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Proof step 5 from proof sgn-ex (previous step)

∀ boolvar. ∃ n. boolvar ' + bits = mklist(boolvar, n) + sgn(boolvar ' + bits) ⊦ ∃ n. boolvar0 ' + (boolvar + bits) = mklist(boolvar0, n) + sgn(boolvar0 ' + (boolvar + bits))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information

Used simplifier rules: ⊦ boolvar + bits = boolvar ' + bits;