(* This file was originally generated by why.
   It can be modified; only the generated parts will be overwritten. *)

Require Why.

(*Why*) Parameter f :
  (_: unit)(x: Z)(sig_2 Z unit [x0: Z][result: unit](`x0 = 1 - x`)).

(* Why obligation from file "good/wpcalls.mlw", characters 146-150 *)
Lemma p_po_1 : 
  (x: Z)
  (t: unit)
  (Post1: t = tt)
  ((x0:Z) (`x0 = 1 - x` -> ((x1:Z) (`x1 = 1 - x0` -> `x1 = x`)))).
Proof.
Intuition.
Save.


