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Proof step 7 from proof sgn-last-diff (previous step)

⊦ ¬ (¬ boolvar) ∈ bits0, sgn(boolvar0 ' + boolvar ') = sgn(boolvar0 ' + bits0) + boolvar ', (¬ boolvar0) ∈ bits0

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information