Having some trouble with the compareCFG.py script

[AnjaliPare]

Hi,

I am having some trouble running the compareCFG script. The cfg edges in ground truth vs compared are significantly different and lead to a very low precision and recall. I am not sure what is wrong but just to double check I ran the compare script with the gtBlock_test_switch.pb both as the ground truth (-g file) and the compared (-c file). The cfg edges found in ground truth and compared do not match even if it is the same .pb file. I have noticed a similar behavior with other binaries in the test suite and other disassembler tools such as angr and ghidra. Below you will find the commands that I executed and the corresponding result. Any help would be appreciated. Thank you!

python3 compareCFG.py -b ../gt/test/test_switch -g /tmp/gtBlock_test_switch.pb -c /tmp/angr_blocks.pb2

INFO:root:[CFG Result]: All cfg edges in ground truth is 0
INFO:root:[CFG Result]: All cfg edges in compared is 21
INFO:root:[CFG Result]: False positive number is 21
INFO:root:[CFG Result]: False negative number is 0
INFO:root:[CFG Result]: Precision 0.000000
Traceback (most recent call last):
File "compareCFG_orig.py", line 906, in
compareCFG(edges_truth, edges_comp)
File "compareCFG_orig.py", line 620, in compareCFG
logging.info("[CFG Result]: Recall %f" % (true_pos / len(cfg_ground)))
ZeroDivisionError: division by zero

[bin2415]

Hello, thanks for the reporting! I updated the script of comparing CFG. Note that our CFG do not split basic block at call site.
That means we do not consider call site as the edge of CFG.