Reasoning about strings in databases
Journal of Computer and System Sciences
Selected Papers from Constraint Programming: Basics and Trends
A UML model consistency verification approach based on meta-modeling formalization
Proceedings of the 2006 ACM symposium on Applied computing
UMLtoCSP: a tool for the formal verification of UML/OCL models using constraint programming
Proceedings of the twenty-second IEEE/ACM international conference on Automated software engineering
USE: A UML-based specification environment for validating UML and OCL
Science of Computer Programming
Electronic Notes in Theoretical Computer Science (ENTCS)
Path Feasibility Analysis for String-Manipulating Programs
TACAS '09 Proceedings of the 15th International Conference on Tools and Algorithms for the Construction and Analysis of Systems: Held as Part of the Joint European Conferences on Theory and Practice of Software, ETAPS 2009,
HAMPI: a solver for string constraints
Proceedings of the eighteenth international symposium on Software testing and analysis
Automatic Model Generation Strategies for Model Transformation Testing
ICMT '09 Proceedings of the 2nd International Conference on Theory and Practice of Model Transformations
Verification and validation of declarative model-to-model transformations through invariants
Journal of Systems and Software
Barriers to systematic model transformation testing
Communications of the ACM
ECMDA-FA'07 Proceedings of the 3rd European conference on Model driven architecture-foundations and applications
Rex: Symbolic Regular Expression Explorer
ICST '10 Proceedings of the 2010 Third International Conference on Software Testing, Verification and Validation
An evaluation of automata algorithms for string analysis
VMCAI'11 Proceedings of the 12th international conference on Verification, model checking, and abstract interpretation
Extensive validation of OCL models by integrating SAT solving into USE
TOOLS'11 Proceedings of the 49th international conference on Objects, models, components, patterns
Encoding OCL data types for SAT-based verification of UML/OCL models
TAP'11 Proceedings of the 5th international conference on Tests and proofs
A Search-Based OCL Constraint Solver for Model-Based Test Data Generation
QSIC '11 Proceedings of the 2011 11th International Conference on Quality Software
On validation of ATL transformation rules by transformation models
Proceedings of the 8th International Workshop on Model-Driven Engineering, Verification and Validation
Strengthening SAT-based validation of UML/OCL models by representing collections as relations
ECMFA'12 Proceedings of the 8th European conference on Modelling Foundations and Applications
UML2Alloy: a challenging model transformation
MODELS'07 Proceedings of the 10th international conference on Model Driven Engineering Languages and Systems
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Models play a key role in assuring software quality in the model-driven approach. Precise models usually require the definition of OCL expressions to specify model constraints that cannot be expressed graphically. Techniques that check the satisfiability of such models and find corresponding instances of them are important in various activities, such as model-based testing and validation. Several tools to check model satisfiability have been developed but to our knowledge, none of them yet supports the analysis of OCL expressions including operations on Strings in general terms. As, in contrast, many industrial models do contain such operations, there is evidently a gap. There has been much research on formal reasoning on strings in general, but so far the results could not be included into model finding approaches. For model finding, string reasoning only contributes a sub-problem, therefore, a string reasoning approach for model finding should not add up front too much computational complexity to the global model finding problem. We present such a lightweight approach based on constraint satisfaction problems and constraint rewriting. Our approach efficiently solves several common kinds of string constraints and it is integrated into the EMFtoCSP model finder.