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Proof step 1 from proof btree-inv-remove-refsize0 (conclusion)

¬ dirty ∨ rp = null ⊦ inv(istore) ∧ inv(istore0) ∧ zh[rp] = mkznode(rp0, zbrar, boolvar, dirty, nused) ∧ btree-inv(rp, adr, istore, istore0, zh, ri, fi) ∧ istore0 ⊑ istore → btree-inv(rp, adr, remove-refsize0(istore), remove-refsize0(istore), zh, ri, fi)

System applied rule normalize

And obtained the following new goals

Proof step 2:
zh[rp] = mkznode(rp0, zbrar, boolvar, dirty, nused), btree-inv(rp, adr, istore, istore0, zh, ri, fi), inv(istore), inv(istore0), istore0 ⊑ istore, ¬ dirty ∨ rp = null ⊦ btree-inv(rp, adr, remove-refsize0(istore), remove-refsize0(istore), zh, ri, fi)

Proof step 1 from proof btree-inv-remove-refsize0 (conclusion)

System applied rule normalize

And obtained the following new goals

Rule argument

Additional information