Trouble maker

#!/bin/bash
lines_left=17090
while read -r line; do
 cp -p --parent "./armhf_w_ac100/$line" "./armhf_trusty"
 echo -ne "copying files, $lines_left files left. Current file: ./armhf_w_ac100/$line \033[0K\r";
 let lines_left=lines_left-1;
done < diff.log
echo -ne "Done! \033[0K\n"