X1, X2, X3)) U45(mark(X1), X2) -> mark(U45(X1, X2)) U46(mark(X)) -> mark(U46(X)) U51(mark(X1), X2, X3) -> mark(U51(X1, X2, X3)) U52(mark(X1), X2, X3) -> mark(U52(X1, X2, X3)) U53(mark(X1), X2, X3) -> mark(U53(X1, X2, X3)) U54(mark(X1), X2, X3) -> mark(U54(X1, X2, X3)) U55(mark(X1), X2) -> mark(U55(X1, X2)) U56(mark(X)) -> mark(U56(X)) U61(mark(X1), X2) -> mark(U61(X1, X2)) U62(mark(X1), X2) -> mark(U62(X1, X2)) U63(mark(X)) -> mark(U63(X)) U71(mark(X1), X2, X3) -> mark(U71(X1, X2, X3)) U72(mark(X1), X2) -> mark(U72(X1, X2)) U73(mark(X1), X2) -> mark(U73(X1, X2)) U74(mark(X)) -> mark(U74(X)) U81(mark(X1), X2) -> mark(U81(X1, X2)) U82(mark(X1), X2) -> mark(U82(X1, X2)) U83(mark(X)) -> mark(U83(X)) U91(mark(X1), X2) -> mark(U91(X1, X2)) U92(mark(X)) -> mark(U92(X)) proper(__(X1, X2)) -> __(proper(X1), proper(X2)) proper(nil) -> ok(nil) proper(U11(X1, X2)) -> U11(proper(X1), proper(X2)) proper(tt) -> ok(tt) proper(U12(X1, X2)) -> U12(proper(X1), proper(X2)) proper(isPalListKind(X)) -> isPalListKind(proper(X)) proper(U13(X)) -> U13(proper(X)) proper(isNeList(X)) -> isNeList(proper(X)) proper(U21(X1, X2, X3)) -> U21(proper(X1), proper(X2), proper(X3)) proper(U22(X1, X2, X3)) -> U22(proper(X1), proper(X2), proper(X3)) proper(U23(X1, X2, X3)) -> U23(proper(X1), proper(X2), proper(X3)) proper(U24(X1, X2, X3)) -> U24(proper(X1), proper(X2), proper(X3)) proper(U25(X1, X2)) -> U25(proper(X1), proper(X2)) proper(isList(X)) -> isList(proper(X)) proper(U26(X)) -> U26(proper(X)) proper(U31(X1, X2)) -> U31(proper(X1), proper(X2)) proper(U32(X1, X2)) -> U32(proper(X1), proper(X2)) proper(U33(X)) -> U33(proper(X)) proper(isQid(X)) -> isQid(proper(X)) proper(U41(X1, X2, X3)) -> U41(proper(X1), proper(X2), proper(X3)) proper(U42(X1, X2, X3)) -> U42(proper(X1), proper(X2), proper(X3)) proper(U43(X1, X2, X3)) -> U43(proper(X1), proper(X2), proper(X3)) proper(U44(X1, X2, X3)) -> U44(proper(X1), proper(X2), proper(X3)) proper(U45(X1, X2)) -> U45(proper(X1), proper(X2)) proper(U46(X)) -> U46(proper(X)) proper(U51(X1, X2, X3)) -> U51(proper(X1), proper(X2), proper(X3)) proper(U52(X1, X2, X3)) -> U52(proper(X1), proper(X2), proper(X3)) proper(U53(X1, X2, X3)) -> U53(proper(X1), proper(X2), proper(X3)) proper(U54(X1, X2, X3)) -> U54(proper(X1), proper(X2), proper(X3)) proper(U55(X1, X2)) -> U55(proper(X1), proper(X2)) proper(U56(X)) -> U56(proper(X)) proper(U61(X1, X2)) -> U61(proper(X1), proper(X2)) proper(U62(X1, X2)) -> U62(proper(X1), proper(X2)) proper(U63(X)) -> U63(proper(X)) proper(U71(X1, X2, X3)) -> U71(proper(X1), proper(X2), proper(X3)) proper(U72(X1, X2)) -> U72(proper(X1), proper(X2)) proper(U73(X1, X2)) -> U73(proper(X1), proper(X2)) proper(isPal(X)) -> isPal(proper(X)) proper(U74(X)) -> U74(proper(X)) proper(U81(X1, X2)) -> U81(proper(X1), proper(X2)) proper(U82(X1, X2)) -> U82(proper(X1), proper(X2)) proper(U83(X)) -> U83(proper(X)) proper(isNePal(X)) -> isNePal(proper(X)) proper(U91(X1, X2)) -> U91(proper(X1), proper(X2)) proper(U92(X)) -> U92(proper(X)) proper(a) -> ok(a) proper(e) -> ok(e) proper(i) -> ok(i) proper(o) -> ok(o) proper(u) -> ok(u) __(ok(X1), ok(X2)) -> ok(__(X1, X2)) U11(ok(X1), ok(X2)) -> ok(U11(X1, X2)) U12(ok(X1), ok(X2)) -> ok(U12(X1, X2)) isPalListKind(ok(X)) -> ok(isPalListKind(X)) U13(ok(X)) -> ok(U13(X)) isNeList(ok(X)) -> ok(isNeList(X)) U21(ok(X1), ok(X2), ok(X3)) -> ok(U21(X1, X2, X3)) U22(ok(X1), ok(X2), ok(X3)) -> ok(U22(X1, X2, X3)) U23(ok(X1), ok(X2), ok(X3)) -> ok(U23(X1, X2, X3)) U24(ok(X1), ok(X2), ok(X3)) -> ok(U24(X1, X2, X3)) U25(ok(X1), ok(X2)) -> ok(U25(X1, X2)) isList(ok(X)) -> ok(isList(X)) U26(ok(X)) -> ok(U26(X)) U31(ok(X1), ok(X2)) -> ok(U31(X1, X2)) U32(ok(X1), ok(X2)) -> ok(U32(X1, X2)) U33(ok(X)) -> ok(U33(X)) isQid(ok(X)) -> ok(isQid(X)) U41(ok(X1), ok(X2), ok(X3)) -> ok(U41(X1, X2, X3)) U42(ok(X1), ok(X2), ok(X3)) -> ok(U42(X1, X2, X3)) U43(ok(X1), ok(X2), ok(X3)) -> ok(U43(X1, X2, X3)) U44(ok(X1), ok(X2), ok(X3)) -> ok(U44(X1, X2, X3)) U45(ok(X1), ok(X2)) -> ok(U45(X1, X2)) U46(ok(X)) -> ok(U46(X)) U51(ok(X1), ok(X2), ok(X3)) -> ok(U51(X1, X2, X3)) U52(ok(X1), ok(X2), ok(X3)) -> ok(U52(X1, X2, X3)) U53(ok(X1), ok(X2), ok(X3)) -> ok(U53(X1, X2, X3)) U54(ok(X1), ok(X2), ok(X3)) -> ok(U54(X1, X2, X3)) U55(ok(X1), ok(X2)) -> ok(U55(X1, X2)) U56(ok(X)) -> ok(U56(X)) U61(ok(X1), ok(X2)) -> ok(U61(X1, X2)) U62(ok(X1), ok(X2)) -> ok(U62(X1, X2)) U63(ok(X)) -> ok(U63(X)) U71(ok(X1), ok(X2), ok(X3)) -> ok(U71(X1, X2, X3)) U72(ok(X1), ok(X2)) -> ok(U72(X1, X2)) U73(ok(X1), ok(X2)) -> ok(U73(X1, X2)) isPal(ok(X)) -> ok(isPal(X)) U74(ok(X)) -> ok(U74(X)) U81(ok(X1), ok(X2)) -> ok(U81(X1, X2)) U82(ok(X1), ok(X2)) -> ok(U82(X1, X2)) U83(ok(X)) -> ok(U83(X)) isNePal(ok(X)) -> ok(isNePal(X)) U91(ok(X1), ok(X2)) -> ok(U91(X1, X2)) U92(ok(X)) -> ok(U92(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(__(__(X, Y), Z)) -> mark(__(X, __(Y, Z))) active(__(X, nil)) -> mark(X) active(__(nil, X)) -> mark(X) active(U11(tt, V)) -> mark(U12(isPalListKind(V), V)) active(U12(tt, V)) -> mark(U13(isNeList(V))) active(U13(tt)) -> mark(tt) active(U21(tt, V1, V2)) -> mark(U22(isPalListKind(V1), V1, V2)) active(U22(tt, V1, V2)) -> mark(U23(isPalListKind(V2), V1, V2)) active(U23(tt, V1, V2)) -> mark(U24(isPalListKind(V2), V1, V2)) active(U24(tt, V1, V2)) -> mark(U25(isList(V1), V2)) active(U25(tt, V2)) -> mark(U26(isList(V2))) active(U26(tt)) -> mark(tt) active(U31(tt, V)) -> mark(U32(isPalListKind(V), V)) active(U32(tt, V)) -> mark(U33(isQid(V))) active(U33(tt)) -> mark(tt) active(U41(tt, V1, V2)) -> mark(U42(isPalListKind(V1), V1, V2)) active(U42(tt, V1, V2)) -> mark(U43(isPalListKind(V2), V1, V2)) active(U43(tt, V1, V2)) -> mark(U44(isPalListKind(V2), V1, V2)) active(U44(tt, V1, V2)) -> mark(U45(isList(V1), V2)) active(U45(tt, V2)) -> mark(U46(isNeList(V2))) active(U46(tt)) -> mark(tt) active(U51(tt, V1, V2)) -> mark(U52(isPalListKind(V1), V1, V2)) active(U52(tt, V1, V2)) -> mark(U53(isPalListKind(V2), V1, V2)) active(U53(tt, V1, V2)) -> mark(U54(isPalListKind(V2), V1, V2)) active(U54(tt, V1, V2)) -> mark(U55(isNeList(V1), V2)) active(U55(tt, V2)) -> mark(U56(isList(V2))) active(U56(tt)) -> mark(tt) active(U61(tt, V)) -> mark(U62(isPalListKind(V), V)) active(U62(tt, V)) -> mark(U63(isQid(V))) active(U63(tt)) -> mark(tt) active(U71(tt, I, P)) -> mark(U72(isPalListKind(I), P)) active(U72(tt, P)) -> mark(U73(isPal(P), P)) active(U73(tt, P)) -> mark(U74(isPalListKind(P))) active(U74(tt)) -> mark(tt) active(U81(tt, V)) -> mark(U82(isPalListKind(V), V)) active(U82(tt, V)) -> mark(U83(isNePal(V))) active(U83(tt)) -> mark(tt) active(U91(tt, V2)) -> mark(U92(isPalListKind(V2))) active(U92(tt)) -> mark(tt) active(isList(V)) -> mark(U11(isPalListKind(V), V)) active(isList(nil)) -> mark(tt) active(isList(__(V1, V2))) -> mark(U21(isPalListKind(V1), V1, V2)) active(isNeList(V)) -> mark(U31(isPalListKind(V), V)) active(isNeList(__(V1, V2))) -> mark(U41(isPalListKind(V1), V1, V2)) active(isNeList(__(V1, V2))) -> mark(U51(isPalListKind(V1), V1, V2)) active(isNePal(V)) -> mark(U61(isPalListKind(V), V)) active(isNePal(__(I, __(P, I)))) -> mark(U71(isQid(I), I, P)) active(isPal(V)) -> mark(U81(isPalListKind(V), V)) active(isPal(nil)) -> mark(tt) active(isPalListKind(a)) -> mark(tt) active(isPalListKind(e)) -> mark(tt) active(isPalListKind(i)) -> mark(tt) active(isPalListKind(nil)) -> mark(tt) active(isPalListKind(o)) -> mark(tt) active(isPalListKind(u)) -> mark(tt) active(isPalListKind(__(V1, V2))) -> mark(U91(isPalListKind(V1), V2)) active(isQid(a)) -> mark(tt) active(isQid(e)) -> mark(tt) active(isQid(i)) -> mark(tt) active(isQid(o)) -> mark(tt) active(isQid(u)) -> mark(tt) active(__(X1, X2)) -> __(active(X1), X2) active(__(X1, X2)) -> __(X1, active(X2)) active(U11(X1, X2)) -> U11(active(X1), X2) active(U12(X1, X2)) -> U12(active(X1), X2) active(U13(X)) -> U13(active(X)) active(U21(X1, X2, X3)) -> U21(active(X1), X2, X3) active(U22(X1, X2, X3)) -> U22(active(X1), X2, X3) active(U23(X1, X2, X3)) -> U23(active(X1), X2, X3) active(U24(X1, X2, X3)) -> U24(active(X1), X2, X3) active(U25(X1, X2)) -> U25(active(X1), X2) active(U26(X)) -> U26(active(X)) active(U31(X1, X2)) -> U31(active(X1), X2) active(U32(X1, X2)) -> U32(active(X1), X2) active(U33(X)) -> U33(active(X)) active(U41(X1, X2, X3)) -> U41(active(X1), X2, X3) active(U42(X1, X2, X3)) -> U42(active(X1), X2, X3) active(U43(X1, X2, X3)) -> U43(active(X1), X2, X3) active(U44(X1, X2, X3)) -> U44(active(X1), X2, X3) active(U45(X1, X2)) -> U45(active(X1), X2) active(U46(X)) -> U46(active(X)) active(U51(X1, X2, X3)) -> U51(active(X1), X2, X3) active(U52(X1, X2, X3)) -> U52(active(X1), X2, X3) active(U53(X1, X2, X3)) -> U53(active(X1), X2, X3) active(U54(X1, X2, X3)) -> U54(active(X1), X2, X3) active(U55(X1, X2)) -> U55(active(X1), X2) active(U56(X)) -> U56(active(X)) active(U61(X1, X2)) -> U61(active(X1), X2) active(U62(X1, X2)) -> U62(active(X1), X2) active(U63(X)) -> U63(active(X)) active(U71(X1, X2, X3)) -> U71(active(X1), X2, X3) active(U72(X1, X2)) -> U72(active(X1), X2) active(U73(X1, X2)) -> U73(active(X1), X2) active(U74(X)) -> U74(active(X)) active(U81(X1, X2)) -> U81(active(X1), X2) active(U82(X1, X2)) -> U82(active(X1), X2) active(U83(X)) -> U83(active(X)) active(U91(X1, X2)) -> U91(active(X1), X2) active(U92(X)) -> U92(active(X)) __(mark(X1), X2) -> mark(__(X1, X2)) __(X1, mark(X2)) -> mark(__(X1, X2)) U11(mark(X1), X2) -> mark(U11(X1, X2)) U12(mark(X1), X2) -> mark(U12(X1, X2)) U13(mark(X)) -> mark(U13(X)) U21(mark(X1), X2, X3) -> mark(U21(X1, X2, X3)) U22(mark(X1), X2, X3) -> mark(U22(X1, X2, X3)) U23(mark(X1), X2, X3) -> mark(U23(X1, X2, X3)) U24(mark(X1), X2, X3) -> mark(U24(X1, X2, X3)) U25(mark(X1), X2) -> mark(U25(X1, X2)) U26(mark(X)) -> mark(U26(X)) U31(mark(X1), X2) -> mark(U31(X1, X2)) U32(mark(X1), X2) -> mark(U32(X1, X2)) U33(mark(X)) -> mark(U33(X)) U41(mark(X1), X2, X3) -> mark(U41(X1, X2, X3)) U42(mark(X1), X2, X3) -> mark(U42(X1, X2, X3)) U43(mark(X1), X2, X3) -> mark(U43(X1, X2, X3)) U44(mark(X1), X2, X3) -> mark(U44(X1, X2, X3)) U45(mark(X1), X2) -> mark(U45(X1, X2)) U46(mark(X)) -> mark(U46(X)) U51(mark(X1), X2, X3) -> mark(U51(X1, X2, X3)) U52(mark(X1), X2, X3) -> mark(U52(X1, X2, X3)) U53(mark(X1), X2, X3) -> mark(U53(X1, X2, X3)) U54(mark(X1), X2, X3) -> mark(U54(X1, X2, X3)) U55(mark(X1), X2) -> mark(U55(X1, X2)) U56(mark(X)) -> mark(U56(X)) U61(mark(X1), X2) -> mark(U61(X1, X2)) U62(mark(X1), X2) -> mark(U62(X1, X2)) U63(mark(X)) -> mark(U63(X)) U71(mark(X1), X2, X3) -> mark(U71(X1, X2, X3)) U72(mark(X1), X2) -> mark(U72(X1, X2)) U73(mark(X1), X2) -> mark(U73(X1, X2)) U74(mark(X)) -> mark(U74(X)) U81(mark(X1), X2) -> mark(U81(X1, X2)) U82(mark(X1), X2) -> mark(U82(X1, X2)) U83(mark(X)) -> mark(U83(X)) U91(mark(X1), X2) -> mark(U91(X1, X2)) U92(mark(X)) -> mark(U92(X)) proper(__(X1, X2)) -> __(proper(X1), proper(X2)) proper(nil) -> ok(nil) proper(U11(X1, X2)) -> U11(proper(X1), proper(X2)) proper(tt) -> ok(tt) proper(U12(X1, X2)) -> U12(proper(X1), proper(X2)) proper(isPalListKind(X)) -> isPalListKind(proper(X)) proper(U13(X)) -> U13(proper(X)) proper(isNeList(X)) -> isNeList(proper(X)) proper(U21(X1, X2, X3)) -> U21(proper(X1), proper(X2), proper(X3)) proper(U22(X1, X2, X3)) -> U22(proper(X1), proper(X2), proper(X3)) proper(U23(X1, X2, X3)) -> U23(proper(X1), proper(X2), proper(X3)) proper(U24(X1, X2, X3)) -> U24(proper(X1), proper(X2), proper(X3)) proper(U25(X1, X2)) -> U25(proper(X1), proper(X2)) proper(isList(X)) -> isList(proper(X)) proper(U26(X)) -> U26(proper(X)) proper(U31(X1, X2)) -> U31(proper(X1), proper(X2)) proper(U32(X1, X2)) -> U32(proper(X1), proper(X2)) proper(U33(X)) -> U33(proper(X)) proper(isQid(X)) -> isQid(proper(X)) proper(U41(X1, X2, X3)) -> U41(proper(X1), proper(X2), proper(X3)) proper(U42(X1, X2, X3)) -> U42(proper(X1), proper(X2), proper(X3)) proper(U43(X1, X2, X3)) -> U43(proper(X1), proper(X2), proper(X3)) proper(U44(X1, X2, X3)) -> U44(proper(X1), proper(X2), proper(X3)) proper(U45(X1, X2)) -> U45(proper(X1), proper(X2)) proper(U46(X)) -> U46(proper(X)) proper(U51(X1, X2, X3)) -> U51(proper(X1), proper(X2), proper(X3)) proper(U52(X1, X2, X3)) -> U52(proper(X1), proper(X2), proper(X3)) proper(U53(X1, X2, X3)) -> U53(proper(X1), proper(X2), proper(X3)) proper(U54(X1, X2, X3)) -> U54(proper(X1), proper(X2), proper(X3)) proper(U55(X1, X2)) -> U55(proper(X1), proper(X2)) proper(U56(X)) -> U56(proper(X)) proper(U61(X1, X2)) -> U61(proper(X1), proper(X2)) proper(U62(X1, X2)) -> U62(proper(X1), proper(X2)) proper(U63(X)) -> U63(proper(X)) proper(U71(X1, X2, X3)) -> U71(proper(X1), proper(X2), proper(X3)) proper(U72(X1, X2)) -> U72(proper(X1), proper(X2)) proper(U73(X1, X2)) -> U73(proper(X1), proper(X2)) proper(isPal(X)) -> isPal(proper(X)) proper(U74(X)) -> U74(proper(X)) proper(U81(X1, X2)) -> U81(proper(X1), proper(X2)) proper(U82(X1, X2)) -> U82(proper(X1), proper(X2)) proper(U83(X)) -> U83(proper(X)) proper(isNePal(X)) -> isNePal(proper(X)) proper(U91(X1, X2)) -> U91(proper(X1), proper(X2)) proper(U92(X)) -> U92(proper(X)) proper(a) -> ok(a) proper(e) -> ok(e) proper(i) -> ok(i) proper(o) -> ok(o) proper(u) -> ok(u) __(ok(X1), ok(X2)) -> ok(__(X1, X2)) U11(ok(X1), ok(X2)) -> ok(U11(X1, X2)) U12(ok(X1), ok(X2)) -> ok(U12(X1, X2)) isPalListKind(ok(X)) -> ok(isPalListKind(X)) U13(ok(X)) -> ok(U13(X)) isNeList(ok(X)) -> ok(isNeList(X)) U21(ok(X1), ok(X2), ok(X3)) -> ok(U21(X1, X2, X3)) U22(ok(X1), ok(X2), ok(X3)) -> ok(U22(X1, X2, X3)) U23(ok(X1), ok(X2), ok(X3)) -> ok(U23(X1, X2, X3)) U24(ok(X1), ok(X2), ok(X3)) -> ok(U24(X1, X2, X3)) U25(ok(X1), ok(X2)) -> ok(U25(X1, X2)) isList(ok(X)) -> ok(isList(X)) U26(ok(X)) -> ok(U26(X)) U31(ok(X1), ok(X2)) -> ok(U31(X1, X2)) U32(ok(X1), ok(X2)) -> ok(U32(X1, X2)) U33(ok(X)) -> ok(U33(X)) isQid(ok(X)) -> ok(isQid(X)) U41(ok(X1), ok(X2), ok(X3)) -> ok(U41(X1, X2, X3)) U42(ok(X1), ok(X2), ok(X3)) -> ok(U42(X1, X2, X3)) U43(ok(X1), ok(X2), ok(X3)) -> ok(U43(X1, X2, X3)) U44(ok(X1), ok(X2), ok(X3)) -> ok(U44(X1, X2, X3)) U45(ok(X1), ok(X2)) -> ok(U45(X1, X2)) U46(ok(X)) -> ok(U46(X)) U51(ok(X1), ok(X2), ok(X3)) -> ok(U51(X1, X2, X3)) U52(ok(X1), ok(X2), ok(X3)) -> ok(U52(X1, X2, X3)) U53(ok(X1), ok(X2), ok(X3)) -> ok(U53(X1, X2, X3)) U54(ok(X1), ok(X2), ok(X3)) -> ok(U54(X1, X2, X3)) U55(ok(X1), ok(X2)) -> ok(U55(X1, X2)) U56(ok(X)) -> ok(U56(X)) U61(ok(X1), ok(X2)) -> ok(U61(X1, X2)) U62(ok(X1), ok(X2)) -> ok(U62(X1, X2)) U63(ok(X)) -> ok(U63(X)) U71(ok(X1), ok(X2), ok(X3)) -> ok(U71(X1, X2, X3)) U72(ok(X1), ok(X2)) -> ok(U72(X1, X2)) U73(ok(X1), ok(X2)) -> ok(U73(X1, X2)) isPal(ok(X)) -> ok(isPal(X)) U74(ok(X)) -> ok(U74(X)) U81(ok(X1), ok(X2)) -> ok(U81(X1, X2)) U82(ok(X1), ok(X2)) -> ok(U82(X1, X2)) U83(ok(X)) -> ok(U83(X)) isNePal(ok(X)) -> ok(isNePal(X)) U91(ok(X1), ok(X2)) -> ok(U91(X1, X2)) U92(ok(X)) -> ok(U92(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: __: {1, 2} nil: empty set U11: {1} tt: empty set U12: {1} isPalListKind: empty set U13: {1} isNeList: empty set