MAYBE 0.08/0.18 MAYBE 0.08/0.18 0.08/0.18 Problem: 0.08/0.18 cond(true(),x,y,z) -> cond(and(gr(x,z),gr(y,z)),p(x),p(y),z) 0.08/0.18 and(true(),true()) -> true() 0.08/0.18 and(x,false()) -> false() 0.08/0.18 and(false(),x) -> false() 0.08/0.18 gr(0(),0()) -> false() 0.08/0.18 gr(0(),x) -> false() 0.08/0.18 gr(s(x),0()) -> true() 0.08/0.18 gr(s(x),s(y)) -> gr(x,y) 0.08/0.18 p(0()) -> 0() 0.08/0.18 p(s(x)) -> x 0.08/0.18 0.08/0.18 Proof: 0.08/0.18 Open 0.08/0.19 EOF