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Proof step 12 from proof inv-deallocate-gnd (previous step)

# lpt1 = # avol, # lpt0 = # avol, isbuf0 ↔ isbuf2, lpt1[n] = mklp(m0, m1, LP_GROUP_NODES, m2), keyset(gch) = gc-heap(lpt1, log0), log = log0, lpt = lpt0, n < # avol, awbuf-inv(avol, bleb), bin-heap-inv(gch, lpt1), buf-ro-rw-mode(isbuf2, bleb, lpt1, avol), bufs-log-only(bleb, log0, lpt1), freelist-cons(lpt1, freelist), log-group-block(log0, lpt1), lpt-free-unref(lpt1), lpt-free-unref(lpt0), lpt-leb-size(lpt1), lpt-leb-size(lpt0), lpt-ram-flash(lpt1, lpt0, log0), synced(avol) ⊦ ⟪if isbuf0 then err := EROFS else {awbuf_unmap#(n, adr, m, log0, lpt0, ns, bleb, isbuf2; avol); lpt1[n].flags := LP_FREE; lpt1[n].ref-size := 0; lpt1[n] := mklp(lpt1[n].ref-size, 0, lpt1[n].flags, lpt1[n].gcheapidx); freelist := freelist + n '; gc_heap_remove#(lpt1[n].gcheapidx; gch, lpt1); err := ESUCCESS}⟫ ( lpt-free-unref(lpt1) ∧ freelist-cons(lpt1, freelist) ∧ bin-heap-inv(gch, lpt1) ∧ keyset(gch) = gc-heap(lpt1, log0) ∧ bufs-log-only(bleb, log0, lpt1) ∧ # lpt1 = # avol ∧ log-group-block(log0, lpt1) ∧ buf-ro-rw-mode(isbuf2, bleb, lpt1, avol) ∧ lpt-leb-size(lpt1) ∧ lpt-ram-flash(lpt1, lpt0, log0) ∧ awbuf-inv(avol, bleb) ∧ # lpt0 = # avol), dups(log0), n ∈ log0

Heuristic conditional right split applied rule if right

And obtained the following new goals

Rule argument

pos: right 1

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