NO
Nontermination proof succeeded
Found this recurrent set for cutpoint 5: 2 <= arg1 and arg1 <= 2 and 2 <= arg1P and arg1P <= 2 and 0 <= arg2 and arg2 <= 14 and 0 <= arg2P and arg2P <= 14 and arg1-arg2P <= 0 and arg2P-arg1 <= 12 and arg1+arg2P <= 16 and 0 <= arg1+arg2P and arg1P-arg1 <= 0 and arg1-arg1P <= 0 and arg1P+arg1 <= 4 and 4 <= arg1P+arg1 and arg1P-arg2P <= 0 and arg2P-arg1P <= 12 and arg1P+arg2P <= 16 and 0 <= arg1P+arg2P and arg2-arg1 <= 12 and arg1-arg2 <= 0 and arg2+arg1 <= 16 and 0 <= arg2+arg1 and arg2-arg1P <= 12 and arg1P-arg2 <= 0 and arg2+arg1P <= 16 and 0 <= arg2+arg1P and arg2-arg2P <= 0 and arg2P-arg2 <= 0 and arg2+arg2P <= 28 and 0 <= arg2+arg2P and -arg1+1 <= 0 and -arg2+arg1+1 <= 0 and -arg2+3 <= 0
Errors: