Related work dart cute full name directed automated random testing concolic unit testing engine published date jun. Its a fun and cute library that will make your programming fun and productive. Concolic testing can catch generic errors such as assertion violations, uncaught exceptions, and segmentation faults. Automated test generation using concolic testing school of. Concolic testing for models of statebased systems esecfse 19, august 2630, 2019, tallinn, estonia figure 7. Cute a concolic unit testing engine and jcute cute for java 4244 extends dart to handle multithreaded programs that manipulates dynamic data structures using pointer operations. Acteve stands for automated concolic testing of eventdriven programs, to alleviate the pathexplosion problem. In short, concolic testing has thus far been explored in a. Comparison with different coveragedriven dnn testing methods deepconcolic deepxplore 18 deeptest 25 deepcover 23 deepgauge 15. Acteve is tailored to eventdriven programs such as smartphone apps. Concolic testing for functional languages aggelos giantsios 1nikolaos papaspyrou konstantinos sagonas.
This is due to the fact that the concolic testing considers only one program execution path at a time. A survey of new trends in symbolic execution for software testing. Cute a concolic unit testing engine and jcute cute for java 4244 extends dart to handle multi. Large realworld programs are almost always concurrent. In this paper, we introduce selective symbolic execution, path selecting, random and incorrect seed input, three approaches to ease the path explosion and speed up bugs. Offensivecon18 vitaly nikolenko concolic testing for kernel fuzzing and vulnerability discovery.
A methodology for applying concolic testing diva portal. These tools dart and cute, exe applied concolic testing to unit testing of c programs. Furthermore, our algorithm improves the coverage of two stateoftheart test generators by 21% and 32%. Finally, cute, a tool implementing the method is described together with the results of applying cute to realworld examples of c code. Concolic testing alternates between concrete program execution and symbolic analysis to explore the execution paths of a software program and to increase code coverage. This work is inspired by recent advances in concolic testing 7, 8. Concolic testing koushik sen university of california, berkeley joint work with gul agha, patrice godefroid, nils klarlund, rupak majumdar, darko marinov used and adapted by jonathan aldrich, with permission, for 1735517655 program analysis. Cute, a concolic unit testing engine for c and java, is a tool to systematically and automatically test sequential c programs in. Crest uses cil to instrument c programs for testing. To see the statistics about branch coverage and runtime execute. Symbolic execution for software testing in practice.
Concolic testing for deep neural networks ase 18, september 37, 2018, montpellier, france table 1. Concolic testing combines concrete and symbolic testing to automatically and systematically test sequential programs having memory graphs as inputs. Cute s speed is t for unit testing, but cute does not support formal speci cations. The link cute and jcute that goes to appears to be broken 144. Directed test generation using concolic testing on rtl models. Esecfse05 proceedings of the joint 10th european software engineering conference esec and th acm sigsoft symposium on the foundations of software engineering fse. The main innovation introduced by concolic testing orig inally presented in dart 9 and cute 15 was the fact that concrete inputs can be generated based on some intel. The approach used builds on previous work combining symbolic and concrete execution, and more specifically, using such a combination to generate. This is the second installment of a twopart series about our concolic testing tool, grace. Cute 6,16 is an automated test case generation tool that uses concolic testing. For this execution, cute generates the path constraint.
Concolic testing for high test coverage and reduced human. In unit testing, a program is decomposed into units which are collections of functions. In concolic testing, what does concrete execution mean. The instrumented c program is executed with given input values initial input values are assigned randomly 4. On a corpus of 11 programs, our concolic walk algorithm generates tests with two to threetimes higher coverage than simplificationbased tools while being up to fivetimes as efficient. A concolic unit testing engine for c university of.
In those cases, symbolic execution degrades gracefully by leveraging concrete values into a form of partial symbolic execution. How to measure upload and download internet speed with. This paper presents a concolic testing approach to automatic postsilicon test generation with virtual prototypes. Cute, a tool implementing the method is described together with the results of applying cute to realworld examples of c code. The concolic testing is also useful to model checking. Traditional test input generation techniques use either 1 concrete execution or 2 symbolic execution that builds. Using path exploration method we create test input values. What you will need to do is have a file of known size, download it to the client, take the filesizetime to transfer and that is your download speed. Cute is defined as concolic unit testing engine computer programming very frequently.
