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

Lemma LockRes_age_content1 ge (js : jstate ge) n a :
lockRes (age_tp_to n js) a = option_map (option_map (age_to n)) (lockRes js a).