Proof: Load 14
Let's prove the following theorem:
if the following are true:
- instruction #0 is
load dst=7 addr=5 imm=0 - the PC at time 14 = 0
- value of cell 5 at time 14 = 10
- value of cell 10 at time 14 = 45
then value of cell 7 at time 15 = 45
Proof:
Given
| 1 | instruction #0 is load dst=7 addr=5 imm=0 |
|---|---|
| 2 | the PC at time 14 = 0 |
| 3 | value of cell 5 at time 14 = 10 |
| 4 | value of cell 10 at time 14 = 45 |
| # | Claim | Reason |
|---|---|---|
| 1 | value of cell 7 at time (14 + 1) = value of cell ((value of cell 5 at time 14) + 0) at time 14 | if instruction #0 is load dst=7 addr=5 imm=0 and the PC at time 14 = 0, then value of cell 7 at time (14 + 1) = value of cell ((value of cell 5 at time 14) + 0) at time 14 |
| 2 | (value of cell 5 at time 14) + 0 = 10 + 0 | if value of cell 5 at time 14 = 10, then (value of cell 5 at time 14) + 0 = 10 + 0 |
| 3 | 10 + 0 = 10 | 10 + 0 = 10 |
| 4 | (value of cell 5 at time 14) + 0 = 10 | if (value of cell 5 at time 14) + 0 = 10 + 0 and 10 + 0 = 10, then (value of cell 5 at time 14) + 0 = 10 |
| 5 | value of cell ((value of cell 5 at time 14) + 0) at time 14 = value of cell 10 at time 14 | if (value of cell 5 at time 14) + 0 = 10, then value of cell ((value of cell 5 at time 14) + 0) at time 14 = value of cell 10 at time 14 |
| 6 | value of cell ((value of cell 5 at time 14) + 0) at time 14 = 45 | if value of cell ((value of cell 5 at time 14) + 0) at time 14 = value of cell 10 at time 14 and value of cell 10 at time 14 = 45, then value of cell ((value of cell 5 at time 14) + 0) at time 14 = 45 |
| 7 | value of cell 7 at time (14 + 1) = 45 | if value of cell 7 at time (14 + 1) = value of cell ((value of cell 5 at time 14) + 0) at time 14 and value of cell ((value of cell 5 at time 14) + 0) at time 14 = 45, then value of cell 7 at time (14 + 1) = 45 |
| 8 | 14 + 1 = 15 | 14 + 1 = 15 |
| 9 | value of cell 7 at time (14 + 1) = value of cell 7 at time 15 | if 14 + 1 = 15, then value of cell 7 at time (14 + 1) = value of cell 7 at time 15 |
| 10 | value of cell 7 at time 15 = 45 | if value of cell 7 at time (14 + 1) = value of cell 7 at time 15 and value of cell 7 at time (14 + 1) = 45, then value of cell 7 at time 15 = 45 |
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