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Proof step 2 from proof inv-exec-lem (conclusion)

⊦ inv(sys) → (¬ inv(exec(sys, co) .1) ↔ false)

User applied rule insert lemma

And obtained the following new goals

Proof step 1:
⊦ inv(sys) → inv(exec(sys, co) .1)

Rule argument

[LEMMAARG : inv-exec, [sys, co] → [sys, co]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (sys, co)]]