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Proof step 2 from proof btree-crash (previous step)

((btree(null, null, adr, height, false, fi, iast0, as, alladrs, ok) * true))(zh0) ⊦ ((btree(null, null, adr, height, false, fi, iast0, as, alladrs, ok) * true))(zh1)

Heuristic simplifier applied rule simplifier

And closed the goal!

Rule argument

Additional information

Used simplifier rules: btree-null: ⊦ (( btree (rp, null, adr, height, dirty0, ri, iast, as, alladrs, nstat) * true) )(zh0) → (( btree (rp, null, adr, height, dirty0, ri, iast, as, alladrs, nstat) * true) )(zh1);%sep-com: ⊦ P * P2 = P2 * P; from specification heap-sep[zheap]%sep-ass: ⊦ (P * P3) * P4 = P * P3 * P4; from specification heap-sep[zheap]