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Proof step 123 from proof inv-allocate-gnd (previous step)

# lpt0 = # avol0, # lpt1 = # avol0, # lpt0 = # avol, isbuf1 ↔ false, lpt1[n0] = mklp(0, m1, LP_FREE, m2), avol = avol0[n0, unmapped], err = err0, freelist = n0 ' + nx0, keyset(gch) = gc-heap(lpt1, log1), log = log1, n = n0, n0 < # avol0, awbuf-inv(avol0, bleb), awbuf-inv(avol, bleb), bin-heap-inv(gch, lpt1), buf-ro-rw-mode(false, bleb, lpt1, avol0), bufs-log-only(bleb, log1, lpt1), freelist-cons(lpt1, n0 ' + nx0), log-group-block(log1, lpt1), lpt-free-unref(lpt0), lpt-free-unref(lpt1), lpt-leb-size(lpt0), lpt-leb-size(lpt1), lpt-ram-flash(lpt1, lpt0, log1), synced(avol0), ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪skip⟫ ( lpt-free-unref(lpt1) ∧ freelist-cons(lpt1, freelist) ∧ log1 = log ∧ bin-heap-inv(gch, lpt1) ∧ keyset(gch) = gc-heap(lpt1, log) ∧ bufs-log-only(bleb, log, lpt1) ∧ # lpt1 = # avol ∧ ¬ dups(log) ∧ log-group-block(log, lpt1) ∧ buf-ro-rw-mode(isbuf1, bleb, lpt1, avol) ∧ lpt-leb-size(lpt1) ∧ lpt-ram-flash(lpt1, lpt0, log) ∧ awbuf-inv(avol, bleb)), buffered(n0) = bleb, err = ESUCCESS, dups(log1)

Heuristic symbolic execution applied rule skip right

And closed the goal!

Rule argument

Additional information

Used simplifier rules: ⊦ # avol[n, aleb] = # avol; (s)%⊦ bleb ≠ buffered(n) ∧ awbuf-inv(avol, bleb) → awbuf-inv(avol[n, unmapped], bleb); (s)% ⊦ ⌊err⌋ → err ≠ ESUCCESS; (s)%⊦ bleb ≠ buffered(n) → ( buf-ro-rw-mode(boolvar, bleb, lpt, avol[n, aleb]) ↔ buf-ro-rw-mode(boolvar, bleb, lpt, avol)); (s)