Program: 30468
Project: 30468
Buggy source:
public void craftOrGetItem(final PacketPatternSlot packetPatternSlot){
  if (packetPatternSlot.slotItem != null && this.getCellInventory() != null) {
    final IAEItemStack out=packetPatternSlot.slotItem.copy();
    InventoryAdaptor inv=new AdaptorPlayerHand(this.getPlayerInv().player);
    final InventoryAdaptor playerInv=InventoryAdaptor.getAdaptor(this.getPlayerInv().player,EnumFacing.UP);
    if (packetPatternSlot.shift) {
      inv=playerInv;
    }
    if (!inv.simulateAdd(out.getItemStack()).isEmpty()) {
      return;
    }
    final IAEItemStack extracted=Platform.poweredExtraction(this.getPowerSource(),this.getCellInventory(),out,this.getActionSource());
    final EntityPlayer p=this.getPlayerInv().player;
    if (extracted != null) {
      inv.addItems(extracted.getItemStack());
      if (p instanceof EntityPlayerMP) {
        this.updateHeld((EntityPlayerMP)p);
      }
      this.detectAndSendChanges();
      return;
    }
    final InventoryCrafting ic=new InventoryCrafting(new ContainerNull(),3,3);
    final InventoryCrafting real=new InventoryCrafting(new ContainerNull(),3,3);
    for (int x=0; x < 9; x++) {
      ic.setInventorySlotContents(x,packetPatternSlot.pattern[x] == null ? ItemStack.EMPTY : packetPatternSlot.pattern[x].getItemStack());
    }
    final IRecipe r=Platform.findMatchingRecipe(ic,p.world);
    if (r == null) {
      return;
    }
    final IMEMonitor<IAEItemStack> storage=this.getPatternTerminal().getItemInventory();
    final IItemList<IAEItemStack> all=storage.getStorageList();
    final ItemStack is=r.getCraftingResult(ic);
    for (int x=0; x < ic.getSizeInventory(); x++) {
      if (!ic.getStackInSlot(x).isEmpty()) {
        final ItemStack pulled=Platform.extractItemsByRecipe(this.getPowerSource(),this.getActionSource(),storage,p.world,r,is,ic,ic.getStackInSlot(x),x,all,Actionable.MODULATE,ItemViewCell.createFilter(this.getViewCells()));
        real.setInventorySlotContents(x,pulled);
      }
    }
    final IRecipe rr=Platform.findMatchingRecipe(real,p.world);
    if (rr == r && Platform.itemComparisons().isSameItem(rr.getCraftingResult(real),is)) {
      final SlotCrafting sc=new SlotCrafting(p,real,this.cOut,0,0,0);
      sc.onTake(p,is);
      for (int x=0; x < real.getSizeInventory(); x++) {
        final ItemStack failed=playerInv.addItems(real.getStackInSlot(x));
        if (!failed.isEmpty()) {
          p.dropItem(failed,false);
        }
      }
      inv.addItems(is);
      if (p instanceof EntityPlayerMP) {
        this.updateHeld((EntityPlayerMP)p);
      }
      this.detectAndSendChanges();
    }
 else {
      for (int x=0; x < real.getSizeInventory(); x++) {
        final ItemStack failed=real.getStackInSlot(x);
        if (!failed.isEmpty()) {
          this.getCellInventory().injectItems(AEItemStack.create(failed),Actionable.MODULATE,new MachineSource(this.getPatternTerminal()));
        }
      }
    }
  }
}

Fixed version (ground truth):
public void craftOrGetItem(final PacketPatternSlot packetPatternSlot){
  if (packetPatternSlot.slotItem != null && this.getCellInventory() != null) {
    final IAEItemStack out=packetPatternSlot.slotItem.copy();
    InventoryAdaptor inv=new AdaptorPlayerHand(this.getPlayerInv().player);
    final InventoryAdaptor playerInv=InventoryAdaptor.getAdaptor(this.getPlayerInv().player,EnumFacing.UP);
    if (packetPatternSlot.shift) {
      inv=playerInv;
    }
    if (!inv.simulateAdd(out.getItemStack()).isEmpty()) {
      return;
    }
    final IAEItemStack extracted=Platform.poweredExtraction(this.getPowerSource(),this.getCellInventory(),out,this.getActionSource());
    final EntityPlayer p=this.getPlayerInv().player;
    if (extracted != null) {
      inv.addItems(extracted.getItemStack());
      if (p instanceof EntityPlayerMP) {
        this.updateHeld((EntityPlayerMP)p);
      }
      this.detectAndSendChanges();
      return;
    }
    final InventoryCrafting ic=new InventoryCrafting(new ContainerNull(),3,3);
    final InventoryCrafting real=new InventoryCrafting(new ContainerNull(),3,3);
    for (int x=0; x < 9; x++) {
      ic.setInventorySlotContents(x,packetPatternSlot.pattern[x] == null ? ItemStack.EMPTY : packetPatternSlot.pattern[x].getItemStack());
    }
    final IRecipe r=Platform.findMatchingRecipe(ic,p.world);
    if (r == null) {
      return;
    }
    final IMEMonitor<IAEItemStack> storage=this.getPatternTerminal().getItemInventory();
    final IItemList<IAEItemStack> all=storage.getStorageList();
    final ItemStack is=r.getCraftingResult(ic);
    for (int x=0; x < ic.getSizeInventory(); x++) {
      if (!ic.getStackInSlot(x).isEmpty()) {
        final ItemStack pulled=Platform.extractItemsByRecipe(this.getPowerSource(),this.getActionSource(),storage,p.world,r,is,ic,ic.getStackInSlot(x),x,all,Actionable.MODULATE,ItemViewCell.createFilter(this.getViewCells()));
        real.setInventorySlotContents(x,pulled);
      }
    }
    final IRecipe rr=Platform.findMatchingRecipe(real,p.world);
    if (rr == r && Platform.itemComparisons().isSameItem(rr.getCraftingResult(real),is)) {
      final InventoryCraftResult craftingResult=new InventoryCraftResult();
      craftingResult.setRecipeUsed(rr);
      final SlotCrafting sc=new SlotCrafting(p,real,craftingResult,0,0,0);
      sc.onTake(p,is);
      for (int x=0; x < real.getSizeInventory(); x++) {
        final ItemStack failed=playerInv.addItems(real.getStackInSlot(x));
        if (!failed.isEmpty()) {
          p.dropItem(failed,false);
        }
      }
      inv.addItems(is);
      if (p instanceof EntityPlayerMP) {
        this.updateHeld((EntityPlayerMP)p);
      }
      this.detectAndSendChanges();
    }
 else {
      for (int x=0; x < real.getSizeInventory(); x++) {
        final ItemStack failed=real.getStackInSlot(x);
        if (!failed.isEmpty()) {
          this.getCellInventory().injectItems(AEItemStack.create(failed),Actionable.MODULATE,new MachineSource(this.getPatternTerminal()));
        }
      }
    }
  }
}