(comment "CPSA 2.0.4")
(comment "All input read")

(defprotocol missing-contraction basic
  (defrole sender
    (vars (m n text) (a b name))
    (trace (send (enc a m (pubk a))) (send (enc a n (pubk b)))))
  (defrole receiver
    (vars (m text) (a b name))
    (trace (recv (enc a m (pubk b))))))

(defskeleton missing-contraction
  (vars (m n text) (a b b-0 name))
  (defstrand sender 2 (m m) (n n) (a a) (b b))
  (defstrand receiver 1 (m m) (a a) (b b-0))
  (precedes ((0 1) (1 0)))
  (non-orig (privk a))
  (uniq-orig m)
  (traces ((send (enc a m (pubk a))) (send (enc a n (pubk b))))
    ((recv (enc a m (pubk b-0)))))
  (label 0)
  (unrealized (1 0))
  (comment "1 in cohort - 1 not yet seen"))

(defskeleton missing-contraction
  (vars (m n text) (a b name))
  (defstrand sender 2 (m m) (n n) (a a) (b b))
  (defstrand receiver 1 (m m) (a a) (b a))
  (precedes ((0 1) (1 0)))
  (non-orig (privk a))
  (uniq-orig m)
  (operation nonce-test (contracted (b-0 a)) m (1 0) (enc a m (pubk a)))
  (traces ((send (enc a m (pubk a))) (send (enc a n (pubk b))))
    ((recv (enc a m (pubk a)))))
  (label 1)
  (parent 0)
  (unrealized)
  (shape))

(comment "Nothing left to do")