YES Termination: (Ranking Functions Found) ------------ l0: < < N_0 -i_0 >, < N_0 -i_0 > > l1: < < -1 + N_0 -i_0 >, < -1 + N_0 -i_0 > > l2: < < N_0 -i_0 >, < N_0 -i_0 > > l4: < < N_0 -i_0 >, < N_0 -i_0 > > method 1