YES Problem 1: (VAR v_NonEmpty:S X:S X1:S X2:S Y:S Z:S) (RULES active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ) (STRATEGY INNERMOST) Problem 1: Dependency Pairs Processor: -> Pairs: ACTIVE(add(s(X:S),Y:S)) -> ADD(X:S,Y:S) ACTIVE(add(s(X:S),Y:S)) -> S(add(X:S,Y:S)) ACTIVE(add(X1:S,X2:S)) -> ACTIVE(X1:S) ACTIVE(add(X1:S,X2:S)) -> ACTIVE(X2:S) ACTIVE(add(X1:S,X2:S)) -> ADD(active(X1:S),X2:S) ACTIVE(add(X1:S,X2:S)) -> ADD(X1:S,active(X2:S)) ACTIVE(cons(X1:S,X2:S)) -> ACTIVE(X1:S) ACTIVE(cons(X1:S,X2:S)) -> CONS(active(X1:S),X2:S) ACTIVE(from(X:S)) -> ACTIVE(X:S) ACTIVE(from(X:S)) -> CONS(X:S,from(s(X:S))) ACTIVE(from(X:S)) -> FROM(active(X:S)) ACTIVE(from(X:S)) -> FROM(s(X:S)) ACTIVE(from(X:S)) -> S(X:S) ACTIVE(fst(s(X:S),cons(Y:S,Z:S))) -> CONS(Y:S,fst(X:S,Z:S)) ACTIVE(fst(s(X:S),cons(Y:S,Z:S))) -> FST(X:S,Z:S) ACTIVE(fst(X1:S,X2:S)) -> ACTIVE(X1:S) ACTIVE(fst(X1:S,X2:S)) -> ACTIVE(X2:S) ACTIVE(fst(X1:S,X2:S)) -> FST(active(X1:S),X2:S) ACTIVE(fst(X1:S,X2:S)) -> FST(X1:S,active(X2:S)) ACTIVE(len(cons(X:S,Z:S))) -> LEN(Z:S) ACTIVE(len(cons(X:S,Z:S))) -> S(len(Z:S)) ACTIVE(len(X:S)) -> ACTIVE(X:S) ACTIVE(len(X:S)) -> LEN(active(X:S)) ADD(mark(X1:S),X2:S) -> ADD(X1:S,X2:S) ADD(ok(X1:S),ok(X2:S)) -> ADD(X1:S,X2:S) ADD(X1:S,mark(X2:S)) -> ADD(X1:S,X2:S) CONS(mark(X1:S),X2:S) -> CONS(X1:S,X2:S) CONS(ok(X1:S),ok(X2:S)) -> CONS(X1:S,X2:S) FROM(mark(X:S)) -> FROM(X:S) FROM(ok(X:S)) -> FROM(X:S) FST(mark(X1:S),X2:S) -> FST(X1:S,X2:S) FST(ok(X1:S),ok(X2:S)) -> FST(X1:S,X2:S) FST(X1:S,mark(X2:S)) -> FST(X1:S,X2:S) LEN(mark(X:S)) -> LEN(X:S) LEN(ok(X:S)) -> LEN(X:S) PROPER(add(X1:S,X2:S)) -> ADD(proper(X1:S),proper(X2:S)) PROPER(add(X1:S,X2:S)) -> PROPER(X1:S) PROPER(add(X1:S,X2:S)) -> PROPER(X2:S) PROPER(cons(X1:S,X2:S)) -> CONS(proper(X1:S),proper(X2:S)) PROPER(cons(X1:S,X2:S)) -> PROPER(X1:S) PROPER(cons(X1:S,X2:S)) -> PROPER(X2:S) PROPER(from(X:S)) -> FROM(proper(X:S)) PROPER(from(X:S)) -> PROPER(X:S) PROPER(fst(X1:S,X2:S)) -> FST(proper(X1:S),proper(X2:S)) PROPER(fst(X1:S,X2:S)) -> PROPER(X1:S) PROPER(fst(X1:S,X2:S)) -> PROPER(X2:S) PROPER(len(X:S)) -> LEN(proper(X:S)) PROPER(len(X:S)) -> PROPER(X:S) PROPER(s(X:S)) -> PROPER(X:S) PROPER(s(X:S)) -> S(proper(X:S)) S(ok(X:S)) -> S(X:S) TOP(mark(X:S)) -> PROPER(X:S) TOP(mark(X:S)) -> TOP(proper(X:S)) TOP(ok(X:S)) -> ACTIVE(X:S) TOP(ok(X:S)) -> TOP(active(X:S)) -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) Problem 1: SCC Processor: -> Pairs: