adaption loop symmetrized w.r.t. increase and decrease of timestep

AMDiS/src/AdaptInfo.h

@@ -250,7 +250,8 @@ namespace AMDiS {
     {
       for (unsigned int i = 0; i < scalContents.size(); i++)
 	std::cout << "    Time error estimate = " << scalContents[i]->est_t_sum 
-		  << "    Time error bound = " << scalContents[i]->timeErrLow << "\n";
+		  << "    Time error low bound = " << scalContents[i]->timeErrLow  
+		  << "    Time error high bound = " << scalContents[i]->timeTolerance << "\n";
     }
 
     /// Returns \ref spaceIteration.

AMDiS/src/AdaptInstationary.cc

@@ -186,6 +186,10 @@ namespace AMDiS {
 	    !(adaptInfo->getTimestep() <= adaptInfo->getMinTimestep()) && 
 	    adaptInfo->getTimestepIteration() <= adaptInfo->getMaxTimestepIteration());  
     adaptInfo->setLastProcessedTimestep(adaptInfo->getTimestep()); 
+
+    // After successful iteration/timestep the timestep will be changed according 
+    // adaption rules for next timestep. 
+    // First, check for increase of timestep
     if (!fixedTimestep_ && adaptInfo->timeErrorLow()) {
       adaptInfo->setTimestep(adaptInfo->getTimestep() * time_delta_2);
       if (dbgMode) {
@@ -201,6 +205,12 @@ namespace AMDiS {
 	  adaptInfo->printTimeErrorLowInfo();
       }
     }
+    // Second, check for decrease of timestep
+    if (!fixedTimestep_ &&
+	!adaptInfo->timeToleranceReached() &&
+	!(adaptInfo->getTimestep() <= adaptInfo->getMinTimestep())) {
+	adaptInfo->setTimestep(adaptInfo->getTimestep() * time_delta_1);
+    }
   }
 
   void AdaptInstationary::oneTimestep()