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Proof step 3 from proof write-block-inv (previous step)

isdir ↔ bv, files = files1, ino = (ino2 + ino0) % VFS_PAGE_SIZE, ino0 = n, ino1 = n1, ino2 = n0, pageno = (ino2 + ino0) / VFS_PAGE_SIZE, write-inv(n0, n1, inode, buf, n, dirs, files0, files1) ⊦ [let n = min(ino1 - ino2 + ino0, VFS_PAGE_SIZE - ino) in if n ≠ 0 then {vfs_writepage#(inode, pageno, buf, ino0, ino, n, dirs; err, files, asynced); if err = ESUCCESS then ino0 := ino0 + n} else isdir := true] write-inv(n0, n1, inode, buf, ino0, dirs, files0, files), VFS_PAGE_SIZE = 0

Heuristic symbolic execution applied rule let right

And obtained the following new goals

Proof step 4:
isdir ↔ bv, files = files1, ino = (ino2 + ino0) % VFS_PAGE_SIZE, ino0 = n2, ino1 = n1, ino2 = n0, n = min(ino1 - ino2 + ino0, VFS_PAGE_SIZE - ino), pageno = (ino2 + ino0) / VFS_PAGE_SIZE, write-inv(n0, n1, inode, buf, n2, dirs, files0, files1), ino1 ≥ ino2 + ino0, VFS_PAGE_SIZE ≥ ino ⊦ [if n ≠ 0 then {vfs_writepage#(inode, pageno, buf, ino0, ino, n, dirs; err, files, asynced); if err = ESUCCESS then ino0 := ino0 + n} else isdir := true] write-inv(n0, n1, inode, buf, ino0, dirs, files0, files), VFS_PAGE_SIZE = 0

Proof step 3 from proof write-block-inv (previous step)

Heuristic symbolic execution applied rule let right

And obtained the following new goals

Rule argument

Additional information