Program: 133990
Project: 133990
Buggy source:
@SuppressWarnings("String_Node_Str") public void animateLift(){
  if (animCounter < 4) {
    revert();
    loc.add(0,1,0);
    if (animCounter == 0) {
      int totalBendableBlocks=0;
      for (int x=-1; x <= 1; x++)       for (int y=-2; y <= -1; y++)       for (int z=-1; z <= 1; z++) {
        Block block=loc.clone().add(x,y,z).getBlock();
        if (GeneralMethods.isRegionProtectedFromBuild(player,"String_Node_Str",block.getLocation())) {
          remove();
          return;
        }
        if (isEarthbendableMaterial(block.getType()))         totalBendableBlocks++;
      }
      if (totalBendableBlocks < REQUIRED_BENDABLE_BLOCKS) {
        remove();
        return;
      }
      for (int y=0; y <= 3; y++) {
        Block tempBlock=loc.clone().add(0,y,0).getBlock();
        if (!EarthMethods.isTransparentToEarthbending(player,tempBlock) && tempBlock.getType() != Material.AIR) {
          remove();
          return;
        }
      }
      Location tempLoc=loc.clone().add(0,-2,0);
      for (int x=-1; x <= 1; x++)       for (int y=-1; y <= 1; y++)       for (int z=-1; z <= 1; z++)       if ((Math.abs(x) + Math.abs(y) + Math.abs(z)) % 2 == 0) {
        Block block=tempLoc.clone().add(x,y,z).getBlock();
        currentBlocks.add(new BlockRepresenter(x,y,z,selectMaterialForRepresenter(block.getType()),block.getData()));
      }
      for (int x=-1; x <= 1; x++)       for (int z=-1; z <= 1; z++) {
        if ((Math.abs(x) + Math.abs(z)) % 2 == 1) {
          Block block=loc.clone().add(x,-2,z).getBlock();
          if (isEarthbendableMaterial(block.getType()))           EarthMethods.addTempAirBlock(block);
        }
        Block block=loc.clone().add(x,-1,z).getBlock();
        if (isEarthbendableMaterial(block.getType()))         EarthMethods.addTempAirBlock(block);
      }
      loc.add(0,-1,0);
    }
    List<Entity> entities=GeneralMethods.getEntitiesAroundPoint(loc,2.5);
    for (    Entity entity : entities) {
      org.bukkit.util.Vector velocity=entity.getVelocity();
      entity.setVelocity(velocity.add(new Vector(0,0.36,0)));
    }
    loc.getWorld().playEffect(loc,Effect.GHAST_SHOOT,0,7);
    draw();
  }
 else {
    state=State.LIFTED;
  }
  animCounter++;
}

Fixed version (ground truth):
@SuppressWarnings("String_Node_Str") public void animateLift(){
  if (animCounter < 4) {
    revert();
    loc.add(0,1,0);
    if (animCounter == 0) {
      int totalBendableBlocks=0;
      for (int x=-1; x <= 1; x++)       for (int y=-2; y <= -1; y++)       for (int z=-1; z <= 1; z++) {
        Block block=loc.clone().add(x,y,z).getBlock();
        if (GeneralMethods.isRegionProtectedFromBuild(player,"String_Node_Str",block.getLocation())) {
          remove();
          return;
        }
        if (EarthMethods.isEarthbendable(player,block))         totalBendableBlocks++;
      }
      if (totalBendableBlocks < REQUIRED_BENDABLE_BLOCKS) {
        remove();
        return;
      }
      for (int y=0; y <= 3; y++) {
        Block tempBlock=loc.clone().add(0,y,0).getBlock();
        if (!EarthMethods.isTransparentToEarthbending(player,tempBlock) && tempBlock.getType() != Material.AIR) {
          remove();
          return;
        }
      }
      Location tempLoc=loc.clone().add(0,-2,0);
      for (int x=-1; x <= 1; x++)       for (int y=-1; y <= 1; y++)       for (int z=-1; z <= 1; z++)       if ((Math.abs(x) + Math.abs(y) + Math.abs(z)) % 2 == 0) {
        Block block=tempLoc.clone().add(x,y,z).getBlock();
        currentBlocks.add(new BlockRepresenter(x,y,z,selectMaterialForRepresenter(block.getType()),block.getData()));
      }
      for (int x=-1; x <= 1; x++)       for (int z=-1; z <= 1; z++) {
        if ((Math.abs(x) + Math.abs(z)) % 2 == 1) {
          Block block=loc.clone().add(x,-2,z).getBlock();
          if (EarthMethods.isEarthbendable(player,block))           EarthMethods.addTempAirBlock(block);
        }
        Block block=loc.clone().add(x,-1,z).getBlock();
        if (EarthMethods.isEarthbendable(player,block))         EarthMethods.addTempAirBlock(block);
      }
      loc.add(0,-1,0);
    }
    List<Entity> entities=GeneralMethods.getEntitiesAroundPoint(loc,2.5);
    for (    Entity entity : entities) {
      org.bukkit.util.Vector velocity=entity.getVelocity();
      entity.setVelocity(velocity.add(new Vector(0,0.36,0)));
    }
    loc.getWorld().playEffect(loc,Effect.GHAST_SHOOT,0,7);
    draw();
  }
 else {
    state=State.LIFTED;
  }
  animCounter++;
}