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Proof step 4 from proof inv-truncate (previous step)

m0 = 0 ∧ m ≠ ROOT_INO ↔ inodekey(m) ∈ ro, ¬ boolvar1, inode = mkinode(m, md, boolvar1, m0, m1, m2), m0 = fs[ri[inodekey(m)]].nlink, m1 = fs[ri[inodekey(m)]].nsubdirs, ro.inodes?, fo.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-inj(ri), ri-inj(fi), ubifs-cons(fs, ri, ro, fi, fo, log), inodekey(m) ∈ ri, buf-opt.some? → # buf-opt.buf = VFS_PAGE_SIZE ⊦ ⟪aubifs_truncate#(n, m2 / VFS_PAGE_SIZE, fi, ro, fo; buf-opt, inode, boolvar, err, ri, fs, log, boolvar0)⟫ (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)), fs[ri[inodekey(m)]].directory

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
fs[ri[inodekey(m)]].nlink = 0 ∧ m ≠ ROOT_INO ↔ inodekey(m) ∈ ro, inode = mkinode(m, md, false, fs[ri[inodekey(m)]].nlink, fs[ri[inodekey(m)]].nsubdirs, m2), 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-inj(fi), ri-inj(ri), ubifs-cons(fs, ri, ro, fi, fo, log), inodekey(m) ∈ ri, ¬ fs[ri[inodekey(m)]].directory, buf-opt.some? → # buf-opt.buf = VFS_PAGE_SIZE ⊦ ⟪aubifs_truncate#(n, m2 / VFS_PAGE_SIZE, fi, ro, fo; buf-opt, inode, boolvar, err, ri, fs, log, boolvar0)⟫ (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))

Proof step 4 from proof inv-truncate (previous step)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information