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Proof step 6 from proof inv-change (previous step)

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

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, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪err := err0; if err = ESUCCESS then avol[m] := mapped(subarray(buf, 0, n))⟫ ebm-vol-inv(avol)
Proof step 11:
m < # avol, ebm-vol-inv(avol), is-aligned(n, EB_PAGE_SIZE), n ≤ LEB_SIZE, n ≤ # buf ⊦ ∃ err0. ⌊err0⌋ ∨ err0 = ESUCCESS

Proof step 6 from proof inv-change (previous step)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Rule argument

Additional information