The TRS could not be proven terminating. The proof attempt took 60002 ms.
Problem 1 remains open; application of the following processors failed [DependencyGraph (timeout)].
| mark#(U32(X)) | → | U32#(mark(X)) | active#(isPalListKind(__(V1, V2))) | → | and#(isPalListKind(V1), isPalListKind(V2)) | |
| active#(U31(tt, V)) | → | U32#(isQid(V)) | active#(__(__(X, Y), Z)) | → | __#(X, __(Y, Z)) | |
| mark#(a) | → | active#(a) | U11#(mark(X1), X2) | → | U11#(X1, X2) | |
| active#(U31(tt, V)) | → | mark#(U32(isQid(V))) | mark#(e) | → | active#(e) | |
| active#(isPalListKind(a)) | → | mark#(tt) | U52#(X1, active(X2)) | → | U52#(X1, X2) | |
| active#(isQid(i)) | → | mark#(tt) | mark#(U11(X1, X2)) | → | active#(U11(mark(X1), X2)) | |
| mark#(U72(X)) | → | active#(U72(mark(X))) | mark#(U72(X)) | → | mark#(X) | |
| __#(mark(X1), X2) | → | __#(X1, X2) | active#(U41(tt, V1, V2)) | → | mark#(U42(isList(V1), V2)) | |
| mark#(U53(X)) | → | active#(U53(mark(X))) | and#(mark(X1), X2) | → | and#(X1, X2) | |
| mark#(isQid(X)) | → | active#(isQid(X)) | U42#(mark(X1), X2) | → | U42#(X1, X2) | |
| mark#(U12(X)) | → | active#(U12(mark(X))) | active#(isNePal(V)) | → | mark#(U61(isPalListKind(V), V)) | |
| U11#(X1, mark(X2)) | → | U11#(X1, X2) | active#(U12(tt)) | → | mark#(tt) | |
| U41#(X1, active(X2), X3) | → | U41#(X1, X2, X3) | U53#(mark(X)) | → | U53#(X) | |
| mark#(U41(X1, X2, X3)) | → | mark#(X1) | mark#(__(X1, X2)) | → | mark#(X1) | |
| active#(U51(tt, V1, V2)) | → | mark#(U52(isNeList(V1), V2)) | mark#(U53(X)) | → | U53#(mark(X)) | |
| mark#(U62(X)) | → | active#(U62(mark(X))) | mark#(U32(X)) | → | mark#(X) | |
| active#(isPalListKind(__(V1, V2))) | → | isPalListKind#(V1) | U32#(mark(X)) | → | U32#(X) | |
| active#(U71(tt, V)) | → | mark#(U72(isNePal(V))) | mark#(u) | → | active#(u) | |
| mark#(isPalListKind(X)) | → | active#(isPalListKind(X)) | mark#(U22(X1, X2)) | → | mark#(X1) | |
| mark#(U42(X1, X2)) | → | U42#(mark(X1), X2) | U41#(X1, X2, active(X3)) | → | U41#(X1, X2, X3) | |
| U52#(X1, mark(X2)) | → | U52#(X1, X2) | active#(isQid(o)) | → | mark#(tt) | |
| mark#(U42(X1, X2)) | → | mark#(X1) | active#(U72(tt)) | → | mark#(tt) | |
| U62#(active(X)) | → | U62#(X) | __#(X1, mark(X2)) | → | __#(X1, X2) | |
| isQid#(mark(X)) | → | isQid#(X) | mark#(isQid(X)) | → | isQid#(X) | |
| active#(isPal(V)) | → | U71#(isPalListKind(V), V) | active#(isNePal(__(I, __(P, I)))) | → | and#(and(isQid(I), isPalListKind(I)), and(isPal(P), isPalListKind(P))) | |
| active#(U41(tt, V1, V2)) | → | U42#(isList(V1), V2) | active#(isNePal(__(I, __(P, I)))) | → | and#(isPal(P), isPalListKind(P)) | |
| mark#(U41(X1, X2, X3)) | → | active#(U41(mark(X1), X2, X3)) | U42#(active(X1), X2) | → | U42#(X1, X2) | |
