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Proof step 20 from proof refine-write-data (previous step)

apebs[m3] = mkpeb(aehdr, avhdr, buf0, m2, false), pebs[m3] = mkpeb(buf1, 2 * EB_PAGE_SIZE + m2, false), aehdr.valid?, avhdr.valid?, m3 < # apebs, m3 < # pebs, abs(pebs, apebs), abs-peb(mkpeb(buf1, 2 * EB_PAGE_SIZE + m2, false), mkpeb(aehdr, avhdr, buf0, m2, false)), is-aligned(m1, EB_PAGE_SIZE), is-aligned(n, EB_PAGE_SIZE), mtd-cons(pebs), ubi-io-inv(apebs), m2 ≤ m1, m1 + n ≤ LEB_SIZE, n2 + n ≤ # buf, (m1 + 2 * EB_PAGE_SIZE) + n ≤ PEB_SIZE ⊦ ⟨aubi_io_write_data#(m3, m1, n2, n, buf; apebs; err1)⟩ ( abs(pebs[m3, (pebs[m3].data:= copy(buf, n2, pebs[m3].data, m1 + 2 * EB_PAGE_SIZE, n)).fill:= ((m1 + 2 * EB_PAGE_SIZE) + n)], apebs) ∧ ESUCCESS = err1)

Heuristic nonrecursive calls applied rule call right

And obtained the following new goals

Proof step 21:
pebs[m3] = mkpeb(buf1, 2 * EB_PAGE_SIZE + m2, false), apebs[m3] = mkpeb(aehdr, avhdr, buf0, m2, false), m = m1, m0 = m3, n0 = n, n1 = n2, avhdr.valid?, aehdr.valid?, m3 < # pebs, m3 < # apebs, abs(pebs, apebs), abs-peb(mkpeb(buf1, 2 * EB_PAGE_SIZE + m2, false), mkpeb(aehdr, avhdr, buf0, m2, false)), is-aligned(n, EB_PAGE_SIZE), is-aligned(m1, EB_PAGE_SIZE), mtd-cons(pebs), ubi-io-inv(apebs), (m1 + 2 * EB_PAGE_SIZE) + n ≤ PEB_SIZE, n2 + n ≤ # buf, m1 + n ≤ LEB_SIZE, m2 ≤ m1 ⊦ ⟨if ubi-io-write-data-pre(m0, m, n1, n0, buf, apebs) then {fail_or_success#(; ; err); if err = ESUCCESS then apebs[m0] := mkpeb (apebs[m0].echdr, apebs[m0].vidhdr, subarray(apebs[m0].data, 0, m) + subarray(buf, n1, n0) + mkempbuf(LEB_SIZE - m - n0), m + n0, apebs[m0].bad) else choose n with (n < n0 ∨ n = 0 ∧ n0 = 0) ∧ is-aligned(n, EB_PAGE_SIZE) in if n ≠ 0 then apebs[m0] := mkpeb (apebs[m0].echdr, apebs[m0].vidhdr, subarray(apebs[m0].data, 0, m) + subarray(buf, n1, n) + mkempbuf(LEB_SIZE - m - n), m + n, apebs[m0].bad)} else abort⟩ ( abs(pebs[m3, (pebs[m3].data:= copy(buf, n2, pebs[m3].data, m1 + 2 * EB_PAGE_SIZE, n)).fill:= ((m1 + 2 * EB_PAGE_SIZE) + n)], apebs) ∧ ESUCCESS = err)

Rule argument

pos: right 1

Additional information

Used simplifier rules: aubi_io_write_data#(PNUM, OFFSET, N0, N, BUF; APEBS; ERR) {if ubi-io-write-data-pre(PNUM, OFFSET, N0, N, BUF, APEBS) then {fail_or_success#(; ; ERR); if ERR = ESUCCESS then APEBS[PNUM] := mkpeb (APEBS[PNUM].echdr, APEBS[PNUM].vidhdr, subarray(APEBS[PNUM].data, 0, OFFSET) + subarray(BUF, N0, N) + mkempbuf(LEB_SIZE - OFFSET - N), OFFSET + N, APEBS[PNUM].bad) else choose N1 with (N1 < N ∨ N1 = 0 ∧ N = 0) ∧ is-aligned(N1, EB_PAGE_SIZE) in if N1 ≠ 0 then APEBS[PNUM] := mkpeb (APEBS[PNUM].echdr, APEBS[PNUM].vidhdr, subarray(APEBS[PNUM].data, 0, OFFSET) + subarray(BUF, N0, N1) + mkempbuf(LEB_SIZE - OFFSET - N1), OFFSET + N1, APEBS[PNUM].bad)} else abort };