diff --git a/src/adapters/ExplicitModelAdapter.h b/src/adapters/ExplicitModelAdapter.h
index 55bb839f9..ff04feb33 100644
--- a/src/adapters/ExplicitModelAdapter.h
+++ b/src/adapters/ExplicitModelAdapter.h
@@ -183,27 +183,27 @@ private:
 	 */
 	void generateInitialStates() {
 		// Create a fresh state which can hold as many boolean and integer variables as there are.
-		std::vector<StateType*> states;
-		states.emplace_back();
-		states.back()->first.resize(this->booleanVariables.size());
-		states.back()->second.resize(this->integerVariables.size());
+		this->allStates.clear();
+		this->allStates.push_back(new StateType());
+		this->allStates[0]->first.resize(this->booleanVariables.size());
+		this->allStates[0]->second.resize(this->integerVariables.size());
 
 		// Start with boolean variables.
 		for (uint_fast64_t i = 0; i < this->booleanVariables.size(); ++i) {
 			// Check if an initial value is given
 			if (this->booleanVariables[i].getInitialValue().get() == nullptr) {
 				// No initial value was given.
-				uint_fast64_t size = states.size();
+				uint_fast64_t size = this->allStates.size();
 				for (uint_fast64_t pos = 0; pos < size; pos++) {
 					// Duplicate each state, one with true and one with false.
-					states.emplace_back(states[pos]);
-					std::get<0>(*states[pos])[i] = false;
-					std::get<0>(*states[size + pos])[i] = true;
+					this->allStates.push_back(new StateType(*this->allStates[pos]));
+					std::get<0>(*this->allStates[pos])[i] = false;
+					std::get<0>(*this->allStates[size + pos])[i] = true;
 				}
 			} else {
 				// Initial value was given.
-				bool initialValue = this->booleanVariables[i].getInitialValue()->getValueAsBool(states[0]);
-				for (auto it : states) {
+				bool initialValue = this->booleanVariables[i].getInitialValue()->getValueAsBool(this->allStates[0]);
+				for (auto it : this->allStates) {
 					std::get<0>(*it)[i] = initialValue;
 				}
 			}
@@ -213,28 +213,27 @@ private:
 			// Check if an initial value was given.
 			if (this->integerVariables[i].getInitialValue().get() == nullptr) {
 				// No initial value was given.
-				uint_fast64_t size = states.size();
-				int_fast64_t lower = this->integerVariables[i].getLowerBound()->getValueAsInt(states[0]);
-				int_fast64_t upper = this->integerVariables[i].getUpperBound()->getValueAsInt(states[0]);
+				uint_fast64_t size = this->allStates.size();
+				int_fast64_t lower = this->integerVariables[i].getLowerBound()->getValueAsInt(this->allStates[0]);
+				int_fast64_t upper = this->integerVariables[i].getUpperBound()->getValueAsInt(this->allStates[0]);
 
 				// Duplicate all states for all values in variable interval.
 				for (int_fast64_t value = lower; value <= upper; value++) {
 					for (uint_fast64_t pos = 0; pos < size; pos++) {
 						// If value is lower bound, we reuse the existing state, otherwise we create a new one.
-						if (value > lower) states.emplace_back(states[pos]);
+						if (value > lower) this->allStates.push_back(new StateType(*this->allStates[pos]));
 						// Set value to current state.
-						std::get<1>(*states[(value - lower) * size + pos])[i] = value;
+						std::get<1>(*this->allStates[(value - lower) * size + pos])[i] = value;
 					}
 				}
 			} else {
 				// Initial value was given.
-				int_fast64_t initialValue = this->integerVariables[i].getInitialValue()->getValueAsInt(states[0]);
-				for (auto it : states) {
+				int_fast64_t initialValue = this->integerVariables[i].getInitialValue()->getValueAsInt(this->allStates[0]);
+				for (auto it : this->allStates) {
 					std::get<1>(*it)[i] = initialValue;
 				}
 			}
 		}
-		
 	}
 
 	/*!