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Proof step 16 from proof inv-io-read (previous step)

# buf = # buf2, # buf2 = n1 + n0 + n, # buf2 = n2 + n0 + n, pebs[m3] = mkpeb(buf1, m2, false), m3 < # pebs, mtd-cons(pebs), range=(buf, n0 + n, buf2, n0 + n, n2), range=(buf, 0, buf2, 0, n0), m4 ≤ UBI_READ_RETRIES, m4 ≤ UBI_READ_RETRIES + 1, n0 + n ≤ # buf2, m0 + n ≤ PEB_SIZE, ⌊err⌋ ⊦ ⟪mtd_asm_read#(m3, m0, n0, n, pebs; buf; bitflips, err); if err ≠ ESUCCESS then debug#("ubi-io: failed to read from PEB " + m3.toString); m := m4 + 1⟫ ( n0 + n ≤ # buf ∧ m ≤ UBI_READ_RETRIES + 1 ∧ # buf = # buf2 ∧ range=(buf, 0, buf2, 0, n0) ∧ range=(buf, n0 + n, buf2, n0 + n, n2) ∧ (err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err = ESUCCESS → subarray(buf, n0, n) = subarray(pebs[m3].data, m0, n)) ∧ UBI_READ_RETRIES < (UBI_READ_RETRIES - m4) + m)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 17:
# buf = # buf2, # buf2 = n2 + n0 + n, pebs[m3] = mkpeb(buf1, m2, false), m3 < # pebs, mtd-cons(pebs), range=(buf, n0 + n, buf2, n0 + n, n2), range=(buf, 0, buf2, 0, n0), m4 ≤ UBI_READ_RETRIES, m4 ≤ UBI_READ_RETRIES + 1, n0 + n ≤ # buf2, m0 + n ≤ PEB_SIZE, ⌊err⌋ ⊦ ⟪mtd_asm_read#(m3, m0, n0, n, pebs; buf; bitflips, err); if err ≠ ESUCCESS then debug#("ubi-io: failed to read from PEB " + m3.toString); m := m4 + 1⟫ ( n0 + n ≤ # buf ∧ m ≤ UBI_READ_RETRIES + 1 ∧ # buf = # buf2 ∧ range=(buf, 0, buf2, 0, n0) ∧ range=(buf, n0 + n, buf2, n0 + n, n2) ∧ (err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err = ESUCCESS → subarray(buf, n0, n) = subarray(pebs[m3].data, m0, n)) ∧ UBI_READ_RETRIES < (UBI_READ_RETRIES - m4) + m)

Rule argument

Additional information

Used simplifier rules: eqs: ⊦ m = n + n0 ∧ m = n + n1 → n0 = n1; (forward) from specification nat-basic%c: ⊦ m + n = n + m; from specification nat-basic%a: ⊦ (m + n0) + n1 = m + n0 + n1; from specification nat-basic