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Proof step 7 from proof int2bytes-one (previous step)

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

User applied rule case distinction

And obtained the following new goals

Proof step 8:
# int2bytes(i) = 1 ⊦ ¬ i < ~128, ¬ i < 0 ∧ ¬ 127 < i, ¬ i < ~128 ∧ ¬ 128 ≤ i
Proof step 15:
# int2bytes(i) = 1 ⊦ ¬ 127 < i, ¬ i < 0 ∧ ¬ 127 < i, ¬ i < ~128 ∧ ¬ 128 ≤ i

Rule argument

pos: right 1

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