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Proof step 840 from proof inv-truncate (previous step)

fs[ri[inodekey(m0)]].nlink = 0 ∧ m0 ≠ ROOT_INO ↔ inodekey(m0) ∈ ro, fs[ri[inodekey(m0)]].inode?, fo.inodes?, ro.inodes?, file-node-cons(fs, ri), log-cons(log, fs), orphans-cons(fs, ri, ro), replay-cons-strong(fs, ri, ro, fi, fo, log), ri-cons(ri, fs), ri-inj(fi), ri-inj(ri), ubifs-cons(fs, ri, ro, fi, fo, log), inodekey(m0) ∈ ri, ri[inodekey(m0)] ∈ fs, buf-opt.some? → # buf-opt.buf = VFS_PAGE_SIZE ⊦ ⟪choose err0 with ⌊err0⌋ in err := err0; adr0 := ?, adr := ?; boolvar := ?; if err = ESUCCESS then {ri0 := ri; ri1 := ri; ri2 := ri; aubifs_core_index_store#(inodekey(m0), adr, fi, ro, fo, fs, log, boolvar; ri); aubifs_core_index_truncate#(inodekey(m0), min(n, m4), fi, ro, fo, fs, log, boolvar; ri); boolvar1 := false; inode := mkinode (mkinode(m0, md, false, fs[ri2[inodekey(m0)]].nlink, fs[ri2[inodekey(m0)]].nsubdirs, m4).ino, inodenode(inodekey(m0), md, false, fs[ri0[inodekey(m0)]].nlink, fs[ri0[inodekey(m0)]].nsubdirs, n).meta, inodenode(inodekey(m0), md, false, fs[ri0[inodekey(m0)]].nlink, fs[ri0[inodekey(m0)]].nsubdirs, n).directory, inodenode(inodekey(m0), md, false, fs[ri0[inodekey(m0)]].nlink, fs[ri0[inodekey(m0)]].nsubdirs, n).nlink, inodenode(inodekey(m0), md, false, fs[ri0[inodekey(m0)]].nlink, fs[ri0[inodekey(m0)]].nsubdirs, n).nsubdirs, inodenode(inodekey(m0), md, false, fs[ri0[inodekey(m0)]].nlink, fs[ri0[inodekey(m0)]].nsubdirs, n).size); if boolvar1 then buf-opt := some(inodenode(inodekey(m0), md, false, fs[ri1[inodekey(m0)]].nlink, fs[ri1[inodekey(m0)]].nsubdirs, n).data)}⟫ (ubifs-cons(fs, ri, ro, fi, fo, log) ∧ replay-cons-strong(fs, ri, ro, fi, fo, log) ∧ file-node-cons(fs, ri) ∧ orphans-cons(fs, ri, ro)), m0 = 0, fs[ri[inodekey(m0)]].directory, m4 ≤ n ∧ m4 % VFS_PAGE_SIZE ≠ 0

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Rule argument

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