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Proof step 961 from proof bitsand-cast (previous step)

0 < # bits1 ⊦ bits1 = [], bits2 + bits1 = [], bits0 = [], lastn(# bits1, mklist(false, # bits1)) = lastn(# bits1, fillsgn(# bits1, bitsand(bits2 + bits1, bits0))), true ∈ bits1

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 962:
⊦ bits1 = [], bits2 + bits1 = [], bits0 = [], lastn(# bits1, bits1) = lastn(# bits1, fillsgn(# bits1, bitsand(bits2 + bits1, bits0))), true ∈ bits1

Rule argument

Additional information

Used simplifier rules: ⊦ # bits = 0 ↔ bits = [];% ⊦ 0 < n ↔ n ≠ 0;% ⊦ ¬ true ∈ bits → mklist(false, # bits) = bits;