MAYBE
0.08/0.18	MAYBE
0.08/0.18	
0.08/0.18	Problem:
0.08/0.18	 le(0(),y) -> true()
0.08/0.18	 le(s(x),0()) -> false()
0.08/0.18	 le(s(x),s(y)) -> le(x,y)
0.08/0.18	 minus(0(),y) -> 0()
0.08/0.18	 minus(s(x),y) -> if_minus(le(s(x),y),s(x),y)
0.08/0.18	 if_minus(true(),s(x),y) -> 0()
0.08/0.18	 if_minus(false(),s(x),y) -> s(minus(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_mod(le(y,x),s(x),s(y))
0.08/0.18	 if_mod(true(),s(x),s(y)) -> mod(minus(x,y),s(y))
0.08/0.18	 if_mod(false(),s(x),s(y)) -> s(x)
0.08/0.18	
0.08/0.18	Proof:
0.08/0.18	 Open
0.08/0.19	EOF