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Proof step 30 from proof inv-change (previous step)

# apebs0 = # wlar0, # apebs = # wlar, # apebs1 = # wlar0, # wlar1 = # wlar0, q.head = eq-entry(m, lref), LEB_SIZE = n2 + n0, wlar0[vtblpnum] = wl-entry(m0, free), apebs1[vtblpnum] = mkpeb(aehdr, empty, mkempbuf(LEB_SIZE), 0, false), vtblpnum4 ≠ vtblpnum, aehdr.valid?, vtblpnum < # wlar0, vtblpnum3 < # vols[v], bflipset-cons(bflipset0, wlar1), bflipset-cons(bflipset, wlar), bflipset-cons(bflipset, wlar0), id(apebs0, apebs, mapped-pebs(vols)), id(apebs0, apebs1, mapped-pebs(vols)), id(apebs1, apebs, mapped-pebs(vols)), id○(apebs0, apebs1, vtblpnum), is-aligned(n0, EB_PAGE_SIZE), ubi-io-inv(apebs0), ubi-io-inv(apebs1), ubi-io-inv(apebs), unique-sqns(apebs0), unique-sqns(apebs), unique-sqns(apebs1), valid-ebatbl(apebs, wlar, vols, vtblpnum4), valid-ebatbl(apebs1, wlar0, vols, vtblpnum4), valid-ebatbl(apebs0, wlar1, vols1, vtblpnum0), valid-eraseq(q0), valid-eraseq(wlar1, q0), valid-eraseq(apebs0, q0), valid-eraseq(q), valid-eraseq(wlar, q), valid-eraseq(apebs, q), valid-eraseq(q1), valid-eraseq(wlar0, q1), valid-eraseq(apebs1, q1), valid-global-sqn(apebs0, sqnum0), valid-global-sqn(apebs, sqnum), valid-global-sqn(apebs1, sqnum), valid-vtbl(apebs, vols, wlar, vtblpnum4), valid-vtbl(apebs1, vols, wlar0, vtblpnum4), valid-vtbl(apebs0, vols1, wlar1, vtblpnum0), valid-wl(apebs0, wlar1), valid-wl(apebs, wlar), valid-wl(apebs1, wlar0), v ∈ vols, n0 ≤ LEB_SIZE, n0 ≤ # buf, q1.lebrefs ⊆ q.lebrefs, ¬ vtblpnum4 ∈ q1, ¬ VTBL_VOLID ∈ vols, ¬ vtblpnum4 ∈ q, ¬ VTBL_VOLID ∈ vols1, ¬ vtblpnum0 ∈ q0, err = ESUCCESS → apebs0[vtblpnum].fill = align↑(datasize(buf, n0), EB_PAGE_SIZE) ∧ apebs0[vtblpnum].data = subarray(buf, 0, n0) + mkempbuf(n2) ∧ q0.lebrefs ⊆ q1.lebrefs ++ (v × vtblpnum3), err ≠ ESUCCESS → q0.lebrefs = q1.lebrefs, err = ESUCCESS ∧ vols[v][vtblpnum3] ≠ unmapped → q0 = q1 + eq-entry(vols[v][vtblpnum3].pnum, v × vtblpnum3) ', err ≠ ESUCCESS → vols1 = vols, err = ESUCCESS → vols1 = vols[v, vols[v][vtblpnum3, ⌜vtblpnum⌝ ]], apebs = apebs1 ∧ wlar = wlar0 ∧ q = q1 ∨ id○(apebs, apebs1, vtblpnum) ∧ id○(wlar, wlar0, vtblpnum) ∧ q = eq-entry(vtblpnum, lref) ' + q1, err = ESUCCESS ∨ ⌊err⌋ ⊦ ⟪if err ≠ ESUCCESS then debug#("ubi: change to PEB " + vtblpnum.toString + " failed")⟫ ( (err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err ≠ ESUCCESS → vols1 = vols ∧ q0.lebrefs ⊆ q.lebrefs) ∧ ( err = ESUCCESS → q0.lebrefs ⊆ q.lebrefs ++ (v × vtblpnum3) ∧ (∃ n. vols1 = vols[v, vols[v][vtblpnum3, ⌜n⌝ ]] ∧ apebs0[n].data = subarray(buf, 0, n0) + mkempbuf(n2) ∧ apebs0[n].fill = align↑(datasize(buf, n0), EB_PAGE_SIZE))))

Heuristic conditional right split applied rule if right

And obtained the following new goals

Rule argument

pos: right 1

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