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Proof step 755 from proof bitsand-cast (previous step)

# bits1 ≤ #(bitsand(bits2, bits4) + bitsand(false ' + true ' + bits, bits1)), 2 + # bits = # bits1, # bits1 = # bitsand(bits1, false ' + true ' + bits) ⊦ bits4 + bits1 = [], bits4 = [], bits2 = [], bits1 = [], bitsand(bits1, false ' + true ' + bits) = lastn(# bits1, bitsand(bits2, bits4) + bitsand(false ' + true ' + bits, bits1))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 756:
2 + # bits = # bits1, # bits1 = # bitsand(bits1, false ' + true ' + bits), # bits1 ≤ # bitsand(bits2, bits4) + # bitsand(false ' + true ' + bits, bits1) ⊦ bits4 + bits1 = [], bits4 = [], bits2 = [], bits1 = [], bitsand(bits1, false ' + true ' + bits) = lastn(# bits1, bitsand(bits2, bits4) + bitsand(false ' + true ' + bits, bits1))

Rule argument

Additional information

Used simplifier rules: ⊦ (bits + bits0) + bits1 = bits + bits0 + bits1;% ⊦ #(bits + bits0) = # bits + # bits0;