YES We show the termination of the TRS R: g(|0|()) -> |0|() g(s(x)) -> f(g(x)) f(|0|()) -> |0|() -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: g#(s(x)) -> f#(g(x)) p2: g#(s(x)) -> g#(x) and R consists of: r1: g(|0|()) -> |0|() r2: g(s(x)) -> f(g(x)) r3: f(|0|()) -> |0|() The estimated dependency graph contains the following SCCs: {p2} -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: g#(s(x)) -> g#(x) and R consists of: r1: g(|0|()) -> |0|() r2: g(s(x)) -> f(g(x)) r3: f(|0|()) -> |0|() The set of usable rules consists of r3 Take the reduction pair: generalized weighted path order (>=MG, >G) base order 1: matrix interpretation with standard point-wise order: carrier: N^1 order: standard order interpretations: g#_A(x1) = x1 s_A(x1) = x1 + 3 f_A(x1) = x1 + 1 |0|_A() = 1 base order 2: marked-algebra reduction triple (>=A, >=A!, >A!): matrix interpretation with standard point-wise order: carrier: N^1 order: standard order interpretations: g#_A(x1) = 0 s_A(x1) = x1 + 1 f_A(x1) = x1 + 1 |0|_A() = 2 g#!_A(x1) = 0 s!_A(x1) = 1 f!_A(x1) = 3 |0|!_A() = 0 partial status: pi(g#) = [1] pi(s) = [1] pi(f) = [1] pi(|0|) = [] The following rules are removed: p1 Then no dependency pair remains.