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Proof step 90 from proof refine-write-data-wl (previous step)

apebs[m1] = mkpeb(aehdr, avhdr, buf2, 0, false), pebs[m1] = mkpeb(buf3, 2 * EB_PAGE_SIZE, false), buf0 = buf, err = err1, m = m1, n = align↑(datasize(buf, n), EB_PAGE_SIZE), avhdr.valid?, aehdr.valid?, m1 < # apebs, m1 < # pebs, n2 < n, n2 < LEB_SIZE, n2 < # buf, n2 < datasize(buf, n), abs(pebs, apebs), abs-peb(mkpeb(buf3, 2 * EB_PAGE_SIZE, false), mkpeb(aehdr, avhdr, buf2, 0, false)), is-aligned(n2, EB_PAGE_SIZE), is-aligned(n, EB_PAGE_SIZE), mtd-cons(pebs), ubi-io-inv(apebs), 2 * EB_PAGE_SIZE + n2 ≤ PEB_SIZE, n ≤ LEB_SIZE, n ≤ # buf, ⌊err1⌋ ⊦ ∃ buf1. (# buf1 ≤ n → is-aligned(# buf1, EB_PAGE_SIZE) → ¬ datasize(buf1, # buf1) < datasize(buf0, n) → n ≥ # buf1) ∧ ( # buf1 ≤ n ∧ is-aligned(# buf1, EB_PAGE_SIZE) ∧ ( datasize(buf1, # buf1) < datasize(buf0, n) ∨ checksum(buf1 + mkempbuf(n - # buf1), datasize(buf0, n)) ≠ checksum(buf0, datasize(buf0, n)))) ∧ ⟨apebs[m] := mkpeb(apebs[m].echdr, apebs[m].vidhdr, buf1 + mkempbuf(LEB_SIZE - # buf1), # buf1, apebs[m].bad)⟩ (abs(pebs[m1, (pebs[m1].data:= copy(buf, 0, pebs[m1].data, 2 * EB_PAGE_SIZE, n2)).fill:= (2 * EB_PAGE_SIZE + n2)], apebs) ∧ err1 = err), n2 = 0

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 91:
apebs[m1] = mkpeb(aehdr, avhdr, buf2, 0, false), pebs[m1] = mkpeb(buf3, 2 * EB_PAGE_SIZE, false), n = align↑(datasize(buf, n), EB_PAGE_SIZE), n2 ≠ 0, avhdr.valid?, aehdr.valid?, m1 < # apebs, m1 < # pebs, n2 < n, n2 < LEB_SIZE, n2 < # buf, n2 < datasize(buf, n), abs(pebs, apebs), abs-peb(mkpeb(buf3, 2 * EB_PAGE_SIZE, false), mkpeb(aehdr, avhdr, buf2, 0, false)), is-aligned(n2, EB_PAGE_SIZE), is-aligned(n, EB_PAGE_SIZE), mtd-cons(pebs), ubi-io-inv(apebs), 2 * EB_PAGE_SIZE + n2 ≤ PEB_SIZE, n ≤ LEB_SIZE, n ≤ # buf, ⌊err1⌋ ⊦ ∃ buf0. # buf0 ≤ n ∧ is-aligned(# buf0, EB_PAGE_SIZE) ∧ ( datasize(buf0, # buf0) < datasize(buf, n) ∨ checksum(buf0 + mkempbuf(n - # buf0), datasize(buf, n)) ≠ checksum(buf, datasize(buf, n))) ∧ ⟨apebs[m1] := mkpeb(apebs[m1].echdr, apebs[m1].vidhdr, buf0 + mkempbuf(LEB_SIZE - # buf0), # buf0, apebs[m1].bad)⟩ abs(pebs[m1, (pebs[m1].data:= copy(buf, 0, pebs[m1].data, 2 * EB_PAGE_SIZE, n2)).fill:= (2 * EB_PAGE_SIZE + n2)], apebs)

Rule argument

Additional information

Used simplifier rules: abs-fwd: ⊦ n < # pebs ∧ pebs[n] = peb ∧ abs(pebs, apebs) → n < # apebs ∧ abs-peb(peb, apebs[n]); (forward) from specification ubi-io-abs% ⊦ n ≥ m ↔ m ≤ n; (s)