Program: 61593
Project: 61593
Buggy source:
/** 
 * @param removeMode
 * @return
 * @throws Exception
 */
public JGenProg createEngine(boolean removeMode) throws Exception {
  MutationSupporter mutSupporter=new MutationSupporter(getFactory());
  List<AbstractFixSpaceProcessor<?>> ingredientProcessors=new ArrayList<AbstractFixSpaceProcessor<?>>();
  JGenProg gploop=null;
  if (removeMode) {
    gploop=new JKali(mutSupporter,projectFacade);
    gploop.setRepairActionSpace(new RemoveRepairOperatorSpace());
    ConfigurationProperties.properties.setProperty("String_Node_Str","String_Node_Str");
    ConfigurationProperties.properties.setProperty("String_Node_Str","String_Node_Str");
    ConfigurationProperties.properties.setProperty("String_Node_Str","String_Node_Str");
  }
 else {
    gploop=new JGenProg(mutSupporter,projectFacade);
    gploop.setRepairActionSpace(new UniformRandomRepairOperatorSpace());
    String scope=ConfigurationProperties.properties.getProperty("String_Node_Str").toLowerCase();
    if ("String_Node_Str".equals(scope)) {
      gploop.setFixspace(new GlobalBasicFixSpace(ingredientProcessors));
    }
 else     if ("String_Node_Str".equals(scope)) {
      gploop.setFixspace(new PackageBasicFixSpace(ingredientProcessors));
    }
 else {
      gploop.setFixspace(new LocalFixSpace(ingredientProcessors));
    }
  }
  gploop.setPopulationControler(new FitnessPopulationController());
  ingredientProcessors.add(new SingleStatementFixSpaceProcessor());
  gploop.setVariantFactory(new ProgramVariantFactory(ingredientProcessors));
  gploop.setProgramValidator(new ProcessValidator());
  return gploop;
}

Fixed version (ground truth):
/** 
 * @param removeMode
 * @return
 * @throws Exception
 */
public JGenProg createEngine(boolean removeMode) throws Exception {
  MutationSupporter mutSupporter=new MutationSupporter(getFactory());
  List<AbstractFixSpaceProcessor<?>> ingredientProcessors=new ArrayList<AbstractFixSpaceProcessor<?>>();
  ingredientProcessors.add(new SingleStatementFixSpaceProcessor());
  JGenProg gploop=null;
  if (removeMode) {
    gploop=new JKali(mutSupporter,projectFacade);
    gploop.setRepairActionSpace(new RemoveRepairOperatorSpace());
    ConfigurationProperties.properties.setProperty("String_Node_Str","String_Node_Str");
    ConfigurationProperties.properties.setProperty("String_Node_Str","String_Node_Str");
    ConfigurationProperties.properties.setProperty("String_Node_Str","String_Node_Str");
  }
 else {
    gploop=new JGenProg(mutSupporter,projectFacade);
    gploop.setRepairActionSpace(new UniformRandomRepairOperatorSpace());
    String scope=ConfigurationProperties.properties.getProperty("String_Node_Str").toLowerCase();
    if ("String_Node_Str".equals(scope)) {
      gploop.setFixspace(new GlobalBasicFixSpace(ingredientProcessors));
    }
 else     if ("String_Node_Str".equals(scope)) {
      gploop.setFixspace(new PackageBasicFixSpace(ingredientProcessors));
    }
 else {
      gploop.setFixspace(new LocalFixSpace(ingredientProcessors));
    }
  }
  gploop.setPopulationControler(new FitnessPopulationController());
  gploop.setVariantFactory(new ProgramVariantFactory(ingredientProcessors));
  gploop.setProgramValidator(new ProcessValidator());
  return gploop;
}