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Proof step 3 from proof lf-elim-unmapped (previous step)

⊦ vols[v][m] = unmapped, ∃ n. vols[v][m] = ⌜n⌝

User applied rule structural induction

And closed the goal!

Rule argument

term: vols[v][m]

Additional information

Used simplifier rules: ebaentry freely generated by unmapped, ⌜ ⌝;;% ⊦ unmapped ≠ ⌜m⌝ ; (s)% ⊦ ⌜m⌝ = ⌜m0⌝ ↔ m = m0; (s)