U21: {1} U22: {1} U23: {1} U24: {1} U25: {1} isList: empty set U26: {1} U31: {1} U32: {1} U33: {1} isQid: empty set U41: {1} U42: {1} U43: {1} U44: {1} U45: {1} U46: {1} U51: {1} U52: {1} U53: {1} U54: {1} U55: {1} U56: {1} U61: {1} U62: {1} U63: {1} U71: {1} U72: {1} U73: {1} isPal: empty set U74: {1} U81: {1} U82: {1} U83: {1} isNePal: empty set U91: {1} U92: {1} a: empty set e: empty set i: empty set o: empty set u: empty set 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: __(__(X, Y), Z) -> __(X, __(Y, Z)) __(X, nil) -> X __(nil, X) -> X U11(tt, V) -> U12(isPalListKind(V), V) U12(tt, V) -> U13(isNeList(V)) U13(tt) -> tt U21(tt, V1, V2) -> U22(isPalListKind(V1), V1, V2) U22(tt, V1, V2) -> U23(isPalListKind(V2), V1, V2) U23(tt, V1, V2) -> U24(isPalListKind(V2), V1, V2) U24(tt, V1, V2) -> U25(isList(V1), V2) U25(tt, V2) -> U26(isList(V2)) U26(tt) -> tt U31(tt, V) -> U32(isPalListKind(V), V) U32(tt, V) -> U33(isQid(V)) U33(tt) -> tt U41(tt, V1, V2) -> U42(isPalListKind(V1), V1, V2) U42(tt, V1, V2) -> U43(isPalListKind(V2), V1, V2) U43(tt, V1, V2) -> U44(isPalListKind(V2), V1, V2) U44(tt, V1, V2) -> U45(isList(V1), V2) U45(tt, V2) -> U46(isNeList(V2)) U46(tt) -> tt U51(tt, V1, V2) -> U52(isPalListKind(V1), V1, V2) U52(tt, V1, V2) -> U53(isPalListKind(V2), V1, V2) U53(tt, V1, V2) -> U54(isPalListKind(V2), V1, V2) U54(tt, V1, V2) -> U55(isNeList(V1), V2) U55(tt, V2) -> U56(isList(V2)) U56(tt) -> tt U61(tt, V) -> U62(isPalListKind(V), V) U62(tt, V) -> U63(isQid(V)) U63(tt) -> tt U71(tt, I, P) -> U72(isPalListKind(I), P) U72(tt, P) -> U73(isPal(P), P) U73(tt, P) -> U74(isPalListKind(P)) U74(tt) -> tt U81(tt, V) -> U82(isPalListKind(V), V) U82(tt, V) -> U83(isNePal(V)) U83(tt) -> tt U91(tt, V2) -> U92(isPalListKind(V2)) U92(tt) -> tt isList(V) -> U11(isPalListKind(V), V) isList(nil) -> tt isList(__(V1, V2)) -> U21(isPalListKind(V1), V1, V2) isNeList(V) -> U31(isPalListKind(V), V) isNeList(__(V1, V2)) -> U41(isPalListKind(V1), V1, V2) isNeList(__(V1, V2)) -> U51(isPalListKind(V1), V1, V2) isNePal(V) -> U61(isPalListKind(V), V) isNePal(__(I, __(P, I))) -> U71(isQid(I), I, P) isPal(V) -> U81(isPalListKind(V), V) isPal(nil) -> tt isPalListKind(a) -> tt isPalListKind(e) -> tt isPalListKind(i) -> tt isPalListKind(nil) -> tt isPalListKind(o) -> tt isPalListKind(u) -> tt isPalListKind(__(V1, V2)) -> U91(isPalListKind(V1), V2) isQid(a) -> tt isQid(e) -> tt isQid(i) -> tt isQid(o) -> tt isQid(u) -> tt The replacement map contains the following entries: __: {1, 2} nil: empty set U11: {1} tt: empty set U12: {1} isPalListKind: empty set U13: {1} isNeList: empty set U21: {1} U22: {1} U23: {1} U24: {1} U25: {1} isList: empty set U26: {1} U31: {1} U32: {1} U33: {1} isQid: empty set U41: {1} U42: {1} U43: {1} U44: {1} U45: {1} U46: {1} U51: {1} U52: {1} U53: {1} U54: {1} U55: {1} U56: {1} U61: {1} U62: {1} U63: {1} U71: {1} U72: {1} U73: {1} isPal: empty set U74: {1} U81: {1} U82: {1} U83: {1} isNePal: empty set U91: {1} U92: {1} a: empty set e: empty set i: empty set o: empty set u: empty set ---------------------------------------- (3) CSRRRRProof (EQUIVALENT) The following CSR is given: Context-sensitive rewrite system: The TRS R consists of the following rules: __(__(X, Y), Z) -> __(X, __(Y, Z)) __(X, nil) -> X __(nil, X) -> X U11(tt, V) -> U12(isPalListKind(V), V) U12(tt, V) -> U13(isNeList(V)) U13(tt) -> tt U21(tt, V1, V2) -> U22(isPalListKind(V1), V1, V2) U22(tt, V1, V2) -> U23(isPalListKind(V2), V1, V2) U23(tt, V1, V2) -> U24(isPalListKind(V2), V1, V2) U24(tt, V1, V2) -> U25(isList(V1), V2) U25(tt, V2) -> U26(isList(V2)) U26(tt) -> tt U31(tt, V) -> U32(isPalListKind(V), V) U32(tt, V) -> U33(isQid(V)) U33(tt) -> tt U41(tt, V1, V2) -> U42(isPalListKind(V1), V1, V2) U42(tt, V1, V2) -> U43(isPalListKind(V2), V1, V2) U43(tt, V1, V2) -> U44(isPalListKind(V2), V1, V2) U44(tt, V1, V2) -> U45(isList(V1), V2) U45(tt, V2) -> U46(isNeList(V2)) U46(tt) -> tt U51(tt, V1, V2) -> U52(isPalListKind(V1), V1, V2) U52(tt, V1, V2) -> U53(isPalListKind(V2), V1, V2) U53(tt, V1, V2) -> U54(isPalListKind(V2), V1, V2) U54(tt, V1, V2) -> U55(isNeList(V1), V2) U55(tt, V2) -> U56(isList(V2)) U56(tt) -> tt U61(tt, V) -> U62(isPalListKind(V), V) U62(tt, V) -> U63(isQid(V)) U63(tt) -> tt U71(tt, I, P) -> U72(isPalListKind(I), P) U72(tt, P) -> U73(isPal(P), P) U73(tt, P) -> U74(isPalListKind(P)) U74(tt) -> tt U81(tt, V) -> U82(isPalListKind(V), V) U82(tt, V) -> U83(isNePal(V)) U83(tt) -> tt U91(tt, V2) -> U92(isPalListKind(V2)) U92(tt) -> tt isList(V) -> U11(isPalListKind(V), V) isList(nil) -> tt isList(__(V1, V2)) -> U21(isPalListKind(V1), V1, V2) isNeList(V) -> U31(isPalListKind(V), V) isNeList(__(V1, V2)) -> U41(isPalListKind(V1), V1, V2) isNeList(__(V1, V2)) -> U51(isPalListKind(V1), V1, V2) isNePal(V) -> U61(isPalListKind(V), V) isNePal(__(I, __(P, I))) -> U71(isQid(I), I, P) isPal(V) -> U81(isPalListKind(V), V) isPal(nil) -> tt isPalListKind(a) -> tt isPalListKind(e) -> tt isPalListKind(i) -> tt isPalListKind(nil) -> tt isPalListKind(o) -> tt isPalListKind(u) -> tt isPalListKind(__(V1, V2)) -> U91(isPalListKind(V1), V2) isQid(a) -> tt isQid(e) -> tt isQid(i) -> tt isQid(o) -> tt isQid(u) -> tt The replacement map contains the following entries: __: {1, 2} nil: empty set U11: {1} tt: empty set U12: {1} isPalListKind: empty set U13: {1} isNeList: empty set U21: {1} U22: {1} U23: {1} U24: {1} U25: {1} isList: empty set U26: {1} U31: {1} U32: {1} U33: {1} isQid: empty set U41: {1} U42: {1} U43: {1} U44: {1} U45: {1} U46: {1} U51: {1} U52: {1} U53: {1} U54: {1} U55: {1} U56: {1} U61: {1} U62: {1} U63: {1} U71: {1} U72: {1} U73: {1} isPal: empty set U74: {1} U81: {1} U82: {1} U83: {1} isNePal: empty set U91: {1} U92: {1} a: empty set e: empty set i: empty set o: empty set u: empty set Used ordering: Polynomial interpretation [POLO]: POL(U11(x_1, x_2)) = x_1 + x_2 POL(U12(x_1, x_2)) = x_1 + x_2 POL(U13(x_1)) = x_1 POL(U21(x_1, x_2, x_3)) = 1 + x_1 + x_2 + x_3 POL(U22(x_1, x_2, x_3)) = 1 + x_1 + x_2 + x_3 POL(U23(x_1, x_2, x_3)) = 1 + x_1 + x_2 + x_3 POL(U24(x_1, x_2, x_3)) = 1 + x_1 + x_2 + x_3 POL(U25(x_1, x_2)) = 1 + x_1 + x_2 POL(U26(x_1)) = x_1 POL(U31(x_1, x_2)) = x_1 + x_2 POL(U32(x_1, x_2)) = x_1 + x_2 POL(U33(x_1)) = x_1 POL(U41(x_1, x_2, x_3)) = 1 + x_1 + x_2 + x_3 POL(U42(x_1, x_2, x_3)) = x_1 + x_2 + x_3 POL(U43(x_1, x_2, x_3)) = x_1 + x_2 + x_3 POL(U44(x_1, x_2, x_3)) = x_1 + x_2 + x_3 POL(U45(x_1, x_2)) = x_1 + x_2 POL(U46(x_1)) = x_1 POL(U51(x_1, x_2, x_3)) = x_1 + x_2 + x_3 POL(U52(x_1, x_2, x_3)) = x_1 + x_2 + x_3 POL(U53(x_1, x_2, x_3)) = x_1 + x_2 + x_3 POL(U54(x_1, x_2, x_3)) = x_1 + x_2 + x_3 POL(U55(x_1, x_2)) = x_1 + x_2 POL(U56(x_1)) = x_1 POL(U61(x_1, x_2)) = x_1 + x_2 POL(U62(x_1, x_2)) = x_1 + x_2 POL(U63(x_1)) = x_1 POL(U71(x_1, x_2, x_3)) = 1 + x_1 + x_3 POL(U72(x_1, x_2)) = x_1 + x_2 POL(U73(x_1, x_2)) = x_1 POL(U74(x_1)) = x_1 POL(U81(x_1, x_2)) = x_1 + x_2 POL(U82(x_1, x_2)) = x_1 + x_2 POL(U83(x_1)) = x_1 POL(U91(x_1, x_2)) = x_1 POL(U92(x_1)) = x_1 POL(__(x_1, x_2)) = 1 + x_1 + x_2 POL(a) = 1 POL(e) = 1 POL(i) = 1 POL(isList(x_1)) = x_1 POL(isNeList(x_1)) = x_1 POL(isNePal(x_1)) = x_1 POL(isPal(x_1)) = x_1 POL(isPalListKind(x_1)) = 0 POL(isQid(x_1)) = x_1 POL(nil) = 1 POL(o) = 1 POL(tt) = 0 POL(u) = 1 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: __(X, nil) -> X __(nil, X) -> X U25(tt, V2) -> U26(isList(V2)) U41(tt, V1, V2) -> U42(isPalListKind(V1), V1, V2) U71(tt, I, P) -> U72(isPalListKind(I), P) isList(nil) -> tt