| U52#(mark(X1), X2) | → | U52#(X1, X2) | active#(isNeList(__(V1, V2))) | → | isPalListKind#(V2) | |
| active#(isQid(a)) | → | mark#(tt) | active#(__(X, nil)) | → | mark#(X) | |
| active#(U51(tt, V1, V2)) | → | U52#(isNeList(V1), V2) | U61#(active(X1), X2) | → | U61#(X1, X2) | |
| mark#(U52(X1, X2)) | → | U52#(mark(X1), X2) | U12#(mark(X)) | → | U12#(X) | |
| __#(X1, active(X2)) | → | __#(X1, X2) | mark#(i) | → | active#(i) | |
| active#(isNeList(__(V1, V2))) | → | and#(isPalListKind(V1), isPalListKind(V2)) | U61#(mark(X1), X2) | → | U61#(X1, X2) | |
| isPal#(active(X)) | → | isPal#(X) | active#(isNeList(__(V1, V2))) | → | U51#(and(isPalListKind(V1), isPalListKind(V2)), V1, V2) | |
| active#(isQid(e)) | → | mark#(tt) | active#(U62(tt)) | → | mark#(tt) | |
| U51#(X1, mark(X2), X3) | → | U51#(X1, X2, X3) | U21#(X1, mark(X2), X3) | → | U21#(X1, X2, X3) | |
| mark#(and(X1, X2)) | → | and#(mark(X1), X2) | active#(U21(tt, V1, V2)) | → | isList#(V1) | |
| mark#(U61(X1, X2)) | → | active#(U61(mark(X1), X2)) | mark#(U71(X1, X2)) | → | mark#(X1) | |
| U12#(active(X)) | → | U12#(X) | active#(isPal(nil)) | → | mark#(tt) | |
| U51#(active(X1), X2, X3) | → | U51#(X1, X2, X3) | active#(U11(tt, V)) | → | isNeList#(V) | |
| U43#(active(X)) | → | U43#(X) | mark#(isNeList(X)) | → | isNeList#(X) | |
| mark#(U61(X1, X2)) | → | mark#(X1) | isNeList#(mark(X)) | → | isNeList#(X) | |
| mark#(U41(X1, X2, X3)) | → | U41#(mark(X1), X2, X3) | and#(X1, active(X2)) | → | and#(X1, X2) | |
| active#(U21(tt, V1, V2)) | → | U22#(isList(V1), V2) | U61#(X1, mark(X2)) | → | U61#(X1, X2) | |
| active#(isNeList(__(V1, V2))) | → | isPalListKind#(V1) | active#(U21(tt, V1, V2)) | → | mark#(U22(isList(V1), V2)) | |
| mark#(isList(X)) | → | isList#(X) | isList#(mark(X)) | → | isList#(X) | |
| active#(U52(tt, V2)) | → | isList#(V2) | active#(isList(nil)) | → | mark#(tt) | |
| mark#(nil) | → | active#(nil) | U23#(active(X)) | → | U23#(X) | |
| active#(isNePal(__(I, __(P, I)))) | → | mark#(and(and(isQid(I), isPalListKind(I)), and(isPal(P), isPalListKind(P)))) | mark#(U22(X1, X2)) | → | active#(U22(mark(X1), X2)) | |
| and#(X1, mark(X2)) | → | and#(X1, X2) | U43#(mark(X)) | → | U43#(X) | |
| active#(U42(tt, V2)) | → | U43#(isNeList(V2)) | active#(isNeList(__(V1, V2))) | → | U41#(and(isPalListKind(V1), isPalListKind(V2)), V1, V2) | |
| active#(__(nil, X)) | → | mark#(X) | isNePal#(mark(X)) | → | isNePal#(X) | |
| mark#(isNePal(X)) | → | isNePal#(X) | mark#(U21(X1, X2, X3)) | → | U21#(mark(X1), X2, X3) | |
| mark#(isList(X)) | → | active#(isList(X)) | mark#(U31(X1, X2)) | → | U31#(mark(X1), X2) | |
| isPalListKind#(active(X)) | → | isPalListKind#(X) | mark#(U51(X1, X2, X3)) | → | U51#(mark(X1), X2, X3) | |
