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Proof step 2 from proof and-notone-01 (previous step)

bitsand(bits, false ' + bits0) = true ' + bits1 ⊦ bits = []

User applied rule induction

And obtained the following new goals

Proof step 3:
bitsand(bits, false ' + bits0) = true ' + bits1, ∀ bits2, bits0, bits1. # bits2 < # bits → bitsand(bits2, false ' + bits0) = true ' + bits1 → bits2 = [] ⊦ bits = []

Rule argument

indvar: # bits wfpred: <

Additional information

Used simplifier rules: <; (wellfounded) Used terms: # bits