| m < # avols[v], ebm-cons(avols0), ebm-cons(avols), v ∈ avols, avols ⊆ avols0, ¬ avols[v][m].mapped? ⊦ ⟨err := EIO; if err = ESUCCESS then avols[v][m] := mapped(emptyleb, 0)⟩ (avols ⊆ avols0) |
m < # avols[v], ebm-cons(avols), ebm-cons(avols0), v ∈ avols, avols ⊆ avols0 ⊦ ⟨if EIO = ESUCCESS then avols[v][m] := mapped(emptyleb, 0)⟩ (avols ⊆ avols0), avols[v][m].mapped?