code: //==============================================================================
  //	
  //	Copyright (c) 2002-
  //	Authors:
  //	* Dave Parker <david.parker@comlab.ox.ac.uk> (University of Oxford)
  //	
  //------------------------------------------------------------------------------
  //	
  //	This file is part of PRISM.
  //	
  //	PRISM is free software; you can redistribute it and/or modify
  //	it under the terms of the GNU General Public License as published by
  //	the Free Software Foundation; either version 2 of the License, or
  //	(at your option) any later version.
  //	
  //	PRISM is distributed in the hope that it will be useful,
  //	but WITHOUT ANY WARRANTY; without even the implied warranty of
  //	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  //	GNU General Public License for more details.
  //	
  //	You should have received a copy of the GNU General Public License
  //	along with PRISM; if not, write to the Free Software Foundation,
  //	Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  //	
  //==============================================================================
  
  package prism;
  
  import java.io.*;
  
  import parser.ast.*;
  
  /**
   * Example class demonstrating how to control PRISM programmatically,
   * i.e. through the "API" exposed by the class prism.Prism.
   * (this now uses the newer version of the API, released after PRISM 4.0.3)
   * Test like this:
   * PRISM_MAINCLASS=prism.PrismTest bin/prism ../prism-examples/polling/poll2.sm ../prism-examples/polling/poll3.sm
   */
  public class PrismTest
  {
  	public static void main(String args[])
  	{
  		new PrismTest().go(args);
  	}
  	
  	public void go(String args[])
  	{
  		try {
  			PrismLog mainLog;
  			Prism prism;
  			ModulesFile modulesFile;
  			PropertiesFile propertiesFile;
  			Result result;
  			
  			// Init
  			mainLog = new PrismFileLog("stdout");
  			prism = new Prism(mainLog);
  			prism.initialise();
  			
  			// Parse/load model 1
  			// NB: no need to build explicitly - it will be done if/when neeed
  			modulesFile = prism.parseModelFile(new File(args[0]));
  			prism.loadPRISMModel(modulesFile);
  			
  			// Parse a prop, check on model 1
  			propertiesFile = prism.parsePropertiesString(modulesFile, "P=?[F<=0.1 s1=1]");
  			result = prism.modelCheck(propertiesFile, propertiesFile.getPropertyObject(0));
  			System.out.println(result.getResult());
  			
  			// Parse another prop, check on model 1
  			propertiesFile = prism.parsePropertiesString(modulesFile, "P=?[F<=0.1 s1=1]");
  			result = prism.modelCheck(propertiesFile, propertiesFile.getPropertyObject(0));
  			System.out.println(result.getResult());
  			
  			// Parse/load model 2
  			modulesFile = prism.parseModelFile(new File(args[1]));
  			prism.loadPRISMModel(modulesFile);
  			
  			// Parse a prop, check on model 2
  			propertiesFile = prism.parsePropertiesString(modulesFile, "P=?[F<=0.1 s1=1]");
  			result = prism.modelCheck(propertiesFile, propertiesFile.getPropertyObject(0));
  			System.out.println(result.getResult());
  			
  			// Close down
  			prism.closeDown();
  		}
  		catch (FileNotFoundException e) {
  			System.out.println("Error: " + e.getMessage());
  			System.exit(1);
  		}
  		catch (PrismException e) {
  			System.out.println("Error: " + e.getMessage());
  			System.exit(1);
  		}
  	}
  }
  