ACTIVE(add(s(X:S),Y:S)) -> ADD(X:S,Y:S) ACTIVE(add(s(X:S),Y:S)) -> S(add(X:S,Y:S)) ACTIVE(add(X1:S,X2:S)) -> ACTIVE(X1:S) ACTIVE(add(X1:S,X2:S)) -> ACTIVE(X2:S) ACTIVE(add(X1:S,X2:S)) -> ADD(active(X1:S),X2:S) ACTIVE(add(X1:S,X2:S)) -> ADD(X1:S,active(X2:S)) ACTIVE(cons(X1:S,X2:S)) -> ACTIVE(X1:S) ACTIVE(cons(X1:S,X2:S)) -> CONS(active(X1:S),X2:S) ACTIVE(from(X:S)) -> ACTIVE(X:S) ACTIVE(from(X:S)) -> CONS(X:S,from(s(X:S))) ACTIVE(from(X:S)) -> FROM(active(X:S)) ACTIVE(from(X:S)) -> FROM(s(X:S)) ACTIVE(from(X:S)) -> S(X:S) ACTIVE(fst(s(X:S),cons(Y:S,Z:S))) -> CONS(Y:S,fst(X:S,Z:S)) ACTIVE(fst(s(X:S),cons(Y:S,Z:S))) -> FST(X:S,Z:S) ACTIVE(fst(X1:S,X2:S)) -> ACTIVE(X1:S) ACTIVE(fst(X1:S,X2:S)) -> ACTIVE(X2:S) ACTIVE(fst(X1:S,X2:S)) -> FST(active(X1:S),X2:S) ACTIVE(fst(X1:S,X2:S)) -> FST(X1:S,active(X2:S)) ACTIVE(len(cons(X:S,Z:S))) -> LEN(Z:S) ACTIVE(len(cons(X:S,Z:S))) -> S(len(Z:S)) ACTIVE(len(X:S)) -> ACTIVE(X:S) ACTIVE(len(X:S)) -> LEN(active(X:S)) ADD(mark(X1:S),X2:S) -> ADD(X1:S,X2:S) ADD(ok(X1:S),ok(X2:S)) -> ADD(X1:S,X2:S) ADD(X1:S,mark(X2:S)) -> ADD(X1:S,X2:S) CONS(mark(X1:S),X2:S) -> CONS(X1:S,X2:S) CONS(ok(X1:S),ok(X2:S)) -> CONS(X1:S,X2:S) FROM(mark(X:S)) -> FROM(X:S) FROM(ok(X:S)) -> FROM(X:S) FST(mark(X1:S),X2:S) -> FST(X1:S,X2:S) FST(ok(X1:S),ok(X2:S)) -> FST(X1:S,X2:S) FST(X1:S,mark(X2:S)) -> FST(X1:S,X2:S) LEN(mark(X:S)) -> LEN(X:S) LEN(ok(X:S)) -> LEN(X:S) PROPER(add(X1:S,X2:S)) -> ADD(proper(X1:S),proper(X2:S)) PROPER(add(X1:S,X2:S)) -> PROPER(X1:S) PROPER(add(X1:S,X2:S)) -> PROPER(X2:S) PROPER(cons(X1:S,X2:S)) -> CONS(proper(X1:S),proper(X2:S)) PROPER(cons(X1:S,X2:S)) -> PROPER(X1:S) PROPER(cons(X1:S,X2:S)) -> PROPER(X2:S) PROPER(from(X:S)) -> FROM(proper(X:S)) PROPER(from(X:S)) -> PROPER(X:S) PROPER(fst(X1:S,X2:S)) -> FST(proper(X1:S),proper(X2:S)) PROPER(fst(X1:S,X2:S)) -> PROPER(X1:S) PROPER(fst(X1:S,X2:S)) -> PROPER(X2:S) PROPER(len(X:S)) -> LEN(proper(X:S)) PROPER(len(X:S)) -> PROPER(X:S) PROPER(s(X:S)) -> PROPER(X:S) PROPER(s(X:S)) -> S(proper(X:S)) S(ok(X:S)) -> S(X:S) TOP(mark(X:S)) -> PROPER(X:S) TOP(mark(X:S)) -> TOP(proper(X:S)) TOP(ok(X:S)) -> ACTIVE(X:S) TOP(ok(X:S)) -> TOP(active(X:S)) -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: S(ok(X:S)) -> S(X:S) ->->-> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->->Cycle: ->->-> Pairs: LEN(mark(X:S)) -> LEN(X:S) LEN(ok(X:S)) -> LEN(X:S) ->->-> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->->Cycle: ->->-> Pairs: FST(mark(X1:S),X2:S) -> FST(X1:S,X2:S) FST(ok(X1:S),ok(X2:S)) -> FST(X1:S,X2:S) FST(X1:S,mark(X2:S)) -> FST(X1:S,X2:S) ->->-> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->->Cycle: ->->-> Pairs: FROM(mark(X:S)) -> FROM(X:S) FROM(ok(X:S)) -> FROM(X:S) ->->-> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->->Cycle: ->->-> Pairs: CONS(mark(X1:S),X2:S) -> CONS(X1:S,X2:S) CONS(ok(X1:S),ok(X2:S)) -> CONS(X1:S,X2:S) ->->-> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->->Cycle: ->->-> Pairs: ADD(mark(X1:S),X2:S) -> ADD(X1:S,X2:S) ADD(ok(X1:S),ok(X2:S)) -> ADD(X1:S,X2:S) ADD(X1:S,mark(X2:S)) -> ADD(X1:S,X2:S) ->->-> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->->Cycle: ->->-> Pairs: