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Proof step 31 from proof unchanged-rec-generic (previous step)

unchanged(str, r, st, st0) ∧ sk ∈ instfields(st[r -- _type] .type .class) ∧ is_obj(str, r, st) ∧ is_referencevalue(st[r -- sk]) ∧ r ≠ jvmref ∧ (st[r -- sk] .refval ≠ jvmref → st[st[r -- sk] .refval -- _type] .type ≤ sk .fs .type ∧ is_valid_ref(str, st[r -- sk] .refval, st)) → unchanged(str, st[r -- sk] .refval, st, st0), st[r -- sk] = refval(r0), unchanged(str, r, st, st0), is_classtype(st[r -- _type] .type) → sk ∈ instfields(st[r -- _type] .type .class), is_arraytype(st[r -- _type] .type) → is_indexkey(sk) ∧ 0 ≤ sk .index ∧ sk .index < st[r -- _length] .intval ⊦ r = jvmref, unchanged(str, r0, st, st0), junkref(str, r, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 30:
st[r -- sk] = refval(r0), unchanged(str, r, st, st0), is_arraytype(st[r -- _type] .type) → is_indexkey(sk) ∧ 0 ≤ sk .index ∧ sk .index < st[r -- _length] .intval, is_classtype(st[r -- _type] .type) → sk ∈ instfields(st[r -- _type] .type .class) ⊦ r = jvmref, junkref(str, r, st), unchanged(str, r0, st, st0), sk ∈ instfields(st[r -- _type] .type .class) ∧ is_obj(str, r, st) ∧ (r0 ≠ jvmref → st[r0 -- _type] .type ≤ sk .fs .type ∧ is_valid_ref(str, r0, st))

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPNAMEDSEQ : javavalue, , sel-09, ⊦ refval(r) .refval = r], [CSIMPNAMEDSEQ : javavalue, , test-19, ⊦ is_referencevalue(refval(r))])]]