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Proof step 3 from proof replay-safe-drop (previous step)

⊦ replay-safe(log, fs -- adr, ri) ↔ replay-safe(log, fs, ri), adr ∈ log

Heuristic structural induction applied rule structural induction

And obtained the following new goals

Proof step 4:
∀ fs, adr, ri. (replay-safe(log0, fs -- adr, ri) ↔ replay-safe(log0, fs, ri)) ∨ adr ∈ log0 ⊦ replay-safe(adr0 + log0, fs -- adr, ri) ↔ replay-safe(adr0 + log0, fs, ri), adr ∈ adr0 + log0

Rule argument

term: log

Additional information

Used simplifier rules: replay-safe-empty: ⊦ replay-safe([], fs, fi);%address-list freely generated by [], +;;