YES (VAR x0 x y) (RULES f(f(x0,0()),0()) -> x0 h(0()) -> s(0()) g(s(x),y) -> f(g(x,y),0()) g(0(),y) -> y f(s(x),y) -> s(f(x,y)) f(0(),y) -> y s(s(x)) -> x ) (COMMENT Termination is shown by ELPO with interpretations on natural numbers s_A(x1) = x1 + 2 f_A(x1,x2) = x1 + x2 + 1 0_A = 1 g_A(x1,x2) = x1 + x2 h_A(x1) = 3 f#_A(x1,x2) = x2 0#_A = 0 h#_A(x1) = x1 and precedence: g > f > h > s > 0 )