Program: 134119
Project: 134119
Buggy source:
private boolean progress(){
  if (player.isDead() || !player.isOnline() || !GeneralMethods.canBend(player.getName(),"String_Node_Str")) {
    breakBlock();
    return false;
  }
  if (System.currentTimeMillis() - time >= interval) {
    time=System.currentTimeMillis();
    if (falling) {
      breakBlock();
      return false;
    }
    if (!EarthMethods.isEarthbendable(player,sourceblock) && sourceblock.getType() != Material.COBBLESTONE) {
      instances.remove(id);
      return false;
    }
    if (!progressing && !falling) {
      if (GeneralMethods.getBoundAbility(player) == null) {
        unfocusBlock();
        return false;
      }
      if (!GeneralMethods.getBoundAbility(player).equalsIgnoreCase("String_Node_Str")) {
        unfocusBlock();
        return false;
      }
      if (sourceblock == null) {
        instances.remove(id);
        return false;
      }
      if (player.getWorld() != sourceblock.getWorld()) {
        unfocusBlock();
        return false;
      }
      if (sourceblock.getLocation().distance(player.getLocation()) > preparerange) {
        unfocusBlock();
        return false;
      }
    }
    if (falling) {
      breakBlock();
    }
 else {
      if (!progressing) {
        return false;
      }
      if (sourceblock.getY() == firstdestination.getBlockY())       settingup=false;
      Vector direction;
      if (settingup) {
        direction=GeneralMethods.getDirection(location,firstdestination).normalize();
      }
 else {
        direction=GeneralMethods.getDirection(location,destination).normalize();
      }
      location=location.clone().add(direction);
      WaterMethods.removeWaterSpouts(location,player);
      AirMethods.removeAirSpouts(location,player);
      Block block=location.getBlock();
      if (block.getLocation().equals(sourceblock.getLocation())) {
        location=location.clone().add(direction);
        block=location.getBlock();
      }
      if (EarthMethods.isTransparentToEarthbending(player,block) && !block.isLiquid()) {
        GeneralMethods.breakBlock(block);
      }
 else       if (!settingup) {
        breakBlock();
        return false;
      }
 else {
        location=location.clone().subtract(direction);
        direction=GeneralMethods.getDirection(location,destination).normalize();
        location=location.clone().add(direction);
        WaterMethods.removeWaterSpouts(location,player);
        AirMethods.removeAirSpouts(location,player);
        double radius=FireBlast.AFFECTING_RADIUS;
        Player source=player;
        if (EarthBlast.annihilateBlasts(location,radius,source) || WaterManipulation.annihilateBlasts(location,radius,source) || FireBlast.annihilateBlasts(location,radius,source)) {
          breakBlock();
          return false;
        }
        Combustion.removeAroundPoint(location,radius);
        Block block2=location.getBlock();
        if (block2.getLocation().equals(sourceblock.getLocation())) {
          location=location.clone().add(direction);
          block2=location.getBlock();
        }
        if (EarthMethods.isTransparentToEarthbending(player,block) && !block.isLiquid()) {
          GeneralMethods.breakBlock(block);
        }
 else {
          breakBlock();
          return false;
        }
      }
      for (      Entity entity : GeneralMethods.getEntitiesAroundPoint(location,FireBlast.AFFECTING_RADIUS)) {
        if (GeneralMethods.isRegionProtectedFromBuild(player,"String_Node_Str",entity.getLocation()))         continue;
        if (entity instanceof LivingEntity && (entity.getEntityId() != player.getEntityId() || hitself)) {
          AirMethods.breakBreathbendingHold(entity);
          Location location=player.getEyeLocation();
          Vector vector=location.getDirection();
          entity.setVelocity(vector.normalize().multiply(pushfactor));
          double damage=this.damage;
          if (EarthMethods.isMetal(sourceblock) && EarthMethods.canMetalbend(player)) {
            damage=EarthMethods.getMetalAugment(this.damage);
          }
          GeneralMethods.damageEntity(player,entity,damage);
          progressing=false;
        }
      }
      if (!progressing) {
        breakBlock();
        return false;
      }
      if (revert) {
        sourceblock.setType(sourcetype);
        EarthMethods.moveEarthBlock(sourceblock,block);
        if (block.getType() == Material.SAND)         block.setType(Material.SANDSTONE);
        if (block.getType() == Material.GRAVEL)         block.setType(Material.STONE);
      }
 else {
        block.setType(sourceblock.getType());
        sourceblock.setType(Material.AIR);
      }
      sourceblock=block;
      if (location.distance(destination) < 1) {
        if (sourcetype == Material.SAND || sourcetype == Material.GRAVEL) {
          progressing=false;
          sourceblock.setType(sourcetype);
        }
        falling=true;
        progressing=false;
      }
      return true;
    }
  }
  return false;
