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Proof step 1 from proof int2bits-fillsgn (conclusion)

⊦ (boolvar ↔ i < 0) → mklist(boolvar, n) + int2bits(i) = fillsgn(n + # int2bits(i), int2bits(i))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
⊦ mklist(¬ 0 ≤ i, n) + int2bits(i) = fillsgn(n + # int2bits(i), int2bits(i))

Rule argument

Additional information

Used simplifier rules: ⊦ ¬ i < j ↔ j ≤ i;