Proof: Do Line At Unchanged 78

Let's prove the following theorem:

if the following are true:
  • expression state at time 78 = "call_function_begin"
  • the line at time 78 = 9

then the line at time 79 = 9

Proof:

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Given
1 expression state at time 78 = "call_function_begin"
2 the line at time 78 = 9
Proof Table
# Claim Reason
1 the line at time (78 + 1) = the line at time 78 if expression state at time 78 = "call_function_begin", then the line at time (78 + 1) = the line at time 78
2 the line at time (78 + 1) = 9 if the line at time (78 + 1) = the line at time 78 and the line at time 78 = 9, then the line at time (78 + 1) = 9
3 78 + 1 = 79 78 + 1 = 79
4 the line at time (78 + 1) = the line at time 79 if 78 + 1 = 79, then the line at time (78 + 1) = the line at time 79
5 the line at time 79 = 9 if the line at time (78 + 1) = the line at time 79 and the line at time (78 + 1) = 9, then the line at time 79 = 9

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