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Proof step 1 from proof bits2int-is-cast (conclusion)

⊦ n < # int2bits(i) → bits2int(lastn(n, int2bits(i))) = cast(n→i(n), i)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
n < # int2bits(i) ⊦ bits2int(lastn(n, int2bits(i))) = cast(n→i(n), i)

Rule argument

Additional information

Used simplifier rules: ⊦ int2bits(j) ≠ [];% ⊦ # bits = 0 ↔ bits = [];% ⊦ m < n → n ≠ 0; (forward)