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Proof step 235 from proof refine-write-buf (previous step)

# buf1 = EB_PAGE_SIZE, # lpt0 = # avol1, # avol0 = # avol1, avol0[m4] = mapped(buf2), ¬ rofs0, m4 < # avol1, m2 + n < EB_PAGE_SIZE, m2 < EB_PAGE_SIZE, abs(avol1, buffered(m4), mkwbuf(buf1, # buf2, m2), avol0, false), awbuf-inv(avol1, buffered(m4)), ebm-vol-inv(avol0), is-aligned(# buf2, EB_PAGE_SIZE), # buf2 + m2 + n ≤ LEB_SIZE, n ≤ # buf, # avol1[m4].data + n ≤ LEB_SIZE ⊦ ⟨awbuf_write_buf#(n, buf, adr0, m3, plog0, lpt0, ns0, buffered(m4); avol1, rofs0; err0)⟩ (abs(avol1, buffered(m4), mkwbuf(copy(buf, 0, buf1, m2, n), # buf2, m2 + n), avol0, false) ∧ ¬ rofs0 ∧ ESUCCESS = err0)

Heuristic nonrecursive calls applied rule call right

And obtained the following new goals

Proof step 236:
# avol0 = # avol1, # lpt0 = # avol1, # buf1 = EB_PAGE_SIZE, rofs ↔ rofs0, avol0[m4] = mapped(buf2), adr = adr0, avol = avol1, bleb = buffered(m4), lpt = lpt0, m0 = m3, n0 = n, ns = ns0, plog = plog0, ¬ rofs0, m2 < EB_PAGE_SIZE, m2 + n < EB_PAGE_SIZE, m4 < # avol1, abs(avol1, buffered(m4), mkwbuf(buf1, # buf2, m2), avol0, false), awbuf-inv(avol1, buffered(m4)), ebm-vol-inv(avol0), is-aligned(# buf2, EB_PAGE_SIZE), # avol1[m4].data + n ≤ LEB_SIZE, n ≤ # buf, # buf2 + m2 + n ≤ LEB_SIZE ⊦ ⟨if bleb ≠ nobuffer ∧ # avol[bleb.leb].data + n0 ≤ LEB_SIZE ∧ n0 ≤ # buf then if rofs then err := EROFS else {fail_or_success#(; ; err); let m = bleb.leb in if err = ESUCCESS then avol[m] := mapped(avol[m].data + subarray(buf, 0, n0)) else { choose n with n ≠ 0 ∧ n < n0 ∧ is-aligned(# avol[m].data + n, EB_PAGE_SIZE) in avol[m] := mapped(avol[m].data + subarray(buf, 0, n)) ifnone skip or skip; rofs := true}} else abort⟩ (abs(avol, buffered(m4), mkwbuf(copy(buf, 0, buf1, m2, n), # buf2, m2 + n), avol0, false) ∧ ¬ rofs ∧ ESUCCESS = err)

Rule argument

pos: right 1

Additional information

Used simplifier rules: awbuf_write_buf# (N, BUF, WROOTADR, WMAXINO, WLOG, WLPT, WORPHANS, WBUFLEB ; WVOL, AROFS ; ERR ) {if WBUFLEB ≠ nobuffer ∧ # WVOL[WBUFLEB.leb].data + N ≤ LEB_SIZE ∧ N ≤ # BUF then if AROFS then ERR := EROFS else {fail_or_success#(; ; ERR); let LNUM = WBUFLEB.leb in if ERR = ESUCCESS then WVOL[LNUM] := mapped(WVOL[LNUM].data + subarray(BUF, 0, N)) else { choose N0 with N0 ≠ 0 ∧ N0 < N ∧ is-aligned (# WVOL[LNUM].data + N0, EB_PAGE_SIZE) in WVOL[LNUM] := mapped (WVOL[LNUM].data + subarray(BUF, 0, N0)) ifnone skip or skip; AROFS := true}} else abort };