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Proof step 4 from proof at-truncate-lower (previous step)

key = datakey(m, m0), key.data?, m0 * VFS_PAGE_SIZE < size, key ∈ pcache ⊦ truncate(ino, size, pcache)[key] = pcache[key]

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
m0 * VFS_PAGE_SIZE < size, datakey(m, m0) ∈ pcache ⊦ truncate(ino, size, pcache)[datakey(m, m0)] = pcache[datakey(m, m0)]

Rule argument

Additional information

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