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Proof step 9 from proof square-le-04 (previous step)

i + i * i ≤ j + j * j, 0 ≤ i, 0 ≤ j ⊦ ¬ j < i

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 10:
j < i, i + i * i ≤ j + j * j, 0 ≤ i, 0 ≤ j, 0 < i ⊦

Rule argument

Additional information

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