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

avol[m2] = mapped(buf1), m2 < # avol, ebm-vol-inv(avol), n2 + n1 ≤ # buf, m1 + n1 ≤ LEB_SIZE, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪choose buf1 with # buf1 = # buf ∧ range=(buf, 0, buf1, 0, n2) ∧ range=(buf, n2 + n1, buf1, n2 + n1, # buf - n2 + n1) in buf := buf1⟫ true, err0 = ESUCCESS

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Proof step 12:
# buf1 = # buf, avol[m2] = mapped(buf0), m2 < # avol, ebm-vol-inv(avol), range=(buf, 0, buf1, 0, n2), range=(buf, n2 + n1, buf1, n2 + n1, # buf - n2 + n1), m1 + n1 ≤ LEB_SIZE, n2 + n1 ≤ # buf, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪buf := buf1⟫ true, err0 = ESUCCESS
Proof step 13:
avol[m2] = mapped(buf1), m2 < # avol, ebm-vol-inv(avol), m1 + n1 ≤ LEB_SIZE, n2 + n1 ≤ # buf, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ err0 = ESUCCESS, ∃ buf1. # buf1 = # buf ∧ range=(buf, 0, buf1, 0, n2) ∧ range=(buf, n2 + n1, buf1, n2 + n1, # buf - n2 + n1)
Proof step 16:
avol[m2] = mapped(buf1), m2 < # avol, ebm-vol-inv(avol), m1 + n1 ≤ LEB_SIZE, n2 + n1 ≤ # buf, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ err0 = ESUCCESS, ∀ buf1. # buf1 = # buf → range=(buf, 0, buf1, 0, n2) → # buf ≥ n2 + n1

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

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Rule argument

Additional information