(*Require Import VST.concurrency.cl_step_lemmas.*)
Set Bullet Behavior "Strict Subproofs".
(** Lemmas common to both parts of the progress/preservation simulation results *)
Definition pures_same phi1 phi2 := forall loc k pp, phi1 @ loc = PURE k pp <-> phi2 @ loc = PURE k pp.
Definition isVAL (r : resource) :=
match r with
| YES _ _ (VAL _) _ => Logic.True
| _ => False
end.

Lemma juicyRestrict_ext  m phi phi' pr pr' :
(forall loc, perm_of_res (phi @ loc) = perm_of_res (phi' @ loc)) ->
@juicyRestrict phi m (acc_coh pr) = @juicyRestrict phi' m (acc_coh pr').