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Proof step 1 from proof bytes2int-fillsgn-zero (conclusion)

⊦ fillsgn(n, i2b(0) ') ≠ bytes ∧ bytes ≠ [] ∧ n = # bytes → bytes2int(bytes) ≠ 0

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
bytes2int(bytes) = 0 ⊦ bytes = [], fillsgn(# bytes, i2b(0) ') = bytes

Rule argument

Additional information