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Proof step 99 from proof refine-read-vidhdr (previous step)

# buf2 = EB_PAGE_SIZE, apebs[m2] = mkpeb(aehdr, avhdr1, buf0, m1, false), pebs[m2] = mkpeb(buf1, m0, false), m2 < # pebs, m2 < # apebs, abs(pebs, apebs), abs-peb(mkpeb(buf1, m0, false), mkpeb(aehdr, avhdr1, buf0, m1, false)), mtd-cons(pebs), ubi-io-inv(apebs), 2 * EB_PAGE_SIZE ≤ PEB_SIZE, ⌊err1⌋ ⊦ ∃ err0. (⌊err0⌋ ∨ err0 = ESUCCESS) ∧ ⟨err := err0; bitflips := ?; if err = ESUCCESS then avhdr := apebs[m2].vidhdr else avhdr := ?⟩ (avhdr0 = avhdr ∧ (bitflips0 ↔ bitflips) ∧ err1 = err)

User applied rule exists right

And obtained the following new goals

Proof step 100:
# buf2 = EB_PAGE_SIZE, pebs[m2] = mkpeb(buf1, m0, false), apebs[m2] = mkpeb(aehdr, avhdr1, buf0, m1, false), m2 < # apebs, m2 < # pebs, abs(pebs, apebs), abs-peb(mkpeb(buf1, m0, false), mkpeb(aehdr, avhdr1, buf0, m1, false)), mtd-cons(pebs), ubi-io-inv(apebs), 2 * EB_PAGE_SIZE ≤ PEB_SIZE, ⌊err1⌋ ⊦ (⌊err1⌋ ∨ err1 = ESUCCESS) ∧ ⟨err := err1; bitflips := ?; if err = ESUCCESS then avhdr := apebs[m2].vidhdr else avhdr := ?⟩ (avhdr0 = avhdr ∧ (bitflips0 ↔ bitflips) ∧ err1 = err)

Rule argument

pos: right 1 terms: err1 abort: F discard: T computed: T

Additional information

Used terms: err1