Proof: Write Assign End Stack 76

Let's prove the following theorem:

if the following are true:

the line at time 76 = 9
the tab at time 76 = 0
statement at line 9, tab 0 = age = p.age_in_months()
stack at time 76 = [ ]
expression state at time 76 = "end_expr"

then stack at time 77 = [ ]

Proof:

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Given

1	the line at time 76 = 9
2	the tab at time 76 = 0
3	statement at line 9, tab 0 = `age = p.age_in_months()`
4	stack at time 76 = [ ]
5	expression state at time 76 = "end_expr"

Proof Table

#	Claim	Reason
1	stack at time (76 + 1) = stack at time 76	if the line at time 76 = 9 and the tab at time 76 = 0 and statement at line 9, tab 0 = `age = p.age_in_months()` and expression state at time 76 = "end_expr", then stack at time (76 + 1) = stack at time 76 (Assign Variable to Method Call Result (4))
2	stack at time (76 + 1) = [ ]	if stack at time (76 + 1) = stack at time 76 and stack at time 76 = [ ], then stack at time (76 + 1) = [ ] (Transitive Property of Equality)
3	76 + 1 = 77	76 + 1 = 77 (Fixed Value Statement)
4	stack at time (76 + 1) = stack at time 77	if 76 + 1 = 77, then stack at time (76 + 1) = stack at time 77 (Substitution)
5	stack at time 77 = [ ]	if stack at time (76 + 1) = stack at time 77 and stack at time (76 + 1) = [ ], then stack at time 77 = [ ] (Transitive Property of Equality Variation 2)

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