Program: 157088
Project: 157088
Buggy source:
public WrappedStack(Object object,int stackSize){
  if (object instanceof Item) {
    object=new ItemStack((Item)object);
  }
 else   if (object instanceof Block) {
    object=new ItemStack((Block)object);
  }
 else   if (object instanceof Fluid) {
    object=new FluidStack((Fluid)object,1000);
  }
  if (object instanceof ItemStack) {
    ItemStack itemStack=((ItemStack)object).copy();
    className=ItemStack.class.getSimpleName();
    this.stackSize=stackSize;
    itemStack.stackSize=1;
    wrappedStack=itemStack;
  }
 else   if (object instanceof OreStack) {
    OreStack oreStack=(OreStack)object;
    className=OreStack.class.getSimpleName();
    this.stackSize=stackSize;
    oreStack.stackSize=1;
    wrappedStack=oreStack;
  }
 else   if (object instanceof ArrayList) {
    ArrayList<?> objectList=(ArrayList<?>)object;
    OreStack possibleOreStack=OreStack.getOreStackFromList(objectList);
    if (possibleOreStack != null) {
      className=OreStack.class.getSimpleName();
      this.stackSize=stackSize;
      possibleOreStack.stackSize=1;
      wrappedStack=possibleOreStack;
    }
 else {
      this.stackSize=-1;
      className=null;
      wrappedStack=null;
    }
  }
 else   if (object instanceof EnergyStack) {
    EnergyStack energyStack=(EnergyStack)object;
    className=EnergyStack.class.getSimpleName();
    this.stackSize=stackSize;
    energyStack.stackSize=1;
    wrappedStack=energyStack;
  }
 else   if (object instanceof FluidStack) {
    FluidStack fluidStack=(FluidStack)object;
    className=FluidStack.class.getSimpleName();
    this.stackSize=stackSize;
    fluidStack.amount=1;
    wrappedStack=fluidStack;
  }
 else   if (object instanceof WrappedStack) {
    WrappedStack wrappedStackObject=(WrappedStack)object;
    if (wrappedStackObject.getWrappedStack() != null) {
      className=wrappedStackObject.wrappedStack.getClass().getSimpleName();
      this.stackSize=stackSize;
      this.wrappedStack=wrappedStackObject.wrappedStack;
    }
 else {
      className=null;
      this.stackSize=-1;
      wrappedStack=null;
    }
  }
 else   if (object instanceof String) {
    WrappedStack wrappedStack=createFromJson((String)object);
    if (wrappedStack != null && wrappedStack.getWrappedStack() != null) {
      className=wrappedStack.getWrappedStack().getClass().getSimpleName();
      this.stackSize=stackSize;
      this.wrappedStack=wrappedStack.wrappedStack;
    }
 else {
      className=null;
      this.stackSize=-1;
      this.wrappedStack=null;
    }
  }
 else {
    className=null;
    this.stackSize=-1;
    wrappedStack=null;
  }
}

Fixed version (ground truth):
public WrappedStack(Object object,int stackSize){
  if (object instanceof Item) {
    object=new ItemStack((Item)object);
  }
 else   if (object instanceof Block) {
    object=new ItemStack((Block)object);
  }
 else   if (object instanceof Fluid) {
    object=new FluidStack((Fluid)object,1000);
  }
  if (object instanceof ItemStack) {
    ItemStack itemStack=((ItemStack)object).copy();
    className=ItemStack.class.getSimpleName();
    this.stackSize=stackSize;
    itemStack.stackSize=1;
    wrappedStack=itemStack;
  }
 else   if (object instanceof OreStack) {
    OreStack oreStack=(OreStack)object;
    className=OreStack.class.getSimpleName();
    this.stackSize=stackSize;
    oreStack.stackSize=1;
    wrappedStack=oreStack;
  }
 else   if (object instanceof ArrayList) {
    ArrayList<?> objectList=(ArrayList<?>)object;
    OreStack possibleOreStack=OreStack.getOreStackFromList(objectList);
    if (possibleOreStack != null) {
      className=OreStack.class.getSimpleName();
      this.stackSize=stackSize;
      possibleOreStack.stackSize=1;
      wrappedStack=possibleOreStack;
    }
 else {
      this.stackSize=-1;
      className=null;
      wrappedStack=null;
    }
  }
 else   if (object instanceof EnergyStack) {
    EnergyStack energyStack=(EnergyStack)object;
    className=EnergyStack.class.getSimpleName();
    this.stackSize=stackSize;
    energyStack.stackSize=1;
    wrappedStack=energyStack;
  }
 else   if (object instanceof FluidStack) {
    FluidStack fluidStack=(FluidStack)object;
    className=FluidStack.class.getSimpleName();
    this.stackSize=stackSize;
    fluidStack.amount=1;
    wrappedStack=fluidStack;
  }
 else   if (object instanceof WrappedStack) {
    WrappedStack wrappedStackObject=(WrappedStack)object;
    if (wrappedStackObject.getWrappedStack() != null) {
      className=wrappedStackObject.wrappedStack.getClass().getSimpleName();
      this.stackSize=stackSize;
      this.wrappedStack=wrappedStackObject.wrappedStack;
    }
 else {
      className=null;
      this.stackSize=-1;
      wrappedStack=null;
    }
  }
 else   if (object instanceof String) {
    WrappedStack wrappedStack=createFromJson((String)object);
    if (wrappedStack != null && wrappedStack.getWrappedStack() != null) {
      className=wrappedStack.wrappedStack.getClass().getSimpleName();
      this.stackSize=stackSize;
      this.wrappedStack=wrappedStack.wrappedStack;
    }
 else {
      className=null;
      this.stackSize=-1;
      this.wrappedStack=null;
    }
  }
 else {
    className=null;
    this.stackSize=-1;
    wrappedStack=null;
  }
}