Proof using.
red. unfold client_cache_correct in *. simpl in *. intros. subst.
find_higher_order_rewrite.
destruct_update; simpl in *; eauto.
use_same_client_cache handleRequestVote_clientCache.
erewrite handleRequestVote_same_log; eauto.
erewrite handleRequestVote_same_lastApplied; eauto.
Qed.

(* Specifications: *)
Lemma client_cache_correct_request_vote_reply :
raft_net_invariant_request_vote_reply' client_cache_correct.