English to LTL Formalize in LTL the following statements about the vending machine example. (Note that we are not concerned in this problem whether the statements hold or not for the machine.) 1. A machine that starts stocked with coffee will eventually run out of it. 2. The machine is restocked with soda as soon as it is out of it. 3. Professors sometimes leave the machine without taking their drink. 4. If a professor forgets coins or a drink in the machine, there will be a student there as soon as the professor leaves. 5. If, when a professor arrives, there is a coin in the coin slot, the professor will leave it there and leave without getting a drink. 6. If the machine has no soda, there will be no students at the machine for at least the next two transitions.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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English to LTL
Formalize in LTL the following statements about the vending machine example. (Note that we are not concerned in this problem whether the statements hold or not for the machine.)
1. A machine that starts stocked with coffee will eventually run out of it.
2. The machine is restocked with soda as soon as it is out of it.
3. Professors sometimes leave the machine without taking their drink.
4. If a professor forgets coins or a drink in the machine, there will be a student there as soon as the professor leaves.
5. If, when a professor arrives, there is a coin in the coin slot, the professor will leave it there
and leave without getting a drink.
6. If the machine has no soda, there will be no students at the machine for at least the next two transitions.

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