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

# lpt0 = # avol, # lpt = # avol, keyset(gch) = gc-heap(lpt, log1), log = log1, log0 = log2, log2 = log1, awbuf-inv(avol, bleb), bin-heap-inv(gch, lpt), buf-ro-rw-mode(isbuf, bleb, lpt, avol), bufs-log-only(bleb, log1, lpt), freelist-cons(lpt, freelist), 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) ⊦ ⟪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⟫ ( lpt-free-unref(lpt) ∧ freelist-cons(lpt, freelist) ∧ log0 = log ∧ bin-heap-inv(gch, lpt) ∧ keyset(gch) = gc-heap(lpt, log) ∧ bufs-log-only(bleb, log, lpt) ∧ # lpt = # avol ∧ ¬ dups(log) ∧ log-group-block(log, lpt) ∧ buf-ro-rw-mode(isbuf, bleb, lpt, avol) ∧ lpt-leb-size(lpt) ∧ lpt-ram-flash(lpt, lpt0, log) ∧ awbuf-inv(avol, bleb) ∧ # lpt0 = # avol), 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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