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Proof step 1496 from proof refine-truncate-buff-none-cached (previous step)

# buf0 = VFS_PAGE_SIZE, ((cache_files ⊕ cache_pcache) ⊕ cache_icache)[m] = mkfile(m3, md1, # links(m, cache_dirs), content0), cache_files[m] = mkfile(m1, md2, # links(m, cache_dirs), content1), cache_pcache[datakey(m, m2 / VFS_PAGE_SIZE)] = mkpentry(boolvar, buf0), content = content0, ino = m, afs-cons(cache_dirs, (cache_files ⊕ cache_pcache) ⊕ cache_icache), afs-cons(cache_dirs, cache_files), 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), datakey(m, m2 / VFS_PAGE_SIZE) ∈ cache_pcache, m ∈ cache_files, ⌊err1⌋ , cache_sync → synced(cache_files, cache_icache, cache_pcache) ⊦ ⟨old_ino := m2 % VFS_PAGE_SIZE, size := min(n, m2); asynced0 := m2 ≤ n ∧ old_ino ≠ 0 ∧ m2 / VFS_PAGE_SIZE ∈ content; buf-opt := none; afs_files := (cache_files ⊕ cache_pcache) ⊕ cache_icache; if asynced0 then {pageno := m2 / VFS_PAGE_SIZE; if buf-opt.some? then buf := buf-opt.buf else buf := afs_files[ino].content[pageno]; buf := fill(buf, zero, old_ino, VFS_PAGE_SIZE - old_ino); content[pageno] := buf; buf-opt := some(buf)}; afs_files[ino].content := content upto size; let new_inode = mkinode(m, md, false, # links(m, cache_dirs), 0, m2) in {new_inode.size := n; cache_dirs0 := cache_dirs; afs_inode_sync#(new_inode; cache_dirs, afs_files)}; inode := (m ∈ cache_dirs ⊃ mkinode(m, cache_dirs[m].meta, true, cache_dirs[m].nlink, cache_dirs[m].nsubdirs, cache_dirs[m].size) ;mkinode(m, afs_files[m].meta, false, afs_files[m].nlink, 0, afs_files[m].size) ); err := ESUCCESS; asynced := ?⟩ ( cache_dirs = cache_dirs0 ∧ afs_files = (cache_files ⊕ cache_pcache) ⊕ cache_icache ∧ (asynced ↔ asynced2) ∧ none = buf-opt ∧ mkinode(m, md, false, # links(m, cache_dirs0), 0, m2) = inode ∧ (asynced5 ↔ asynced0) ∧ err1 = err), ⟨err := err1; asynced := ?⟩ ((asynced ↔ asynced2) ∧ err1 = err)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Proof step 1497:
# buf0 = VFS_PAGE_SIZE, cache_pcache[datakey(m, m2 / VFS_PAGE_SIZE)] = mkpentry(boolvar, buf0), cache_files[m] = mkfile(m1, md2, # links(m, cache_dirs), content1), ((cache_files ⊕ cache_pcache) ⊕ cache_icache)[m] = mkfile(m3, md1, # links(m, cache_dirs), content0), content = content0, ino = m, old_ino = m2 % VFS_PAGE_SIZE, size = min(n, 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), m ∈ cache_files, datakey(m, m2 / VFS_PAGE_SIZE) ∈ cache_pcache, ⌊err1⌋ , cache_sync → synced(cache_files, cache_icache, cache_pcache) ⊦ ⟨asynced0 := m2 ≤ n ∧ old_ino ≠ 0 ∧ m2 / VFS_PAGE_SIZE ∈ content; buf-opt := none; afs_files := (cache_files ⊕ cache_pcache) ⊕ cache_icache; if asynced0 then {pageno := m2 / VFS_PAGE_SIZE; if buf-opt.some? then buf := buf-opt.buf else buf := afs_files[ino].content[pageno]; buf := fill(buf, zero, old_ino, VFS_PAGE_SIZE - old_ino); content[pageno] := buf; buf-opt := some(buf)}; afs_files[ino].content := content upto size; let new_inode = mkinode(m, md, false, # links(m, cache_dirs), 0, m2) in {new_inode.size := n; cache_dirs0 := cache_dirs; afs_inode_sync#(new_inode; cache_dirs, afs_files)}; inode := (m ∈ cache_dirs ⊃ mkinode(m, cache_dirs[m].meta, true, cache_dirs[m].nlink, cache_dirs[m].nsubdirs, cache_dirs[m].size) ;mkinode(m, afs_files[m].meta, false, afs_files[m].nlink, 0, afs_files[m].size) ); err := ESUCCESS; asynced := ?⟩ ( cache_dirs = cache_dirs0 ∧ afs_files = (cache_files ⊕ cache_pcache) ⊕ cache_icache ∧ (asynced ↔ asynced2) ∧ none = buf-opt ∧ mkinode(m, md, false, # links(m, cache_dirs0), 0, m2) = inode ∧ (asynced5 ↔ asynced0) ∧ err1 = err), ⟨err := err1; asynced := ?⟩ ((asynced ↔ asynced2) ∧ err1 = err), VFS_PAGE_SIZE = 0

Rule argument

Additional information

Used simplifier rules: ⊦ VFS_PAGE_SIZE ≠ 0; (s)