Ltac do_le_antisym :=
    match goal with
    | [ H : ?x <= ?y, H' : ?y <= ?x |- _ ] =>
      assert (x = y) by auto using Nat.le_antisymm
    end.

Lemma votes_correct_state_same_packet_subset : refined_raft_net_invariant_state_same_packet_subset votes_correct.