Register 2 doesn’t have a minimum value, and the umax_value shown here in decimal corresponds to 0xFFFFFFFF, which is the largest value that can be held in an 8-byte register. In other words, at this point the register could hold any of its possible values.
In instruction 4, the contents of Register 2 are copied into Register 3, and then instruction 5 adds one to that value. Therefore, Register 3 could have any value that’s 1 or greater. You can see this in the state information for Register 3, which has umin_value set to 1, and a umax_value of 0xFFFFFFFF.
The maximum value that 8 bytes can represent should be 0xFFFFFFFFFFFFFFFF, not 0xFFFFFFFF. I'm not sure if my understanding is wrong.
The maximum value that 8 bytes can represent should be
0xFFFFFFFFFFFFFFFF, not0xFFFFFFFF. I'm not sure if my understanding is wrong.