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Proof step 4 from proof mult-ls-01 (previous step)

0 < j, i0 < i / j, i < 0, i ≤ i0 * j ⊦

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
i0 < i / j, 0 < j, i < 0, i ≤ i0 * j ⊦

Rule argument

Additional information

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