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Proof step 7 from proof refine-read-data (previous step)

apebs[m3] = mkpeb(aehdr, avhdr, buf1, m2, false), buf = buf0, m = EB_PAGE_SIZE, m1 = m3, n = n1, n0 = n2, m1 < # pebs, m3 < # apebs, abs(pebs, apebs), mtd-cons(pebs), ubi-io-inv(apebs), m0 + n ≤ LEB_SIZE, n0 + n ≤ # buf, n2 + n1 ≤ # buf0, m0 + n1 ≤ LEB_SIZE, m1 < # pebs → m1 < # pebs ⊦ ⟪ubi_io_read#(m1, m0 + 2 * m, n0, n, pebs; buf; bitflips, err)⟫ ⟨aubi_io_read_data#(m3, m0, n2, n1, apebs; buf0; isbad, err0)⟩ (buf = buf0 ∧ (bitflips ↔ isbad) ∧ err = err0), pebs[m1].bad

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 8:
apebs[m3] = mkpeb(aehdr, avhdr, buf1, m2, false), buf = buf0, m3 < # pebs, m3 < # apebs, abs(pebs, apebs), mtd-cons(pebs), ubi-io-inv(apebs), n2 + n1 ≤ # buf0, m0 + n1 ≤ LEB_SIZE, ¬ pebs[m3].bad ⊦ ⟪ubi_io_read#(m3, m0 + 2 * EB_PAGE_SIZE, n2, n1, pebs; buf; bitflips, err)⟫ ⟨aubi_io_read_data#(m3, m0, n2, n1, apebs; buf0; isbad, err0)⟩ (buf = buf0 ∧ (bitflips ↔ isbad) ∧ err = err0)

Rule argument

Additional information

Used simplifier rules: ⊦ m < n → n ≠ 0; (s)%f: ⊦ m < n → n ≠ 0; (forward) from specification nat-basic