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Proof step 79 from proof fsync-pages-err (previous step)

err = ESUCCESS, ino = m, key = datakey(ino, pageno), pageno = n, n * VFS_PAGE_SIZE < m2, err0 = ESUCCESS ∨ ⌊err0⌋ ⊦ [asynced0 := false; if asynced0 ∧ asynced then let buf = ? in {pcache_get#(m, n, pcache; asynced0, buf, err); if err = ESUCCESS then afs_writepage#(mkinode(m, md, boolvar, m0, m1, m2), n, buf, dirs; err, files; asynced1); if err = ESUCCESS then afs_check_commit#(dirs, files; err; asynced1); if err = ESUCCESS then {asynced := false; pcache_set_status#(m, n, asynced; err, pcache)}}; n := n + 1] (err = ESUCCESS ∨ ⌊err⌋ ), key ∈ pcache

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Proof step 80:
err = ESUCCESS, ino = m, key = datakey(ino, pageno), pageno = n, n * VFS_PAGE_SIZE < m2, err0 = ESUCCESS ∨ ⌊err0⌋ ⊦ [if false ∧ asynced then let buf = ? in {asynced0 := false; pcache_get#(m, n, pcache; asynced0, buf, err); if err = ESUCCESS then afs_writepage#(mkinode(m, md, boolvar, m0, m1, m2), n, buf, dirs; err, files; asynced1); if err = ESUCCESS then afs_check_commit#(dirs, files; err; asynced1); if err = ESUCCESS then {asynced := false; pcache_set_status#(m, n, asynced; err, pcache)}}; n := n + 1] (err = ESUCCESS ∨ ⌊err⌋ ), key ∈ pcache

Proof step 79 from proof fsync-pages-err (previous step)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Rule argument

Additional information