MAYBE
0.08/0.17	MAYBE
0.08/0.17	
0.08/0.17	Problem:
0.08/0.17	 plus(0(),x) -> x
0.08/0.17	 plus(s(x),y) -> s(plus(p(s(x)),y))
0.08/0.17	 times(0(),y) -> 0()
0.08/0.17	 times(s(x),y) -> plus(y,times(p(s(x)),y))
0.08/0.17	 p(s(0())) -> 0()
0.08/0.17	 p(s(s(x))) -> s(p(s(x)))
0.08/0.17	 fac(0(),x) -> x
0.08/0.17	 fac(s(x),y) -> fac(p(s(x)),times(s(x),y))
0.08/0.17	 factorial(x) -> fac(x,s(0()))
0.08/0.17	
0.08/0.17	Proof:
0.08/0.17	 Open
0.08/0.18	EOF