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diff --git a/src/options/option_exception.h b/src/options/option_exception.h
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+/*********************                                                        */
+/*! \file option_exception.h
+ ** \verbatim
+ ** Original author: mdeters
+ ** Major contributors: taking, cconway
+ ** Minor contributors (to current version): dejan
+ ** 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 Options-related exceptions
+ **
+ ** Options-related exceptions.
+ **/
+
+#include "cvc4_public.h"
+
+#ifndef __CVC4__OPTION_EXCEPTION_H
+#define __CVC4__OPTION_EXCEPTION_H
+
+#include "util/exception.h"
+
+namespace CVC4 {
+
+/**
+ * Class representing an option-parsing exception such as badly-typed
+ * or missing arguments, arguments out of bounds, etc.  If an option
+ * name is itself unrecognized, a UnrecognizedOptionException (a derived
+ * class, below) should be used instead.
+ */
+class CVC4_PUBLIC OptionException : public CVC4::Exception {
+public:
+  OptionException(const std::string& s) throw() :
+    CVC4::Exception("Error in option parsing: " + s) {
+  }
+};/* class OptionException */
+
+/**
+ * Class representing an exception in option processing due to an
+ * unrecognized or unsupported option key.
+ */
+class CVC4_PUBLIC UnrecognizedOptionException : public CVC4::OptionException {
+public:
+  UnrecognizedOptionException() :
+    CVC4::OptionException("Unrecognized informational or option key or setting") {
+  }
+
+  UnrecognizedOptionException(const std::string& msg) :
+    CVC4::OptionException(msg) {
+  }
+};/* class UnrecognizedOptionException */
+
+}/* CVC4 namespace */
+
+#endif /* __CVC4__OPTION_EXCEPTION_H */