| awbuf-inv(avol, bleb), # lpt = # avol, synced(avol0), adr = adr0, m = m0, nx = nx0, lpt0 = lpt, avol0 ↓ avol, ns = ns0 ⊦ ⟨awbuf_is_readonly#(adr0, m0, nx0, avol, lpt, ns0, bleb, isbuf; ; isbuf0)⟩ (synced(avol0) ∧ adr = adr0 ∧ m = m0 ∧ nx = nx0 ∧ lpt0 = lpt ∧ avol0 ↓ avol ∧ ns = ns0) |