diff --git a/src/ir/Assignment.h b/src/ir/Assignment.h
index a552bb750..308d1f27f 100644
--- a/src/ir/Assignment.h
+++ b/src/ir/Assignment.h
@@ -8,8 +8,7 @@
 #ifndef ASSIGNMENT_H_
 #define ASSIGNMENT_H_
 
-#include "expressions/Expressions.h"
-#include <boost/fusion/include/adapt_struct.hpp>
+#include "expressions/BaseExpression.h"
 
 namespace storm {
 
@@ -18,6 +17,28 @@ namespace ir {
 class Assignment {
 public:
 
+	Assignment() : variableName(""), expression(nullptr) {
+
+	}
+
+	Assignment(std::string variableName, std::shared_ptr<storm::ir::expressions::BaseExpression> expression)
+		: variableName(variableName), expression(expression) {
+
+	}
+
+	std::string getVariableName() {
+		return variableName;
+	}
+
+	std::shared_ptr<storm::ir::expressions::BaseExpression> getExpression() {
+		return expression;
+	}
+
+	std::string toString() {
+		return variableName + "' = " + expression->toString();
+	}
+
+private:
 	std::string variableName;
 	std::shared_ptr<storm::ir::expressions::BaseExpression> expression;
 };
@@ -26,10 +47,4 @@ public:
 
 }
 
-BOOST_FUSION_ADAPT_STRUCT(
-    storm::ir::Assignment,
-    (std::string, variableName)
-    (std::shared_ptr<storm::ir::expressions::BaseExpression>, expression)
-)
-
 #endif /* ASSIGNMENT_H_ */
diff --git a/src/ir/BooleanVariable.h b/src/ir/BooleanVariable.h
index 71e09e4ea..051982316 100644
--- a/src/ir/BooleanVariable.h
+++ b/src/ir/BooleanVariable.h
@@ -27,7 +27,7 @@ public:
 	}
 
 	virtual std::string toString() {
-		return variableName + ": bool;";
+		return getVariableName() + ": bool;";
 	}
 };
 
@@ -35,9 +35,4 @@ public:
 
 }
 
-BOOST_FUSION_ADAPT_STRUCT(
-    storm::ir::BooleanVariable,
-    (std::string, variableName)
-)
-
 #endif /* BOOLEANVARIABLE_H_ */
diff --git a/src/ir/Command.h b/src/ir/Command.h
index 92fd673f1..9a687eab6 100644
--- a/src/ir/Command.h
+++ b/src/ir/Command.h
@@ -16,25 +16,37 @@ namespace ir {
 
 class Command {
 public:
-	std::string commandName;
-	std::shared_ptr<storm::ir::expressions::BaseExpression> guardExpression;
-	std::vector<storm::ir::Update> updates;
+
+	Command() : commandName(""), guardExpression(nullptr), updates() {
+
+	}
+
+	Command(std::string commandName, std::shared_ptr<storm::ir::expressions::BaseExpression> guardExpression, std::vector<storm::ir::Update> updates)
+		: commandName(commandName), guardExpression(guardExpression), updates(updates) {
+
+	}
 
 	std::string toString() {
-		return "command!";
+		std::string result = "[" + commandName + "] " + guardExpression->toString() + " -> ";
+		for (uint_fast64_t i = 0; i < updates.size(); ++i) {
+			result += updates[i].toString();
+			if (i < updates.size() - 1) {
+				result += " + ";
+			}
+		}
+		result += ";";
+		return result;
 	}
 
+private:
+	std::string commandName;
+	std::shared_ptr<storm::ir::expressions::BaseExpression> guardExpression;
+	std::vector<storm::ir::Update> updates;
+
 };
 
