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Proof step 4 from proof div2one-01 (previous step)

2 ≠ 0, i - i / 2 * 2 = 1 ⊦ (1 + i / 2) * 2 = i + 1

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
i = 1 + i / 2 * 2 ⊦ (1 + i / 2) * 2 = i + 1

Rule argument

Additional information

Used simplifier rules: sub-eq: ⊦ i - j = i0 ↔ i = i0 + j; from specification int-abs