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Proof step 1 from proof band-65535-neg (conclusion)

⊦ bytes2int(bytes) < 0 ∧ # bytes ≤ 2 ∧ bytes ≠ [] → band(bytes2int(bytes), 65535) = (bytes2int(bytes) + 1) + 65535

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
# bytes ≤ 2, bytes2int(bytes) < 0 ⊦ bytes = [], band(bytes2int(bytes), 65535) = 65536 + bytes2int(bytes)

Rule argument

Additional information

Used simplifier rules: ⊦ j < i ∧ i ≤ 0 → j < 0; (forward)