 }
 
 }
 
-BOOST_FUSION_ADAPT_STRUCT(
-    storm::ir::Command,
-    (std::string, commandName)
-    (std::shared_ptr<storm::ir::expressions::BaseExpression>, guardExpression)
-    (std::vector<storm::ir::Update>, updates)
-)
-
 #endif /* COMMAND_H_ */
diff --git a/src/ir/IntegerVariable.h b/src/ir/IntegerVariable.h
index 58a6e8f52..0e8ab9521 100644
--- a/src/ir/IntegerVariable.h
+++ b/src/ir/IntegerVariable.h
@@ -29,17 +29,10 @@ public:
 	}
 
 	virtual std::string toString() {
-		return variableName + ": int[];";
-	}
-
-	void setLowerBound(std::shared_ptr<storm::ir::expressions::BaseExpression>& lowerBound) {
-		this->lowerBound = lowerBound;
-	}
-
-	void setUpperBound(std::shared_ptr<storm::ir::expressions::BaseExpression>& upperBound) {
-		this->upperBound = upperBound;
+		return getVariableName() + ": int[" + lowerBound->toString() + ".." + upperBound->toString() + "];";
 	}
 
+private:
 	std::shared_ptr<storm::ir::expressions::BaseExpression> lowerBound;
 	std::shared_ptr<storm::ir::expressions::BaseExpression> upperBound;
 };
diff --git a/src/ir/Module.h b/src/ir/Module.h
index d68503f78..02966a5a1 100644
--- a/src/ir/Module.h
+++ b/src/ir/Module.h
@@ -16,7 +16,16 @@ namespace ir {
 
 class Module {
 public:
-	Module() {
+	Module() : moduleName(""), booleanVariables(), integerVariables(), commands() {
+
+	}
+
+	Module(std::string moduleName, std::vector<storm::ir::BooleanVariable> booleanVariables, std::vector<storm::ir::IntegerVariable> integerVariables, std::vector<storm::ir::Command> commands)
+		: moduleName(moduleName), booleanVariables(booleanVariables), integerVariables(integerVariables), commands(commands) {
+
+	}
+
+	Module(std::string moduleName, std::vector<storm::ir::Command> commands) : moduleName(moduleName), booleanVariables(), integerVariables(), commands(commands) {
 
 	}
 
@@ -44,6 +53,7 @@ public:
 		integerVariables.push_back(variable);
 	}
 
+private:
 	std::string moduleName;
 
 	std::vector<storm::ir::BooleanVariable> booleanVariables;
@@ -56,10 +66,4 @@ public:
 
 }
 
-BOOST_FUSION_ADAPT_STRUCT(
-    storm::ir::Module,
-    (std::string, moduleName)
-    (std::vector<storm::ir::Command>, commands)
-)
-
 #endif /* MODULE_H_ */
diff --git a/src/ir/Program.h b/src/ir/Program.h
index 98b13e9de..16e213cab 100644
--- a/src/ir/Program.h
+++ b/src/ir/Program.h
@@ -18,15 +18,30 @@ namespace ir {
 