isNeList(__(V1, V2)) -> U51(isPalListKind(V1), V1, V2) isNePal(__(I, __(P, I))) -> U71(isQid(I), I, P) isPal(nil) -> tt isQid(a) -> tt isQid(e) -> tt isQid(i) -> tt isQid(o) -> tt isQid(u) -> tt ---------------------------------------- (4) Obligation: Context-sensitive rewrite system: The TRS R consists of the following rules: __(__(X, Y), Z) -> __(X, __(Y, Z)) U11(tt, V) -> U12(isPalListKind(V), V) U12(tt, V) -> U13(isNeList(V)) U13(tt) -> tt U21(tt, V1, V2) -> U22(isPalListKind(V1), V1, V2) U22(tt, V1, V2) -> U23(isPalListKind(V2), V1, V2) U23(tt, V1, V2) -> U24(isPalListKind(V2), V1, V2) U24(tt, V1, V2) -> U25(isList(V1), V2) U26(tt) -> tt U31(tt, V) -> U32(isPalListKind(V), V) U32(tt, V) -> U33(isQid(V)) U33(tt) -> tt U42(tt, V1, V2) -> U43(isPalListKind(V2), V1, V2) U43(tt, V1, V2) -> U44(isPalListKind(V2), V1, V2) U44(tt, V1, V2) -> U45(isList(V1), V2) U45(tt, V2) -> U46(isNeList(V2)) U46(tt) -> tt U51(tt, V1, V2) -> U52(isPalListKind(V1), V1, V2) U52(tt, V1, V2) -> U53(isPalListKind(V2), V1, V2) U53(tt, V1, V2) -> U54(isPalListKind(V2), V1, V2) U54(tt, V1, V2) -> U55(isNeList(V1), V2) U55(tt, V2) -> U56(isList(V2)) U56(tt) -> tt U61(tt, V) -> U62(isPalListKind(V), V) U62(tt, V) -> U63(isQid(V)) U63(tt) -> tt U72(tt, P) -> U73(isPal(P), P) U73(tt, P) -> U74(isPalListKind(P)) U74(tt) -> tt U81(tt, V) -> U82(isPalListKind(V), V) U82(tt, V) -> U83(isNePal(V)) U83(tt) -> tt U91(tt, V2) -> U92(isPalListKind(V2)) U92(tt) -> tt isList(V) -> U11(isPalListKind(V), V) isList(__(V1, V2)) -> U21(isPalListKind(V1), V1, V2) isNeList(V) -> U31(isPalListKind(V), V) isNeList(__(V1, V2)) -> U41(isPalListKind(V1), V1, V2) isNePal(V) -> U61(isPalListKind(V), V) isPal(V) -> U81(isPalListKind(V), V) isPalListKind(a) -> tt isPalListKind(e) -> tt isPalListKind(i) -> tt isPalListKind(nil) -> tt isPalListKind(o) -> tt isPalListKind(u) -> tt isPalListKind(__(V1, V2)) -> U91(isPalListKind(V1), V2) The replacement map contains the following entries: __: {1, 2} nil: empty set U11: {1} tt: empty set U12: {1} isPalListKind: empty set U13: {1} isNeList: empty set U21: {1} U22: {1} U23: {1} U24: {1} U25: {1} isList: empty set U26: {1} U31: {1} U32: {1} U33: {1} isQid: empty set U41: {1} U42: {1} U43: {1} U44: {1} U45: {1} U46: {1} U51: {1} U52: {1} U53: {1} U54: {1} U55: {1} U56: {1} U61: {1} U62: {1} U63: {1} U72: {1} U73: {1} isPal: empty set U74: {1} U81: {1} U82: {1} U83: {1} isNePal: empty set U91: {1} U92: {1} a: empty set e: empty set i: empty set o: empty set u: empty set ---------------------------------------- (5) CSRRRRProof (EQUIVALENT) The following CSR is given: Context-sensitive rewrite system: The TRS R consists of the following rules: __(__(X, Y), Z) -> __(X, __(Y, Z)) U11(tt, V) -> U12(isPalListKind(V), V) U12(tt, V) -> U13(isNeList(V)) U13(tt) -> tt U21(tt, V1, V2) -> U22(isPalListKind(V1), V1, V2) U22(tt, V1, V2) -> U23(isPalListKind(V2), V1, V2) U23(tt, V1, V2) -> U24(isPalListKind(V2), V1, V2) U24(tt, V1, V2) -> U25(isList(V1), V2) U26(tt) -> tt U31(tt, V) -> U32(isPalListKind(V), V) U32(tt, V) -> U33(isQid(V)) U33(tt) -> tt U42(tt, V1, V2) -> U43(isPalListKind(V2), V1, V2) U43(tt, V1, V2) -> U44(isPalListKind(V2), V1, V2) U44(tt, V1, V2) -> U45(isList(V1), V2) U45(tt, V2) -> U46(isNeList(V2)) U46(tt) -> tt U51(tt, V1, V2) -> U52(isPalListKind(V1), V1, V2) U52(tt, V1, V2) -> U53(isPalListKind(V2), V1, V2) U53(tt, V1, V2) -> U54(isPalListKind(V2), V1, V2) U54(tt, V1, V2) -> U55(isNeList(V1), V2) U55(tt, V2) -> U56(isList(V2)) U56(tt) -> tt U61(tt, V) -> U62(isPalListKind(V), V) U62(tt, V) -> U63(isQid(V)) U63(tt) -> tt U72(tt, P) -> U73(isPal(P), P) U73(tt, P) -> U74(isPalListKind(P)) U74(tt) -> tt U81(tt, V) -> U82(isPalListKind(V), V) U82(tt, V) -> U83(isNePal(V)) U83(tt) -> tt U91(tt, V2) -> U92(isPalListKind(V2)) U92(tt) -> tt isList(V) -> U11(isPalListKind(V), V) isList(__(V1, V2)) -> U21(isPalListKind(V1), V1, V2) isNeList(V) -> U31(isPalListKind(V), V) isNeList(__(V1, V2)) -> U41(isPalListKind(V1), V1, V2) isNePal(V) -> U61(isPalListKind(V), V) isPal(V) -> U81(isPalListKind(V), V) isPalListKind(a) -> tt isPalListKind(e) -> tt isPalListKind(i) -> tt isPalListKind(nil) -> tt isPalListKind(o) -> tt isPalListKind(u) -> tt isPalListKind(__(V1, V2)) -> U91(isPalListKind(V1), V2) The replacement map contains the following entries: __: {1, 2} nil: empty set U11: {1} tt: empty set U12: {1} isPalListKind: empty set U13: {1} isNeList: empty set U21: {1} U22: {1} U23: {1} U24: {1} U25: {1} isList: empty set U26: {1} U31: {1} U32: {1} U33: {1} isQid: empty set U41: {1} U42: {1} U43: {1} U44: {1} U45: {1} U46: {1} U51: {1} U52: {1} U53: {1} U54: {1} U55: {1} U56: {1} U61: {1} U62: {1} U63: {1} U72: {1} U73: {1} isPal: empty set U74: {1} U81: {1} U82: {1} U83: {1} isNePal: empty set U91: {1} U92: {1} a: empty set e: empty set i: empty set o: empty set u: empty set Used ordering: Polynomial interpretation [POLO]: POL(U11(x_1, x_2)) = x_1 + x_2 POL(U12(x_1, x_2)) = x_1 + x_2 POL(U13(x_1)) = x_1 POL(U21(x_1, x_2, x_3)) = 1 + x_1 + x_2 + x_3 POL(U22(x_1, x_2, x_3)) = 1 + x_1 + x_2 + x_3 POL(U23(x_1, x_2, x_3)) = x_1 + x_2 + x_3 POL(U24(x_1, x_2, x_3)) = x_1 + x_2 + x_3 POL(U25(x_1, x_2)) = x_1 + x_2 POL(U26(x_1)) = x_1 POL(U31(x_1, x_2)) = x_1 + x_2 POL(U32(x_1, x_2)) = x_1 + x_2 POL(U33(x_1)) = x_1 POL(U41(x_1, x_2, x_3)) = x_1 + x_2 + x_3 POL(U42(x_1, x_2, x_3)) = 1 + x_1 + x_2 + x_3 POL(U43(x_1, x_2, x_3)) = 1 + x_1 + x_2 + x_3 POL(U44(x_1, x_2, x_3)) = x_1 + x_2 + x_3 POL(U45(x_1, x_2)) = x_1 + x_2 POL(U46(x_1)) = x_1 POL(U51(x_1, x_2, x_3)) = 1 + x_1 + x_2 + x_3 POL(U52(x_1, x_2, x_3)) = 1 + x_1 + x_2 + x_3 POL(U53(x_1, x_2, x_3)) = 1 + x_1 + x_2 + x_3 POL(U54(x_1, x_2, x_3)) = 1 + x_1 + x_2 + x_3 POL(U55(x_1, x_2)) = 1 + x_1 + x_2 POL(U56(x_1)) = x_1 POL(U61(x_1, x_2)) = x_1 + x_2 POL(U62(x_1, x_2)) = x_1 + x_2 POL(U63(x_1)) = x_1 POL(U72(x_1, x_2)) = 1 + x_1 + x_2 POL(U73(x_1, x_2)) = x_1 POL(U74(x_1)) = x_1 POL(U81(x_1, x_2)) = x_1 + x_2 POL(U82(x_1, x_2)) = x_1 + x_2 POL(U83(x_1)) = x_1 POL(U91(x_1, x_2)) = x_1 POL(U92(x_1)) = x_1 POL(__(x_1, x_2)) = 1 + x_1 + x_2 POL(a) = 1 POL(e) = 1 POL(i) = 1 POL(isList(x_1)) = 1 + x_1 POL(isNeList(x_1)) = 1 + x_1 POL(isNePal(x_1)) = 1 + x_1 POL(isPal(x_1)) = 1 + x_1 POL(isPalListKind(x_1)) = 1 POL(isQid(x_1)) = 1 + x_1 POL(nil) = 1 POL(o) = 1 POL(tt) = 1 POL(u) = 1 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: U22(tt, V1, V2) -> U23(isPalListKind(V2), V1, V2) U43(tt, V1, V2) -> U44(isPalListKind(V2), V1, V2) U55(tt, V2) -> U56(isList(V2)) U72(tt, P) -> U73(isPal(P), P) isNeList(__(V1, V2)) -> U41(isPalListKind(V1), V1, V2) ---------------------------------------- (6) Obligation: Context-sensitive rewrite system: The TRS R consists of the following rules: __(__(X, Y), Z) -> __(X, __(Y, Z)) U11(tt, V) -> U12(isPalListKind(V), V) U12(tt, V) -> U13(isNeList(V)) U13(tt) -> tt U21(tt, V1, V2) -> U22(isPalListKind(V1), V1, V2) U23(tt, V1, V2) -> U24(isPalListKind(V2), V1, V2) U24(tt, V1, V2) -> U25(isList(V1), V2) U26(tt) -> tt U31(tt, V) -> U32(isPalListKind(V), V) U32(tt, V) -> U33(isQid(V)) U33(tt) -> tt U42(tt, V1, V2) -> U43(isPalListKind(V2), V1, V2) U44(tt, V1, V2) -> U45(isList(V1), V2) U45(tt, V2) -> U46(isNeList(V2)) U46(tt) -> tt U51(tt, V1, V2) -> U52(isPalListKind(V1), V1, V2) U52(tt, V1, V2) -> U53(isPalListKind(V2), V1, V2) U53(tt, V1, V2) -> U54(isPalListKind(V2), V1, V2) U54(tt, V1, V2) -> U55(isNeList(V1), V2) U56(tt) -> tt