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