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Proof step 4 from proof union-newref-01 (conclusion)

⊦ ¬ r ∈ st → (newref(r, st ∪ st0) ↔ newref(r, st0))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 1:
⊦ newref(r, st ∪ st0) ↔ newref(r, st) ∧ newref(r, st0)
Proof step 3:
newref(r, st0) ⊦ r = jvmref, r ∈ st, newref(r, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPFORWARD : ⊦ newref(r, st) → r ≠ jvmref])]]