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Proof step 7 from proof crash-neutral-read-vidhdr (previous step)

apebs[n] = mkpeb(aehdr, avhdr0, buf, m, false), n < # apebs, ubi-io-inv(apebs), ubi-io-read-vidhdr-pre(n, apebs) ⊦ ⟨fail_or_success#(; ; err); bitflips := ?; if err = ESUCCESS then avhdr := apebs[n].vidhdr else avhdr := ?⟩ true

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 8:
apebs[n] = mkpeb(aehdr, avhdr0, buf, m, false), n < # apebs, ubi-io-inv(apebs) ⊦ ⟨fail_or_success#(; ; err); bitflips := ?; if err = ESUCCESS then avhdr := apebs[n].vidhdr else avhdr := ?⟩ true

Rule argument

Additional information

Used simplifier rules: ⊦ mkpeb(aehdr, avhdr, buf, m, boolvar).bad ↔ boolvar; (s)% ⊦ ubi-io-read-vidhdr-pre(n, apebs) ↔ n < # apebs ∧ ¬ apebs[n].bad; (s)