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Proof step 3 from proof mkDecimal-scale-not-neg (previous step)

⊦ mkDecimal(i, j).int = mkDecimal(i, abs(j)).int ∧ mkDecimal(i, j).scale = mkDecimal(i, abs(j)).scale

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 4:
⊦ ¬(i % 10 = 0 ∧ j ≠ 0 ∧ i ≠ 0) → mkDecimal(i, j).int = i
Proof step 5:
¬ ¬(i % 10 = 0 ∧ j ≠ 0 ∧ i ≠ 0) ⊦ mkDecimal(i, j).int = mkDecimal(i, abs(j)).int ∧ mkDecimal(i, j).scale = mkDecimal(i, abs(j)).scale
Proof step 17:
¬(i % 10 = 0 ∧ j ≠ 0 ∧ i ≠ 0) ⊦ i = mkDecimal(i, abs(j)).int ∧ mkDecimal(i, j).scale = mkDecimal(i, abs(j)).scale

Rule argument

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

Additional information

Used terms: j, i