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Proof step 8 from proof decode-contract (previous step)

n + ENCODED_ELEM_SIZE ≤ # buf ⊦ ⟪decode#(n, buf; a, m; err)⟫ ((err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err = ESUCCESS → is-encoded-nonempty(a, subarray(buf, n, ENCODED_ELEM_SIZE)))), isempty(buf, n, ENCODED_ELEM_SIZE)

User applied rule insert program lemma

And obtained the following new goals

Rule argument

spec: encoding name: decode-contract seq: ⊦ ⟪decode#(n, buf; a, n0; err)⟫ ( (err = ESUCCESS ∨ ⌊err⌋ ) ∧ ( err = ESUCCESS → is-encoded(a, subarray(buf, n, n0)) ∧ n + n0 ≤ # buf ∧ n0 = encoding-size(a))) subst: [buf, n, n0, a, err] → [buf, n, m, a, err] flags: <all paths>

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