Lemma handleRequestVote_currentTerm_votedFor : forall pDst t cid lli llt d d' m, handleRequestVote pDst d t cid lli llt = (d', m) -> (currentTerm d < currentTerm d' \/ (currentTerm d = currentTerm d' /\ votedFor d = None) \/ (currentTerm d = currentTerm d' /\ votedFor d = votedFor d')).