| mark#(U32(X)) | → | active#(U32(mark(X))) | mark#(U42(X1, X2)) | → | active#(U42(mark(X1), X2)) | |
| active#(isPalListKind(__(V1, V2))) | → | mark#(and(isPalListKind(V1), isPalListKind(V2))) | mark#(U43(X)) | → | U43#(mark(X)) | |
| mark#(U11(X1, X2)) | → | mark#(X1) | active#(__(__(X, Y), Z)) | → | mark#(__(X, __(Y, Z))) | |
| mark#(U72(X)) | → | U72#(mark(X)) | U71#(X1, mark(X2)) | → | U71#(X1, X2) | |
| active#(isPalListKind(o)) | → | mark#(tt) | U21#(X1, X2, active(X3)) | → | U21#(X1, X2, X3) | |
| active#(U61(tt, V)) | → | mark#(U62(isQid(V))) | __#(active(X1), X2) | → | __#(X1, X2) | |
| active#(isList(V)) | → | isPalListKind#(V) | mark#(U22(X1, X2)) | → | U22#(mark(X1), X2) | |
| active#(U51(tt, V1, V2)) | → | isNeList#(V1) | mark#(__(X1, X2)) | → | mark#(X2) | |
| active#(U11(tt, V)) | → | mark#(U12(isNeList(V))) | U22#(active(X1), X2) | → | U22#(X1, X2) | |
| mark#(U53(X)) | → | mark#(X) | active#(isNePal(__(I, __(P, I)))) | → | and#(isQid(I), isPalListKind(I)) | |
| U51#(X1, X2, active(X3)) | → | U51#(X1, X2, X3) | active#(U53(tt)) | → | mark#(tt) | |
| mark#(U71(X1, X2)) | → | U71#(mark(X1), X2) | U11#(active(X1), X2) | → | U11#(X1, X2) | |
| active#(isNeList(__(V1, V2))) | → | mark#(U51(and(isPalListKind(V1), isPalListKind(V2)), V1, V2)) | active#(U52(tt, V2)) | → | mark#(U53(isList(V2))) | |
| U21#(mark(X1), X2, X3) | → | U21#(X1, X2, X3) | mark#(and(X1, X2)) | → | mark#(X1) | |
| U11#(X1, active(X2)) | → | U11#(X1, X2) | mark#(isNeList(X)) | → | active#(isNeList(X)) | |
| U21#(active(X1), X2, X3) | → | U21#(X1, X2, X3) | mark#(U62(X)) | → | mark#(X) | |
| active#(U71(tt, V)) | → | isNePal#(V) | U22#(mark(X1), X2) | → | U22#(X1, X2) | |
| mark#(tt) | → | active#(tt) | active#(isNePal(__(I, __(P, I)))) | → | isPalListKind#(P) | |
| mark#(o) | → | active#(o) | U31#(X1, active(X2)) | → | U31#(X1, X2) | |
| mark#(U23(X)) | → | active#(U23(mark(X))) | mark#(U61(X1, X2)) | → | U61#(mark(X1), X2) | |
| active#(isList(V)) | → | U11#(isPalListKind(V), V) | U22#(X1, active(X2)) | → | U22#(X1, X2) | |
| active#(isPalListKind(__(V1, V2))) | → | isPalListKind#(V2) | isPalListKind#(mark(X)) | → | isPalListKind#(X) | |
| mark#(isPalListKind(X)) | → | isPalListKind#(X) | active#(isList(__(V1, V2))) | → | isPalListKind#(V2) | |
| active#(U11(tt, V)) | → | U12#(isNeList(V)) | mark#(U51(X1, X2, X3)) | → | mark#(X1) | |
| active#(isNeList(__(V1, V2))) | → | mark#(U41(and(isPalListKind(V1), isPalListKind(V2)), V1, V2)) | mark#(U23(X)) | → | mark#(X) | |
| U62#(mark(X)) | → | U62#(X) | U71#(mark(X1), X2) | → | U71#(X1, X2) | |
| U61#(X1, active(X2)) | → | U61#(X1, X2) | U21#(X1, X2, mark(X3)) | → | U21#(X1, X2, X3) | |
