Proof: Do Line At Unchanged 22

Let's prove the following theorem:

if the following are true:

expression state at time 22 = "call_function_begin"
the line at time 22 = 1

then the line at time 23 = 1

Proof:

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Given

1	expression state at time 22 = "call_function_begin"
2	the line at time 22 = 1

Proof Table

#	Claim	Reason
1	the line at time (22 + 1) = the line at time 22	if expression state at time 22 = "call_function_begin", then the line at time (22 + 1) = the line at time 22 (Assign Parent (6))
2	the line at time (22 + 1) = 1	if the line at time (22 + 1) = the line at time 22 and the line at time 22 = 1, then the line at time (22 + 1) = 1 (Transitive Property of Equality)
3	22 + 1 = 23	22 + 1 = 23 (Fixed Value Statement)
4	the line at time (22 + 1) = the line at time 23	if 22 + 1 = 23, then the line at time (22 + 1) = the line at time 23 (Substitution)
5	the line at time 23 = 1	if the line at time (22 + 1) = the line at time 23 and the line at time (22 + 1) = 1, then the line at time 23 = 1 (Transitive Property of Equality Variation 2)

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