diff --git a/src/api/api_context.h b/src/api/api_context.h
index df0f488af..a126f0790 100644
--- a/src/api/api_context.h
+++ b/src/api/api_context.h
@@ -28,7 +28,7 @@ Revision History:
 #include"datatype_decl_plugin.h"
 #include"dl_decl_plugin.h"
 #include"smt_kernel.h"
-#include"front_end_params.h"
+#include"smt_params.h"
 #include"event_handler.h"
 #include"tactic_manager.h"
 #include"context_params.h"
@@ -53,7 +53,7 @@ namespace api {
         datalog::dl_decl_util      m_datalog_util;
 
         // Support for old solver API
-        front_end_params           m_fparams;
+        smt_params           m_fparams;
         smt::kernel *              m_solver;     // General purpose solver for backward compatibility
         // -------------------------------
 
@@ -172,7 +172,7 @@ namespace api {
         // Solver interface for backward compatibility 
         //
         // ------------------------
-        front_end_params & fparams() { return m_fparams; }
+        smt_params & fparams() { return m_fparams; }
         bool has_solver() const { return m_solver != 0; }
         smt::kernel & get_smt_kernel();
         void assert_cnstr(expr * a);
diff --git a/src/api/api_datalog.cpp b/src/api/api_datalog.cpp
index 4c54a4332..9b7093d1e 100644
--- a/src/api/api_datalog.cpp
+++ b/src/api/api_datalog.cpp
@@ -32,7 +32,7 @@ Revision History:
 
 namespace api {
     
-    fixedpoint_context::fixedpoint_context(ast_manager& m, front_end_params& p) : 
+    fixedpoint_context::fixedpoint_context(ast_manager& m, smt_params& p) : 
         m_state(0), 
         m_reduce_app(0), 
         m_reduce_assign(0), 
diff --git a/src/api/api_datalog.h b/src/api/api_datalog.h
index 97bedfc9b..1dc0a9cbd 100644
--- a/src/api/api_datalog.h
+++ b/src/api/api_datalog.h
@@ -21,7 +21,7 @@ Revision History:
 
 #include"z3.h"
 #include"ast.h"
-#include"front_end_params.h"
+#include"smt_params.h"
 #include"dl_external_relation.h"
 #include"dl_decl_plugin.h"
 #include"smt_kernel.h"
@@ -40,7 +40,7 @@ namespace api {
         datalog::context             m_context;    
         ast_ref_vector               m_trail;        
     public:
-        fixedpoint_context(ast_manager& m, front_end_params& p);
+        fixedpoint_context(ast_manager& m, smt_params& p);
         virtual ~fixedpoint_context() {}
         family_id get_family_id() const { return const_cast<datalog::context&>(m_context).get_decl_util().get_family_id(); }
         void set_state(void* state);
diff --git a/src/ast/proof_checker/proof_checker.cpp b/src/ast/proof_checker/proof_checker.cpp
index 8a064a315..bef0fea9c 100644
--- a/src/ast/proof_checker/proof_checker.cpp
+++ b/src/ast/proof_checker/proof_checker.cpp
@@ -4,7 +4,7 @@
 // include "spc_decl_plugin.h"
 #include "ast_smt_pp.h"
 #include "arith_decl_plugin.h"
-#include "front_end_params.h"
+#include "smt_params.h"
 #include "th_rewriter.h"
 #include "var_subst.h"
 
diff --git a/src/cmd_context/context_params.h b/src/cmd_context/context_params.h
index 556c3bd3f..0fe4da93e 100644
--- a/src/cmd_context/context_params.h
+++ b/src/cmd_context/context_params.h
@@ -36,7 +36,6 @@ public:
     bool        m_validate_model;
     bool        m_unsat_core;
     unsigned    m_timeout;
-    bool        m_statistics;
 
     context_params();
     void set(char const * param, char const * value);
diff --git a/src/front_end_params/front_end_params.cpp b/src/front_end_params/front_end_params.cpp
deleted file mode 100644
index 367c983c3..000000000
--- a/src/front_end_params/front_end_params.cpp
+++ /dev/null
@@ -1,51 +0,0 @@
-/*++
-Copyright (c) 2006 Microsoft Corporation
-
-Module Name:
-
-    front_end_params.cpp
-
-Abstract:
-
-    <abstract>
-
-Author:
-
-    Leonardo de Moura (leonardo) 2007-05-10.
-
-Revision History:
-
---*/
-#include"front_end_params.h"
-
-#if 0
-
-void front_end_params::register_params(ini_params & p) {
-    preprocessor_params::register_params(p);
-    smt_params::register_params(p);
-    arith_simplifier_params::register_params(p);
-    p.register_bool_param("at_labels_cex", m_at_labels_cex, 
-                          "only use labels that contain '@' when building multiple counterexamples");
-    p.register_bool_param("check_at_labels", m_check_at_labels, 
-                          "check that labels containing '@' are used correctly to only produce unique counter examples");
-    p.register_bool_param("type_check", m_well_sorted_check, "enable/disable type checker");
-    p.register_bool_param("well_sorted_check", m_well_sorted_check, "enable/disable type checker");
-    p.register_unsigned_param("soft_timeout", m_soft_timeout, "set approximate timeout for each solver query (milliseconds), the value 0 represents no timeout", true);
-    p.register_double_param("instruction_max", m_instr_out, "set the (approximate) maximal number of instructions per invocation of check", true);
-
-#ifdef _WINDOWS
-    // The non-windows memory manager does not have access to memory sizes.
-    p.register_unsigned_param("memory_high_watermark", m_memory_high_watermark, 
-                              "set high watermark for memory consumption (in megabytes)");
-    p.register_unsigned_param("memory_max_size", m_memory_max_size,
-                              "set hard upper limit for memory consumption (in megabytes)");
-#endif
-
-
-    PRIVATE_PARAMS({
-    });
-
-}
-
-#endif
-
diff --git a/src/front_end_params/front_end_params.h b/src/front_end_params/front_end_params.h
deleted file mode 100644
index 9bf5dd69c..000000000
--- a/src/front_end_params/front_end_params.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/*++
-Copyright (c) 2006 Microsoft Corporation
-
-Module Name:
-
-    front_end_params.h
-
-Abstract:
-
-    <abstract>
-
-Author:
-
-    Leonardo de Moura (leonardo) 2007-05-10.
-
-Revision History:
-
---*/
-#ifndef _FRONT_END_PARAMS_H_
-#define _FRONT_END_PARAMS_H_
-
-#include"ast.h"
-#include"smt_params.h"
-
-struct front_end_params : public smt_params {
-    bool                m_well_sorted_check;
-    unsigned            m_memory_high_watermark;
-    unsigned            m_memory_max_size;
-    proof_gen_mode      m_proof_mode;
-    bool                m_auto_config;
-
-    bool                m_debug_ref_count;
-
-    front_end_params():
-        m_well_sorted_check(true),
-        m_memory_high_watermark(0),
-        m_memory_max_size(0),
-        m_proof_mode(PGM_DISABLED),
-        m_auto_config(true),
-        m_debug_ref_count(false) {
-    }
-
-    bool has_auto_config(unsigned idx) { return m_auto_config; }
-
-private:
-
-    front_end_params& operator=(front_end_params const& other);
-};
-
-#endif /* _FRONT_END_PARAMS_H_ */
-
diff --git a/src/front_end_params/params2front_end_params.h b/src/front_end_params/params2front_end_params.h
deleted file mode 100644
index 936928d4a..000000000
--- a/src/front_end_params/params2front_end_params.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/*++
-Copyright (c) 2011 Microsoft Corporation
-
-Module Name:
-
-    params2front_end_params.h
-
-Abstract:
-
-    Backward compatibility utilities for parameter setting
-
-Author:
-
-    Leonardo de Moura (leonardo) 2011-05-19.
-
-Revision History:
-
---*/
-#ifndef _PARAMS2FRONT_END_PARAMS_H_
-#define _PARAMS2FRONT_END_PARAMS_H_
-
-class params_ref;
-struct front_end_params;
-
-void params2front_end_params(params_ref const & s, front_end_params & t);
-
-void front_end_params2params(front_end_params const & s, params_ref & t);
-
-void solver_front_end_params_descrs(param_descrs & r);
-
-#endif
diff --git a/src/front_end_params/params2front_end_params.cpp b/src/front_end_params/params2smt_params.cpp
similarity index 89%
rename from src/front_end_params/params2front_end_params.cpp
rename to src/front_end_params/params2smt_params.cpp
index 4c5866786..b01d9478a 100644
--- a/src/front_end_params/params2front_end_params.cpp
+++ b/src/front_end_params/params2smt_params.cpp
@@ -3,7 +3,7 @@ Copyright (c) 2011 Microsoft Corporation
 
