We consider termination of the MSTRS with no additional rule schemes: Signature: a :: o b :: o f :: o -> o -> o -> o g :: o -> o Rules: f(x, a, y) -> f(b, x, g(y)) The system is accessible function passing by a sort ordering that equates all sorts. We start by computing the initial DP problem D1 = (P1, R, i, c), where: P1. (1) f#(x, a, y) => f#(b, x, g(y)) ***** We apply the Reduction Pair [with HORPO] Processor on D1 = (P1, R, i, c). Constrained HORPO yields: f#(x, a, y) (>) f#(b, x, g(y)) f(x, a, y) (>=) f(b, x, g(y)) We do this using the following settings: * Disregarded arguments: f# 3 g 1 * Precedence and permutation: a { } > b { } = f# { 1 2 } = f { 1 2 3 } = g { } * Well-founded theory orderings: [>]_{Bool} = {(true,false)} [>]_{Int} = {(x,y) | x < 1000 /\ x < y } All dependency pairs were removed. Processor output: { }.