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Proof step 5 from proof int2bits-truetrue (previous step)

int2bits(j) = true ' + true ', j < 0 ⊦ j = 0

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 6:
⊦ i < 0 → int2bits(i) = sgn(bitsinvert(uint2bits(abs(i))) +1)
Proof step 7:
j < 0, sgn(bitsinvert(uint2bits(abs(j))) +1) = true ' + true ', j < 0 ⊦ j = 0

Rule argument

name: int2bits-neg rotate: F subst: [i] → [j]

Additional information

Used terms: j