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diff --git a/src/util/util_model.h b/src/util/util_model.h
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+/*********************                                                        */
+/*! \file model.h
+ ** \verbatim
+ ** Original author: ajreynol
+ ** Major contributors: mdeters
+ ** Minor contributors (to current version): none
+ ** This file is part of the CVC4 prototype.
+ ** Copyright (c) 2009-2012  The Analysis of Computer Systems Group (ACSys)
+ ** Courant Institute of Mathematical Sciences
+ ** New York University
+ ** See the file COPYING in the top-level source directory for licensing
+ ** information.\endverbatim
+ **
+ ** \brief Model class
+ **/
+
+#include "cvc4_public.h"
+
+#ifndef __CVC4__MODEL_H
+#define __CVC4__MODEL_H
+
+#include <iostream>
+#include <vector>
+
+#include "expr/expr.h"
+#include "util/cardinality.h"
+
+namespace CVC4 {
+
+class CVC4_PUBLIC Command;
+class CVC4_PUBLIC SmtEngine;
+
+class CVC4_PUBLIC Model {
+private:
+  /** The SmtEngine we're associated to */
+  const SmtEngine& d_smt;
+public:
+  /** construct the base class */
+  Model();
+  /** virtual destructor */
+  virtual ~Model() { }
+  /** get number of commands to report */
+  size_t getNumCommands() const;
+  /** get command */
+  const Command* getCommand(size_t i) const;
+public:
+  /** get value for expression */
+  virtual Expr getValue(Expr expr) = 0;
+  /** get cardinality for sort */
+  virtual Cardinality getCardinality(Type t) = 0;
+  /** write the model to a stream */
+  virtual void toStream(std::ostream& out) = 0;
+};/* class Model */
+
+class ModelBuilder
+{
+public:
+  ModelBuilder(){}
+  virtual ~ModelBuilder(){}
+  virtual void buildModel( Model* m, bool fullModel ) = 0;
+};/* class ModelBuilder */
+
+}/* CVC4 namespace */
+
+#endif  /* __CVC4__MODEL_H */