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Proof step 2 from proof inv-ls-succ (previous step)

⌜n⌝ + ⌜1⌝ < leninv(nσ), stutf(nσ) ⊦ inv(nσ)[n] < inv(nσ)[n + 1]

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
⌜n⌝ + ⌜1⌝ < leninv(nσ), stutf(nσ), inv(nσ)[n + 1] ≤ inv(nσ)[n] ⊦

Rule argument

Additional information

Used simplifier rules: ⊦ m < n ↔ ¬ n ≤ m; (ss)