Program: 177458
Project: 177458
Buggy source:
public boolean updateDynamicBlock(long currentTime,DynamicBlockUpdate update,boolean force){
  int bx=update.getX();
  int by=update.getY();
  int bz=update.getZ();
  Chunk c=region.getChunkFromBlock(bx,by,bz,LoadOption.NO_LOAD);
  if (c == null) {
    return true;
  }
  Block b=c.getBlock(bx,by,bz);
  Material m=b.getMaterial();
  if (m instanceof DynamicMaterial) {
    DynamicMaterial dm=(DynamicMaterial)m;
    Vector3[] range=(force) ? zeroVector3Array : dm.maxRange();
    if (range == null || range.length < 1) {
      range=zeroVector3Array;
    }
    Vector3 rangeHigh=range[0];
    Vector3 rangeLow=range.length < 2 ? range[0] : range[1];
    int rhx=(int)rangeHigh.getX();
    int rhy=(int)rangeHigh.getY();
    int rhz=(int)rangeHigh.getZ();
    if (rhx < 0 || rhy < 0 || rhz < 0) {
      throw new IllegalArgumentException("String_Node_Str");
    }
    int rlx=(int)rangeLow.getX();
    int rly=(int)rangeLow.getY();
    int rlz=(int)rangeLow.getZ();
    if (rlx < 0 || rly < 0 || rlz < 0) {
      throw new IllegalArgumentException("String_Node_Str");
    }
    int maxx=bx + rhx;
    int maxy=by + rhy;
    int maxz=bz + rhz;
    int minx=bx - rlx;
    int miny=by - rly;
    int minz=bz - rlz;
    int rs=Region.BLOCKS.SIZE;
    if (maxx >= rs || maxy >= rs || maxz >= rs || minx < 0 || miny < 0 || minz < 0) {
      return false;
    }
 else {
      long nextUpdate=dm.update(b,region,update.getNextUpdate(),update.getLastUpdate(),update.getHint());
      if (nextUpdate > 0) {
        add(new DynamicBlockUpdate(bx,by,bz,nextUpdate,currentTime,null));
      }
      return true;
    }
  }
 else {
    return true;
  }
}

Fixed version (ground truth):
public boolean updateDynamicBlock(long currentTime,DynamicBlockUpdate update,boolean force){
  TickStage.checkStage(TickStage.FINALIZE,regionThread);
  int bx=update.getX();
  int by=update.getY();
  int bz=update.getZ();
  Chunk c=region.getChunkFromBlock(bx,by,bz,LoadOption.NO_LOAD);
  if (c == null) {
    return true;
  }
  Block b=c.getBlock(bx,by,bz);
  Material m=b.getMaterial();
  if (m instanceof DynamicMaterial) {
    DynamicMaterial dm=(DynamicMaterial)m;
    Vector3[] range=(force) ? zeroVector3Array : dm.maxRange();
    if (range == null || range.length < 1) {
      range=zeroVector3Array;
    }
    Vector3 rangeHigh=range[0];
    Vector3 rangeLow=range.length < 2 ? range[0] : range[1];
    int rhx=(int)rangeHigh.getX();
    int rhy=(int)rangeHigh.getY();
    int rhz=(int)rangeHigh.getZ();
    if (rhx < 0 || rhy < 0 || rhz < 0) {
      throw new IllegalArgumentException("String_Node_Str");
    }
    int rlx=(int)rangeLow.getX();
    int rly=(int)rangeLow.getY();
    int rlz=(int)rangeLow.getZ();
    if (rlx < 0 || rly < 0 || rlz < 0) {
      throw new IllegalArgumentException("String_Node_Str");
    }
    int maxx=bx + rhx;
    int maxy=by + rhy;
    int maxz=bz + rhz;
    int minx=bx - rlx;
    int miny=by - rly;
    int minz=bz - rlz;
    int rs=Region.BLOCKS.SIZE;
    if (maxx >= rs || maxy >= rs || maxz >= rs || minx < 0 || miny < 0 || minz < 0) {
      return false;
    }
 else {
      long nextUpdate=dm.update(b,region,update.getNextUpdate(),update.getLastUpdate(),update.getHint());
      if (nextUpdate > 0) {
        add(new DynamicBlockUpdate(bx,by,bz,nextUpdate,currentTime,null));
      }
      return true;
    }
  }
 else {
    return true;
  }
}