
Jasmin Christian Blanchette
ジャスミン・クリスチャン・ブランチェット 亚斯麦·克里斯蒂安·布兰切特
I am a postdoc at the Chair for
Logic and Verification lead by Tobias Nipkow at the
Technische Universität München, which I joined in
2008. My research focuses on the generation of counterexamples for higherorder
logic (Nitpick) and the use of firstorder automatic
theorem provers in a higherorder theorem prover (Sledgehammer). I am financed by the project
Hardening the Hammer (DFG Ni 491/141).
From 2000 to 2008, I worked as software engineer and documentation manager for
Trolltech (now Digia, Qt) in Oslo, Norway.
During the 2012–13 and 2013–14 winter terms, I was the proud
Master of Competition
for the course Einführung in
die Informatik 2.
Contents:
Students ⋅
Drafts ⋅
Journal Articles ⋅
Conference Papers ⋅
Workshop Papers ⋅
Theses ⋅
Books ⋅
Other Publications ⋅
Software ⋅
Activities ⋅
Video ⋅
Address
Students
Current:
 Mathias Fleury (M.Sc. intern, formalisation of superposition; cosupervisor: Dmitriy Traytel)
 Martin Desharnais (B.Sc. intern, properties of (co)datatypes; cosupervisor: Dmitriy Traytel)
Past:
 Albert Steckermeier (B.Sc., enhanced integration of Waldmeister in Sledgehammer)
 Maximilian Haslbeck (M.Sc. directed research, translation of Naproche to Isabelle; cosupervisor: Tobias Nipkow)
 Lorenz Panny (B.Sc., (co)recursive function definitions; cosupervisor: Dmitriy Traytel)
 Steffen Juilf Smolka (B.Sc., structured Isabelle proofs from refutation proofs)
 Dmytro Traytel (M.Sc., (co)datatype definitions; cosupervisor: Andrei Popescu)
Drafts

Semiintelligible Isar proofs from machinegenerated proofs
J. C. B., Sascha Böhme, Mathias Fleury, Steffen Juilf Smolka, and Albert Steckermeier.
Draft article (PDF)

Encoding monomorphic and polymorphic types
J. C. B., Sascha Böhme, Andrei Popescu, and Nicholas Smallbone.
Draft article (PDF)

Foundational extensible corecursion
J. C. B., Andrei Popescu, and Dmitriy Traytel.
Draft paper (PDF)

Witnessing (co)datatypes
J. C. B., Andrei Popescu, and Dmitriy Traytel.
Draft paper (PDF)
Journal Articles

LEOII and Satallax on the Sledgehammer test bench
Nik Sultana, J. C. B., and Lawrence C. Paulson.
Journal of Applied Logic 11(1), pp. 91–102, 2013.
Web page
⋅
Preprint (PDF)
 Relational analysis of (co)inductive predicates, (co)inductive datatypes, and (co)recursive functions
J. C. B. Software Quality Journal 21(1), pp. 101–126, 2013.
Web page
⋅
Preprint (PDF)
 Monotonicity inference for higherorder formulas
J. C. B. and Alexander Krauss. Journal of Automated Reasoning 47(4), pp. 369–398, 2011.
Web page
⋅
Preprint (PDF)
 Proof pearl: Mechanizing the textbook proof of
Huffman's algorithm in Isabelle/HOL
J. C. B. Journal of Automated Reasoning 43(1), pp. 1–18, 2009.
Web page
⋅
Preprint (PDF)
Conference Papers

Truly modular (co)datatypes for Isabelle/HOL
J. C. B., Johannes Hölzl, Andreas Lochbihler, Lorenz Panny, Andrei Popescu, and Dmitriy Traytel. In Klein, G., Gamboa, R. (eds.)
5th Conference on Interactive Theorem Proving (ITP 2014), LNCS, Springer, 2014.
Preprint (PDF)

Cardinals in Isabelle/HOL
J. C. B., Andrei Popescu, and Dmitriy Traytel. In Klein, G., Gamboa, R. (eds.)
5th Conference on Interactive Theorem Proving (ITP 2014), LNCS, Springer, 2014.
Preprint (PDF)

Unified classical logic completeness: A coinductive pearl
J. C. B., Andrei Popescu, and Dmitriy Traytel. In
Demri, S., Kapur, D., Weidenbach, C. (eds)
7th International Joint Conference on Automated Reasoning (IJCAR 2014),
LNAI, Springer, 2014.
Preprint (PDF)

Mechanizing the metatheory of Sledgehammer
J. C. B. and Andrei Popescu. In Fontaine, P., Ringeissen, C., Schmidt, R. A. (eds.)
9th International Symposium on Frontiers of Combining Systems (FroCoS 2013),
LNAI 8152, pp. 245–260, Springer, 2013.
Web page
⋅
Preprint (PDF)

