Program: 165919
Project: 165919
Buggy source:
private boolean testAndConsumeCraftingItems(CraftingRecipe craftingRecipe,Map<Integer,ItemStack> undo){
  boolean internal=craftingRecipe.isCraftInternal();
  int keep=craftingRecipe.isKeepOne() ? 1 : 0;
  InventoryCrafting inventory=craftingRecipe.getInventory();
  for (int i=0; i < inventory.getSizeInventory(); i++) {
    ItemStack stack=inventory.getStackInSlot(i);
    if (stack != null) {
      int count=stack.stackSize;
      for (int j=0; j < CrafterContainer.BUFFER_SIZE; j++) {
        int slotIdx=CrafterContainer.SLOT_BUFFER + j;
        ItemStack input=inventoryHelper.getStackInSlot(slotIdx);
        if (input != null && input.stackSize > keep) {
          if (OreDictionary.itemMatches(stack,input,false)) {
            if (input.getItem().hasContainerItem(input)) {
              ItemStack containerItem=input.getItem().getContainerItem(input);
              if (containerItem != null) {
                if ((!containerItem.isItemStackDamageable()) || containerItem.getItemDamage() <= containerItem.getMaxDamage()) {
                  if (!placeResult(internal,containerItem,undo)) {
                    return false;
                  }
                }
              }
            }
            int ss=count;
            if (input.stackSize - ss < keep) {
              ss=input.stackSize - keep;
            }
            count-=ss;
            if (!undo.containsKey(slotIdx)) {
              undo.put(slotIdx,input.copy());
            }
            input.splitStack(ss);
            if (input.stackSize == 0) {
              inventoryHelper.setStackInSlot(slotIdx,null);
            }
          }
        }
        if (count == 0) {
          break;
        }
      }
      if (count > 0) {
        return false;
      }
    }
  }
  return true;
}

Fixed version (ground truth):
private boolean testAndConsumeCraftingItems(CraftingRecipe craftingRecipe,Map<Integer,ItemStack> undo){
  boolean internal=craftingRecipe.isCraftInternal();
  int keep=craftingRecipe.isKeepOne() ? 1 : 0;
  InventoryCrafting inventory=craftingRecipe.getInventory();
  for (int i=0; i < inventory.getSizeInventory(); i++) {
    ItemStack stack=inventory.getStackInSlot(i);
    if (stack != null) {
      int count=stack.stackSize;
      for (int j=0; j < CrafterContainer.BUFFER_SIZE; j++) {
        int slotIdx=CrafterContainer.SLOT_BUFFER + j;
        ItemStack input=inventoryHelper.getStackInSlot(slotIdx);
        if (input != null && input.stackSize > keep) {
          if (OreDictionary.itemMatches(stack,input,false)) {
            workInventory.setInventorySlotContents(i,input.copy());
            if (input.getItem().hasContainerItem(input)) {
              ItemStack containerItem=input.getItem().getContainerItem(input);
              if (containerItem != null) {
                if ((!containerItem.isItemStackDamageable()) || containerItem.getItemDamage() <= containerItem.getMaxDamage()) {
                  if (!placeResult(internal,containerItem,undo)) {
                    return false;
                  }
                }
              }
            }
            int ss=count;
            if (input.stackSize - ss < keep) {
              ss=input.stackSize - keep;
            }
            count-=ss;
            if (!undo.containsKey(slotIdx)) {
              undo.put(slotIdx,input.copy());
            }
            input.splitStack(ss);
            if (input.stackSize == 0) {
              inventoryHelper.setStackInSlot(slotIdx,null);
            }
          }
        }
        if (count == 0) {
          break;
        }
      }
      if (count > 0) {
        return false;
      }
    }
 else {
      workInventory.setInventorySlotContents(i,null);
    }
  }
  return true;
}