Proof using.
red. unfold state_machine_log in *. simpl in *. intros. subst.
find_higher_order_rewrite.
destruct_update; simpl in *; eauto.
Qed.

(* Specifications: *)
Lemma state_machine_state_same_packet_subset :
raft_net_invariant_state_same_packet_subset state_machine_log.