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Proof step 16 from proof inv-add-ind (previous step)

# lpt1 = # avol, # lpt0 = # avol, isbuf ↔ false, lpt1[n] = mklp(m1, m3, LP_INDEX_NODES, m2), avol[n] = mapped(buf), adr = adr0, bleb0 = buffered(n), keyset(gch) = gc-heap(lpt1, log0), log = log0, lpt = lpt0, m = m0, n < # avol, awbuf-inv(avol, buffered(n)), bin-heap-inv(gch, lpt1), buf-ro-rw-mode(false, buffered(n), lpt1, avol), bufs-log-only(buffered(n), 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), m3 + 2 * NODE_HEADER_SIZE + ind.alignedsize ≤ LEB_SIZE → m3 = # buf ⊦ ⟪buf := mkbuf(2 * NODE_HEADER_SIZE + ind.alignedsize); encode_index_node#(ind, 0; m, buf; err); isbuf1 := false; bleb1 := buffered(n); if err = ESUCCESS then if ¬ lpt1[bleb0.leb].size + m ≤ LEB_SIZE then {debug#("persistence: trying to write beyond LEB size"); awbuf_enter_readonly#(adr0, m0, log0, avol, lpt0, ns, bleb1; ; isbuf1); err := ENOSPC} else {awbuf_write_buf#(m, buf, adr0, m0, log0, lpt0, ns, bleb1; avol, isbuf1; err); if err = ESUCCESS then {adr := @(bleb0.leb, lpt1[bleb0.leb].size, m); lpt1[bleb0.leb] := mklp(lpt1[bleb0.leb].ref-size, lpt1[bleb0.leb].size + m, lpt1[bleb0.leb].flags, lpt1[bleb0.leb].gcheapidx)} else lpt1[bleb0.leb] := mklp(lpt1[bleb0.leb].ref-size, LEB_SIZE, lpt1[bleb0.leb].flags, lpt1[bleb0.leb].gcheapidx)} else {debug#("persistence: could not encode index node"); awbuf_enter_readonly#(adr0, m0, log0, avol, lpt0, ns, bleb1; ; isbuf1)}⟫ ( lpt-free-unref(lpt1) ∧ freelist-cons(lpt1, freelist) ∧ bin-heap-inv(gch, lpt1) ∧ keyset(gch) = gc-heap(lpt1, log0) ∧ bufs-log-only(bleb1, log0, lpt1) ∧ # lpt1 = # avol ∧ log-group-block(log0, lpt1) ∧ buf-ro-rw-mode(isbuf1, bleb1, lpt1, avol) ∧ lpt-leb-size(lpt1) ∧ lpt-ram-flash(lpt1, lpt0, log0) ∧ awbuf-inv(avol, bleb1) ∧ # lpt0 = # avol)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Rule argument

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