Z3 sources

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

lib/sat_scc.h

@@ -0,0 +1,48 @@
+/*++
+Copyright (c) 2011 Microsoft Corporation
+
+Module Name:
+
+    sat_scc.h
+
+Abstract:
+
+    Use binary clauses to compute strongly connected components.
+
+Author:
+
+    Leonardo de Moura (leonardo) 2011-05-26.
+
+Revision History:
+
+--*/
+#ifndef _SAT_SCC_H_
+#define _SAT_SCC_H_
+
+#include"sat_types.h"
+#include"statistics.h"
+#include"params.h"
+
+namespace sat {
+    class solver;
+
+    class scc {
+        struct report;
+        solver &   m_solver;
+        // config
+        bool       m_scc;
+        // stats
+        unsigned   m_num_elim;
+    public:
+        scc(solver & s, params_ref const & p);
+        unsigned operator()();
+
+        void updt_params(params_ref const & p);
+        static void collect_param_descrs(param_descrs & d);
+
+        void collect_statistics(statistics & st);
+        void reset_statistics();
+    };
+};
+
+#endif