Model-Checking/peterson.tla at master · Amithabh-A/Model-Checking · GitHub

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------------------------------ MODULE peterson ------------------------------
EXTENDS Integers

VARIABLES pc0, pc1, turn, intr0, intr1


Init == /\ pc0 = 0
        /\ pc1 = 0
        /\ turn = 0
        /\ intr0 = 0
        /\ intr1 = 0


l01 == /\ pc0 = 0
       /\ pc0' = 1
       /\ turn' = turn
       /\ intr0' = intr0
       /\ intr1' = intr1


l12 == /\ pc0 = 1
       /\ pc0' = 2
       /\ turn' = turn
       /\ intr0' = intr0
       /\ intr1' = intr1


l23 == /\ pc0 = 2
       /\ pc0' = 3
       /\ turn' = turn
       /\ intr0' = 1
       /\ intr1' = intr1


l34 == /\ pc0 = 3
       /\ pc0' = 4
       /\ turn' = 1
       /\ intr0' = intr0
       /\ intr1' = intr1


l44 == /\ pc0 = 4
       /\ pc0' = 4

       /\ turn = 1
       /\ intr1 = 1

       /\ turn' = turn
       /\ intr0' = intr0
       /\ intr1' = intr1


l45 == /\ pc0 = 4
       /\ pc0' = 5
       /\ intr0' = intr0
       /\ intr1' = intr1
       /\ turn' = turn
       /\ ~ (turn = 1 /\ intr1 = 1)


l56 == /\ pc0 = 5
       /\ pc0' = 6
       /\ intr0' = intr0
       /\ intr1' = intr1
       /\ turn' = turn


l67 == /\ pc0 = 6
       /\ pc0' = 7
       /\ intr0' = 0
       /\ intr1' = intr1
       /\ turn' = turn


l70 == /\ pc0 = 7
       /\ pc0' = 0
       /\ intr0' = intr0
       /\ intr1' = intr1
       /\ turn' = turn


m01 == /\ pc1 = 0
       /\ pc1' = 1
       /\ turn' = turn
       /\ intr1' = intr1
       /\ intr0' = intr0

m12 == /\ pc1 = 1
       /\ pc1' = 2
       /\ turn' = turn
       /\ intr1' = intr1
       /\ intr0' = intr0

m23 == /\ pc1 = 2
       /\ pc1' = 3
       /\ turn' = turn
       /\ intr1' = 1
       /\ intr0' = intr0

m34 == /\ pc1 = 3
       /\ pc1' = 4
       /\ turn' = 0
       /\ intr1' = intr1
       /\ intr0' = intr0


m44 == /\ pc1 = 4
       /\ pc1' = 4
       /\ turn = 0
       /\ intr0 = 1
       /\ turn' = turn
       /\ intr1' = intr1
       /\ intr0' = intr0


m45 == /\ pc1 = 4
       /\ pc1' = 5
       /\ intr1' = intr1
       /\ intr0' = intr0
       /\ turn' = turn
       /\ ~ (turn = 0 /\ intr1 = 1)

m56 == /\ pc1 = 5
       /\ pc1' = 6
       /\ intr1' = intr1
       /\ intr0' = intr0
       /\ turn' = turn


m67 == /\ pc1 = 6
       /\ pc1' = 7
       /\ intr1' = 0
       /\ intr0' = intr0
       /\ turn' = turn

m70 == /\ pc1 = 7
       /\ pc1' = 0
       /\ intr1' = intr1
       /\ intr0' = intr0
       /\ turn' = turn


SLOGP == UNCHANGED <<pc0, intr0, intr1, turn>>
SLOGQ == UNCHANGED <<pc1, intr0, intr1, turn>>

ro0 == \/ l01
       \/ l12
       \/ l23
       \/ l34
       \/ l44
       \/ l45
       \/ l56
       \/ l67
       \/ l70
       \/ SLOGP

ro1 == \/ m01
       \/ m12
       \/ m23
       \/ m34
       \/ m44
       \/ m45
       \/ m56
       \/ m67
       \/ m70
       \/ SLOGQ


Next == \/ (ro0 /\ pc1' = pc1)
        \/ (ro1 /\ pc0' = pc0)


=============================================================================
\* Modification History
\* Last modified Tue Feb 06 19:26:47 IST 2024 by amithabh_a
\* Created Mon Feb 05 13:48:01 IST 2024 by amithabh_a