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Proof step 4 from proof crash-neutral-erase (previous step)

m < # avols[v], ebm-cons(avols), ebm-cons(avols0), v ∈ avols, avols ⊆ avols0 ⊦ ⟨if v ∈ avols ∧ m < # avols[v] then {fail_or_success#(; ; err); if err = ESUCCESS then avols[v][m] := erased else {skip or avols[v][m] := unmapped}} else abort⟩ (avols ⊆ avols0)

Heuristic symbolic execution applied rule if positive right

And obtained the following new goals

Proof step 5:
m < # avols[v], ebm-cons(avols0), ebm-cons(avols), v ∈ avols, avols ⊆ avols0 ⊦ ⟨fail_or_success#(; ; err); if err = ESUCCESS then avols[v][m] := erased else {skip or avols[v][m] := unmapped}⟩ (avols ⊆ avols0)

Rule argument

pos: right 1

Proof step 4 from proof crash-neutral-erase (previous step)

Heuristic symbolic execution applied rule if positive right

And obtained the following new goals

Rule argument

Additional information