Total definition dependence should be skipped for primitive actions

sdg-core/src/main/java/es/upv/mist/slicing/graphs/jsysdg/JSysPDG.java

@@ -106,7 +106,7 @@ public class JSysPDG extends ESPDG {
             for (GraphNode<?> node : vertexSet()) {
                 for (VariableAction varAct : node.getVariableActions()) {
                     // Total definition dependence
-                    if (varAct.isUsage() || (varAct.isDefinition() && !varAct.isSynthetic())) {
+                    if (!varAct.isPrimitive() && (varAct.isUsage() || (varAct.isDefinition() && !varAct.isSynthetic()))) {
                         // root
                         jSysCFG.findLastTotalDefinitionOf(varAct, "-root-").forEach(totalDef -> addTotalDefinitionDependencyArc(totalDef, varAct, "-root-"));
                         // members