Since you arrived in the United States in 2016 on a F-1 Visa, you are unable to count the days present in the U.S. for part of five calendar years toward the Substantial Presence Test.
You are considered a Nonresident Alien for Tax purposes in 2019 and you must file a Form 1040-NR.
The treaty says that you are exempt from taxation and not that you are a Resident Alien.
When you file the Form 1040-NR you can exclude the income from taxation and you must attach a Form 8833 stating the Treaty Article supporting your exemption.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
