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Proof step 7 from proof crash-neutral-read-buf (previous step)

# lpt = # avol, avol[m3] = mapped(buf1), m3 < # avol, awbuf-inv(avol, bleb), synced(avol0), avol0 ↓ avol, n ≤ # buf, m0 + n ≤ LEB_SIZE ⊦ ⟨choose err0 with ⌊err0⌋ ∨ err0 = ESUCCESS in err := err0; if err = ESUCCESS then buf := copy(avol[m3].data + mkempbuf(LEB_SIZE - # avol[m3].data), m0, buf, 0, n) else choose buf1 with # buf1 = # buf ∧ range=(buf1, n, buf, n, # buf - n) in buf := buf1⟩ true

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Proof step 8:
# lpt = # avol, avol[m3] = mapped(buf1), m3 < # avol, awbuf-inv(avol, bleb), synced(avol0), avol0 ↓ avol, m0 + n ≤ LEB_SIZE, n ≤ # buf ⊦ ∃ err0. (⌊err0⌋ ∨ err0 = ESUCCESS) ∧ ⟨err := err0; if err = ESUCCESS then buf := copy(avol[m3].data + mkempbuf(LEB_SIZE - # avol[m3].data), m0, buf, 0, n) else choose buf1 with # buf1 = # buf ∧ range=(buf1, n, buf, n, # buf - n) in buf := buf1⟩ true

Proof step 7 from proof crash-neutral-read-buf (previous step)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Rule argument

Additional information