| st[r -- _type] .type = mkclasstype(class0), mkfs(class, mkclasstype(class1), fieldvar) ' ∈ instfields(class0), is_valid_ref(str, r, st), class0 ≤ class1 ⊦ r = jvmref, dups(r ' + r ') ∧ (r ' + r ') .first = r ∧ validrefs (str, r ' + r ', st[(r ' + r ') .first -- _type] .type, st[(r ' + r ') .first -- mkfs(class, mkclasstype(class1), fieldvar) ', refval((r ' + r ') .first)]) |
st[r -- _type] .type = mkclasstype(class0), mkfs(class, mkclasstype(class1), fieldvar) ' ∈ instfields(class0), is_valid_ref(str, r, st), class0 ≤ class1 ⊦ r = jvmref, validrefs(str, r ' + r ', mkclasstype(class0), st[r -- mkfs(class, mkclasstype(class1), fieldvar) ', refval(r)])
[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (r ' + refs) .first = r], [CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1], [CSIMPSEQ : ⊦ r ∈ r0 ' ↔ r = r0], [CSIMPSEQ : ⊦ ¬ dups(r ')], [CSIMPSEQ : ⊦ dups(r ' + refs) ↔ dups(refs) ∨ r ∈ refs])]]