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Proof step 12 from proof decode-contract (previous step)

err = ESUCCESS, n0 = align↑(n1, ENCODED_ELEM_ALIGNMENT), n + n0 ≤ # buf, err = ESUCCESS → is-encoded(a, subarray(buf, n, encoding-size(a))) ∧ n + encoding-size(a) ≤ # buf ∧ n1 = encoding-size(a), err = ESUCCESS ∨ ⌊err⌋ ⊦ ⟪skip⟫ ( (err = ESUCCESS ∨ ⌊err⌋ ) ∧ ( err = ESUCCESS → is-encoded-aligned(a, subarray(buf, n, size-aligned(a, ENCODED_ELEM_ALIGNMENT))) ∧ n + size-aligned(a, ENCODED_ELEM_ALIGNMENT) ≤ # buf ∧ n0 = size-aligned(a, ENCODED_ELEM_ALIGNMENT)))

Heuristic symbolic execution applied rule skip right

And obtained the following new goals

Proof step 13:
err = ESUCCESS, n0 = align↑(n1, ENCODED_ELEM_ALIGNMENT), n + n0 ≤ # buf, err = ESUCCESS → is-encoded(a, subarray(buf, n, encoding-size(a))) ∧ n + encoding-size(a) ≤ # buf ∧ n1 = encoding-size(a), err = ESUCCESS ∨ ⌊err⌋ ⊦ (err = ESUCCESS ∨ ⌊err⌋ ) ∧ ( err = ESUCCESS → is-encoded-aligned(a, subarray(buf, n, size-aligned(a, ENCODED_ELEM_ALIGNMENT))) ∧ n + size-aligned(a, ENCODED_ELEM_ALIGNMENT) ≤ # buf ∧ n0 = size-aligned(a, ENCODED_ELEM_ALIGNMENT))

Proof step 12 from proof decode-contract (previous step)

Heuristic symbolic execution applied rule skip right

And obtained the following new goals

Rule argument

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