Program: 72765
Project: 72765
Buggy source:
public void actionPerformed(ActionEvent evt){
  try {
    ModelType modelType=(ModelType)modelConverter.modelType.getChosenValue();
    File file=modelConverter.target.asFile();
    exec.updateStatusBar("String_Node_Str" + modelConverter + "String_Node_Str");
    String inputTemporalFormula=modelConverter.formula.getExpression();
    FormulaType formulaType=(FormulaType)modelConverter.formulaType.getChosenValue();
    int span=((IntToken)modelConverter.span.getToken()).intValue();
    OutputType outputType=(OutputType)modelConverter.outputType.getChosenValue();
    int bufferSize=((IntToken)modelConverter.buffer.getToken()).intValue();
    if (formulaType == FormulaType.Risk || formulaType == FormulaType.Reachability) {
      inputTemporalFormula=modelConverter.generateGraphicalSpec(formulaType);
      formulaType=FormulaType.CTL;
    }
    StringBuffer code=new StringBuffer("String_Node_Str");
    try {
      code.append(modelConverter.generateFile(file,modelType,inputTemporalFormula,formulaType,span,outputType,bufferSize));
    }
 catch (    Exception e) {
      MessageHandler.error("String_Node_Str" + "String_Node_Str",e);
      return;
    }
    File codeFileNameWritten=modelConverter.getCodeFile();
    if (codeFileNameWritten != null) {
      Configuration configuration=getConfiguration();
      URL codeURL=codeFileNameWritten.toURI().toURL();
      if (configuration != null) {
        configuration.openModel(null,codeURL,codeURL.toExternalForm());
      }
    }
    exec.updateStatusBar(code.toString());
    exec.updateStatusBar("String_Node_Str" + "String_Node_Str");
  }
 catch (  Exception ex) {
    MessageHandler.error("String_Node_Str",ex);
  }
}

Fixed version (ground truth):
public void actionPerformed(ActionEvent evt){
  try {
    ModelType modelType=(ModelType)modelConverter.modelType.getChosenValue();
    File file=modelConverter.target.asFile();
    exec.stdout("String_Node_Str" + file);
    exec.updateStatusBar("String_Node_Str" + modelConverter + "String_Node_Str");
    String inputTemporalFormula=modelConverter.formula.getExpression();
    FormulaType formulaType=(FormulaType)modelConverter.formulaType.getChosenValue();
    int span=((IntToken)modelConverter.span.getToken()).intValue();
    OutputType outputType=(OutputType)modelConverter.outputType.getChosenValue();
    int bufferSize=((IntToken)modelConverter.buffer.getToken()).intValue();
    if (formulaType == FormulaType.Risk || formulaType == FormulaType.Reachability) {
      inputTemporalFormula=modelConverter.generateGraphicalSpec(formulaType);
      formulaType=FormulaType.CTL;
    }
    StringBuffer code=new StringBuffer("String_Node_Str");
    try {
      code.append(modelConverter.generateFile(file,modelType,inputTemporalFormula,formulaType,span,outputType,bufferSize));
    }
 catch (    Exception e) {
      MessageHandler.error("String_Node_Str" + "String_Node_Str",e);
      return;
    }
    File codeFileNameWritten=modelConverter.getCodeFile();
    if (codeFileNameWritten != null) {
      Configuration configuration=getConfiguration();
      URL codeURL=codeFileNameWritten.toURI().toURL();
      if (configuration != null) {
        configuration.openModel(null,codeURL,codeURL.toExternalForm());
      }
    }
    exec.updateStatusBar(code.toString());
    exec.updateStatusBar("String_Node_Str" + "String_Node_Str");
  }
 catch (  Exception ex) {
    MessageHandler.error("String_Node_Str",ex);
  }
}