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Proof step 3 from proof int2bytes-one (previous step)

¬(0 ≤ i ∧ i ≤ 127) ⊦ # int2bytes(i) = 1 → ~128 ≤ i ∧ i ≤ 127

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 4:
# int2bytes(i) = 1 ⊦ ¬ i < ~128 ∧ ¬ 127 < i, ¬ i < 0 ∧ ¬ 127 < i

Rule argument

Additional information

Used simplifier rules: ⊦ ¬ i ≤ j ↔ j < i;