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Proof step 28 from proof unchanged-fits (previous step)

st0[r -- _type] = st[r -- _type], st[r -- sk] = st0[r -- sk], fits(st0[r -- sk] .refval, sks0, st0), fits(st0[r -- sk] .refval, sks0, st), is_referencevalue(st0[r -- sk]), unchanged(str, r, st, st0), unchanged(str, st0[r -- sk] .refval, 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), junkref(str, st0[r -- sk] .refval, st), (is_arraytype(st0[r -- _type] .type) → ¬ is_fskey(sk) ∧ ¬ sk .index < 0 ∧ ¬ st0[r -- _length] .intval ≤ sk .index) ∧ (is_classtype(st0[r -- _type] .type) → sk ∈ instfields(st0[r -- _type] .type .class))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 27:
st[r -- sk] = st0[r -- sk], st0[r -- _type] = st[r -- _type], unchanged(str, st0[r -- sk] .refval, st, st0), unchanged(str, r, st, st0), is_referencevalue(st0[r -- sk]), fits(st0[r -- sk] .refval, sks0, st), fits(st0[r -- sk] .refval, sks0, st0), is_arraytype(st[r -- _type] .type), is_indexkey(sk), sk .index < st[r -- _length] .intval, st0[r -- _length] .intval ≤ sk .index, 0 ≤ sk .index, 0 < st[r -- _length] .intval, st0[r -- _length] .intval < st[r -- _length] .intval ⊦ r = jvmref, junkref(str, st0[r -- sk] .refval, st), junkref(str, r, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPNAMEDFORWARD : int-abs, , forward-le-01, ⊦ i ≤ j ∧ 0 ≤ i → 0 ≤ j], [CSIMPNAMEDFORWARD : int-abs, , forward-le-05, ⊦ i < j ∧ 0 ≤ i → 0 < j], [CSIMPNAMEDFORWARD : int-abs, , forward-lels, ⊦ i ≤ j ∧ j < j0 → i < j0], [CSIMPNAMEDSEQ : int-abs, , lels-04, ⊦ i ≤ j → (¬ ¬ j < i ↔ false)], [CSIMPNAMEDSEQ : storekey, , test-02, ⊦ is_indexkey(sk) → ¬ is_fskey(sk)], [CSIMPNAMEDSEQ : javatype, , diff-01, ⊦ is_arraytype(ty) → ¬ is_classtype(ty)])]]