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Proof step 8 from proof inv-erase (previous step)

m < # avols[v], ebm-cons(avols), v ∈ avols, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪if err0 = ESUCCESS then avols[v][m] := erased else {skip or avols[v][m] := unmapped}⟫ ebm-cons(avols)

Heuristic conditional right split applied rule if right

And obtained the following new goals

Proof step 9:
err0 = ESUCCESS, m < # avols[v], ebm-cons(avols), v ∈ avols, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪avols[v][m] := erased⟫ ebm-cons(avols)
Proof step 10:
m < # avols[v], ebm-cons(avols), v ∈ avols, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪skip or avols[v][m] := unmapped⟫ ebm-cons(avols), err0 = ESUCCESS

Rule argument

pos: right 1

Proof step 8 from proof inv-erase (previous step)

Heuristic conditional right split applied rule if right

And obtained the following new goals

Rule argument

Additional information