- Program 
  - FieldDecl name=fibs type=int size=10
  - MethodDecl name=calc_fib type=void params={n:int}
    - Block 
      - Assignment loc=fibs[n] expr=(fibs[(n-1)]+fibs[(n-2)])
  - MethodDecl name=main type=void params={}
    - Block 
      - Assignment loc=fibs[0] expr=1
      - Assignment loc=fibs[1] expr=1
      - ForLoop idx=i low=2 high=10
        - Block 
          - MethodCall name=calc_fib
            - Expr [loc]
              - Location name=i