Determine what ingredient's effects are discovered

[Otaka ●]

I want to write the application that will extract the information from ESS save file about the discovered effect in each ingredient.
I found the following page http://en.uesp.net/wiki/Tes5Mod:Save_File_Format/Ingredient_Shared but it says, that save file contains table that has information about pairs of failed ingredients combinations. I checked it by myself with TESV ESS Files Editor. I started new game and mixed one potion, saved the game, and checked saved file, and saw that ingredient shared table is empty. After that I have mixed wrong combination, saved the game, and checked that shared ingredient table contains one entry with failed pair.
Tried to search for related questions in google and in this forum but unfortunately without success.
Does someone knows how the game understands what ingredient's effects are discovered and why it needs "failed ingredient pairs" table, instead of some "success ingredient pairs"?

[SeaGtGruff ●]

I don't know where the discovered traits are, but the failed pairs table is so it knows to tell you whether you've already tried a given pair (and failed) so you don't keep trying them together needlessly and wasting your ingredients.