Software verification; Security; Logic and automata theory;
Programming Languages/Formal Methods/Software Engineering Group
Massively Empowered Classrooms (MEC)
, a hybrid MOOC model for Indian undergraduate education, in collaboration with Microsoft Research, India.
Current research Projects
My current research interests are primarily in software verification
and program synthesis
. The main approach that I currently believe in for automating software verification are centered aroud the synergy of two techniques: natural proofs
for solving logical reasoning required in verification and learning-based techniques
to synthesize invariants required for inductively proving programs correct.
My interest in program synthesis also centers around using learning algorithms to synthesize program expressions from various kinds of specification.
Natural proofs: sound techniques for undecidable problems in verification.
Natural proofs for reasoning with data-structures and dynamic heaps (see Dryad and VCDryad) (POPL 2012, PLDI 2013, PLDI 2014)
Natural proofs for correctness of distributed systems (OOPSLA 2014)
Invariant Generation, especially using machine learning (CAV 2013, SAS 2013, CAV 2014, POPL 2016).
Synthesis (NSF ExCAPE Expeditions)
Synthesis using learning
Synthesis for network design
Building reliable software: OS, browsers, etc. with proven security properties (ASPLOS 2013), proving properties of
Earlier research Projects
Decidable logics for reasoning with heaps/dynamic data structures (Strand)
Security of web browser extensions (VEX)
Testing concurrent programs (Penelope)
Security of access control (VAC)
Annotation and proof mechanisms for safe concurrency (Accord)
Model-checking abstractions of programs (Getafix)
Decidable automata models (See page on visibly pushdown automata)
VCDryad - An extension of VCC that provides sound but incomplete automatic
mechanisms against Dryad specifications, a dialect of separation logic.
Dryad - Sound but incomplete mechanism for proving heap-based programs correct
CAV 2013 tool - for learning universally quantified invariants on linear data-structures using quantified data automata
Strand - Decidable logics/SMT solver for reasoning with heaps
Getafix - A boolean model-checker for concurrent and recursive programs
VEX - Static analysis of web-browser extensions for security vulnerabilities
Penelope - A testing tool for concurrent programs
VAC - Verifier of Access Control
JIST - Java Interface Synthesis Tool
Students and Post-doctoral researchers:
Daniel Neider (automated deductiver verification, synthesis, learning, invariant synthesis)
Post-doctoral researcher in the ExCAPE project, jointly at Illinois and UCLA.
Students currently advised:
Francesco Sorrentino (testing concurrent programs)
Edgar Pek (static analysis; points-to analysis)
Pranav Garg (deductive verification; compositional verification)
Shambwaditya Saha (synthesis)
Thesis: Automatic Techniques for Proving Correctness of Heap-Manipulating Programs
Now postdoc at MIT/UMD.
Sruthi Bandhakavi; security of web extensions -- now at Google
Postdocs: Gennaro Parlato -- now faculty at University of Southampton
Note to graduate students: If you are interested in mainstream software verification, I suggest that you take the course CS477 (Formal Methods in Software Development) followed by my course CS598MP (offered only once in a while) on Software Verification.
The CS598MP course is more advanced, and CS477 will be a pre-requisite for it in the future.
I also strongly encourage you to take the CS498 course on "Logic in Computer Science" (aka Logical Systems) offered by me or Prof. Viswanathan before you take CS58MP:Software Verification.
CS498: Logic in Computer Science
CS173: Discrete Structures
CS373: Intro to Theory of Computation
CS477: Formal Methods in Software Development
Also check out the following:
Formal Methods Seminar at Illinois
The new Formal Methods Reading List
Tutorial on Machine-learning based methods for synthesizing invariants.
, at Computer Aided Verification (CAV), San Fransisco, USA, 2015.
PC Member: ICALP 2016: Int'l Colloq. on Automata Languages and Programming, Rome, Italy.
External Review Committee: CAV 2016: Computer Aided Verification, Toronto, Canada.
Co-chair/Organizer: SYNT 2015: 4th Workshop on Synthesis (associated CAV), San Francisco, USA.
PC Member: Trustworthy Global Computing (TGC), 2015, Madrid, Spain.
ERC Member: PLDI 2015, Portland, Oregon, USA.
PC Member: ACM/IEEE International Conference on
Model Driven Engineering Languages and Systems, 2014, Madrid, Spain.
PC Member: POPL 2015, Mumbai, India.
PC Member: PLDI 2014, Edinburgh, Scotland.
PC Member: CONCUR 2014, Rome, Italy
PC Member: SAS 2014, Munich, Germany
2013: PC Member: MFCS, 2013, CAV 2013, Highlights of Logic, Automata, Games
2012: PC Chair: CAV 2012; PC Member: LPAR-18, POPL 2012.
2011: PC Member: CAV 2011, ATVA 2011, FSTTCS 2011.
2010: PC Member: FSTTCS 2010, ATVA 2010,
2009: PC member: CAV 2009,
LICS 2009, TIME 2009; Ext Rev Committee: PLDI 2009
2008: PC Member: APLAS 2008, CONCUR 2008.
2007 PC Chair: INFINITY 2007 (with CONCUR); PC Member: ICALP 2007
2006 PC member: ACM SAC.
2005 PC member: FSTTCS 2005, CAV 2005.
GDV 2005 (with CAV'05).
2004 PC member: FORMATS and FTRTFT, 2004
Other Activities: Organized events, invited talks, etc.