Proof: Write Assign Const State 25

Let's prove the following theorem:

if the following are true:

the line at time 25 = 6
the tab at time 25 = 1
statement at line 6, tab 1 = a = 9
9 is constant

then expression state at time 26 = "not_expr"

Proof:

View as a tree | View dependent proofs | Try proving it

Given

1	the line at time 25 = 6
2	the tab at time 25 = 1
3	statement at line 6, tab 1 = `a = 9`
4	9 is constant

Proof Table

#	Claim	Reason
1	expression state at time (25 + 1) = "not_expr"	if the line at time 25 = 6 and the tab at time 25 = 1 and statement at line 6, tab 1 = `a = 9` and 9 is constant, then expression state at time (25 + 1) = "not_expr" (Assign Constant (5))
2	25 + 1 = 26	25 + 1 = 26 (Fixed Value Statement)
3	expression state at time (25 + 1) = expression state at time 26	if 25 + 1 = 26, then expression state at time (25 + 1) = expression state at time 26 (Substitution)
4	expression state at time 26 = "not_expr"	if expression state at time (25 + 1) = expression state at time 26 and expression state at time (25 + 1) = "not_expr", then expression state at time 26 = "not_expr" (Transitive Property of Equality Variation 2)

Comments

Please log in to add comments