Computer Aided Verification: 35th International Conference, CAV 2023, Paris, France, July 17–22, 2023, Proceedings, Part I

This open access proceedings set constitutes the refereed proceedings of the 35th International Conference on Computer Aided Verification, CAV 2023, which was held in Paris, France, in July 2023. .

Intro -- Preface -- Organization -- Invited Talks -- Privacy-Preserving Automated Reasoning -- Enhancing Programming Experiences Using AI: Leveraging LLMs as Analogical Reasoning Engines and Beyond -- Verified Software Security Down to Gates -- Contents - Part I -- Contents - Part II -- Contents - Part III -- Automata and Logic -- Active Learning of Deterministic Timed Automata with Myhill-Nerode Style Characterization -- 1 Introduction -- 2 Preliminaries -- 2.1 Timed Words and Timed Automata -- 2.2 Recognizable Timed Languages -- 2.3 Distinguishing Extensions and Active DFA Learning -- 3 A Myhill-Nerode Style Characterization of Recognizable Timed Languages with Elementary Languages -- 4 Active Learning of Deterministic Timed Automata -- 4.1 Successors of Simple Elementary Languages -- 4.2 Timed Observation Table for Active DTA Learning -- 4.3 Counterexample Analysis -- 4.4 L*-Style Learning Algorithm for DTAs -- 4.5 Learning with a Normal Teacher -- 4.6 Complexity Analysis -- 5 Experiments -- 5.1 RQ1: Scalability with Respect to the Language Complexity -- 5.2 RQ2: Performance on Practical Benchmarks -- 6 Conclusions and Future Work -- References -- Automated Analyses of IOT Event Monitoring Systems -- 1 Introduction -- 2 Overview -- 3 Technique -- 3.1 Well-formedness Properties -- 4 Experiments -- 5 Conclusion -- A Common Issues with Detector Models -- References -- Learning Assumptions for Compositional Verification of Timed Automata -- 1 Introduction -- 2 Preliminaries -- 2.1 Timed Automata -- 2.2 Learning Deterministic One-Clock Timed Automata -- 3 Framework for Learning-Based Compositional Verification of Timed Automata -- 3.1 Verification Framework via Assumption Learning -- 3.2 Model Conversion -- 3.3 Membership Queries -- 3.4 Candidate Queries -- 3.5 Correctness and Termination -- 4 Optimization Methods.

4.1 Using Additional Information -- 4.2 Minimizing the Alphabet of the Assumption -- 5 Experimental Results -- 6 Conclusion -- References -- Online Causation Monitoring of Signal Temporal Logic -- 1 Introduction -- 2 Preliminaries -- 2.1 Signal Temporal Logic -- 2.2 Classic Online Monitoring of STL -- 3 Boolean Causation Online Monitor -- 4 Quantitative Causation Online Monitor -- 5 Experimental Evaluation -- 5.1 Experiment Setting -- 5.2 Evaluation -- 6 Related Work -- 7 Conclusion and Future Work -- References -- Process Equivalence Problems as Energy Games -- 1 Introduction -- 2 Distinctions and Equivalences in Transition Systems -- 2.1 Transition Systems and Hennessy-Milner Logic -- 2.2 Price Spectra of Behavioral Equivalences -- 3 An Energy Game of Distinguishing Capabilities -- 3.1 Energy Games -- 3.2 The Spectroscopy Energy Game -- 3.3 Correctness: Tight Distinctions -- 3.4 Becoming More Clever by Looking One Step Ahead -- 4 Computing Equivalences -- 4.1 Computation of Attacker Winning Budgets -- 4.2 Complexity and How to Flatten It -- 4.3 Equivalences and Distinguishing Formulas from Budgets -- 5 Exploring Minimizations -- 6 Conclusion and Related Work -- References -- Concurrency -- Commutativity for Concurrent Program Termination Proofs -- 1 Introduction -- 2 Preliminaries -- 2.1 Concurrent Programs -- 2.2 Termination -- 2.3 Commutativity and Traces -- 3 Closures and Reductions -- 3.1 The Compromise: A New Proof Rule -- 3.2 Omega Prefix Generalization -- 4 Finite-Word Reductions -- 4.1 Efficient Reduction to Safety -- 4.2 Sound Finite Word Reductions -- 5 Omega Regular Reductions -- 6 Experimental Results -- 7 Related Work -- 8 Conclusion -- References -- Fast Termination and Workflow Nets -- 1 Introduction -- 2 Preliminaries -- 2.1 (Integer) Linear Programs -- 2.2 Petri Nets -- 2.3 Workflow Nets -- 2.4 Termination Complexity.

