| m < # avols[v], ebm-cons(avols), ebm-cons(avols0), v ∈ avols, avols ⊆ avols0 ⊦ ⟨avols[v][m] := unmapped⟩ (avols ⊆ avols0), ⟨skip⟩ (avols ⊆ avols0) |
m < # avols[v], ebm-cons(avols0), ebm-cons(avols), v ∈ avols, avols ⊆ avols0 ⊦ ⟨skip⟩ (avols ⊆ avols0), avols[v, avols[v][m, unmapped]] ⊆ avols0