Deriving test cases directly from the structure of a component or system. A powerful technology that can be used to find security critical bugs in real software. Unlike concrete execution, where the taken path is determined by the input, in symbolic execution the program can take any feasible path. In this paper, we present preliminary results for documenting the impact of research in symbolic execution for automated software testing. Symbolic execution georgia institute of technology. Qadeer, editors, computer aided verification, volume 6806 of lecture notes in computer science, pages 463469. Windows, icons computer software is divided in to two broad categories. Cse 403 software engineering lectures cse home course webs cse 403 course home page. Software engineering is also defined as the field of computer science that deals with the building of software systems which are so large or so complex that they are built by a team. Computer software software of a computer system can be referred as anything which we can feel and see. Software engineering, ppt, semester, engineering computer science engineering cse notes edurev is made by best teachers of computer science engineering cse.
Software engineering, 6th edition, ian sommerville, addisonwesley, isbn 0209815x. Ample crossreferencing and indexing is provided to make the text a servicable reference, but more complete works are recommended. Permission to reproduce or copy all or parts of this material for nonprofit use is granted on the condition that the author and source are credited. Deriving test cases based on testers experience on similar systems or testers. Once a path is explored, it generates and runs a set of test inputs to model the performance of the path. Symbolic execution is typically used in software testing to explore as many. This document is highly rated by computer science engineering cse students and has been viewed 498 times. Critical path method critical path method critical path method critical path method time estimates for activities weeks. King in a 1976 paper as a static analysis technique for software testing.
Componentbased software engineering cbse, also called componentsbased development cbd, is a branch of software engineering that emphasizes the separation of concerns with respect to the wideranging functionality available throughout a given software system. Fundamental ideas seven principles of software engineering. Symbolic execution for software testing in practice preliminary. Current trends type safety gaining acceptance as a viable security component modern program analysis becoming a. Symbolic execution in software engineering powerpoint ppt presentation. Software testing techniques technology maturation and research strategies lu luo school of computer science carnegie mellon university 1 introduction 1 software testing is as old as the hills in the history of digital computers. Managing people powerpoint html lecture 26, risks in software engineering powerpoint html lecture 27, software engineering as. Symbolic execution eventually enumerates all feasible program executions, check assertions on all values of varaibles in a program path, and can prioritize executions of interest.
Software engineering fall 2000 lecture 4 management i. This unit delved into the details of symbolic execution. Deriving test cases directly from a requirement specification or black box test design technique. The foundation for software engineering is the process layer. Sommerville, power point slides for software engineering.
Following are the typical design techniques in software engineering. For example, a run using nasas antares simulator 1 may take. Suzette person, matthew dwyer, sebastian elbaum, corina pasareanu, differential symbolic execution, 16th international symposium on the foundations of software engineering, atlanta, ga, nov. Symbolic execution systems program analysis coursera. Overview software engineering is based on a collection of fundamental principles these principles guide the development of all aspects of software development languages methods tools process project management csci 5801 fall 20mats heimdahl2. Theres a lot of that academic projects that have made a lot of real world impact by discovering important bugs in open source software, for example, by relying on symbolic execution. Symbolic execution for finding bugs symbolic execution and software testing presentation at nasa ames symbolic execution for software. An interpreter follows the program, assuming symbolic values for inputs rather than obtaining actual inputs as normal execution of the program would. The execution requires a selection of paths that are exercised by a set of data values. At some point, symbolic execution will reach the edges of the application. Download powerpoint lecture slides applicationzip 12.
Validation and verification powerpoint html lecture 23, tools for debugging ii for slides, see lecture 20 lecture 24, legal issues powerpoint html lecture 25, management iii. Software engineering process is the glue that holds the technology layers together and enables rational and timely development. Parallel symbolic execution for structural test generation. Combining static analysis and targeted symbolic execution. Programming algorithms data structures software design principles, practices, processes, techniques software architectures software. It provides the interface between the hardware and the users.