MaSh: Machine learning for Sledgehammer
Daniel Kühlwein, J. C. B., Cezary Kaliszyk, and Josef Urban.
In Blazy, S., PaulinMohring, C., Pichardie, D. (eds.)
4th Conference on Interactive Theorem Proving (ITP 2013),
LNCS 7998, pp. 35–50, Springer, 2013.
Web page
⋅
Preprint (PDF)

TFF1: The TPTP typed firstorder form with rank1 polymorphism (system description)
J. C. B. and Andrei Paskevich. In Bonacina, M. P. (ed.) 24th International Conference on Automated Deduction (CADE 2013),
LNAI 7898, pp. 414–420, Springer, 2013.
Preprint (PDF) ⋅ Draft specification (PDF)

Encoding monomorphic and polymorphic types
J. C. B., Sascha Böhme, Andrei Popescu, and Nicholas Smallbone.
In Piterman, N., Smolka, S. (eds.) 19th International Conference on Tools and Algorithms for the
Construction and Analysis of Systems (TACAS 2013), LNCS 7795, pp. 493–507, Springer, 2013.
Web page
⋅ Preprint (PDF)

Foundational, compositional (co)datatypes for higherorder logic—Category theory applied to theorem proving
Dmitriy Traytel, Andrei Popescu, and J. C. B. In
27th Annual IEEE Symposium on Logic in Computer Science (LICS 2012),
pp. 596–605, IEEE, 2012.
Web page
⋅
Preprint (PDF)

More SPASS with Isabelle—Superposition with hard sorts and configurable simplification
J. C. B., Andrei Popescu, Daniel Wand, and Christoph Weidenbach. In Beringer, L., Felty, A. P. (eds.) Third International Conference on Interactive Theorem Proving (ITP 2012),
LNCS 7406, pp. 345–360, Springer, 2012.
Web page
⋅
Preprint (PDF)

Automatic proof and disproof in Isabelle/HOL
J. C. B., Lukas Bulwahn, and Tobias Nipkow. In Tinelli, C., SofronieStokkermans, V. (eds.) 8th International Symposium
Frontiers of Combining Systems (FroCoS 2011),
LNAI 6989, pp. 12–27, Springer, 2011.
Web page
⋅
Preprint (PDF)

Extending Sledgehammer with SMT solvers
J. C. B., Sascha Böhme, and Lawrence C. Paulson.
In Bjørner, N., SofronieStokkermans, V. (eds.) 23rd International Conference on Automated Deduction (CADE 2011),
LNAI 6803, pp. 116–130, Springer, 2011.
Web page
⋅
Preprint (PDF)

Nitpicking C++ concurrency
J. C. B., Tjark Weber, Mark Batty, Scott Owens, and Susmit Sarkar.
13th International ACM SIGPLAN Symposium on
Principles and Practice of Declarative Programming (PPDP 2011),
pp. 113–124, ACM Press, 2011.
Web page
⋅ Preprint (PDF)

Generating counterexamples for structural inductions by exploiting nonstandard models
J. C. B. and Koen Claessen.
In Fermüller, C. G., Voronkov, A. (eds.) 17th International Conference on
Logic for Programming, Artificial Intelligence and Reasoning (LPAR Yogyakarta 2010),
LNAI 6397, pp. 117–141, Springer, 2010.
Web page
⋅
Preprint (PDF)
 Nitpick: A counterexample generator for Isabelle/HOL based on the relational
model finder Kodkod (system description)
J. C. B. Presented at the 17th International
Conference on Logic for Programming, Artificial Intelligence and Reasoning (LPAR
Yogyakarta 2010).
Web page
⋅ Preprint (PDF)

Monotonicity inference for higherorder formulas
J. C. B. and Alexander Krauss.
In Giesl, J., Hähnle, R. (eds.) 5th International Joint Conference on Automated Reasoning (IJCAR 2010),
LNAI 6173, pp. 91–106, Springer, 2010.
Web page ⋅
Preprint (PDF)

Nitpick: A counterexample generator for higherorder logic based on a
relational model finder
J. C. B. and Tobias Nipkow.
In Kaufmann, M., Paulson, L. C. (eds.)
First International Conference on Interactive Theorem Proving (ITP 2010), LNCS 6172, pp. 131–146, Springer, 2010.
Web page ⋅
Preprint (PDF)

Relational analysis of (co)inductive predicates, (co)inductive datatypes, and (co)recursive functions
J. C. B.
In Fraser, G., Gargantini, A. (eds.) Fourth International Conference on Tests and Proofs (TAP 2010), LNCS 6143, pp. 117–134, Springer, 2010.
Web page ⋅
Preprint (PDF)

