Program: 57208
Project: 57208
Buggy source:
@ListenTo(restrictExclusiveToEventSpace=true) public void onSelectedPathChanged(PathwayPathSelectionEvent event){
  if (!isPathFromPathway(event.getPathSegments(),pathway)) {
    selectedPathRenderer=null;
    return;
  }
  List<List<PathwayVertexRep>> selectedPathSegments=event.getPathSegmentsAsVertexList();
  boolean isSelectedPathShown=false;
  if (selectedPathRenderer != null) {
    isSelectedPathShown=PathUtil.isPathShown(selectedPathRenderer.pathSegments,selectedPathSegments,pathway);
    if (isSelectedPathShown)     return;
  }
  for (  APathwayPathRenderer renderer : renderers.keySet()) {
    isSelectedPathShown=PathUtil.isPathShown(renderer.pathSegments,selectedPathSegments,pathway);
    if (isSelectedPathShown) {
      selectedPathRenderer=renderer;
      return;
    }
  }
  APathwayPathRenderer pathRendererWithMostEqualNodes=null;
  int maxEqualVertices=0;
  int selectedPathRendererEqualVertices=0;
  for (  APathwayPathRenderer renderer : renderers.keySet()) {
    int numEqualVertices=PathUtil.getNumEqualVertices(renderer.pathSegments,selectedPathSegments);
    if (maxEqualVertices < numEqualVertices) {
      pathRendererWithMostEqualNodes=renderer;
      maxEqualVertices=numEqualVertices;
    }
    if (renderer == selectedPathRenderer) {
      selectedPathRendererEqualVertices=numEqualVertices;
    }
  }
  if (pathRendererWithMostEqualNodes == null) {
    selectedPathRenderer=addPath(selectedPathSegments);
  }
 else {
    if (selectedPathRendererEqualVertices >= maxEqualVertices) {
      pathRendererWithMostEqualNodes=selectedPathRenderer;
    }
    pathRendererWithMostEqualNodes.setPath(selectedPathSegments);
  }
  triggerMinSizeUpdate();
}

Fixed version (ground truth):
@ListenTo(restrictExclusiveToEventSpace=true) public void onSelectedPathChanged(PathwayPathSelectionEvent event){
  selectedPathSegments=event.getPathSegmentsAsVertexList();
  if (!isPathFromPathway(event.getPathSegments(),pathway)) {
    selectedPathRenderer=null;
    return;
  }
  List<List<PathwayVertexRep>> selectedPathSegments=event.getPathSegmentsAsVertexList();
  boolean isSelectedPathShown=false;
  if (selectedPathRenderer != null) {
    isSelectedPathShown=PathUtil.isPathShown(selectedPathRenderer.pathSegments,selectedPathSegments,pathway);
    if (isSelectedPathShown)     return;
  }
  for (  APathwayPathRenderer renderer : renderers.keySet()) {
    isSelectedPathShown=PathUtil.isPathShown(renderer.pathSegments,selectedPathSegments,pathway);
    if (isSelectedPathShown) {
      selectedPathRenderer=renderer;
      return;
    }
  }
  APathwayPathRenderer pathRendererWithMostEqualNodes=null;
  int maxEqualVertices=0;
  int selectedPathRendererEqualVertices=0;
  for (  APathwayPathRenderer renderer : renderers.keySet()) {
    int numEqualVertices=PathUtil.getNumEqualVertices(renderer.pathSegments,selectedPathSegments);
    if (maxEqualVertices < numEqualVertices) {
      pathRendererWithMostEqualNodes=renderer;
      maxEqualVertices=numEqualVertices;
    }
    if (renderer == selectedPathRenderer) {
      selectedPathRendererEqualVertices=numEqualVertices;
    }
  }
  if (pathRendererWithMostEqualNodes == null) {
    selectedPathRenderer=addPath(selectedPathSegments);
  }
 else {
    if (selectedPathRendererEqualVertices >= maxEqualVertices) {
      pathRendererWithMostEqualNodes=selectedPathRenderer;
    }
    pathRendererWithMostEqualNodes.setPath(selectedPathSegments);
  }
  triggerMinSizeUpdate();
}