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Proof step 9 from proof div-lezero (previous step)

0 < i / j, 0 < j, i < j, i < 0 ⊦

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 10:
i < j, 0 < j, 0 < i / j, i < 0 ⊦

Rule argument

Additional information

Used simplifier rules: forward-le-02: ⊦ j < i ∧ i ≤ 0 → j < 0; (forward) from specification int-abs