 class Program {
 public:
-	enum ModelType {DTMC, CTMC, MDP, CTMDP} modelType;
-	std::map<std::string, std::shared_ptr<storm::ir::expressions::BooleanConstantExpression>> booleanUndefinedConstantExpressions;
-	std::map<std::string, std::shared_ptr<storm::ir::expressions::IntegerConstantExpression>> integerUndefinedConstantExpressions;
-	std::map<std::string, std::shared_ptr<storm::ir::expressions::DoubleConstantExpression>> doubleUndefinedConstantExpressions;
-	std::vector<storm::ir::Module> modules;
-	std::map<std::string, storm::ir::RewardModel> rewards;
+
+	enum ModelType {DTMC, CTMC, MDP, CTMDP};
+
+	Program() : modelType(DTMC), booleanUndefinedConstantExpressions(), integerUndefinedConstantExpressions(), doubleUndefinedConstantExpressions(), modules(), rewards() {
+
+	}
+
+	Program(ModelType modelType, std::map<std::string, std::shared_ptr<storm::ir::expressions::BooleanConstantExpression>> booleanUndefinedConstantExpressions, std::map<std::string, std::shared_ptr<storm::ir::expressions::IntegerConstantExpression>> integerUndefinedConstantExpressions, std::map<std::string, std::shared_ptr<storm::ir::expressions::DoubleConstantExpression>> doubleUndefinedConstantExpressions, std::vector<storm::ir::Module> modules, std::map<std::string, storm::ir::RewardModel> rewards)
+		: modelType(modelType), booleanUndefinedConstantExpressions(booleanUndefinedConstantExpressions), integerUndefinedConstantExpressions(integerUndefinedConstantExpressions), doubleUndefinedConstantExpressions(doubleUndefinedConstantExpressions), modules(modules), rewards(rewards) {
+
+	}
+
+	Program(ModelType modelType, std::vector<storm::ir::Module> modules) : modelType(modelType), booleanUndefinedConstantExpressions(), integerUndefinedConstantExpressions(), doubleUndefinedConstantExpressions(), modules(modules), rewards() {
+
+	}
 
 	std::string toString() {
 		std::string result = "";
+		switch (modelType) {
+		case DTMC: result += "dtmc\n"; break;
+		case CTMC: result += "ctmc\n"; break;
+		case MDP: result += "mdp\n"; break;
+		case CTMDP: result += "ctmdp\n"; break;
+		}
 		for (auto element : booleanUndefinedConstantExpressions) {
 			result += "const bool " + element.first + ";\n";
 		}
@@ -55,18 +70,17 @@ public:
 		doubleUndefinedConstantExpressions[constantName] = constantExpression;
 	}
 
-	void setModules(std::vector<storm::ir::Module> modules) {
-		this->modules = modules;
-	}
+private:
+	ModelType modelType;
+	std::map<std::string, std::shared_ptr<storm::ir::expressions::BooleanConstantExpression>> booleanUndefinedConstantExpressions;
+	std::map<std::string, std::shared_ptr<storm::ir::expressions::IntegerConstantExpression>> integerUndefinedConstantExpressions;
+	std::map<std::string, std::shared_ptr<storm::ir::expressions::DoubleConstantExpression>> doubleUndefinedConstantExpressions;
+	std::vector<storm::ir::Module> modules;
+	std::map<std::string, storm::ir::RewardModel> rewards;
 };
 
 }
 
 }
 
-BOOST_FUSION_ADAPT_STRUCT(
-    storm::ir::Program,
-    (std::vector<storm::ir::Module>, modules)
-)
-
 #endif /* PROGRAM_H_ */
diff --git a/src/ir/RewardModel.h b/src/ir/RewardModel.h
index b53194668..16cb70f62 100644
--- a/src/ir/RewardModel.h
+++ b/src/ir/RewardModel.h
@@ -20,5 +20,4 @@ class RewardModel {
 
 }
 
-
 #endif /* REWARDMODEL_H_ */
diff --git a/src/ir/Update.h b/src/ir/Update.h
index 9cc1648a7..e2751703a 100644
--- a/src/ir/Update.h
+++ b/src/ir/Update.h
@@ -16,6 +16,27 @@ namespace ir {
 
 class Update {
 public:
+	Update() : likelihoodExpression(nullptr), assignments() {
+
+	}
+
+	Update(std::shared_ptr<storm::ir::expressions::BaseExpression> likelihoodExpression, std::vector<storm::ir::Assignment> assignments)
+		: likelihoodExpression(likelihoodExpression), assignments(assignments) {
+
+	}
+
+	std::string toString() {
+		std::string result = likelihoodExpression->toString() + " : ";
+		for (uint_fast64_t i = 0; i < assignments.size(); ++i) {
+			result += assignments[i].toString();
+			if (i < assignments.size() - 1) {
+				result += " & ";
+			}
+		}
+		return result;
+	}
+
+private:
 	std::shared_ptr<storm::ir::expressions::BaseExpression> likelihoodExpression;
 	std::vector<storm::ir::Assignment> assignments;
 };
@@ -24,10 +45,4 @@ public:
 
