Proof: Do Line At Unchanged 31

Let's prove the following theorem:

if the following are true:
  • expression state at time 31 = "call_function_begin"
  • the line at time 31 = 4

then the line at time 32 = 4

Proof:

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Given
1 expression state at time 31 = "call_function_begin"
2 the line at time 31 = 4
Proof Table
# Claim Reason
1 the line at time (31 + 1) = the line at time 31 if expression state at time 31 = "call_function_begin", then the line at time (31 + 1) = the line at time 31
2 the line at time (31 + 1) = 4 if the line at time (31 + 1) = the line at time 31 and the line at time 31 = 4, then the line at time (31 + 1) = 4
3 31 + 1 = 32 31 + 1 = 32
4 the line at time (31 + 1) = the line at time 32 if 31 + 1 = 32, then the line at time (31 + 1) = the line at time 32
5 the line at time 32 = 4 if the line at time (31 + 1) = the line at time 32 and the line at time (31 + 1) = 4, then the line at time 32 = 4

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