PROPER(add(X1:S,X2:S)) -> PROPER(X1:S) PROPER(add(X1:S,X2:S)) -> PROPER(X2:S) PROPER(cons(X1:S,X2:S)) -> PROPER(X1:S) PROPER(cons(X1:S,X2:S)) -> PROPER(X2:S) PROPER(from(X:S)) -> PROPER(X:S) PROPER(fst(X1:S,X2:S)) -> PROPER(X1:S) PROPER(fst(X1:S,X2:S)) -> PROPER(X2:S) PROPER(len(X:S)) -> PROPER(X:S) PROPER(s(X:S)) -> PROPER(X:S) ->->-> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->->Cycle: ->->-> Pairs: ACTIVE(add(X1:S,X2:S)) -> ACTIVE(X1:S) ACTIVE(add(X1:S,X2:S)) -> ACTIVE(X2:S) ACTIVE(cons(X1:S,X2:S)) -> ACTIVE(X1:S) ACTIVE(from(X:S)) -> ACTIVE(X:S) ACTIVE(fst(X1:S,X2:S)) -> ACTIVE(X1:S) ACTIVE(fst(X1:S,X2:S)) -> ACTIVE(X2:S) ACTIVE(len(X:S)) -> ACTIVE(X:S) ->->-> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->->Cycle: ->->-> Pairs: TOP(mark(X:S)) -> TOP(proper(X:S)) TOP(ok(X:S)) -> TOP(active(X:S)) ->->-> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) The problem is decomposed in 9 subproblems. Problem 1.1: Subterm Processor: -> Pairs: S(ok(X:S)) -> S(X:S) -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Projection: pi(S) = 1 Problem 1.1: SCC Processor: -> Pairs: Empty -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Strongly Connected Components: There is no strongly connected component The problem is finite. Problem 1.2: Subterm Processor: -> Pairs: LEN(mark(X:S)) -> LEN(X:S) LEN(ok(X:S)) -> LEN(X:S) -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Projection: pi(LEN) = 1 Problem 1.2: SCC Processor: -> Pairs: Empty -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Strongly Connected Components: There is no strongly connected component The problem is finite. Problem 1.3: Subterm Processor: -> Pairs: FST(mark(X1:S),X2:S) -> FST(X1:S,X2:S) FST(ok(X1:S),ok(X2:S)) -> FST(X1:S,X2:S) FST(X1:S,mark(X2:S)) -> FST(X1:S,X2:S) -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Projection: pi(FST) = 1 Problem 1.3: SCC Processor: -> Pairs: FST(X1:S,mark(X2:S)) -> FST(X1:S,X2:S) -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: FST(X1:S,mark(X2:S)) -> FST(X1:S,X2:S) ->->-> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) Problem 1.3: Subterm Processor: -> Pairs: FST(X1:S,mark(X2:S)) -> FST(X1:S,X2:S) -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Projection: pi(FST) = 2 Problem 1.3: SCC Processor: -> Pairs: Empty -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Strongly Connected Components: There is no strongly connected component The problem is finite. Problem 1.4: Subterm Processor: -> Pairs: FROM(mark(X:S)) -> FROM(X:S) FROM(ok(X:S)) -> FROM(X:S) -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Projection: pi(FROM) = 1 Problem 1.4: SCC Processor: -> Pairs: Empty -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Strongly Connected Components: There is no strongly connected component The problem is finite. Problem 1.5: Subterm Processor: -> Pairs: