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Proof step 2 from proof lsleninv-1 (previous step)

⌜m⌝ < # nσ, n < nσ[m], stutf(nσ) ⊦ ⌜n⌝ < leninv(nσ) ↔ true

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
⌜m⌝ < # nσ, n < nσ[m], stutf(nσ) ⊦ ⌜n⌝ < leninv(nσ)

Rule argument

Additional information

Used simplifier rules: ⊦ m < n → n ≠ 0; (s)%f: ⊦ m < n → n ≠ 0; (forward) from specification nat-basic