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Introduction: The state of the art in termination analysis includes advanced techniques developed for logic and functional programming [12, 4, 9, 11, 10] and imperative languages [2, 5, 8, 6, 10], as well as for term rewriting systems [10]. In [6, 5] tools for proving termination of large industrial code are presented. However , termination of low-level(More)
Cost analysis of Java bytecode is complicated by its unstruc-tured control flow, the use of an operand stack and its object-oriented programming features (like dynamic dispatching). This paper addresses these problems and develops a generic framework for the automatic cost analysis of sequential Java bytecode. Our method generates cost relations which(More)
Cost analysis statically approximates the cost of programs in terms of their input data size. This paper presents, to the best of our knowledge, the first approach to the automatic cost analysis of Object-Oriented bytecode programs. In languages such as Java and C#, analyzing bytecode has a much wider application area than analyzing source code since the(More)
The classical approach to automatic cost analysis consists of two phases. Given a program and some measure of cost, we first produce recurrence relations (RRs) which capture the cost of our program in terms of the size of its input data. Second, we convert such RRs into closed form (i.e., without recurrences). Whereas the first phase has received(More)
costa is a static analyzer for Java bytecode which is able to infer cost and termination information for large classes of programs. The analyzer takes as input a program and a resource of interest, in the form of a cost model, and aims at obtaining an upper bound on the execution cost with respect to the resource and at proving program termination. The(More)
The classical approach to automatic cost analysis consists of two phases. Given a program and some measure of cost, the analysis first produces cost relations (CRs), i.e., recursive equations which capture the cost of the program in terms of the size of its input data. Second, CRs are converted into closed-form, i.e., without recurrences. Whereas the first(More)
This paper describes the architecture of costa, an abstract interpretation based cost and termination analyzer for Java bytecode. The system receives as input a bytecode program, (a choice of) a resource of interest and tries to obtain an upper bound of the resource consumption of the program. costa provides several non-trivial notions of cost, as the(More)
We investigate an extension of a lazy functional logic language , which uses term disequations both in programs and in computed answers. The semantic properties of the language are derived from the fact that it can be viewed as an instance of the CFLP(X)-scheme proposed in Lo92] for constraint functional logic programming. In particular , the operational(More)
Automatic cost analysis has interesting applications in the context of verification and certification of mobile code. For instance, the code receiver can use cost information in order to decide whether to reject mobile code which has too large cost requirements in terms of computing resources (in time and/or space) or billable events (SMSs sent, bandwidth(More)