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Size: a a a
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Remark safe_seq:
forall (Q R: assertion) c' r,
(forall s, Q s -> upaco2 (safe_gen R) r c' s) ->
forall c s, safe Q c s -> paco2 (safe_gen R) r (c ;; c') s.
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Remark safe_seq:
forall (Q R: assertion) (c': com),
(forall s, Q s -> safe R c' s) ->
forall c s, safe Q c s -> safe R (c ;; c') s.
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