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Proof step 108 from proof refine-write (previous step)

# apebs = # wlar, # apebs0 = # wlar, wlar[n4] = wl-entry(m1, used), avols[v][vtblpnum3] = mapped(buf2, m), vols[v][vtblpnum3] = ⌜n4⌝ , apebs0[n4] = mkpeb(aehdr, avhdr, buf2, m0, false), apebs = apebs0 [vtblpnum0, mkpeb (apebs0[vtblpnum0].echdr, apebs0[vtblpnum0].vidhdr, subarray(apebs0[vtblpnum0].data, 0, vtblpnum) + subarray(buf, n1, n2) + mkempbuf(LEB_SIZE - vtblpnum - n2), vtblpnum + n2, apebs0[vtblpnum0].bad) ], err = err0, n0 = n, n1 = n3, vtblpnum = vtblpnum5, vtblpnum0 = vols[v][vtblpnum3].pnum, avhdr.valid?, aehdr.valid?, n4 < # wlar, vtblpnum3 < # avols[v], vtblpnum3 < # vols[v], vtblpnum0 < # apebs0, abs(avols, apebs0, vols, q), bflipset-cons(bflipset, wlar), ebm-cons(avols), is-aligned(n2, EB_PAGE_SIZE), is-aligned(n, EB_PAGE_SIZE), is-aligned(vtblpnum5, EB_PAGE_SIZE), ubi-io-inv(apebs), ubi-io-inv(apebs0), ubi-io-peb-inv(mkpeb(aehdr, avhdr, buf2, m0, false)), unique-sqns(apebs), unique-sqns(apebs0), valid-ebatbl(apebs, wlar, vols, vtblpnum4), valid-ebatbl(apebs0, wlar, vols, vtblpnum4), valid-eraseq(apebs, q), valid-eraseq(apebs0, q), valid-eraseq(wlar, q), valid-eraseq(q), valid-global-sqn(apebs, sqnum), valid-global-sqn(apebs0, sqnum), valid-vtbl(apebs, vols, wlar, vtblpnum4), valid-vtbl(apebs0, vols, wlar, vtblpnum4), valid-wl(apebs, wlar), valid-wl(apebs0, wlar), v ∈ avols, v ∈ vols, m0 ≤ vtblpnum5, m ≤ vtblpnum5, n + n3 ≤ # buf, n3 + n ≤ # buf, vtblpnum5 + n ≤ LEB_SIZE, 0 + vtblpnum ≤ # apebs0[vtblpnum0].data, n1 + n2 ≤ # buf, LEB_SIZE - vtblpnum ≥ n2, LEB_SIZE ≥ vtblpnum, n2 < n0 ∨ n2 = 0 ∧ n0 = 0, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪if err ≠ ESUCCESS then {debug#("ubi: failed to write to PEB " + vols[v][vtblpnum3].pnum.toString); let buf1 = mkbuf(vtblpnum5 + n), bitflips = ? in {aubi_io_read_data#(vols[v][vtblpnum3].pnum, 0, 0, vtblpnum5, apebs; buf1; bitflips, err); if err = ESUCCESS then {buf1 := copy(buf, n3, buf1, vtblpnum5, n); debug#("ubi: moving data from PEB " + vols[v][vtblpnum3].pnum.toString); ubi_change#(v, vtblpnum3, vtblpnum5 + n, buf1, EB_PAGE_SIZE; vols, wlar, q, bflipset, vtblpnum4, sqnum, apebs; err)} else debug#("ubi: failed to read data from PEB " + vols[v][vtblpnum3].pnum.toString)}}⟫ ⟨ebm_write#(v, vtblpnum3, vtblpnum5, n3, n, buf; avols; err1)⟩ (abs(avols, apebs, vols, q) ∧ err = err1), vols[v][vtblpnum3] = unmapped, err = ESUCCESS, n = 0, n2 = 0, vtblpnum4 = n4, VTBL_VOLID ∈ vols

Heuristic symbolic execution applied rule if positive right

And obtained the following new goals

Rule argument

pos: right 1

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