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Proof step 4 from proof classof-05 (previous step)

⊦ r ≠ jvmref ∧ r -- _type ∈ st[_mode, val] ∧ (st[_mode, val][r -- _type]) = typeval(mkclasstype(class1)) ↔ classof(r, class1, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
⊦ r -- _type ∈ st ∧ r ≠ jvmref ∧ st[r -- _type] = typeval(mkclasstype(class1)) ↔ classof(r, class1, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ r -- _type ≠ _mode], [CSIMPSEQ : ⊦ (st[rk0, val][rk]) = ((rk = rk0 ⊃ val; st[rk]))], [CSIMPSEQ : ⊦ r -- _type ∈ st[_mode, val] ↔ r -- _type ∈ st])]]