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Proof step 27 from proof refine-writepage (previous step)

# buf = VFS_PAGE_SIZE, cache_files[m] = mkfile(m3, md0, # links(m, cache_dirs), content), afs_files = (cache_files ⊕ cache_pcache) ⊕ cache_icache, dirs = cache_dirs, err = err0, files = afs_files, inode = mkinode(m, md, boolvar, m0, m1, m2), afs-cons(cache_dirs, cache_files), afs-cons(cache_dirs, (cache_files ⊕ cache_pcache) ⊕ cache_icache), dcache-cons(cache_dcache, cache_dirs, cache_files), icache-cons(cache_icache, cache_dirs, cache_files), pcache-cons(cache_pcache, cache_dirs, cache_files), synced(cache_dirs, cache_icache, cache_pcache), synced(cache_files, cache_icache, cache_pcache), m ∈ cache_files ⊦ ⟨{files[inode.ino].content[pageno] := buf; err := ESUCCESS} or fail#(; ; err); asynced := ?⟩ ( files = ( cache_files[m, mkfile(m3, md0, # links(m, cache_dirs), content[pageno, buf])] ⊕ cache_pcache[datakey(m, pageno), mkpentry(false, buf)]) ⊕ cache_icache ∧ ¬ asynced ∧ ESUCCESS = err)

Heuristic symbolic execution applied rule or right

And obtained the following new goals

Rule argument

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