| mark#(U31(X1, X2)) | → | active#(U31(mark(X1), X2)) | active#(isPalListKind(nil)) | → | mark#(tt) | |
| U51#(mark(X1), X2, X3) | → | U51#(X1, X2, X3) | active#(isNeList(V)) | → | mark#(U31(isPalListKind(V), V)) | |
| U41#(X1, X2, mark(X3)) | → | U41#(X1, X2, X3) | U52#(active(X1), X2) | → | U52#(X1, X2) | |
| active#(__(__(X, Y), Z)) | → | __#(Y, Z) | active#(isPalListKind(e)) | → | mark#(tt) | |
| mark#(U43(X)) | → | active#(U43(mark(X))) | active#(isNePal(__(I, __(P, I)))) | → | isPalListKind#(I) | |
| mark#(U43(X)) | → | mark#(X) | active#(U31(tt, V)) | → | isQid#(V) | |
| mark#(U62(X)) | → | U62#(mark(X)) | mark#(U51(X1, X2, X3)) | → | active#(U51(mark(X1), X2, X3)) | |
| active#(isNeList(V)) | → | U31#(isPalListKind(V), V) | active#(isNePal(V)) | → | U61#(isPalListKind(V), V) | |
| active#(U41(tt, V1, V2)) | → | isList#(V1) | mark#(__(X1, X2)) | → | __#(mark(X1), mark(X2)) | |
| active#(isNePal(V)) | → | isPalListKind#(V) | active#(isPal(V)) | → | mark#(U71(isPalListKind(V), V)) | |
| active#(isList(V)) | → | mark#(U11(isPalListKind(V), V)) | U53#(active(X)) | → | U53#(X) | |
| U23#(mark(X)) | → | U23#(X) | isList#(active(X)) | → | isList#(X) | |
| active#(isPalListKind(u)) | → | mark#(tt) | U51#(X1, active(X2), X3) | → | U51#(X1, X2, X3) | |
| isNeList#(active(X)) | → | isNeList#(X) | U42#(X1, mark(X2)) | → | U42#(X1, X2) | |
| U31#(active(X1), X2) | → | U31#(X1, X2) | mark#(U31(X1, X2)) | → | mark#(X1) | |
| active#(U32(tt)) | → | mark#(tt) | mark#(U23(X)) | → | U23#(mark(X)) | |
| mark#(U12(X)) | → | U12#(mark(X)) | active#(U22(tt, V2)) | → | U23#(isList(V2)) | |
| active#(U52(tt, V2)) | → | U53#(isList(V2)) | mark#(isPal(X)) | → | active#(isPal(X)) | |
| mark#(__(X1, X2)) | → | active#(__(mark(X1), mark(X2))) | active#(U71(tt, V)) | → | U72#(isNePal(V)) | |
| active#(U42(tt, V2)) | → | mark#(U43(isNeList(V2))) | active#(U22(tt, V2)) | → | mark#(U23(isList(V2))) | |
| U72#(mark(X)) | → | U72#(X) | U71#(X1, active(X2)) | → | U71#(X1, X2) | |
| active#(isNeList(V)) | → | isPalListKind#(V) | U21#(X1, active(X2), X3) | → | U21#(X1, X2, X3) | |
| U41#(active(X1), X2, X3) | → | U41#(X1, X2, X3) | mark#(U21(X1, X2, X3)) | → | mark#(X1) | |
| active#(U43(tt)) | → | mark#(tt) | and#(active(X1), X2) | → | and#(X1, X2) | |
| mark#(U52(X1, X2)) | → | active#(U52(mark(X1), X2)) | U42#(X1, active(X2)) | → | U42#(X1, X2) | |
| active#(isList(__(V1, V2))) | → | mark#(U21(and(isPalListKind(V1), isPalListKind(V2)), V1, V2)) | isPal#(mark(X)) | → | isPal#(X) | |
| mark#(isPal(X)) | → | isPal#(X) | U22#(X1, mark(X2)) | → | U22#(X1, X2) | |
| active#(isPal(V)) | → | isPalListKind#(V) | active#(isPalListKind(i)) | → | mark#(tt) | |
| mark#(isNePal(X)) | → | active#(isNePal(X)) | U31#(X1, mark(X2)) | → | U31#(X1, X2) | |