 }
 
-BOOST_FUSION_ADAPT_STRUCT(
-    storm::ir::Update,
-    (std::shared_ptr<storm::ir::expressions::BaseExpression>, likelihoodExpression)
-    (std::vector<storm::ir::Assignment>, assignments)
-)
-
 #endif /* UPDATE_H_ */
diff --git a/src/ir/Variable.h b/src/ir/Variable.h
index 4456ae8f1..abb62df35 100644
--- a/src/ir/Variable.h
+++ b/src/ir/Variable.h
@@ -14,8 +14,6 @@ namespace ir {
 
 class Variable {
 public:
-	std::string variableName;
-
 	Variable() {
 
 	}
@@ -32,9 +30,12 @@ public:
 		return variableName;
 	}
 
-	void setVariableName(std::string variableName) {
-		this->variableName = variableName;
+	std::string getVariableName() {
+		return variableName;
 	}
+
+private:
+	std::string variableName;
 };
 
 }
diff --git a/src/ir/expressions/BaseExpression.h b/src/ir/expressions/BaseExpression.h
index aea967901..9d6c93db2 100644
--- a/src/ir/expressions/BaseExpression.h
+++ b/src/ir/expressions/BaseExpression.h
@@ -21,7 +21,9 @@ public:
 
 	}
 
-	virtual std::string toString() const = 0;
+	virtual std::string toString() const {
+		return "expr here!";
+	}
 };
 
 }
diff --git a/src/parser/PrismParser.h b/src/parser/PrismParser.h
index 6a6a39476..14ca7fba3 100644
--- a/src/parser/PrismParser.h
+++ b/src/parser/PrismParser.h
@@ -98,7 +98,7 @@ private:
 			expression %= (booleanExpression | integerExpression | doubleExpression);
 
 			booleanVariableDefinition = (freeIdentifierName >> qi::lit(":") >> qi::lit("bool") >> qi::lit(";"))[qi::_val = phoenix::construct<storm::ir::BooleanVariable>(qi::_1), qi::_a = phoenix::construct<std::shared_ptr<storm::ir::expressions::VariableExpression>>(phoenix::new_<storm::ir::expressions::VariableExpression>(qi::_1)), phoenix::bind(booleanVariables_.add, qi::_1, qi::_a), phoenix::bind(booleanVariableNames_.add, qi::_1, qi::_1), phoenix::bind(allVariables_.add, qi::_1, qi::_a)];
-			integerVariableDefinition = (freeIdentifierName >> qi::lit(":") >> qi::lit("[") >> integerConstantExpression >> qi::lit("..") >> integerConstantExpression >> qi::lit("]") >> qi::lit(";"))[qi::_val = phoenix::construct<storm::ir::IntegerVariable>(qi::_1, qi::_2, qi::_3), qi::_a = phoenix::construct<std::shared_ptr<storm::ir::expressions::VariableExpression>>(phoenix::new_<storm::ir::expressions::VariableExpression>(qi::_1)), phoenix::bind(integerVariables_.add, qi::_1, qi::_a), phoenix::bind(integerVariableNames_.add, qi::_1, qi::_1), phoenix::bind(allVariables_.add, qi::_1, qi::_a), phoenix::bind(&storm::ir::IntegerVariable::setVariableName, qi::_val, qi::_1), phoenix::bind(&storm::ir::IntegerVariable::setLowerBound, qi::_val, qi::_2), phoenix::bind(&storm::ir::IntegerVariable::setUpperBound, qi::_val, qi::_3)];
+			integerVariableDefinition = (freeIdentifierName >> qi::lit(":") >> qi::lit("[") >> integerConstantExpression >> qi::lit("..") >> integerConstantExpression >> qi::lit("]") >> qi::lit(";"))[qi::_val = phoenix::construct<storm::ir::IntegerVariable>(qi::_1, qi::_2, qi::_3), qi::_a = phoenix::construct<std::shared_ptr<storm::ir::expressions::VariableExpression>>(phoenix::new_<storm::ir::expressions::VariableExpression>(qi::_1)), phoenix::bind(integerVariables_.add, qi::_1, qi::_a), phoenix::bind(integerVariableNames_.add, qi::_1, qi::_1), phoenix::bind(allVariables_.add, qi::_1, qi::_a)];
 			variableDefinition = (booleanVariableDefinition[phoenix::bind(&storm::ir::Module::addBooleanVariable, qi::_r1, qi::_1)] | integerVariableDefinition[phoenix::bind(&storm::ir::Module::addIntegerVariable, qi::_r1, qi::_1)]);
 
