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Proof step 17 from proof shiftright-not-pos-01 (previous step)

i < 0 ⊦ mklist(true, i→n(j)) + int2bits(i) = [], j = 0, mklist(true, i→n(j)).first

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 18:
⊦ m ≠ 0 → (mklist(boolvar, m).first ↔ boolvar)

Rule argument

seq: ⊦ m ≠ 0 → (mklist(boolvar, m).first ↔ boolvar) subst: [m, boolvar] → [i→n(j), true] rotate: F spec: list-last inst: bitlista name: mk-first-01

Additional information

Used simplifier rules: ⊦ i→n(i) = 0 ↔ i = 0; Used terms: i→n(j), true