Ltac start_proof :=
    cbn [nwState]; intros; subst; repeat find_higher_order_rewrite;
    update_destruct; rewrite_update; cbn [fst snd] in *; eauto.

Lemma votes_le_current_term_append_entries_reply : refined_raft_net_invariant_append_entries_reply votes_le_currentTerm.