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Proof step 4 from proof refine-allocate-gnd (previous step)

# lpt0 = # avol, # lpt = # avol, isbuf ↔ pstate = readonly, adr = adr0, keyset(gch) = gc-heap(lpt, log1), log = log1, log0 = log1, log2 = log1, ns = ns0, remove-refsize0(istore0) = istore0, remove-refsize0(gstore0) = gstore0, elems log1 ∩ ginval = ∅, dom gstore0 ∪ elems log1 = dom gstore ∪ ginval, ginval < # avol, abs-gstore(avol, lpt, gstore, ginval), abs-istore(avol, lpt, istore), awbuf-inv(avol, bleb), bin-heap-inv(gch, lpt), buf-ro-rw-mode(pstate = readonly, bleb, lpt, avol), bufs-log-only(bleb, log1, lpt), flash-lpt-cons(lpt0, istore0, gstore0), freelist-cons(lpt, freelist), inv(istore0), inv(istore), inv(gstore0), inv(gstore \ ginval), log-group-block(log1, lpt), lpt-free-unref(lpt0), lpt-free-unref(lpt), lpt-leb-size(lpt0), lpt-leb-size(lpt), lpt-ram-flash(lpt, lpt0, log1), synced(avol), istore0 ⊑ istore, pstate.index? → pstate.lnum ∈ istore, pstate.journal? → log1 ≠ [] ∧ pstate.lnum = log1.last ∧ pstate.lnum ∈ gstore, pstate ≠ unbuffered ∧ pstate ≠ readonly → bleb = buffered(pstate.lnum), pstate = unbuffered → bleb = nobuffer ⊦ ⟪if synced(avol) then let n = ? in {persistence_allocate_leb#(adr, m, log, lpt0, ns, bleb, isbuf; n, lpt, freelist, avol; err); if err = ESUCCESS then {awbuf_add_log_leb#(n, 0, adr, m, avol, lpt0, ns, isbuf; log, bleb; err); if err ≠ ESUCCESS then freelist := n + freelist}; if err = ESUCCESS then {lpt[n].flags := LP_GROUP_NODES; log0 := log0 + n}} else abort⟫ ⟨pstate0 := pstate; apersistence_allocate_gnd#(adr0, istore, istore0, gstore0, m, ns0, true; ginval, gstore, log2, pstate; err0)⟩ ( abs-istore(avol, lpt, istore) ∧ abs-gstore(avol, lpt, gstore, ginval) ∧ log2 = log0 ∧ ginval < # lpt ∧ synced(avol) ∧ (pstate = unbuffered → bleb = nobuffer) ∧ (pstate = readonly ↔ pstate0 = readonly) ∧ (pstate ≠ unbuffered ∧ pstate ≠ readonly → bleb = buffered(pstate.lnum)) ∧ err = err0), dups(log1)

Heuristic symbolic execution applied rule if positive right

And obtained the following new goals

Rule argument

pos: right 1

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