From a48f90a523c07b0f7346749891a8d3bf6479fe44 Mon Sep 17 00:00:00 2001
From: Sebastian Junges <sebastian.junges@rwth-aachen.de>
Date: Fri, 5 Oct 2018 17:29:11 +0200
Subject: [PATCH] Guard setInitialStates with hasInitialStatesRestriction

---
 src/storm/storage/jani/Automaton.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/storm/storage/jani/Automaton.cpp b/src/storm/storage/jani/Automaton.cpp
index 08cec4105..37924c221 100644
--- a/src/storm/storage/jani/Automaton.cpp
+++ b/src/storm/storage/jani/Automaton.cpp
@@ -444,9 +444,11 @@ namespace storm {
             for (auto& location : this->getLocations()) {
                 location.substitute(substitution);
             }
-            
-            this->setInitialStatesRestriction(substituteJaniExpression(this->getInitialStatesRestriction(), substitution));
-            
+
+            if (hasInitialStatesRestriction()) {
+                this->setInitialStatesRestriction(substituteJaniExpression(this->getInitialStatesRestriction(), substitution));
+            }
+
             edges.substitute(substitution);
         }
         void Automaton::registerTemplateEdge(std::shared_ptr<TemplateEdge> const& te) {