checkpoint

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>

src/smt/smt_failure.h

@@ -0,0 +1,40 @@
+/*++
+Copyright (c) 2012 Microsoft Corporation
+
+Module Name:
+
+    smt_failure.h
+
+Abstract:
+
+    Failures
+    
+Author:
+
+    Leonardo de Moura (leonardo) 2012-02-09.
+
+Revision History:
+
+--*/
+#ifndef _SMT_FAILURE_H_
+#define _SMT_FAILURE_H_
+
+namespace smt {
+
+    /**
+       \brief Reason for a l_undef result in the check method.
+    */
+    enum failure {
+        OK,
+        UNKNOWN,
+        TIMEOUT,    
+        MEMOUT,     
+        CANCELED,      //!< External cancel flag was set
+        NUM_CONFLICTS, //!< Maximum number of conflicts was reached
+        THEORY,        //!< Theory is incomplete
+        QUANTIFIERS    //!< Logical context contains universal quantifiers.
+    };
+
+};
+
+#endif