(*Require Import VST.concurrency.cl_step_lemmas.*)
Set Bullet Behavior "Strict Subproofs".
(** Lemmas common to both parts of the progress/preservation simulation results *)

Lemma matchfunspecs_age_to e Gamma n Phi :
(n <= level Phi)%nat ->
matchfunspecs e Gamma Phi ->
matchfunspecs e Gamma (age_to n Phi).