/// <summary>
/// asserts that the treewidth that the algorithm finds is the graph's actual treewidth
/// </summary>
/// <param name="g">the graph to test</param>
/// <param name="treewidth">the graph's actual tree width</param>
private void AssertCorrectTreewidth(Graph g, int treewidth)
{
Treewidth.completeHeuristically = false;
Treewidth.moreThan2ComponentsOptimization = true;
Treewidth.keepOnlyPTDsWithLargerInletIfSameOutlet = true;
Treewidth.testOutletIsCliqueMinor = true;
PTD.testIfAddingOneVertexToBagFormsPMC = false;
ImmutableGraph h = new ImmutableGraph(g); // copy for check if treewidth is correct
Assert.AreEqual(treewidth, Treewidth.TreeWidth(g, out PTD output));
output.AssertValidTreeDecomposition(h);
}
private static int Run(string filepath, bool printTD = true, bool printStats = true)
{
Graph g = new Graph(filepath);
Stopwatch stopwatch = new Stopwatch();
SafeSeparator.size3SeparationStopwatch = new Stopwatch();
SafeSeparator.size3separators = 0;
SafeSeparator.cliqueSeparatorStopwatch = new Stopwatch();
SafeSeparator.cliqueSeparators = 0;
SafeSeparator.almostCliqueSeparatorStopwatch = new Stopwatch();
SafeSeparator.almostCliqueSeparators = 0;
stopwatch.Start();
int treeWidth = Treewidth.TreeWidth(g, out PTD output, printTD);
stopwatch.Stop();
if (printTD)
{
output.Print();
}
if (printStats)
{
Console.WriteLine("Tree decomposition of {0} found in {1} time. Treewidth is {2}.\n" +
"Found {3} size 3 separators in {4} total time.\n" +
"Found {5} clique Separators in {6} total time.\n" +
"Found {7} almost clique separators in {8} total time.\n",
filepath, stopwatch.Elapsed, treeWidth, SafeSeparator.size3separators, SafeSeparator.size3SeparationStopwatch.Elapsed,
SafeSeparator.cliqueSeparators - SafeSeparator.almostCliqueSeparators, SafeSeparator.cliqueSeparatorStopwatch.Elapsed - SafeSeparator.almostCliqueSeparatorStopwatch.Elapsed,
SafeSeparator.almostCliqueSeparators, SafeSeparator.almostCliqueSeparatorStopwatch.Elapsed);
}
g = new Graph(filepath);
output.AssertValidTreeDecomposition(new ImmutableGraph(g));
return(treeWidth);
}