Proof: Do Tab At Unchanged 60

Let's prove the following theorem:

if the following are true:

expression state at time 60 = "iterate_args"
the tab at time 60 = 2

then the tab at time 61 = 2

Proof:

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Given

1	expression state at time 60 = "iterate_args"
2	the tab at time 60 = 2

Proof Table

#	Claim	Reason
1	the tab at time (60 + 1) = the tab at time 60	if expression state at time 60 = "iterate_args", then the tab at time (60 + 1) = the tab at time 60 (Iterate Insn (4))
2	the tab at time (60 + 1) = 2	if the tab at time (60 + 1) = the tab at time 60 and the tab at time 60 = 2, then the tab at time (60 + 1) = 2 (Transitive Property of Equality)
3	60 + 1 = 61	60 + 1 = 61 (Fixed Value Statement)
4	the tab at time (60 + 1) = the tab at time 61	if 60 + 1 = 61, then the tab at time (60 + 1) = the tab at time 61 (Substitution)
5	the tab at time 61 = 2	if the tab at time (60 + 1) = the tab at time 61 and the tab at time (60 + 1) = 2, then the tab at time 61 = 2 (Transitive Property of Equality Variation 2)

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