Description
Due to a problem in the Intel® Quartus® Prime Pro Edition Software version 18.1, you may see this error during the plan stage of compilation. This error will have the following stack trace:
Segment Violation at <>
Module: quartus_fit
RTM_CONSTRAINT_GRAPH::is_relevant_ct(unsigned int, unsigned int) const (tsm_rtm)
void RTM_MIN_COST_FLOW_RETIMER::init_flow_problem<lemon::NetworkSimplex<lemon::SmartDigraph, long, signed char>, true>(lemon::NetworkSimplex<lemon::SmartDigraph, long, signed char>&) (tsm_rtm)
Resolution
To work around this problem, either:
- Rerun the plan stage as this error occurs infrequently.
- Add this .qsf (Quartus Settings File) assignment to prevent the retimer from being run during the plan stage
- set_global_assignment -name FITTER_EARLY_RETIMING OFF
This problem is scheduled to be fixed in a future release of the Intel Quartus Prime Pro Edition Software.