YES This TRS is terminating using the deltasimple interpretation tt(delta5) = + 1 + 1*delta5 and(delta4, X5, X4) = + 1*X4 + 0*X5 + 0 + 0*X4*delta4 + 1*X5*delta4 + 0*delta4 0(delta3) = + 0 + 0*delta3 plus(delta2, X3, X2) = + 1*X2 + 1*X3 + 0 + 1*X2*delta2 + 0*X3*delta2 + 1*delta2 s(delta1, X1) = + 1*X1 + 1 + 0*X1*delta1 + 0*delta1 activate(delta0, X0) = + 1*X0 + 0 + 0*X0*delta0 + 1*delta0 and_tau_1(delta4) = + (delta4/(0 + 1 * delta4)) and_tau_2(delta4) = + (delta4/(1 + 0 * delta4)) plus_tau_1(delta2) = + (delta2/(1 + 0 * delta2)) plus_tau_2(delta2) = + (delta2/(1 + 1 * delta2)) s_tau_1(delta1) = + (delta1/(1 + 0 * delta1)) activate_tau_1(delta0) = + (delta0/(1 + 0 * delta0)) SUCCESS Statistics: Number of monomials: 129