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Proof step 20 from proof mkDecimal-scale-not-neg (previous step)

¬(i % 10 = 0 ∧ abs(j) ≠ 0 ∧ i ≠ 0) ⊦ i % 10 = 0 ∧ j ≠ 0 ∧ i ≠ 0, i = i ∧ mkDecimal(i, j).scale = mkDecimal(i, abs(j)).scale

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 21:
⊦ mkDecimal(i, j).scale = mkDecimal(i, abs(j)).scale, i % 10 = 0, i = 0, j = 0

Rule argument

Additional information

Used simplifier rules: scale-zero: ⊦ mkDecimal(0, j).scale = 0;%abs-07: ⊦ abs(i) = 0 ↔ i = 0; from specification int-abs