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Proof step 48 from proof inv-io-read (previous step)

# buf = # buf2, # buf2 = n2 + n0 + n, # buf1 = # buf2, # buf2 = n3 + n0 + n, UBI_READ_RETRIES = n1 + m4, pebs[m3] = mkpeb(buf0, m2, false), m3 < # pebs, mtd-cons(pebs), range=(buf, n0 + n, buf2, n0 + n, n2), range=(buf, 0, buf2, 0, n0), range=(buf1, n0 + n, buf, n0 + n, n3), range=(buf1, 0, buf, 0, n0), m4 ≤ UBI_READ_RETRIES, m4 ≤ UBI_READ_RETRIES + 1, n0 + n ≤ # buf2, m1 + n ≤ PEB_SIZE, ⌊err1⌋ , ⌊err0⌋ ⊦ ⟪debug#("ubi-io: failed to read from PEB " + m3.toString); m := m4 + 1⟫ (m ≤ UBI_READ_RETRIES + 1 ∧ range=(buf1, n0 + n, buf2, n0 + n, n2) ∧ UBI_READ_RETRIES < n1 + m)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 49:
# buf = # buf2, # buf1 = # buf2, # buf2 = n3 + n0 + n, UBI_READ_RETRIES = n1 + m4, pebs[m3] = mkpeb(buf0, m2, false), m3 < # pebs, mtd-cons(pebs), range=(buf, n0 + n, buf2, n0 + n, n3), range=(buf, 0, buf2, 0, n0), range=(buf1, n0 + n, buf, n0 + n, n3), range=(buf1, 0, buf, 0, n0), m4 ≤ UBI_READ_RETRIES, m4 ≤ UBI_READ_RETRIES + 1, n0 + n ≤ # buf2, m1 + n ≤ PEB_SIZE, ⌊err1⌋ , ⌊err0⌋ ⊦ ⟪debug#("ubi-io: failed to read from PEB " + m3.toString); m := m4 + 1⟫ (m ≤ UBI_READ_RETRIES + 1 ∧ UBI_READ_RETRIES < n1 + m)

Rule argument

Additional information

Used simplifier rules: ⊦ range=(buf, n0, buf0, n1, m) ∧ range=(buf0, n1, buf1, n2, m) → range=(buf, n0, buf1, n2, m); (ss)%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