YES We show the termination of the TRS R: *(x,+(y,z)) -> +(*(x,y),*(x,z)) -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: *#(x,+(y,z)) -> *#(x,y) p2: *#(x,+(y,z)) -> *#(x,z) and R consists of: r1: *(x,+(y,z)) -> +(*(x,y),*(x,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: *#(x,+(y,z)) -> *#(x,y) p2: *#(x,+(y,z)) -> *#(x,z) and R consists of: r1: *(x,+(y,z)) -> +(*(x,y),*(x,z)) The set of usable rules consists of r1 Take the reduction pair: generalized weighted path order (>=MG, >G) base order 1: trivial reduction triple (T x T, T x T, Φ) base order 2: model-based reduction triple (=A, >=A!, >A!): finite algebra: carrier: {0,1} interpretations: *#_A(0,0) = 0 *#_A(0,1) = 0 *#_A(1,0) = 0 *#_A(1,1) = 0 +_A(0,0) = 0 +_A(0,1) = 0 +_A(1,0) = 0 +_A(1,1) = 0 *_A(0,0) = 0 *_A(0,1) = 1 *_A(1,0) = 0 *_A(1,1) = 1 *#!_A(0,0) = 0 *#!_A(0,1) = 0 *#!_A(1,0) = 0 *#!_A(1,1) = 0 +!_A(0,0) = 0 +!_A(0,1) = 0 +!_A(1,0) = 0 +!_A(1,1) = 0 *!_A(0,0) = 0 *!_A(0,1) = 0 *!_A(1,0) = 0 *!_A(1,1) = 0 partial status: pi(*#) = [2] pi(+) = [1, 2] pi(*) = [2] The following rules are removed: p1, p2 Then no dependency pair remains.