Proof: Write Skip Line Line 6

Let's prove the following theorem:

if the following are true:
  • the line at time 6 = 7
  • the tab at time 6 = 1
  • statement at line 7, tab 2 = return self.age * 12

then the line at time 7 = 8

Proof:

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Given
1 the line at time 6 = 7
2 the tab at time 6 = 1
3 statement at line 7, tab 2 = return self.age * 12
Proof Table
# Claim Reason
1 2 > 1 2 > 1
2 the line at time (6 + 1) = 7 + 1 if the line at time 6 = 7 and the tab at time 6 = 1 and statement at line 7, tab 2 = return self.age * 12 and 2 > 1, then the line at time (6 + 1) = 7 + 1
3 7 + 1 = 8 7 + 1 = 8
4 the line at time (6 + 1) = 8 if the line at time (6 + 1) = 7 + 1 and 7 + 1 = 8, then the line at time (6 + 1) = 8
5 6 + 1 = 7 6 + 1 = 7
6 the line at time (6 + 1) = the line at time 7 if 6 + 1 = 7, then the line at time (6 + 1) = the line at time 7
7 the line at time 7 = 8 if the line at time (6 + 1) = the line at time 7 and the line at time (6 + 1) = 8, then the line at time 7 = 8

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