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Proof step 13 from proof sgn-length-02 (previous step)

¬(bits0 ≠ [] ∧ (bits0.first ↔ boolvar)), # sgn(bits0) < 2 + # bits0, 3 + # bits0 ≤ # sgn(boolvar ' + bits0) ⊦ bits0 = []

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information