MAYBE
0.08/0.18	MAYBE
0.08/0.18	
0.08/0.18	Problem:
0.08/0.18	 leq(0(),y) -> true()
0.08/0.18	 leq(s(x),0()) -> false()
0.08/0.18	 leq(s(x),s(y)) -> leq(x,y)
0.08/0.18	 if(true(),x,y) -> x
0.08/0.18	 if(false(),x,y) -> y
0.08/0.18	 -(x,0()) -> x
0.08/0.18	 -(s(x),s(y)) -> -(x,y)
0.08/0.18	 mod(0(),y) -> 0()
0.08/0.18	 mod(s(x),0()) -> 0()
0.08/0.18	 mod(s(x),s(y)) -> if(leq(y,x),mod(-(s(x),s(y)),s(y)),s(x))
0.08/0.18	
0.08/0.18	Proof:
0.08/0.18	 Open
0.08/0.18	EOF