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Proof step 4 from proof inv-requires-commit (previous step)

# lpt = # avol, # lpt0 = # avol, isbuf0 ↔ isbuf, log = log0, log1 = log0, awbuf-inv(avol, bleb), buf-ro-rw-mode(isbuf, bleb, lpt0, avol), bufs-log-only(bleb, log1, lpt0), lpt-free-unref(lpt), lpt-leb-size(lpt), lpt-ram-flash(lpt0, lpt, log1) ⊦ ⟪isbuf := ?⟫ true

Heuristic symbolic execution applied rule assign right

And closed the goal!

Rule argument

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