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The problem of counting satisfiability, i.e. count the number of satisfying assignments for a SAT problem, is used successfully in a number of problems. For example, it can provide heuristics for guiding planning and search, where an estimation of the probability for a given search would help lead to a goal. Counting satisfiability is a valuable approach for problems like constraint satisfaction,...
The schedulability analysis problem for many realistic task models is known to be hard (NP or coNP). As this severely restricts the application of these task models, recently there has been a considerable amount of interest in relaxed or approximate notions of schedulability, with the hope that they can be checked more efficiently. In this paper we introduce yet another natural notion of relaxed schedulability,...
The scheduling problem answers the question whether a given set of input tasks is feasible. It has been studied since the 1970s and many important results have been revealed to the scientific community. This paper presents an implementation tool, PEARLS, i.e., Pliable EArliest Deadline First, Rate Monotonic, Least Laxity Schedulers, based on some of the most significant existing schedulability analytical...
Real-time logic (RTL) is useful for the verification of a safety assertion SA with respect to the specification SP of a real-time system. Since the satisfiability problem for RTL is undecidable, there were many efforts to find proper heuristics for proving that SPrarrSA holds. However, none of such heuristics necessarily finds an "optimal implication". After verifying SPrarrSA, and the system...
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