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Proof step 3 from proof crash-neutral-get-volume-size (previous step)

ebm-cons(avols), ebm-cons(avols0), v ∈ avols, avols ⊆ avols0 ⊦ ⟨ebm_get_volume_size#(v, avols; ; n)⟩ true

Heuristic weak unfold applied rule call right

And obtained the following new goals

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

Rule argument

pos: right 1

Additional information

Used simplifier rules: get-volume-size: ⊦ ;