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Proof step 2 from proof mods-ls-04 (previous step)

j0 < j, 0 ≤ i, 0 ≤ i0, 0 ≤ j0 ⊦ i * j + j0 < i0 * j ↔ i < i0

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
j0 < j, 0 < j, 0 ≤ j0, 0 ≤ i0, 0 ≤ i ⊦ i * j + j0 < i0 * j ↔ i < i0

Rule argument

Additional information

Used simplifier rules: forward-lels: ⊦ i ≤ j ∧ j < j0 → i < j0; (forward) from specification int-abs