Proof: Write Skip Line Line 3

Let's prove the following theorem:

if the following are true:
  • the line at time 3 = 4
  • the tab at time 3 = 1
  • statement at line 4, tab 2 = self.y = 0

then the line at time 4 = 5

Proof:

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

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