 Module Name:
 
-    params2front_end_params.h
+    params2smt_params.h
 
 Abstract:
 
@@ -16,17 +16,17 @@ Author:
 Revision History:
 
 --*/
-#include"front_end_params.h"
+#include"smt_params.h"
 #include"params.h"
 
 /**
-   Update front_end_params using s.
+   Update smt_params using s.
    Only the most frequently used options are updated.
 
    This function is mainly used to allow smt::context to be used in
    the new strategy framework.
 */
-void params2front_end_params(params_ref const & s, front_end_params & t) {
+void params2smt_params(params_ref const & s, smt_params & t) {
     t.m_relevancy_lvl = s.get_uint("relevancy", t.m_relevancy_lvl);
     TRACE("qi_cost", s.display(tout); tout << "\n";);
     t.m_qi_cost = s.get_str("qi_cost", t.m_qi_cost.c_str());
@@ -36,7 +36,6 @@ void params2front_end_params(params_ref const & s, front_end_params & t) {
     t.m_model = s.get_bool("produce_models", t.m_model);
     if (s.get_bool("produce_proofs", false))
         t.m_proof_mode = PGM_FINE;
-    t.m_well_sorted_check = s.get_bool("check_sorts", t.m_well_sorted_check);
     t.m_qi_eager_threshold = s.get_double("qi_eager_threshold", t.m_qi_eager_threshold);
     t.m_qi_lazy_threshold =  s.get_double("qi_lazy_threshold", t.m_qi_lazy_threshold);
     t.m_preprocess = s.get_bool("preprocess", t.m_preprocess);
@@ -57,7 +56,7 @@ void params2front_end_params(params_ref const & s, front_end_params & t) {
    It also copies the model construction parameter. Thus, model construction
    can be enabled at the command line.
 */
-void front_end_params2params(front_end_params const & s, params_ref & t) {
+void smt_params2params(smt_params const & s, params_ref & t) {
     if (s.m_model)
         t.set_bool("produce_models", true);
     if (!s.m_hi_div0)
@@ -67,7 +66,7 @@ void front_end_params2params(front_end_params const & s, params_ref & t) {
 /**
    \brief Bridge for using params_ref with smt::context.
 */
-void solver_front_end_params_descrs(param_descrs & r) {
+void solver_smt_params_descrs(param_descrs & r) {
     r.insert("hi_div0", CPK_BOOL, "(default: true) if true, then Z3 uses the usual hardware interpretation for division (rem, mod) by zero. Otherwise, these operations are considered uninterpreted");
     r.insert("relevancy", CPK_UINT, "relevancy propagation heuristic: 0 - disabled, 1 - relevancy is tracked by only affects quantifier instantiation, 2 - relevancy is tracked, and an atom is only asserted if it is relevant");
     r.insert("mbqi", CPK_BOOL, "model based quantifier instantiation (MBQI)");
diff --git a/src/front_end_params/params2smt_params.h b/src/front_end_params/params2smt_params.h
new file mode 100644
index 000000000..d4f60cb64
--- /dev/null
+++ b/src/front_end_params/params2smt_params.h
@@ -0,0 +1,31 @@
+/*++
+Copyright (c) 2011 Microsoft Corporation
+
+Module Name:
+
+    params2smt_params.h
+
+Abstract:
+
+    Backward compatibility utilities for parameter setting
+
+Author:
+
+    Leonardo de Moura (leonardo) 2011-05-19.
+
+Revision History:
+
+--*/
+#ifndef _PARAMS2SMT_PARAMS_H_
+#define _PARAMS2SMT_PARAMS_H_
+
+class params_ref;
+struct smt_params;
+
+void params2smt_params(params_ref const & s, smt_params & t);
+
+void smt_params2params(smt_params const & s, params_ref & t);
+
+void solver_smt_params_descrs(param_descrs & r);
+
+#endif
diff --git a/src/front_end_params/smt_params.h b/src/front_end_params/smt_params.h
index 24479de16..68e5a596d 100644
--- a/src/front_end_params/smt_params.h
+++ b/src/front_end_params/smt_params.h
@@ -19,6 +19,7 @@ Revision History:
 #ifndef _SMT_PARAMS_H_
 #define _SMT_PARAMS_H_
 
