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Proof step 39 from proof refine-iget (previous step)

cache_icache[m] = mkientry(true, mkinode(m, md, false, # links(m, cache_dirs), 0, m2)), ((cache_files ⊕ cache_pcache) ⊕ cache_icache)[m] = mkfile(m0, md0, m1, content), cache_files[m] = mkfile(m3, md1, # links(m, cache_dirs), content0), mkinode(m, md, false, # links(m, cache_dirs), 0, m2) ≠ mkinode(m, md0, false, m1, 0, m0), afs-cons(cache_dirs, (cache_files ⊕ cache_pcache) ⊕ cache_icache), afs-cons(cache_dirs, cache_files), dcache-cons(cache_dcache, cache_dirs, cache_files), pcache-cons(cache_pcache, cache_dirs, cache_files), synced(cache_dirs, cache_icache, cache_pcache), m ∈ cache_files, m ∈ cache_icache, cache_sync → synced(cache_files, cache_icache, cache_pcache), ∀ ino0. ino0 ∈ cache_icache → cache_icache[ino0].inode.ino = ino0 ∧ (cache_icache[ino0].dirty ⊃ cache_icache[ino0].inode.ino ∈ cache_files ∧ cache_icache[ino0].inode.nlink = cache_files[cache_icache[ino0].inode.ino].nlink ∧ cache_icache[ino0].inode.nsubdirs = 0 ∧ ¬ cache_icache[ino0].inode.directory ; (ino0 ∈ cache_dirs ∨ ino0 ∈ cache_files) ∧ cache_icache[ino0].inode = (cache_icache[ino0].inode.ino ∈ cache_dirs ⊃ mkinode (cache_icache[ino0].inode.ino, cache_dirs[cache_icache[ino0].inode.ino].meta, true, cache_dirs[cache_icache[ino0].inode.ino].nlink, cache_dirs[cache_icache[ino0].inode.ino].nsubdirs, cache_dirs[cache_icache[ino0].inode.ino].size) ;mkinode (cache_icache[ino0].inode.ino, cache_files[cache_icache[ino0].inode.ino].meta, false, cache_files[cache_icache[ino0].inode.ino].nlink, 0, cache_files[cache_icache[ino0].inode.ino].size) ) ) ⊦ ∃ err0. ⌊err0⌋ ∧ ⟨err := err0⟩ (mkinode(m, md, false, # links(m, cache_dirs), 0, m2) = inode ∧ ESUCCESS = err)

Heuristic use patterns applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

spec: cache-base name: at-icache-overwrite seq: ⊦ ino ∈ icache ∧ ¬ icache[ino].inode.directory → (files ⊕ icache)[ino] = mkfile (icache[ino].inode.size, icache[ino].inode.meta, icache[ino].inode.nlink, files[ino].content) subst: [ino, icache, files] → [m, cache_icache, cache_files ⊕ cache_pcache] flags: <all paths>

Additional information

Used simplifier rules: ⊦ (files ⊕ pcache)[ino] = mkfile (files[ino].size, files[ino].meta, files[ino].nlink, files[ino].content ⊕ mkcontent(ino, pcache)); (s)% ⊦ mkfile(m, md, m0, content).content = content; (s)%⊦ mkfile(m, md, m0, content) = mkfile(m1, md0, m2, content0) ↔ m = m1 ∧ md = md0 ∧ m0 = m2 ∧ content = content0; (ws)% ⊦ mkientry(boolvar, inode).inode = inode; (s)% ⊦ mkinode(m, md, boolvar, m0, m1, m2).meta = md; (s)% ⊦ mkinode(m, md, boolvar, m0, m1, m2).nlink = m0; (s)% ⊦ mkinode(m, md, boolvar, m0, m1, m2).size = m2; (s)%⊦ ino ∈ icache ∧ icache[ino].inode.directory → (files ⊕ icache)[ino] = files[ino]; (s)% ⊦ mkfile(m, md, m0, content).meta = md; (s)% ⊦ mkfile(m, md, m0, content).nlink = m0; (s)% ⊦ mkfile(m, md, m0, content).size = m; (s)% ⊦ mkinode(m, md, boolvar, m0, m1, m2).directory ↔ boolvar; (s) Used terms: m, cache_icache, cache_files ⊕ cache_pcache