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Proof step 6 from proof dom-remove-refsize0-down (previous step)

⊦ n ∈ gstore ↓ ∧ gstore ↓[n].ref-size ≠ 0 ↔ n ∈ remove-refsize0(gstore)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 7:
⊦ n ∈ gstore ∧ gstore[n] ↓.ref-size ≠ 0 ↔ n ∈ remove-refsize0(gstore)

Rule argument

Additional information

Used simplifier rules: down-store-in: ⊦ n ∈ gstore ↓ ↔ n ∈ gstore;%down-store-at: ⊦ n ∈ gstore → gstore ↓[n] = gstore[n] ↓;