+#include"ast.h"
 #include"dyn_ack_params.h"
 #include"qi_params.h"
 #include"theory_arith_params.h"
@@ -205,6 +206,24 @@ struct smt_params : public preprocessor_params,
     bool                m_at_labels_cex; // only use labels which contains the @ symbol when building multiple counterexamples.
     bool                m_check_at_labels; // check that @ labels are inserted to generate unique counter-examples.    
     bool                m_dump_goal_as_smt;
+    proof_gen_mode      m_proof_mode;
+    bool                m_auto_config;
+
+#if 0
+    unsigned            m_memory_high_watermark;
+    unsigned            m_memory_max_size;
+
+    bool                m_auto_config;
+
+    bool                m_debug_ref_count;
+    
+        m_well_sorted_check(true),
+        m_memory_high_watermark(0),
+        m_memory_max_size(0),
+
+        m_auto_config(true),
+        m_debug_ref_count(false) {
+#endif
 
     smt_params():
         m_display_proof(false),
@@ -272,7 +291,9 @@ struct smt_params : public preprocessor_params,
         m_soft_timeout(0),
         m_at_labels_cex(false),
         m_check_at_labels(false),
-        m_dump_goal_as_smt(false) {
+        m_dump_goal_as_smt(false),
+        m_proof_mode(PGM_DISABLED),
+        m_auto_config(true) {
     }
 };
 
diff --git a/src/muz_qe/dl_bmc_engine.h b/src/muz_qe/dl_bmc_engine.h
index 5de54f843..bd330fa22 100644
--- a/src/muz_qe/dl_bmc_engine.h
+++ b/src/muz_qe/dl_bmc_engine.h
@@ -32,7 +32,7 @@ namespace datalog {
     class bmc {
         context&         m_ctx;
         ast_manager&     m;
-        front_end_params m_fparams;
+        smt_params       m_fparams;
         smt::kernel      m_solver;
         obj_map<func_decl, sort*> m_pred2sort;
         obj_map<sort, func_decl*> m_sort2pred;
diff --git a/src/muz_qe/dl_cmds.cpp b/src/muz_qe/dl_cmds.cpp
index deb4dc7ec..f45165709 100644
--- a/src/muz_qe/dl_cmds.cpp
+++ b/src/muz_qe/dl_cmds.cpp
@@ -33,8 +33,8 @@ Notes:
 
 
 class dl_context {
-    // PARAM-TODO temp HACK: added m_params field because cmd_context does not have front_end_params anymore
-    front_end_params              m_params; 
+    // PARAM-TODO temp HACK: added m_params field because cmd_context does not have smt_params anymore
+    smt_params                    m_params; 
     cmd_context &                 m_cmd;
     dl_collected_cmds*            m_collected_cmds;
     unsigned                      m_ref_count;
diff --git a/src/muz_qe/dl_context.cpp b/src/muz_qe/dl_context.cpp
index 1e139813b..3b7ad6ffc 100644
--- a/src/muz_qe/dl_context.cpp
+++ b/src/muz_qe/dl_context.cpp
@@ -226,7 +226,7 @@ namespace datalog {
     //
     // -----------------------------------
 
-    context::context(ast_manager & m, front_end_params& fp, params_ref const& pa):
+    context::context(ast_manager & m, smt_params& fp, params_ref const& pa):
         m(m),
         m_fparams(fp),
         m_params(pa),
diff --git a/src/muz_qe/dl_context.h b/src/muz_qe/dl_context.h
index fe94dd3cc..9078bc693 100644
--- a/src/muz_qe/dl_context.h
+++ b/src/muz_qe/dl_context.h
@@ -24,7 +24,7 @@ Revision History:
 #undef max
 #endif
 #include"arith_decl_plugin.h"
-#include"front_end_params.h"
+#include"smt_params.h"
 #include"map.h"
 #include"th_rewriter.h"
 #include"str_hashtable.h"
@@ -78,7 +78,7 @@ namespace datalog {
         typedef vector<std::pair<func_decl*,relation_fact> > fact_vector;
 
         ast_manager &      m;
-        front_end_params&  m_fparams;
+        smt_params&  m_fparams;
         params_ref         m_params;
         dl_decl_util       m_decl_util;
         th_rewriter        m_rewriter;
@@ -122,7 +122,7 @@ namespace datalog {
 
 
     public:
-        context(ast_manager & m, front_end_params& params, params_ref const& p = params_ref());
+        context(ast_manager & m, smt_params& params, params_ref const& p = params_ref());
         ~context();
         void reset();
 
@@ -149,7 +149,7 @@ namespace datalog {
         relation_manager & get_rmanager() { return m_rmanager; }
         const relation_manager & get_rmanager() const { return m_rmanager; }
         rule_manager & get_rule_manager() { return m_rule_manager; }
-        front_end_params & get_fparams() const { return m_fparams; }
+        smt_params & get_fparams() const { return m_fparams; }
         params_ref const&  get_params() const { return m_params; }
         DL_ENGINE get_engine() { configure_engine(); return m_engine; }
         th_rewriter& get_rewriter() { return m_rewriter; }
diff --git a/src/muz_qe/dl_smt_relation.cpp b/src/muz_qe/dl_smt_relation.cpp
index 348c63e1c..ee465a7d8 100644
--- a/src/muz_qe/dl_smt_relation.cpp
+++ b/src/muz_qe/dl_smt_relation.cpp
@@ -129,7 +129,7 @@ namespace datalog {
         }
         IF_VERBOSE(10, verbose_stream() << "Checking emptiness...\n"; );
 
-        front_end_params& params = get_plugin().get_fparams();
+        smt_params& params = get_plugin().get_fparams();
         // [Leo]: asserted_formulas do not have support for der.
         //        We should use the tactics der.
         // flet<bool> flet2(params.m_der, true);
@@ -182,7 +182,7 @@ namespace datalog {
         expr_ref fml_free(m), fml_inst(m);
         fml_free = m.mk_and(facts, m.mk_not(get_relation()));
         instantiate(fml_free, fml_inst);
-        front_end_params& params = get_plugin().get_fparams();
+        smt_params& params = get_plugin().get_fparams();
         // [Leo]: asserted_formulas do not have support for qe nor der.
         //        We should use the tactics qe and der.
         //        BTW, qe at asserted_formulas was disabled when we moved to codeplex, but the field m_quant_elim was not deleted.
@@ -239,7 +239,7 @@ namespace datalog {
 
     void smt_relation::display_finite(std::ostream & out) const {
         ast_manager& m = get_manager();
-        front_end_params& params = get_plugin().get_fparams();
+        smt_params& params = get_plugin().get_fparams();
         expr* r = get_relation();
         expr_ref tmp(m);
         expr_ref_vector values(m), eqs(m);
@@ -524,7 +524,7 @@ namespace datalog {
 
                 expr_ref rInst(m), srcInst(m), tmp(m), tmp1(m);
                 expr_ref notR(m), srcGround(m);
-                front_end_params& fparams = get(r).get_plugin().get_fparams();
+                smt_params& fparams = get(r).get_plugin().get_fparams();
                 params_ref const& params = get(r).get_plugin().get_params();
                 
                 get(r).instantiate(get(r).get_relation(), rInst);
@@ -730,8 +730,8 @@ namespace datalog {
         return symbol(m_counter++);
     }
 
-    front_end_params& smt_relation_plugin::get_fparams() { 
-        return const_cast<front_end_params&>(get_manager().get_context().get_fparams()); 
+    smt_params& smt_relation_plugin::get_fparams() { 
+        return const_cast<smt_params&>(get_manager().get_context().get_fparams()); 
     }
 
     params_ref const& smt_relation_plugin::get_params() { 
diff --git a/src/muz_qe/dl_smt_relation.h b/src/muz_qe/dl_smt_relation.h
index 99de2ad83..a1bab918f 100644
--- a/src/muz_qe/dl_smt_relation.h
+++ b/src/muz_qe/dl_smt_relation.h
@@ -20,7 +20,7 @@ Revision History:
 #define _DL_SMT_RELATION_H_
 
