D. V. Fedasyuk, R. S. Chopey


Actuality. The work considers the problem of automated construction of the control flow graph using the text of a program written in
C. The graph construction is an important step in the structural testing of embedded systems.
Objective. The work is aimed at creation of a fast algorithm for constructing the control flow graph from a source code. Such an
automatically generated graph can be used by existing tools for automated testing.
Method. We propose an algorithm for constructing the control flow graph from the program written in C language, which preprocesses
the source code of the program by removing comments and blank lines, determines the number of vertices and edges of the control flow graph
by means of program text syntactic analysis, and then formats, fills and stores the incidence matrix in a separate text file. This file can be
passed as input data for some existing automated testing tools. Moreover, the content of the text file can be visualized by existing tools for graphic representation of graphs.
Results. We’ve developed a software module that implements the proposed algorithm. The module can be used for experiments aimed at
studying the dependence of the control flow graph’s time construction on the amount of lines in a source code.
Conclusions. The conducted experiments confirmed the operability of the proposed algorithm and the software module developed on its
basis. The results have proved the applicability of the algorithm, thus it can be recommended for further use together with automated testing
tools to reduce the time required for testing of embedded software.


control flow graph; automated testing; Keil uVision, ARM; embedded systems.


Aho A. V., Lam M. S., Sethi R., Ullman J. D. : eds. Compilers: Principles, techniques, and tools. Amsterdam, Addison Wesley, 2007, 1038 p. ISBN: 0321486811

Allen F., Cocke J. Graph-theoretic constructs for program control flow analysis : Research Report : RC-3923, IBM Thomas J. Watson Research Center – IBM, 1972, 130 p.

Ferrante J., Ottenstein K. J., Warren J. D. The program dependence graph and its use in optimization, ACM Transactions on Programming Languages and Systems, 1987, No. 9, pp. 319–349. DOI: 10.1145/24039.24041

Gold R. On cyclomatic complexity and decision graphs, Proceedings of the 10th International Conference of Numerical Analysis and Applied Mathematics (ICNAAM ’12), 2007,

Vol. 1479, pp. 2170–2173. DOI: 10.1063/1.4756622

Henderson-Sellers B., Tegarden D. The theoretical extension of two versions of cyclomatic complexity to multiple entry/exit modules, Software Quality Journal, 1994, Vol. 3, pp. 253–269. DOI: 10.1007/BF00403560

Jalote P. An integrated approach to software engineering. New York, Springer, 2005, 566 p. ISBN: 978-0-387-28132-2

Sommerville I. Software Engineering. Pearson, Addison Wesley, 2004, 750 p. ISBN: 0321210263

Frankl P. G., Weyuker E. J. Provable improvements on branch testing, IEEE Transactions on Software Engineering, 1993, Vol. 19, pp. 962–975. DOI: 10.1109/32.245738

Gold R. Control flow graphs and code coverage, International Journal of Applied Mathematics & Computer Science, 2010, Vol. 20, pp. 739–749. DOI: 10.2478/v10006-010-0056-9 10. Zhu H., Hall P. A., May J. H. Software unit test coverage and adequacy, ACM Computing Surveys, 1997, Vol. 29, pp. 366–427. DOI: 10.1145/267580.267590

Fedasyuk D., Chopey R., Knysh B. Architecture of a tool for

automated testing the worst-case execution time of real-time

embedded systems’ firmware, 14th International conference, The experience of designing and application of cad systems in

microelectronics, 2017, pp. 278–282. DOI: 10.1109/


Hossain M. I., Lee W. J., Youngsul S. Integration testing approach using usage patterns of global variables [Electronic resource], Researchgate, 2012. Access mode:


Muha Ju. P., Sekachjov V. A. Algoritm dlja preobrazovanija

programmnogo koda na jazyke vysokogo urovnja v graf-shemu, Izvestija volgogradskogo gosudarstvennogo tehnicheskogo universiteta, 2009, No. 3, pp. 58–63.

Cooper K. D., Harvey T. J., Waterman T. Building a control-flow graph from scheduled assembly code [Electronic resource], Researchgate, 2013. Access mode:

Amine A., Mohammed B., Jean-Louis L. Generating control flow graph from Java card byte code, Information Science and

Technology (CIST), 2014, pp. 206–212. DOI: 10.1109/

CIST.2014.7016620 16. Graph Online [Electronic resource]: Creating graph from

incidence matrix. Access mode:

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