Program: 81818
Project: 81818
Buggy source:
@Override public void execute(MinecraftServer server,ICommandSender var1,String[] var2){
  String helpMsgStorm="String_Node_Str";
  EntityPlayer player=null;
  if (var1 instanceof EntityPlayer) {
    player=(EntityPlayer)var1;
  }
  World world=var1.getEntityWorld();
  int dimension=world.provider.getDimension();
  BlockPos posBlock=var1.getPosition();
  Vec3d posVec=var1.getPositionVector();
  try {
    if (var2[0].equals("String_Node_Str")) {
      if (var2[1].equals("String_Node_Str") && posVec != Vec3d.ZERO) {
        if (dimension == 0) {
          WeatherManagerServer wm=ServerTickHandler.lookupDimToWeatherMan.get(0);
          VolcanoObject vo=new VolcanoObject(wm);
          vo.pos=new Vec3(posVec);
          vo.initFirstTime();
          wm.addVolcanoObject(vo);
          vo.initPost();
          wm.syncVolcanoNew(vo);
          sendCommandSenderMsg(var1,"String_Node_Str");
        }
 else {
          sendCommandSenderMsg(var1,"String_Node_Str");
        }
      }
    }
 else     if (var2[0].equals("String_Node_Str")) {
      if (var2[1].equalsIgnoreCase("String_Node_Str")) {
        WeatherManagerServer wm=ServerTickHandler.lookupDimToWeatherMan.get(dimension);
        sendCommandSenderMsg(var1,"String_Node_Str");
        List<WeatherObject> listStorms=wm.getStormObjects();
        for (int i=0; i < listStorms.size(); i++) {
          WeatherObject wo=listStorms.get(i);
          if (wo instanceof WeatherObject) {
            WeatherObject so=(WeatherObject)wo;
            Weather.dbg("String_Node_Str" + so.ID);
            so.setDead();
          }
        }
      }
 else       if (var2[1].equals("String_Node_Str") || var2[1].equals("String_Node_Str")) {
        if (var2.length > 2 && posVec != Vec3d.ZERO) {
          boolean spawnCloudStorm=true;
          WeatherManagerServer wm=ServerTickHandler.lookupDimToWeatherMan.get(dimension);
          StormObject so=new StormObject(wm);
          so.layer=0;
          so.userSpawnedFor=CoroUtilEntity.getName(player);
          so.naturallySpawned=false;
          so.levelTemperature=0.1F;
          so.pos=new Vec3(posVec.x,StormObject.layers.get(so.layer),posVec.z);
          so.levelWater=so.levelWaterStartRaining * 2;
          so.attrib_precipitation=true;
          if (!var2[2].equals("String_Node_Str")) {
            so.initRealStorm(null,null);
          }
          if (var2[2].equals("String_Node_Str")) {
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str") || var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_THUNDER;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_HIGHWIND;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_HIGHWIND;
            so.attrib_waterSpout=true;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_HAIL;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_STAGE5;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_STAGE4;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_STAGE3;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_STAGE2;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_STAGE1;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_STAGE1;
            so.isFirenado=true;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_FORMING;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.stormType=StormObject.TYPE_WATER;
            so.levelCurIntensityStage=StormObject.STATE_FORMING;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.stormType=StormObject.TYPE_WATER;
            so.levelCurIntensityStage=StormObject.STATE_STAGE1;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.stormType=StormObject.TYPE_WATER;
            so.levelCurIntensityStage=StormObject.STATE_STAGE2;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.stormType=StormObject.TYPE_WATER;
            so.levelCurIntensityStage=StormObject.STATE_STAGE3;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.stormType=StormObject.TYPE_WATER;
            so.levelCurIntensityStage=StormObject.STATE_STAGE4;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str") || var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.stormType=StormObject.TYPE_WATER;
            so.levelCurIntensityStage=StormObject.STATE_STAGE5;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.stormType=StormObject.TYPE_WATER;