 #include "dl_base.h"
-#include "front_end_params.h"
+#include "smt_params.h"
 #include "params.h"
 
 namespace datalog {
@@ -70,7 +70,7 @@ namespace datalog {
 
         symbol fresh_name(); 
 
-        front_end_params& get_fparams(); 
+        smt_params& get_fparams(); 
 
         params_ref const& get_params();
 
diff --git a/src/muz_qe/horn_tactic.cpp b/src/muz_qe/horn_tactic.cpp
index 8632f333b..1dec1b4fe 100644
--- a/src/muz_qe/horn_tactic.cpp
+++ b/src/muz_qe/horn_tactic.cpp
@@ -26,7 +26,7 @@ class horn_tactic : public tactic {
     struct imp {
         ast_manager&             m;
         datalog::context         m_ctx;
-        front_end_params         m_fparams;
+        smt_params               m_fparams;
 
         imp(ast_manager & m, params_ref const & p):
             m(m),
diff --git a/src/muz_qe/nlarith_util.cpp b/src/muz_qe/nlarith_util.cpp
index 039b57acf..5f8a24e99 100644
--- a/src/muz_qe/nlarith_util.cpp
+++ b/src/muz_qe/nlarith_util.cpp
@@ -72,7 +72,7 @@ namespace nlarith {
         bool       m_enable_linear;
         app_ref m_zero;
         app_ref m_one;
-        front_end_params m_params;
+        smt_params m_params;
         basic_simplifier_plugin m_bs;
         arith_simplifier_plugin m_rw;
         arith_rewriter m_rw1;
diff --git a/src/muz_qe/pdr_context.cpp b/src/muz_qe/pdr_context.cpp
index cb00dbeab..bb3d0f6be 100644
--- a/src/muz_qe/pdr_context.cpp
+++ b/src/muz_qe/pdr_context.cpp
@@ -1087,7 +1087,7 @@ namespace pdr {
     // context
 
     context::context(
-        front_end_params&     fparams,
+        smt_params&     fparams,
         params_ref const&     params,
         ast_manager&          m
         )
diff --git a/src/muz_qe/pdr_context.h b/src/muz_qe/pdr_context.h
index a201ac03b..77c3f48a9 100644
--- a/src/muz_qe/pdr_context.h
+++ b/src/muz_qe/pdr_context.h
@@ -285,7 +285,7 @@ namespace pdr {
             void reset() { memset(this, 0, sizeof(*this)); }
         };
         
-        front_end_params&    m_fparams;
+        smt_params&    m_fparams;
         params_ref const&    m_params;
         ast_manager&         m;
         datalog::context*    m_context;
@@ -343,13 +343,13 @@ namespace pdr {
            We check whether there is some reachable state of the relation checked_relation.
         */
         context(
-            front_end_params&  fparams,
+            smt_params&        fparams,
             params_ref const&  params,
             ast_manager&       m);
 
         ~context();
         
-        front_end_params& get_fparams() const { return m_fparams; }
+        smt_params&       get_fparams() const { return m_fparams; }
         params_ref const& get_params() const { return m_params; }
         ast_manager&      get_manager() const { return m; }
         manager&          get_pdr_manager() { return m_pm; }
diff --git a/src/muz_qe/pdr_farkas_learner.cpp b/src/muz_qe/pdr_farkas_learner.cpp
index 3206c64da..46de8f212 100644
--- a/src/muz_qe/pdr_farkas_learner.cpp
+++ b/src/muz_qe/pdr_farkas_learner.cpp
@@ -244,7 +244,7 @@ namespace pdr {
         }
     };
     
-    farkas_learner::farkas_learner(front_end_params& params, ast_manager& outer_mgr) 
+    farkas_learner::farkas_learner(smt_params& params, ast_manager& outer_mgr) 
         : m_proof_params(get_proof_params(params)), 
           m_pr(PROOF_MODE),
           p2o(m_pr, outer_mgr),
@@ -254,8 +254,8 @@ namespace pdr {
         m_ctx = alloc(smt::kernel, m_pr, m_proof_params);
     }
 
-    front_end_params farkas_learner::get_proof_params(front_end_params& orig_params) {
-        front_end_params res(orig_params);
+    smt_params farkas_learner::get_proof_params(smt_params& orig_params) {
+        smt_params res(orig_params);
         res.m_proof_mode = PROOF_MODE;
         res.m_arith_bound_prop = BP_NONE;
         // temp hack to fix the build
@@ -796,7 +796,7 @@ namespace pdr {
 
 
     void farkas_learner::test()  {
-        front_end_params params;
+        smt_params params;
         enable_trace("farkas_learner");
                
         bool res;
@@ -883,7 +883,7 @@ namespace pdr {
         end = p->get_benchmark()->end_formulas();
         B = m.mk_and(static_cast<unsigned>(end-it), it);
 
-        front_end_params params;
+        smt_params params;
         pdr::farkas_learner fl(params, m);
         expr_ref_vector lemmas(m);
         bool res = fl.get_lemma_guesses(A, B, lemmas);        
diff --git a/src/muz_qe/pdr_farkas_learner.h b/src/muz_qe/pdr_farkas_learner.h
index 56cb3640c..809f4cd7e 100644
--- a/src/muz_qe/pdr_farkas_learner.h
+++ b/src/muz_qe/pdr_farkas_learner.h
@@ -26,7 +26,7 @@ Revision History:
 #include "smt_kernel.h"
 #include "bool_rewriter.h"
 #include "pdr_util.h"
-#include "front_end_params.h"
+#include "smt_params.h"
 #include "tactic.h"
 
 namespace pdr {
@@ -39,12 +39,12 @@ class farkas_learner {
 
     typedef obj_hashtable<expr> expr_set;
 
-    front_end_params         m_proof_params;
+    smt_params               m_proof_params;
     ast_manager              m_pr;
     scoped_ptr<smt::kernel>  m_ctx;
 
 
-    static front_end_params get_proof_params(front_end_params& orig_params);
+    static smt_params get_proof_params(smt_params& orig_params);
 
     //
     // all ast objects passed to private functions have m_proof_mgs as their ast_manager
@@ -72,7 +72,7 @@ class farkas_learner {
     static void test();
 
 public:
-    farkas_learner(front_end_params& params, ast_manager& m);
+    farkas_learner(smt_params& params, ast_manager& m);
 
     /**
        All ast objects have the ast_manager which was passed as 
diff --git a/src/muz_qe/pdr_generalizers.cpp b/src/muz_qe/pdr_generalizers.cpp
index 3105485e0..31bb132c4 100644
--- a/src/muz_qe/pdr_generalizers.cpp
+++ b/src/muz_qe/pdr_generalizers.cpp
@@ -103,7 +103,7 @@ namespace pdr {
     //     weaken predecessor.
     //    
 
