proposition: Theorem G2_2_3_equiv : Pr[G2_2] == Pr[x <-$ G2_3; ret fst x].
proof: Proof. unfold G2_2, G2_3. inline_first. comp_skip. inline_first. comp_skip. comp_simp. simpl. intuition. Qed.
imports: FCF PRF SplitVector cAU CompFold DetSem SemEquiv