--%>
Assignment Help - homework help

Explain VeriSoft

VeriSoft (Godefroid, 2005) is a model checker for C and C++; other languages can be used, but components in other languages are treated as black boxes. VeriSoft has been used to find defects in very large telecommunications programs (Chandra, Godefroid, and Palm 2002). It is available for download at the VeriSoft website. This package includes a version of VeriSoft for analyzing multiprocess C or C++ programs whose processes communicate via a predefined set of types of communication objects. It is a “stateless” model checker, in that visited states are not saved. It uses clever partial-order reduction search algorithms utilizing program analysis to avoid revisiting states, and guarantees complete coverage of the state space to some depth, while preserving correctness properties. Verisoft can search for four basic types of errors:

  • Deadlocks.
  • Divergences. A divergence occurs when a process does not attempt to communicate with the rest of the system for more than a given (user-specified) amount of time.
  • Livelocks. A livelock occurs when a process is blocked during a sequence of more than a given (user-specified) number of successive states in the state space.
  • Violations of state assertions, the assertions having been stated using a special operation VS_assert(boolean_expr).

To represent non-determinism in the model or environment, VeriSoft provides a special operation VS_toss to express non-deterministic choice, which is like Verify.random in Java PathFinder.

   Related Questions in Programming Languages

  • Q : Define the term Nested class Define the

    Define the term Nested class:  It is a class stated within an enclosing class.

    		•
  • Q : Component which are used in 2nd layer

    What are the different types of component parts which are used in 2nd layer?

    		•
  • Q : Explain Sign extension Sign extension :

    Sign extension: Whenever an integer value from a type with a specific range is stored in a variable with a larger range, Java employs sign extension to determine the resultant value. The most important bit in the original value is employed to fill the

    		•
  • Q : Define Unicode Unicode : It is a 16-bit

    Unicode: It is a 16-bit character set designed to make it simpler to exchange and exhibit information which makes use of a broad range of dissimilar languages and symbols.

    		•
  • Q : Create a BottomUpTwoThreeFourTree class

    You will need to create a BottomUpTwoThreeFourTree class, with a BottomUpTwoThreeTreeFourTree constructor which keeps no parameters. BottomUpTwoThreeTreeFourTree will require an insert(int x) method, which will insert the value 

    		•
  • Q : Who developed Extensible Hyper-Text

    Who developed Extensible Hyper-Text Markup Language? Answer: XHTML (Extensible Hyper-Text Markup Language) was developed by W3C HTML Working Group along with Steven

    		•
  • Q : Role of ScriptManagerProxy control?

    Explain the role of ScriptManagerProxy control?

    		•
  • Q : Maximum clock frequency of the circuit

    What do you mean by the term set up time and hold time constraints? Explain what do they mean? Which one is vital for estimating the maximum clock frequency of the circuit?

    		•
  • Q : Overriding a base class method in

    Explain the way to overriding a base class method in Visual Studio .NET and in Visual Studio 2005.

    		•
  • Q : What is Class body Class body : It is a

    Class body: It is a body of class definition. The body collects the definitions of a class's members that is, methods, fields and nested classes.

    		•