-    core_farkas_generalizer::core_farkas_generalizer(context& ctx, ast_manager& m, front_end_params& p):
+    core_farkas_generalizer::core_farkas_generalizer(context& ctx, ast_manager& m, smt_params& p):
         core_generalizer(ctx), 
         m_farkas_learner(p, m) 
     {}
diff --git a/src/muz_qe/pdr_generalizers.h b/src/muz_qe/pdr_generalizers.h
index 3b9851ca5..543e6d985 100644
--- a/src/muz_qe/pdr_generalizers.h
+++ b/src/muz_qe/pdr_generalizers.h
@@ -36,7 +36,7 @@ namespace pdr {
     class core_farkas_generalizer : public core_generalizer {
         farkas_learner m_farkas_learner;
     public:
-        core_farkas_generalizer(context& ctx, ast_manager& m, front_end_params& p);
+        core_farkas_generalizer(context& ctx, ast_manager& m, smt_params& p);
         virtual ~core_farkas_generalizer() {}
         virtual void operator()(model_node& n, expr_ref_vector& core, bool& uses_level);  
         virtual void collect_statistics(statistics& st) const;
diff --git a/src/muz_qe/pdr_interpolant_provider.cpp b/src/muz_qe/pdr_interpolant_provider.cpp
index bcea5cbc4..de1c62d79 100644
--- a/src/muz_qe/pdr_interpolant_provider.cpp
+++ b/src/muz_qe/pdr_interpolant_provider.cpp
@@ -306,7 +306,7 @@ lbool interpolant_provider_impl::get_interpolant(expr * f1, expr * f2, expr_ref&
         return l_undef;
     }
 
-    front_end_params dummy_params;
+    smt_params dummy_params;
     cmd_context cctx(&dummy_params, false, &m);
     for_each_expr(used_symbol_inserter(cctx), f1);
 
diff --git a/src/muz_qe/pdr_manager.cpp b/src/muz_qe/pdr_manager.cpp
index 9536d8f36..598d8c850 100644
--- a/src/muz_qe/pdr_manager.cpp
+++ b/src/muz_qe/pdr_manager.cpp
@@ -166,7 +166,7 @@ namespace pdr {
         return res;
     }
     
-    manager::manager(front_end_params& fparams, params_ref const& params, ast_manager& manager) :
+    manager::manager(smt_params& fparams, params_ref const& params, ast_manager& manager) :
         m(manager),
         m_fparams(fparams),
         m_params(params),
diff --git a/src/muz_qe/pdr_manager.h b/src/muz_qe/pdr_manager.h
index 85f2116e9..58b4ffc53 100644
--- a/src/muz_qe/pdr_manager.h
+++ b/src/muz_qe/pdr_manager.h
@@ -78,7 +78,7 @@ namespace pdr {
     class manager
     {
         ast_manager&      m;
-        front_end_params& m_fparams;
+        smt_params& m_fparams;
         params_ref const& m_params;
         
         mutable bool_rewriter m_brwr;
@@ -110,11 +110,11 @@ namespace pdr {
         void add_new_state(func_decl * s);
         
     public:
-        manager(front_end_params& fparams, params_ref const& params, 
+        manager(smt_params& fparams, params_ref const& params, 
                 ast_manager & manager);
         
         ast_manager& get_manager() const { return m; }
-        front_end_params& get_fparams() const { return m_fparams; }
+        smt_params& get_fparams() const { return m_fparams; }
         params_ref const& get_params() const { return m_params; }
         bool_rewriter& get_brwr() const { return m_brwr; }
 
diff --git a/src/muz_qe/pdr_prop_solver.cpp b/src/muz_qe/pdr_prop_solver.cpp
index 4fd036f48..5d0bd4e28 100644
--- a/src/muz_qe/pdr_prop_solver.cpp
+++ b/src/muz_qe/pdr_prop_solver.cpp
@@ -24,7 +24,7 @@ Revision History:
 #include "ast_smt2_pp.h"
 #include "dl_util.h"
 #include "model_pp.h"
-#include "front_end_params.h"
+#include "smt_params.h"
 #include "datatype_decl_plugin.h"
 #include "bv_decl_plugin.h"
 #include "pdr_farkas_learner.h"
diff --git a/src/muz_qe/pdr_prop_solver.h b/src/muz_qe/pdr_prop_solver.h
index fcbfbd536..165a37845 100644
--- a/src/muz_qe/pdr_prop_solver.h
+++ b/src/muz_qe/pdr_prop_solver.h
@@ -35,7 +35,7 @@ namespace pdr {
     class prop_solver {
     
     private:
-        front_end_params&   m_fparams;        
+        smt_params&         m_fparams;        
         ast_manager&        m;
         manager&            m_pm;
         symbol              m_name;
diff --git a/src/muz_qe/pdr_quantifiers.cpp b/src/muz_qe/pdr_quantifiers.cpp
index 7922b76c9..1cb4a5c95 100644
--- a/src/muz_qe/pdr_quantifiers.cpp
+++ b/src/muz_qe/pdr_quantifiers.cpp
@@ -206,7 +206,7 @@ namespace pdr {
         datalog::scoped_fine_proof _scp(m);
 
         expr_ref_vector fmls(m);
-        front_end_params fparams;
+        smt_params fparams;
         fparams.m_proof_mode = PGM_FINE;
         fparams.m_mbqi = true;
 
diff --git a/src/muz_qe/pdr_smt_context_manager.cpp b/src/muz_qe/pdr_smt_context_manager.cpp
index c9dcf7b4e..704967686 100644
--- a/src/muz_qe/pdr_smt_context_manager.cpp
+++ b/src/muz_qe/pdr_smt_context_manager.cpp
@@ -21,7 +21,7 @@ Revision History:
 #include "has_free_vars.h"
 #include "ast_pp.h"
 #include <sstream>
-#include "front_end_params.h"
+#include "smt_params.h"
 
 namespace pdr {
 
@@ -93,7 +93,7 @@ namespace pdr {
         return m_context.get_proof();
     }
 
-    smt_context_manager::smt_context_manager(front_end_params& fp, params_ref const& p, ast_manager& m):
+    smt_context_manager::smt_context_manager(smt_params& fp, params_ref const& p, ast_manager& m):
         m_fparams(fp), 
         m(m), 
         m_max_num_contexts(p.get_uint("max_num_contexts", 500)), 
diff --git a/src/muz_qe/pdr_smt_context_manager.h b/src/muz_qe/pdr_smt_context_manager.h
index 31fb8ccb3..342100ed0 100644
--- a/src/muz_qe/pdr_smt_context_manager.h
+++ b/src/muz_qe/pdr_smt_context_manager.h
@@ -88,7 +88,7 @@ namespace pdr {
     };
 