 			definedBooleanConstantDefinition = (qi::lit("const") >> qi::lit("bool") >> freeIdentifierName >> qi::lit("=") >> booleanLiteralExpression >> qi::lit(";"))[phoenix::bind(booleanConstants_.add, qi::_1, qi::_2), phoenix::bind(allConstants_.add, qi::_1, qi::_2), qi::_val = qi::_2];
@@ -116,17 +116,17 @@ private:
 			integerVariableName %= integerVariableNames_;
 			booleanVariableName %= booleanVariableNames_;
 
-			assignmentDefinition = qi::lit("(") >> integerVariableName >> qi::lit("'") >> integerExpression >> qi::lit(")") | qi::lit("(") >> booleanVariableName >> qi::lit("'") >> booleanExpression >> qi::lit(")");
+			assignmentDefinition = (qi::lit("(") >> integerVariableName >> qi::lit("'") >> integerExpression >> qi::lit(")"))[qi::_val = phoenix::construct<storm::ir::Assignment>(qi::_1, qi::_2)] | (qi::lit("(") >> booleanVariableName >> qi::lit("'") >> booleanExpression >> qi::lit(")"))[qi::_val = phoenix::construct<storm::ir::Assignment>(qi::_1, qi::_2)];
 			assignmentDefinitionList %= assignmentDefinition % "&";
-			updateDefinition %= doubleConstantExpression >> qi::lit(":") >> assignmentDefinitionList;
+			updateDefinition = (doubleConstantExpression >> qi::lit(":") >> assignmentDefinitionList)[qi::_val = phoenix::construct<storm::ir::Update>(qi::_1, qi::_2)];
 			updateListDefinition = +updateDefinition;
-			commandDefinition %= qi::lit("[") >> freeIdentifierName >> qi::lit("]") >> booleanExpression >> qi::lit("->") >> updateListDefinition >> qi::lit(";");
+			commandDefinition = (qi::lit("[") >> freeIdentifierName >> qi::lit("]") >> booleanExpression >> qi::lit("->") >> updateListDefinition >> qi::lit(";"))[qi::_val = phoenix::construct<storm::ir::Command>(qi::_1, qi::_2, qi::_3)];
 
-			moduleDefinition %= qi::lit("module") >> freeIdentifierName >> *variableDefinition(qi::_val) >> *commandDefinition >> qi::lit("endmodule");
+			moduleDefinition = (qi::lit("module") >> freeIdentifierName >> *variableDefinition(qi::_val) >> *commandDefinition >> qi::lit("endmodule"))[qi::_val = phoenix::construct<storm::ir::Module>(qi::_1, qi::_2)];
 
 			moduleDefinitionList = +moduleDefinition;
 
-			start = constantDefinitionList >> moduleDefinitionList;
+			start = (constantDefinitionList >> moduleDefinitionList)[qi::_val = phoenix::construct<storm::ir::Program>(storm::ir::Program::ModelType::DTMC, qi::_1)];
 		}
 
 		// The starting point of the grammar.