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Proof step 249 from proof refine-write (previous step)

# apebs0 = # wlar, # buf = # buf0, LEB_SIZE = (n1 + n2) + vtblpnum5, apebs0[n4] = mkpeb(aehdr, avhdr, buf2, m0, false), wlar[n4] = wl-entry(m1, used), avols[v][vtblpnum3] = mapped(buf2, m), vols[v][vtblpnum3] = ⌜n4⌝ , apebs = apebs0[vols[v][vtblpnum3].pnum, mkpeb(aehdr, avhdr, subarray(buf2, 0, vtblpnum5) + subarray(buf3, n3, n2) + mkempbuf(n1), vtblpnum5 + n2, false)], buf0 = mkbuf(vtblpnum5 + n5), buf1 = buf, err = err0, err2 = err, n = vtblpnum5, n0 = 0, avhdr.valid?, aehdr.valid?, vtblpnum3 < # vols[v], vols[v][vtblpnum3].pnum < # apebs0, n2 < n5, vtblpnum3 < # avols[v], n4 < # wlar, abs(avols, apebs0, vols, q), bflipset-cons(bflipset, wlar), ebm-cons(avols), is-aligned(n2, EB_PAGE_SIZE), is-aligned(n5, EB_PAGE_SIZE), is-aligned(vtblpnum5, EB_PAGE_SIZE), range=(buf, n0 + n, buf0, n0 + n, # buf0 - n0 + n), range=(buf, 0, buf0, 0, n0), ubi-io-inv(apebs0[n4, mkpeb(aehdr, avhdr, subarray(buf2, 0, vtblpnum5) + subarray(buf3, n3, n2) + mkempbuf(n1), vtblpnum5 + n2, false)]), ubi-io-inv(apebs0), ubi-io-peb-inv(mkpeb(aehdr, avhdr, buf2, m0, false)), unique-sqns(apebs0[n4, mkpeb(aehdr, avhdr, subarray(buf2, 0, vtblpnum5) + subarray(buf3, n3, n2) + mkempbuf(n1), vtblpnum5 + n2, false)]), unique-sqns(apebs0), valid-ebatbl (apebs0[n4, mkpeb(aehdr, avhdr, subarray(buf2, 0, vtblpnum5) + subarray(buf3, n3, n2) + mkempbuf(n1), vtblpnum5 + n2, false)], wlar, vols, vtblpnum4), valid-ebatbl(apebs0, wlar, vols, vtblpnum4), valid-eraseq(apebs0[n4, mkpeb(aehdr, avhdr, subarray(buf2, 0, vtblpnum5) + subarray(buf3, n3, n2) + mkempbuf(n1), vtblpnum5 + n2, false)], q), valid-eraseq(apebs0, q), valid-eraseq(wlar, q), valid-eraseq(q), valid-global-sqn(apebs0[n4, mkpeb(aehdr, avhdr, subarray(buf2, 0, vtblpnum5) + subarray(buf3, n3, n2) + mkempbuf(n1), vtblpnum5 + n2, false)], sqnum), valid-global-sqn(apebs0, sqnum), valid-vtbl(apebs0, vols, wlar, vtblpnum4), valid-wl(apebs0[n4, mkpeb(aehdr, avhdr, subarray(buf2, 0, vtblpnum5) + subarray(buf3, n3, n2) + mkempbuf(n1), vtblpnum5 + n2, false)], wlar), valid-wl(apebs0, wlar), v ∈ vols, v ∈ avols, n3 + n2 ≤ # buf3, 0 + vtblpnum5 ≤ # buf2, m0 ≤ LEB_SIZE, m ≤ LEB_SIZE, n2 + vtblpnum5 ≤ LEB_SIZE, m0 ≤ vtblpnum5, m ≤ vtblpnum5, n5 + n3 ≤ # buf3, n3 + n5 ≤ # buf3, vtblpnum5 + n5 ≤ LEB_SIZE, vtblpnum5 ≤ LEB_SIZE, ⌊err3⌋ , ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪if err2 = ESUCCESS then {buf1 := copy(buf3, n3, buf1, vtblpnum5, n5); debug#("ubi: moving data from PEB " + vols[v][vtblpnum3].pnum.toString); ubi_change#(v, vtblpnum3, vtblpnum5 + n5, buf1, EB_PAGE_SIZE; vols, wlar, q, bflipset, vtblpnum4, sqnum, apebs; err2)} else debug#("ubi: failed to read data from PEB " + vols[v][vtblpnum3].pnum.toString)⟫ ⟨ebm_write#(v, vtblpnum3, vtblpnum5, n3, n5, buf3; avols; err1)⟩ (abs(avols, apebs, vols, q) ∧ err2 = err1), vols[v][vtblpnum3] = unmapped, err = ESUCCESS, n2 = 0, vtblpnum4 = n4, VTBL_VOLID ∈ vols

Heuristic symbolic execution applied rule if negative right

And obtained the following new goals

Rule argument

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