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Theorem refine-write-buf

bleb ≠ nobuffer, # avol[bleb.leb].data + n ≤ LEB_SIZE, n ≤ # buf, abs(avol, bleb0, wbuf, avol0, rofs), bleb = bleb0, adr = adr0, m = m0, plog = plog0, lpt = lpt0, ns = ns0, rofs0 ↔ rofs, awbuf-inv(avol, bleb), # lpt = # avol, wbuf-cons(bleb0, wbuf, avol0, rofs), m1 = EB_PAGE_SIZE, ebm-vol-inv(avol0), # lpt0 = # avol0 ⊦ ⟪wbuf_write_buf#(n, buf, bleb0, m1, adr0, m0, plog0, lpt0, ns0; wbuf, rofs, avol0; err)⟫ ⟨awbuf_write_buf#(n, buf, adr, m, plog, lpt, ns, bleb; avol, rofs0; err0)⟩ ( (abs(avol, bleb0, wbuf, avol0, rofs) ∧ bleb = bleb0 ∧ adr = adr0 ∧ m = m0 ∧ plog = plog0 ∧ lpt = lpt0 ∧ ns = ns0 ∧ (rofs0 ↔ rofs)) ∧ err = err0)

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