4 function f (x : int) : int = x + 1
6 goal G1_true : forall x : int. f x - 1 = x
8 goal G2_false : forall x : int. f x = x
10 axiom A_false : forall x : int. f x = x
12 goal G1W : forall x : int. f x - 1 = x
14 goal G2W : forall x : int. f x = x
16 goal G3W : forall x : int. f x = 2*x