     class smt_context_manager {
-        front_end_params&        m_fparams;
+        smt_params&        m_fparams;
         ast_manager&             m;
         unsigned                 m_max_num_contexts;
         ptr_vector<smt::kernel>  m_contexts;
@@ -96,7 +96,7 @@ namespace pdr {
         app_ref_vector           m_predicate_list;
         func_decl_set            m_predicate_set;        
     public:
-        smt_context_manager(front_end_params& fp, params_ref const& p, ast_manager& m);
+        smt_context_manager(smt_params& fp, params_ref const& p, ast_manager& m);
         ~smt_context_manager();
         smt_context* mk_fresh();                
         void collect_statistics(statistics& st) const;
diff --git a/src/muz_qe/pdr_util.cpp b/src/muz_qe/pdr_util.cpp
index db11b5b20..934a038d2 100644
--- a/src/muz_qe/pdr_util.cpp
+++ b/src/muz_qe/pdr_util.cpp
@@ -30,7 +30,7 @@ Notes:
 #include "bool_rewriter.h"
 #include "dl_util.h"
 #include "for_each_expr.h"
-#include "front_end_params.h"
+#include "smt_params.h"
 #include "model.h"
 #include "model_v2_pp.h"
 #include "ref_vector.h"
diff --git a/src/muz_qe/qe.cpp b/src/muz_qe/qe.cpp
index 3b854b250..bb65f8bf8 100644
--- a/src/muz_qe/qe.cpp
+++ b/src/muz_qe/qe.cpp
@@ -1319,7 +1319,7 @@ namespace qe {
     
     public:
 
-        quant_elim_plugin(ast_manager& m, quant_elim& qe, front_end_params& p): 
+        quant_elim_plugin(ast_manager& m, quant_elim& qe, smt_params& p): 
             m(m),
             m_qe(qe),
             m_rewriter(m),
@@ -1959,7 +1959,7 @@ namespace qe {
 
     class quant_elim_new : public quant_elim {
         ast_manager&            m;
-        front_end_params&       m_fparams;  
+        smt_params&       m_fparams;  
         expr_ref                m_assumption;
         bool                    m_produce_models;
         ptr_vector<quant_elim_plugin> m_plugins;
@@ -1968,7 +1968,7 @@ namespace qe {
         bool                     m_eliminate_variables_as_block;
 
     public:
-        quant_elim_new(ast_manager& m, front_end_params& p) :
+        quant_elim_new(ast_manager& m, smt_params& p) :
             m(m),
             m_fparams(p),
             m_assumption(m),
@@ -2165,7 +2165,7 @@ namespace qe {
     // ------------------------------------------------
     // expr_quant_elim
 
-    expr_quant_elim::expr_quant_elim(ast_manager& m, front_end_params const& fp, params_ref const& p):
+    expr_quant_elim::expr_quant_elim(ast_manager& m, smt_params const& fp, params_ref const& p):
         m(m),
         m_fparams(fp),
         m_params(p),
@@ -2212,7 +2212,7 @@ namespace qe {
 
     void expr_quant_elim::init_qe() {
         if (!m_qe) {
-            m_qe = alloc(quant_elim_new, m, const_cast<front_end_params&>(m_fparams));
+            m_qe = alloc(quant_elim_new, m, const_cast<smt_params&>(m_fparams));
         }
     }
 
@@ -2399,7 +2399,7 @@ namespace qe {
         cache_result(q, r, pr); 
     }
 
-    expr_quant_elim_star1::expr_quant_elim_star1(ast_manager& m, front_end_params const& p): 
+    expr_quant_elim_star1::expr_quant_elim_star1(ast_manager& m, smt_params const& p): 
         simplifier(m), m_quant_elim(m, p), m_assumption(m.mk_true())
     {
     }
@@ -2437,7 +2437,7 @@ namespace qe {
     
     class simplify_solver_context : public i_solver_context {
         ast_manager&             m;
-        front_end_params         m_fparams;
+        smt_params         m_fparams;
         app_ref_vector*          m_vars;
         expr_ref*                m_fml;
         ptr_vector<contains_app> m_contains;
@@ -2612,7 +2612,7 @@ namespace qe {
     }
     
     void simplify_exists(app_ref_vector& vars, expr_ref& fml) {
-        front_end_params params;
+        smt_params params;
         ast_manager& m = fml.get_manager();
         simplify_solver_context ctx(m);
         ctx.solve(fml, vars);       
diff --git a/src/muz_qe/qe.h b/src/muz_qe/qe.h
index 4ca098f73..1697a5cbd 100644
--- a/src/muz_qe/qe.h
+++ b/src/muz_qe/qe.h
@@ -22,7 +22,7 @@ Revision History:
 #define __QE_H__
 
 #include "ast.h"
-#include "front_end_params.h"
+#include "smt_params.h"
 #include "statistics.h"
 #include "lbool.h"
 #include "expr_functors.h"
@@ -221,7 +221,7 @@ namespace qe {
 
     qe_solver_plugin* mk_array_plugin(i_solver_context& ctx);
 
-    qe_solver_plugin* mk_arith_plugin(i_solver_context& ctx, bool produce_models, front_end_params& p);
+    qe_solver_plugin* mk_arith_plugin(i_solver_context& ctx, bool produce_models, smt_params& p);
 
     class def_vector {
         func_decl_ref_vector m_vars;
@@ -275,7 +275,7 @@ namespace qe {
 
     class expr_quant_elim {
         ast_manager&            m;
-        front_end_params const& m_fparams;
+        smt_params const& m_fparams;
         params_ref              m_params;
         expr_ref_vector         m_trail;
         obj_map<expr,expr*>     m_visited;
@@ -283,7 +283,7 @@ namespace qe {
         expr*                   m_assumption;
         bool                    m_use_new_qe;
     public:
-        expr_quant_elim(ast_manager& m, front_end_params const& fp, params_ref const& p = params_ref());
+        expr_quant_elim(ast_manager& m, smt_params const& fp, params_ref const& p = params_ref());
         ~expr_quant_elim(); 
 
         void operator()(expr* assumption, expr* fml, expr_ref& result);
@@ -331,7 +331,7 @@ namespace qe {
         virtual void reduce1_quantifier(quantifier * q);
         virtual bool is_target(quantifier * q) const { return q->get_num_patterns() == 0 && q->get_num_no_patterns() == 0; }
     public:
-        expr_quant_elim_star1(ast_manager & m, front_end_params const& p);
+        expr_quant_elim_star1(ast_manager & m, smt_params const& p);
         virtual ~expr_quant_elim_star1() {}
 
         void collect_statistics(statistics & st) const {
diff --git a/src/muz_qe/qe_arith_plugin.cpp b/src/muz_qe/qe_arith_plugin.cpp
index 14cb5ee53..69c036639 100644
--- a/src/muz_qe/qe_arith_plugin.cpp
+++ b/src/muz_qe/qe_arith_plugin.cpp
@@ -98,7 +98,7 @@ namespace qe {
         bool_rewriter              m_bool_rewriter;
         arith_rewriter             m_arith_rewriter;
 
