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Proof step 21 from proof inv-create-volume (previous step)

# apebs1 = # wlar0, # apebs = # wlar, apebs2 = apebs1, q1 = [], wlar1 = wlar0, v ≠ VTBL_VOLID, bflipset-cons(bflipset, wlar0), bflipset-cons(bflipset, wlar), id(apebs1, apebs, mapped-pebs(vols)), ubi-io-inv(apebs), ubi-io-inv(apebs1), unique-sqns(apebs1), unique-sqns(apebs), valid-ebatbl(apebs1, wlar0, vols, vtblpnum3), valid-ebatbl(apebs, wlar, vols, vtblpnum3), valid-eraseq(wlar0, []), valid-eraseq(apebs, q), valid-eraseq(wlar, q), valid-eraseq(q), valid-global-sqn(apebs1, sqnum), valid-global-sqn(apebs, sqnum), valid-vtbl(apebs1, vols, wlar0, vtblpnum3), valid-vtbl(apebs, vols, wlar, vtblpnum3), valid-wl(apebs1, wlar0), valid-wl(apebs, wlar), 2 * ENCODED_NAT_SIZE + (ENCODED_VOLID_SIZE + ENCODED_NAT_SIZE) * # vols + ENCODED_VOLID_SIZE ≤ LEB_SIZE, ¬ v ∈ vols, ¬ VTBL_VOLID ∈ vols, ¬ vtblpnum3 ∈ q ⊦ [ubi_wl_get_peb#(; vtblpnum, wlar0, q1, apebs1; err)] ( (err = ESUCCESS ∨ ⌊err⌋ ) ∧ ( err ≠ ESUCCESS → # apebs1 = # wlar0 ∧ unique-sqns(apebs1) ∧ valid-global-sqn(apebs1, sqnum) ∧ valid-wl(apebs1, wlar0) ∧ valid-eraseq(q1) ∧ valid-eraseq(wlar0, q1) ∧ valid-eraseq(apebs1, q1) ∧ bflipset-cons(bflipset, wlar0) ∧ valid-ebatbl(apebs1, wlar0, vols, vtblpnum3) ∧ valid-vtbl(apebs1, vols, wlar0, vtblpnum3)) ∧ ubi-io-inv(apebs1) ∧ q1.lebrefs = ∅ ∧ id(apebs1, apebs2, mapped-pebs(vols)) ∧ ( err = ESUCCESS → vtblpnum < # apebs1 ∧ wlar0[vtblpnum].status = free ∧ apebs2 = apebs1 ∧ wlar1 = wlar0 ∧ [] = q1 ∧ # apebs1 = # wlar0 ∧ unique-sqns(apebs1) ∧ valid-global-sqn(apebs1, sqnum) ∧ valid-wl(apebs1, wlar0) ∧ valid-eraseq(wlar0, []) ∧ bflipset-cons(bflipset, wlar0) ∧ valid-ebatbl(apebs1, wlar0, vols, vtblpnum3) ∧ valid-vtbl(apebs1, vols, wlar0, vtblpnum3)) → ⟪vols0 := vols; if err = ESUCCESS then let vtbl = to-vtbl(vols) in {vtbl[v] := n; let buf = mkbuf(LEB_SIZE), vtbl = to-vtbl(vols) in {vtbl[v] := n; encode_vtbl#(; vtbl, buf; err); if err = ESUCCESS then {ubi_atomic_leb_change# (VTBL_VOLID, VTBL_LNUM, vtblpnum, LEB_SIZE, buf, EB_PAGE_SIZE; vols, wlar0, q1, bflipset, vtblpnum3, sqnum, apebs1; err); if err = ESUCCESS then {vols[v] := mkebatbl(n); vols[v] := fill(vols[v], unmapped)}}}}⟫ ( # apebs1 = # wlar0 ∧ unique-sqns(apebs1) ∧ valid-global-sqn(apebs1, sqnum) ∧ valid-wl(apebs1, wlar0) ∧ valid-eraseq(q1) ∧ valid-eraseq(wlar0, q1) ∧ valid-eraseq(apebs1, q1) ∧ ¬ VTBL_VOLID ∈ vols ∧ bflipset-cons(bflipset, wlar0) ∧ valid-ebatbl(apebs1, wlar0, vols, vtblpnum3) ∧ valid-vtbl(apebs1, vols, wlar0, vtblpnum3) ∧ ubi-io-inv(apebs1) ∧ (err = ESUCCESS ∨ ⌊err⌋ ) ∧ id(apebs1, apebs, mapped-pebs(vols)) ∧ (err = ESUCCESS → ¬ v ∈ vols0 ∧ vols = vols0[v, fill(mkebatbl(n), unmapped)] ∧ q1.lebrefs ⊆ ∅ ++ (VTBL_VOLID × VTBL_LNUM)) ∧ (err ≠ ESUCCESS → q1.lebrefs ⊆ q.lebrefs ∧ vols = vols0)))

User applied rule skip call

And obtained the following new goals

Rule argument

pos: right 1

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