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Proof step 1 from proof add-div-mult (conclusion)

⊦ 0 ≤ i ∧ 0 ≤ i0 ∧ 0 < j → (i / j + i0 / j) + (i % j + i0 % j) / j = (i + i0) / j

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
0 ≤ i, 0 ≤ i0, 0 < j ⊦ (i / j + i0 / j) + (i % j + i0 % j) / j = (i + i0) / j

Rule argument

Additional information

Used simplifier rules: forward-le-01: ⊦ i ≤ j ∧ 0 ≤ i → 0 ≤ j; (forward) from specification int-abs%forward-le-05: ⊦ i < j ∧ 0 ≤ i → 0 < j; (forward) from specification int-abs