small fix for solver to work with timeout

Former-commit-id: a029597160

src/solver/Smt2SmtSolver.cpp

@@ -313,17 +313,19 @@ namespace storm {
         
         void Smt2SmtSolver::checkForErrorMessage(const std::string message){
             size_t errorOccurrance = message.find("error");
-            if (errorOccurrance!=std::string::npos){
-                this->needsRestart=true;
             //do not throw an exception for timeout or memout errors
             if(message.find("timeout")!=std::string::npos){
                 STORM_LOG_INFO("SMT solver answered: '" << message << "' and I am interpreting this as timeout ");
+                this->needsRestart=true;
+                this->processIdOfSolver=0;
             }
             else if(message.find("memory")!=std::string::npos){
                 STORM_LOG_INFO("SMT solver answered: '" << message << "' and I am interpreting this as out of memory ");
+                this->needsRestart=true;
                 this->processIdOfSolver=0;
             }
-                else{
+            else if(errorOccurrance!=std::string::npos){
+                this->needsRestart=true;
                 std::string errorMsg = "An error was detected while checking the solver output. ";
                 STORM_LOG_DEBUG("Detected an error message in the solver response:\n" + message);
                 size_t firstQuoteSign = message.find('\"',errorOccurrance);
@@ -344,4 +346,3 @@ namespace storm {
         }
     }
 }
-}