Continuation change, extract_proph_winner change

The continuation Q is moved to the top level in the Accepted state.

extract_proph_winner now only considers the first element in the list and does not restrict the first value.

theories/logatom/rdcss/rdcss.v

@@ -161,9 +161,10 @@ Section rdcss.
 
   (** Definition of the invariant *)
 
+  (** Extract the TID of the winner from the prophecy value. The winner is the first thread that performs a CAS. *)
   Fixpoint proph_extract_winner (pvs : list (val * val)) : option proph_id :=
     match pvs with
-    | ((_, _)%V, LitV (LitProphecy tid)) :: _  => Some tid
+    | (_, LitV (LitProphecy tid)) :: _  => Some tid
     | _                               => None
     end.