Nitpick: A counterexample generator for higherorder logic based on a
relational model finder (extended abstract)
J. C. B. and Tobias Nipkow. Third International
Conference on Tests and Proofs (TAP 2009). In Dubois, C. (ed.) TAP 2009:
Short Papers, ETH Technical Report 630, 2009.
Full proceedings (PDF) ⋅
Preprint (PDF)
Workshop Papers

My life with an automatic theorem prover
J. C. B. Vampire 2014.
Preprint (PDF)

Axiom selection as a machine learning problem
J. C. B. and Daniel Kühlwein. In Geschke, S., Loewe, B., and Schlicht, P., Infinity, Computability, and Metamathematics: Festschrift Celebrating the 60th Birthdays of Peter Koepke and Philip Welch, Tributes, College Publications, 2014.
Preprint (PDF)

Robust, semiintelligible Isabelle proofs from ATP proofs
Steffen Juilf Smolka and J. C. B. Third International Workshop on
Proof Exchange for Theorem Proving (PxTP 2013).
Preprint (PDF)

Redirecting proofs by contradiction
J. C. B. Third International Workshop on
Proof Exchange for Theorem Proving (PxTP 2013).
Preprint (PDF)
 Three years of experience with Sledgehammer, a practical link between automated and
interactive theorem provers
Lawrence C. Paulson and J. C. B. Invited talk at the 8th
International Workshop on the Implementation of Logics (IWIL2010).
Full proceedings (PDF) ⋅
Preprint (PDF)

Intraobject versus interobject: Concurrency and reasoning in Creol
Einar Broch Johnsen, J. C. B., Marcel Kyas, and Olaf Owe.
Electronic Notes in Theoretical Computer
Science 243 (2nd International Workshop on Harnessing Theories for Tool Support in Software,
TTSS 2008), pp. 89–103, 2009.
Web page ⋅
Preprint (PDF)
 An open system operational
semantics for an objectoriented and componentbased language
J. C. B. and Olaf Owe. Electronic
Notes in Theoretical Computer Science 215 (4th
International Workshop on Formal Aspects of Component Software, FACS 2007), pp.
151–169, 2008.
Web page ⋅
Preprint (PDF)
Theses
 Verification of Assertions in Creol Programs
J. C. B. M.Sc. thesis, Institutt for informatikk, Universitetet i Oslo, May 2008.
PDF
Books
 C++ GUI Programming with Qt 4
J. B. and Mark Summerfield. Prentice Hall, July 2006.
Chinese (Simplified), French, German, Japanese, and Russian
translations are available.
Web page ⋅
PDF
 C++ GUI Programming with Qt 3
J. B. and Mark Summerfield. Bruce
Perens' Open Source Series, Prentice Hall, January 2004.
Chinese (Simplified), German, Japanese, and Russian translations are available.
Web page ⋅
PDF
Other Publications

Monotonicity or how to encode polymorphic types safely and efficiently
J. C. B., Sascha Böhme, and Nicholas Smallbone. Subsumed by “Encoding monomorphic and polymorphic types.”
Technical report (PDF)
 An Isabelle/HOL formalization of
the textbook proof of Huffman's algorithm
J. C. B. In Gerwin Klein, Tobias Nipkow, and Larry Paulson, editors,
Archive of Formal Proofs, October 2008.
Web page
⋅
PDF
 The Little Manual of API Design
J. B. Trolltech, a Nokia company, June 2008.
PDF
 Overview of the Creol language
J. C. B. Essay, Department of Informatics, Univerity of Oslo, May 2007.
PDF
 Throwing MFC out of Windows—Qt application
development with Visual Studio .NET
J. B. Linux Magazine 73, pp. 40–43, December 2006.
Web page
 WindowstoLinux migration with Qt
J. B. TUX 4, July 2005.
Web page ⋅ PDF
Software

DiffPDF—A utility to compare PDFs. Developed by Mark Summerfield.
Web page
Activities
 Program committee member, conferences:
TAP 2015 (cochair),
CADE25 (workshop chair),
IJCAR 2014,
FroCoS 2013.
 Program committee member, workshops:
PAAR2016 (cochair),
Deduktionstreffen2015,
PxTP 2015,
PAAR2014,
PxTP 2013 (cochair),
PxTP 2012,
IWIL 2012,
PAAR2012, and
IWIL 2010.
Video
Address
Dr. Jasmin C. Blanchette
Institut für Informatik
Technische Universität München
Boltzmannstr. 3
85748 Garching
GermanyPhone: +49 (0)89 289 17336
Fax: +49 (0)89 289 17301
Email: blanchette in.tum.de
Office: 00.09.062
“A proof is a proof.
What kind of a proof?
It's a proof.
A proof is a proof,
and when you have a good proof,
it's because it's proven.”
— Jean Chrétien

