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Proof step 910 from proof bitsand-cast (previous step)

¬(# bits1 = # bits ∧ bits2 ≠ [] ∧ bits3 ≠ [] ∧ bits1 ≠ []), mklist(true, # bits1) = bits1, # bits = # bits1 ⊦ bits = lastn(# bits1, fillsgn(# bits1, bitsand(bits2 + bits1, bits3 + bits))), bits3 + bits = [], bits2 + bits1 = [], bits1 = []

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 911:
mklist(true, # bits1) = bits1, # bits = # bits1 ⊦ bits = lastn(# bits1, fillsgn(# bits1, bitsand(bits2 + bits1, bits3 + bits))), bits3 + bits = [], bits2 + bits1 = [], bits1 = [], bits2 ≠ [] ∧ bits3 ≠ []

Proof step 910 from proof bitsand-cast (previous step)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information