Set your Instant Pot to the saute setting
Add olive oil, garlic, onion, celery, carrots, and Italian seasoning. Saute until the onions are transparent.
Add beans, green beans, zucchini, pumpkin, tomatoes, vegetable broth, and bay leaf
Secure and lock the instant pot lid. Change the pressure release valve to "sealing"
Pressure cook on high pressure for 12 minutes
Cook small pasta on the stove while your soup is cooking.
Let pressure naturally release.
Remove bay leaf. Serve soup. Add the desired amount of pasta and parmesan cheese to each bowl when serving.