YES


Termination: (Ranking Functions Found)
------------
l0: < < x_0 > >
l1: < < x_0 > >
l2: < < y_0 > >
l3: < < y_0 > >
l4: < < -x_0 + z_0 > >
l5: < < -x_0 + z_0 > >
l6: < < y_0 -z_0 > >
l7: < < y_0 -z_0 > >


method 1