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Constraint Reasoning

Our mission is to lead the research on decision and optimisation procedures. Our approach involves fundamental work on new theories and constraints over different formalisms. Our algorithms are thought with parallelism in mind to adequately meet large scale computational resources. The results of our research impact many domains, in particular when the ability to search through a large set of possibilities and to find the ones that optimally match a set of given requirements is fundamental.

Research questions

Parallel Satisfiability. How can we efficiently harness the power of multicore machines and massively parallel cloud-based HPC resources to disentangle the original NP-complete problem?

Declarative Problem Solving. What is the link between how problems are logically described in a formal language, and how they are solved by algorithms?

Satisfiability Modulo Theories. How can we extend Boolean satisfiability with combinations of background theories?


Application domains

Configuration, Planning, and Scheduling. In manufacturing, customize orders, sequence and decide exact timing of operations to fulfil orders. 

Software and hardware verification. In software and hardware engineering, considers if a piece of software or hardware fully satisfies a set of given requirements.


Emerging applications domains. Personal Assistants, Program Synthesis, Building Synthesis, Mobility, etc.



Technology transfers
Disolver-based Portfolio management  Constraint Programming, Local Search solvers, Modelling  MSF-based, Configuration, Planning, Resources management 
 MSF-based, Auction and Inventory optimisation MSF-based, UI layout  MSF-based, test coverage optimisation 
MSF-based, NLP problems for HIV evolution       MSF-based, various prototypes and demos Ad-hoc, Image packing problem 





  • We are selecting interns on a yearly basis. You can apply here.
  • For post-doc, and full time positions. You can apply here.
  • PhD European Scholarship Programme. Details here
Lucas Bordeaux
Lucas Bordeaux

Yi Wei
Yi Wei

Youssef Hamadi
Youssef Hamadi