| ⊦ valid⊆(str, st, st0[jvmref -- sk, val]) ↔ valid⊆(str, st, st0) |
⊦ rk .ref = jvmref → (valid⊆(str, st, st0[rk, val]) ↔ valid⊆(str, st, st0))
[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (r -- sk) .ref = r])], [EXTRATERMS : (val, jvmref -- sk, st0, st, str)]]