Program: 30612
Project: 30612
Buggy source:
public static ItemStack extractItemsByRecipe(IEnergySource energySrc,BaseActionSource mySrc,IMEMonitor<IAEItemStack> src,World w,IRecipe r,ItemStack output,InventoryCrafting ci,ItemStack providedTemplate,int slot,IItemList<IAEItemStack> aitems,Actionable realForFake){
  if (energySrc.extractAEPower(1,Actionable.SIMULATE,PowerMultiplier.CONFIG) > 0.9) {
    if (providedTemplate == null)     return null;
    AEItemStack ae_req=AEItemStack.create(providedTemplate);
    ae_req.setStackSize(1);
    IAEItemStack ae_ext=src.extractItems(ae_req,realForFake,mySrc);
    if (ae_ext != null) {
      ItemStack extracted=ae_ext.getItemStack();
      if (extracted != null) {
        energySrc.extractAEPower(1,realForFake,PowerMultiplier.CONFIG);
        return extracted;
      }
    }
    if (aitems != null && (ae_req.isOre() || providedTemplate.hasTagCompound() || providedTemplate.isItemStackDamageable())) {
      for (      IAEItemStack x : aitems) {
        ItemStack sh=x.getItemStack();
        if ((Platform.isSameItemType(providedTemplate,sh) || ae_req.sameOre(x)) && !Platform.isSameItem(sh,output)) {
          ItemStack cp=Platform.cloneItemStack(sh);
          cp.stackSize=1;
          ci.setInventorySlotContents(slot,cp);
          if (r.matches(ci,w) && Platform.isSameItem(r.getCraftingResult(ci),output)) {
            IAEItemStack ex=src.extractItems(AEItemStack.create(cp),realForFake,mySrc);
            if (ex != null) {
              energySrc.extractAEPower(1,realForFake,PowerMultiplier.CONFIG);
              return ex.getItemStack();
            }
          }
          ci.setInventorySlotContents(slot,providedTemplate);
        }
      }
    }
  }
  return null;
}

Fixed version (ground truth):
public static ItemStack extractItemsByRecipe(IEnergySource energySrc,BaseActionSource mySrc,IMEMonitor<IAEItemStack> src,World w,IRecipe r,ItemStack output,InventoryCrafting ci,ItemStack providedTemplate,int slot,IItemList<IAEItemStack> aitems,Actionable realForFake){
  if (energySrc.extractAEPower(1,Actionable.SIMULATE,PowerMultiplier.CONFIG) > 0.9) {
    if (providedTemplate == null)     return null;
    AEItemStack ae_req=AEItemStack.create(providedTemplate);
    ae_req.setStackSize(1);
    IAEItemStack ae_ext=src.extractItems(ae_req,realForFake,mySrc);
    if (ae_ext != null) {
      ItemStack extracted=ae_ext.getItemStack();
      if (extracted != null) {
        energySrc.extractAEPower(1,realForFake,PowerMultiplier.CONFIG);
        return extracted;
      }
    }
    if (aitems != null && (ae_req.isOre() || providedTemplate.hasTagCompound() || providedTemplate.isItemStackDamageable())) {
      for (      IAEItemStack x : aitems) {
        ItemStack sh=x.getItemStack();
        if ((Platform.isSameItemType(providedTemplate,sh) || ae_req.sameOre(x)) && !Platform.isSameItem(sh,output)) {
          ItemStack cp=Platform.cloneItemStack(sh);
          cp.stackSize=1;
          ci.setInventorySlotContents(slot,cp);
          if (r.matches(ci,w) && Platform.isSameItem(r.getCraftingResult(ci),output)) {
            IAEItemStack ax=x.copy();
            ax.setStackSize(1);
            IAEItemStack ex=src.extractItems(ax,realForFake,mySrc);
            if (ex != null) {
              energySrc.extractAEPower(1,realForFake,PowerMultiplier.CONFIG);
              return ex.getItemStack();
            }
          }
          ci.setInventorySlotContents(slot,providedTemplate);
        }
      }
    }
  }
  return null;
}