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Proof step 18 from proof del-merge-dels (previous step)

datakey(m, m0) ∈ ri, key ∈ ks ⊦ # ks = 0, ((ri ⊖ key) ⊖ ks)[datakey(m, m0)] = ri[datakey(m, m0)], ks = ∅, inodekey(m) ∈ ks, datakey(m, m0) ∈ ks, datakey(m, m0) ∈ ri ⊖ key ∧ ¬ datakey(m, m0) ∈ ks ∧ ¬ inodekey(m) ∈ ks

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

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