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Proof step 20 from proof mult-eq-same (previous step)

0 ≤ abs(i0) ∧ 0 ≤ abs(i4), i * i3 * 10 ^ abs(i2) * 10 ^ abs(i4) = i1 * i3 * 10 ^ abs(i0) * 10 ^ abs(i4) ⊦ mkDecimal(i3, i4) = mkDecimal(0, 0), mkDecimal(i, i0) = mkDecimal(i1, i2)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information

Used simplifier rules: abs-03: ⊦ 0 ≤ abs(i); from specification int-abs