At: P tag by msg lemma E:TaggedEventStruct, tr:|E| List.
(m:Label. Causal(E)( < tr > _m)) No-dup-send(E)(tr) Tag-by-msg(E)(tr) By: Auto
THEN
Unfold `P_tag_by_msg` 0
THEN
Reduce 0
THEN
AllHyps (h.(InstHyp [tag(E)(tr[i])] h) THEN (InstHyp [tag(E)(tr[j])] h) THEN (Thin h)) Generated subgoal: