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Proof step 57 from proof refine-read-data (previous step)

# buf3 = # buf0, # buf0 = n3 + n2 + n1, apebs[m3] = mkpeb(aehdr, avhdr, buf1, m2, false), pebs[m3] = mkpeb(buf2, m4, false), err = err1, m3 < # pebs, m3 < # apebs, abs(pebs, apebs), abs-peb(mkpeb(buf2, m4, false), mkpeb(aehdr, avhdr, buf1, m2, false)), mtd-cons(pebs), range=(buf3, 0, buf0, 0, n2), range=(buf3, n2 + n1, buf0, n2 + n1, n3), ubi-io-inv(apebs), n2 + n1 ≤ # buf0, (m1 + 2 * EB_PAGE_SIZE) + n1 ≤ PEB_SIZE, m1 + n1 ≤ LEB_SIZE, err1 = ESUCCESS → subarray(buf3, n2, n1) = subarray(buf2, m1 + 2 * EB_PAGE_SIZE, n1), err1 = ESUCCESS ∨ ⌊err1⌋ ⊦ ∃ buf. (# buf = # buf0 → range=(buf, 0, buf0, 0, n2) → # buf0 ≥ n2 + n1) ∧ (# buf = # buf0 ∧ range=(buf, 0, buf0, 0, n2) ∧ range=(buf, n2 + n1, buf0, n2 + n1, # buf0 - n2 + n1)) ∧ ⟨buf0 := buf⟩ (buf3 = buf0 ∧ (bitflips0 ↔ bitflips0) ∧ err1 = err), err = ESUCCESS

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 58:
# buf0 = n3 + n2 + n1, # buf3 = # buf0, pebs[m3] = mkpeb(buf2, m4, false), apebs[m3] = mkpeb(aehdr, avhdr, buf1, m2, false), m3 < # apebs, m3 < # pebs, abs(pebs, apebs), abs-peb(mkpeb(buf2, m4, false), mkpeb(aehdr, avhdr, buf1, m2, false)), mtd-cons(pebs), range=(buf3, n2 + n1, buf0, n2 + n1, n3), range=(buf3, 0, buf0, 0, n2), ubi-io-inv(apebs), m1 + n1 ≤ LEB_SIZE, (m1 + 2 * EB_PAGE_SIZE) + n1 ≤ PEB_SIZE, n2 + n1 ≤ # buf0, ⌊err1⌋ ⊦ ∃ buf. # buf = # buf0 ∧ range=(buf, 0, buf0, 0, n2) ∧ range=(buf, n2 + n1, buf0, n2 + n1, # buf0 - n2 + n1) ∧ ⟨buf0 := buf⟩ (buf3 = buf0)

Rule argument

Additional information

Used simplifier rules: ⊦ n ≥ m ↔ m ≤ n; (s)% ⊦ ⌊err⌋ → err ≠ ESUCCESS; (s)