U61(tt, V) -> U62(isPalListKind(V), V) U62(tt, V) -> U63(isQid(V)) U63(tt) -> tt U73(tt, P) -> U74(isPalListKind(P)) U74(tt) -> tt U81(tt, V) -> U82(isPalListKind(V), V) U82(tt, V) -> U83(isNePal(V)) U83(tt) -> tt U91(tt, V2) -> U92(isPalListKind(V2)) U92(tt) -> tt isList(V) -> U11(isPalListKind(V), V) isList(__(V1, V2)) -> U21(isPalListKind(V1), V1, V2) isNeList(V) -> U31(isPalListKind(V), V) isNePal(V) -> U61(isPalListKind(V), V) isPal(V) -> U81(isPalListKind(V), V) isPalListKind(a) -> tt isPalListKind(e) -> tt isPalListKind(i) -> tt isPalListKind(nil) -> tt isPalListKind(o) -> tt isPalListKind(u) -> tt isPalListKind(__(V1, V2)) -> U91(isPalListKind(V1), V2) The replacement map contains the following entries: __: {1, 2} nil: empty set U11: {1} tt: empty set U12: {1} isPalListKind: empty set U13: {1} isNeList: empty set U21: {1} U22: {1} U23: {1} U24: {1} U25: {1} isList: empty set U26: {1} U31: {1} U32: {1} U33: {1} isQid: empty set U42: {1} U43: {1} U44: {1} U45: {1} U46: {1} U51: {1} U52: {1} U53: {1} U54: {1} U55: {1} U56: {1} U61: {1} U62: {1} U63: {1} U73: {1} isPal: empty set U74: {1} U81: {1} U82: {1} U83: {1} isNePal: empty set U91: {1} U92: {1} a: empty set e: empty set i: empty set o: empty set u: empty set ---------------------------------------- (7) CSRRRRProof (EQUIVALENT) The following CSR is given: Context-sensitive rewrite system: The TRS R consists of the following rules: __(__(X, Y), Z) -> __(X, __(Y, Z)) U11(tt, V) -> U12(isPalListKind(V), V) U12(tt, V) -> U13(isNeList(V)) U13(tt) -> tt U21(tt, V1, V2) -> U22(isPalListKind(V1), V1, V2) U23(tt, V1, V2) -> U24(isPalListKind(V2), V1, V2) U24(tt, V1, V2) -> U25(isList(V1), V2) U26(tt) -> tt U31(tt, V) -> U32(isPalListKind(V), V) U32(tt, V) -> U33(isQid(V)) U33(tt) -> tt U42(tt, V1, V2) -> U43(isPalListKind(V2), V1, V2) U44(tt, V1, V2) -> U45(isList(V1), V2) U45(tt, V2) -> U46(isNeList(V2)) U46(tt) -> tt U51(tt, V1, V2) -> U52(isPalListKind(V1), V1, V2) U52(tt, V1, V2) -> U53(isPalListKind(V2), V1, V2) U53(tt, V1, V2) -> U54(isPalListKind(V2), V1, V2) U54(tt, V1, V2) -> U55(isNeList(V1), V2) U56(tt) -> tt U61(tt, V) -> U62(isPalListKind(V), V) U62(tt, V) -> U63(isQid(V)) U63(tt) -> tt U73(tt, P) -> U74(isPalListKind(P)) U74(tt) -> tt U81(tt, V) -> U82(isPalListKind(V), V) U82(tt, V) -> U83(isNePal(V)) U83(tt) -> tt U91(tt, V2) -> U92(isPalListKind(V2)) U92(tt) -> tt isList(V) -> U11(isPalListKind(V), V) isList(__(V1, V2)) -> U21(isPalListKind(V1), V1, V2) isNeList(V) -> U31(isPalListKind(V), V) isNePal(V) -> U61(isPalListKind(V), V) isPal(V) -> U81(isPalListKind(V), V) isPalListKind(a) -> tt isPalListKind(e) -> tt isPalListKind(i) -> tt isPalListKind(nil) -> tt isPalListKind(o) -> tt isPalListKind(u) -> tt isPalListKind(__(V1, V2)) -> U91(isPalListKind(V1), V2) The replacement map contains the following entries: __: {1, 2} nil: empty set U11: {1} tt: empty set U12: {1} isPalListKind: empty set U13: {1} isNeList: empty set U21: {1} U22: {1} U23: {1} U24: {1} U25: {1} isList: empty set U26: {1} U31: {1} U32: {1} U33: {1} isQid: empty set U42: {1} U43: {1} U44: {1} U45: {1} U46: {1} U51: {1} U52: {1} U53: {1} U54: {1} U55: {1} U56: {1} U61: {1} U62: {1} U63: {1} U73: {1} isPal: empty set U74: {1} U81: {1} U82: {1} U83: {1} isNePal: empty set U91: {1} U92: {1} a: empty set e: empty set i: empty set o: empty set u: empty set Used ordering: Polynomial interpretation [POLO]: POL(U11(x_1, x_2)) = x_1 + x_2 POL(U12(x_1, x_2)) = x_1 + x_2 POL(U13(x_1)) = x_1 POL(U21(x_1, x_2, x_3)) = x_1 + x_2 + x_3 POL(U22(x_1, x_2, x_3)) = x_1 + x_2 + x_3 POL(U23(x_1, x_2, x_3)) = 1 + x_1 + x_2 + x_3 POL(U24(x_1, x_2, x_3)) = x_1 + x_2 + x_3 POL(U25(x_1, x_2)) = x_1 + x_2 POL(U26(x_1)) = x_1 POL(U31(x_1, x_2)) = x_1 + x_2 POL(U32(x_1, x_2)) = x_1 + x_2 POL(U33(x_1)) = 1 + x_1 POL(U42(x_1, x_2, x_3)) = 1 + x_1 + x_2 + x_3 POL(U43(x_1, x_2, x_3)) = x_1 + x_2 + x_3 POL(U44(x_1, x_2, x_3)) = 1 + x_1 + x_2 + x_3 POL(U45(x_1, x_2)) = 1 + x_1 + x_2 POL(U46(x_1)) = x_1 POL(U51(x_1, x_2, x_3)) = 1 + x_1 + x_2 + x_3 POL(U52(x_1, x_2, x_3)) = x_1 + x_2 + x_3 POL(U53(x_1, x_2, x_3)) = x_1 + x_2 + x_3 POL(U54(x_1, x_2, x_3)) = x_1 + x_2 + x_3 POL(U55(x_1, x_2)) = x_1 + x_2 POL(U56(x_1)) = x_1 POL(U61(x_1, x_2)) = x_1 + x_2 POL(U62(x_1, x_2)) = x_1 + x_2 POL(U63(x_1)) = x_1 POL(U73(x_1, x_2)) = 1 + x_1 + x_2 POL(U74(x_1)) = x_1 POL(U81(x_1, x_2)) = x_1 + x_2 POL(U82(x_1, x_2)) = x_1 + x_2 POL(U83(x_1)) = x_1 POL(U91(x_1, x_2)) = x_1 POL(U92(x_1)) = x_1 POL(__(x_1, x_2)) = 1 + x_1 + x_2 POL(a) = 1 POL(e) = 1 POL(i) = 1 POL(isList(x_1)) = 1 + x_1 POL(isNeList(x_1)) = 1 + x_1 POL(isNePal(x_1)) = 1 + x_1 POL(isPal(x_1)) = 1 + x_1 POL(isPalListKind(x_1)) = 1 POL(isQid(x_1)) = x_1 POL(nil) = 1 POL(o) = 1 POL(tt) = 1 POL(u) = 1 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: U23(tt, V1, V2) -> U24(isPalListKind(V2), V1, V2) U33(tt) -> tt U42(tt, V1, V2) -> U43(isPalListKind(V2), V1, V2) U45(tt, V2) -> U46(isNeList(V2)) U51(tt, V1, V2) -> U52(isPalListKind(V1), V1, V2) U62(tt, V) -> U63(isQid(V)) U73(tt, P) -> U74(isPalListKind(P)) isList(__(V1, V2)) -> U21(isPalListKind(V1), V1, V2) ---------------------------------------- (8) Obligation: Context-sensitive rewrite system: The TRS R consists of the following rules: __(__(X, Y), Z) -> __(X, __(Y, Z)) U11(tt, V) -> U12(isPalListKind(V), V) U12(tt, V) -> U13(isNeList(V)) U13(tt) -> tt U21(tt, V1, V2) -> U22(isPalListKind(V1), V1, V2) U24(tt, V1, V2) -> U25(isList(V1), V2) U26(tt) -> tt U31(tt, V) -> U32(isPalListKind(V), V) U32(tt, V) -> U33(isQid(V)) U44(tt, V1, V2) -> U45(isList(V1), V2) U46(tt) -> tt U52(tt, V1, V2) -> U53(isPalListKind(V2), V1, V2) U53(tt, V1, V2) -> U54(isPalListKind(V2), V1, V2) U54(tt, V1, V2) -> U55(isNeList(V1), V2) U56(tt) -> tt U61(tt, V) -> U62(isPalListKind(V), V) U63(tt) -> tt U74(tt) -> tt U81(tt, V) -> U82(isPalListKind(V), V) U82(tt, V) -> U83(isNePal(V)) U83(tt) -> tt U91(tt, V2) -> U92(isPalListKind(V2)) U92(tt) -> tt isList(V) -> U11(isPalListKind(V), V) isNeList(V) -> U31(isPalListKind(V), V) isNePal(V) -> U61(isPalListKind(V), V) isPal(V) -> U81(isPalListKind(V), V) isPalListKind(a) -> tt isPalListKind(e) -> tt isPalListKind(i) -> tt isPalListKind(nil) -> tt isPalListKind(o) -> tt isPalListKind(u) -> tt isPalListKind(__(V1, V2)) -> U91(isPalListKind(V1), V2) The replacement map contains the following entries: __: {1, 2} nil: empty set U11: {1} tt: empty set U12: {1} isPalListKind: empty set U13: {1} isNeList: empty set U21: {1} U22: {1} U24: {1} U25: {1} isList: empty set U26: {1} U31: {1} U32: {1} U33: {1} isQid: empty set U44: {1} U45: {1} U46: {1} U52: {1} U53: {1} U54: {1} U55: {1} U56: {1} U61: {1} U62: {1} U63: {1} isPal: empty set U74: {1} U81: {1} U82: {1} U83: {1} isNePal: empty set U91: {1} U92: {1} a: empty set e: empty set i: empty set o: empty set u: empty set ---------------------------------------- (9) CSRRRRProof (EQUIVALENT) The following CSR is given: Context-sensitive rewrite system: The TRS R consists of the following rules: __(__(X, Y), Z) -> __(X, __(Y, Z)) U11(tt, V) -> U12(isPalListKind(V), V) U12(tt, V) -> U13(isNeList(V)) U13(tt) -> tt U21(tt, V1, V2) -> U22(isPalListKind(V1), V1, V2) U24(tt, V1, V2) -> U25(isList(V1), V2) U26(tt) -> tt U31(tt, V) -> U32(isPalListKind(V), V) U32(tt, V) -> U33(isQid(V)) U44(tt, V1, V2) -> U45(isList(V1), V2) U46(tt) -> tt U52(tt, V1, V2) -> U53(isPalListKind(V2), V1, V2) U53(tt, V1, V2) -> U54(isPalListKind(V2), V1, V2) U54(tt, V1, V2) -> U55(isNeList(V1), V2) U56(tt) -> tt