--%>

State-space Reduction in Promela model

State-space Reduction: Two language statements are used to reduce the number of states in a Promela model: atomic and d-step.

1553_state space.jpg

Atomic is used to group statements of a particular process into one atomic sequence. The statements are executed in a single step and are not interleaved with statements of other processes. The atomicity is broken if any of the statements is blocking. That is, statements of other processes can be interleaved in between.

d-step can also be used to execute a number of statements in one step. The difference is that no intermediate states are generated or stored. If one of the statements blocks, this is considered a runtime error.

   Related Questions in Programming Languages

  • Q : What is a Port Port: It is a number

    Port: It is a number employed by a procedure to communicate with the other procedure across a network, employing the Transmission Control Protocol (abbreviated as TCP) or User Datagram Protocol (abbreviated as UDP), for instance.

  • Q : Types of buffering supported by UNIX

    Explain different types of buffering which is supported by the UNIX?

  • Q : Write a recursive implementation of

    Assignment 5 Selecting Array Elements Implement the following C++ code in assembly language, using the block-structured .IF and .WHILE directives. Assume that all variables are 32-bit signed integers: int array[] = {10,60,20,33,72,89,45,65,72,18}; int sample = 50; intArraySize = s

  • Q : State the term SOAP and explain its

    State the term SOAP and explain its relation with XML.

  • Q : Problem on COBOL source code errors

    There are many errors in the following COBOL source code. Identify the errors and rewrite the program so that it contains no errors:IDENTIFICATION DIVISION   (Full stop required)PROGRAM ID. ERRORS-EXAMPLE.DATA DIVISION    (Fu

  • Q : Program is prone to deadlock when

      Give a brief introduction about the operation of your program and show that you understand the idea behind threads and mutual exclusion variable. Why do we need to use mutual exclusion to control the access of the three global variables? What is the potential p

  • Q : Problem on COBOL if sentence Write a

    Write a COBOL IF sentence to use the values of numeric variables EXAM and COURSEWORK, both assumed to be with format PIC 999 and in the range 0 to 100 and to move the value:“FAIL”, “RC” ( resit coursework), “RE” (r

  • Q : Define Hardware Hardware : It is the

    Hardware: It is the physical devices of a computer system, like its micro-chips, keyboard, disk drives, printer, sound card, and so forth. It is termed `hardware' in contrary to programs, which are termed `software'.

  • Q : State Non-modal Non-modal : In this a

    Non-modal: In this a dialog is non-modal when its parent application is not blocked from additional activity whereas the dialog is being revealed.

  • Q : What is Static initializer Static

    Static initializer: An initializer prefixed with ‘static’ reserved word. The static initializer is stated outside the methods of its enclosing class, and might access only the static fields and methods of its enclosing class.