            so.levelCurIntensityStage=StormObject.STATE_STAGE5;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_THUNDER;
            so.alwaysProgresses=true;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_THUNDER;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            WeatherObjectSandstorm sandstorm=new WeatherObjectSandstorm(wm);
            Vec3 pos=new Vec3(posVec.x,world.getHeight(new BlockPos(posVec.x,0,posVec.z)).getY() + 1,posVec.z);
            float angle=wm.getWindManager().getWindAngleForClouds();
            double vecX=-Math.sin(Math.toRadians(angle));
            double vecZ=Math.cos(Math.toRadians(angle));
            double speed=150D;
            pos.xCoord-=vecX * speed;
            pos.zCoord-=vecZ * speed;
            sandstorm.initFirstTime();
            sandstorm.initSandstormSpawn(pos);
            wm.addStormObject(sandstorm);
            wm.syncStormNew(sandstorm);
            spawnCloudStorm=false;
            wm.windMan.startHighWindEvent();
            wm.windMan.lowWindTimer=0;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            boolean spawned=wm.trySpawnSandstormNearPos(world,new Vec3(posVec));
            spawnCloudStorm=false;
            if (!spawned) {
              sendCommandSenderMsg(var1,"String_Node_Str");
              return;
            }
 else {
              wm.windMan.startHighWindEvent();
              wm.windMan.lowWindTimer=0;
            }
          }
          if (var2.length > 3) {
            if (var2[3].contains("String_Node_Str") || var2[3].contains("String_Node_Str")) {
              so.alwaysProgresses=true;
            }
          }
          if (spawnCloudStorm) {
            so.initFirstTime();
            wm.addStormObject(so);
            wm.syncStormNew(so);
          }
          sendCommandSenderMsg(var1,"String_Node_Str" + var2[2] + "String_Node_Str"+ (so.alwaysProgresses ? "String_Node_Str" : "String_Node_Str"));
        }
 else {
          sendCommandSenderMsg(var1,helpMsgStorm);
        }
      }
 else       if (var2[1].equals("String_Node_Str")) {
        sendCommandSenderMsg(var1,helpMsgStorm);
      }
 else {
        sendCommandSenderMsg(var1,helpMsgStorm);
      }
    }
 else     if (var2[0].equals("String_Node_Str") && player != null) {
      WeatherUtilBlock.floodAreaWithLayerableBlock(player.world,new Vec3(player.posX,player.posY,player.posZ),player.rotationYawHead,1,1,CommonProxy.blockSandLayer,30);
    }
 else     if (var2[0].equals("String_Node_Str")) {
      if (var2[1].equals("String_Node_Str")) {
        boolean doHighOn=false;
        boolean doHighOff=false;
        if (var2.length > 2) {
          if (var2[2].equals("String_Node_Str")) {
            doHighOn=true;
          }
 else           if (var2[2].equals("String_Node_Str")) {
            doHighOff=true;
          }
        }
 else {
          doHighOn=true;
        }
        WeatherManagerServer wm=ServerTickHandler.getWeatherSystemForDim(dimension);
        if (doHighOn) {
          wm.windMan.startHighWindEvent();
          wm.windMan.lowWindTimer=0;
          sendCommandSenderMsg(var1,"String_Node_Str");
        }
 else         if (doHighOff) {
          wm.windMan.stopHighWindEvent();
          sendCommandSenderMsg(var1,"String_Node_Str");
        }
      }
 else       if (var2[1].equals("String_Node_Str")) {
        boolean doLowOn=false;
        boolean doLowOff=false;
        if (var2.length > 2) {
          if (var2[2].equals("String_Node_Str")) {
            doLowOn=true;
          }
 else           if (var2[2].equals("String_Node_Str")) {
            doLowOff=true;
          }
        }
 else {
          doLowOn=true;
        }
        WeatherManagerServer wm=ServerTickHandler.getWeatherSystemForDim(dimension);
        if (doLowOn) {
          wm.windMan.startLowWindEvent();
          wm.windMan.lowWindTimer=0;
          sendCommandSenderMsg(var1,"String_Node_Str");
        }
 else         if (doLowOff) {
          wm.windMan.stopLowWindEvent();
          sendCommandSenderMsg(var1,"String_Node_Str");
        }
      }
    }
 else {
      sendCommandSenderMsg(var1,helpMsgStorm);
    }
  }
 catch (  Exception ex) {
    System.out.println("String_Node_Str");
    sendCommandSenderMsg(var1,helpMsgStorm);
    ex.printStackTrace();
  }
}

Fixed version (ground truth):
