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Proof step 4 from proof lsleninv-1 (previous step)

⌜m0⌝ = leninv(nσ), n < nσ[m], ⌜m⌝ < # nσ, stutf(nσ) ⊦ ⌜n⌝ < leninv(nσ)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
⌜m0⌝ = leninv(nσ), n < nσ[m], ⌜m⌝ < # nσ, m0 < nσ[m], stutf(nσ), m0 ≤ n ⊦

Rule argument

Additional information

Used simplifier rules: fle-01: ⊦ m ≤ n ∧ n < n0 → m < n0; (forward) from specification nat% ⊦ m < n ↔ ¬ n ≤ m; (ss)% ⊦ ⌜m⌝ < ⌜n⌝ ↔ m < n; (s)