void CreateGraphAndRemoveCycles()
{
//edges in the graph go from a smaller value to a bigger value
graph = new BasicGraphOnEdges <IntPair>(constraints, varList.Count + boundsToInt.Count);
//removing cycles
var feedbackSet = CycleRemoval <IntPair> .GetFeedbackSet(graph);
if (feedbackSet != null)
{
foreach (var edge in feedbackSet)
{
graph.RemoveEdge(edge as IntPair);
}
}
}
