| bits0 = boolvar + bits1, boolvar ⊦ bits = [], bits0 = [], bitsor(bits, bits0) = bits0, true ∈ bits |
⊦ bits = [], bitsor(bits, true ' + bits1) = true ' + bits1, true ∈ bits
Used simplifier rules: ⊦ (bits + bits0) + bits1 = bits + bits0 + bits1;% ⊦ boolvar ' + bits ≠ [];% ⊦ boolvar + bits = boolvar ' + bits;