Proof using.
red. unfold votedFor_term_sanity in *. simpl in *.
intros. subst. repeat find_higher_order_rewrite.
destruct_update; simpl in *; eauto.
- find_copy_eapply_lem_hyp handleRequestVoteReply_term_votedFor; eauto.
intuition; repeat find_rewrite; eauto.
- eauto using handleRequestVoteReply_currentTerm.
Qed.

(* Specifications: *)
Lemma votedFor_term_sanity_request_vote :
refined_raft_net_invariant_request_vote votedFor_term_sanity.