| active#(isList(__(V1, V2))) | → | and#(isPalListKind(V1), isPalListKind(V2)) | active#(isList(__(V1, V2))) | → | isPalListKind#(V1) | |
| mark#(U11(X1, X2)) | → | U11#(mark(X1), X2) | mark#(U71(X1, X2)) | → | active#(U71(mark(X1), X2)) | |
| U41#(mark(X1), X2, X3) | → | U41#(X1, X2, X3) | mark#(and(X1, X2)) | → | active#(and(mark(X1), X2)) | |
| active#(U61(tt, V)) | → | isQid#(V) | active#(isNePal(__(I, __(P, I)))) | → | isPal#(P) | |
| isQid#(active(X)) | → | isQid#(X) | U32#(active(X)) | → | U32#(X) | |
| mark#(U12(X)) | → | mark#(X) | isNePal#(active(X)) | → | isNePal#(X) | |
| mark#(U52(X1, X2)) | → | mark#(X1) | active#(U61(tt, V)) | → | U62#(isQid(V)) | |
| U51#(X1, X2, mark(X3)) | → | U51#(X1, X2, X3) | active#(isNePal(__(I, __(P, I)))) | → | isQid#(I) | |
| U41#(X1, mark(X2), X3) | → | U41#(X1, X2, X3) | active#(and(tt, X)) | → | mark#(X) | |
| active#(isQid(u)) | → | mark#(tt) | active#(U22(tt, V2)) | → | isList#(V2) | |
| U31#(mark(X1), X2) | → | U31#(X1, X2) | active#(U23(tt)) | → | mark#(tt) | |
| U71#(active(X1), X2) | → | U71#(X1, X2) | active#(isList(__(V1, V2))) | → | U21#(and(isPalListKind(V1), isPalListKind(V2)), V1, V2) | |
| U72#(active(X)) | → | U72#(X) | mark#(U21(X1, X2, X3)) | → | active#(U21(mark(X1), X2, X3)) | |
| active#(U42(tt, V2)) | → | isNeList#(V2) |
| active(__(__(X, Y), Z)) | → | mark(__(X, __(Y, Z))) | active(__(X, nil)) | → | mark(X) | |
| active(__(nil, X)) | → | mark(X) | active(U11(tt, V)) | → | mark(U12(isNeList(V))) | |
| active(U12(tt)) | → | mark(tt) | active(U21(tt, V1, V2)) | → | mark(U22(isList(V1), V2)) | |
| active(U22(tt, V2)) | → | mark(U23(isList(V2))) | active(U23(tt)) | → | mark(tt) | |
| active(U31(tt, V)) | → | mark(U32(isQid(V))) | active(U32(tt)) | → | mark(tt) | |
| active(U41(tt, V1, V2)) | → | mark(U42(isList(V1), V2)) | active(U42(tt, V2)) | → | mark(U43(isNeList(V2))) | |
| active(U43(tt)) | → | mark(tt) | active(U51(tt, V1, V2)) | → | mark(U52(isNeList(V1), V2)) | |
| active(U52(tt, V2)) | → | mark(U53(isList(V2))) | active(U53(tt)) | → | mark(tt) | |
| active(U61(tt, V)) | → | mark(U62(isQid(V))) | active(U62(tt)) | → | mark(tt) | |
| active(U71(tt, V)) | → | mark(U72(isNePal(V))) | active(U72(tt)) | → | mark(tt) | |
| active(and(tt, X)) | → | mark(X) | active(isList(V)) | → | mark(U11(isPalListKind(V), V)) | |
| active(isList(nil)) | → | mark(tt) | active(isList(__(V1, V2))) | → | mark(U21(and(isPalListKind(V1), isPalListKind(V2)), V1, V2)) | |
| active(isNeList(V)) | → | mark(U31(isPalListKind(V), V)) | active(isNeList(__(V1, V2))) | → | mark(U41(and(isPalListKind(V1), isPalListKind(V2)), V1, V2)) | |
