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Proof step 20 from proof inv-readpage (previous step)

# buf = VFS_PAGE_SIZE, asynced ↔ asynced0, ¬ asynced0, ino = m, key = datakey(ino, pageno), afs-cons(dirs, files), dcache-cons(dcache, dirs, files), icache-cons(icache, dirs, files), pcache-cons(pcache, dirs, files), synced(dirs, icache, pcache), m ∈ files, asynced2 → synced(files, icache, pcache) ⊦ ⟪err := ESUCCESS; if ¬ false ∨ err ≠ ESUCCESS then {afs_readpage#(mkinode(m, md, boolvar, m0, m1, m2), pageno, dirs, files, asynced1; buf, err); if err = ESUCCESS ∧ buf ≠ zeropage then let asynced = false in pcache_set#(m, pageno, buf, asynced; err, pcache)}⟫ (pcache-cons(pcache, dirs, files) ∧ synced(dirs, icache, pcache) ∧ (asynced2 → synced(files, icache, pcache))), key ∈ pcache

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Proof step 21:
# buf = VFS_PAGE_SIZE, asynced ↔ asynced0, ¬ asynced0, err = ESUCCESS, ino = m, key = datakey(ino, pageno), afs-cons(dirs, files), dcache-cons(dcache, dirs, files), icache-cons(icache, dirs, files), pcache-cons(pcache, dirs, files), synced(dirs, icache, pcache), m ∈ files, asynced2 → synced(files, icache, pcache) ⊦ ⟪if ¬ false ∨ err ≠ ESUCCESS then {afs_readpage#(mkinode(m, md, boolvar, m0, m1, m2), pageno, dirs, files, asynced1; buf, err); if err = ESUCCESS ∧ buf ≠ zeropage then let asynced = false in pcache_set#(m, pageno, buf, asynced; err, pcache)}⟫ (pcache-cons(pcache, dirs, files) ∧ synced(dirs, icache, pcache) ∧ (asynced2 → synced(files, icache, pcache))), key ∈ pcache

Proof step 20 from proof inv-readpage (previous step)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Rule argument

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