Questions I met when running this code

[huang429]

I'm sorry to say that I don't understand the fourth step in the preparation of Trident.What would I do for choosing the LLVM IR instructions?And when I run the ./test，the log file "fi_breakdown.txt" didnot update the probabilities of SDC,Benign,Crash and breakdown.It just equals to the log file "fi_breakdown.txt" generated in ./inst_count.