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Proof step 6 from proof abs-neg (previous step)

mkDecimal(i, i0) < mkDecimal(0, 0) ⊦ mkDecimal(abs(i), i0) = ~ mkDecimal(i, i0)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information

Used simplifier rules: ls-zero-01: ⊦ mkDecimal(i, i0) < mkDecimal(0, 0) ↔ i < 0;%forward-le-02: ⊦ j < i ∧ i ≤ 0 → j < 0; (forward) from specification int-abs%abs-08: ⊦ i < 0 → abs(i) = ~ i; from specification int-abs