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Proof step 17 from proof refine-destroy-buf (previous step)

# buf = EB_PAGE_SIZE, # lpt0 = # avol, # avol0 = # avol, abs(avol, bleb, mkwbuf(buf, m, m1), avol0, false), awbuf-inv(avol, bleb), ebm-vol-inv(avol0), synced(avol), bleb ≠ nobuffer → bleb.leb < # avol ∧ wbuf-cons(mkwbuf(buf, m, m1), avol0[bleb.leb], false) ⊦ ⟨awbuf_destroy_buf#(adr0, m0, plog0, avol, lpt0, ns0, false; bleb; err0)⟩ (avol = avol0 ∧ bleb = nobuffer ∧ ESUCCESS = err0)

Heuristic nonrecursive calls applied rule call right

And obtained the following new goals

Proof step 18:
# avol0 = # avol, # lpt0 = # avol, # buf = EB_PAGE_SIZE, rofs ↔ false, adr = adr0, lpt = lpt0, m = m0, ns = ns0, plog = plog0, abs(avol, bleb, mkwbuf(buf, m2, m1), avol0, false), awbuf-inv(avol, bleb), ebm-vol-inv(avol0), synced(avol), bleb ≠ nobuffer → bleb.leb < # avol ∧ wbuf-cons(mkwbuf(buf, m2, m1), avol0[bleb.leb], false) ⊦ ⟨if synced(avol) then if rofs then err := EROFS else bleb := nobuffer, err := ESUCCESS else abort⟩ (avol = avol0 ∧ bleb = nobuffer ∧ ESUCCESS = err)

Rule argument

pos: right 1

Additional information

Used simplifier rules: awbuf_destroy_buf# (WROOTADR, WMAXINO, WLOG, WVOL, WLPT, WORPHANS, AROFS; WBUFLEB; ERR) {if synced(WVOL) then if AROFS then ERR := EROFS else WBUFLEB := nobuffer, ERR := ESUCCESS else abort };