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Proof step 9 from proof inv-add-ind (previous step)

# lpt1 = # avol, # lpt0 = # avol, isbuf0 ↔ isbuf1, lpt1[bleb.leb] = mklp(m1, m3, lpf, m2), adr = adr0, keyset(gch) = gc-heap(lpt1, log0), log = log0, lpt = lpt0, m = m0, awbuf-inv(avol, bleb), bin-heap-inv(gch, lpt1), buf-ro-rw-mode(isbuf1, 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), ¬ isbuf1 → bleb.isbuf? ∧ bleb.leb < # avol ∧ lpf = LP_INDEX_NODES ∧ avol[bleb.leb].mapped? ∧ (m3 + 2 * NODE_HEADER_SIZE + ind.alignedsize ≤ LEB_SIZE → m3 = # avol[bleb.leb].data) ⊦ ⟪isbuf := isbuf0; if isbuf then err := EROFS else let buf = mkbuf(2 * NODE_HEADER_SIZE + ind.alignedsize), m = ?, bleb1 = ? in {awbuf_get_buf#(adr0, m0, log0, avol, lpt0, ns, bleb, isbuf1; ; bleb1); encode_index_node#(ind, 0; m, buf; err); if err = ESUCCESS then if ¬ lpt1[bleb1.leb].size + m ≤ LEB_SIZE then {debug#("persistence: trying to write beyond LEB size"); awbuf_enter_readonly#(adr0, m0, log0, avol, lpt0, ns, bleb; ; isbuf1); err := ENOSPC} else {awbuf_write_buf#(m, buf, adr0, m0, log0, lpt0, ns, bleb; avol, isbuf1; err); if err = ESUCCESS then {adr := @(bleb1.leb, lpt1[bleb1.leb].size, m); lpt1[bleb1.leb] := mklp(lpt1[bleb1.leb].ref-size, lpt1[bleb1.leb].size + m, lpt1[bleb1.leb].flags, lpt1[bleb1.leb].gcheapidx)} else lpt1[bleb1.leb] := mklp(lpt1[bleb1.leb].ref-size, LEB_SIZE, lpt1[bleb1.leb].flags, lpt1[bleb1.leb].gcheapidx)} else {debug#("persistence: could not encode index node"); awbuf_enter_readonly#(adr0, m0, log0, avol, lpt0, ns, bleb; ; isbuf1)}}⟫ ( 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(isbuf1, bleb, lpt1, avol) ∧ lpt-leb-size(lpt1) ∧ lpt-ram-flash(lpt1, lpt0, log0) ∧ awbuf-inv(avol, bleb) ∧ # lpt0 = # avol)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Rule argument

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