| ⊦ rk1 .ref = jvmref ∧ rk ≠ rk1 ∧ validrefvalnotnull(str, val1, ty1, st) → validrefvalnotnull(str, val1, ty1, st[rk1, val]) |
rk1 .ref = jvmref, validrefvalnotnull(str, val1, ty1, st) ⊦ rk = rk1, validrefvalnotnull(str, val1, ty1, st[rk1, val])
[[CONCRETESIMPRULES : ()]]