NO
Nontermination proof succeeded
Found this recurrent set for cutpoint 6: 1 <= x_1_0 and 1 <= x_1_post and 1 <= y_1_post and y_1_post <= 1 and x_1_post-x_1_0 <= 0 and x_1_0-x_1_post <= 0 and 2 <= x_1_post+x_1_0 and y_1_post-x_1_post <= 0 and 2 <= x_1_post+y_1_post and y_1_post-x_1_0 <= 0 and 2 <= y_1_post+x_1_0 and 0 <= 0
Errors: