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Proof step 4 from proof test-truncate-01 (previous step)

mkDecimal(314159265358979323844, 20).scale ≤ 2 ⊦ truncate(mkDecimal(314159265358979323844, 20), 2) = mkDecimal(314, 2)

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: inst: name: scale-base seq: ⊦ ¬(i % 10 = 0 ∧ j ≠ 0 ∧ i ≠ 0) → mkDecimal(i, j).scale = abs(j) subst: [j, i] → [20, 314159265358979323844] flags: rewrite, current

Additional information

Used terms: 20, 314159265358979323844