CONS(mark(X1:S),X2:S) -> CONS(X1:S,X2:S) CONS(ok(X1:S),ok(X2:S)) -> CONS(X1:S,X2:S) -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Projection: pi(CONS) = 1 Problem 1.5: SCC Processor: -> Pairs: Empty -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Strongly Connected Components: There is no strongly connected component The problem is finite. Problem 1.6: Subterm Processor: -> Pairs: ADD(mark(X1:S),X2:S) -> ADD(X1:S,X2:S) ADD(ok(X1:S),ok(X2:S)) -> ADD(X1:S,X2:S) ADD(X1:S,mark(X2:S)) -> ADD(X1:S,X2:S) -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Projection: pi(ADD) = 1 Problem 1.6: SCC Processor: -> Pairs: ADD(X1:S,mark(X2:S)) -> ADD(X1:S,X2:S) -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: ADD(X1:S,mark(X2:S)) -> ADD(X1:S,X2:S) ->->-> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) Problem 1.6: Subterm Processor: -> Pairs: ADD(X1:S,mark(X2:S)) -> ADD(X1:S,X2:S) -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Projection: pi(ADD) = 2 Problem 1.6: SCC Processor: -> Pairs: Empty -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Strongly Connected Components: There is no strongly connected component The problem is finite. Problem 1.7: Subterm Processor: -> Pairs: PROPER(add(X1:S,X2:S)) -> PROPER(X1:S) PROPER(add(X1:S,X2:S)) -> PROPER(X2:S) PROPER(cons(X1:S,X2:S)) -> PROPER(X1:S) PROPER(cons(X1:S,X2:S)) -> PROPER(X2:S) PROPER(from(X:S)) -> PROPER(X:S) PROPER(fst(X1:S,X2:S)) -> PROPER(X1:S) PROPER(fst(X1:S,X2:S)) -> PROPER(X2:S) PROPER(len(X:S)) -> PROPER(X:S) PROPER(s(X:S)) -> PROPER(X:S) -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Projection: pi(PROPER) = 1 Problem 1.7: SCC Processor: -> Pairs: Empty -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Strongly Connected Components: There is no strongly connected component The problem is finite. Problem 1.8: Subterm Processor: -> Pairs: ACTIVE(add(X1:S,X2:S)) -> ACTIVE(X1:S) ACTIVE(add(X1:S,X2:S)) -> ACTIVE(X2:S) ACTIVE(cons(X1:S,X2:S)) -> ACTIVE(X1:S) ACTIVE(from(X:S)) -> ACTIVE(X:S) ACTIVE(fst(X1:S,X2:S)) -> ACTIVE(X1:S) ACTIVE(fst(X1:S,X2:S)) -> ACTIVE(X2:S) ACTIVE(len(X:S)) -> ACTIVE(X:S) -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Projection: pi(ACTIVE) = 1 Problem 1.8: SCC Processor: -> Pairs: Empty -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Strongly Connected Components: There is no strongly connected component The problem is finite. Problem 1.9: Reduction Pairs Processor: -> Pairs: TOP(mark(X:S)) -> TOP(proper(X:S)) TOP(ok(X:S)) -> TOP(active(X:S)) -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) -> Usable rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) ->Interpretation type: Linear ->Coefficients: Natural Numbers ->Dimension: 1 ->Bound: 2 ->Interpretation: [active](X) = X [add](X1,X2) = 2.X1 + 2.X2 + 2 [cons](X1,X2) = X1 [from](X) = 2.X + 2 [fst](X1,X2) = 2.X1 + 2.X2 + 2 [len](X) = X + 2 [proper](X) = X [s](X) = 0 [top](X) = 0 [0] = 2 [fSNonEmpty] = 0 [mark](X) = X + 2 [nil] = 2 [ok](X) = X [ACTIVE](X) = 0 [ADD](X1,X2) = 0 [CONS](X1,X2) = 0 [FROM](X) = 0 [FST](X1,X2) = 0 [LEN](X) = 0 [PROPER](X) = 0 [S](X) = 0 [TOP](X) = 2.X Problem 1.9: SCC Processor: -> Pairs: TOP(ok(X:S)) -> TOP(active(X:S)) -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: TOP(ok(X:S)) -> TOP(active(X:S)) ->->-> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) Problem 1.9: Reduction Pairs Processor: -> Pairs: TOP(ok(X:S)) -> TOP(active(X:S)) -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) -> Usable rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) s(ok(X:S)) -> ok(s(X:S)) ->Interpretation type: Linear ->Coefficients: Natural Numbers ->Dimension: 1 ->Bound: 2 ->Interpretation: [active](X) = X [add](X1,X2) = 2.X1 + 2.X2 + 2 [cons](X1,X2) = 2.X2 + 2 [from](X) = 2.X + 2 [fst](X1,X2) = 2.X1 + 2.X2 + 1 [len](X) = 2.X [proper](X) = 0 [s](X) = 2.X + 2 [top](X) = 0 [0] = 2 [fSNonEmpty] = 0 [mark](X) = 2 [nil] = 2 [ok](X) = 2.X + 2 [ACTIVE](X) = 0 [ADD](X1,X2) = 0 [CONS](X1,X2) = 0 [FROM](X) = 0 [FST](X1,X2) = 0 [LEN](X) = 0 [PROPER](X) = 0 [S](X) = 0 [TOP](X) = X Problem 1.9: SCC Processor: -> Pairs: Empty -> Rules: active(add(s(X:S),Y:S)) -> mark(s(add(X:S,Y:S))) active(add(0,X:S)) -> mark(X:S) active(add(X1:S,X2:S)) -> add(active(X1:S),X2:S) active(add(X1:S,X2:S)) -> add(X1:S,active(X2:S)) active(cons(X1:S,X2:S)) -> cons(active(X1:S),X2:S) active(from(X:S)) -> from(active(X:S)) active(from(X:S)) -> mark(cons(X:S,from(s(X:S)))) active(fst(s(X:S),cons(Y:S,Z:S))) -> mark(cons(Y:S,fst(X:S,Z:S))) active(fst(0,Z:S)) -> mark(nil) active(fst(X1:S,X2:S)) -> fst(active(X1:S),X2:S) active(fst(X1:S,X2:S)) -> fst(X1:S,active(X2:S)) active(len(cons(X:S,Z:S))) -> mark(s(len(Z:S))) active(len(nil)) -> mark(0) active(len(X:S)) -> len(active(X:S)) add(mark(X1:S),X2:S) -> mark(add(X1:S,X2:S)) add(ok(X1:S),ok(X2:S)) -> ok(add(X1:S,X2:S)) add(X1:S,mark(X2:S)) -> mark(add(X1:S,X2:S)) cons(mark(X1:S),X2:S) -> mark(cons(X1:S,X2:S)) cons(ok(X1:S),ok(X2:S)) -> ok(cons(X1:S,X2:S)) from(mark(X:S)) -> mark(from(X:S)) from(ok(X:S)) -> ok(from(X:S)) fst(mark(X1:S),X2:S) -> mark(fst(X1:S,X2:S)) fst(ok(X1:S),ok(X2:S)) -> ok(fst(X1:S,X2:S)) fst(X1:S,mark(X2:S)) -> mark(fst(X1:S,X2:S)) len(mark(X:S)) -> mark(len(X:S)) len(ok(X:S)) -> ok(len(X:S)) proper(add(X1:S,X2:S)) -> add(proper(X1:S),proper(X2:S)) proper(cons(X1:S,X2:S)) -> cons(proper(X1:S),proper(X2:S)) proper(from(X:S)) -> from(proper(X:S)) proper(fst(X1:S,X2:S)) -> fst(proper(X1:S),proper(X2:S)) proper(len(X:S)) -> len(proper(X:S)) proper(s(X:S)) -> s(proper(X:S)) proper(0) -> ok(0) proper(nil) -> ok(nil) s(ok(X:S)) -> ok(s(X:S)) top(mark(X:S)) -> top(proper(X:S)) top(ok(X:S)) -> top(active(X:S)) ->Strongly Connected Components: There is no strongly connected component The problem is finite.