(VAR x y )
(STRATEGY INNERMOST)
(RULES 
        cond1(true,x,y) -> cond2(gr(x,0),x,y)
        cond2(true,x,y) -> cond1(gr(add(x,y),0),p(x),y)
        cond2(false,x,y) -> cond3(gr(y,0),x,y)
        cond3(true,x,y) -> cond1(gr(add(x,y),0),x,p(y))
        cond3(false,x,y) -> cond1(gr(add(x,y),0),x,y)
        gr(0,x) -> false
        gr(s(x),0) -> true
        gr(s(x),s(y)) -> gr(x,y)
        add(0,x) -> x
        add(s(x),y) -> s(add(x,y))
        p(0) -> 0
        p(s(x)) -> x
        
)