MAYBE
0.08/0.19	MAYBE
0.08/0.19	
0.08/0.19	Problem:
0.08/0.19	 eq(0(),0()) -> true()
0.08/0.19	 eq(0(),s(x)) -> false()
0.08/0.19	 eq(s(x),0()) -> false()
0.08/0.19	 eq(s(x),s(y)) -> eq(x,y)
0.08/0.19	 or(true(),y) -> true()
0.08/0.19	 or(false(),y) -> y
0.08/0.19	 and(true(),y) -> y
0.08/0.19	 and(false(),y) -> false()
0.08/0.19	 size(empty()) -> 0()
0.08/0.19	 size(edge(x,y,i)) -> s(size(i))
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	 reachable(x,y,i) -> reach(x,y,0(),i,i)
0.08/0.19	 reach(x,y,c,i,j) -> if1(eq(x,y),x,y,c,i,j)
0.08/0.19	 if1(true(),x,y,c,i,j) -> true()
0.08/0.19	 if1(false(),x,y,c,i,j) -> if2(le(c,size(j)),x,y,c,i,j)
0.08/0.19	 if2(false(),x,y,c,i,j) -> false()
0.08/0.19	 if2(true(),x,y,c,empty(),j) -> false()
0.08/0.19	 if2(true(),x,y,c,edge(u,v,i),j) -> or(if2(true(),x,y,c,i,j),and(eq(x,u),reach(v,y,s(c),j,j)))
0.08/0.19	
0.08/0.19	Proof:
0.08/0.19	 Open
0.08/0.19	EOF