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Proof step 15 from proof crash-neutral-read-data (previous step)

apebs[n6] = mkpeb(aehdr, avhdr, buf1, m, false), n6 < # apebs, ubi-io-inv(apebs), n5 + n3 ≤ LEB_SIZE, n4 + n3 ≤ # buf ⊦ ⟨choose buf1 with # buf1 = # buf ∧ range=(buf1, 0, buf, 0, n4) ∧ range=(buf1, n4 + n3, buf, n4 + n3, # buf - n4 + n3) in buf := buf1⟩ true

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Proof step 16:
apebs[n6] = mkpeb(aehdr, avhdr, buf0, m, false), n6 < # apebs, ubi-io-inv(apebs), n4 + n3 ≤ # buf, n5 + n3 ≤ LEB_SIZE ⊦ ∃ buf1. (# buf1 = # buf → range=(buf1, 0, buf, 0, n4) → # buf ≥ n4 + n3) ∧ (# buf1 = # buf ∧ range=(buf1, 0, buf, 0, n4) ∧ range=(buf1, n4 + n3, buf, n4 + n3, # buf - n4 + n3)) ∧ ⟨buf := buf1⟩ true

Proof step 15 from proof crash-neutral-read-data (previous step)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Rule argument

Additional information