unfold G1_2, G1.
unfold PRF_h_A.
simpl.
inline_first.
comp_skip.
inline_first.
eapply comp_spec_eq_impl_eq.
comp_skip.
eapply (@oc_comp_spec_eq _ _ _ _ _ _ _ _ _ _ _ _ _ _ (fun a b => snd a = b)).
trivial.
intuition.
subst.
inline_first.
simpl.
eapply comp_spec_eq_trans_r.
2: eapply comp_spec_right_ident.
comp_skip.
apply (oneVector c).
apply (oneVector c).
inline_first.
simpl.
eapply comp_spec_ret; intuition.
simpl in *.
intuition; subst.
inline_first.
comp_simp.
simpl.
eapply comp_spec_eq_refl.
Qed.

Theorem G0_G1_equiv :
| Pr[G0] - Pr[G1] | <= PRF_Advantage ({0, 1}^c) ({0, 1}^c) h _ _ PRF_h_A.