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Proof step 57 from proof unchanged-junkrefs-level (previous step)

is_obj(str, r, st) ∧ st[r -- _type] .type ≤ ty, st1[r -- _type] = st[r -- _type], is_obj(str, r, st1), is_valid_ref(str0, r, st1), st[r -- _type] .type ≤ ty, refs0 ≠ [] ∧ (∃ fs. fs ' ∈ instfields(st[r -- _type] .type .class) ∧ is_referencevalue(st[r -- fs ']) ∧ refs0 .first = st[r -- fs '] .refval ∧ junkrefs(str, refs0, fs .type, st)), unchanged(str0, r, st, st1), level⊆(str, str0), is_valid_ref(str0, r, st), unchangedNorec(r, st, st1), is_obj(str, r, st), ∀ str0, st, st1, str, ty. unchanged(str0, refs0 .first, st, st1) ∧ junkrefs(str, refs0, ty, st) ∧ level⊆(str, str0) → junkrefs(str, refs0, ty, st1), ∀ r0. (path∃(str0, r, r0, st) ↔ path∃(str0, r, r0, st1)) ∧ (path∃(str0, r, r0, st) → unchangedNorec(r0, st, st1)) ⊦ r = jvmref, refs0 ≠ [] ∧ (∃ fs. fs ' ∈ instfields(st[r -- _type] .type .class) ∧ is_referencevalue(st1[r -- fs ']) ∧ refs0 .first = st1[r -- fs '] .refval ∧ junkrefs(str, refs0, fs .type, st1))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]