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Proof step 2 from proof sis-ls-same (previous step)

⊦ i < s2i(i2s(i)) ↔ ¬ ~32768 ≤ i

User applied rule cut formula

And obtained the following new goals

Proof step 3:
i < 0 ⊦ i < s2i(i2s(i)) ↔ ¬ ~32768 ≤ i
Proof step 11:
⊦ i < 0, i < s2i(i2s(i)) ↔ ¬ ~32768 ≤ i

Rule argument

fma: i < 0

Additional information

Used formulas: i < 0