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Proof step 77 from proof refine-write-data-wl (previous step)

apebs[m1] = mkpeb(aehdr, avhdr, buf0, 0, false), pebs[m1] = mkpeb(buf1, 2 * EB_PAGE_SIZE, false), n = align↑(datasize(buf, n), EB_PAGE_SIZE), n2 ≠ 0, aehdr.valid?, avhdr.valid?, m1 < # apebs, m1 < # pebs, n2 < n, n2 < LEB_SIZE, n2 < # buf, n2 < datasize(buf, n), abs(pebs, apebs), abs-peb(mkpeb(buf1, 2 * EB_PAGE_SIZE, false), mkpeb(aehdr, avhdr, buf0, 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, ⌊err0⌋ ⊦ ⟨aubi_io_write_data_wl#(m1, n, buf; apebs; err1)⟩ (abs(pebs[m1, (pebs[m1].data:= copy(buf, 0, pebs[m1].data, 2 * EB_PAGE_SIZE, n2)).fill:= (2 * EB_PAGE_SIZE + n2)], apebs) ∧ err0 = err1)

Heuristic nonrecursive calls applied rule call right

And obtained the following new goals

Proof step 78:
pebs[m1] = mkpeb(buf1, 2 * EB_PAGE_SIZE, false), apebs[m1] = mkpeb(aehdr, avhdr, buf2, 0, false), buf0 = buf, m = m1, n = align↑(datasize(buf, n), EB_PAGE_SIZE), avhdr.valid?, aehdr.valid?, n2 < datasize(buf, n), n2 < # buf, n2 < LEB_SIZE, n2 < n, m1 < # pebs, m1 < # apebs, abs(pebs, apebs), abs-peb(mkpeb(buf1, 2 * EB_PAGE_SIZE, false), mkpeb(aehdr, avhdr, buf2, 0, false)), is-aligned(n, EB_PAGE_SIZE), is-aligned(n2, EB_PAGE_SIZE), mtd-cons(pebs), ubi-io-inv(apebs), n ≤ # buf, n ≤ LEB_SIZE, 2 * EB_PAGE_SIZE + n2 ≤ PEB_SIZE, ⌊err0⌋ ⊦ ⟨if ubi-io-write-data-wl-pre(m, n, buf0, apebs) then {fail_or_success#(; ; err); if err = ESUCCESS then apebs[m] := mkpeb(apebs[m].echdr, apebs[m].vidhdr, subarray(buf0, 0, n) + mkempbuf(LEB_SIZE - n), n, apebs[m].bad) else choose buf with # buf ≤ n ∧ is-aligned(# buf, EB_PAGE_SIZE) ∧ ( datasize(buf, # buf) < datasize(buf0, n) ∨ checksum(buf + mkempbuf(n - # buf), datasize(buf0, n)) ≠ checksum(buf0, datasize(buf0, n))) in apebs[m] := mkpeb(apebs[m].echdr, apebs[m].vidhdr, buf + mkempbuf(LEB_SIZE - # buf), # buf, apebs[m].bad)} else abort⟩ (abs(pebs[m1, (pebs[m1].data:= copy(buf, 0, pebs[m1].data, 2 * EB_PAGE_SIZE, n2)).fill:= (2 * EB_PAGE_SIZE + n2)], apebs) ∧ err0 = err), n2 = 0

Rule argument

pos: right 1

Additional information

Used simplifier rules: aubi_io_write_data_wl#(PNUM, N, BUF; APEBS; ERR) {if ubi-io-write-data-wl-pre(PNUM, N, BUF, APEBS) then {fail_or_success#(; ; ERR); if ERR = ESUCCESS then APEBS[PNUM] := mkpeb (APEBS[PNUM].echdr, APEBS[PNUM].vidhdr, subarray(BUF, 0, N) + mkempbuf(LEB_SIZE - N), N, APEBS[PNUM].bad) else choose BUF0 with # 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))) in APEBS[PNUM] := mkpeb (APEBS[PNUM].echdr, APEBS[PNUM].vidhdr, BUF0 + mkempbuf(LEB_SIZE - # BUF0), # BUF0, APEBS[PNUM].bad)} else abort };