Proof: Write Skip Line Line 2

Let's prove the following theorem:

if the following are true:
  • the line at time 2 = 3
  • the tab at time 2 = 1
  • statement at line 3, tab 2 = self.x = 0

then the line at time 3 = 4

Proof:

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Given
1 the line at time 2 = 3
2 the tab at time 2 = 1
3 statement at line 3, tab 2 = self.x = 0
Proof Table
# Claim Reason
1 2 > 1 2 > 1
2 the line at time (2 + 1) = 3 + 1 if the line at time 2 = 3 and the tab at time 2 = 1 and statement at line 3, tab 2 = self.x = 0 and 2 > 1, then the line at time (2 + 1) = 3 + 1
3 3 + 1 = 4 3 + 1 = 4
4 the line at time (2 + 1) = 4 if the line at time (2 + 1) = 3 + 1 and 3 + 1 = 4, then the line at time (2 + 1) = 4
5 2 + 1 = 3 2 + 1 = 3
6 the line at time (2 + 1) = the line at time 3 if 2 + 1 = 3, then the line at time (2 + 1) = the line at time 3
7 the line at time 3 = 4 if the line at time (2 + 1) = the line at time 3 and the line at time (2 + 1) = 4, then the line at time 3 = 4

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