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Proof step 42 from proof validrefs-addobj (conclusion)

⊦ ¬ validrefs(str, refs, ty, st) ∧ ¬ r ∈ refs → ¬ validrefs(str, refs, ty, addobj(r, class, fis, st))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 41:
validrefs(str, refs, ty, addobj(r, class, fis, st)) ⊦ validrefs(str, refs, ty, st), r ∈ refs

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]