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Proof step 658 from proof fsync-pages-keep-abs (previous step)

# buf = VFS_PAGE_SIZE, pcache[datakey(m, n)] = mkpentry(true, buf), err = err0, (files ⊕ pcache) ⊕ icache = (files1 ⊕ pcache0) ⊕ icache, n * VFS_PAGE_SIZE < m2, pcache-cons(pcache0, dirs, files1), datakey(m, n) ∈ pcache, m ∈ files, ⌊err0⌋ ⊦ [n := n + 1] ((files1 ⊕ pcache0) ⊕ icache = (files ⊕ pcache) ⊕ icache)

Heuristic symbolic execution applied rule assign right

And closed the goal!

Rule argument

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