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Proof step 20 from proof inv-gc (previous step)

# kx = # ax, as ∩ ax.toSet = ∅, as ∩ log0.toSet = ∅, ax.toSet ∩ log0.toSet = ∅, as ∩ range ri0[kx, ax] = ∅, fo.inodes?, ro.inodes?, log-cons(log0, fs0), new(ax, fs0), ri-cons(ri0, fs0), ri-cons(ri0[kx, ax], fs0[ax, fs0[ri0[kx]]]), ri-inj(fi), ri-inj(ri0), kx.toSet ⊆ dom ri0 ⊦ dups(ax), dups(kx), log-cons(log0, fs0[ax, fs0[ri0[kx]]] \ as) ∧ true

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 21:
# kx = # ax, as ∩ range ri0[kx, ax] = ∅, ax.toSet ∩ log0.toSet = ∅, as ∩ log0.toSet = ∅, as ∩ ax.toSet = ∅, ro.inodes?, fo.inodes?, log-cons(log0, fs0), new(ax, fs0), node-cons(fs0[adr].key, fs0[adr]), ri-cons(ri0[kx, ax], fs0[ax, fs0[ri0[kx]]]), ri-cons(ri0, fs0), ri-inj(ri0), ri-inj(fi), adr ∈ log0, adr ∈ fs0, kx.toSet ⊆ dom ri0 ⊦ dups(kx), dups(ax), adr ∈ fs0[ax, fs0[ri0[kx]]] \ as ∧ node-cons((fs0[ax, fs0[ri0[kx]]] \ as)[adr].key, (fs0[ax, fs0[ri0[kx]]] \ as)[adr])

Rule argument

Additional information

Used simplifier rules: ⊦ log-cons(log, fs) → ( log-cons(log0, fs0) ↔ (∀ adr. (adr ∈ log → adr ∈ fs ∧ node-cons(fs[adr].key, fs[adr])) → adr ∈ log0 → adr ∈ fs0 ∧ node-cons(fs0[adr].key, fs0[adr]))); (ss)