NO
Nontermination proof succeeded
Found this recurrent set for cutpoint 7: x_5_0-y_6_0 <= 0 and y_6_0-x_5_0 <= 0 and z_7_0-x_5_0 <= 0 and z_7_0-y_6_0 <= 0 and 0 <= 0
Errors: