Radhia Cousot Explained

Radhia Cousot
Birth Date:6 August 1947
Birth Place:Sakiet Sidi Youssef, Tunisia
Death Place:New York City
Citizenship:French
Spouse:Patrick Cousot
Field:Computer science
Alma Mater:Institut National Polytechnique de Lorraine
Thesis Title:Fondements des méthodes de preuve d'invariance et de fatalité de programmes parallèles
Thesis Year:1985
Doctoral Advisor:Claude Pair
Known For:Abstract interpretation
Prizes:ACM SIGPLAN Programming Languages Achievement Award
IEEE Computer Society Harlan D. Mills Award

Radhia Cousot (6 August 1947 – 1 May 2014)[1] was a French computer scientist known for inventing abstract interpretation.

Studies

Radhia Cousot was born on 6 August 1947, in Sakiet Sidi Youssef in Tunisia, where she survived the massacre of the children in her school on February 8, 1958. She then went to the Lycée de jeunes filles at Sousse, the Lycée français at Algiers and then the Polytechnic School of Algiers (where she was ranked 1st and the only woman). She specialized in mathematical optimization and integer linear programming. Supported by a UNESCO fellowship (1972–1975), she obtained a master's degree in Computer Science (Diplôme d'études approfondies (DEA)) at the Joseph Fourier University of Grenoble in 1972. She obtained her Doctorate ès Sciences/State Doctorate in Mathematics in Nancy in 1985 under the supervision of .[2]

Career

Radhia Cousot was appointed Associate research scientist at the IMAG laboratory of the Joseph Fourier University of Grenoble (1975–1979) and, from 1980 on, at the Centre national de la recherche scientifique, as junior research scientist, research scientist, senior research scientist, and senior research scientist emerita at the Computer Science laboratories of the Henri Poincaré University of Nancy (1980–1983), the University of Paris-Sud at Orsay (1984–1988), the École Polytechnique (1989–2008) where from 1991 she headed the research team “Semantics, Proof and Abstract interpretation”, and the École Normale Supérieure (2006–2014).

Scientific achievements

Together with her husband Patrick, Radhia Cousot is the originator of abstract interpretation,[3] [4] an influential technique in formal methods. Abstract interpretation is based on three main ideas.

  1. Any reasoning/proof/static analysis on a computer system refers to a semantics describing, at some level of abstraction, its possible executions.
  2. The reasoning/proof/static analysis should abstract away all semantic properties irrelevant to the reasoning.
  3. Because of undecidability, sound, fully automated, and always terminating reasonings on/proofs/static analysis of computer systems must perform mathematical inductions in the abstract and so, can only be approximate (even with finiteness and decidability hypothesis, because of combinatorial explosion beyond tiny systems).

In her thesis, Radhia Cousot advanced the semantics, proof, and static analysis methods for concurrent and parallel programs.[5]

Radhia Cousot is at the origin of the contacts with Airbus in January 1999 that led to the development of Astrée run-time error analyzer from 2001 onwards, a tool for sound static program analysis of embeddedcontrol/command software developed at the École Normale Supérieure[6] and now distributed by AbsInt GmbH,[7] a German software company specialized on static analysis. Astrée is used in the transportation, space, and medical software industries.

Awards

With Patrick Cousot, she received the ACM SIGPLAN Programming Languages Achievement Award [8] in 2013 and the IEEE Computer Society Harlan D. Mills award [9] in 2014 for “the invention of ‘abstract interpretation’, development of tool support, and its practical application”.

Radhia Cousot best young researcher paper award

Since September 2014, the Radhia Cousot best young researcher paper award[10] is attributed annually by the program chair on behalf of the program committee of the Static Analysis Symposia (SAS).[11]

External links

Notes and References

  1. Web site: Institut des sciences de l'information et de leurs interactions - CNRS - Disparition de Radhia Cousot. www.cnrs.fr.
  2. In the 1980s, there existed in France two levels of PhDs, the higher one, the Doctorate ès Sciences/State Doctorate being necessary to access professorships. It has since been replaced by the habilitation.
  3. Book: http://dl.acm.org/citation.cfm?id=512950.512973. Abstract interpretation: a unified lattice model for static analysis of programs by construction or approximation of fixpoints. Patrick. Cousot. Radhia. Cousot. 1 January 1977. ACM. 238–252. dl.acm.org. 10.1145/512950.512973. Abstract interpretation. 10.1.1.216.8213. 207614632.
  4. Book: http://dl.acm.org/citation.cfm?id=567752.567778. Patrick. Proceedings of the 6th ACM SIGACT-SIGPLAN symposium on Principles of programming languages - POPL '79. Cousot. Radhia. Cousot. 1 January 1979. ACM. 269–282. dl.acm.org. 10.1145/567752.567778. Systematic design of program analysis frameworks. 10.1.1.207.2895. 1547466.
  5. Web site: R. Cousot, Fondements des méthodes de preuve d'invariance et de fatalité de programmes parallèles.. www.di.ens.fr.
  6. Web site: Home page of the Astrée Static Analyzer at ENS. ens.fr.
  7. Web site: Astrée Runtime Error Analyzer. www.absint.com.
  8. Web site: Programming Languages Achievement Award. www.sigplan.org.
  9. Web site: Harlan D. Mills Award • IEEE Computer Society. www.computer.org.
  10. Web site: Radhia Cousot best young researcher paper award. www.di.ens.fr.
  11. Web site: Static Analysis Symposia Central Site. staticanalysis.org.