Police free to bug surgeries

Designing bug-free protocols with SPIN

SPIN is an efficient, automated verification tool that can be used to design robust software for distributed systems in general, and bug-free communications protocols in particular. This paper outlines the use of the tool to address protocol design problems. As an example we consider the verification of a published protocol for implementing synchronous rendezvous operations in a distributed sys...

Bug Inducing Analysis to Prevent Fault Prone Bug Fixes

Bug fix is an important and challenging task in software development and maintenance. Bug fix is also a dangerous change, because it might induce new bugs. It is difficult to decide whether a bug fix is safe in practice. In this paper, we conducted an empirical study on bug inducing analysis to discover the types and features of fault prone bug fixes. We use a classical algorithm to track the l...

Bug Driven Bug Finders

We describe a method of creating tools to find bugs in software that is driven by the analysis of previously fixed bugs. We present a study of bug databases and software repositories that characterize commonly occurring types of bugs. Based on the types of bugs that were commonly reported and fixed in the code, we determine what types of bug finding tools should be developed. We have implemente...

Demo Abstract: Towards Bug-free Implementations for Wireless Sensor Networks

Developing Bug-Free Machine Learning Systems With Formal Mathematics

Noisy data, non-convex objectives, model misspecification, and numerical instability can all cause undesired behaviors in machine learning systems. As a result, detecting actual implementation errors can be extremely difficult. We demonstrate a methodology in which developers use an interactive proof assistant to both implement their system and to state a formal theorem defining what it means f...