U61(tt, V) -> U62(isPalListKind(V), V) U63(tt) -> tt U74(tt) -> tt U81(tt, V) -> U82(isPalListKind(V), V) U82(tt, V) -> U83(isNePal(V)) U83(tt) -> tt U91(tt, V2) -> U92(isPalListKind(V2)) U92(tt) -> tt isList(V) -> U11(isPalListKind(V), V) isNeList(V) -> U31(isPalListKind(V), V) isNePal(V) -> U61(isPalListKind(V), V) isPal(V) -> U81(isPalListKind(V), V) isPalListKind(a) -> tt isPalListKind(e) -> tt isPalListKind(i) -> tt isPalListKind(nil) -> tt isPalListKind(o) -> tt isPalListKind(u) -> tt isPalListKind(__(V1, V2)) -> U91(isPalListKind(V1), V2) The replacement map contains the following entries: __: {1, 2} nil: empty set U11: {1} tt: empty set U12: {1} isPalListKind: empty set U13: {1} isNeList: empty set U21: {1} U22: {1} U24: {1} U25: {1} isList: empty set U26: {1} U31: {1} U32: {1} U33: {1} isQid: empty set U44: {1} U45: {1} U46: {1} U52: {1} U53: {1} U54: {1} U55: {1} U56: {1} U61: {1} U62: {1} U63: {1} isPal: empty set U74: {1} U81: {1} U82: {1} U83: {1} isNePal: empty set U91: {1} U92: {1} a: empty set e: empty set i: empty set o: empty set u: empty set Used ordering: Polynomial interpretation [POLO]: POL(U11(x_1, x_2)) = x_1 POL(U12(x_1, x_2)) = 2*x_1 POL(U13(x_1)) = 2*x_1 POL(U21(x_1, x_2, x_3)) = 2 + 2*x_1 + 2*x_2 + 2*x_3 POL(U22(x_1, x_2, x_3)) = 1 + x_1 + 2*x_2 + 2*x_3 POL(U24(x_1, x_2, x_3)) = 2 + x_1 + 2*x_2 + 2*x_3 POL(U25(x_1, x_2)) = 2*x_1 + 2*x_2 POL(U26(x_1)) = 1 + x_1 POL(U31(x_1, x_2)) = 2*x_1 POL(U32(x_1, x_2)) = 2*x_1 POL(U33(x_1)) = 2*x_1 POL(U44(x_1, x_2, x_3)) = 2 + x_1 + 2*x_2 + 2*x_3 POL(U45(x_1, x_2)) = 1 + x_1 + 2*x_2 POL(U46(x_1)) = 1 + x_1 POL(U52(x_1, x_2, x_3)) = x_1 + 2*x_2 + 2*x_3 POL(U53(x_1, x_2, x_3)) = x_1 + 2*x_2 POL(U54(x_1, x_2, x_3)) = x_1 + 2*x_2 POL(U55(x_1, x_2)) = x_1 POL(U56(x_1)) = 1 + x_1 POL(U61(x_1, x_2)) = 2*x_1 POL(U62(x_1, x_2)) = x_1 POL(U63(x_1)) = 1 + x_1 POL(U74(x_1)) = 1 + 2*x_1 POL(U81(x_1, x_2)) = 1 + x_1 POL(U82(x_1, x_2)) = 1 + x_1 POL(U83(x_1)) = 1 + x_1 POL(U91(x_1, x_2)) = 2*x_1 POL(U92(x_1)) = x_1 POL(__(x_1, x_2)) = 2*x_1 + x_2 POL(a) = 2 POL(e) = 2 POL(i) = 2 POL(isList(x_1)) = x_1 POL(isNeList(x_1)) = 0 POL(isNePal(x_1)) = 0 POL(isPal(x_1)) = 2 + 2*x_1 POL(isPalListKind(x_1)) = 0 POL(isQid(x_1)) = 0 POL(nil) = 2 POL(o) = 2 POL(tt) = 0 POL(u) = 2 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: U21(tt, V1, V2) -> U22(isPalListKind(V1), V1, V2) U24(tt, V1, V2) -> U25(isList(V1), V2) U26(tt) -> tt U44(tt, V1, V2) -> U45(isList(V1), V2) U46(tt) -> tt U56(tt) -> tt U63(tt) -> tt U74(tt) -> tt U83(tt) -> tt isPal(V) -> U81(isPalListKind(V), V) ---------------------------------------- (10) Obligation: Context-sensitive rewrite system: The TRS R consists of the following rules: __(__(X, Y), Z) -> __(X, __(Y, Z)) U11(tt, V) -> U12(isPalListKind(V), V) U12(tt, V) -> U13(isNeList(V)) U13(tt) -> tt U31(tt, V) -> U32(isPalListKind(V), V) U32(tt, V) -> U33(isQid(V)) U52(tt, V1, V2) -> U53(isPalListKind(V2), V1, V2) U53(tt, V1, V2) -> U54(isPalListKind(V2), V1, V2) U54(tt, V1, V2) -> U55(isNeList(V1), V2) U61(tt, V) -> U62(isPalListKind(V), V) U81(tt, V) -> U82(isPalListKind(V), V) U82(tt, V) -> U83(isNePal(V)) U91(tt, V2) -> U92(isPalListKind(V2)) U92(tt) -> tt isList(V) -> U11(isPalListKind(V), V) isNeList(V) -> U31(isPalListKind(V), V) isNePal(V) -> U61(isPalListKind(V), V) isPalListKind(a) -> tt isPalListKind(e) -> tt isPalListKind(i) -> tt isPalListKind(nil) -> tt isPalListKind(o) -> tt isPalListKind(u) -> tt isPalListKind(__(V1, V2)) -> U91(isPalListKind(V1), V2) The replacement map contains the following entries: __: {1, 2} nil: empty set U11: {1} tt: empty set U12: {1} isPalListKind: empty set U13: {1} isNeList: empty set isList: empty set U31: {1} U32: {1} U33: {1} isQid: empty set U52: {1} U53: {1} U54: {1} U55: {1} U61: {1} U62: {1} U81: {1} U82: {1} U83: {1} isNePal: empty set U91: {1} U92: {1} a: empty set e: empty set i: empty set o: empty set u: empty set ---------------------------------------- (11) CSRRRRProof (EQUIVALENT) The following CSR is given: Context-sensitive rewrite system: The TRS R consists of the following rules: __(__(X, Y), Z) -> __(X, __(Y, Z)) U11(tt, V) -> U12(isPalListKind(V), V) U12(tt, V) -> U13(isNeList(V)) U13(tt) -> tt U31(tt, V) -> U32(isPalListKind(V), V) U32(tt, V) -> U33(isQid(V)) U52(tt, V1, V2) -> U53(isPalListKind(V2), V1, V2) U53(tt, V1, V2) -> U54(isPalListKind(V2), V1, V2) U54(tt, V1, V2) -> U55(isNeList(V1), V2) U61(tt, V) -> U62(isPalListKind(V), V) U81(tt, V) -> U82(isPalListKind(V), V) U82(tt, V) -> U83(isNePal(V)) U91(tt, V2) -> U92(isPalListKind(V2)) U92(tt) -> tt isList(V) -> U11(isPalListKind(V), V) isNeList(V) -> U31(isPalListKind(V), V) isNePal(V) -> U61(isPalListKind(V), V) isPalListKind(a) -> tt isPalListKind(e) -> tt isPalListKind(i) -> tt isPalListKind(nil) -> tt isPalListKind(o) -> tt isPalListKind(u) -> tt isPalListKind(__(V1, V2)) -> U91(isPalListKind(V1), V2) The replacement map contains the following entries: __: {1, 2} nil: empty set U11: {1} tt: empty set U12: {1} isPalListKind: empty set U13: {1} isNeList: empty set isList: empty set U31: {1} U32: {1} U33: {1} isQid: empty set U52: {1} U53: {1} U54: {1} U55: {1} U61: {1} U62: {1} U81: {1} U82: {1} U83: {1} isNePal: empty set U91: {1} U92: {1} a: empty set e: empty set i: empty set o: empty set u: empty set Used ordering: Polynomial interpretation [POLO]: POL(U11(x_1, x_2)) = x_1 + x_2 POL(U12(x_1, x_2)) = x_1 + x_2 POL(U13(x_1)) = x_1 POL(U31(x_1, x_2)) = x_1 + x_2 POL(U32(x_1, x_2)) = x_1 + x_2 POL(U33(x_1)) = 1 + x_1 POL(U52(x_1, x_2, x_3)) = 1 + x_1 + x_2 + x_3 POL(U53(x_1, x_2, x_3)) = 1 + x_1 + x_2 + x_3 POL(U54(x_1, x_2, x_3)) = x_1 + x_2 + x_3 POL(U55(x_1, x_2)) = x_1 + x_2 POL(U61(x_1, x_2)) = x_1 + x_2 POL(U62(x_1, x_2)) = x_1 + x_2 POL(U81(x_1, x_2)) = x_1 + x_2 POL(U82(x_1, x_2)) = x_1 + x_2 POL(U83(x_1)) = x_1 POL(U91(x_1, x_2)) = x_1 POL(U92(x_1)) = x_1 POL(__(x_1, x_2)) = 1 + x_1 + x_2 POL(a) = 1 POL(e) = 1 POL(i) = 1 POL(isList(x_1)) = 1 + x_1 POL(isNeList(x_1)) = 1 + x_1 POL(isNePal(x_1)) = 1 + x_1 POL(isPalListKind(x_1)) = 1 POL(isQid(x_1)) = x_1 POL(nil) = 1 POL(o) = 1 POL(tt) = 1 POL(u) = 1 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: U53(tt, V1, V2) -> U54(isPalListKind(V2), V1, V2) ---------------------------------------- (12) Obligation: Context-sensitive rewrite system: The TRS R consists of the following rules: __(__(X, Y), Z) -> __(X, __(Y, Z)) U11(tt, V) -> U12(isPalListKind(V), V) U12(tt, V) -> U13(isNeList(V)) U13(tt) -> tt U31(tt, V) -> U32(isPalListKind(V), V) U32(tt, V) -> U33(isQid(V)) U52(tt, V1, V2) -> U53(isPalListKind(V2), V1, V2) U54(tt, V1, V2) -> U55(isNeList(V1), V2) U61(tt, V) -> U62(isPalListKind(V), V) U81(tt, V) -> U82(isPalListKind(V), V) U82(tt, V) -> U83(isNePal(V)) U91(tt, V2) -> U92(isPalListKind(V2)) U92(tt) -> tt isList(V) -> U11(isPalListKind(V), V) isNeList(V) -> U31(isPalListKind(V), V) isNePal(V) -> U61(isPalListKind(V), V) isPalListKind(a) -> tt isPalListKind(e) -> tt isPalListKind(i) -> tt isPalListKind(nil) -> tt isPalListKind(o) -> tt isPalListKind(u) -> tt isPalListKind(__(V1, V2)) -> U91(isPalListKind(V1), V2) The replacement map contains the following entries: __: {1, 2} nil: empty set U11: {1} tt: empty set U12: {1} isPalListKind: empty set U13: {1} isNeList: empty set isList: empty set U31: {1} U32: {1} U33: {1} isQid: empty set U52: {1} U53: {1} U54: {1} U55: {1} U61: {1} U62: {1} U81: {1} U82: {1} U83: {1} isNePal: empty set U91: {1} U92: {1} a: empty set