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Proof step 13 from proof inv-format (previous step)

avols = ∅, n = m, v = default-volid ⊦ ⟪if ¬ v ∈ avols then {fail_or_success#(; ; err); if err = ESUCCESS then avols[v] := fill(mkabstractvolume(n), erased)} else abort⟫ (err = ESUCCESS → default-volid ∈ avols ∧ ebm-cons(avols))

Heuristic symbolic execution applied rule if positive right

And obtained the following new goals

Proof step 14:
avols = ∅, n = m, v = default-volid ⊦ ⟪fail_or_success#(; ; err); if err = ESUCCESS then avols[v] := fill(mkabstractvolume(n), erased)⟫ (err = ESUCCESS → default-volid ∈ avols ∧ ebm-cons(avols))

Rule argument

Additional information

Used simplifier rules: ⊦ ¬ v ∈ ∅; (s)