Program: 134143
Project: 134143
Buggy source:
private void progress(){
  if (!Methods.canBend(player.getName(),"String_Node_Str")) {
    remove();
    returnWater();
    return;
  }
  if (Methods.getBoundAbility(player) == null) {
    remove();
    returnWater();
    return;
  }
  if ((!player.isSneaking() && !sourceselected) || !Methods.getBoundAbility(player).equalsIgnoreCase("String_Node_Str")) {
    remove();
    returnWater();
    return;
  }
  if (!sourceblock.getWorld().equals(player.getWorld())) {
    remove();
    return;
  }
  if (sourceblock.getLocation().distance(player.getLocation()) > range && sourceselected) {
    remove();
    return;
  }
  if (System.currentTimeMillis() > time + interval) {
    time=System.currentTimeMillis();
    Location location=player.getLocation();
    if (sourceselected) {
      Methods.playFocusWaterEffect(sourceblock);
    }
 else     if (settingup) {
      if (sourceblock.getY() < location.getBlockY()) {
        source.revertBlock();
        source=null;
        Block newblock=sourceblock.getRelative(BlockFace.UP);
        sourcelocation=newblock.getLocation();
        if (!Methods.isSolid(newblock)) {
          source=new TempBlock(newblock,Material.STATIONARY_WATER,(byte)8);
          sourceblock=newblock;
        }
 else {
          remove();
          returnWater();
        }
      }
 else       if (sourceblock.getY() > location.getBlockY()) {
        source.revertBlock();
        source=null;
        Block newblock=sourceblock.getRelative(BlockFace.DOWN);
        sourcelocation=newblock.getLocation();
        if (!Methods.isSolid(newblock)) {
          source=new TempBlock(newblock,Material.STATIONARY_WATER,(byte)8);
          sourceblock=newblock;
        }
 else {
          remove();
          returnWater();
        }
      }
 else       if (sourcelocation.distance(location) > radius) {
        Vector vector=Methods.getDirection(sourcelocation,location.getBlock().getLocation()).normalize();
        sourcelocation.add(vector);
        Block newblock=sourcelocation.getBlock();
        if (!newblock.equals(sourceblock)) {
          source.revertBlock();
          source=null;
          if (!Methods.isSolid(newblock)) {
            source=new TempBlock(newblock,Material.STATIONARY_WATER,(byte)8);
            sourceblock=newblock;
          }
        }
      }
 else {
        incrementStep();
        source.revertBlock();
        source=null;
        Vector vector=new Vector(1,0,0);
        startangle=vector.angle(Methods.getDirection(sourceblock.getLocation(),location));
        angle=startangle;
      }
    }
 else     if (forming) {
      if (angle - startangle >= 360) {
        y+=1;
      }
 else {
        angle+=20;
      }
      if (Methods.rand.nextInt(4) == 0) {
        Methods.playWaterbendingSound(player.getLocation());
      }
      formOctopus();
      if (y == 2) {
        incrementStep();
      }
    }
 else     if (formed) {
      if (Methods.rand.nextInt(7) == 0) {
        Methods.playWaterbendingSound(player.getLocation());
      }
      step+=1;
      if (step % inc == 0)       animstep+=1;
      if (animstep > 8)       animstep=1;
      formOctopus();
    }
 else {
      remove();
    }
  }
}

Fixed version (ground truth):
private void progress(){
  if (!Methods.canBend(player.getName(),"String_Node_Str")) {
    remove();
    returnWater();
    return;
  }
  if (Methods.getBoundAbility(player) == null) {
    remove();
    returnWater();
    return;
  }
  if ((!player.isSneaking() && !sourceselected) || !Methods.getBoundAbility(player).equalsIgnoreCase("String_Node_Str")) {
    remove();
    returnWater();
    return;
  }
  if (!sourceblock.getWorld().equals(player.getWorld())) {
    remove();
    return;
  }
  if (sourceblock.getLocation().distance(player.getLocation()) > range && sourceselected) {
    remove();
    return;
  }
  if (System.currentTimeMillis() > time + interval) {
    time=System.currentTimeMillis();
    Location location=player.getLocation();
    if (sourceselected) {
      Methods.playFocusWaterEffect(sourceblock);
    }
 else     if (settingup) {
      if (sourceblock.getY() < location.getBlockY()) {
        source.revertBlock();
        source=null;
        Block newblock=sourceblock.getRelative(BlockFace.UP);
        sourcelocation=newblock.getLocation();
        if (!Methods.isSolid(newblock)) {
          source=new TempBlock(newblock,Material.STATIONARY_WATER,(byte)8);
          sourceblock=newblock;
        }
 else {
          remove();
          returnWater();
        }
      }
 else       if (sourceblock.getY() > location.getBlockY()) {
        source.revertBlock();
        source=null;
        Block newblock=sourceblock.getRelative(BlockFace.DOWN);
        sourcelocation=newblock.getLocation();
        if (!Methods.isSolid(newblock)) {
          source=new TempBlock(newblock,Material.STATIONARY_WATER,(byte)8);
          sourceblock=newblock;
        }
 else {
          remove();
          returnWater();
        }
      }
 else       if (sourcelocation.distance(location) > radius) {
        Vector vector=Methods.getDirection(sourcelocation,location.getBlock().getLocation()).normalize();
        sourcelocation.add(vector);
        Block newblock=sourcelocation.getBlock();
        if (!newblock.equals(sourceblock)) {
          source.revertBlock();
          source=null;
          if (!Methods.isSolid(newblock)) {
            source=new TempBlock(newblock,Material.STATIONARY_WATER,(byte)8);
            sourceblock=newblock;
          }
        }
      }
 else {
        incrementStep();
        if (source != null)         source.revertBlock();
        source=null;
        Vector vector=new Vector(1,0,0);
        startangle=vector.angle(Methods.getDirection(sourceblock.getLocation(),location));
        angle=startangle;
      }
    }
 else     if (forming) {
      if (angle - startangle >= 360) {
        y+=1;
      }
 else {
        angle+=20;
      }
      if (Methods.rand.nextInt(4) == 0) {
        Methods.playWaterbendingSound(player.getLocation());
      }
      formOctopus();
      if (y == 2) {
        incrementStep();
      }
    }
 else     if (formed) {
      if (Methods.rand.nextInt(7) == 0) {
        Methods.playWaterbendingSound(player.getLocation());
      }
      step+=1;
      if (step % inc == 0)       animstep+=1;
      if (animstep > 8)       animstep=1;
      formOctopus();
    }
 else {
      remove();
    }
  }
}