(P2PSEND
 (1 1 (:TYPE-PRESCRIPTION P2PSEND))
 )
(P2PRECV
 (1 1 (:TYPE-PRESCRIPTION P2PRECV))
 )
(P2P-CORRECTNESS
 (6 3 (:TYPE-PRESCRIPTION P2PRECV))
 (3 3 (:TYPE-PRESCRIPTION P2PSEND))
 )
(P2PSEND-NIL)
(P2PSEND-NOT-NIL)
(P2PRECV-NIL)
(P2PRECV-NOT-NIL)
