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Proof step 87 from proof refine-read (previous step)

# buf1 = # buf2, # buf2 = n4 + n3 + n2, avols[default-volid][m2] = mapped(buf, n1), err = err1, m2 < # avols[default-volid], ebm-cons(avols), ebm-vol-inv(abs(avols[default-volid])), range=(buf1, n3 + n2, buf2, n3 + n2, n4), range=(buf1, 0, buf2, 0, n3), default-volid ∈ avols, n3 + n2 ≤ # buf2, m1 + n2 ≤ LEB_SIZE, ⌊err1⌋ ⊦ ⟨choose buf with # buf = # buf2 ∧ range=(buf2, 0, buf, 0, n3) ∧ range=(buf2, n3 + n2, buf, n3 + n2, # buf2 - n3 + n2) in buf2 := buf⟩ (buf1 = buf2 ∧ err1 = err)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Proof step 88:
# buf2 = n4 + n3 + n2, # buf1 = # buf2, avols[default-volid][m2] = mapped(buf0, n1), err = err1, m2 < # avols[default-volid], ebm-cons(avols), ebm-vol-inv(abs(avols[default-volid])), range=(buf1, 0, buf2, 0, n3), range=(buf1, n3 + n2, buf2, n3 + n2, n4), default-volid ∈ avols, m1 + n2 ≤ LEB_SIZE, n3 + n2 ≤ # buf2, ⌊err1⌋ ⊦ ∃ buf. (# buf = # buf2 → range=(buf2, 0, buf, 0, n3) → # buf2 ≥ n3 + n2) ∧ (# buf = # buf2 ∧ range=(buf2, 0, buf, 0, n3) ∧ range=(buf2, n3 + n2, buf, n3 + n2, # buf2 - n3 + n2)) ∧ ⟨buf2 := buf⟩ (buf1 = buf2 ∧ err1 = err)

Proof step 87 from proof refine-read (previous step)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Rule argument

Additional information