// Place global declarations here.
// Channels between the customer Eric and the ATM
chan bank_card,
request, // request for 10 euro by Eric to the ATM
cash;
// Channels between the ATM and the bank
chan ask_permission, // request to pay out 10 euro
OK,
not_OK;Eric
int cash_in_pocket=0; // cash in Eric's pocketIS_AT_ATMREADYATM
int in_till = 200; // amount of cash in the ATM's tillALMOST_READYREADY_TO_PAY_OUTREADYBank
int balance=80; // balance of Eric's bank account READY
// The system consists of Eric, an ATM, and a Back.
// There is only interaction between Eric and the ATM
// and between the ATM and the Bank.
system Eric, Bank, ATM;