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Proof step 9 from proof crash-neutral-markbad (previous step)

apebs[n] = mkpeb(aehdr, avhdr, buf, m, false), n < # apebs, ubi-io-inv(apebs) ⊦ ⟨choose err0 with ⌊err0⌋ ∨ err0 = ESUCCESS in err := err0; apebs0 := apebs; if err = ESUCCESS then apebs[n].bad := true⟩ (apebs0 = apebs)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Proof step 10:
apebs[n] = mkpeb(aehdr, avhdr, buf, m, false), n < # apebs, ubi-io-inv(apebs) ⊦ ∃ err0. (⌊err0⌋ ∨ err0 = ESUCCESS) ∧ ⟨err := err0; apebs0 := apebs; if err = ESUCCESS then apebs[n].bad := true⟩ (apebs0 = apebs)

Proof step 9 from proof crash-neutral-markbad (previous step)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Rule argument

Additional information