NO
Nontermination proof succeeded
Found this recurrent set for cutpoint 9: arg1 <= 0 and arg1P <= 0 and 2 <= arg2 and 0 <= x22 and 0 <= x23 and 0 <= x27 and 0 <= x28 and arg1-arg2 <= -2 and arg1-x22 <= 0 and arg1-x23 <= 0 and arg1-x27 <= 0 and arg1+x27 <= 0 and arg1-x28 <= 0 and arg1P-arg1 <= 0 and arg1-arg1P <= 0 and arg1P+arg1 <= 0 and arg1P-arg2 <= -2 and arg1P-x22 <= 0 and arg1P-x23 <= 0 and arg1P-x27 <= 0 and arg1P+x27 <= 0 and arg1P-x28 <= 0 and 2 <= arg2+x22 and 2 <= arg2+x23 and 2 <= arg2+x27 and 2 <= arg2+x28 and 0 <= x22+x23 and 0 <= x22+x27 and 0 <= x22+x28 and 0 <= x23+x27 and 0 <= x23+x28 and x24-x23 <= 0 and 0 <= x27+x28 and x29-x28 <= 0 and arg1+-2 <= 0 and arg1+1 <= 0
Errors: