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Proof step 4 from proof add-assoc (previous step)

⊦ (∞ + ⌜m0⌝ ) + ⌜m⌝ = ∞ + ⌜m0⌝ + ⌜m⌝

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
⊦ ∞ = ∞ + ⌜m0⌝ + ⌜m⌝

Rule argument

Additional information

Used simplifier rules: add-inf1: ⊦ ∞ + ⌜m⌝ = ∞;