Program: 133891
Project: 133891
Buggy source:
@Override public void progress(){
  progressCounter++;
  if (state == State.LIFTED && removeTimer > 0 && System.currentTimeMillis() - startTime > removeTimer) {
    remove();
    return;
  }
  if (state == State.START) {
    if (!bPlayer.canBend(this)) {
      remove();
      return;
    }
  }
 else   if (state == State.START || state == State.FLYING || state == State.GRABBED) {
    if (!bPlayer.canBendIgnoreCooldowns(this)) {
      remove();
      return;
    }
  }
  if (state == State.START && progressCounter > 1) {
    if (!player.isSneaking()) {
      if (System.currentTimeMillis() - startTime >= chargeTime) {
        origin=getEarthSourceBlock(selectRange);
        if (origin == null) {
          remove();
          return;
        }
        bPlayer.addCooldown(this);
        location=origin.getLocation();
        state=State.LIFTING;
      }
 else {
        remove();
        return;
      }
    }
 else     if (System.currentTimeMillis() - startTime > chargeTime) {
      Location tempLoc=player.getEyeLocation().add(player.getEyeLocation().getDirection().normalize().multiply(1.2));
      tempLoc.add(0,0.3,0);
      ParticleEffect.SMOKE.display(tempLoc,0.3F,0.1F,0.3F,0,4);
    }
  }
 else   if (state == State.LIFTING) {
    if (System.currentTimeMillis() - delay >= liftAnimationInterval) {
      delay=System.currentTimeMillis();
      animateLift();
    }
  }
 else   if (state == State.GRABBED) {
    if (player.isSneaking()) {
      revert();
      Location oldLoc=location.clone();
      location=player.getEyeLocation().add(player.getEyeLocation().getDirection().normalize().multiply(grabbedDistance));
      for (      Block block : getBlocks()) {
        if (block.getType() != Material.AIR && !isTransparent(block)) {
          location=oldLoc;
          break;
        }
      }
      WaterAbility.removeWaterSpouts(location,2,player);
      AirAbility.removeAirSpouts(location,2,player);
      draw();
      return;
    }
 else {
      state=State.LIFTED;
      return;
    }
  }
 else   if (state == State.SHOT) {
    if (System.currentTimeMillis() - delay >= shootAnimationInterval) {
      delay=System.currentTimeMillis();
      if (GeneralMethods.isRegionProtectedFromBuild(this,location)) {
        remove();
        return;
      }
      revert();
      location.add(GeneralMethods.getDirection(location,destination).normalize().multiply(1));
      if (location.distanceSquared(destination) < 4) {
        remove();
        return;
      }
      int badBlocksFound=0;
      for (      Block block : getBlocks()) {
        if (block.getType() != Material.AIR && (!isTransparent(block) || block.getType() == Material.WATER || block.getType() == Material.STATIONARY_WATER)) {
          badBlocksFound++;
        }
      }
      if (badBlocksFound > maxBlocksToPassThrough) {
        remove();
        return;
      }
      WaterAbility.removeWaterSpouts(location,2,player);
      AirAbility.removeAirSpouts(location,2,player);
      shootingCollisionDetection();
      draw();
      smashToSmashCollisionDetection();
    }
    return;
  }
 else   if (state == State.FLYING) {
    if (!player.isSneaking()) {
      remove();
      return;
    }
 else     if (System.currentTimeMillis() - delay >= flightAnimationInterval) {
      delay=System.currentTimeMillis();
      if (GeneralMethods.isRegionProtectedFromBuild(this,location)) {
        remove();
        return;
      }
      revert();
      destination=player.getEyeLocation().clone().add(player.getEyeLocation().getDirection().normalize().multiply(shootRange));
      Vector direction=GeneralMethods.getDirection(location,destination).normalize();
      List<Entity> entities=GeneralMethods.getEntitiesAroundPoint(location.clone().add(0,2,0),flightDetectionRadius);
      if (entities.size() == 0) {
        remove();
        return;
      }
      for (      Entity entity : entities) {
        entity.setVelocity(direction.clone().multiply(flightSpeed));
      }
      if (direction.getY() < -0.35) {
        location=player.getLocation().clone().add(0,-3.2,0);
      }
 else       if (direction.getY() > 0.35) {
        location=player.getLocation().clone().add(0,-1.7,0);
      }
 else {
        location=player.getLocation().clone().add(0,-2.2,0);
      }
      draw();
    }
    if (System.currentTimeMillis() - flightStartTime > flightRemoveTimer) {
      remove();
      return;
    }
  }
}

Fixed version (ground truth):
