There is no combination of olive oil, hcl acid and Epsom Salt that can produce soap... period. Go try it, mix up any comination of the above in a bowl and you will never be able to make a stone.
You can make soap out of olive oil and lye, but the amount of lye, if taken internally, would kill you. Some people don't need to take Epsom Salts to produce stones, they are only in the ingredient list to maiximize your chances of getting the stones out by relaxing/dilating the bile ducts.
Coagulated bile stones will melt in warm temperatures - or revert to a liquid bile state.