{- LIQUID "--higherorder"                         @-}
{- LIQUID "--automatic-instances=liquidinstances" @-}
{-@ LIQUID "--ple" @-}

module PLE where 

{-@ reflect adder @-}
adder :: Int -> Int -> Int 
adder x y = x + y 


{-@ prop :: { adder 5 6 == 12 } @-}
prop = ()