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Proof step 6 from proof btree-sub-clean-write-branches (previous step)

zh[r] = mkznode(r0, zbrar, boolvar, boolvar0, m), zh[zbrar[n].child] = mkznode(r1, zbrar0, boolvar1, boolvar2, m0), ¬ boolvar2, n < # zbrar, btree-sub-clean(r, n, zh) ⊦ btree-sub-clean(r, n + 1, zh[r, mkznode(r0, zbrar[n, mkzbranch(key, adr, zbrar[n].child)], boolvar, boolvar0, m)])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 7:
zh[zbrar[n].child] = mkznode(r1, zbrar0, boolvar1, false, m0), zh[r] = mkznode(r0, zbrar, boolvar, boolvar0, m), n < # zbrar, btree-sub-clean(r, n, zh) ⊦ btree-sub-clean(r, n + 1, zh[r, mkznode(r0, zbrar[n, mkzbranch(key, adr, zbrar[n].child)], boolvar, boolvar0, m)])

Proof step 6 from proof btree-sub-clean-write-branches (previous step)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

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