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Proof step 69 from proof junkref-class-01 (previous step)

∃ fs. fs ' ∈ instfields(st[r -- _type] .type .class) ∧ (is_reftype(fs .type) ∨ fs .type = abstract_type) ∧ st[r -- fs '] .refval ≠ jvmref ∧ (¬ is_referencevalue(st[r -- fs ']) ∨ ¬ st[st[r -- fs '] .refval -- _type] .type ≤ fs .type ∨ junkref(str, st[r -- fs '] .refval, st)), is_obj(str, r, st) ⊦ ∃ refs. refs ≠ [] ∧ refs .first = r ∧ junkrefs(str, refs, st[refs .first -- _type] .type, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 68:
fs ' ∈ instfields(st[r -- _type] .type .class), is_obj(str, r, st), is_referencevalue(st[r -- fs ']), is_reftype(fs .type) ∨ fs .type = abstract_type, junkref(str, st[r -- fs '] .refval, st) ∨ ¬ st[st[r -- fs '] .refval -- _type] .type ≤ fs .type ⊦ st[r -- fs '] .refval = jvmref, ∃ refs. refs ≠ [] ∧ refs .first = r ∧ junkrefs(str, refs, st[refs .first -- _type] .type, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ¬ is_referencevalue(val) → val .refval = jvmref])]]