| ⊦ jvmref ∈ refs → newref_list(n, st) ≠ r ' + refs |
newref_list(n, st) = r ' + refs, jvmref ∈ refs, r ∈ newref_list(n, st) ⊦
[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1], [CSIMPFORWARD : ⊦ r ' + refs = refs0 → r ∈ refs0])]]