Proof: Do Line At Unchanged 73

Let's prove the following theorem:

if the following are true:

expression state at time 73 = "begin_expr"
the line at time 73 = 9

then the line at time 74 = 9

Proof:

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

Given

1	expression state at time 73 = "begin_expr"
2	the line at time 73 = 9

Proof Table

#	Claim	Reason
1	the line at time (73 + 1) = the line at time 73	if expression state at time 73 = "begin_expr", then the line at time (73 + 1) = the line at time 73 (Insn Count Begin Expression (3))
2	the line at time (73 + 1) = 9	if the line at time (73 + 1) = the line at time 73 and the line at time 73 = 9, then the line at time (73 + 1) = 9 (Transitive Property of Equality)
3	73 + 1 = 74	73 + 1 = 74 (Fixed Value Statement)
4	the line at time (73 + 1) = the line at time 74	if 73 + 1 = 74, then the line at time (73 + 1) = the line at time 74 (Substitution)
5	the line at time 74 = 9	if the line at time (73 + 1) = the line at time 74 and the line at time (73 + 1) = 9, then the line at time 74 = 9 (Transitive Property of Equality Variation 2)

Comments

Please log in to add comments