YES We show the termination of the TRS R: g(x,y) -> x g(x,y) -> y f(|0|(),|1|(),x) -> f(s(x),x,x) f(x,y,s(z)) -> s(f(|0|(),|1|(),z)) -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: f#(|0|(),|1|(),x) -> f#(s(x),x,x) p2: f#(x,y,s(z)) -> f#(|0|(),|1|(),z) and R consists of: r1: g(x,y) -> x r2: g(x,y) -> y r3: f(|0|(),|1|(),x) -> f(s(x),x,x) r4: f(x,y,s(z)) -> s(f(|0|(),|1|(),z)) The estimated dependency graph contains the following SCCs: {p1, p2} -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: f#(|0|(),|1|(),x) -> f#(s(x),x,x) p2: f#(x,y,s(z)) -> f#(|0|(),|1|(),z) and R consists of: r1: g(x,y) -> x r2: g(x,y) -> y r3: f(|0|(),|1|(),x) -> f(s(x),x,x) r4: f(x,y,s(z)) -> s(f(|0|(),|1|(),z)) The set of usable rules consists of r1, r2 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: matrix interpretation with standard point-wise order: carrier: N^1 order: standard order interpretations: f#_A(x1,x2,x3) = x3 + 2 |0|_A() = 4 |1|_A() = 6 s_A(x1) = x1 + 3 g_A(x1,x2) = x1 + x2 + 1 base order 2: precedence: |1| > f# = |0| = s = g partial status: pi(f#) = [3] pi(|0|) = [] pi(|1|) = [] pi(s) = [1] pi(g) = [1, 2] The following rules are removed: p2 -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: f#(|0|(),|1|(),x) -> f#(s(x),x,x) and R consists of: r1: g(x,y) -> x r2: g(x,y) -> y r3: f(|0|(),|1|(),x) -> f(s(x),x,x) r4: f(x,y,s(z)) -> s(f(|0|(),|1|(),z)) The estimated dependency graph contains the following SCCs: (no SCCs)