#lang ivy1.7

isolate ob1 = {
    specification {
        theorem impi = {
            function p : bool
            function q : bool
            {
                property p
                property q
            }
            property p -> q
        }
    }
}

theorem refl = {
    type t
    property X:t = X
}

relation a

type t1
var b : t1

object bar = {
    theorem silly = {
        property a -> (b = b)
    }
    proof apply ob1.impi; apply refl
}