Z3 sources

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

lib/elim_distinct.h

@@ -0,0 +1,54 @@
+/*++
+Copyright (c) 2011 Microsoft Corporation
+
+Module Name:
+
+    elim_distinct.h
+
+Abstract:
+
+    Replace one distinct(t0, ..., tn) with (t0 = 0 and ... and tn = n)
+    when the sort of t0...tn is uninterpreted.
+
+Author:
+
+    Leonardo de Moura (leonardo) 2011-04-28
+
+Revision History:
+
+--*/
+#ifndef _ELIM_DISTINCT_H_
+#define _ELIM_DISTINCT_H_
+
+#include"assertion_set.h"
+
+class model_converter;
+class ast_manager;
+class assertion_set;
+
+class elim_distinct_exception : public default_exception {
+public:
+    elim_distinct_exception(char const * msg):default_exception(msg) {}
+};
+
+class elim_distinct {
+    struct imp;
+    imp *  m_imp;
+public:
+    elim_distinct(ast_manager & m);
+    ~elim_distinct();
+
+    /**
+       \brief It throws an elim_distinct_exception if the strategy failed.
+       If d == 0, then search for the biggest distinct(t0, ..., tn) in the assertion set.
+       if d != 0, then succeed only if d is in the assertion set.
+    */
+    model_converter * operator()(assertion_set & s, app * d);
+
+    void cancel();
+
+    void reset();
+    void cleanup();
+};
+
+#endif