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Proof step 23 from proof inv-add-log-leb (previous step)

# lpt = # avol, # buf = EB_PAGE_SIZE, rofs ↔ false, m = m4, m0 = m3, wbuf = mkwbuf(buf, m1, m2), ebm-vol-inv(avol), bleb ≠ nobuffer → bleb.leb < # avol ∧ wbuf-cons(mkwbuf(buf, m1, m2), avol[bleb.leb], false), bleb = buffered(m3) ∨ (bleb = nobuffer ∨ m2 = 0) ∧ m3 < # avol ∧ avol[m3].mapped? ∧ m4 = # avol[m3].data ⊦ ⟪if bleb ≠ buffered(m0) then {bleb := buffered(m0); wbuf.offset := m; wbuf.nbytes := 0}⟫ (# wbuf.content = EB_PAGE_SIZE ∧ (bleb ≠ nobuffer → bleb.leb < # avol ∧ wbuf-cons(wbuf, avol[bleb.leb], false)))

Heuristic conditional right split applied rule if right

And obtained the following new goals

Rule argument

pos: right 1

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