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Proof step 2 from proof bitsor-com (previous step)

true, ∀ bits, bits1. # bits1 < # bits0 → true → bits ≠ [] ∧ bits1 ≠ [] → bitsor(bits, bits1) = bitsor(bits1, bits) ⊦ bits ≠ [] ∧ bits0 ≠ [] → bitsor(bits, bits0) = bitsor(bits0, bits)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
∀ bits, bits1. # bits1 < # bits0 → true → bits ≠ [] ∧ bits1 ≠ [] → bitsor(bits, bits1) = bitsor(bits1, bits) ⊦ bits = [], bits0 = [], bitsor(bits, bits0) = bitsor(bits0, bits)

Proof step 2 from proof bitsor-com (previous step)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information