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Proof step 4 from proof int2bytes-len-neg256 (previous step)

~256 ≤ i, i < ~128, i < 0 ⊦ # bits2bytes(int2bits(i)) = 2

User applied rule cut formula

And obtained the following new goals

Proof step 5:
# int2bits(i) = 9, ~256 ≤ i, i < ~128, i < 0 ⊦ # bits2bytes(int2bits(i)) = 2
Proof step 9:
~256 ≤ i, i < ~128, i < 0 ⊦ # int2bits(i) = 9, # bits2bytes(int2bits(i)) = 2

Rule argument

fma: # int2bits(i) = 9

Additional information

Used formulas: # int2bits(i) = 9