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Proof step 9 from proof inv-change (previous step)

err0 = ESUCCESS, m < # avols[v], ebm-cons(avols), is-aligned(n, EB_PAGE_SIZE), v ∈ avols, n ≤ # buf, n ≤ LEB_SIZE, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪avols[v][m] := mapped(subarray(buf, 0, n) + mkempbuf(LEB_SIZE - n), n)⟫ ebm-cons(avols)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Proof step 10:
err0 = ESUCCESS, m < # avols[v], ebm-cons(avols), is-aligned(n, EB_PAGE_SIZE), v ∈ avols, 0 + n ≤ # buf, n ≤ LEB_SIZE, n ≤ # buf, LEB_SIZE ≥ n, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ebm-cons(avols[v, avols[v][m, mapped(subarray(buf, 0, n) + mkempbuf(LEB_SIZE - n), n)]])

Rule argument

Additional information

Used simplifier rules: ⊦ ¬ ⌊ESUCCESS⌋ ; (s)% ⊦ n + 0 = n; (s)%a: ⊦ (m + n0) + n1 = m + n0 + n1; from specification nat-basic%c: ⊦ m + n = n + m; from specification nat-basic% ⊦ n ≥ m ↔ m ≤ n; (s)