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Proof step 17 from proof inv-read (previous step)

# apebs = # wlar, wlar[m] = wl-entry(m0, used), vols[v][vtblpnum4] = ⌜m⌝ , buf0 = buf, vtblpnum = vtblpnum3, vtblpnum0 = m, vtblpnum4 < # vols[v], m < # wlar, bflipset-cons(bflipset, wlar), ubi-io-inv(apebs), ubi-io-read-data-pre(vtblpnum0, vtblpnum, n0, n, buf0, apebs), unique-sqns(apebs), valid-ebatbl(apebs, wlar, vols, vtblpnum5), valid-eraseq(apebs, q), valid-eraseq(wlar, q), valid-eraseq(q), valid-global-sqn(apebs, sqnum), valid-peb(v, vtblpnum4, apebs[m]), valid-vtbl(apebs, vols, wlar, vtblpnum5), valid-wl(apebs, wlar), v ∈ vols, n0 + n ≤ # buf, vtblpnum3 + n ≤ LEB_SIZE ⊦ ⟪fail_or_success#(; ; err); bitflips := ?; if err = ESUCCESS then buf0 := copy(apebs[vtblpnum0].data, vtblpnum, buf0, n0, n) else choose buf with # buf = # buf0 ∧ range=(buf, 0, buf0, 0, n0) ∧ range=(buf, n0 + n, buf0, n0 + n, # buf0 - n0 + n) in buf0 := buf; if err = ESUCCESS ∧ bitflips then bflipset := bflipset ++ m⟫ bflipset-cons(bflipset, wlar), m = vtblpnum5, m ∈ q, vtblpnum5 ∈ q, VTBL_VOLID ∈ vols

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 18:
# apebs = # wlar, vols[v][vtblpnum4] = ⌜m⌝ , wlar[m] = wl-entry(m0, used), m ≠ vtblpnum5, vtblpnum4 < # vols[v], m < # wlar, bflipset-cons(bflipset, wlar), ubi-io-inv(apebs), unique-sqns(apebs), valid-ebatbl(apebs, wlar, vols, vtblpnum5), valid-eraseq(q), valid-eraseq(wlar, q), valid-eraseq(apebs, q), valid-global-sqn(apebs, sqnum), valid-peb(v, vtblpnum4, apebs[m]), valid-vtbl(apebs, vols, wlar, vtblpnum5), valid-wl(apebs, wlar), v ∈ vols, vtblpnum3 + n ≤ LEB_SIZE, n0 + n ≤ # buf, ¬ apebs[m].bad, ¬ VTBL_VOLID ∈ vols, ¬ vtblpnum5 ∈ q, ¬ m ∈ q ⊦ ⟪fail_or_success#(; ; err); bitflips := ?; if err = ESUCCESS then buf := copy(apebs[m].data, vtblpnum3, buf, n0, n) else choose buf1 with # buf1 = # buf ∧ range=(buf1, 0, buf, 0, n0) ∧ range=(buf1, n0 + n, buf, n0 + n, # buf - n0 + n) in buf := buf1; if err = ESUCCESS ∧ bitflips then bflipset := bflipset ++ m⟫ bflipset-cons(bflipset, wlar)

Rule argument

Additional information

Used simplifier rules: ⊦ ubi-io-read-data-pre(n, n0, m0, n1, buf, apebs) ↔ n < # apebs ∧ ¬ apebs[n].bad ∧ n0 + n1 ≤ LEB_SIZE ∧ m0 + n1 ≤ # buf; (s)