Pantazis Deligiannis

I am a Research Software Development Engineer at Microsoft Research in Cambridge, UK. I did my PhD at Imperial College London (viva pending), where I worked on scalable techniques for analysing and testing real-world asynchronous software systems. For my PhD thesis, I created P#, an asynchronous programming language that comes with built-in static analysis and controlled testing capabilities, which is now used in Microsoft by a number of engineers and researchers.


I am a key contributor / lead developer in the following projects:

  • [git] P#, a language that simplifies developing, analysing and testing asynchronous programs, such as web services and distributed systems.
  • [git] Whoop, a tool that (i) automatically analyses Linux device drivers for data races and (ii) exploits the race-related information to accelerate Microsoft's Corral, an industrial strength bug-finder for concurrent programs.
  • [git] lockpwn, a static lockset analyser for pthread C programs. This tool largely reuses the static lockset analysis and race checking APIs of Whoop, but applies the technique on pthreads instead of device drivers.
  • Dungeon Story, a Puzzle/RPG game that I developed (as a hobby project) during summer 2012. The game is available worldwide in the iOS App Store, it has been downloaded by more than 110,000 users, and has hundreds of 4.5/5 star ratings.

I have also contributed to the following projects:

  • [git] SMACK, a bounded software verifier for C programs.
  • [git] GPUVerify, a tool for formal analysis of GPU kernels written in OpenCL and CUDA.
  • [git] Boogie, an intermediate verification language.


Peer-reviewed publications:

  1. [pdf] Uncovering Bugs in Distributed Storage Systems During Testing (not in Production!), Pantazis Deligiannis, Matt McCutchen, Paul Thomson, Shuo Chen, Alastair F. Donaldson, John Erickson, Cheng Huang, Akash Lal, Rashmi Mudduluru, Shaz Qadeer and Wolfram Schulte. In the 14th USENIX Conference on File and Storage Technologies (FAST'16), pp. 249-262, 2016.
  2. [pdf] Fast and Precise Symbolic Analysis of Concurrency Bugs in Device Drivers, Pantazis Deligiannis, Alastair F. Donaldson and Zvonimir Rakamaric ́. In the 30th IEEE/ACM International Conference on Automated Software Engineering (ASE'15), pp. 166-177, 2015.
  3. [pdf] Asynchronous Programming, Analysis and Testing with State Machines, Pantazis Deligiannis, Alastair F. Donaldson, Jeroen Ketema, Akash Lal and Paul Thomson. In the 36th Annual ACM SIGPLAN Conference on Programming Language Design and Implementation (PLDI'15), pp. 154-164, 2015.
  4. [pdf] Automatic Verification of Data Race Freedom in Device Drivers, Pantazis Deligiannis and Alastair F. Donaldson. In the 4th Imperial College Computing Student Workshop (ICCSW'14), pp. 36-39, 2014.
  5. [website] Engineering a Static Verification Tool for GPU Kernels, Ethel Bardsley, Adam Betts, Nathan Chong, Peter Collingbourne, Pantazis Deligiannis, Alastair F. Donaldson, Jeroen Ketema, Daniel Liew and Shaz Qadeer. In the 26th International Conference on Computer Aided Verification (CAV'14), pp. 226-242, 2014.
  6. Haskell vs. F# vs. Scala: A High-level Language Features and Parallelism Support Comparison, Prabhat Totoo, Pantazis Deligiannis and Hans-Wolfgang Loidl. In the 1st ACM SIGPLAN Workshop on Functional High-Performance Computing (FHPC'12), pp. 49-60, 2012.
  7. Improving the Diagnosis of Mild Hypertrophic Cardiomyopathy with MapReduce, Pantazis Deligiannis, Hans-Wolfgang Loidl and Evangelia Kouidi. In the 3rd International Workshop on MapReduce and its Applications (MAPREDUCE'12), pp. 41-48, 2012.

I was honored to be selected as one of the 15 finalists in the UK ICT Pioneers 2015 competition by EPSRC for my work on P#. See this competition video describing my PhD work in three minutes.

Selected Talks.

About P# at:

  • USENIX FAST'16 (February 2016), Microsoft Research Cambridge (January 2016), Charles University in Prague (December 2015), Microsoft Research Cambridge (October 2015), Microsoft Research Redmond (August 2015), Microsoft Azure Storage (July 2015), PLDI'15 (June 2015), Microsoft Research Redmond (June 2015), Imperial College London (May 2015), University of Utah (March 2015).

About Whoop at:

  • Microsoft Research Cambridge (January 2016), ASE'15 (November 2015), Intel Hillsboro (June 2015), ICCSW'14 (September 2014).

Professional Activities.

I am serving (or have served) on the committee of:

I enjoyed visiting the following research labs:

  • D3S, Charles University - hosted by Pavel Parízek (December 2015).
  • SOAR Lab, School of Computing, University of Utah - hosted by Zvonimir Rakamarić (March 2015).


I love travelling. See where I have been.