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Proof step 606 from proof bitsand-cast (previous step)

# bitsand(bits1, false ' + true ' + bits) ≤ 2 + # bits + m ∧ bitsand(bits1, false ' + true ' + bits) ≠ [], sgn(mklist(false, m) + false ' + true ' + bits) = false ' + true ' + bits, 2 + # bits = # bits1 ⊦ bits3 + bits1 = [], bits3 = [], bits2 + mklist(false, m) = [], lastn (2 + # bits + m, mklist(bitsand(bits1, false ' + true ' + bits).first, 2 + # bits + m - # bitsand(bits1, false ' + true ' + bits)) + bitsand(bits1, false ' + true ' + bits)) = lastn(2 + # bits + m, fillsgn(2 + # bits + m, bitsand(bits2 + mklist(false, m), bits3) + bitsand(false ' + true ' + bits, bits1)))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 607:
2 + # bits = # bits1, sgn(mklist(false, m) + false ' + true ' + bits) = false ' + true ' + bits, # bitsand(bits1, false ' + true ' + bits) ≤ 2 + # bits + m ⊦ bitsand(bits1, false ' + true ' + bits) = [], lastn (2 + # bits + m, mklist(bitsand(bits1, false ' + true ' + bits).first, 2 + # bits + m - # bitsand(bits1, false ' + true ' + bits)) + bitsand(bits1, false ' + true ' + bits)) = lastn(2 + # bits + m, fillsgn(2 + # bits + m, bitsand(bits2 + mklist(false, m), bits3) + bitsand(false ' + true ' + bits, bits1))), bits2 + mklist(false, m) = [], bits3 = [], bits3 + bits1 = []

Proof step 606 from proof bitsand-cast (previous step)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

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