26,098 papers · page 156 of 1,305
Abstract This paper marries two state-of-the-art controller synthesis methods for partially observable Markov decision processes (POMDPs), a prominent model in sequential decision making under uncertainty. A central issue is to find a POMDP controller—that solely decides based on…
Abstract AWS IoT Events is an AWS service that makes it easy to respond to events from IoT sensors and applications.Detector modelsin AWS IoT Events enable customers to monitor their equipment or device fleets for failures or changes in operation and trigger actions when such eve…
Abstract We provide a novel method for sensitivity analysis of parametric robust Markov chains. These models incorporate parameters and sets of probability distributions to alleviate the often unrealistic assumption that precise probabilities are available. We measure sensitivity…
Abstract We introduce Hyper2LTL, a temporal logic for the specification of hyperproperties that allows for second-order quantification over sets of traces. Unlike first-order temporal logics for hyperproperties, such as HyperLTL, Hyper2LTL can express complex epistemic properties…
Abstract We characterize all common notions of behavioral equivalence by one 6-dimensional energy game, where energies bound capabilities of an attacker trying to tell processes apart. The defender-winning initial credits exhaustively determine which preorders and equivalences fr…
Abstract The logical framework of Constrained Horn Clauses (CHC) models verification tasks from a variety of domains, ranging from verification of safety properties in transition systems to modular verification of programs with procedures. In this work we present Golem, a flexibl…
Abstract We present a specification language and a fully automated tool named AutoQ for verifying quantum circuits symbolically. The tool implements the automata-based algorithm from [14] and extends it with the capabilities for symbolic reasoning. The extension allows to specify…
Abstract Compositional verification, such as the technique of assume-guarantee reasoning (AGR), is to verify a property of a system from the properties of its components. It is essential to address the state explosion problem associated with model checking. However, obtaining the…
Abstract A rigorous formalization of desired system requirements is indispensable when performing any verification task. This often limits the application of verification techniques, as writing formal specifications is an error-prone and time-consuming manual task. To facilitate …
Abstract We show that interactive protocols between a prover and a verifier, a well-known tool of complexity theory, can be used in practice to certify the correctness of automated reasoning tools. Theoretically, interactive protocols exist for all $$\textsf {PSPACE}$$ PSPACE pro…
Abstract Legal properties involve reasoning about data values and time. Metric first-order temporal logic (MFOTL) provides a rich formalism for specifying legal properties. While MFOTL has been successfully used for verifying legal properties over operational systems via runtime …
Abstract Quantifier elimination (qelim) is used in many automated reasoning tasks including program synthesis, exist-forall solving, quantified SMT, Model Checking, and solving Constrained Horn Clauses (CHCs). Exact qelim is computationally expensive. Hence, it is often approxima…
Abstract We study partial quantifier elimination (PQE) for propositional CNF formulas with existential quantifiers. PQE is a generalization of quantifier elimination where one can limit the set of clauses taken out of the scope of quantifiers to a small subset of clauses. The app…
Abstract This paper describes , a tool for the verification of imperative programs. operates on an intermediate verification language called , with a formally-specified semantics based on smt, allowing the specification of both reachability and liveness properties. It integrates …
Abstract We apply and evaluate polynomial-time algorithms to compute two different normal forms of propositional formulas arising in verification. One of the normal form algorithms is presented for the first time. The algorithms compute normal forms and solve the word problem for…
Abstract Machine-learned systems are in widespread use for making decisions about humans, and it is important that they are fair, i.e., not biased against individuals based on sensitive attributes. We present runtime verification of algorithmic fairness for systems whose models a…
Abstract Petri nets are an established model of concurrency. A Petri net is terminating if for every initial marking there is a uniform bound on the length of all possible runs. Recent work on the termination of Petri nets suggests that, in general, practical models should termin…
Abstract Sequence theories are an extension of theories of strings with an infinite alphabet of letters, together with a corresponding alphabet theory (e.g. linear integer arithmetic). Sequences are natural abstractions of extendable arrays, which permit a wealth of operations in…
Abstract R2U2 is a modular runtime verification framework capable of monitoring sets of specifications in real time and in resource-constrained environments. Such environments demand that a runtime monitor be fast, easily integratable, accessible to domain experts, and have predi…
Abstract Existing dynamic partial order reduction (DPOR) algorithms scale poorly on concurrent data structure benchmarks because they visit a huge number of blocked executions due to spinloops. In response, we develop Awamoche, a sound, complete, and strongly optimal DPOR algorit…