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> Well I respect Mr.Lamport`s point, but to prove liveness you are almost doomed to use temporal logic.

I thought CSPm/FDR4 proved liveness on infinite event trails without temporal logic? Can't one extract "never" and "sooner or later" by just exploring the whole state space? Deadlock/livelock will never happen etc.

Yes, but what if you are unable to explore the whole state space due to its unboundedness? Then the only way I know is by deducing properties thru temporal reasoning.

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