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Proof step 1 from proof succlessleninv-invsize (conclusion)

⊦ ⌜n⌝ + ⌜1⌝ < leninv(nσ) ∧ stutf(nσ) → (¬ # nσ ≠ ⌜inv(nσ)[n]⌝ + ⌜1⌝ ↔ false)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information