Proceedings of the 10th european software engineering conference held jointly with th acm sigsoft international symposium on foundations of software engineering, new york, ny, usa, 2005. Concolic testing for functional languages sciencedirect. A concolic unit testing engine for c, uses that term in its abstract section. Concolic testing, also known as directed automated random testing dart or dynamic symbolic execution, is an efficient way to automatically and systematically generate test inputs for programs. In hardware domain however, existing concolic testing methods offer uniform tests, and are not tuned for directed test generation. Concolic testing is a hybrid software verification technique that performs symbolic execution. Unfortunately, the current effectiveness of concolic testing tools are limited when testing large applications due to the enormous number of control paths and limited budget. Explore all execution paths of an unit for all possible inputs 15. Practical concolic testing techniques for cots operating systems su yong kim, sangho lee, insu yun, wen xu, byoungyoung lee, youngtae yun, taesoo kim usenix annual technical conference july 14, 2017 the affiliated institute of etri georgia institute of technology purdue university. Scalable concolic testing for reliable software score sw. The current work develops a method to represent and track.
A modified distribution of cil is included in directory cil. Cute stands for concolic unit testing engine computer programming. Driller 16 is an uptodate hybrid testing tool that leverages fuzz testing and selective concolic execution in a complementary manner to find deeper bugs. In this paper, we develop the first concolic testing approach for deep neural networks dnns. Mar 19, 2018 offensivecon18 vitaly nikolenko concolic testing for kernel fuzzing and vulnerability discovery. The entry function may contain pointer arguments, in which case the inputs to the unit are memory graphs. Cute, a concolic unit testing engine for c and java, is a tool to systematically and automatically test sequential c programs in cluding pointers and concurrent java programs. Concolic testing tools for java typically work at the level of jvm bytecode, klee 3 uses llvm code, while many tools for c work at the level of assembly. A concolic unit testing engine for c darko marinov. Industrial application of concolic testing on embedded.
The score framework employs a distributed concolic testing algorithm that can utilize a large number of computing nodes in a scalable manner to achieve 1 a linear increase in the speed of test case generation as a number of distributed nodes increases and 2 low communication overhead among distributed nodes. Explore all execution paths of an unit for all possible inputs exploring all execution paths ensure that all reachable. Citeseerx document details isaac councill, lee giles, pradeep teregowda. Boosting concolic testing via interpolation joxan jaffar, vijayaraghavan murali national university of singapore joxan, m. We have developed an automated testing framework maist that automatically generates the test driver, stubs, and test inputs to a target task by applying concolic testing. Cute concolic unit testing engine computer programming. Communication of the harness, the model under test mut and the symbolic. Cute was founded in 2002 by andreas lohff and dr achim preuss and employs today more than 250 professionals worldwide. In cav, volume 4144 of lecture notes in computer science, 419423. Dart 8 and cute 18 for c, and symbolic java pathfinder 15 and jcute for java, to name a few. The link cute and jcute that goes to cute appears to be broken 144.
Before you start the test, make sure that any other devices in your home that are connected to the internet, like an ipad or xbox, or that download content like netflix via the internet, such as a smart tv, are turned off. Example c code and inputs that cute generates for testing the figures. Concolic testing has inspired the development of several industrial and academic automated testing and security tools such as pex, sage, and yogi at microsoft, apollo at ibm, conbol at samsung, and cute, jcute, catg, jalangi, splat, bitblaze, jfuzz, oasis, and smartfuzz in academia. Concolic testing uses a combination of runtime symbolic execution and automated theorem proving techniques to generate automatically nonredundant and. The approach used builds on previous work combining symbolic and concrete execution, and more specifically, using such a combination to generate test inputs to explore all feasible execution. Nov 05, 2007 concolic testing koushik sen eecs department, uc berkeley, ca, usa. I completely understand the way concolic testing works but i. Outline motivation background search based testing concolic testing pointers in cute and austin empirical study experimental setup test subjects results answers summary 1 motivation 2 background on austin and cute search based testing concolic testing pointers in cute and austin 3 empirical.
