NO Problem 1: (VAR v_NonEmpty:S f:S n:S x:S xs:S) (RULES app(app(map,f:S),app(app(cons,x:S),xs:S)) -> app(app(cons,app(f:S,x:S)),app(app(map,f:S),xs:S)) app(app(map,f:S),nil) -> nil app(app(f:S,0),n:S) -> app(app(hd,app(app(map,f:S),app(app(cons,0),nil))),n:S) ) Problem 1: Dependency Pairs Processor: -> Pairs: APP(app(map,f:S),app(app(cons,x:S),xs:S)) -> APP(app(cons,app(f:S,x:S)),app(app(map,f:S),xs:S)) APP(app(map,f:S),app(app(cons,x:S),xs:S)) -> APP(app(map,f:S),xs:S) APP(app(map,f:S),app(app(cons,x:S),xs:S)) -> APP(cons,app(f:S,x:S)) APP(app(map,f:S),app(app(cons,x:S),xs:S)) -> APP(f:S,x:S) APP(app(f:S,0),n:S) -> APP(app(cons,0),nil) APP(app(f:S,0),n:S) -> APP(app(hd,app(app(map,f:S),app(app(cons,0),nil))),n:S) APP(app(f:S,0),n:S) -> APP(app(map,f:S),app(app(cons,0),nil)) APP(app(f:S,0),n:S) -> APP(hd,app(app(map,f:S),app(app(cons,0),nil))) -> Rules: app(app(map,f:S),app(app(cons,x:S),xs:S)) -> app(app(cons,app(f:S,x:S)),app(app(map,f:S),xs:S)) app(app(map,f:S),nil) -> nil app(app(f:S,0),n:S) -> app(app(hd,app(app(map,f:S),app(app(cons,0),nil))),n:S) Problem 1: Infinite Processor: -> Pairs: APP(app(map,f:S),app(app(cons,x:S),xs:S)) -> APP(app(cons,app(f:S,x:S)),app(app(map,f:S),xs:S)) APP(app(map,f:S),app(app(cons,x:S),xs:S)) -> APP(app(map,f:S),xs:S) APP(app(map,f:S),app(app(cons,x:S),xs:S)) -> APP(cons,app(f:S,x:S)) APP(app(map,f:S),app(app(cons,x:S),xs:S)) -> APP(f:S,x:S) APP(app(f:S,0),n:S) -> APP(app(cons,0),nil) APP(app(f:S,0),n:S) -> APP(app(hd,app(app(map,f:S),app(app(cons,0),nil))),n:S) APP(app(f:S,0),n:S) -> APP(app(map,f:S),app(app(cons,0),nil)) APP(app(f:S,0),n:S) -> APP(hd,app(app(map,f:S),app(app(cons,0),nil))) -> Rules: app(app(map,f:S),app(app(cons,x:S),xs:S)) -> app(app(cons,app(f:S,x:S)),app(app(map,f:S),xs:S)) app(app(map,f:S),nil) -> nil app(app(f:S,0),n:S) -> app(app(hd,app(app(map,f:S),app(app(cons,0),nil))),n:S) -> Pairs in cycle: APP(app(f:S,0),n:S) -> APP(app(cons,0),nil) The problem is infinite.