Ppt symbolic execution in software engineering powerpoint. Process foundation for software engineering methods provide technical howtos for building software tools provide semiautomatic and automatic support to methods 20 21. This blog contains engineering notes, computer engineering notes,lecture slides, civil engineering lecture notes, mechanical engineering lectures ppt. Software engineeringa layered technology quality focus bedrock that supports software engineering. Combining static analysis and targeted symbolic execution for. Ecs 240 lecture 1 5 contemporary landscape programming languages is one of the oldest cs fields and one of the most vibrant today. Chopped symbolic execution imperial college london. Scribd is the worlds largest social reading and publishing site. Ppt, etc i cluster of n machines continually running sage. During symbolic execution, program state consists of symbolic values for some memory locations. Kiran temple university fox school of business 17, course hero intern. Symbolic execution can be viewed, on the one hand, as a generalization of testing. At some point, symbolic execution will reach the edges of the application library, system, or assembly code calls in some cases, could pull in that code also e. Arcuri, an industrial evaluation of unit test generation.
And the beauty of symbolic execution as a technique is that compared to testing, for example, it. In computer science, symbolic execution also symbolic evaluation is a means of analyzing a. Symposium on foundations of software engineering, esecfse, pages 263272, new york, ny, usa, 2005. The textbook and the accompanying materials posted on this website are freely available for fair use. Symbolic execution is a program analysis technique that was introduced in the 70s 8,15,31,35,46, and that has found. Once the need for software engineering was identified and software engineering recognized as a discipline the late 1970s saw the widespread evolution of software engineering principles. Symbolic execution introduction and handson slideshare. Winner of the standing ovation award for best powerpoint templates from presentations magazine. For example, the chopped symbolic execution described. Symbolic execution enhanced system testing intelligent systems. Abstract state matching is used to avoid generation of. Wei le thank cristian cadar, patrice godefroid, jeff foster, nikolai tillmann, vijay ganesh for some of the slides.
The problem computers were small not much memory and slow not much processing power then. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Symbolic execution symbolic execution refers to execution of program with symbols as argument. Use the seminars themes for your presentation and summary. Sound as is probably apparent, a good symbolic executor requires careful engineering. It is a reusebased approach to defining, implementing and composing loosely coupled independent. Symbolic execution is an automated technique for program analysis that has. In computer science, symbolic execution also symbolic evaluation is a means of analyzing a program to determine what inputs cause each part of a program to execute. The bedrock that supports software engineering is a quality focus. Project management administration os 360 the aim of project management the project manager project planning methods example. Finding real faults in a financial application, in 39th international conference on software engineering, icse 2017, software engineering in practice track, 2017, pp.
The goal of this course is to explain the lowlevel system details from compiler, linker, loader, to os kernel and computer architectures, examine the weakest link in each system component, explore the left bits and bytes after all these transformations, and study the state. Request pdf symbolic execution for software testing in practice preliminary assessment we present results for the impact project focus area on the topic. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that. It takes the program source code and usage profile as inputs and generates a performance distribution that captures the input probability distribution over execution times for the program. In particular, the executor might traverse many different paths in the program, and it must make potentially expensive calls to an smt solver, to determine which paths are feasible. Cs6v81 is a graduate level, research oriented, system and software security course. So the term software engineering first introduced at a conference in late 1960s to discuss the software crisis. Weve seen that symbolic execution employs an appealingly simple algorithm, but with high computational costs. Ppt verification and validation overview powerpoint. Google tech talks november, 16 2007 this talk describes techniques that use model checking and symbolic execution for test input generation. Course informationsyllabus pdf guidelines for all assignments pdf book. The testing of software is an important means of assessing the software to determine its quality.
It is nota miracle algorithm that can autonomously discover any bug. It heuristically explores highprobability and lowprobability paths through probabilistic symbolic execution. Symbolic execution is an automated technique for program analysis that has recently become practical due to advances in constraint solvers. Find materials for this course in the pages linked along the left. Associate professor computer science and electrical engineering gates building 3a314 353 serra mall stanford university stanford, ca 943059030. Symbolic execution for software testing in practice. Representations of software architecture are an enabler for communication between all parties stakeholders interested in the development of a computerbased system the architecture highlights early design decisions that will have a profound impact on all software engineering work that follows and, as important, on the ultimate. A curated list of awesome symbolic execution resources including essential research papers, lectures, videos, and tools. Symbolic execution is a software testing technique that is useful to aid the generation of test data and in proving the program quality. Managing people powerpoint html lecture 26, risks in software engineering powerpoint html lecture 27, software. Symbolic execution and model checking for testing youtube. Generating performance distributions via probabilistic.
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