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Proof step 11 from proof inv-read-buf (previous step)

# lpt = # avol, avol[m3] = mapped(buf1), m3 < # avol, awbuf-inv(avol, bleb), m0 + n ≤ LEB_SIZE, n ≤ # buf, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪choose buf1 with # buf1 = # buf ∧ range=(buf1, n, buf, n, # buf - n) in buf := buf1⟫ true, err0 = ESUCCESS

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Proof step 12:
# buf1 = # buf, # lpt = # avol, avol[m3] = mapped(buf0), m3 < # avol, awbuf-inv(avol, bleb), range=(buf1, n, buf, n, # buf - n), n ≤ # buf, m0 + n ≤ LEB_SIZE, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪buf := buf1⟫ true, err0 = ESUCCESS
Proof step 13:
# lpt = # avol, avol[m3] = mapped(buf1), m3 < # avol, awbuf-inv(avol, bleb), n ≤ # buf, m0 + n ≤ LEB_SIZE, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ err0 = ESUCCESS, ∃ buf1. # buf1 = # buf ∧ range=(buf1, n, buf, n, # buf - n)
Proof step 17:
# lpt = # avol, avol[m3] = mapped(buf1), m3 < # avol, awbuf-inv(avol, bleb), n ≤ # buf, m0 + n ≤ LEB_SIZE, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ err0 = ESUCCESS, ∀ buf1. # buf1 = # buf → # buf ≥ n

Proof step 11 from proof inv-read-buf (previous step)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Rule argument

Additional information