@Override public void progress(){
  progressCounter++;
  if (state == State.LIFTED && removeTimer > 0 && System.currentTimeMillis() - startTime > removeTimer) {
    remove();
    return;
  }
  if (state == State.START) {
    if (!bPlayer.canBend(this)) {
      remove();
      return;
    }
  }
 else   if (state == State.START || state == State.FLYING || state == State.GRABBED) {
    if (!bPlayer.canBendIgnoreCooldowns(this)) {
      remove();
      return;
    }
  }
  if (state == State.START && progressCounter > 1) {
    if (!player.isSneaking()) {
      if (System.currentTimeMillis() - startTime >= chargeTime) {
        origin=getEarthSourceBlock(selectRange);
        if (origin == null) {
          remove();
          return;
        }
        bPlayer.addCooldown(this);
        location=origin.getLocation();
        state=State.LIFTING;
      }
 else {
        remove();
        return;
      }
    }
 else     if (System.currentTimeMillis() - startTime > chargeTime) {
      Location tempLoc=player.getEyeLocation().add(player.getEyeLocation().getDirection().normalize().multiply(1.2));
      tempLoc.add(0,0.3,0);
      ParticleEffect.SMOKE.display(tempLoc,0.3F,0.1F,0.3F,0,4);
    }
  }
 else   if (state == State.LIFTING) {
    if (System.currentTimeMillis() - delay >= liftAnimationInterval) {
      delay=System.currentTimeMillis();
      animateLift();
    }
  }
 else   if (state == State.GRABBED) {
    if (player.isSneaking()) {
      revert();
      Location oldLoc=location.clone();
      location=player.getEyeLocation().add(player.getEyeLocation().getDirection().normalize().multiply(grabbedDistance));
      for (      Block block : getBlocks()) {
        if (block.getType() != Material.AIR && !isTransparent(block)) {
          location=oldLoc;
          break;
        }
      }
      WaterAbility.removeWaterSpouts(location,2,player);
      AirAbility.removeAirSpouts(location,2,player);
      EarthAbility.removeSandSpouts(location,player);
      draw();
      return;
    }
 else {
      state=State.LIFTED;
      return;
    }
  }
 else   if (state == State.SHOT) {
    if (System.currentTimeMillis() - delay >= shootAnimationInterval) {
      delay=System.currentTimeMillis();
      if (GeneralMethods.isRegionProtectedFromBuild(this,location)) {
        remove();
        return;
      }
      revert();
      location.add(GeneralMethods.getDirection(location,destination).normalize().multiply(1));
      if (location.distanceSquared(destination) < 4) {
        remove();
        return;
      }
      int badBlocksFound=0;
      for (      Block block : getBlocks()) {
        if (block.getType() != Material.AIR && (!isTransparent(block) || block.getType() == Material.WATER || block.getType() == Material.STATIONARY_WATER)) {
          badBlocksFound++;
        }
      }
      if (badBlocksFound > maxBlocksToPassThrough) {
        remove();
        return;
      }
      WaterAbility.removeWaterSpouts(location,2,player);
      AirAbility.removeAirSpouts(location,2,player);
      shootingCollisionDetection();
      draw();
      smashToSmashCollisionDetection();
    }
    return;
  }
 else   if (state == State.FLYING) {
    if (!player.isSneaking()) {
      remove();
      return;
    }
 else     if (System.currentTimeMillis() - delay >= flightAnimationInterval) {
      delay=System.currentTimeMillis();
      if (GeneralMethods.isRegionProtectedFromBuild(this,location)) {
        remove();
        return;
      }
      revert();
      destination=player.getEyeLocation().clone().add(player.getEyeLocation().getDirection().normalize().multiply(shootRange));
      Vector direction=GeneralMethods.getDirection(location,destination).normalize();
      List<Entity> entities=GeneralMethods.getEntitiesAroundPoint(location.clone().add(0,2,0),flightDetectionRadius);
      if (entities.size() == 0) {
        remove();
        return;
      }
      for (      Entity entity : entities) {
        entity.setVelocity(direction.clone().multiply(flightSpeed));
      }
      if (direction.getY() < -0.35) {
        location=player.getLocation().clone().add(0,-3.2,0);
      }
 else       if (direction.getY() > 0.35) {
        location=player.getLocation().clone().add(0,-1.7,0);
      }
 else {
        location=player.getLocation().clone().add(0,-2.2,0);
      }
      draw();
    }
    if (System.currentTimeMillis() - flightStartTime > flightRemoveTimer) {
      remove();
      return;
    }
  }
}