Do not show a conversion warning if no conversion happens.

src/storm-cli-utilities/model-handling.h

@@ -300,8 +300,8 @@ namespace storm {
                 auto builderType = storm::utility::getBuilderType(mpi.engine);
                 bool transformToJaniForJit = builderType == storm::builder::BuilderType::Jit;
                 STORM_LOG_WARN_COND(mpi.transformToJani || !transformToJaniForJit, "The JIT-based model builder is only available for JANI models, automatically converting the PRISM input model.");
-                bool transformToJaniForDdMA = (builderType == storm::builder::BuilderType::Dd) && (input.model->getModelType() == storm::storage::SymbolicModelDescription::ModelType::MA);
-                STORM_LOG_WARN_COND(mpi.transformToJani || !transformToJaniForDdMA, "Dd-based model builder for Markov Automata is only available for JANI models, automatically converting the PRISM input model.");
+                bool transformToJaniForDdMA = (builderType == storm::builder::BuilderType::Dd) && (input.model->getModelType() == storm::storage::SymbolicModelDescription::ModelType::MA) && (!input.model->isJaniModel());
+                STORM_LOG_WARN_COND(mpi.transformToJani || !transformToJaniForDdMA, "Dd-based model builder for Markov Automata is only available for JANI models, automatically converting the input model.");
                 mpi.transformToJani |= (transformToJaniForJit || transformToJaniForDdMA);
             }