Program: 32244
Project: 32244
Buggy source:
/** 
 * {@inheritDoc} 
 */
@Override public void execute() throws MojoExecutionException, MojoFailureException {
  try {
    checkUncommittedChanges();
    final String hotfixBranches=executeGitCommandReturn("String_Node_Str","String_Node_Str","String_Node_Str" + gitFlowConfig.getHotfixBranchPrefix() + "String_Node_Str");
    if (StringUtils.isBlank(hotfixBranches)) {
      throw new MojoFailureException("String_Node_Str");
    }
    String[] branches=hotfixBranches.split("String_Node_Str");
    List<String> numberedList=new ArrayList<String>();
    StringBuilder str=new StringBuilder("String_Node_Str").append(LS);
    for (int i=0; i < branches.length; i++) {
      str.append((i + 1) + "String_Node_Str" + branches[i]+ LS);
      numberedList.add("String_Node_Str" + (i + 1));
    }
    str.append("String_Node_Str");
    String hotfixNumber=null;
    try {
      while (StringUtils.isBlank(hotfixNumber)) {
        hotfixNumber=prompter.prompt(str.toString(),numberedList);
      }
    }
 catch (    PrompterException e) {
      getLog().error(e);
    }
    String hotfixBranchName=null;
    if (hotfixNumber != null) {
      int num=Integer.parseInt(hotfixNumber);
      hotfixBranchName=branches[num - 1];
    }
    if (StringUtils.isBlank(hotfixBranchName)) {
      throw new MojoFailureException("String_Node_Str");
    }
    gitCheckout(hotfixBranchName);
    if (!skipTestProject) {
      mvnCleanTest();
    }
    gitCheckout(gitFlowConfig.getProductionBranch());
    gitMergeNoff(hotfixBranchName);
    if (!skipTag) {
      gitTag(gitFlowConfig.getVersionTagPrefix() + hotfixBranchName.replaceFirst(gitFlowConfig.getHotfixBranchPrefix(),"String_Node_Str"),"String_Node_Str");
    }
    final String releaseBranch=executeGitCommandReturn("String_Node_Str","String_Node_Str","String_Node_Str","String_Node_Str" + gitFlowConfig.getReleaseBranchPrefix() + "String_Node_Str");
    if (StringUtils.isNotBlank(releaseBranch)) {
      gitCheckout(releaseBranch);
      gitMergeNoff(hotfixBranchName);
    }
 else {
      gitCheckout(gitFlowConfig.getDevelopmentBranch());
      gitMergeNoff(hotfixBranchName);
      final String currentVersion=getCurrentProjectVersion();
      String nextSnapshotVersion=null;
      try {
        final DefaultVersionInfo versionInfo=new DefaultVersionInfo(currentVersion);
        nextSnapshotVersion=versionInfo.getNextVersion().getSnapshotVersionString();
      }
 catch (      VersionParseException e) {
        if (getLog().isDebugEnabled()) {
          getLog().debug(e);
        }
      }
      if (StringUtils.isBlank(nextSnapshotVersion)) {
        throw new MojoFailureException("String_Node_Str");
      }
      mvnSetVersions(nextSnapshotVersion);
      gitCommit("String_Node_Str");
    }
    if (installProject) {
      mvnCleanInstall();
    }
    if (!keepBranch) {
      gitBranchDelete(hotfixBranchName);
    }
  }
 catch (  CommandLineException e) {
    getLog().error(e);
  }
}

Fixed version (ground truth):
/** 
 * {@inheritDoc} 
 */
@Override public void execute() throws MojoExecutionException, MojoFailureException {
  try {
    checkUncommittedChanges();
    final String hotfixBranches=gitFindBranches(gitFlowConfig.getHotfixBranchPrefix());
    if (StringUtils.isBlank(hotfixBranches)) {
      throw new MojoFailureException("String_Node_Str");
    }
    String[] branches=hotfixBranches.split("String_Node_Str");
    List<String> numberedList=new ArrayList<String>();
    StringBuilder str=new StringBuilder("String_Node_Str").append(LS);
    for (int i=0; i < branches.length; i++) {
      str.append((i + 1) + "String_Node_Str" + branches[i]+ LS);
      numberedList.add("String_Node_Str" + (i + 1));
    }
    str.append("String_Node_Str");
    String hotfixNumber=null;
    try {
      while (StringUtils.isBlank(hotfixNumber)) {
        hotfixNumber=prompter.prompt(str.toString(),numberedList);
      }
    }
 catch (    PrompterException e) {
      getLog().error(e);
    }
    String hotfixBranchName=null;
    if (hotfixNumber != null) {
      int num=Integer.parseInt(hotfixNumber);
      hotfixBranchName=branches[num - 1];
    }
    if (StringUtils.isBlank(hotfixBranchName)) {
      throw new MojoFailureException("String_Node_Str");
    }
    gitCheckout(hotfixBranchName);
    if (!skipTestProject) {
      mvnCleanTest();
    }
    gitCheckout(gitFlowConfig.getProductionBranch());
    gitMergeNoff(hotfixBranchName);
    if (!skipTag) {
      gitTag(gitFlowConfig.getVersionTagPrefix() + hotfixBranchName.replaceFirst(gitFlowConfig.getHotfixBranchPrefix(),"String_Node_Str"),"String_Node_Str");
    }
    final String releaseBranch=executeGitCommandReturn("String_Node_Str","String_Node_Str","String_Node_Str","String_Node_Str" + gitFlowConfig.getReleaseBranchPrefix() + "String_Node_Str");
    if (StringUtils.isNotBlank(releaseBranch)) {
      gitCheckout(releaseBranch);
      gitMergeNoff(hotfixBranchName);
    }
 else {
      gitCheckout(gitFlowConfig.getDevelopmentBranch());
      gitMergeNoff(hotfixBranchName);
      final String currentVersion=getCurrentProjectVersion();
      String nextSnapshotVersion=null;
      try {
        final DefaultVersionInfo versionInfo=new DefaultVersionInfo(currentVersion);
        nextSnapshotVersion=versionInfo.getNextVersion().getSnapshotVersionString();
      }
 catch (      VersionParseException e) {
        if (getLog().isDebugEnabled()) {
          getLog().debug(e);
        }
      }
      if (StringUtils.isBlank(nextSnapshotVersion)) {
        throw new MojoFailureException("String_Node_Str");
      }
      mvnSetVersions(nextSnapshotVersion);
      gitCommit("String_Node_Str");
    }
    if (installProject) {
      mvnCleanInstall();
    }
    if (!keepBranch) {
      gitBranchDelete(hotfixBranchName);
    }
  }
 catch (  CommandLineException e) {
    getLog().error(e);
  }
}