YES Problem: f(0()) -> cons(0()) f(s(0())) -> f(p(s(0()))) p(s(0())) -> 0() Proof: DP Processor: DPs: f#(s(0())) -> p#(s(0())) f#(s(0())) -> f#(p(s(0()))) TRS: f(0()) -> cons(0()) f(s(0())) -> f(p(s(0()))) p(s(0())) -> 0() Arctic Interpretation Processor: dimension: 1 interpretation: [p#](x0) = -4x0 + 0, [f#](x0) = x0 + 0, [p](x0) = 1, [s](x0) = 4x0 + 2, [cons](x0) = -3x0 + 0, [f](x0) = x0 + 1, [0] = 0 orientation: f#(s(0())) = 4 >= 0 = p#(s(0())) f#(s(0())) = 4 >= 1 = f#(p(s(0()))) f(0()) = 1 >= 0 = cons(0()) f(s(0())) = 4 >= 1 = f(p(s(0()))) p(s(0())) = 1 >= 0 = 0() problem: DPs: TRS: f(0()) -> cons(0()) f(s(0())) -> f(p(s(0()))) p(s(0())) -> 0() Qed