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Proof step 155 from proof truncate-inv (previous step)

⟨let ino = inode.ino in if ino ∈ files then {files[ino].size := inode.size; files[ino].meta := inode.meta} else if ino ∈ dirs then dirs[ino].meta := inode.meta⟩ (dirs = dirs0 ∧ files = files0), VFS_PAGE_SIZE = n1 + m0 % VFS_PAGE_SIZE, files1[ino4] = mkfile(m0, md, # links(ino4, dirs), content0), files0[ino4] = mkfile(m, md0, m1, content1), files = files1 [ino4, mkfile(m0, md, # links(ino4, dirs), content0[m0 / VFS_PAGE_SIZE, fill(content0[m0 / VFS_PAGE_SIZE], zero, m0 % VFS_PAGE_SIZE, n1)] upto m0) ], inode = mkinode(ino4, md, false, # links(ino4, dirs), 0, m0), afs-cons(dirs0, files0), afs-cons(dirs, files1), files1 ~ files0, m0 / VFS_PAGE_SIZE ∈ content0, ino4 ∈ files1, n0 ≤ # buf0 ⊦ m0 % VFS_PAGE_SIZE = 0, ino4 ∈ files0 ∧ m = m0

Heuristic symbolic execution applied rule let left

And obtained the following new goals

Rule argument

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