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Proof step 29 from proof inv-write (previous step)

# apebs0 = # wlar, # apebs = # wlar, wlar[m0] = wl-entry(m1, used), apebs[m0] = mkpeb(aehdr, avhdr, buf0, m, false), vols[v][vtblpnum4] = ⌜m0⌝ , buf1 = mkbuf(vtblpnum3 + n), err ≠ ESUCCESS, m0 ≠ vtblpnum, n ≠ 0, vtblpnum4 < # vols[v], m0 < # wlar, bflipset-cons(bflipset, wlar), is-aligned(vtblpnum3, EB_PAGE_SIZE), is-aligned(n, EB_PAGE_SIZE), ubi-io-inv(apebs0), ubi-io-inv(apebs), ubi-io-peb-inv(mkpeb(aehdr, avhdr, buf0, m, false)), unique-sqns(apebs0), unique-sqns(apebs), valid-ebatbl(apebs0, wlar, vols, vtblpnum), valid-ebatbl(apebs, wlar, vols, vtblpnum), valid-eraseq(apebs0, q), valid-eraseq(apebs, q), valid-eraseq(wlar, q), valid-eraseq(q), valid-global-sqn(apebs0, sqnum), valid-global-sqn(apebs, sqnum), valid-peb(v, vtblpnum4, mkpeb(aehdr, avhdr, buf0, m, false)), valid-peb(v, vtblpnum4, apebs0[m0]), valid-peb(mkpeb(aehdr, avhdr, buf0, m, false)), valid-vtbl(apebs0, vols, wlar, vtblpnum), valid-vtbl(apebs, vols, wlar, vtblpnum), valid-wl(apebs0, wlar), valid-wl(apebs, wlar), v ∈ vols, vtblpnum3 + n ≤ LEB_SIZE, n0 + n ≤ # buf, m ≤ vtblpnum3, ¬ vtblpnum ∈ q, ¬ VTBL_VOLID ∈ vols, ¬ m0 ∈ q ⊦ ⟪aubi_io_read_data#(m0, 0, 0, vtblpnum3, apebs0; buf1; bitflips, err); if err = ESUCCESS then {buf1 := copy(buf, n0, buf1, vtblpnum3, n); debug#("ubi: moving data from PEB " + m0.toString); ubi_change#(v, vtblpnum4, vtblpnum3 + n, buf1, EB_PAGE_SIZE; vols, wlar, q, bflipset, vtblpnum, sqnum, apebs0; err)} else debug#("ubi: failed to read data from PEB " + m0.toString)⟫ ( # apebs0 = # wlar ∧ unique-sqns(apebs0) ∧ valid-global-sqn(apebs0, sqnum) ∧ valid-wl(apebs0, wlar) ∧ valid-eraseq(q) ∧ valid-eraseq(wlar, q) ∧ valid-eraseq(apebs0, q) ∧ ¬ VTBL_VOLID ∈ vols ∧ bflipset-cons(bflipset, wlar) ∧ valid-ebatbl(apebs0, wlar, vols, vtblpnum) ∧ valid-vtbl(apebs0, vols, wlar, vtblpnum) ∧ ubi-io-inv(apebs0))

Heuristic nonrec nowhile calls applied rule call right

And obtained the following new goals

Proof step 30:
# apebs1 = # wlar, # apebs0 = # wlar, vols[v][vtblpnum4] = ⌜m0⌝ , apebs1[m0] = mkpeb(aehdr, avhdr, buf2, m, false), wlar[m0] = wl-entry(m1, used), apebs = apebs0, buf0 = buf1, buf1 = mkbuf(vtblpnum3 + n2), n = vtblpnum3, n0 = 0, vtblpnum = 0, vtblpnum0 = m0, m0 < # wlar, vtblpnum4 < # vols[v], bflipset-cons(bflipset, wlar), is-aligned(n2, EB_PAGE_SIZE), is-aligned(vtblpnum3, EB_PAGE_SIZE), ubi-io-inv(apebs1), ubi-io-inv(apebs0), ubi-io-peb-inv(mkpeb(aehdr, avhdr, buf2, m, false)), unique-sqns(apebs1), unique-sqns(apebs0), valid-ebatbl(apebs1, wlar, vols, vtblpnum1), valid-ebatbl(apebs0, wlar, vols, vtblpnum1), valid-eraseq(q), valid-eraseq(wlar, q), valid-eraseq(apebs1, q), valid-eraseq(apebs0, q), valid-global-sqn(apebs1, sqnum), valid-global-sqn(apebs0, sqnum), valid-peb(mkpeb(aehdr, avhdr, buf2, m, false)), valid-peb(v, vtblpnum4, apebs0[m0]), valid-peb(v, vtblpnum4, mkpeb(aehdr, avhdr, buf2, m, false)), valid-vtbl(apebs1, vols, wlar, vtblpnum1), valid-vtbl(apebs0, vols, wlar, vtblpnum1), valid-wl(apebs1, wlar), valid-wl(apebs0, wlar), v ∈ vols, m ≤ vtblpnum3, n1 + n2 ≤ # buf, vtblpnum3 + n2 ≤ LEB_SIZE ⊦ ⟪if ubi-io-read-data-pre(vtblpnum0, vtblpnum, n0, n, buf0, apebs) then {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} else abort; if err = ESUCCESS then {buf1 := copy(buf, n1, buf0, vtblpnum3, n2); debug#("ubi: moving data from PEB " + m0.toString); ubi_change#(v, vtblpnum4, vtblpnum3 + n2, buf1, EB_PAGE_SIZE; vols, wlar, q, bflipset, vtblpnum1, sqnum, apebs0; err)} else debug#("ubi: failed to read data from PEB " + m0.toString)⟫ ( # apebs0 = # wlar ∧ unique-sqns(apebs0) ∧ valid-global-sqn(apebs0, sqnum) ∧ valid-wl(apebs0, wlar) ∧ valid-eraseq(q) ∧ valid-eraseq(wlar, q) ∧ valid-eraseq(apebs0, q) ∧ ¬ VTBL_VOLID ∈ vols ∧ bflipset-cons(bflipset, wlar) ∧ valid-ebatbl(apebs0, wlar, vols, vtblpnum1) ∧ valid-vtbl(apebs0, vols, wlar, vtblpnum1) ∧ ubi-io-inv(apebs0)), err = ESUCCESS, m0 = vtblpnum1, n2 = 0, vtblpnum1 ∈ q, VTBL_VOLID ∈ vols, m0 ∈ q

Rule argument

pos: right 1

Additional information

Used simplifier rules: aubi_io_read_data#(PNUM, OFFSET, N0, N, APEBS; BUF; BITFLIPS, ERR) {if ubi-io-read-data-pre(PNUM, OFFSET, N0, N, BUF, APEBS) then {fail_or_success#(; ; ERR); BITFLIPS := ?; if ERR = ESUCCESS then BUF := copy(APEBS[PNUM].data, OFFSET, BUF, N0, N) else choose BUF0 with # BUF0 = # BUF ∧ range=(BUF0, 0, BUF, 0, N0) ∧ range=(BUF0, N0 + N, BUF, N0 + N, # BUF - N0 + N) in BUF := BUF0} else abort };