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Proof step 3 from proof decode-contract (previous step)

n = EB_PAGE_SIZE, EB_PAGE_SIZE ≤ # buf ⊦ ⟪if ENCODED_ELEM_SIZE ≤ n then decode_nonempty#(0, buf; a; err) else err := EINVAL⟫ ((err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err = ESUCCESS → is-encoded-pagesize(a, subarray(buf, 0, EB_PAGE_SIZE))))

Heuristic conditional right split applied rule if right

And obtained the following new goals

Proof step 4:
n = EB_PAGE_SIZE, ENCODED_ELEM_SIZE ≤ n, EB_PAGE_SIZE ≤ # buf ⊦ ⟪decode_nonempty#(0, buf; a; err)⟫ ((err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err = ESUCCESS → is-encoded-pagesize(a, subarray(buf, 0, EB_PAGE_SIZE))))
Proof step 26:
n = EB_PAGE_SIZE, EB_PAGE_SIZE ≤ # buf ⊦ ⟪err := EINVAL⟫ ((err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err = ESUCCESS → is-encoded-pagesize(a, subarray(buf, 0, EB_PAGE_SIZE)))), ENCODED_ELEM_SIZE ≤ n

Rule argument

pos: right 1

Proof step 3 from proof decode-contract (previous step)

Heuristic conditional right split applied rule if right

And obtained the following new goals

Rule argument

Additional information