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Proof step 7 from proof cast-one (previous step)

1 ≤ # int2bits(j) ⊦ bits2int(int2bits(j).last ') = 0, bits2int(int2bits(j).last ') = ~1

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 8:
⊦ (boolvar ↔ false) → bits2int(boolvar ') = 0

Rule argument

seq: ⊦ (boolvar ↔ false) → bits2int(boolvar ') = 0 subst: [boolvar] → [int2bits(j).last] rotate: F spec: int2bits inst: name: bits2int-zero-03

Additional information

Used simplifier rules: ⊦ bits2int(true ') = ~1; Used terms: int2bits(j).last