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Proof step 2 from proof not-mtwo (previous step)

i + j = ~2 ⊦ j < 0, i < 0

User applied rule cut formula

And obtained the following new goals

Proof step 3:
i + j < 0, i + j = ~2 ⊦ j < 0, i < 0

Rule argument

fma: i + j < 0

Additional information

Used formulas: i + j < 0