There are 51 CSV files in the folder acts, and the file description is as follows:
   subject_generator_generation method.csv
   gubject: Flex, Grep (SIR), Gzip, Make, Sed, NanoXML, Siena, Findutils, Grep (CoRE), Cp, Cut, Du, Expr, Ls, Rm, Seq, Tail;
   generator: pict, acts
   generation method: bot (bottom up), top (top down), hyb (hybrid);
For example: Make_pict_bot.csv
    There are two columns in each file, the first column is the number of test cases executed, and the second column is the corresponding number of code coverage lines.