A real-time refinement calculus that changes only time

@inproceedings{Utting1996ARR,
  title={A real-time refinement calculus that changes only time},
  author={Mark Utting and Colin Fidge},
  year={1996}
}
The behaviour of a real-time system that interacts repeatedly with its environment is most succinctly specified by its possible traces, or histories. We present a way of using the refinement calculus for developing real-time programs from requirements expressed in this form. Our trace-based specification statements and target language constructs constrain the traces of system variables, rather than updating them destructively like the usual state-machine model. The only variable that is updated… CONTINUE READING

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