e: empty set i: empty set o: empty set u: empty set ---------------------------------------- (13) CSRRRRProof (EQUIVALENT) The following CSR is given: Context-sensitive rewrite system: The TRS R consists of the following rules: __(__(X, Y), Z) -> __(X, __(Y, Z)) U11(tt, V) -> U12(isPalListKind(V), V) U12(tt, V) -> U13(isNeList(V)) U13(tt) -> tt U31(tt, V) -> U32(isPalListKind(V), V) U32(tt, V) -> U33(isQid(V)) U52(tt, V1, V2) -> U53(isPalListKind(V2), V1, V2) U54(tt, V1, V2) -> U55(isNeList(V1), V2) U61(tt, V) -> U62(isPalListKind(V), V) U81(tt, V) -> U82(isPalListKind(V), V) U82(tt, V) -> U83(isNePal(V)) U91(tt, V2) -> U92(isPalListKind(V2)) U92(tt) -> tt isList(V) -> U11(isPalListKind(V), V) isNeList(V) -> U31(isPalListKind(V), V) isNePal(V) -> U61(isPalListKind(V), V) isPalListKind(a) -> tt isPalListKind(e) -> tt isPalListKind(i) -> tt isPalListKind(nil) -> tt isPalListKind(o) -> tt isPalListKind(u) -> tt isPalListKind(__(V1, V2)) -> U91(isPalListKind(V1), V2) The replacement map contains the following entries: __: {1, 2} nil: empty set U11: {1} tt: empty set U12: {1} isPalListKind: empty set U13: {1} isNeList: empty set isList: empty set U31: {1} U32: {1} U33: {1} isQid: empty set U52: {1} U53: {1} U54: {1} U55: {1} U61: {1} U62: {1} U81: {1} U82: {1} U83: {1} isNePal: empty set U91: {1} U92: {1} a: empty set e: empty set i: empty set o: empty set u: empty set Used ordering: Polynomial interpretation [POLO]: POL(U11(x_1, x_2)) = 2*x_1 POL(U12(x_1, x_2)) = 2*x_1 POL(U13(x_1)) = 2*x_1 POL(U31(x_1, x_2)) = 2*x_1 POL(U32(x_1, x_2)) = 2*x_1 POL(U33(x_1)) = x_1 POL(U52(x_1, x_2, x_3)) = 2 + x_1 + 2*x_2 + 2*x_3 POL(U53(x_1, x_2, x_3)) = 1 + x_1 + 2*x_2 + 2*x_3 POL(U54(x_1, x_2, x_3)) = 2*x_1 + 2*x_2 + 2*x_3 POL(U55(x_1, x_2)) = 2*x_1 + 2*x_2 POL(U61(x_1, x_2)) = 2*x_1 POL(U62(x_1, x_2)) = x_1 POL(U81(x_1, x_2)) = x_1 + 2*x_2 POL(U82(x_1, x_2)) = x_1 POL(U83(x_1)) = x_1 POL(U91(x_1, x_2)) = 2*x_1 POL(U92(x_1)) = x_1 POL(__(x_1, x_2)) = 2*x_1 + x_2 POL(a) = 2 POL(e) = 2 POL(i) = 2 POL(isList(x_1)) = 2 + 2*x_1 POL(isNeList(x_1)) = 0 POL(isNePal(x_1)) = 0 POL(isPalListKind(x_1)) = 0 POL(isQid(x_1)) = 0 POL(nil) = 2 POL(o) = 2 POL(tt) = 0 POL(u) = 2 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: U52(tt, V1, V2) -> U53(isPalListKind(V2), V1, V2) isList(V) -> U11(isPalListKind(V), V) ---------------------------------------- (14) Obligation: Context-sensitive rewrite system: The TRS R consists of the following rules: __(__(X, Y), Z) -> __(X, __(Y, Z)) U11(tt, V) -> U12(isPalListKind(V), V) U12(tt, V) -> U13(isNeList(V)) U13(tt) -> tt U31(tt, V) -> U32(isPalListKind(V), V) U32(tt, V) -> U33(isQid(V)) U54(tt, V1, V2) -> U55(isNeList(V1), V2) U61(tt, V) -> U62(isPalListKind(V), V) U81(tt, V) -> U82(isPalListKind(V), V) U82(tt, V) -> U83(isNePal(V)) U91(tt, V2) -> U92(isPalListKind(V2)) U92(tt) -> tt isNeList(V) -> U31(isPalListKind(V), V) isNePal(V) -> U61(isPalListKind(V), V) isPalListKind(a) -> tt isPalListKind(e) -> tt isPalListKind(i) -> tt isPalListKind(nil) -> tt isPalListKind(o) -> tt isPalListKind(u) -> tt isPalListKind(__(V1, V2)) -> U91(isPalListKind(V1), V2) The replacement map contains the following entries: __: {1, 2} nil: empty set U11: {1} tt: empty set U12: {1} isPalListKind: empty set U13: {1} isNeList: empty set U31: {1} U32: {1} U33: {1} isQid: empty set U54: {1} U55: {1} U61: {1} U62: {1} U81: {1} U82: {1} U83: {1} isNePal: empty set U91: {1} U92: {1} a: empty set e: empty set i: empty set o: empty set u: empty set ---------------------------------------- (15) CSRRRRProof (EQUIVALENT) The following CSR is given: Context-sensitive rewrite system: The TRS R consists of the following rules: __(__(X, Y), Z) -> __(X, __(Y, Z)) U11(tt, V) -> U12(isPalListKind(V), V) U12(tt, V) -> U13(isNeList(V)) U13(tt) -> tt U31(tt, V) -> U32(isPalListKind(V), V) U32(tt, V) -> U33(isQid(V)) U54(tt, V1, V2) -> U55(isNeList(V1), V2) U61(tt, V) -> U62(isPalListKind(V), V) U81(tt, V) -> U82(isPalListKind(V), V) U82(tt, V) -> U83(isNePal(V)) U91(tt, V2) -> U92(isPalListKind(V2)) U92(tt) -> tt isNeList(V) -> U31(isPalListKind(V), V) isNePal(V) -> U61(isPalListKind(V), V) isPalListKind(a) -> tt isPalListKind(e) -> tt isPalListKind(i) -> tt isPalListKind(nil) -> tt isPalListKind(o) -> tt isPalListKind(u) -> tt isPalListKind(__(V1, V2)) -> U91(isPalListKind(V1), V2) The replacement map contains the following entries: __: {1, 2} nil: empty set U11: {1} tt: empty set U12: {1} isPalListKind: empty set U13: {1} isNeList: empty set U31: {1} U32: {1} U33: {1} isQid: empty set U54: {1} U55: {1} U61: {1} U62: {1} U81: {1} U82: {1} U83: {1} isNePal: empty set U91: {1} U92: {1} a: empty set e: empty set i: empty set o: empty set u: empty set Used ordering: Polynomial interpretation [POLO]: POL(U11(x_1, x_2)) = 1 + x_1 + x_2 POL(U12(x_1, x_2)) = x_1 + x_2 POL(U13(x_1)) = x_1 POL(U31(x_1, x_2)) = x_1 + x_2 POL(U32(x_1, x_2)) = x_1 + x_2 POL(U33(x_1)) = 1 + x_1 POL(U54(x_1, x_2, x_3)) = x_1 + x_2 + x_3 POL(U55(x_1, x_2)) = x_1 + x_2 POL(U61(x_1, x_2)) = x_1 + x_2 POL(U62(x_1, x_2)) = x_1 + x_2 POL(U81(x_1, x_2)) = 1 + x_1 + x_2 POL(U82(x_1, x_2)) = x_1 + x_2 POL(U83(x_1)) = x_1 POL(U91(x_1, x_2)) = x_1 POL(U92(x_1)) = x_1 POL(__(x_1, x_2)) = 1 + x_1 + x_2 POL(a) = 1 POL(e) = 1 POL(i) = 1 POL(isNeList(x_1)) = 1 + x_1 POL(isNePal(x_1)) = 1 + x_1 POL(isPalListKind(x_1)) = 1 POL(isQid(x_1)) = x_1 POL(nil) = 1 POL(o) = 1 POL(tt) = 1 POL(u) = 1 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: U11(tt, V) -> U12(isPalListKind(V), V) U81(tt, V) -> U82(isPalListKind(V), V) ---------------------------------------- (16) Obligation: Context-sensitive rewrite system: The TRS R consists of the following rules: __(__(X, Y), Z) -> __(X, __(Y, Z)) U12(tt, V) -> U13(isNeList(V)) U13(tt) -> tt U31(tt, V) -> U32(isPalListKind(V), V) U32(tt, V) -> U33(isQid(V)) U54(tt, V1, V2) -> U55(isNeList(V1), V2) U61(tt, V) -> U62(isPalListKind(V), V) U82(tt, V) -> U83(isNePal(V)) U91(tt, V2) -> U92(isPalListKind(V2)) U92(tt) -> tt isNeList(V) -> U31(isPalListKind(V), V) isNePal(V) -> U61(isPalListKind(V), V) isPalListKind(a) -> tt isPalListKind(e) -> tt isPalListKind(i) -> tt isPalListKind(nil) -> tt isPalListKind(o) -> tt isPalListKind(u) -> tt isPalListKind(__(V1, V2)) -> U91(isPalListKind(V1), V2) The replacement map contains the following entries: __: {1, 2} nil: empty set tt: empty set U12: {1} isPalListKind: empty set U13: {1} isNeList: empty set U31: {1} U32: {1} U33: {1} isQid: empty set U54: {1} U55: {1} U61: {1} U62: {1} U82: {1} U83: {1} isNePal: empty set U91: {1} U92: {1} a: empty set e: empty set i: empty set o: empty set u: empty set ---------------------------------------- (17) CSRRRRProof (EQUIVALENT) The following CSR is given: Context-sensitive rewrite system: The TRS R consists of the following rules: __(__(X, Y), Z) -> __(X, __(Y, Z)) U12(tt, V) -> U13(isNeList(V)) U13(tt) -> tt U31(tt, V) -> U32(isPalListKind(V), V) U32(tt, V) -> U33(isQid(V)) U54(tt, V1, V2) -> U55(isNeList(V1), V2) U61(tt, V) -> U62(isPalListKind(V), V) U82(tt, V) -> U83(isNePal(V)) U91(tt, V2) -> U92(isPalListKind(V2)) U92(tt) -> tt isNeList(V) -> U31(isPalListKind(V), V) isNePal(V) -> U61(isPalListKind(V), V) isPalListKind(a) -> tt isPalListKind(e) -> tt isPalListKind(i) -> tt isPalListKind(nil) -> tt isPalListKind(o) -> tt isPalListKind(u) -> tt isPalListKind(__(V1, V2)) -> U91(isPalListKind(V1), V2) The replacement map contains the following entries: __: {1, 2} nil: empty