Program: 64392
Project: 64392
Buggy source:
public void execute() throws BuildException {
  if (target == null || !target.isFile()) {
    throw new BuildException("String_Node_Str" + target);
  }
  final File javaFile=new File(target.toString().substring(0,target.toString().indexOf("String_Node_Str")) + "String_Node_Str");
  if (javaFile.exists() && target.lastModified() < javaFile.lastModified()) {
    project.log("String_Node_Str" + target + "String_Node_Str");
    return;
  }
  cmdl.createArgument().setValue(target.getAbsolutePath());
  if (metahome == null || !metahome.isDirectory()) {
    throw new BuildException("String_Node_Str");
  }
  if (metaworkingdir == null || !metaworkingdir.isDirectory()) {
    throw new BuildException("String_Node_Str");
  }
  if (userclasspath == null) {
    throw new BuildException("String_Node_Str");
  }
  final Path classpath=cmdl.createClasspath();
  classpath.createPathElement().setLocation(metahome.getAbsolutePath() + "String_Node_Str");
  classpath.createPathElement().setLocation(metahome.getAbsolutePath() + "String_Node_Str");
  classpath.createPathElement().setLocation(metahome.getAbsolutePath() + "String_Node_Str");
  final Commandline.Argument arg=cmdl.createVmArgument();
  arg.setValue("String_Node_Str");
  arg.setValue("String_Node_Str" + metaworkingdir.getAbsolutePath());
  arg.setValue("String_Node_Str" + metahome.getAbsolutePath());
  arg.setValue("String_Node_Str");
  arg.setValue("String_Node_Str");
  arg.setValue("String_Node_Str");
  arg.setValue("String_Node_Str");
  arg.setValue("String_Node_Str");
  arg.setValue("String_Node_Str");
  arg.setValue("String_Node_Str");
  arg.setValue("String_Node_Str");
  arg.setValue("String_Node_Str" + userclasspath);
  final Execute process=new Execute(new LogStreamHandler(this,Project.MSG_INFO,Project.MSG_INFO),null);
  log(cmdl.toString(),Project.MSG_VERBOSE);
  process.setCommandline(cmdl.getCommandline());
  try {
    try {
      if (process.execute() != 0) {
        throw new BuildException("String_Node_Str");
      }
    }
  finally {
      if (cleanupHack) {
        final File oo393=new File(javaFile.getParentFile(),"String_Node_Str");
        if (oo393.exists()) {
          project.log("String_Node_Str" + oo393.getName());
          oo393.delete();
        }
        final File sunjj=new File(javaFile.getParentFile(),"String_Node_Str" + javaFile.getName().substring(0,javaFile.getName().indexOf("String_Node_Str")) + "String_Node_Str");
        if (sunjj.exists()) {
          project.log("String_Node_Str" + sunjj.getName());
          sunjj.delete();
        }
      }
    }
  }
 catch (  IOException e) {
    throw new BuildException("String_Node_Str" + e);
  }
}

Fixed version (ground truth):
public void execute() throws BuildException {
  if (target == null || !target.isFile()) {
    throw new BuildException("String_Node_Str" + target);
  }
  final File javaFile=new File(target.toString().substring(0,target.toString().indexOf("String_Node_Str")) + "String_Node_Str");
  if (javaFile.exists() && target.lastModified() < javaFile.lastModified()) {
    project.log("String_Node_Str" + target + "String_Node_Str");
    return;
  }
  cmdl.createArgument().setValue(target.getAbsolutePath());
  if (metahome == null || !metahome.isDirectory()) {
    throw new BuildException("String_Node_Str");
  }
  if (metaworkingdir == null || !metaworkingdir.isDirectory()) {
    throw new BuildException("String_Node_Str");
  }
  if (userclasspath == null) {
    throw new BuildException("String_Node_Str");
  }
  final Path classpath=cmdl.createClasspath();
  classpath.createPathElement().setLocation(metahome.getAbsolutePath() + "String_Node_Str");
  classpath.createPathElement().setLocation(metahome.getAbsolutePath() + "String_Node_Str");
  classpath.createPathElement().setLocation(metahome.getAbsolutePath() + "String_Node_Str");
  final Commandline.Argument arg=cmdl.createVmArgument();
  arg.setValue("String_Node_Str");
  arg.setValue("String_Node_Str" + metaworkingdir.getAbsolutePath());
  arg.setValue("String_Node_Str" + metahome.getAbsolutePath());
  arg.setValue("String_Node_Str");
  arg.setValue("String_Node_Str");
  arg.setValue("String_Node_Str");
  arg.setValue("String_Node_Str");
  arg.setValue("String_Node_Str");
  arg.setValue("String_Node_Str");
  arg.setValue("String_Node_Str");
  arg.setValue("String_Node_Str");
  arg.setValue("String_Node_Str" + userclasspath);
  final Execute process=new Execute(new LogStreamHandler(this,Project.MSG_INFO,Project.MSG_INFO),null);
  log(cmdl.toString(),Project.MSG_VERBOSE);
  process.setCommandline(cmdl.getCommandline());
  try {
    try {
      if (process.execute() != 0) {
        throw new BuildException("String_Node_Str");
      }
    }
  finally {
      if (cleanupHack) {
        final File oo393=new File(javaFile.getParent(),"String_Node_Str");
        if (oo393.exists()) {
          project.log("String_Node_Str" + oo393.getName());
          oo393.delete();
        }
        final File sunjj=new File(javaFile.getParent(),"String_Node_Str" + javaFile.getName().substring(0,javaFile.getName().indexOf("String_Node_Str")) + "String_Node_Str");
        if (sunjj.exists()) {
          project.log("String_Node_Str" + sunjj.getName());
          sunjj.delete();
        }
      }
    }
  }
 catch (  IOException e) {
    throw new BuildException("String_Node_Str" + e);
  }
}