| acc = r0 + refs, r0 = st[r -- fs '] .refval, st[r -- _type] .type ≤ ty, junkrefs(str, acc, fs .type, st), is_referencevalue(st[r -- fs ']), fs ' ∈ instfields(st[r -- _type] .type .class), is_obj(str, r, st), ∀ str, ty, st, sk, val. junkrefs(str, acc, ty, st) → junkrefs(str, acc, ty, st[jvmref -- sk, val]) ⊦ acc = [], r = jvmref, junkrefs(str, r ' + acc, ty, st[jvmref -- sk, val]) |
is_referencevalue(st[r -- fs ']), fs ' ∈ instfields(st[r -- _type] .type .class), is_obj(str, r, st), st[r -- _type] .type ≤ ty, junkrefs(str, st[r -- fs '] .refval ' + refs, fs .type, st), ∀ str0, ty0, st0, sk0, val0. junkrefs(str0, st[r -- fs '] .refval ' + refs, ty0, st0) → junkrefs(str0, st[r -- fs '] .refval ' + refs, ty0, st0[jvmref -- sk0, val0]) ⊦ r = jvmref, junkrefs(str, r ' + st[r -- fs '] .refval ' + refs, ty, st[jvmref -- sk, val])
[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1], [CSIMPSEQ : ⊦ r ' + refs ≠ []], [CSIMPSEQ : ⊦ r + refs = r ' + refs])]]