add ddnf tests, add facility to solve QF_NRA + QF_UF(and other theories) in joint solver to allow broader use of QF_NRA core

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

src/tactic/smtlogics/qfufnra_tactic.cpp

@@ -0,0 +1,46 @@
+/*++
+Copyright (c) 2015 Microsoft Corporation
+
+Module Name:
+
+    qfufnra_tactic.cpp
+
+Abstract:
+
+    Tactic for QF_UFNRA
+
+Author:
+
+    Nikolaj (nbjorner) 2015-05-05
+
+Notes:
+
+--*/
+#include"tactical.h"
+#include"simplify_tactic.h"
+#include"propagate_values_tactic.h"
+#include"nl_purify_tactic.h"
+#include"qfufnra_tactic.h"
+#include"purify_arith_tactic.h"
+#include"solve_eqs_tactic.h"
+#include"elim_term_ite_tactic.h"
+#include"elim_uncnstr_tactic.h"
+#include"simplify_tactic.h"
+#include"nnf_tactic.h"
+
+
+tactic * mk_qfufnra_tactic(ast_manager & m, params_ref const& p) {
+
+    return and_then(and_then(mk_simplify_tactic(m, p), 
+                             mk_purify_arith_tactic(m, p),
+                             mk_propagate_values_tactic(m, p),
+                             mk_solve_eqs_tactic(m, p),
+                             mk_elim_uncnstr_tactic(m, p)),
+                    and_then(mk_elim_term_ite_tactic(m, p),
+                             mk_solve_eqs_tactic(m, p),
+                             mk_simplify_tactic(m, p),
+                             mk_nnf_tactic(m, p),
+                             mk_nl_purify_tactic(m, p)));
+}
+
+

src/tactic/smtlogics/qfufnra_tactic.h

@@ -0,0 +1,31 @@
+/*++
+Copyright (c) 2012 Microsoft Corporation
+
+Module Name:
+
+    qfufnra_tactic.h
+
+Abstract:
+
+    Tactic for QF_UFNRA
+
+Author:
+
+    Leonardo (leonardo) 2012-02-28
+
+Notes:
+
+--*/
+#ifndef _QFUFNRA_TACTIC_
+#define _QFUFNRA_TACTIC_
+
+#include"params.h"
+class ast_manager;
+class tactic;
+
+tactic * mk_qfufnra_tactic(ast_manager & m, params_ref const & p = params_ref());
+/*
+  ADD_TACTIC("qfufnra", "builtin strategy for solving QF_UNFRA problems.", "mk_qfufnra_tactic(m, p)")
+*/
+
+#endif