if the following are true:

• the line at time 14 = 5
• the tab at time 14 = 1
• number of lines = 5 - 1
• Control Map at time 14 = [ entry 0: (pair ("if", False)), [ ] ]

then the line at time 15 = 5

Start from the conclusion and work back up the proof. Click the arrow to show the parents.