--%>
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 : What are Literals What are Literals and

    What are Literals and also state their respective types?

    		•
  • Q : What is Concurrency Concurrency : This

    Concurrency: This is a feature of parallel programming. The parts of a program whose executions overlap in time are stated to execute concurrently. Java's thread characteristic support concurrency.

    		•
  • Q : Top command Specify, what does the top

    Specify, what does the top command displays?

    		•
  • Q : Define the term Subordinate inner class

    Define the term Subordinate inner class: It is an inner class which executes well-defined subordinate tasks on behalf of its enclosing class.

    		•
  • Q : Explain Imperative programming

    Imperative programming: The style of programming generally related with languages such as FORTRAN, C, Pascal and so forth. Imperative programming is differentiated from functional programming in that the previous is strongly tied to the idea of variab

    		•
  • Q : Explain Look-and-feel Look-and-feel :

    Look-and-feel: The visual impression and interaction style given by a user interface. This is mainly the responsibility of the window manager (that is, in collaboration with the fundamental operating system) running on a specific computer. This refers

    		•
  • Q : What is Character set encoding

    Character set encoding: The set of values allocated to characters in a character set. Associated characters are frequently grouped with consecutive values, like the digits and alphabetic characters.

    		•
  • Q : Define Scope Scope : A language's scope

    Scope: A language's scope rules establish how broadly variables, methods and classes are visible in a class or program. The local variables contain a scope restricted to the block in which they are stated, for example. Private methods and variables co

    		•
  • Q : Explain While loop While loop: It is

    While loop: It is one of Java's three control structures employed for looping. The other two are: do loop and for loop. The while loop comprises of a Boolean expression and a loop body. The condition is tested prior to the loop body is entered for the

    		•
  • Q : Difference between JavaScript and AJAX

    Write basic difference between JavaScript and AJAX ?

    		•