Abstract
We focus on synthesis techniques for transforming existing fault-intolerant real-time programs to fault-tolerant programs that provide phased recovery. A fault-tolerant program is one that satisfies its safety and liveness specifications as well as timing constraints in the presence of faults. We argue that in many commonly considered programs (especially in mission-critical systems), when faults occur, simple recovery to the program’s normal behavior is necessary, but not sufficient. For such programs, it is necessary that recovery is accomplished in a sequence of phases, each ensuring that the program satisfies certain properties. In this paper, we show that, in general, synthesizing fault-tolerant real-time programs that provide bounded-time phased recovery is NP-complete. We also characterize a sufficient condition for cases where synthesizing fault-tolerant real-time programs that provide bounded-time phased recovery can be accomplished in polynomial-time in the size of the input program’s region graph.
This work was partially sponsored by NSF CAREER CCR-0092724 and ONR Grant N00014-01-1-0744.
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Alur, R., Dill, D.: A theory of timed automata. Theoretical Computer Science 126(2), 183–235 (1994)
Alur, R., Henzinger, T.A.: Real-Time System = Discrete System + Clock Variables. International Journal on Software Tools for Technology Transfer 1(1-2), 86–109 (1997)
Asarin, E., Maler, O.: As soon as possible: Time optimal control for timed automata. In: Hybrid Systems: Computation and Control (HSCC), pp. 19–30 (1999)
Asarin, E., Maler, O., Pnueli, A., Sifakis, J.: Controller synthesis for timed automata. In: IFAC Symposium on System Structure and Control, pp. 469–474 (1998)
Alpern, B., Schneider, F.B.: Defining liveness. Information Processing Letters 21, 181–185 (1985)
Bouyer, P., D’Souza, D., Madhusudan, P., Petit, A.: Timed control with partial observability. In: Computer Aided Verification (CAV), pp. 180–192 (2003)
Bonakdarpour, B., Kulkarni, S.S.: Automated Incremental Synthesis of Timed Automata. In: Brim, L., Haverkort, B.R., Leucker, M., van de Pol, J. (eds.) FMICS 2006 and PDMC 2006. LNCS, vol. 4346, pp. 261–276. Springer, Heidelberg (2007)
Bonakdarpour, B., Kulkarni, S.S.: Incremental Synthesis of Fault-Tolerant Real-Time Programs. In: Datta, A.K., Gradinariu, M. (eds.) SSS 2006. LNCS, vol. 4280, pp. 122–136. Springer, Heidelberg (2006)
Bonakdarpour, B., Kulkarni, S.S.: Exploiting symbolic techniques in automated synthesis of distributed programs with large state space. In: IEEE International Conference on Distributed Computing Systems (ICDCS), pp. 3–10 (2007)
de Alfaro, L., Faella, M., Henzinger, T.A., Majumdar, R., Stoelinga, M.: The element of surprise in timed games. In: International Conference on Concurrency Theory (CONCUR) (2003)
D’Souza, D., Madhusudan, P.: Timed control synthesis for external specifications. In: Symposium on Theoretical Aspects of Computer Science (STACS), pp. 571–582 (2002)
Faella, M., LaTorre, S., Murano, A.: Dense real-time games. In: Logic in Computer Science (LICS), pp. 167–176 (2002)
Henzinger, T.A.: Sooner is safer than later. Information Processing Letters 43(3), 135–141 (1992)
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Bonakdarpour, B., Kulkarni, S.S. (2008). Masking Faults While Providing Bounded-Time Phased Recovery. In: Cuellar, J., Maibaum, T., Sere, K. (eds) FM 2008: Formal Methods. FM 2008. Lecture Notes in Computer Science, vol 5014. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-68237-0_26
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DOI: https://doi.org/10.1007/978-3-540-68237-0_26
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