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Proof step 15 from proof crash-neutral-write-echdr (previous step)

apebs[n] = mkpeb(empty, avhdr, buf, m, false), apebs0 = apebs, aehdr.valid?, n < # apebs, ubi-io-inv(apebs) ⊦ ⟨choose aehdr with ¬ aehdr.valid? in apebs[n].echdr := aehdr⟩ (apebs0 = apebs)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Proof step 16:
apebs[n] = mkpeb(empty, avhdr, buf, m, false), apebs0 = apebs, aehdr0.valid?, n < # apebs, ubi-io-inv(apebs) ⊦ ∃ aehdr. ¬ aehdr.valid? ∧ ⟨apebs[n].echdr := aehdr⟩ (apebs0 = apebs)

Proof step 15 from proof crash-neutral-write-echdr (previous step)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Rule argument

Additional information