@Override public void execute(MinecraftServer server,ICommandSender var1,String[] var2){
  String helpMsgStorm="String_Node_Str";
  EntityPlayer player=null;
  if (var1 instanceof EntityPlayer) {
    player=(EntityPlayer)var1;
  }
  World world=var1.getEntityWorld();
  int dimension=world.provider.getDimension();
  BlockPos posBlock=var1.getPosition();
  Vec3d posVec=var1.getPositionVector();
  try {
    if (var2[0].equals("String_Node_Str")) {
      if (var2[1].equals("String_Node_Str") && posVec != Vec3d.ZERO) {
        if (dimension == 0) {
          WeatherManagerServer wm=ServerTickHandler.lookupDimToWeatherMan.get(0);
          VolcanoObject vo=new VolcanoObject(wm);
          vo.pos=new Vec3(posVec);
          vo.initFirstTime();
          wm.addVolcanoObject(vo);
          vo.initPost();
          wm.syncVolcanoNew(vo);
          sendCommandSenderMsg(var1,"String_Node_Str");
        }
 else {
          sendCommandSenderMsg(var1,"String_Node_Str");
        }
      }
    }
 else     if (var2[0].equals("String_Node_Str")) {
      if (var2[1].equalsIgnoreCase("String_Node_Str")) {
        WeatherManagerServer wm=ServerTickHandler.lookupDimToWeatherMan.get(dimension);
        sendCommandSenderMsg(var1,"String_Node_Str");
        List<WeatherObject> listStorms=wm.getStormObjects();
        for (int i=0; i < listStorms.size(); i++) {
          WeatherObject wo=listStorms.get(i);
          if (wo instanceof WeatherObject) {
            WeatherObject so=(WeatherObject)wo;
            Weather.dbg("String_Node_Str" + so.ID);
            so.setDead();
          }
        }
      }
 else       if (var2[1].equals("String_Node_Str") || var2[1].equals("String_Node_Str")) {
        if (var2.length > 2 && posVec != Vec3d.ZERO) {
          boolean spawnCloudStorm=true;
          WeatherManagerServer wm=ServerTickHandler.lookupDimToWeatherMan.get(dimension);
          StormObject so=new StormObject(wm);
          so.layer=0;
          so.userSpawnedFor=CoroUtilEntity.getName(player);
          so.naturallySpawned=false;
          so.levelTemperature=0.1F;
          so.pos=new Vec3(posVec.x,StormObject.layers.get(so.layer),posVec.z);
          so.levelWater=so.levelWaterStartRaining * 2;
          so.attrib_precipitation=true;
          if (!var2[2].equals("String_Node_Str")) {
            so.initRealStorm(null,null);
          }
          if (var2[2].equals("String_Node_Str")) {
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str") || var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_THUNDER;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_HIGHWIND;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_HIGHWIND;
            so.attrib_waterSpout=true;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_HAIL;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_STAGE5;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_STAGE4;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_STAGE3;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_STAGE2;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_STAGE1;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_STAGE1;
            so.isFirenado=true;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_FORMING;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.stormType=StormObject.TYPE_WATER;
            so.levelCurIntensityStage=StormObject.STATE_FORMING;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.stormType=StormObject.TYPE_WATER;
            so.levelCurIntensityStage=StormObject.STATE_STAGE1;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.stormType=StormObject.TYPE_WATER;
            so.levelCurIntensityStage=StormObject.STATE_STAGE2;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.stormType=StormObject.TYPE_WATER;
            so.levelCurIntensityStage=StormObject.STATE_STAGE3;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.stormType=StormObject.TYPE_WATER;
            so.levelCurIntensityStage=StormObject.STATE_STAGE4;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str") || var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.stormType=StormObject.TYPE_WATER;
            so.levelCurIntensityStage=StormObject.STATE_STAGE5;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.stormType=StormObject.TYPE_WATER;
