[Imprint][Data Privacy Statement][E-Mail]

View long theorem info. View the proof. Back to main index. View the specification. View theorem base summary, View theorem base listing, the used properties by spec, the dependency list, the symbol table,

Proof step 226 from proof inv-rmdir (previous step)

# links(entries[str], dirs) = dirs[entries[str]].nlink, # links(m, dirs) = dirs[m].nlink, dirs[entries[str]].entries = ∅, entries[str] = dirs[m].entries[str], dirs[entries[str]] = mkdir(dirs[entries[str]].size, md2, dirs[entries[str]].nlink, dirs[entries[str]].nsubdirs, ∅), dirs[m] = mkdir(dirs[m].size, md3, dirs[m].nlink, dirs[m].nsubdirs, entries), entries[str] ≠ ROOT_INO, afs-cons(dirs, files), dcache-cons(dcache, dirs, files), icache-cons(icache, dirs, files), pcache-cons(pcache, dirs, files), synced(dirs, icache, pcache), str ∈ dirs[m].entries, entries[str] ∈ dirs, str ∈ entries, m ∈ dirs, asynced1 → synced(files, icache, pcache), links(m, dirs) ≠ ∅ ∨ m = ROOT_INO ⊦ [fail#(; ; err); asynced := ?] ⟪if err = ESUCCESS then let asynced = false in {icache_set# (mkinode(entries[str], md0, true, dirs[entries[str]].nlink, dirs[entries[str]].nsubdirs, dirs[entries[str]].size), asynced; err, icache); icache_set#(mkinode(m, md, true, # links(m, dirs), dirs[m].nsubdirs, dirs[m].size), asynced; err, icache); dcache_delete#(m, mkdentry(str, entries[str]).name; err, dcache)}⟫ ( icache-cons(icache, dirs, files) ∧ dcache-cons(dcache, dirs, files) ∧ synced(dirs, icache, pcache) ∧ (asynced1 → synced(files, icache, pcache)))

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 227:
# links(m, dirs) = dirs[m].nlink, # links(entries[str], dirs) = m1, dirs[m] = mkdir(dirs[m].size, md3, dirs[m].nlink, dirs[m].nsubdirs, entries), dirs[entries[str]] = mkdir(m0, md2, m1, m2, ∅), entries[str] = dirs[m].entries[str], dirs[entries[str]] = mkdir(m0, md1, m1, m2, entries0), entries0 = ∅, afs-cons(dirs, files), dcache-cons(dcache, dirs, files), icache-cons(icache, dirs, files), pcache-cons(pcache, dirs, files), synced(dirs, icache, pcache), m ∈ dirs, str ∈ entries, entries[str] ∈ dirs, str ∈ dirs[m].entries, asynced1 → synced(files, icache, pcache), links(m, dirs) ≠ ∅ ∨ m = ROOT_INO ⊦ [fail#(; ; err); asynced := ?] ⟪if err = ESUCCESS then let asynced = false in {icache_set#(mkinode(entries[str], md0, true, m1, m2, m0), asynced; err, icache); icache_set#(mkinode(m, md, true, # links(m, dirs), dirs[m].nsubdirs, dirs[m].size), asynced; err, icache); dcache_delete#(m, mkdentry(str, entries[str]).name; err, dcache)}⟫ ( icache-cons(icache, dirs, files) ∧ dcache-cons(dcache, dirs, files) ∧ synced(dirs, icache, pcache) ∧ (asynced1 → synced(files, icache, pcache))), entries[str] = ROOT_INO

Rule argument

spec: abstract-dir name: elim seq: ⊦ ( ((m = ad.size ∧ md = ad.meta) ∧ m0 = ad.nlink) ∧ m1 = ad.nsubdirs) ∧ entries = ad.entries ↔ ad = mkdir(m, md, m0, m1, entries) subst: [ad, m, md, m0, m1, entries] → [dirs[entries[str]], m0, md1, m1, m2, entries0]

Additional information

Used simplifier rules: ⊦ ( ((m = ad.size ∧ md = ad.meta) ∧ m0 = ad.nlink) ∧ m1 = ad.nsubdirs) ∧ entries = ad.entries ↔ ad = mkdir(m, md, m0, m1, entries); (elim) Used terms: dirs[entries[str]], m0, md1, m1, m2, entries0