YES weighted path orer with linear polynomial on natural numbers: pos_A(x1) = x1 + 2 p_A(x1) = 1 false_A = 2 s_A(x1) = 5 true_A = 4 0_A = 1 precedence: true > false > 0 > s > p > pos status: pos: [1] p: [] false: [] s: [] true: [] 0: [] the condition pos(0()) ->> true() is unsatisfiable for all substitutions.