set tt: empty set U12: {1} isPalListKind: empty set U13: {1} isNeList: empty set U31: {1} U32: {1} U33: {1} isQid: empty set U54: {1} U55: {1} U61: {1} U62: {1} U82: {1} U83: {1} isNePal: empty set U91: {1} U92: {1} a: empty set e: empty set i: empty set o: empty set u: empty set Used ordering: Polynomial interpretation [POLO]: POL(U12(x_1, x_2)) = 2 + x_1 + 2*x_2 POL(U13(x_1)) = 1 + x_1 POL(U31(x_1, x_2)) = x_1 + x_2 POL(U32(x_1, x_2)) = x_1 POL(U33(x_1)) = 1 + x_1 POL(U54(x_1, x_2, x_3)) = 1 + 2*x_1 + 2*x_2 + 2*x_3 POL(U55(x_1, x_2)) = x_1 + 2*x_2 POL(U61(x_1, x_2)) = x_1 + x_2 POL(U62(x_1, x_2)) = x_1 POL(U82(x_1, x_2)) = 1 + 2*x_1 + 2*x_2 POL(U83(x_1)) = x_1 POL(U91(x_1, x_2)) = 1 + x_1 + x_2 POL(U92(x_1)) = x_1 POL(__(x_1, x_2)) = 2 + 2*x_1 + x_2 POL(a) = 2 POL(e) = 2 POL(i) = 2 POL(isNeList(x_1)) = 2 + 2*x_1 POL(isNePal(x_1)) = 2 + 2*x_1 POL(isPalListKind(x_1)) = 2 + x_1 POL(isQid(x_1)) = 0 POL(nil) = 2 POL(o) = 2 POL(tt) = 2 POL(u) = 0 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: __(__(X, Y), Z) -> __(X, __(Y, Z)) U12(tt, V) -> U13(isNeList(V)) U13(tt) -> tt U32(tt, V) -> U33(isQid(V)) U54(tt, V1, V2) -> U55(isNeList(V1), V2) U82(tt, V) -> U83(isNePal(V)) U91(tt, V2) -> U92(isPalListKind(V2)) isPalListKind(a) -> tt isPalListKind(e) -> tt isPalListKind(i) -> tt isPalListKind(nil) -> tt isPalListKind(o) -> tt isPalListKind(__(V1, V2)) -> U91(isPalListKind(V1), V2) ---------------------------------------- (18) Obligation: Context-sensitive rewrite system: The TRS R consists of the following rules: U31(tt, V) -> U32(isPalListKind(V), V) U61(tt, V) -> U62(isPalListKind(V), V) U92(tt) -> tt isNeList(V) -> U31(isPalListKind(V), V) isNePal(V) -> U61(isPalListKind(V), V) isPalListKind(u) -> tt The replacement map contains the following entries: tt: empty set isPalListKind: empty set isNeList: empty set U31: {1} U32: {1} U61: {1} U62: {1} isNePal: empty set U92: {1} u: empty set ---------------------------------------- (19) CSRRRRProof (EQUIVALENT) The following CSR is given: Context-sensitive rewrite system: The TRS R consists of the following rules: U31(tt, V) -> U32(isPalListKind(V), V) U61(tt, V) -> U62(isPalListKind(V), V) U92(tt) -> tt isNeList(V) -> U31(isPalListKind(V), V) isNePal(V) -> U61(isPalListKind(V), V) isPalListKind(u) -> tt The replacement map contains the following entries: tt: empty set isPalListKind: empty set isNeList: empty set U31: {1} U32: {1} U61: {1} U62: {1} isNePal: empty set U92: {1} u: empty set Used ordering: Polynomial interpretation [POLO]: POL(U31(x_1, x_2)) = 1 + x_1 + x_2 POL(U32(x_1, x_2)) = x_1 + x_2 POL(U61(x_1, x_2)) = 1 + x_1 + x_2 POL(U62(x_1, x_2)) = x_1 + x_2 POL(U92(x_1)) = x_1 POL(isNeList(x_1)) = 1 + x_1 POL(isNePal(x_1)) = 1 + x_1 POL(isPalListKind(x_1)) = 0 POL(tt) = 0 POL(u) = 1 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: U31(tt, V) -> U32(isPalListKind(V), V) U61(tt, V) -> U62(isPalListKind(V), V) ---------------------------------------- (20) Obligation: Context-sensitive rewrite system: The TRS R consists of the following rules: U92(tt) -> tt isNeList(V) -> U31(isPalListKind(V), V) isNePal(V) -> U61(isPalListKind(V), V) isPalListKind(u) -> tt The replacement map contains the following entries: tt: empty set isPalListKind: empty set isNeList: empty set U31: {1} U61: {1} isNePal: empty set U92: {1} u: empty set ---------------------------------------- (21) CSRRRRProof (EQUIVALENT) The following CSR is given: Context-sensitive rewrite system: The TRS R consists of the following rules: U92(tt) -> tt isNeList(V) -> U31(isPalListKind(V), V) isNePal(V) -> U61(isPalListKind(V), V) isPalListKind(u) -> tt The replacement map contains the following entries: tt: empty set isPalListKind: empty set isNeList: empty set U31: {1} U61: {1} isNePal: empty set U92: {1} u: empty set Used ordering: Polynomial interpretation [POLO]: POL(U31(x_1, x_2)) = x_1 POL(U61(x_1, x_2)) = x_1 POL(U92(x_1)) = x_1 POL(isNeList(x_1)) = 1 + x_1 POL(isNePal(x_1)) = 1 + x_1 POL(isPalListKind(x_1)) = 1 + x_1 POL(tt) = 0 POL(u) = 1 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: isPalListKind(u) -> tt ---------------------------------------- (22) Obligation: Context-sensitive rewrite system: The TRS R consists of the following rules: U92(tt) -> tt isNeList(V) -> U31(isPalListKind(V), V) isNePal(V) -> U61(isPalListKind(V), V) The replacement map contains the following entries: tt: empty set isPalListKind: empty set isNeList: empty set U31: {1} U61: {1} isNePal: empty set U92: {1} ---------------------------------------- (23) CSRRRRProof (EQUIVALENT) The following CSR is given: Context-sensitive rewrite system: The TRS R consists of the following rules: U92(tt) -> tt isNeList(V) -> U31(isPalListKind(V), V) isNePal(V) -> U61(isPalListKind(V), V) The replacement map contains the following entries: tt: empty set isPalListKind: empty set isNeList: empty set U31: {1} U61: {1} isNePal: empty set U92: {1} Used ordering: Polynomial interpretation [POLO]: POL(U31(x_1, x_2)) = x_1 POL(U61(x_1, x_2)) = x_1 POL(U92(x_1)) = 2 + x_1 POL(isNeList(x_1)) = 2 + 2*x_1 POL(isNePal(x_1)) = 2 + 2*x_1 POL(isPalListKind(x_1)) = 2 + 2*x_1 POL(tt) = 2 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: U92(tt) -> tt ---------------------------------------- (24) Obligation: Context-sensitive rewrite system: The TRS R consists of the following rules: isNeList(V) -> U31(isPalListKind(V), V) isNePal(V) -> U61(isPalListKind(V), V) The replacement map contains the following entries: isPalListKind: empty set isNeList: empty set U31: {1} U61: {1} isNePal: empty set ---------------------------------------- (25) CSRRRRProof (EQUIVALENT) The following CSR is given: Context-sensitive rewrite system: The TRS R consists of the following rules: isNeList(V) -> U31(isPalListKind(V), V) isNePal(V) -> U61(isPalListKind(V), V) The replacement map contains the following entries: isPalListKind: empty set isNeList: empty set U31: {1} U61: {1} isNePal: empty set Used ordering: Polynomial interpretation [POLO]: POL(U31(x_1, x_2)) = 1 + x_1 + x_2 POL(U61(x_1, x_2)) = x_1 + x_2 POL(isNeList(x_1)) = 1 + x_1 POL(isNePal(x_1)) = 1 + x_1 POL(isPalListKind(x_1)) = 0 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: isNePal(V) -> U61(isPalListKind(V), V) ---------------------------------------- (26) Obligation: Context-sensitive rewrite system: The TRS R consists of the following rules: isNeList(V) -> U31(isPalListKind(V), V) The replacement map contains the following entries: isPalListKind: empty set isNeList: empty set U31: {1} ---------------------------------------- (27) CSRRRRProof (EQUIVALENT) The following CSR is given: Context-sensitive rewrite system: The TRS R consists of the following rules: isNeList(V) -> U31(isPalListKind(V), V) The replacement map contains the following entries: isPalListKind: empty set isNeList: empty set U31: {1} Used ordering: Polynomial interpretation [POLO]: POL(U31(x_1, x_2)) = x_1 + x_2 POL(isNeList(x_1)) = 1 + x_1 POL(isPalListKind(x_1)) = 0 With this ordering the following rules can be removed by the rule removal processor [LPAR04] because they are oriented strictly: isNeList(V) -> U31(isPalListKind(V), V) ---------------------------------------- (28) Obligation: Context-sensitive rewrite system: R is empty. ---------------------------------------- (29) RisEmptyProof (EQUIVALENT) The CSR R is empty. Hence, termination is trivially proven. ---------------------------------------- (30) YES