Program: 73971
Project: 73971
Buggy source:
/** 
 * Initializes the data members and checks if the parameters of the actor are valid.
 * @exception IllegalActionException If the parameters of theactor are invalid, or if the file with the socket information cannot be written to disk.
 */
public void preinitialize() throws IllegalActionException {
  super.preinitialize();
  worDir=Simulator.resolveDirectory(getContainer(),cutQuotationMarks(workingDirectory.getExpression()));
  if (!new File(worDir).isDirectory()) {
    String em="String_Node_Str" + LS + "String_Node_Str"+ worDir+ "String_Node_Str"+ LS+ "String_Node_Str"+ this.getFullName()+ "String_Node_Str";
    throw new IllegalActionException(this,em);
  }
  final String simCon=socketConfigurationFile.stringValue();
  porNo=Integer.valueOf(socketPortNumber.getExpression());
  try {
    final int timOutMilSec=Integer.valueOf(socketTimeout.getExpression());
    if (timOutMilSec <= 0) {
      final String em="String_Node_Str" + LS + "String_Node_Str"+ timOutMilSec+ "String_Node_Str";
      throw new IllegalActionException(this,em);
    }
    if (porNo < 0) {
      server=new Server(timOutMilSec);
    }
 else {
      server=new Server(porNo,timOutMilSec);
    }
    porNo=server.getLocalPort();
  }
 catch (  java.io.IOException e) {
    if (server != null) {
      try {
        server.close();
      }
 catch (      java.io.IOException e2) {
      }
    }
    throw new IllegalActionException(this,e,e.getMessage());
  }
  XMLWriter xmlWri=new XMLWriter(worDir,simCon,porNo);
  try {
    xmlWri.write();
  }
 catch (  java.io.FileNotFoundException e) {
    String em="String_Node_Str" + new File(worDir,simCon).getAbsolutePath() + "String_Node_Str";
    throw new IllegalActionException(this,e,em);
  }
catch (  java.io.IOException e) {
    throw new IllegalActionException(this,e,e.toString());
  }
}

Fixed version (ground truth):
/** 
 * Initializes the data members and checks if the parameters of the actor are valid.
 * @exception IllegalActionException If the parameters of theactor are invalid, or if the file with the socket information cannot be written to disk.
 */
public void preinitialize() throws IllegalActionException {
  super.preinitialize();
  clientTerminated=false;
  terminationMessage="String_Node_Str";
  warWin=null;
  worDir=Simulator.resolveDirectory(getContainer(),cutQuotationMarks(workingDirectory.getExpression()));
  if (!new File(worDir).isDirectory()) {
    String em="String_Node_Str" + LS + "String_Node_Str"+ worDir+ "String_Node_Str"+ LS+ "String_Node_Str"+ this.getFullName()+ "String_Node_Str";
    throw new IllegalActionException(this,em);
  }
  final String simCon=socketConfigurationFile.stringValue();
  porNo=Integer.valueOf(socketPortNumber.getExpression());
  try {
    final int timOutMilSec=Integer.valueOf(socketTimeout.getExpression());
    if (timOutMilSec <= 0) {
      final String em="String_Node_Str" + LS + "String_Node_Str"+ timOutMilSec+ "String_Node_Str";
      throw new IllegalActionException(this,em);
    }
    if (porNo < 0) {
      server=new Server(timOutMilSec);
    }
 else {
      server=new Server(porNo,timOutMilSec);
    }
    porNo=server.getLocalPort();
  }
 catch (  java.io.IOException e) {
    if (server != null) {
      try {
        server.close();
      }
 catch (      java.io.IOException e2) {
      }
    }
    throw new IllegalActionException(this,e,e.getMessage());
  }
  XMLWriter xmlWri=new XMLWriter(worDir,simCon,porNo);
  try {
    xmlWri.write();
  }
 catch (  java.io.FileNotFoundException e) {
    String em="String_Node_Str" + new File(worDir,simCon).getAbsolutePath() + "String_Node_Str";
    throw new IllegalActionException(this,e,em);
  }
catch (  java.io.IOException e) {
    throw new IllegalActionException(this,e,e.toString());
  }
  _startSimulation();
}