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Proof step 122 from proof refine-unlink (previous step)

# links(entries[str], cache_dirs) = m0 + 1, # links(m3, cache_dirs) = cache_dirs[m3].nlink, m9 + 1 = cache_dirs[m3].size, cache_files[entries[str]] = mkfile(m2, md3, m0 + 1, content), ((cache_files ⊕ cache_pcache) ⊕ cache_icache)[entries[str]] = mkfile(m7, md2, m0 + 1, content0), cache_dirs[m3] = mkdir(m9 + 1, md4, cache_dirs[m3].nlink, cache_dirs[m3].nsubdirs, entries), entries[str] = cache_dirs[m3].entries[str], p_ino = m3, afs-cons (cache_dirs[m3, mkdir(m9, md1, cache_dirs[m3].nlink, cache_dirs[m3].nsubdirs, entries -- str)], cache_files[entries[str], mkfile(m6, md0, m0, content)]), afs-cons(cache_dirs, (cache_files ⊕ cache_pcache) ⊕ cache_icache), afs-cons(cache_dirs, cache_files), dcache-cons (cache_dcache -- dentrykey(m3, str), cache_dirs[m3, mkdir(m9, md1, cache_dirs[m3].nlink, cache_dirs[m3].nsubdirs, entries -- str)], cache_files[entries[str], mkfile(m6, md0, m0, content)]), dcache-cons(cache_dcache, cache_dirs, cache_files), icache-cons (cache_icache[entries[str], mkientry(false, mkinode(entries[str], md0, false, m0, 0, m6))] [m3, mkientry(false, mkinode(m3, md1, true, cache_dirs[m3].nlink, cache_dirs[m3].nsubdirs, m9)) ], cache_dirs[m3, mkdir(m9, md1, cache_dirs[m3].nlink, cache_dirs[m3].nsubdirs, entries -- str)], cache_files[entries[str], mkfile(m6, md0, m0, content)]), icache-cons(cache_icache, cache_dirs, cache_files), pcache-cons (cache_pcache, cache_dirs[m3, mkdir(m9, md1, cache_dirs[m3].nlink, cache_dirs[m3].nsubdirs, entries -- str)], cache_files[entries[str], mkfile(m6, md0, m0, content)]), pcache-cons(cache_pcache, cache_dirs, cache_files), synced (cache_dirs[m3, mkdir(m9, md1, cache_dirs[m3].nlink, cache_dirs[m3].nsubdirs, entries -- str)], cache_icache[entries[str], mkientry(false, mkinode(entries[str], md0, false, m0, 0, m6))] [m3, mkientry(false, mkinode(m3, md1, true, cache_dirs[m3].nlink, cache_dirs[m3].nsubdirs, m9)) ], cache_pcache), synced(cache_dirs, cache_icache, cache_pcache), str ∈ entries, entries[str] ∈ cache_files, m3 ∈ cache_dirs, str ∈ cache_dirs[m3].entries, cache_sync → synced (cache_files[entries[str], mkfile(m6, md0, m0, content)], cache_icache[entries[str], mkientry(false, mkinode(entries[str], md0, false, m0, 0, m6))] [m3, mkientry(false, mkinode(m3, md1, true, cache_dirs[m3].nlink, cache_dirs[m3].nsubdirs, m9)) ], cache_pcache), cache_sync → synced(cache_files, cache_icache, cache_pcache), links(m3, cache_dirs) ≠ ∅ ∨ m3 = ROOT_INO ⊦ ⟨dirs := cache_dirs[p_ino, cache_dirs[p_ino].entries:= (cache_dirs[p_ino].entries -- mkdentry(str, entries[str]).name)]; dirs[p_ino].size := dirs[p_ino].size - 1; let ino = mkdentry(str, entries[str]).ino in {afs_files := (cache_files ⊕ cache_pcache) ⊕ cache_icache; afs_drop_nlink#(ino; dirs, afs_files)}; dent := negdentry(mkdentry(str, entries[str]).name); afs_inode_sync#(mkinode(m3, md1, true, # links(m3, cache_dirs), cache_dirs[m3].nsubdirs, m9 + 1); dirs, afs_files); afs_inode_sync#(mkinode(entries[str], md0, false, m0 + 1, 0, m6); dirs, afs_files); p_inode := (m3 ∈ dirs ⊃ mkinode(m3, dirs[m3].meta, true, dirs[m3].nlink, dirs[m3].nsubdirs, dirs[m3].size) ;mkinode(m3, afs_files[m3].meta, false, afs_files[m3].nlink, 0, afs_files[m3].size) ); c_inode := getinode(entries[str], dirs, afs_files); err := ESUCCESS; asynced := ?⟩ ( dirs = cache_dirs[m3, mkdir(m9, md1, # links(m3, cache_dirs), cache_dirs[m3].nsubdirs, entries -- str)] ∧ afs_files = (cache_files[entries[str], mkfile(m6, md0, m0, content)] ⊕ cache_pcache) ⊕ cache_icache[entries[str], mkientry(false, mkinode(entries[str], md0, false, m0, 0, m6))] [m3, mkientry(false, mkinode(m3, md1, true, # links(m3, cache_dirs), cache_dirs[m3].nsubdirs, m9)) ] ∧ (asynced ↔ asynced0) ∧ mkinode(m3, md1, true, # links(m3, cache_dirs), cache_dirs[m3].nsubdirs, m9) = p_inode ∧ mkinode(entries[str], md0, false, m0, 0, m6) = c_inode ∧ negdentry(str) = dent ∧ ESUCCESS = err)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Rule argument

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