Summary: Alternating Refinement Relations ?
Rajeev Alur 1 Thomas A. Henzinger 2 Orna Kupferman 2 Moshe Y. Vardi 3
1 Department of Computer and Information Science,
University of Pennsylvania, Philadelphia, PA 19104, U.S.A.
Email: email@example.com. URL: www.cis.upenn.edu/”alur.
2 Department of Electrical Engineering and Computer Sciences,
University of California, Berkeley, CA 947201770, U.S.A.
Email: ftah,firstname.lastname@example.org. URL: www.eecs.berkeley.edu/”ftah,ornag.
3 Department of Computer Science,
Rice University, Houston, TX 770051892, U.S.A.
Email: email@example.com. URL: http://www.cs.rice.edu/”vardi.
Abstract. Alternating transition systems are a general model for composite systems
which allow the study of collaborative as well as adversarial relationships between
individual system components. Unlike in labeled transition systems, where each tran
sition corresponds to a possible step of the system (which may involve some or all
components), in alternating transition systems, each transition corresponds to a possible
move in a game between the components. In this paper, we study refinement relations
between alternating transition systems, such as ``Does the implementation refine the set
A of specification components without constraining the components not in A?'' In par
ticular, we generalize the definitions of the simulation and trace containment preorders