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Proof step 4 from proof pot-zero-01 (previous step)

¬ j < 0, 0 < i ⊦ i ^ j = 0 ↔ j < 0 ∧ 1 < i

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
i ^ j = 0, 0 < i, 0 ≤ j ⊦

Rule argument

Additional information

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