Mention -pc flag in error message

src/storm/storage/prism/Program.cpp

@@ -1124,7 +1124,7 @@ namespace storm {
             if (this->getModelType() == Program::ModelType::DTMC || this->getModelType() == Program::ModelType::MDP) {
                 STORM_LOG_THROW(!hasMarkovianCommand, storm::exceptions::WrongFormatException, "Discrete-time model must not have Markovian commands.");
             } else if (this->getModelType() == Program::ModelType::CTMC) {
-                STORM_LOG_THROW(!hasProbabilisticCommand, storm::exceptions::WrongFormatException, "The input model is a CTMC, but uses probabilistic commands like they are used in PRISM. Please use Markovian commands instead or turn on the PRISM compatibility mode using the appropriate flag.");
+                STORM_LOG_THROW(!hasProbabilisticCommand, storm::exceptions::WrongFormatException, "The input model is a CTMC, but uses probabilistic commands like they are used in PRISM. Please use Markovian commands instead or turn on the PRISM compatibility mode using the flag '-pc'.");
             }
             
             // Now check the reward models.