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Proof step 3 from proof inv-lookup (previous step)

ro.inodes?, fo.inodes?, log-cons(log, fs), ri-cons(ri, fs), ri-inj(ri), ri-inj(fi) ⊦ ⟪aubifs_core_index_lookup#(key, ri, fi, ro, fo, fs, log, boolvar; boolvar0, nd; err)⟫ true

Heuristic unfold applied rule call right

And obtained the following new goals

Proof step 4:
boolvar0 ↔ boolvar2, boolvar ↔ boolvar1, fo.inodes?, ro.inodes?, log-cons(log, fs), ri-cons(ri, fs), ri-inj(fi), ri-inj(ri) ⊦ ⟪if ri-cons(ri, fs) then {fail_or_success#(; ; err); if err = ESUCCESS then {boolvar := key ∈ ri; if boolvar then nd := fs[ri[key]] else nd := ?} else boolvar := ?, nd := ?} else abort⟫ true

Rule argument

pos: right 1

Additional information

Used simplifier rules: lookup: ⊦ ;