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Proof step 3 from proof crash-neutral-unmap (previous step)

m < # avols[v], ebm-cons(avols0), ebm-cons(avols), v ∈ avols, avols ⊆ avols0 ⊦ ⟨ebm_unmap#(v, m; avols)⟩ (avols ⊆ avols0)

Heuristic weak unfold applied rule call right

And obtained the following new goals

Proof step 4:
m < # avols[v], ebm-cons(avols), ebm-cons(avols0), v ∈ avols, avols ⊆ avols0 ⊦ ⟨if v ∈ avols ∧ m < # avols[v] then avols[v][m] := unmapped else abort⟩ (avols ⊆ avols0)

Rule argument

pos: right 1

Additional information

Used simplifier rules: unmap: ⊦ ;