| active(isNeList(__(V1, V2))) | → | mark(U51(and(isPalListKind(V1), isPalListKind(V2)), V1, V2)) | active(isNePal(V)) | → | mark(U61(isPalListKind(V), V)) | |
| active(isNePal(__(I, __(P, I)))) | → | mark(and(and(isQid(I), isPalListKind(I)), and(isPal(P), isPalListKind(P)))) | active(isPal(V)) | → | mark(U71(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(and(isPalListKind(V1), isPalListKind(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) | mark(__(X1, X2)) | → | active(__(mark(X1), mark(X2))) | |
| mark(nil) | → | active(nil) | mark(U11(X1, X2)) | → | active(U11(mark(X1), X2)) | |
| mark(tt) | → | active(tt) | mark(U12(X)) | → | active(U12(mark(X))) | |
| mark(isNeList(X)) | → | active(isNeList(X)) | mark(U21(X1, X2, X3)) | → | active(U21(mark(X1), X2, X3)) | |
| mark(U22(X1, X2)) | → | active(U22(mark(X1), X2)) | mark(isList(X)) | → | active(isList(X)) | |
| mark(U23(X)) | → | active(U23(mark(X))) | mark(U31(X1, X2)) | → | active(U31(mark(X1), X2)) | |
| mark(U32(X)) | → | active(U32(mark(X))) | mark(isQid(X)) | → | active(isQid(X)) | |
| mark(U41(X1, X2, X3)) | → | active(U41(mark(X1), X2, X3)) | mark(U42(X1, X2)) | → | active(U42(mark(X1), X2)) | |
| mark(U43(X)) | → | active(U43(mark(X))) | mark(U51(X1, X2, X3)) | → | active(U51(mark(X1), X2, X3)) | |
| mark(U52(X1, X2)) | → | active(U52(mark(X1), X2)) | mark(U53(X)) | → | active(U53(mark(X))) | |
| mark(U61(X1, X2)) | → | active(U61(mark(X1), X2)) | mark(U62(X)) | → | active(U62(mark(X))) | |
| mark(U71(X1, X2)) | → | active(U71(mark(X1), X2)) | mark(U72(X)) | → | active(U72(mark(X))) | |
| mark(isNePal(X)) | → | active(isNePal(X)) | mark(and(X1, X2)) | → | active(and(mark(X1), X2)) | |
| mark(isPalListKind(X)) | → | active(isPalListKind(X)) | mark(isPal(X)) | → | active(isPal(X)) | |
| mark(a) | → | active(a) | mark(e) | → | active(e) | |
| mark(i) | → | active(i) | mark(o) | → | active(o) | |
| mark(u) | → | active(u) | __(mark(X1), X2) | → | __(X1, X2) | |
| __(X1, mark(X2)) | → | __(X1, X2) | __(active(X1), X2) | → | __(X1, X2) | |
| __(X1, active(X2)) | → | __(X1, X2) | U11(mark(X1), X2) | → | U11(X1, X2) | |
| U11(X1, mark(X2)) | → | U11(X1, X2) | U11(active(X1), X2) | → | U11(X1, X2) | |
| U11(X1, active(X2)) | → | U11(X1, X2) | U12(mark(X)) | → | U12(X) | |
| U12(active(X)) | → | U12(X) | isNeList(mark(X)) | → | isNeList(X) | |
| isNeList(active(X)) | → | isNeList(X) | U21(mark(X1), X2, X3) | → | U21(X1, X2, X3) | |
| U21(X1, mark(X2), X3) | → | U21(X1, X2, X3) | U21(X1, X2, mark(X3)) | → | U21(X1, X2, X3) | |
| U21(active(X1), X2, X3) | → | U21(X1, X2, X3) | U21(X1, active(X2), X3) | → | U21(X1, X2, X3) | |
| U21(X1, X2, active(X3)) | → | U21(X1, X2, X3) | U22(mark(X1), X2) | → | U22(X1, X2) | |
