if the following are true:- instruction #21 is
load dst=3 addr=1 imm=0
- the PC at time 21 = 21
- value of cell 126 at time 21 = 3
load dst=3 addr=1 imm=0
then value of cell 126 at time 22 = 3
Start from the conclusion and work back up the proof. Click the arrow to show the parents.
- value of cell 126 at time 22 = 3,
if the following are true:
- a = b
- b = c
then a = c
- value of cell 126 at time 22 = value of cell 126 at time 21,
if the following are true:
- a = b
- a = c
then b = c
- value of cell 126 at time (21 + 1) = value of cell 126 at time 22,
if 21 + 1 = 22, then value of cell 126 at time (21 + 1) = value of cell 126 at time 22
- 21 + 1 = 22, 21 + 1 = 22
- value of cell 126 at time (21 + 1) = value of cell 126 at time 21,
if the following are true:
- instruction #i is
load dst=dst addr=addr imm=imm
- the PC at time t = i
- not (other = dst)
then value of cell other at time (t + 1) = value of cell other at time t
- instruction #21 is
load dst=3 addr=1 imm=0
- the PC at time 21 = 21
- not (126 = 3), not (126 = 3)
- instruction #i is
- value of cell 126 at time 21 = 3