YES TRS: from(X) -> cons(X,n__from(s(X))) after(0(),XS) -> XS after(s(N),cons(X,XS)) -> after(N,activate(XS)) from(X) -> n__from(X) activate(n__from(X)) -> from(X) activate(X) -> X max/plus interpretations on N: from_A(x1) = max{5, 3 + x1} from#_A(x1) = max{5, 3 + x1} cons_A(x1,x2) = max{5, 2 + x1, 3 + x2} cons#_A(x1,x2) = max{5, 2 + x1, 3 + x2} n__from_A(x1) = max{2, x1} n__from#_A(x1) = max{2, x1} s_A(x1) = max{1, x1} s#_A(x1) = max{1, x1} after_A(x1,x2) = max{2, 3 + x1, 1 + x2} after#_A(x1,x2) = max{2, 3 + x1, 1 + x2} 0_A = 0 0#_A = 0 activate_A(x1) = max{0, 3 + x1} activate#_A(x1) = max{0, 3 + x1} precedence: after > n__from = activate > from > cons = s = 0