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Proof step 8 from proof int2bits-rest (previous step)

j < 0, sgn(bitsinvert(uint2bits(abs(j))) +1).rest = [], j < 0 ⊦ j = ~1, j = 0

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 9:
sgn(bitsinvert(uint2bits(~ j)) +1).rest = [], j < 0 ⊦ j = ~1, j = 0

Rule argument

Additional information

Used simplifier rules: ⊦ i < 0 → abs(i) = ~ i;