            so.levelCurIntensityStage=StormObject.STATE_STAGE5;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_THUNDER;
            so.alwaysProgresses=true;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            so.levelCurIntensityStage=StormObject.STATE_THUNDER;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            WeatherObjectSandstorm sandstorm=new WeatherObjectSandstorm(wm);
            Vec3 pos=new Vec3(posVec.x,world.getHeight(new BlockPos(posVec.x,0,posVec.z)).getY() + 1,posVec.z);
            float angle=wm.getWindManager().getWindAngleForClouds();
            double vecX=-Math.sin(Math.toRadians(angle));
            double vecZ=Math.cos(Math.toRadians(angle));
            double speed=150D;
            pos.xCoord-=vecX * speed;
            pos.zCoord-=vecZ * speed;
            sandstorm.initFirstTime();
            sandstorm.initSandstormSpawn(pos);
            wm.addStormObject(sandstorm);
            wm.syncStormNew(sandstorm);
            spawnCloudStorm=false;
            wm.windMan.startHighWindEvent();
            wm.windMan.lowWindTimer=0;
          }
 else           if (var2[2].equalsIgnoreCase("String_Node_Str")) {
            boolean spawned=wm.trySpawnSandstormNearPos(world,new Vec3(posVec));
            spawnCloudStorm=false;
            if (!spawned) {
              sendCommandSenderMsg(var1,"String_Node_Str");
              return;
            }
 else {
              wm.windMan.startHighWindEvent();
              wm.windMan.lowWindTimer=0;
            }
          }
          if (var2.length > 3) {
            if (var2[3].contains("String_Node_Str") || var2[3].contains("String_Node_Str")) {
              so.alwaysProgresses=true;
            }
          }
          if (spawnCloudStorm) {
            so.initFirstTime();
            wm.addStormObject(so);
            wm.syncStormNew(so);
          }
          sendCommandSenderMsg(var1,"String_Node_Str" + var2[2] + "String_Node_Str"+ (so.alwaysProgresses ? "String_Node_Str" : "String_Node_Str"));
        }
 else {
          sendCommandSenderMsg(var1,helpMsgStorm);
        }
      }
 else       if (var2[1].equals("String_Node_Str")) {
        sendCommandSenderMsg(var1,helpMsgStorm);
      }
 else {
        sendCommandSenderMsg(var1,helpMsgStorm);
      }
    }
 else     if (var2[0].equals("String_Node_Str") && player != null) {
      WeatherUtilBlock.floodAreaWithLayerableBlock(player.world,new Vec3(player.posX,player.posY,player.posZ),player.rotationYawHead,1,1,CommonProxy.blockSandLayer,30);
    }
 else     if (var2[0].equals("String_Node_Str")) {
      if (var2[1].equals("String_Node_Str")) {
        boolean doHighOn=false;
        boolean doHighOff=false;
        if (var2.length > 2) {
          if (var2[2].equals("String_Node_Str")) {
            doHighOn=true;
          }
 else           if (var2[2].equals("String_Node_Str")) {
            doHighOff=true;
          }
        }
 else {
          doHighOn=true;
        }
        WeatherManagerServer wm=ServerTickHandler.getWeatherSystemForDim(dimension);
        if (doHighOn) {
          wm.windMan.startHighWindEvent();
          wm.windMan.lowWindTimer=0;
          sendCommandSenderMsg(var1,"String_Node_Str");
        }
 else         if (doHighOff) {
          wm.windMan.stopHighWindEvent();
          sendCommandSenderMsg(var1,"String_Node_Str");
        }
      }
 else       if (var2[1].equals("String_Node_Str")) {
        boolean doLowOn=false;
        boolean doLowOff=false;
        if (var2.length > 2) {
          if (var2[2].equals("String_Node_Str")) {
            doLowOn=true;
          }
 else           if (var2[2].equals("String_Node_Str")) {
            doLowOff=true;
          }
        }
 else {
          doLowOn=true;
        }
        WeatherManagerServer wm=ServerTickHandler.getWeatherSystemForDim(dimension);
        if (doLowOn) {
          wm.windMan.startLowWindEvent();
          wm.windMan.highWindTimer=0;
          sendCommandSenderMsg(var1,"String_Node_Str");
        }
 else         if (doLowOff) {
          wm.windMan.stopLowWindEvent();
          sendCommandSenderMsg(var1,"String_Node_Str");
        }
      }
    }
 else {
      sendCommandSenderMsg(var1,helpMsgStorm);
    }
  }
 catch (  Exception ex) {
    System.out.println("String_Node_Str");
    sendCommandSenderMsg(var1,helpMsgStorm);
    ex.printStackTrace();
  }
}