A problem in testing static rewriting

[sikoushixinyou]

Hello ! I am very interested in your work.
After I downloaded the virtual machine you provided, I tried to run the following command ‘./cat_selective textfile’
But the following error message appeared：
sec@pc:~/artifact/selectivetaint$ ./cat_selective textfile
./cat_selective: error while loading shared libraries: libtaintutils.so: cannot open shared object file: No such file or directory

how should i fix this error？ Thank you !