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Proof step 1 from proof crash-neutral-map (conclusion)

v ∈ avols, m < # avols[v], ¬ avols[v][m].mapped?, ebm-cons(avols), avols ⊆ avols0, ebm-cons(avols) → ebm-cons(avols0) ⊦ ⟨ebm_map#(v, m; avols; err)⟩ (avols ⊆ avols0 ∧ (ebm-cons(avols) → ebm-cons(avols0)))

System applied rule normalize

And obtained the following new goals

Proof step 2:
m < # avols[v], ebm-cons(avols), v ∈ avols, avols ⊆ avols0, ebm-cons(avols) → ebm-cons(avols0) ⊦ ⟨ebm_map#(v, m; avols; err)⟩ (avols ⊆ avols0 ∧ (ebm-cons(avols) → ebm-cons(avols0))), avols[v][m].mapped?

Proof step 1 from proof crash-neutral-map (conclusion)

System applied rule normalize

And obtained the following new goals

Rule argument

Additional information