Replying to Advice

So basically i went to a house with a friend and partied. The people were out of town and we had no idea it wasn't the girls house. The i didn't drink because i recently got arrested for stealing. I did nothing wrong and we left in the morning because our ride was drinking. Now the cops found out and are questioning names on the beer pong list. My name wasnt on the list because i had not been drinking but someone gave them my name. The cops came the next morning after we were gone and they found the house in the condition its in. I just had to Talk to two detectives about what i did wrong when i had no idea it wasnt the girls house. Now they are saying they are going to dna test all these pipes when i didnt even smoke. They are saying that everyone there could get three felony counts which is 50 kids. What is going on?