Proof: Do Line At Unchanged 64

Let's prove the following theorem:

if the following are true:
  • expression state at time 64 = "call_returned"
  • the line at time 64 = 11

then the line at time 65 = 11

Proof:

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Given
1 expression state at time 64 = "call_returned"
2 the line at time 64 = 11
Proof Table
# Claim Reason
1 the line at time (64 + 1) = the line at time 64 if expression state at time 64 = "call_returned", then the line at time (64 + 1) = the line at time 64
2 the line at time (64 + 1) = 11 if the line at time (64 + 1) = the line at time 64 and the line at time 64 = 11, then the line at time (64 + 1) = 11
3 64 + 1 = 65 64 + 1 = 65
4 the line at time (64 + 1) = the line at time 65 if 64 + 1 = 65, then the line at time (64 + 1) = the line at time 65
5 the line at time 65 = 11 if the line at time (64 + 1) = the line at time 65 and the line at time (64 + 1) = 11, then the line at time 65 = 11

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