dReach: δ-Reachability Analysis for Hybrid Systems

  title={dReach: $\delta$-Reachability Analysis for Hybrid Systems},
  author={Soonho Kong and Sicun Gao and Wei Chen and Edmund M. Clarke},
  booktitle={International Conference on Tools and Algorithms for Construction and Analysis of Systems},
dReach is a bounded reachability analysis tool for nonlinear hybrid systems. It encodes reachability problems of hybrid systems to first-order formulas over real numbers, which are solved by delta-decision procedures in the SMT solver dReach. In this way, dReach is able to handle a wide range of highly nonlinear hybrid systems. It has scaled well on various realistic models from biomedical and robotics applications. 

Unbounded-time reachability analysis of hybrid systems by abstract acceleration

  • P. Schrammel
  • Computer Science
    2015 International Conference on Embedded Software (EMSOFT)
  • 2015
Linear dynamical systems are ubiquitous in hybrid systems, both as physical models or as software control modules. Therefore we need an unbounded-time reachability analysis that can cope with

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. Reachability analysis is a fundamental problem in verification that checks for a given model and set of initial states if the system will reach a given set of unsafe states. Its importance lies in

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The framework of delta-complete analysis for bounded reachability problems of general hybrid systems is presented and it is proved that the verification problems become much more mathematically tractable in this new framework.

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The procedure computes reachable sets for uncertain initial states and inputs in an overapproximative way, i.e. it is guaranteed that all possible trajectories of the system are enclosed, and can be used for formal verification of system properties that can be specified in the state space as unsafe or goal regions.

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We present a scalable reachability algorithm for hybrid systems with piecewise affine, non-deterministic dynamics. It combines polyhedra and support function representations of continuous sets to

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In this paper we describe the complete workflow of analyzing the dynamic behavior of safety-critical embedded systems with HySAT. HySAT is an arithmetic constraint solver with a tightly integrated

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  • H. AsadK. JonesF. Surre
  • Computer Science, Mathematics
    17th International Symposium on Design and Diagnostics of Electronic Circuits & Systems
  • 2014
This work uses SAT modulo ODE for Bounded Model Checking (BMC) of the non-linear hybrid automata and shows that the oscillator hybrid timed traces satisfy frequency domain specifications.