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Proof step 19 from proof cyclic-put-badclassfield (previous step)

is_classtype(st[r0 -- _type] .type), validrefs(str, (r2 ' + refs1) + r1 ', st[r2 -- _type] .type, st) ⊦ fs ' = _type, junkref(str, r2, st), fs ' ∈ instfields(st[r0 -- _type] .type .class), dups(refs1), r2 ∈ refs1, r1 ≠ r2 ∧ ¬ r1 ∈ refs1, ¬ dups(r2 ' + refs1) ∧ r1 ∈ r2 ' + refs1 ∧ (r2 ' + refs1) .first = r2 ∧ validrefs(str, (r2 ' + refs1) + r1 ', st[(r2 ' + refs1) .first -- _type] .type, st[r0 -- fs ', val])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 18:
is_classtype(st[r0 -- _type] .type), validrefs(str, (r2 ' + refs1) + r1 ', st[r2 -- _type] .type, st) ⊦ fs ' = _type, junkref(str, r2, st), fs ' ∈ instfields(st[r0 -- _type] .type .class), dups(refs1), r2 ∈ refs1, r1 ≠ r2 ∧ ¬ r1 ∈ refs1, (r1 = r2 ∨ r1 ∈ refs1) ∧ validrefs(str, (r2 ' + refs1) + r1 ', st[r2 -- _type] .type, st[r0 -- fs ', val])

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (r ' + refs) .first = r], [CSIMPSEQ : ⊦ ¬ r ∈ r0 ' + refs ↔ r ≠ r0 ∧ ¬ r ∈ refs], [CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1], [CSIMPSEQ : ⊦ ¬ r ∈ refs → (dups(r ' + refs) ↔ dups(refs))])]]