-        arith_qe_util(ast_manager& m, front_end_params& p, i_solver_context& ctx) : 
+        arith_qe_util(ast_manager& m, smt_params& p, i_solver_context& ctx) : 
             m(m), 
             m_ctx(ctx),
             m_arith(m),
@@ -1511,7 +1511,7 @@ public:
         subst_cache        m_subst;
 
     public:
-        arith_plugin(i_solver_context& ctx, ast_manager& m, front_end_params& p): 
+        arith_plugin(i_solver_context& ctx, ast_manager& m, smt_params& p): 
             qe_solver_plugin(m, m.get_family_id("arith"), ctx),
             m_util(m, p, ctx),
             m_trail(m)
@@ -2562,7 +2562,7 @@ public:
     };
 
 
-    qe_solver_plugin* mk_arith_plugin(i_solver_context& ctx, bool produce_models, front_end_params& p) {
+    qe_solver_plugin* mk_arith_plugin(i_solver_context& ctx, bool produce_models, smt_params& p) {
         if (p.m_nlquant_elim) {
             return alloc(nlarith_plugin, ctx, ctx.get_manager(), produce_models);
         }
diff --git a/src/muz_qe/qe_cmd.cpp b/src/muz_qe/qe_cmd.cpp
index ef8d1c058..6f001c9da 100644
--- a/src/muz_qe/qe_cmd.cpp
+++ b/src/muz_qe/qe_cmd.cpp
@@ -38,7 +38,7 @@ public:
     }
     
     virtual void execute(cmd_context & ctx) {
-        front_end_params par;
+        smt_params par;
         proof_ref pr(ctx.m());
         qe::expr_quant_elim_star1 qe(ctx.m(), par);
         expr_ref result(ctx.m());
diff --git a/src/muz_qe/qe_sat_tactic.cpp b/src/muz_qe/qe_sat_tactic.cpp
index 5f73e4a30..f33de6382 100644
--- a/src/muz_qe/qe_sat_tactic.cpp
+++ b/src/muz_qe/qe_sat_tactic.cpp
@@ -59,7 +59,7 @@ namespace qe {
         ast_manager&            m;
         expr_ref                m_false;
         volatile bool           m_cancel;
-        front_end_params        m_fparams;
+        smt_params              m_fparams;
         params_ref              m_params;
         unsigned                m_extrapolate_strategy_param;
         bool                    m_projection_mode_param;
diff --git a/src/muz_qe/qe_tactic.cpp b/src/muz_qe/qe_tactic.cpp
index 971d677ea..5b522e041 100644
--- a/src/muz_qe/qe_tactic.cpp
+++ b/src/muz_qe/qe_tactic.cpp
@@ -24,7 +24,7 @@ Revision History:
 class qe_tactic : public tactic {
     struct     imp {
         ast_manager &            m;
-        front_end_params         m_fparams;
+        smt_params               m_fparams;
         volatile bool            m_cancel;
         qe::expr_quant_elim      m_qe;
 
diff --git a/src/muz_qe/unit_subsumption_tactic.cpp b/src/muz_qe/unit_subsumption_tactic.cpp
index cd43e73e3..1fb71490d 100644
--- a/src/muz_qe/unit_subsumption_tactic.cpp
+++ b/src/muz_qe/unit_subsumption_tactic.cpp
@@ -21,7 +21,7 @@ Author:
 struct unit_subsumption_tactic : public tactic {
     ast_manager&    m;
     params_ref      m_params;
-    front_end_params m_fparams;
+    smt_params      m_fparams;
     volatile bool   m_cancel;
     smt::context    m_context;
     expr_ref_vector m_clauses;
diff --git a/src/muz_qe/vsubst_tactic.cpp b/src/muz_qe/vsubst_tactic.cpp
index 83e1c448b..b84202ee9 100644
--- a/src/muz_qe/vsubst_tactic.cpp
+++ b/src/muz_qe/vsubst_tactic.cpp
@@ -45,7 +45,7 @@ Notes:
 #include"arith_decl_plugin.h"
 #include"for_each_expr.h"
 #include"extension_model_converter.h"
-#include"params2front_end_params.h"
+#include"params2smt_params.h"
 #include"ast_smt2_pp.h"
 
 class vsubst_tactic : public tactic {
@@ -93,8 +93,8 @@ class vsubst_tactic : public tactic {
             throw tactic_exception("there are no real variables");
         }
 
-        front_end_params params;
-        params2front_end_params(p, params);
+        smt_params params;
+        params2smt_params(p, params);
         params.m_model = false;
         flet<bool> fl1(params.m_nlquant_elim, true);
         flet<bool> fl2(params.m_nl_arith_gb, false);
diff --git a/src/parsers/smt/smtparser.cpp b/src/parsers/smt/smtparser.cpp
index 53dffb28c..d3b2feeb7 100644
--- a/src/parsers/smt/smtparser.cpp
+++ b/src/parsers/smt/smtparser.cpp
@@ -37,7 +37,6 @@ Revision History:
 #include"var_subst.h"
 #include"well_sorted.h"
 #include"str_hashtable.h"
-#include"front_end_params.h"
 #include"stopwatch.h"
 
 class id_param_info {
diff --git a/src/shell/datalog_frontend.cpp b/src/shell/datalog_frontend.cpp
index 4bfe2a545..c4aab9111 100644
--- a/src/shell/datalog_frontend.cpp
+++ b/src/shell/datalog_frontend.cpp
@@ -25,7 +25,7 @@ Revision History:
 #undef min
 #undef max
 #endif
-#include"front_end_params.h"
+#include"smt_params.h"
 #include"datalog_parser.h"
 #include"arith_decl_plugin.h"
 #include"dl_compiler.h"
@@ -43,7 +43,7 @@ static datalog::context * g_ctx = 0;
 static datalog::rule_set * g_orig_rules;
 static datalog::instruction_block * g_code;
 static datalog::execution_context * g_ectx;
-static front_end_params * g_params;
+static smt_params * g_params;
 
 datalog_params::datalog_params():
     m_default_table("sparse"),
@@ -61,7 +61,7 @@ static void display_statistics(
     datalog::rule_set& orig_rules,
     datalog::instruction_block& code,
     datalog::execution_context& ex_ctx,
-    front_end_params& params,
+    smt_params& params,
     bool verbose
     ) 
 {
@@ -125,8 +125,10 @@ static void on_ctrl_c(int) {
 }
 
 
-unsigned read_datalog(char const * file, datalog_params const& dl_params, front_end_params & front_end_params) {
+unsigned read_datalog(char const * file) {
     IF_VERBOSE(1, verbose_stream() << "Z3 Datalog Engine\n";);
+    datalog_params dl_params;
+    smt_params     s_params;
     ast_manager m;
     g_overall_time.start();
     register_on_timeout_proc(on_timeout);
@@ -136,11 +138,7 @@ unsigned read_datalog(char const * file, datalog_params const& dl_params, front_
     params.set_sym("default_table", dl_params.m_default_table);
     params.set_bool("default_table_checked", dl_params.m_default_table_checked);
 
