Program: 133878
Project: 133878
Buggy source:
@Override public void progress(){
  if (!bPlayer.canBendIgnoreBindsCooldowns(this)) {
    remove();
    return;
  }
  if (System.currentTimeMillis() - time >= interval) {
    if (!progressing && !falling && !bPlayer.getBoundAbilityName().equalsIgnoreCase(getName())) {
      remove();
      return;
    }
    if (falling) {
      remove();
      new WaterReturn(player,sourceBlock);
      return;
    }
 else {
      if (!progressing) {
        if (!(isWater(sourceBlock.getType()) || (isIce(sourceBlock) && bPlayer.canIcebend()) || (isSnow(sourceBlock) && bPlayer.canIcebend())|| (isPlant(sourceBlock) && bPlayer.canPlantbend()))) {
          remove();
          return;
        }
        sourceBlock.getWorld().playEffect(location,Effect.SMOKE,4,(int)selectRange);
        return;
      }
      if (sourceBlock.getLocation().distanceSquared(firstDestination) < 0.5 * 0.5) {
        settingUp=false;
      }
      Vector direction;
      if (settingUp) {
        direction=firstDirection;
      }
 else {
        direction=targetDirection;
      }
      Block block=location.getBlock();
      if (displacing) {
        Block targetBlock=player.getTargetBlock((HashSet<Material>)null,dispelRange);
        direction=GeneralMethods.getDirection(location,targetBlock.getLocation()).normalize();
        if (!location.getBlock().equals(targetBlock.getLocation())) {
          location=location.clone().add(direction);
          block=location.getBlock();
          if (block.getLocation().equals(sourceBlock.getLocation())) {
            location=location.clone().add(direction);
            block=location.getBlock();
          }
        }
      }
 else {
        WaterAbility.removeWaterSpouts(location,player);
        AirAbility.removeAirSpouts(location,player);
        EarthAbility.removeSandSpouts(location,player);
        if ((new Random()).nextInt(4) == 0) {
          playWaterbendingSound(location);
        }
        double radius=collisionRadius;
        Player source=player;
        if (!(location == null)) {
          if (EarthBlast.annihilateBlasts(location,radius,source) || WaterManipulation.annihilateBlasts(location,radius,source) || FireBlast.annihilateBlasts(location,radius,source)) {
            remove();
            new WaterReturn(player,sourceBlock);
            return;
          }
          Combustion.removeAroundPoint(location,radius);
        }
        location=location.clone().add(direction);
        block=location.getBlock();
        if (block.getLocation().equals(sourceBlock.getLocation())) {
          location=location.clone().add(direction);
          block=location.getBlock();
        }
      }
      if (trail2 != null) {
        if (trail2.getBlock().equals(block)) {
          trail2.revertBlock();
          trail2=null;
        }
      }
      if (trail != null) {
        if (trail.getBlock().equals(block)) {
          trail.revertBlock();
          trail=null;
          if (trail2 != null) {
            trail2.revertBlock();
            trail2=null;
          }
        }
      }
      if (isTransparent(player,block) && !block.isLiquid()) {
        GeneralMethods.breakBlock(block);
      }
 else       if (block.getType() != Material.AIR && !isWater(block)) {
        remove();
        new WaterReturn(player,sourceBlock);
        return;
      }
      if (!displacing) {
        for (        Entity entity : GeneralMethods.getEntitiesAroundPoint(location,collisionRadius)) {
          if (entity instanceof LivingEntity && entity.getEntityId() != player.getEntityId()) {
            Location location=player.getEyeLocation();
            Vector vector=location.getDirection();
            entity.setVelocity(vector.normalize().multiply(pushFactor));
            if (bPlayer.isAvatarState()) {
              damage=AvatarState.getValue(damage);
            }
            damage=getNightFactor(damage);
            DamageHandler.damageEntity(entity,damage,this);
            AirAbility.breakBreathbendingHold(entity);
            progressing=false;
          }
        }
      }
      if (!progressing) {
        remove();
        new WaterReturn(player,sourceBlock);
        return;
      }
      addWater(block);
      reduceWater(sourceBlock);
      if (trail2 != null) {
        trail2.revertBlock();
        trail2=null;
      }
      if (trail != null) {
        trail2=trail;
        trail2.setType(Material.STATIONARY_WATER,(byte)2);
      }
      trail=new TempBlock(sourceBlock,Material.STATIONARY_WATER,(byte)1);
      sourceBlock=block;
      if (location.distanceSquared(targetDestination) <= 1 || location.distanceSquared(firstDestination) > range * range) {
        falling=true;
        progressing=false;
      }
    }
  }
}

Fixed version (ground truth):
