NASA Formal Methods

This book constitutes the proceedings of the 13th International Symposium on NASA Formal Methods, NFM 2021, held virtually in May 2021. The 21 full and 3 short papers presented in this volume were carefully reviewed and selected from 66 submissions. The papers aim to identify challenges and provide solutions to achieve assurance in mission-critical and safety-critical systems. Examples of such systems include advanced separation assurance algorithms for aircraft, next-generation air transportation, autonomous rendezvous and docking of spacecraft, on-board software for unmanned aerial systems (UAS), UAS traffic management, autonomous robots, and systems for fault detection, diagnosis, and prognostics.

Inhalt
Balancing Wind and Batteries: Towards Predictive Verification of Smart Grids.- nnenum: Verification of ReLU Neural Networks with Optimized Abstraction Refinement.- Minimum-Violation Traffic Management for Urban Air Mobility.- Integrating Formal Verification and Assurance: An Inspection Rover Case Study.- Towards verifying SHA256 in OpenSSL with the Software Analysis Workbench.- Polygon Merge: A Geometric Algorithm Verified Using PVS.- Program Sketching using Lifted Analysis for Numerical Program Families.- Specification Decomposition for Reactive Synthesis.- On Symmetry and Quantification: A New Approach to Verify Distributed Protocols.- Integrating Runtime Verification into a Sounding Rocket Control System.- Verification of Functional Correctness of Code Diversi cation Techniques.- Scalable Reliability Analysis by Lazy Verification.- Robustifying Controller Specifications of Cyber-Physical Systems Against Perceptual Uncertainty.- Good fences make good neighbors: Using formally verified safe trajectories to design a predictive geofence algorithm.- Online Shielding for Stochastic Systems.- Verification of Eventual Consensus in Synod Using a Failure-Aware Actor Model.- An Infrastructure for Faithful Execution of Remote Attestation Protocols.- Verifying min-plus Computations with Coq.- Efficient Verification of Optimized Code: Correct High-speed X25519.- A formal proof of the Lax equivalence theorem for finite difference schemes.- Recursive Variable-Length State Compression for Multi-Core Software Model Checking.- Runtime Verification of Generalized Test Tables.- Quasi-Equal Clock Reduction On-the-Fly.- On the Effectiveness of Signal Rescaling in Hybrid System Falsification.