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Proof step 535 from proof bitsand-cast (previous step)

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

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 536:
sgn(mklist(true, # bits0) + true ' + false ' + bits) = true ' + false ' + bits, # bits1 = 2 + # bits, mklist(true, # bits0).first ⊦ bits0 = [], bits4 = [], bits2 = [], (bits4 + bits0) + bits1 = [], bits1 = [], lastn(2 + # bits + # bits0, fillsgn(2 + # bits + # bits0, (bits4 + bits0) + bitsand(bits1, true ' + false ' + bits))) = lastn(2 + # bits + # bits0, (bitsand(bits2, bits4) + bitsand(bits0, mklist(true, # bits0))) + bitsand(bits1, true ' + false ' + bits)), bits2 + mklist(true, # bits0) = [], bits4 + bits0 = []

Rule argument

Additional information

Used simplifier rules: ⊦ m ≤ m + n;% ⊦ m + n ≤ m + n0 ↔ n ≤ n0;% ⊦ m ≤ m;% ⊦ # mklist(boolvar, n) = n;% ⊦ # bits = 0 ↔ bits = [];% ⊦ mklist(boolvar, m) = [] ↔ m = 0;% ⊦ m + n = n + m;% ⊦ (m + n0) + n1 = m + n0 + n1;