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Proof step 6 from proof crash-neutral-change (previous step)

m < # avol, ebm-vol-inv(avol), is-aligned(n, EB_PAGE_SIZE), n ≤ # buf, n ≤ LEB_SIZE, avol ⊆ avol0 ⊦ ⟨choose err0 with ⌊err0⌋ ∨ err0 = ESUCCESS in err := err0; if err = ESUCCESS then avol[m] := mapped(subarray(buf, 0, n))⟩ (avol ⊆ avol0)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Proof step 7:
m < # avol, ebm-vol-inv(avol), is-aligned(n, EB_PAGE_SIZE), n ≤ LEB_SIZE, n ≤ # buf, avol ⊆ avol0 ⊦ ∃ err0. (⌊err0⌋ ∨ err0 = ESUCCESS) ∧ ⟨err := err0; if err = ESUCCESS then avol[m] := mapped(subarray(buf, 0, n))⟩ (avol ⊆ avol0)

Proof step 6 from proof crash-neutral-change (previous step)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Rule argument

Additional information