Proof: Do Object Store At Unchanged 21

Let's prove the following theorem:

if the following are true:

expression state at time 21 = "call_function_begin"
the expression at time 21 = __add__(a, 1)
Python Object Store at time 21 = [ ]

then Python Object Store at time 22 = [ ]

Proof:

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Given

1	expression state at time 21 = "call_function_begin"
2	the expression at time 21 = `__add__(a, 1)`
3	Python Object Store at time 21 = [ ]

Proof Table

#	Claim	Reason
1	Python Object Store at time (21 + 1) = Python Object Store at time 21	if expression state at time 21 = "call_function_begin" and the expression at time 21 = `__add__(a, 1)`, then Python Object Store at time (21 + 1) = Python Object Store at time 21 (Call Add Object Store)
2	Python Object Store at time (21 + 1) = [ ]	if Python Object Store at time (21 + 1) = Python Object Store at time 21 and Python Object Store at time 21 = [ ], then Python Object Store at time (21 + 1) = [ ] (Transitive Property of Equality)
3	21 + 1 = 22	21 + 1 = 22 (Fixed Value Statement)
4	Python Object Store at time (21 + 1) = Python Object Store at time 22	if 21 + 1 = 22, then Python Object Store at time (21 + 1) = Python Object Store at time 22 (Substitution)
5	Python Object Store at time 22 = [ ]	if Python Object Store at time (21 + 1) = Python Object Store at time 22 and Python Object Store at time (21 + 1) = [ ], then Python Object Store at time 22 = [ ] (Transitive Property of Equality Variation 2)

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