```uclid
module dining_philosophers

var phil1 : boolean;
var phil2 : boolean;
var phil3 : boolean;
var phil4 : boolean;
var phil5 : boolean;
var chopstick1 : boolean;
var chopstick2 : boolean;
var chopstick3 : boolean;
var chopstick4 : boolean;
var chopstick5 : boolean;

define philosopher1_can_eat = (phil1 => chopstick1 /\ chopstick5);
define philosopher2_can_eat = (phil2 => chopstick1 /\ chopstick2);
define philosopher3_can_eat = (phil3 => chopstick2 /\ chopstick3);
define philosopher4_can_eat = (phil4 => chopstick3 /\ chopstick4);
define philosopher5_can_eat = (phil5 => chopstick4 /\ chopstick5);

property deadlock_not_possible = (philosopher1_can_eat + philosopher2_can_eat + philosopher3_can_eat + philosopher4_can_eat + philosopher5_can_eat) <= 1;
```