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Proof step 39 from proof validrefs-put-notin-01 (previous step)

is_obj(str, r1, st[r -- mkfs(class, ty1, fieldvar) ', val]) ∧ (st[r -- mkfs(class, ty1, fieldvar) ', val][r1 -- _type]) .type ≤ ty, acc + r0 ' = r4 ' + refs, st[r1 -- _type] .type ≤ ty, okval(val, ty1), r -- mkfs(class, ty1, fieldvar) ' ∈ st, okval(st[r -- mkfs(class, ty1, fieldvar) '], ty1), r ∈ st, is_obj(str, r1, st), ∀ r2, fs0, val0, st0, str0, r3, ty0. ¬ r2 ∈ acc ∧ fs0 ' ≠ _type ∧ fs0 ' ≠ _length ∧ okval(val0, fs0 .type) ∧ r2 -- fs0 ' ∈ st0 ∧ okval(st0[r2 -- fs0 '], fs0 .type) → (validrefs(str0, acc + r3 ', ty0, st0[r2 -- fs0 ', val0]) ↔ validrefs(str0, acc + r3 ', ty0, st0)) ⊦ r = r1, r1 = jvmref, mkfs(class, ty1, fieldvar) ' = _length, mkfs(class, ty1, fieldvar) ' = _type, acc + r0 ' = [] ∨ (∃ fs. fs ' ∈ instfields((st[r -- mkfs(class, ty1, fieldvar) ', val][r1 -- _type]) .type .class) ∧ is_referencevalue(st[r -- mkfs(class, ty1, fieldvar) ', val][r1 -- fs ']) ∧ (acc + r0 ') .first = (st[r -- mkfs(class, ty1, fieldvar) ', val][r1 -- fs ']) .refval ∧ validrefs(str, acc + r0 ', fs .type, st[r -- mkfs(class, ty1, fieldvar) ', val])) ↔ (∃ fs. fs ' ∈ instfields(st[r1 -- _type] .type .class) ∧ is_referencevalue(st[r1 -- fs ']) ∧ r4 = st[r1 -- fs '] .refval ∧ validrefs(str, st[r1 -- fs '] .refval ' + refs, fs .type, st)), r ∈ acc, r0 ≠ r4 ∧ ¬ r0 ∈ refs, ¬ r4 ∈ acc ∧ r4 ≠ r0

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 38:
acc + r0 ' = r4 ' + refs, is_obj(str, r1, st), r ∈ st, okval(st[r -- mkfs(class, ty1, fieldvar) '], ty1), r -- mkfs(class, ty1, fieldvar) ' ∈ st, okval(val, ty1), st[r1 -- _type] .type ≤ ty, ∀ r2, fs0, val0, st0, str0, r3, ty0. ¬ r2 ∈ acc ∧ fs0 ' ≠ _type ∧ fs0 ' ≠ _length ∧ okval(val0, fs0 .type) ∧ r2 -- fs0 ' ∈ st0 ∧ okval(st0[r2 -- fs0 '], fs0 .type) → (validrefs(str0, acc + r3 ', ty0, st0[r2 -- fs0 ', val0]) ↔ validrefs(str0, acc + r3 ', ty0, st0)) ⊦ mkfs(class, ty1, fieldvar) ' = _type, mkfs(class, ty1, fieldvar) ' = _length, r1 = jvmref, r = r1, (∃ fs. fs ' ∈ instfields(st[r1 -- _type] .type .class) ∧ is_referencevalue(st[r1 -- fs ']) ∧ r4 = st[r1 -- fs '] .refval ∧ validrefs(str, st[r1 -- fs '] .refval ' + refs, fs .type, st[r -- mkfs(class, ty1, fieldvar) ', val])) ↔ (∃ fs. fs ' ∈ instfields(st[r1 -- _type] .type .class) ∧ is_referencevalue(st[r1 -- fs ']) ∧ r4 = st[r1 -- fs '] .refval ∧ validrefs(str, st[r1 -- fs '] .refval ' + refs, fs .type, st)), r ∈ acc, ¬ r4 ∈ acc ∧ r4 ≠ r0, r0 ≠ r4 ∧ ¬ r0 ∈ refs

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (r ' + refs) .first = r], [CSIMPSEQ : ⊦ r ≠ r0 → ( is_obj (str, r0, st[r -- sk, val]) ↔ is_obj(str, r0, st))], [CSIMPSEQ : ⊦ r ≠ r0 → (st[r0 -- sk0, val][r -- sk]) = st[r -- sk]], [CSIMPSEQ : ⊦ sk ≠ sk0 → (st[r -- sk, val][r0 -- sk0]) = st[r0 -- sk0]], [CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1], [CSIMPSEQ : ⊦ r ' ≠ []], [CSIMPSEQ : ⊦ ¬ refs + refs0 ≠ [] ↔ refs = [] ∧ refs0 = []])]]