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NEXT (ABD - Sequence Constraint as a Suffix Implication)
PSL: Further Temporal Layer Operators
PSL sequences can
be combined with implication and conjunction operators in the `temporal layer'.
- { P |-> Q } P is followed by Q (one state overlapping),
- { P |=> Q } P is followed by Q (immediately afterwards),
- { P && Q } P and Q occur at once (length matching),
- { P & Q } P and Q succeed at once,
- { P within Q } P occurred at some point during Q,
- { P until Q } P held at all times until Q started,
- { P before Q } P held before Q held.