@Override public void progress(){
  if (!bPlayer.canBendIgnoreBindsCooldowns(this)) {
    remove();
    return;
  }
  if (System.currentTimeMillis() - time >= interval) {
    if (!progressing && !falling && !bPlayer.getBoundAbilityName().equalsIgnoreCase(getName())) {
      remove();
      return;
    }
    if (falling) {
      remove();
      new WaterReturn(player,sourceBlock);
      return;
    }
 else {
      if (!progressing) {
        if (!(isWater(sourceBlock.getType()) || (isIce(sourceBlock) && bPlayer.canIcebend()) || (isSnow(sourceBlock) && bPlayer.canIcebend())|| (isPlant(sourceBlock) && bPlayer.canPlantbend()))) {
          remove();
          return;
        }
        sourceBlock.getWorld().playEffect(location,Effect.SMOKE,4,(int)selectRange);
        return;
      }
      if (sourceBlock.getLocation().distanceSquared(firstDestination) < 0.5 * 0.5) {
        settingUp=false;
      }
      Vector direction;
      if (settingUp) {
        direction=firstDirection;
      }
 else {
        direction=targetDirection;
      }
      Block block=location.getBlock();
      if (displacing) {
        Block targetBlock=player.getTargetBlock((HashSet<Material>)null,dispelRange);
        direction=GeneralMethods.getDirection(location,targetBlock.getLocation()).normalize();
        if (!location.getBlock().equals(targetBlock.getLocation())) {
          location=location.clone().add(direction);
          block=location.getBlock();
          if (block.getLocation().equals(sourceBlock.getLocation())) {
            location=location.clone().add(direction);
            block=location.getBlock();
          }
        }
      }
 else {
        WaterAbility.removeWaterSpouts(location,player);
        AirAbility.removeAirSpouts(location,player);
        EarthAbility.removeSandSpouts(location,player);
        if ((new Random()).nextInt(4) == 0) {
          playWaterbendingSound(location);
        }
        double radius=collisionRadius;
        Player source=player;
        if (!(location == null)) {
          if (EarthBlast.annihilateBlasts(location,radius,source) || WaterManipulation.annihilateBlasts(location,radius,source) || FireBlast.annihilateBlasts(location,radius,source)) {
            remove();
            new WaterReturn(player,sourceBlock);
            return;
          }
          Combustion.removeAroundPoint(location,radius);
        }
        location=location.clone().add(direction);
        block=location.getBlock();
        if (block.getLocation().equals(sourceBlock.getLocation())) {
          location=location.clone().add(direction);
          block=location.getBlock();
        }
      }
      if (trail2 != null) {
        if (!TempBlock.isTempBlock(block) && (trail2.getBlock().equals(block))) {
          trail2.revertBlock();
          trail2=null;
        }
      }
      if (trail != null) {
        if (!TempBlock.isTempBlock(block) && trail.getBlock().equals(block)) {
          trail.revertBlock();
          trail=null;
          if (trail2 != null) {
            trail2.revertBlock();
            trail2=null;
          }
        }
      }
      if (isTransparent(player,block) && !block.isLiquid()) {
        GeneralMethods.breakBlock(block);
      }
 else       if (block.getType() != Material.AIR && !isWater(block)) {
        remove();
        new WaterReturn(player,sourceBlock);
        return;
      }
      if (!displacing) {
        for (        Entity entity : GeneralMethods.getEntitiesAroundPoint(location,collisionRadius)) {
          if (entity instanceof LivingEntity && entity.getEntityId() != player.getEntityId()) {
            Location location=player.getEyeLocation();
            Vector vector=location.getDirection();
            entity.setVelocity(vector.normalize().multiply(pushFactor));
            if (bPlayer.isAvatarState()) {
              damage=AvatarState.getValue(damage);
            }
            damage=getNightFactor(damage);
            DamageHandler.damageEntity(entity,damage,this);
            AirAbility.breakBreathbendingHold(entity);
            progressing=false;
          }
        }
      }
      if (!progressing) {
        remove();
        new WaterReturn(player,sourceBlock);
        return;
      }
      addWater(block);
      reduceWater(sourceBlock);
      if (trail2 != null) {
        trail2.revertBlock();
        trail2=null;
      }
      if (trail != null) {
        trail2=trail;
        trail2.setType(Material.STATIONARY_WATER,(byte)2);
      }
      trail=new TempBlock(sourceBlock,Material.STATIONARY_WATER,(byte)1);
      sourceBlock=block;
      if (location.distanceSquared(targetDestination) <= 1 || location.distanceSquared(firstDestination) > range * range) {
        falling=true;
        progressing=false;
      }
    }
  }
}