YES TRS: f(x,0(),0()) -> s(x) f(0(),y,0()) -> s(y) f(0(),0(),z) -> s(z) f(s(0()),y,z) -> f(0(),s(y),s(z)) f(s(x),s(y),0()) -> f(x,y,s(0())) f(s(x),0(),s(z)) -> f(x,s(0()),z) f(0(),s(0()),s(0())) -> s(s(0())) f(s(x),s(y),s(z)) -> f(x,y,f(s(x),s(y),z)) f(0(),s(s(y)),s(0())) -> f(0(),y,s(0())) f(0(),s(0()),s(s(z))) -> f(0(),s(0()),z) f(0(),s(s(y)),s(s(z))) -> f(0(),y,f(0(),s(s(y)),s(z))) max/plus interpretations on N: f_A(x1,x2,x3) = max{7, 2 + x1, 4 + x2, x3} f#_A(x1,x2,x3) = max{7, 2 + x1, 4 + x2, x3} 0_A = 2 0#_A = 2 s_A(x1) = max{3, x1} s#_A(x1) = max{3, x1} precedence: f > s > 0