3 A Dichotomy of Termination Time in Workflow Nets -- 4 Refining Termination Time -- 5 Soundness in Terminating Workflow Nets -- 6 Termination Time and Concurrent Semantics -- 7 Experimental Evaluation -- 7.1 Benchmark Suite -- 7.2 Termination and Deadlocks -- 7.3 aN, MinTimeN(1) and MaxTimeN(1) -- 7.4 1-Soundness -- References -- Lincheck: A Practical Framework for Testing Concurrent Data Structures on JVM -- 1 Introduction -- 2 Lincheck Overview -- 2.1 Phase 1: Scenario Generation -- 2.2 Phase 2: Scenario Running -- 2.3 Phase 3: Verification of Outcome Results -- 3 Evaluation -- 4 Related Work -- 5 Discussion -- References -- nekton: A Linearizability Proof Checker -- 1 Introduction -- 2 Input -- 2.1 Proof Outlines -- 3 Case Study -- 4 Correctness and Implementation -- References -- Overcoming Memory Weakness with Unified Fairness -- 1 Introduction -- 2 Modelling Concurrent Programs -- 2.1 Labelled Transition Systems -- 2.2 Concurrent Programs -- 2.3 Concurrent Programs as Labelled Transition Systems -- 3 A Unified Framework for Weak Memory Models -- 3.1 Message Structures -- 3.2 Ensuring Consistency of Executions -- 3.3 Instantiating the Framework -- 4 Fairness Properties -- 4.1 Transition and Memory Fairness -- 4.2 Probabilistic Memory Fairness -- 4.3 Relating Fairness Notions -- 5 Applying Fairness Properties to Decision Problems -- 5.1 Deciding Repeated Control State Reachability -- 5.2 Quantitative Control State Repeated Reachability -- 5.3 Adapting Subroutines to Our Memory Framework -- 6 Related Work -- 7 Conclusion, Future Work, and Perspective -- References -- Rely-Guarantee Reasoning for Causally Consistent Shared Memory -- 1 Introduction -- 2 Motivating Example -- 3 Preliminaries: Syntax and Semantics -- 4 Generic Rely-Guarantee Reasoning -- 5 Potential-Based Memory System for SRA -- 6 Program Logic -- 7 Examples.

8 Discussion, Related and Future Work -- References -- Unblocking Dynamic Partial Order Reduction -- 1 Introduction -- 2 DPOR and Blocked Executions -- 2.1 Dynamic Partial Order Reduction -- 2.2 Assume Statements and DPOR -- 3 Key Ideas -- 3.1 Avoiding Blocking Due to Stale Reads -- 3.2 Handling Await Loops with In-Place Revisits -- 3.3 Handling Confirmation CASes with Speculative Revisits -- 4 Await-Aware Model Checking Algorithm -- 4.1 Execution Graphs -- 4.2 Awamoche -- 5 Correctness and Optimality -- 5.1 Approaches to Correctness -- 5.2 Awamoche: Completeness, Optimality, and Strong Optimality -- 6 Evaluation -- 6.1 Results -- 7 Related Work -- 8 Conclusion -- References -- Cyber-Physical and Hybrid Systems -- 3D Environment Modeling for Falsification and Beyond with Scenic 3.0 -- 1 Introduction -- 2 New Features -- 2.1 3D Geometry -- 2.2 Mesh Shapes and Regions -- 2.3 Precise Visibility Model -- 2.4 Temporal Requirements -- 2.5 Rewritten Parser -- 3 Case Studies -- 3.1 Falsification of a Robot Vacuum -- 3.2 Constrained Data Generation for an Autonomous Vehicle -- 4 Conclusion -- References -- A Unified Model for Real-Time Systems: Symbolic Techniques and Implementation -- 1 Introduction -- 2 Generalized timed automata -- 3 Expressivity of GTA and Examples -- 4 The Reachability Problem for GTA -- 5 Symbolic Enumeration -- 6 Computing with GTA Zones Using Distance Graphs -- 7 Finiteness of the Simulation Relation -- 8 Experimental Evaluation -- 9 Conclusion -- References -- Closed-Loop Analysis of Vision-Based Autonomous Systems: A Case Study -- 1 Introduction -- 2 Autonomous Center-Line Tracking with TaxiNet -- 3 Probabilistic Analysis -- 3.1 Probabilistic Abstractions for Perception -- 3.2 DNN Checks as Run-Time Guards -- 3.3 Confidence Analysis -- 4 Experiments -- 5 Conclusion -- References.

Hybrid Controller Synthesis for Nonlinear Systems Subject to Reach-Avoid Constraints -- 1 Introduction -- 1.1 Related Works -- 2 Preliminaries -- 3 Hybrid Polynomial-DNN Controllers Training -- 3.1 Training Well-Performing DNN Controllers Using RL -- 3.2 Polynomial Approximation -- 3.3 Training the Residual Controller -- 4 Reach-Avoid Verification with Lyapunov-Like Functions and Barrier Certificates Generation -- 4.1 Constructing Polynomial Simulations of the Controller Network -- 4.2 Producing Barrier Certificate and Lyapunov-Like Function -- 5 Experiments -- 6 Conclusion -- References -- Safe Environmental Envelopes of Discrete Systems -- 1 Introduction -- 2 Motivating Example -- 3 Modeling Formalism -- 4 Robustness Against Environmental Deviations -- 4.1 Deviations -- 4.2 Comparing Deviations -- 4.3 Robustness -- 4.4 Problem Statement -- 4.5 Comparing Robustness -- 5 Computing Robustness -- 5.1 Brute-Force Algorithm -- 5.2 Controlling the Deviations Without Environmental Constraints -- 5.3 Controlling the Deviations with Environmental Constraints -- 6 Case Studies -- 6.1 Implementation -- 6.2 Therac-25 -- 6.3 Voting -- 6.4 Oyster -- 6.5 PCA Pump -- 6.6 Results and Discussion -- 7 Related Work -- 8 Conclusion -- References -- Verse: A Python Library for Reasoning About Multi-agent Hybrid System Scenarios -- 1 Introduction -- 2 Overview of Verse -- 3 Scenarios in Verse -- 4 Verse Scenario to Hybrid Verification -- 5 Experiments and Use Cases -- 6 Related Work -- 7 Conclusions and Future Directions -- References -- Synthesis -- Counterexample Guided Knowledge Compilation for Boolean Functional Synthesis -- 1 Introduction -- 2 A Motivating Example -- 3 Preliminaries and Notation -- 4 A New Knowledge Representation for Skolem Functions -- 5 Towards Synthesizing the Skolem Basis Vector -- 6 Counterexample-Guided Rectification.