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Proof step 4 from proof test-sqrt-02 (previous step)

⊦ sqrt(mkDecimal(2, 0), 2) = mkDecimal(141, 2), even(mkDecimal(2, 0).scale)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 5:
⊦ ¬(i % 10 = 0 ∧ j ≠ 0 ∧ i ≠ 0) → mkDecimal(i, j).scale = abs(j)

Rule argument

spec: decimal inst: name: scale-base seq: ⊦ ¬(i % 10 = 0 ∧ j ≠ 0 ∧ i ≠ 0) → mkDecimal(i, j).scale = abs(j) subst: [j, i] → [0, 2] flags: rewrite

Additional information

Used simplifier rules: even-zero: ⊦ even(0); from specification int-min Used terms: 0, 2