Program: 12022
Project: 12022
Buggy source:
@Override public List<TestMethodMeta> getLackingTestMethodMetaList(String currentTestCaseSourceCode){
  List<TestMethodMeta> dest=new ArrayList<TestMethodMeta>();
  String checkTargetSourceCode=TrimFilterUtil.doAllFilters(currentTestCaseSourceCode);
  if (!checkTargetSourceCode.matches(RegExp.Anything_ZeroOrMore_Min + "String_Node_Str" + RegExp.Anything_ZeroOrMore_Min)) {
    TestMethodMeta testMethod=new TestMethodMeta();
    testMethod.classMeta=targetClassMeta;
    testMethod.isTypeTest=true;
    dest.add(testMethod);
  }
  if (targetClassMeta.constructors.size() > 0) {
    ConstructorMeta notPrivateConstructor=null;
    for (    ConstructorMeta constructor : targetClassMeta.constructors) {
      if (constructor.accessModifier != AccessModifier.Private) {
        notPrivateConstructor=constructor;
        break;
      }
    }
    if (notPrivateConstructor != null) {
      if (!checkTargetSourceCode.matches(RegExp.Anything_ZeroOrMore_Min + "String_Node_Str" + RegExp.Anything_ZeroOrMore_Min)) {
        TestMethodMeta testMethod=new TestMethodMeta();
        testMethod.classMeta=targetClassMeta;
        testMethod.isInstantiationTest=true;
        dest.add(testMethod);
      }
    }
  }
  for (  MethodMeta methodMeta : targetClassMeta.methods) {
    TestMethodMeta testMethodMeta=new TestMethodMeta();
    testMethodMeta.methodMeta=methodMeta;
    String testMethodNamePrefix=testMethodGenerator.getTestMethodNamePrefix(testMethodMeta);
    if (!checkTargetSourceCode.matches(RegExp.Anything_ZeroOrMore_Min + testMethodNamePrefix.replaceAll("String_Node_Str","String_Node_Str") + "String_Node_Str"+ RegExp.Anything_ZeroOrMore_Min)) {
      if (config.target.isAccessorExcluded && methodMeta.isAccessor) {
        continue;
      }
      if ((methodMeta.accessModifier == AccessModifier.Public && config.target.isPublicMethodRequired) || (methodMeta.accessModifier == AccessModifier.Protected && config.target.isProtectedMethodRequired) || (methodMeta.accessModifier == AccessModifier.PackageLocal && config.target.isPackageLocalMethodRequired)) {
        dest.add(testMethodGenerator.getTestMethodMeta(methodMeta));
        if (config.target.isExceptionPatternRequired) {
          for (          ExceptionMeta exceptionMeta : methodMeta.throwsExceptions) {
            dest.add(testMethodGenerator.getTestMethodMeta(methodMeta,exceptionMeta));
          }
        }
      }
    }
  }
  return dest;
}

Fixed version (ground truth):
@Override public List<TestMethodMeta> getLackingTestMethodMetaList(String currentTestCaseSourceCode){
  List<TestMethodMeta> dest=new ArrayList<TestMethodMeta>();
  String checkTargetSourceCode=TrimFilterUtil.doAllFilters(currentTestCaseSourceCode);
  if (!checkTargetSourceCode.matches(RegExp.Anything_ZeroOrMore_Min + "String_Node_Str" + RegExp.Anything_ZeroOrMore_Min)) {
    TestMethodMeta testMethod=new TestMethodMeta();
    testMethod.classMeta=targetClassMeta;
    testMethod.isTypeTest=true;
    dest.add(testMethod);
  }
  if (targetClassMeta.constructors.size() > 0) {
    ConstructorMeta notPrivateConstructor=null;
    for (    ConstructorMeta constructor : targetClassMeta.constructors) {
      if (constructor.accessModifier != AccessModifier.Private) {
        notPrivateConstructor=constructor;
        break;
      }
    }
    if (notPrivateConstructor != null) {
      if (!checkTargetSourceCode.matches(RegExp.Anything_ZeroOrMore_Min + "String_Node_Str" + RegExp.Anything_ZeroOrMore_Min)) {
        TestMethodMeta testMethod=new TestMethodMeta();
        testMethod.classMeta=targetClassMeta;
        testMethod.isInstantiationTest=true;
        dest.add(testMethod);
      }
    }
  }
  for (  MethodMeta methodMeta : targetClassMeta.methods) {
    TestMethodMeta testMethodMeta=new TestMethodMeta();
    testMethodMeta.methodMeta=methodMeta;
    String testMethodNamePrefix=testMethodGenerator.getTestMethodNamePrefix(testMethodMeta);
    String regExpForDiscriminateOverloadMethods="String_Node_Str";
    if (!config.testMethodName.isReturnRequired) {
      String argDelimiter=Matcher.quoteReplacement(config.testMethodName.argsAreaDelimiter);
      regExpForDiscriminateOverloadMethods="String_Node_Str" + argDelimiter + "String_Node_Str";
    }
    String regExpForCheckAlreadyExists=RegExp.Anything_ZeroOrMore_Min + Matcher.quoteReplacement(testMethodNamePrefix) + regExpForDiscriminateOverloadMethods+ RegExp.Anything_ZeroOrMore_Min;
    if (!checkTargetSourceCode.matches(regExpForCheckAlreadyExists)) {
      if (config.target.isAccessorExcluded && methodMeta.isAccessor) {
        continue;
      }
      if ((methodMeta.accessModifier == AccessModifier.Public && config.target.isPublicMethodRequired) || (methodMeta.accessModifier == AccessModifier.Protected && config.target.isProtectedMethodRequired) || (methodMeta.accessModifier == AccessModifier.PackageLocal && config.target.isPackageLocalMethodRequired)) {
        dest.add(testMethodGenerator.getTestMethodMeta(methodMeta));
        if (config.target.isExceptionPatternRequired) {
          for (          ExceptionMeta exceptionMeta : methodMeta.throwsExceptions) {
            dest.add(testMethodGenerator.getTestMethodMeta(methodMeta,exceptionMeta));
          }
        }
      }
    }
  }
  return dest;
}