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Proof step 731 from proof bitsand-cast (previous step)

bits2 = [], # bits1 = # bitsand(bits1, false ' + true ' + bits), 2 + # bits = # bits1, sgn(mklist(false, # bits0) + false ' + true ' + bits) = false ' + true ' + bits ⊦ mklist(false, # bits0) + bitsand(bits1, false ' + true ' + bits) = lastn (2 + # bits + # bits0, fillsgn(2 + # bits + # bits0, bitsand(bits2 + mklist(false, # bits0), bits4 + bits0) + bitsand(false ' + true ' + bits, bits1))), bits1 = [], bits2 + mklist(false, # bits0) = [], bits4 + bits0 = [], (bits4 + bits0) + bits1 = [], bits4 = [], bits2 ≠ [] ∧ bits0 ≠ []

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 732:
# bits1 = # bitsand(bits1, false ' + true ' + bits), 2 + # bits = # bits1, sgn(mklist(false, # bits0) + false ' + true ' + bits) = false ' + true ' + bits ⊦ bits4 + bits0 = [], (bits4 + bits0) + bits1 = [], bits4 = [], mklist(false, # bits0) + bitsand(bits1, false ' + true ' + bits) = lastn (2 + # bits + # bits0, fillsgn(2 + # bits + # bits0, bitsand(mklist(false, # bits0), bits4 + bits0) + bitsand(false ' + true ' + bits, bits1))), bits1 = [], bits0 = []

Rule argument

Additional information

Used simplifier rules: ⊦ # bits = 0 ↔ bits = [];% ⊦ mklist(boolvar, m) = [] ↔ m = 0;% ⊦ (bits + bits0) + bits1 = bits + bits0 + bits1;% ⊦ [] + bits = bits;