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Proof step 57 from proof validrefs-all-same (previous step)

ty = mkclasstype(class1), st[r -- mkfs(class, ty1, fieldvar) '] = refval(r1), st[r -- _type] = st0[r -- _type], st0[r -- _type] .type = mkclasstype(class0), is_obj(str, r, st), is_obj(str, r, st0), validrefs(str, r1 ' + refs, ty1, st), mkfs(class, ty1, fieldvar) ' ∈ instfields(class0), is_classtype(ty), class0 ≤ class1, ∀ r0. (r0 = r ∨ r0 = r1 ∨ r0 ∈ refs) ∧ r0 ≠ jvmref → st[r0 -- _type] = st0[r0 -- _type] ∧ (is_classtype(st[r0 -- _type] .type) → (∀ sk. sk ∈ instfields(st[r0 -- _type] .type .class) → st[r0 -- sk] = st0[r0 -- sk])) ∧ ( is_arraytype(st[r0 -- _type] .type) → st[r0 -- _length] = st0[r0 -- _length] ∧ (∀ i. ¬ i < 0 ∧ ¬ st[r0 -- _length] .intval ≤ i → st[r0 -- i '] = st0[r0 -- i '])), ∀ str0, ty0, st1, st2. validrefs(str0, r1 ' + refs, ty0, st1) ∧ (∀ r0. (r0 = r1 ∨ r0 ∈ refs) ∧ r0 ≠ jvmref → st1[r0 -- _type] = st2[r0 -- _type] ∧ (is_classtype(st1[r0 -- _type] .type) → (∀ sk. sk ∈ instfields(st1[r0 -- _type] .type .class) → st1[r0 -- sk] = st2[r0 -- sk])) ∧ ( is_arraytype(st1[r0 -- _type] .type) → st1[r0 -- _length] = st2[r0 -- _length] ∧ (∀ i. 0 ≤ i ∧ i < st1[r0 -- _length] .intval → st1[r0 -- i '] = st2[r0 -- i ']))) → validrefs(str0, r1 ' + refs, ty0, st2), ∀ sk. sk ∈ instfields(class0) → st[r -- sk] = st0[r -- sk] ⊦ r = jvmref, is_referencevalue(st0[r -- mkfs(class, ty1, fieldvar) ']) ∧ r1 = st0[r -- mkfs(class, ty1, fieldvar) '] .refval ∧ validrefs(str, st0[r -- mkfs(class, ty1, fieldvar) '] .refval ' + refs, ty1, st0)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 56:
st[r -- mkfs(class, ty1, fieldvar) '] = refval(r1), st[r -- _type] = st0[r -- _type], st0[r -- _type] .type = mkclasstype(class0), is_obj(str, r, st), is_obj(str, r, st0), validrefs(str, r1 ' + refs, ty1, st), mkfs(class, ty1, fieldvar) ' ∈ instfields(class0), class0 ≤ class1, ∀ r0. (r0 = r ∨ r0 = r1 ∨ r0 ∈ refs) ∧ r0 ≠ jvmref → st[r0 -- _type] = st0[r0 -- _type] ∧ (is_classtype(st[r0 -- _type] .type) → (∀ sk. sk ∈ instfields(st[r0 -- _type] .type .class) → st[r0 -- sk] = st0[r0 -- sk])) ∧ ( is_arraytype(st[r0 -- _type] .type) → st[r0 -- _length] = st0[r0 -- _length] ∧ (∀ i. ¬ i < 0 ∧ ¬ st[r0 -- _length] .intval ≤ i → st[r0 -- i '] = st0[r0 -- i '])), ∀ str0, ty0, st1, st2. validrefs(str0, r1 ' + refs, ty0, st1) ∧ (∀ r0. (r0 = r1 ∨ r0 ∈ refs) ∧ r0 ≠ jvmref → st1[r0 -- _type] = st2[r0 -- _type] ∧ (is_classtype(st1[r0 -- _type] .type) → (∀ sk. sk ∈ instfields(st1[r0 -- _type] .type .class) → st1[r0 -- sk] = st2[r0 -- sk])) ∧ ( is_arraytype(st1[r0 -- _type] .type) → st1[r0 -- _length] = st2[r0 -- _length] ∧ (∀ i. 0 ≤ i ∧ i < st1[r0 -- _length] .intval → st1[r0 -- i '] = st2[r0 -- i ']))) → validrefs(str0, r1 ' + refs, ty0, st2), ∀ sk. sk ∈ instfields(class0) → st[r -- sk] = st0[r -- sk] ⊦ r = jvmref, is_referencevalue(st0[r -- mkfs(class, ty1, fieldvar) ']) ∧ r1 = st0[r -- mkfs(class, ty1, fieldvar) '] .refval ∧ validrefs(str, st0[r -- mkfs(class, ty1, fieldvar) '] .refval ' + refs, ty1, st0)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1], [CSIMPSEQ : ⊦ is_classtype(mkclasstype(class))])]]