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Proof step 273 from proof bitsand-cast (previous step)

n = # fillsgn(n, bits), true ∈ bits, # bits < n ⊦ bits = [], bits0 = [], lastn(n, fillsgn(n, bits0)) = lastn(n, fillsgn(n, bitsand(bits, bits0))), mklist(¬ false, # bits) ≠ bits

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 274:
n = # fillsgn(n, bits), mklist(true, # bits) = bits, true ∈ bits, # bits < n ⊦ bits = [], bits0 = [], lastn(n, fillsgn(n, bits0)) = lastn(n, fillsgn(n, bitsand(bits, bits0)))

Proof step 273 from proof bitsand-cast (previous step)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information