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Proof step 913 from proof bitsand-cast (previous step)

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

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 914:
⊦ bits ≠ [] ∧ bits0 ≠ [] → bitsand(bits, bits0) = bitsand(bits0, bits)
Proof step 915:
bits1 ≠ [] ∧ bits3 + bits ≠ [], mklist(true, # bits1) = bits1, # bits = # bits1 ⊦ bits = lastn(# bits1, fillsgn(# bits1, bitsand(bits3 + bits, bits1))), bits3 + bits = [], bits1 = []

Rule argument

name: and-com rotate: F subst: [bits0, bits] → [bits3 + bits, bits1]

Additional information

Used terms: bits3 + bits, bits1