* Small UMFPACK-Bug fix

AMDiS/src/UmfPackSolver.hh

@@ -162,7 +162,7 @@ namespace AMDiS {
 
     MSG("Residual: %e\n", this->residual);
       
-    if (this->residual < this->tolerance) {
+    if (this->residual > this->tolerance) {
       ERROR_EXIT("UMFPACK could not solve the system!\n");
     }