How is concolic unit testing engine computer programming abbreviated. Concolic testing overcomes these problems by combining concrete execution i. The list of acronyms and abbreviations related to cute concolic unit testing engine. Next to manual software testing, there are several automated ways to test software. Offensivecon18 vitaly nikolenko concolic testing for. Symbolic execution is a program analysis technique intro. Check out part 1 to read more background information on concolic execution. Traditional test input generation techniques use either 1 concrete execution or 2 symbolic execution that builds constraints and is followed by a generation of. Pdf concolic testing for models of statebased systems. Concolic testing has been successfully applied on both hardware and software designs 24.
Concolic a portmanteau of concrete and symbolic testing is a hybrid testing technique that integrates concrete execution with symbolic execution 9. Concolic unit testing and explicit path modelchecking tools tools paper koushik sen and gul agha university of illinois at urbanachampaign, usa. Dart cute full name directed automated random testing concolic unit testing engine published date jun. Symbolic execution for software testing eecs at uc berkeley. The key insight underlying acteve is a notion of subsumption between two event sequences. Concolic testing combines dynamic concrete execution and static symbolic execution to explore all possible execution paths of a target program, which can achieve high code coverage. A target c program is statically instrumented with probes, which record symbolic path conditions 3. Symbolic execution is used in conjunction with an automated theorem prover or constraint solver based. Testing your speed while using other devices simultaneously may impact the accuracy of the results. However, when a part of the path condition is infeasible for the smt solver to handle, we substitute values from a test run of the program. I have been given a project to create a concolic testing framework for testing c programs. That is everything we need to track down the failures origin and even some context helping with a first guess. Klee has been downloaded by a variety of groups from.
Concolic testing a portmanteau of concrete and symbolic is a hybrid software verification technique that performs symbolic execution, a classical technique that treats program variables as symbolic variables, along a concrete execution testing on particular inputs path. Definition of test inputs depend on what level of granularity the testing is performed. Select input variables to be handled symbolically 2. In the graphical user interface, try selecting the directory src and the java program dtestsdexample1. Undertaking 12 million assessments each year in over 70 countries, cute is a world leader in the design and implementation of innovative online tests, questionnaires and gamified assessments for recruitment, selection and development. However, because it is built on top of cute, a source code oriented testing tool, hybrid concolic testing still cannot be deployed on binary testing directly. Strategies for scalable symbolic executiondriven test. The paper addresses the problem of automating unit testing with memory graphs as inputs. A program is decomposed into units, where each unit is a collection of functions, and the units are independently. Measure the speed of the pipe as a whole, or are you trying to get the speed of a download you are performing. Because of this, cute can detect complex arithmetic and pointer errors.
Cute 6,16 is an automated test case generation tool that uses concolic test ing. It is a good idea to have a file at least a few mb in size so it can average out the peeks and valleys in the transfer. It can be used to do extreme programming and testfirst development in the c language. Introduction unit testing is a method for modular testing of a programs functional behavior. Concolic testing koushik sen eecs department, uc berkeley, ca, usa. It is an efficient way to identify all bugs present in a program. A methodology for applying concolic testing manuel cherep concolic testing is a technique that combines concrete and symbolic execution in order to generate inputs that explore different execution paths leading to better testing coverage. C unit testing framework overview cutest is a unit testing library for the c language. Concolic testing tools can find runtime errors fully automatically using available type specifications. Industrial application of concolic testing approach.
Automated unit testing of realworld c and java programs generate test inputs execute unit under test on generated test inputs so that all reachable statements are executed any assertion violation gets caught concolic testing approach. In this testing technique we can simultaneously execute a program in concrete and symbolic manners. A part of unit can be tested by generating inputs for a single entry function. The approach used builds on previous work combining symbolic and concrete execution, and more specifically, using such a combination to generate test inputs to explore all feasible execution paths. Concolic testing process this section presents an overview of the original nondistributed concolic testing process that performs static instrumentation of a target program to extract symbolic path formulas.