| st ⊆ st1, newref(r, st), ∀ r0. path∃(str, r, r0, st1) → newref(r0, st) ∨ r0 = jvmref ⊦ r = jvmref, ∀ refs1, refs2. ¬ ( refs1 ≠ [] ∧ refs2 ≠ [] ∧ refs1 .first ∈ r1 ' + r ' ∧ refs2 .first ∈ r1 ' + r ' ∧ refs1 .first ≠ refs2 .first ∧ refs1 .last = refs2 .last ∧ refs1 .last ≠ jvmref ∧ validrefs(str, refs1, st1[refs1 .first -- _type] .type, st1) ∧ validrefs(str, refs2, st1[refs2 .first -- _type] .type, st1)), junkref(str, r1, st) |
refs0 .last = refs .last, validrefs(str, refs0, st1[refs0 .first -- _type] .type, st1), validrefs(str, refs, st1[refs .first -- _type] .type, st1), st ⊆ st1, newref(r, st), ∀ r0. path∃(str, r, r0, st1) → newref(r0, st) ∨ r0 = jvmref ⊦ r = jvmref, refs .last = jvmref, refs0 .first = refs .first, refs = [], refs0 = [], junkref(str, r1, st), refs0 .first ≠ r1 ∧ refs0 .first ≠ r, refs .first ≠ r1 ∧ refs .first ≠ r
[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1], [CSIMPSEQ : ⊦ r ∈ r0 ' ↔ r = r0], [CSIMPSEQ : ⊦ r ∈ refs + refs0 ↔ ¬ ¬ (r ∈ refs ∨ r ∈ refs0)])]]