A concolic unit testing engine for c, by koushik sen, darko marinov, and gul agha, further extended the idea to data structures, and first coined the term concolic testing. Cute combines concrete and symbolic execution in a way that avoids redundant test. In those cases, symbolic execution degrades gracefully by leveraging concrete values into a form of partial symbolic execution. Cute combines concrete and symbolic execution in a way that avoids redundant test cases as well as false. 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. The paper addresses the problem of automating unit testing with memory graphs as inputs. A concolic unit testing engine for c university of.
To see the statistics about branch coverage and runtime execute. Concolic testing for functional languages aggelos giantsios 1nikolaos papaspyrou konstantinos sagonas. We have implemented hybrid concolic testing on top of the cute tool for concolic testing 25 and applied it to achieve high branch coverage for c programs. 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. 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. Citeseerx document details isaac councill, lee giles, pradeep teregowda. Fixes several bugs in cevelop and cute this is the first 64bitonly release since the underlying eclipse platform dropped 32bit support eclipse 201812 4. Due to the combination of concrete and symbolic execution, dynamic symbolic execution is also sometimes referred to as concolic testing. It combines an alternating variable hill climb with a set of constraint solving rules for pointer inputs. As a side effect, unit tested code often has a better structure.
Esecfse05 proceedings of the joint 10th european software engineering conference esec and th acm sigsoft symposium on the foundations of software engineering fse. These tools dart and cute, exe applied concolic testing to unit testing of c programs. Cute, a concolic unit testing engine for c and java, is a tool to systematically and automatically test sequential c programs including pointers and concurrent java programs. Industrial application of concolic testing on embedded. Joint work with gul agha, patrice godefroid, nils klarlund. 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. Crest uses cil to instrument c programs for testing. Make pdf booklets, impose nup pages, combine pdf files, add watermarks, edit forms, add comments, add headers and footers, rearrange pages, security, digital signature, scan, ftp and much more. Jonathan salwan software testing and concolic execution. Concolic testing is a hybrid software verification technique that performs symbolic execution.
The concolic testing process proceeds via the following steps. 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. Hybrid concolic testing department of computer science. Automated analysis of industrial embedded software. In our preliminary experiments, we compare random, concolic, and hybrid concolic testing on the vim text editor 150k lines of c code and on an implementation of the redblack tree data. Concolic testing heapmanipulating programs technical report. Symbolic execution is used in conjunction with an automated theorem prover or constraint solver based. Esecfse05 proceedings of the joint 10th european software engineering conference. Automated unit testing of large industrial embedded software. Academic and industrial conference practice and research techniques 95 104 abstract whilst there is much evidence that both concolic and search based testing can outperform random testing, there has been little work demonstrating the effectiveness of either technique with complete real world software applications. Because of this, cute can detect complex arithmetic and pointer errors. Our algorithm generates test inputs automatically by interleaving random testing until saturation with bounded exhaustive symbolic exploration of program points.
Software testing and concolic execution shellstorm. Offensivecon18 vitaly nikolenko concolic testing for. Dart cute full name directed automated random testing concolic unit testing engine published date jun. Handling dynamic data structures in search based testing 2008. About me software testing bugs hunting concolic execution ir and constraints solver proof of concept end goal plan taint syscall entries spread the taints constraints solve constraints with z3 goal. Cute, a concolic unit testing engine for c and java, is a tool to systematically and automatically test. Targeting code coverage is a reasonable goal for a testing routine, since. Related work dart cute full name directed automated random testing concolic unit testing engine published date jun.
The tester or the testing tool is only interested in the input and output. The entry function may contain pointer arguments, in which case the inputs to the unit are memory graphs. Scalable automated methods for software reliability. To run jcute on a 32bit system, simply download and unzip the binary distribution from the jcute homepage. To run jcute on a 32bit system, download and unzip the binary distribution. We present hybrid concolic testing, an algorithm that interleaves random testing with concolic execution to obtain both a deep and a wide exploration of program state space. The idea is to look at the program or function which is to be tested as a black box. The result is a lightweight and efficient method, as shown in the results from a case study, which compares the method to cute, a concolic unit testing tool. Choose cutepdf writer as the printer in the print dialog box, and click print.
In section 3, we introduce the running example of this paper. Cuter is a versatile testing environment for optimization and linear algebra solvers. A concolic testing strategy is a function which decides when to apply random testing or symbolic execution, and if it is. Test input generation for java containers using state matching. Developed by koushik sen at the university of illinois at urbanachampaign in 2005, the concept of concolic testing originated with the dart system and the term concolic first occurred in cute. Can we make a concolic testing tool that 1 avoids path explosion and. Concolic testing rst generates random values for primitive inputs and the null value for pointer inputs. Cute combines concrete and symbolic execution in a way that avoids redundant test cases as well as false warnings. I completely understand the way concolic testing works. For a small fee you can get the industrys best online privacy or publicly promote your presentations and slide shows with top rankings. Pdf cute, a concolic unit testing engine for c and java, is a tool to systematically and automatically test sequential c. The package contains a collection of test problems, along with fortran 77, fortran 9095 and matlab tools intended to help developers design, compare and improve new and existing solvers.
Cutepdf convert to pdf for free, free pdf utilities. Automated unit testing of large industrial embedded software using concolic testing. Concolic testing heapmanipulating programs technical report long h. Introduction unit testing is a method for modular testing of a programs functional behavior. Mar 19, 2018 offensivecon18 vitaly nikolenko concolic testing for kernel fuzzing and vulnerability discovery. It is shown to be more costeffective than random testing or symbolic execution sometimes. In unit testing, a program is decomposed into units which are. The generated symbolic constraints are solved using yices to generate input that drive the test execution down new, unexplored. The link cute and jcute that goes to cute appears to be broken 144. In proceedings of the 10th european software engineering conference held jointly with th acm sigsoft international symposium on foundations of software engineering, 2005 3 julian schutte, rafael fedler, dennis titze. Symbolic execution for software testing in practice.
Crest works by inserting instrumentation code using cil into a target program to perform symbolic execution concurrently with the concrete execution. The current work develops a method to represent and track. A concolic unit testing engine for c bibsonomy whether your application is business, howto, education, medicine, school, church, sales, marketing, online training or just for fun, powershow. Now includes the form filler for free oneoff license fee. Concolic unit testing and explicit path modelchecking tools tools paper koushik sen and gul agha university of illinois at urbanachampaign, usa. Testing with manually generated test cases is the primary technique used in industry to improve reliability of softwarein fact, such testing is reported to account for over half of the typical cost of software development. A program is decomposed into units, where each unit is a collection of functions, and the units are independently. Cute s speed is t for unit testing, but cute does not support formal speci cations. Java developers are used to unit testing because of junit and its tight integration into ides like eclipse. Automated unit testing supports high quality of program code, even under inevitable change and refactoring.
A part of unit can be tested by generating inputs for a single entry function. 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. Fast and sound random generation for automated testing and aug 30, 2009. The remainder of this paper will use the terms concolic testing and dynamic symbolic execution interchangeably. Cute, a concolic unit testing engine for c and java, is a tool to systematically and automatically test sequential c programs in.
Enter a new file name for your pdf and select options. A modified distribution of cil is included in directory cil. It thus combines the ability of random search to reach deep. In unit testing, a program is decomposed into units which are collections of functions.
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