Program: 165774
Project: 165774
Buggy source:
public static boolean isPeaceful(GlobalCoordinate coordinate){
  if (areas.isEmpty()) {
    return false;
  }
  List<GlobalCoordinate> toRemove=new ArrayList<>();
  boolean peaceful=false;
  long curtime=System.currentTimeMillis() - 10000;
  for (  Map.Entry<GlobalCoordinate,PeacefulArea> entry : areas.entrySet()) {
    PeacefulArea area=entry.getValue();
    GlobalCoordinate entryCoordinate=entry.getKey();
    if (area.in(coordinate,entryCoordinate)) {
      peaceful=true;
    }
    if (area.getLastTouched() < curtime) {
      WorldServer world=DimensionManager.getWorld(entryCoordinate.getDimension());
      if (world != null) {
        BlockPos c=entryCoordinate.getCoordinate();
        if (!world.getChunkProvider().chunkExists(c.getX() >> 4,c.getZ() >> 4)) {
          boolean removeArea=true;
          TileEntity te=world.getTileEntity(c);
          if (te instanceof EnvironmentalControllerTileEntity) {
            EnvironmentalControllerTileEntity controllerTileEntity=(EnvironmentalControllerTileEntity)te;
            for (            EnvironmentModule module : controllerTileEntity.getEnvironmentModules()) {
              if (module instanceof PeacefulEModule) {
                if (((PeacefulEModule)module).isActive()) {
                  removeArea=false;
                  break;
                }
              }
            }
          }
          if (removeArea) {
            toRemove.add(entryCoordinate);
          }
        }
      }
    }
  }
  for (  GlobalCoordinate globalCoordinate : toRemove) {
    areas.remove(globalCoordinate);
  }
  return peaceful;
}

Fixed version (ground truth):
public static boolean isPeaceful(GlobalCoordinate coordinate){
  if (areas.isEmpty()) {
    return false;
  }
  List<GlobalCoordinate> toRemove=new ArrayList<>();
  boolean peaceful=false;
  long curtime=System.currentTimeMillis() - 10000;
  for (  Map.Entry<GlobalCoordinate,PeacefulArea> entry : areas.entrySet()) {
    PeacefulArea area=entry.getValue();
    GlobalCoordinate entryCoordinate=entry.getKey();
    if (area.in(coordinate,entryCoordinate)) {
      peaceful=true;
    }
    if (area.getLastTouched() < curtime) {
      WorldServer world=DimensionManager.getWorld(entryCoordinate.getDimension());
      if (world != null) {
        BlockPos c=entryCoordinate.getCoordinate();
        if (RFToolsTools.chunkLoaded(world,c)) {
          boolean removeArea=true;
          TileEntity te=world.getTileEntity(c);
          if (te instanceof EnvironmentalControllerTileEntity) {
            EnvironmentalControllerTileEntity controllerTileEntity=(EnvironmentalControllerTileEntity)te;
            for (            EnvironmentModule module : controllerTileEntity.getEnvironmentModules()) {
              if (module instanceof PeacefulEModule) {
                if (((PeacefulEModule)module).isActive()) {
                  removeArea=false;
                  break;
                }
              }
            }
          }
          if (removeArea) {
            toRemove.add(entryCoordinate);
          }
        }
      }
    }
  }
  for (  GlobalCoordinate globalCoordinate : toRemove) {
    areas.remove(globalCoordinate);
  }
  return peaceful;
}