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Proof step 3 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 4:
⌜m0⌝ = leninv(nσ), stutf(nσ), ⌜m⌝ < # nσ, n < nσ[m], m0 ≤ n, m0 < nσ[m] ⊦

Rule argument

Additional information

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