YES Problem 1: (VAR v_NonEmpty:S X:S Y:S) (RULES f(s(X:S),Y:S) -> h(s(f(h(Y:S),X:S))) ) Problem 1: Innermost Equivalent Processor: -> Rules: f(s(X:S),Y:S) -> h(s(f(h(Y:S),X:S))) -> The term rewriting system is non-overlaping or locally confluent overlay system. Therefore, innermost termination implies termination. Problem 1: Dependency Pairs Processor: -> Pairs: Empty -> Rules: f(s(X:S),Y:S) -> h(s(f(h(Y:S),X:S))) Problem 1: SCC Processor: -> Pairs: Empty -> Rules: f(s(X:S),Y:S) -> h(s(f(h(Y:S),X:S))) ->Strongly Connected Components: There is no strongly connected component The problem is finite.