This paper addresses the need to analyze and validate the architectural requirements of complex systems-of-systems early in the development process. We present an iterative rapid prototyping process for studying the temporal behavior of the system-of-systems architecture via object-oriented architectural models expressed in UML-RT (UML for Real-Time extension) augmented with formal specificatio...

The accuracy levels achieved by state-of-the-art Speaker Verification systems are high enough for the technology to be used in real-life applications. Unfortunately, the transfer from the lab to the field is not as straight-forward as could be: the best performing systems can be computationally expensive to run and need large speaker model footprints. In this paper, we compare two speaker verif...

In this paper, we describe a hybrid bitand word-level representation called Linear Taylor Expansion Diagram (LTED) [1]. This representation not only has a compact and canonical form, but also is close to hardware-software descriptions so that it can be utilized as a formal model for formal verification and synthesis. The power of abstraction of LTED allows us to represent system level of hardwa...

This paper describes a secure and memory-efficient embedded fingerprint verification system. It shows how a fingerprint verification module originally developed to run on a workstation can be transformed and optimized in a systematic way to run real-time on an embedded device with limited memory and computation power. A complete fingerprint recognition module is a complex application that requi...

BLAST is an automatic verification tool for checking temporal safety properties of C programs. Given a C program and a temporal safety property, BLAST either statically proves that the program satisfies the safety property, or provides an execution path that exhibits a violation of the property (or, since the problem is undecidable, does not terminate). BLAST constructs, explores, and refines a...

We extend a previously proposed symbolic model transformation property prover for the DSLTrans transformation language. The original prover generated the set of path conditions (i.e., symbolic transformation executions), and verified atomic contracts (constraints on inputoutput model relations) on these path conditions. The prover evaluated atomic contracts to yield either true or false for the...

Unified Parallel C (UPC) is a language used to write parallel programs for shared and distributed memory parallel computers. Deadlock detection in UPC programs requires detecting deadlocks that involve either locks, collective operations, or both. In this paper, a distributed deadlock detection algorithm for UPC programs that uses run-time analysis is presented. The algorithm detects deadlocks ...