MAYBE
0.08/0.19	MAYBE
0.08/0.19	
0.08/0.19	Problem:
0.08/0.19	 minus(x,0()) -> x
0.08/0.19	 minus(s(x),s(y)) -> minus(x,y)
0.08/0.19	 quot(0(),s(y)) -> 0()
0.08/0.19	 quot(s(x),s(y)) -> s(quot(minus(x,y),s(y)))
0.08/0.19	 le(0(),y) -> true()
0.08/0.19	 le(s(x),0()) -> false()
0.08/0.19	 le(s(x),s(y)) -> le(x,y)
0.08/0.19	 app(nil(),y) -> y
0.08/0.19	 app(add(n,x),y) -> add(n,app(x,y))
0.08/0.19	 low(n,nil()) -> nil()
0.08/0.19	 low(n,add(m,x)) -> if_low(le(m,n),n,add(m,x))
0.08/0.19	 if_low(true(),n,add(m,x)) -> add(m,low(n,x))
0.08/0.19	 if_low(false(),n,add(m,x)) -> low(n,x)
0.08/0.19	 high(n,nil()) -> nil()
0.08/0.19	 high(n,add(m,x)) -> if_high(le(m,n),n,add(m,x))
0.08/0.19	 if_high(true(),n,add(m,x)) -> high(n,x)
0.08/0.19	 if_high(false(),n,add(m,x)) -> add(m,high(n,x))
0.08/0.19	 quicksort(nil()) -> nil()
0.08/0.19	 quicksort(add(n,x)) -> app(quicksort(low(n,x)),add(n,quicksort(high(n,x))))
0.08/0.19	
0.08/0.19	Proof:
0.08/0.19	 Open
0.08/0.19	EOF