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Proof step 15 from proof refine-get-iblock-refsize (previous step)

# lpt = # avol, # lpt0 = # avol, lpt[m] = mklp(m4, m5, LP_INDEX_NODES, m6), istore2[m] = indexblock(indx, lax, m4), adr = adr0, gstore = gstore1, gstore0 = gstore2, istore = istore1, istore0 = istore2, keyset(gch) = gc-heap(lpt, log0), log = log0, maxino = m0, ns = ns0, remove-refsize0(gstore1) = gstore1, remove-refsize0(istore1) = istore1, elems log0 ∩ ginval = ∅, dom gstore1 ∪ elems log0 = dom gstore2 ∪ ginval, ginval < # avol, m < # avol, abs-gstore(avol, lpt, gstore2, ginval), abs-istore(avol, lpt, istore2), awbuf-inv(avol, bleb), bin-heap-inv(gch, lpt), buf-ro-rw-mode(pstate = readonly, bleb, lpt, avol), bufs-log-only(bleb, log0, lpt), flash-lpt-cons(lpt0, istore1, gstore1), freelist-cons(lpt, freelist), inv(gstore2 \ ginval), inv(gstore1), inv(istore2), inv(istore1), inv(indexblock(indx, lax, m4)), log-group-block(log0, lpt), lpt-free-unref(lpt), lpt-free-unref(lpt0), lpt-leb-size(lpt), lpt-leb-size(lpt0), lpt-ram-flash(lpt, lpt0, log0), m ∈ istore2, istore1 ⊑ istore2, isbuf → synced(avol), pstate = unbuffered → bleb = nobuffer, pstate ≠ unbuffered ∧ pstate ≠ readonly → bleb = buffered(pstate.lnum), pstate.journal? → log0 ≠ [] ∧ pstate.lnum = log0.last ∧ pstate.lnum ∈ gstore2, pstate.index? → pstate.lnum ∈ istore2, pstate = unbuffered → isbuf ⊦ ⟨n := istore0[m].ref-size⟩ ( (isbuf → synced(avol)) ∧ (pstate = unbuffered → bleb = nobuffer) ∧ (pstate ≠ unbuffered ∧ pstate ≠ readonly → bleb = buffered(pstate.lnum)) ∧ m4 = n), dups(log0)

Heuristic symbolic execution applied rule assign right

And closed the goal!

Rule argument

Additional information

Used simplifier rules: fwd-in-istore-lpt: ⊦ n ∈ istore ∧ abs-istore(avol, lpt, istore) → n < # lpt ∧ lpt[n].ref-size = istore[n].ref-size ∧ lpt[n].flags = LP_INDEX_NODES;% ⊦ indexblock(indx, lax, m).ref-size = m; (s)