YES We show the termination of the TRS R: bin(x,|0|()) -> s(|0|()) bin(|0|(),s(y)) -> |0|() bin(s(x),s(y)) -> +(bin(x,s(y)),bin(x,y)) -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: bin#(s(x),s(y)) -> bin#(x,s(y)) p2: bin#(s(x),s(y)) -> bin#(x,y) and R consists of: r1: bin(x,|0|()) -> s(|0|()) r2: bin(|0|(),s(y)) -> |0|() r3: bin(s(x),s(y)) -> +(bin(x,s(y)),bin(x,y)) The estimated dependency graph contains the following SCCs: {p1, p2} -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: bin#(s(x),s(y)) -> bin#(x,s(y)) p2: bin#(s(x),s(y)) -> bin#(x,y) and R consists of: r1: bin(x,|0|()) -> s(|0|()) r2: bin(|0|(),s(y)) -> |0|() r3: bin(s(x),s(y)) -> +(bin(x,s(y)),bin(x,y)) The set of usable rules consists of (no rules) Take the reduction pair: lexicographic combination of reduction pairs: 1. weighted path order base order: max/plus interpretations on natural numbers: bin#_A(x1,x2) = max{0, x1 - 2} s_A(x1) = x1 + 4 precedence: bin# = s partial status: pi(bin#) = [] pi(s) = [1] 2. weighted path order base order: max/plus interpretations on natural numbers: bin#_A(x1,x2) = 0 s_A(x1) = x1 + 2 precedence: s > bin# partial status: pi(bin#) = [] pi(s) = [1] The next rules are strictly ordered: p1, p2 We remove them from the problem. Then no dependency pair remains.