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Proof step 7 from proof inv-sync (previous step)

# lpt = # avol, # lpt0 = # avol, isbuf0 ↔ isbuf, lpt[bleb.leb] = mklp(m, m1, lpf, m4), bleb0 = bleb, keyset(gch) = gc-heap(lpt, log0), log = log0, m2 = m0, m3 = LEB_SIZE, awbuf-inv(avol, bleb), bin-heap-inv(gch, lpt), buf-ro-rw-mode(isbuf, bleb, lpt, avol), bufs-log-only(bleb, log0, lpt), freelist-cons(lpt, freelist), log-group-block(log0, lpt), lpt-free-unref(lpt), lpt-free-unref(lpt0), lpt-leb-size(lpt), lpt-leb-size(lpt0), lpt-ram-flash(lpt, lpt0, log0), bleb.isbuf? ∧ ¬ isbuf → bleb.leb < # avol ∧ # avol[bleb.leb].data ≤ LEB_SIZE ∧ avol[bleb.leb].mapped? ∧ m1 = # avol[bleb.leb].data ∧ lpf ≠ LP_FREE ∧ is-aligned(# avol[bleb.leb].data, 2 * NODE_HEADER_SIZE) ⊦ ⟪err := ESUCCESS; let bleb = ?, isbuf = ?, m1 = ? in {awbuf_get_buf#(adr, m2, log, avol, lpt0, ns, bleb0, isbuf0; ; bleb); awbuf_is_readonly#(adr, m2, log, avol, lpt0, ns, bleb0, isbuf0; ; isbuf); awbuf_get_page_size#(adr, m2, log, avol, lpt0, ns, bleb0, isbuf0; ; m1); if ¬ isbuf then if bleb.isbuf? then let m0 = lpt[bleb.leb].size in if ¬ is-aligned(m0, m1) then let m = m1 - m0 % m1 in let buf = mkbuf(m) in {persistence_encode_padding_node#(; buf; err); if err = ESUCCESS then {awbuf_write_buf#(# buf, buf, adr, m2, log, lpt0, ns, bleb0; avol, isbuf0; err); if err = ESUCCESS then lpt[bleb.leb].size := lpt[bleb.leb].size + m else {debug#("persistence: flushing of LEB " + bleb.leb.toString + " failed"); lpt[bleb.leb].size := m3; awbuf_enter_readonly#(adr, m2, log, avol, lpt0, ns, bleb0; ; isbuf0)}} else {debug#("persistence: could not encode padding node"); awbuf_enter_readonly#(adr, m2, log, avol, lpt0, ns, bleb0; ; isbuf0)}} else err := EROFS}⟫ ( lpt-free-unref(lpt) ∧ freelist-cons(lpt, freelist) ∧ bin-heap-inv(gch, lpt) ∧ keyset(gch) = gc-heap(lpt, log0) ∧ bufs-log-only(bleb, log0, lpt) ∧ # lpt = # avol ∧ log-group-block(log0, lpt) ∧ buf-ro-rw-mode(isbuf0, bleb, lpt, avol) ∧ lpt-leb-size(lpt) ∧ lpt-ram-flash(lpt, 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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