YES Problem: f(s(X),Y) -> h(s(f(h(Y),X))) Proof: DP Processor: DPs: f#(s(X),Y) -> f#(h(Y),X) TRS: f(s(X),Y) -> h(s(f(h(Y),X))) Usable Rule Processor: DPs: f#(s(X),Y) -> f#(h(Y),X) TRS: Arctic Interpretation Processor: dimension: 1 usable rules: interpretation: [f#](x0, x1) = x0 + 2x1, [h](x0) = 1x0, [s](x0) = 7x0 orientation: f#(s(X),Y) = 7X + 2Y >= 2X + 1Y = f#(h(Y),X) problem: DPs: TRS: Qed