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Proof step 621 from proof inv-truncate (previous step)

m = 0 ∧ m0 ≠ ROOT_INO ↔ inodekey(m0) ∈ ro, fs0[ri0[inodekey(m0)]] = inodenode(key, md, false, m, m1, m2), replay-log(log0, fs0, fi ⊖ fo) = ri0 ⊖ ro, ro.inodes?, fo.inodes?, file-node-cons(fs0, ri0), log-cons(log0, fs0), orphans-cons(fs0, ri0, ro), replay-safe(log0, fs0, fi ⊖ fo), ri-cons(ri0, fs0), ri-inj(ri0), ri-inj(fi), ubifs-cons(fs0, ri0, ro, fi, fo, log0), inodekey(m0) ∈ ri0, ri0[inodekey(m0)] ∈ fs0, m4 ≤ n0 ⊦ m4 % VFS_PAGE_SIZE = 0, adr1 = adr2, m0 = 0, buf-opt.some?, adr2 ∈ fs0, adr1 ∈ fs0, datakey(m0, m4 / VFS_PAGE_SIZE) ∈ ri0, adr2 ∈ log0, replay-safe(log0, fs0[adr1, truncnode(inodekey(m0), m4)][adr2, inodenode(inodekey(m0), md0, false, m, m1, n0)], fi ⊖ fo) ∧ ¬ adr1 ∈ replay-log(log0, fs0[adr1, truncnode(inodekey(m0), m4)][adr2, inodenode(inodekey(m0), md0, false, m, m1, n0)], fi ⊖ fo) ∧ ¬ adr2 ∈ replay-log(log0, fs0[adr1, truncnode(inodekey(m0), m4)][adr2, inodenode(inodekey(m0), md0, false, m, m1, n0)], fi ⊖ fo) \ datakeys (inodekey(m0), m4, replay-log(log0, fs0[adr1, truncnode(inodekey(m0), m4)][adr2, inodenode(inodekey(m0), md0, false, m, m1, n0)], fi ⊖ fo)) ∧ (m ≠ 0 ∨ m0 = ROOT_INO ⊃ ( replay-log(log0, fs0[adr1, truncnode(inodekey(m0), m4)][adr2, inodenode(inodekey(m0), md0, false, m, m1, n0)], fi ⊖ fo) \ datakeys (inodekey(m0), m4, replay-log(log0, fs0[adr1, truncnode(inodekey(m0), m4)][adr2, inodenode(inodekey(m0), md0, false, m, m1, n0)], fi ⊖ fo)) )[inodekey(m0), adr2 ] ; ( replay-log(log0, fs0[adr1, truncnode(inodekey(m0), m4)][adr2, inodenode(inodekey(m0), md0, false, 0, m1, n0)], fi ⊖ fo) \ datakeys (inodekey(m0), m4, replay-log(log0, fs0[adr1, truncnode(inodekey(m0), m4)][adr2, inodenode(inodekey(m0), md0, false, 0, m1, n0)], fi ⊖ fo))) ⊖ inodekey(m0) ) = (ri0[inodekey(m0), adr2] \ datakeys(inodekey(m0), m4, ri0[inodekey(m0), adr2])) ⊖ ro

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 622:
m = 0 ∧ m0 ≠ ROOT_INO ↔ inodekey(m0) ∈ ro, fs0[ri0[inodekey(m0)]] = inodenode(key, md, false, m, m1, m2), replay-log(log0, fs0, fi ⊖ fo) = ri0 ⊖ ro, fo.inodes?, ro.inodes?, file-node-cons(fs0, ri0), log-cons(log0, fs0), orphans-cons(fs0, ri0, ro), replay-safe(log0, fs0, fi ⊖ fo), ri-cons(ri0, fs0), ri-inj(fi), ri-inj(ri0), ubifs-cons(fs0, ri0, ro, fi, fo, log0), ri0[inodekey(m0)] ∈ fs0, inodekey(m0) ∈ ri0, m4 ≤ n0 ⊦ m4 % VFS_PAGE_SIZE = 0, adr1 = adr2, m0 = 0, buf-opt.some?, adr2 ∈ log0, datakey(m0, m4 / VFS_PAGE_SIZE) ∈ ri0, adr1 ∈ fs0, adr2 ∈ fs0, replay-safe(log0, fs0[adr1, truncnode(inodekey(m0), m4)], fi ⊖ fo) ∧ ¬ adr1 ∈ replay-log(log0, fs0[adr1, truncnode(inodekey(m0), m4)], fi ⊖ fo) ∧ ¬ adr2 ∈ replay-log(log0, fs0[adr1, truncnode(inodekey(m0), m4)], fi ⊖ fo) \ datakeys(inodekey(m0), m4, replay-log(log0, fs0[adr1, truncnode(inodekey(m0), m4)], fi ⊖ fo)) ∧ (m ≠ 0 ∨ m0 = ROOT_INO ⊃ ( replay-log(log0, fs0[adr1, truncnode(inodekey(m0), m4)], fi ⊖ fo) \ datakeys(inodekey(m0), m4, replay-log(log0, fs0[adr1, truncnode(inodekey(m0), m4)], fi ⊖ fo)) )[inodekey(m0), adr2 ] ; ( replay-log(log0, fs0[adr1, truncnode(inodekey(m0), m4)], fi ⊖ fo) \ datakeys(inodekey(m0), m4, replay-log(log0, fs0[adr1, truncnode(inodekey(m0), m4)], fi ⊖ fo))) ⊖ inodekey(m0) ) = (ri0[inodekey(m0), adr2] \ datakeys(inodekey(m0), m4, ri0[inodekey(m0), adr2])) ⊖ ro

Rule argument

Additional information

Used simplifier rules: ⊦ ¬ adr ∈ log → replay-log(log, fs[adr, nd], ri) = replay-log(log, fs, ri); (s)%⊦ ¬ adr ∈ log → (replay-safe(log, fs[adr, nd], ri) ↔ replay-safe(log, fs, ri)); (s)