YES weighted path orer with linear polynomial on natural numbers: -_A(x1,x2) = x1 + 1 s_A(x1) = x1 + 2 0_A = 0 precedence: 0 > - > s status: -: [1] s: [1] 0: [] the condition -(x,x) ->> s(x) is unsatisfiable for all substitutions.