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Proof step 2 from proof sis-bitlength (previous step)

# int2bits(i) ≤ 16 ⊦ s2i(i2s(i)) = i

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ s2i(i2s(i)) = cast(16, i)
Proof step 4:
# int2bits(i) ≤ 16 ⊦ cast(16, i) = i

Rule argument

name: short-is-cast rotate: F subst: [i] → [i]

Additional information

Used terms: i