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Proof step 7 from proof inv-move-buf (previous step)

# lpt = # avol, # buf = EB_PAGE_SIZE, m = m3, m0 = m4, wbuf = mkwbuf(buf, m1, m2), ebm-vol-inv(avol), ¬ rofs → bleb = buffered(m4) ∨ (bleb = nobuffer ∨ m2 = 0) ∧ m4 < # avol ∧ avol[m4].mapped? ∧ m3 = # avol[m4].data, bleb ≠ nobuffer → bleb.leb < # avol ∧ wbuf-cons(mkwbuf(buf, m1, m2), avol[bleb.leb], rofs) ⊦ ⟪if rofs then err := EROFS else {err := ESUCCESS; 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], rofs)))

Heuristic conditional right split applied rule if right

And obtained the following new goals

Rule argument

pos: right 1

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