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Proof step 226 from proof inv-read-gblock-nodes (previous step)

# lpt0 = # avol, # lpt = # avol, # gndx = # lax, # buf = # buf0, avol[m5] = mapped(buf1), ax = ax0, buf0 = mkbuf(LEB_SIZE), buf2 = buf, err = err0, gndx0 = gndx1, m0 = 0, m2 = LEB_SIZE, m3 = m5, n = LEB_SIZE, m5 < # avol, abs-nodes(buf1, gndx, lax, true), awbuf-inv(avol, bleb), buf-ro-rw-mode(isbuf, bleb, lpt0, avol), bufs-log-only(bleb, log0, lpt0), lpt-free-unref(lpt), lpt-leb-size(lpt), lpt-ram-flash(lpt0, lpt, log0), range=(buf, n, buf0, n, # buf0 - n), ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪skip⟫ ((err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err = ESUCCESS → ax = ax0 + lax.to-adr(m5) ∧ gndx0 = gndx1 + gndx)), err = ESUCCESS, err = ENOENT

Heuristic symbolic execution applied rule skip right

And closed the goal!

Rule argument

Additional information

Used simplifier rules: ⊦ # mkbuf(n) = n; (s)% ⊦ m - m = 0; (s)% ⊦ range=(buf, n0, buf0, n1, 0) ↔ n0 ≤ # buf ∧ n1 ≤ # buf0; (s)% ⊦ m ≤ m; (s)% ⊦ ⌊err⌋ → err ≠ ESUCCESS; (s)