Definition msg_lifted_leader_sublog_host (net : ghost_log_network) : Prop :=
    forall leader e h,
      type (snd (nwState net leader)) = Leader ->
      In e (log (snd (nwState net h))) ->
      eTerm e = currentTerm (snd (nwState net leader)) ->
      In e (log (snd (nwState net leader))).

Lemma doLeader_message_lci : forall st h os st' ms m t n pli plt es ci, doLeader st h = (os, st', ms) -> In m ms -> snd m = AppendEntries t n pli plt es ci -> ci = commitIndex st'.