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The authors present a non-null annotations inferencer for the Java bytecode language. They previously proposed an analysis to infer non-null annotations and proved it soundness and completeness with respect to a state of the art type system. This paper proposes extensions to their former analysis in order to deal with the Java bytecode language. They have implemented both analyses and compared their behaviour on several benchmarks. The results show a substantial improvement in the precision and, despite being a whole-program analysis, production applications can be analyzed within minutes.
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