NO
Nontermination proof succeeded
Found this recurrent set for cutpoint 11: 0 <= arg1 and arg1 <= 0 and 0 <= arg1P and arg1P <= 0 and 0 <= arg2 and 0 <= arg2P and 1 <= x2 and arg1-arg2P <= 0 and 0 <= arg1+arg2P and arg1-x2 <= -1 and 1 <= arg1+x2 and arg1P-arg1 <= 0 and arg1-arg1P <= 0 and arg1P+arg1 <= 0 and 0 <= arg1P+arg1 and arg1P-arg2P <= 0 and 0 <= arg1P+arg2P and arg1P-x2 <= -1 and 1 <= arg1P+x2 and arg1-arg2 <= 0 and 0 <= arg2+arg1 and arg1P-arg2 <= 0 and 0 <= arg2+arg1P and arg2-arg2P <= 0 and arg2P-arg2 <= 0 and 0 <= arg2+arg2P and 1 <= arg2+x2 and 1 <= arg2P+x2 and 0 <= 0
Errors: