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Proof step 56 from proof bitsor-sgn-in (previous step)

⊦ bits2 = [], # bits2 = 1, ¬ boolvar ↔ boolvar ∈ bitsor(bits2, false '), true ∈ bits2

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 57:
⊦ bits ≠ [] ∧ bits0 = false ' → bitsor(bits, bits0) = bits

Rule argument

name: or-rec-02 rotate: F subst: [bits0, bits] → [false ', bits2]

Additional information

Used simplifier rules: ⊦ ¬ true ∈ bits ∧ bits ≠ [] → (¬ false ∈ bits ↔ false); Used terms: false ', bits2