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Proof step 2 from proof encode-contract (previous step)

buf0 = buf, EB_PAGE_SIZE ≤ # buf ⊦ ⟪encode_pagesize#(EB_PAGE_SIZE, a; buf; err)⟫ ((err = ESUCCESS ∨ ⌊err⌋ ) ∧ # buf = # buf0 ∧ (err = ESUCCESS → is-encoded-pagesize(a, subarray(buf, 0, EB_PAGE_SIZE))))

Heuristic nonrecursive calls applied rule call right

And obtained the following new goals

Proof step 3:
⊦
Proof step 4:
buf0 = buf, n = EB_PAGE_SIZE, EB_PAGE_SIZE ≤ # buf ⊦ ⟪if ENCODED_ELEM_SIZE ≤ n then encode_nonempty#(a, 0; buf; err) else err := EINVAL⟫ ((err = ESUCCESS ∨ ⌊err⌋ ) ∧ # buf = # buf0 ∧ (err = ESUCCESS → is-encoded-pagesize(a, subarray(buf, 0, EB_PAGE_SIZE))))

Rule argument

pos: right 1

Additional information

Used simplifier rules: encode: ⊦ ;