}

Fixed version (ground truth):
private boolean progress(){
  if (player.isDead() || !player.isOnline() || !GeneralMethods.canBend(player.getName(),"String_Node_Str")) {
    breakBlock();
    return false;
  }
  if (System.currentTimeMillis() - time >= interval) {
    time=System.currentTimeMillis();
    if (falling) {
      breakBlock();
      return false;
    }
    if (!EarthMethods.isEarthbendable(player,sourceblock) && sourceblock.getType() != Material.COBBLESTONE) {
      instances.remove(id);
      return false;
    }
    if (!progressing && !falling) {
      if (GeneralMethods.getBoundAbility(player) == null) {
        unfocusBlock();
        return false;
      }
      if (!GeneralMethods.getBoundAbility(player).equalsIgnoreCase("String_Node_Str")) {
        unfocusBlock();
        return false;
      }
      if (sourceblock == null) {
        instances.remove(id);
        return false;
      }
      if (!player.getWorld().equals(sourceblock.getWorld())) {
        unfocusBlock();
        return false;
      }
      if (sourceblock.getLocation().distance(player.getLocation()) > preparerange) {
        unfocusBlock();
        return false;
      }
    }
    if (falling) {
      breakBlock();
    }
 else {
      if (!progressing) {
        return false;
      }
      if (sourceblock.getY() == firstdestination.getBlockY())       settingup=false;
      Vector direction;
      if (settingup) {
        direction=GeneralMethods.getDirection(location,firstdestination).normalize();
      }
 else {
        direction=GeneralMethods.getDirection(location,destination).normalize();
      }
      location=location.clone().add(direction);
      WaterMethods.removeWaterSpouts(location,player);
      AirMethods.removeAirSpouts(location,player);
      Block block=location.getBlock();
      if (block.getLocation().equals(sourceblock.getLocation())) {
        location=location.clone().add(direction);
        block=location.getBlock();
      }
      if (EarthMethods.isTransparentToEarthbending(player,block) && !block.isLiquid()) {
        GeneralMethods.breakBlock(block);
      }
 else       if (!settingup) {
        breakBlock();
        return false;
      }
 else {
        location=location.clone().subtract(direction);
        direction=GeneralMethods.getDirection(location,destination).normalize();
        location=location.clone().add(direction);
        WaterMethods.removeWaterSpouts(location,player);
        AirMethods.removeAirSpouts(location,player);
        double radius=FireBlast.AFFECTING_RADIUS;
        Player source=player;
        if (EarthBlast.annihilateBlasts(location,radius,source) || WaterManipulation.annihilateBlasts(location,radius,source) || FireBlast.annihilateBlasts(location,radius,source)) {
          breakBlock();
          return false;
        }
        Combustion.removeAroundPoint(location,radius);
        Block block2=location.getBlock();
        if (block2.getLocation().equals(sourceblock.getLocation())) {
          location=location.clone().add(direction);
          block2=location.getBlock();
        }
        if (EarthMethods.isTransparentToEarthbending(player,block) && !block.isLiquid()) {
          GeneralMethods.breakBlock(block);
        }
 else {
          breakBlock();
          return false;
        }
      }
      for (      Entity entity : GeneralMethods.getEntitiesAroundPoint(location,FireBlast.AFFECTING_RADIUS)) {
        if (GeneralMethods.isRegionProtectedFromBuild(player,"String_Node_Str",entity.getLocation()))         continue;
        if (entity instanceof LivingEntity && (entity.getEntityId() != player.getEntityId() || hitself)) {
          AirMethods.breakBreathbendingHold(entity);
          Location location=player.getEyeLocation();
          Vector vector=location.getDirection();
          entity.setVelocity(vector.normalize().multiply(pushfactor));
          double damage=this.damage;
          if (EarthMethods.isMetal(sourceblock) && EarthMethods.canMetalbend(player)) {
            damage=EarthMethods.getMetalAugment(this.damage);
          }
          GeneralMethods.damageEntity(player,entity,damage);
          progressing=false;
        }
      }
      if (!progressing) {
        breakBlock();
        return false;
      }
      if (revert) {
        sourceblock.setType(sourcetype);
        EarthMethods.moveEarthBlock(sourceblock,block);
        if (block.getType() == Material.SAND)         block.setType(Material.SANDSTONE);
        if (block.getType() == Material.GRAVEL)         block.setType(Material.STONE);
      }
 else {
        block.setType(sourceblock.getType());
        sourceblock.setType(Material.AIR);
      }
      sourceblock=block;
      if (location.distance(destination) < 1) {
        if (sourcetype == Material.SAND || sourcetype == Material.GRAVEL) {
          progressing=false;
          sourceblock.setType(sourcetype);
        }
        falling=true;
        progressing=false;
      }
      return true;
    }
  }
  return false;
}