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Proof step 4 from proof unmodified-save (previous step)

⊦ save(mkznode(r0, zbrar, boolvar, true, m0)) = indexnode (save(mkznode(r0, zbrar, boolvar, false, m0).zbranches, 0, mkznode(r0, zbrar, boolvar, false, m0).usedsize), mkznode(r0, zbrar, boolvar, false, m0).leaf, mkznode(r0, zbrar, boolvar, false, m0).usedsize)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
⊦ save(mkznode(r0, zbrar, boolvar, true, m0)) = indexnode(save(zbrar, 0, m0), boolvar, m0)

Rule argument

Additional information

Used simplifier rules: ⊦ mkznode(r, zbrar, boolvar, boolvar0, m).leaf ↔ boolvar; (s)% ⊦ mkznode(r, zbrar, boolvar, boolvar0, m).usedsize = m; (s)% ⊦ mkznode(r, zbrar, boolvar, boolvar0, m).zbranches = zbrar; (s)