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Proof step 2 from proof int2bytes-not-neg (previous step)

b2i(int2bytes(i).first) < 0, 0 ≤ i ⊦

User applied rule induction

And obtained the following new goals

Proof step 3:
b2i(int2bytes(i).first) < 0 ∧ 0 ≤ i, ∀ i0. i→n(i0) < i→n(i) → b2i(int2bytes(i0).first) < 0 ∧ 0 ≤ i0 → false ⊦ false

Rule argument

indvar: i→n(i) wfpred: <

Additional information

Used simplifier rules: <; (wellfounded) Used terms: i→n(i)