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Proof step 8 from proof datalkeys-drop-orphans (previous step)

key0 = datakey(m, m0), key0.data?, ro.inodes?, n ≤ m0 * VFS_PAGE_SIZE ⊦ key0 ∈ ri ⊖ ro ↔ key0 ∈ ri, inodekey(m) ∈ ro

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 9:
ro.inodes?, n ≤ m0 * VFS_PAGE_SIZE ⊦ datakey(m, m0) ∈ ri ⊖ ro ↔ datakey(m, m0) ∈ ri, inodekey(m) ∈ ro

Rule argument

Additional information

Used simplifier rules: ⊦ datakey(m, m0).data?; (s)