| U22(X1, mark(X2)) | → | U22(X1, X2) | U22(active(X1), X2) | → | U22(X1, X2) | |
| U22(X1, active(X2)) | → | U22(X1, X2) | isList(mark(X)) | → | isList(X) | |
| isList(active(X)) | → | isList(X) | U23(mark(X)) | → | U23(X) | |
| U23(active(X)) | → | U23(X) | U31(mark(X1), X2) | → | U31(X1, X2) | |
| U31(X1, mark(X2)) | → | U31(X1, X2) | U31(active(X1), X2) | → | U31(X1, X2) | |
| U31(X1, active(X2)) | → | U31(X1, X2) | U32(mark(X)) | → | U32(X) | |
| U32(active(X)) | → | U32(X) | isQid(mark(X)) | → | isQid(X) | |
| isQid(active(X)) | → | isQid(X) | U41(mark(X1), X2, X3) | → | U41(X1, X2, X3) | |
| U41(X1, mark(X2), X3) | → | U41(X1, X2, X3) | U41(X1, X2, mark(X3)) | → | U41(X1, X2, X3) | |
| U41(active(X1), X2, X3) | → | U41(X1, X2, X3) | U41(X1, active(X2), X3) | → | U41(X1, X2, X3) | |
| U41(X1, X2, active(X3)) | → | U41(X1, X2, X3) | U42(mark(X1), X2) | → | U42(X1, X2) | |
| U42(X1, mark(X2)) | → | U42(X1, X2) | U42(active(X1), X2) | → | U42(X1, X2) | |
| U42(X1, active(X2)) | → | U42(X1, X2) | U43(mark(X)) | → | U43(X) | |
| U43(active(X)) | → | U43(X) | U51(mark(X1), X2, X3) | → | U51(X1, X2, X3) | |
| U51(X1, mark(X2), X3) | → | U51(X1, X2, X3) | U51(X1, X2, mark(X3)) | → | U51(X1, X2, X3) | |
| U51(active(X1), X2, X3) | → | U51(X1, X2, X3) | U51(X1, active(X2), X3) | → | U51(X1, X2, X3) | |
| U51(X1, X2, active(X3)) | → | U51(X1, X2, X3) | U52(mark(X1), X2) | → | U52(X1, X2) | |
| U52(X1, mark(X2)) | → | U52(X1, X2) | U52(active(X1), X2) | → | U52(X1, X2) | |
| U52(X1, active(X2)) | → | U52(X1, X2) | U53(mark(X)) | → | U53(X) | |
| U53(active(X)) | → | U53(X) | U61(mark(X1), X2) | → | U61(X1, X2) | |
| U61(X1, mark(X2)) | → | U61(X1, X2) | U61(active(X1), X2) | → | U61(X1, X2) | |
| U61(X1, active(X2)) | → | U61(X1, X2) | U62(mark(X)) | → | U62(X) | |
| U62(active(X)) | → | U62(X) | U71(mark(X1), X2) | → | U71(X1, X2) | |
| U71(X1, mark(X2)) | → | U71(X1, X2) | U71(active(X1), X2) | → | U71(X1, X2) | |
| U71(X1, active(X2)) | → | U71(X1, X2) | U72(mark(X)) | → | U72(X) | |
| U72(active(X)) | → | U72(X) | isNePal(mark(X)) | → | isNePal(X) | |
| isNePal(active(X)) | → | isNePal(X) | and(mark(X1), X2) | → | and(X1, X2) | |
| and(X1, mark(X2)) | → | and(X1, X2) | and(active(X1), X2) | → | and(X1, X2) | |
| and(X1, active(X2)) | → | and(X1, X2) | isPalListKind(mark(X)) | → | isPalListKind(X) | |
| isPalListKind(active(X)) | → | isPalListKind(X) | isPal(mark(X)) | → | isPal(X) | |
| isPal(active(X)) | → | isPal(X) |
Termination of terms over the following signature is verified: isList, isNeList, __, U62, U43, U61, U42, U41, isNePal, U23, U21, U22, e, isPalListKind, a, o, mark, isPal, i, and, U71, U72, u, U51, tt, U53, U52, U11, active, U12, isQid, U31, U32, nil