-    datalog::context ctx(m, front_end_params, params);
-    size_t watermark = front_end_params.m_memory_high_watermark;
-    if (watermark == 0) {
-        memory::set_high_watermark(static_cast<size_t>(UINT_MAX));
-    }
+    datalog::context ctx(m, s_params, params);
     datalog::relation_manager & rmgr = ctx.get_rmanager();
     datalog::relation_plugin & inner_plg = *rmgr.get_relation_plugin(symbol("tr_hashtable"));
     SASSERT(&inner_plg);
@@ -190,7 +188,7 @@ unsigned read_datalog(char const * file, datalog_params const& dl_params, front_
     g_orig_rules = &original_rules;
     g_code = &rules_code;
     g_ectx = &ex_ctx;
-    g_params = &front_end_params;
+    g_params = &s_params;
 
     try {    
         g_piece_timer.reset();
@@ -262,7 +260,7 @@ unsigned read_datalog(char const * file, datalog_params const& dl_params, front_
             original_rules, 
             rules_code,
             ex_ctx,
-            front_end_params,
+            s_params,
             false);
 
     }
@@ -274,7 +272,7 @@ unsigned read_datalog(char const * file, datalog_params const& dl_params, front_
             original_rules, 
             rules_code,
             ex_ctx,
-            front_end_params,
+            s_params,
             true);
         return ERR_MEMOUT;
     }
diff --git a/src/shell/datalog_frontend.h b/src/shell/datalog_frontend.h
index bf4194ef4..e53e35c89 100644
--- a/src/shell/datalog_frontend.h
+++ b/src/shell/datalog_frontend.h
@@ -25,7 +25,7 @@ struct datalog_params {
     datalog_params();
 };
 
-unsigned read_datalog(char const * file, datalog_params const& dl_params, front_end_params & front_end_params);
+unsigned read_datalog(char const * file);
 
 
 #endif /* _DATALOG_FRONTEND_H_ */
diff --git a/src/shell/main.cpp b/src/shell/main.cpp
index ecbaf8887..fb205c872 100644
--- a/src/shell/main.cpp
+++ b/src/shell/main.cpp
@@ -41,7 +41,6 @@ std::string         g_aux_input_file;
 char const *        g_input_file          = 0;
 bool                g_standard_input      = false;
 input_kind          g_input_kind          = IN_UNSPECIFIED;
-front_end_params *  g_front_end_params    = 0;
 bool                g_display_statistics  = false;
 bool                g_display_istatistics = false;
 
@@ -98,36 +97,7 @@ void display_usage() {
     std::cout << "  " << OPT << "dbg:tag    enable assertions tagged with <tag>.\n";
 #endif
 }
-
-class extra_params : public datalog_params {
-    bool &   m_statistics;
-public:
-    extra_params():
-        m_statistics(g_display_statistics) {
-    }
-
-    virtual ~extra_params() {}
-};
-
-extra_params*       g_extra_params = 0;
-bool                g_params_initialized = false;
-
-void init_params() {
-    if (!g_params_initialized) {
-        z3_bound_num_procs();
-        g_front_end_params = new front_end_params();
-        g_extra_params = new extra_params();
-        g_params_initialized = true;
-    }
-}
-
-void del_params() {
-    delete g_extra_params;
-    delete g_front_end_params;
-    g_extra_params = 0;
-    g_front_end_params = 0;
-}
-    
+   
 void parse_cmd_line_args(int argc, char ** argv) {
     int i = 1;
     char * eq_pos = 0;
@@ -200,18 +170,9 @@ void parse_cmd_line_args(int argc, char ** argv) {
                 long lvl = strtol(opt_arg, 0, 10);
                 set_verbosity_level(lvl);
             }
-            else if (strcmp(opt_name, "vldt") == 0) {
-                g_front_end_params->m_model_validate = true;
-            }
             else if (strcmp(opt_name, "file") == 0) {
                 g_input_file = opt_arg;
             }
-            else if (strcmp(opt_name, "r") == 0) {
-                if (!opt_arg) {
-                    error("optional argument (/r:level) is missing.");
-                }
-                g_front_end_params->m_relevancy_lvl = strtol(opt_arg, 0, 10);
-            }
             else if (strcmp(opt_name, "T") == 0) {
                 if (!opt_arg)
                     error("option argument (/T:timeout) is missing.");
@@ -221,8 +182,7 @@ void parse_cmd_line_args(int argc, char ** argv) {
             else if (strcmp(opt_name, "t") == 0) {
                 if (!opt_arg)
                     error("option argument (/t:timeout) is missing.");
-                long tm = strtol(opt_arg, 0, 10);
-                g_front_end_params->m_soft_timeout = tm*1000;
+                gparams::set("timeout", opt_arg);
             }
             else if (strcmp(opt_name, "nw") == 0) {
                 enable_warning_messages(false);
@@ -248,7 +208,7 @@ void parse_cmd_line_args(int argc, char ** argv) {
             else if (strcmp(opt_name, "memory") == 0) {
                 if (!opt_arg)
                     error("option argument (/memory:val) is missing.");
-                g_front_end_params->m_memory_high_watermark = strtoul(opt_arg, 0, 10);
+                gparams::set("memory_max_size", opt_arg);
             }
             else {
                 std::cerr << "Error: invalid command line option: " << arg << "\n";
@@ -288,27 +248,10 @@ char const * get_extension(char const * file_name) {
     }
 }
 
-class global_state_initialiser {
-public:
-    global_state_initialiser() {
-        memory::initialize(0);
-        init_params();
-    }
-
-    void reset() {
-        del_params();
-        memory::finalize();
-    }
-
-    ~global_state_initialiser() {
-        reset();
-    }
-};
-
 int main(int argc, char ** argv) {
     try{
         unsigned return_value = 0;
-        global_state_initialiser global_state;
+        memory::initialize(0);
         memory::exit_when_out_of_memory(true, "ERROR: out of memory");
         parse_cmd_line_args(argc, argv);
         env_params::updt_params();
@@ -353,7 +296,7 @@ int main(int argc, char ** argv) {
             return_value = read_dimacs(g_input_file);
             break;
         case IN_DATALOG:
-            read_datalog(g_input_file, *g_extra_params, *g_front_end_params);
+            read_datalog(g_input_file);
             break;
         case IN_Z3_LOG:
             replay_z3_log(g_input_file);
@@ -361,7 +304,6 @@ int main(int argc, char ** argv) {
         default:
             UNREACHABLE();
         }
-        global_state.reset();
 #ifdef _WINDOWS
         _CrtDumpMemoryLeaks();
 #endif
diff --git a/src/shell/smtlib_frontend.h b/src/shell/smtlib_frontend.h
index d83944119..2c5eed70c 100644
--- a/src/shell/smtlib_frontend.h
+++ b/src/shell/smtlib_frontend.h
@@ -19,8 +19,6 @@ Revision History:
 #ifndef _SMTLIB_FRONTEND_H_
 #define _SMTLIB_FRONTEND_H_
 
-#include"front_end_params.h"
-
 unsigned read_smtlib_file(char const * benchmark_file);
 unsigned read_smtlib2_commands(char const * command_file);
 
diff --git a/src/smt/asserted_formulas.cpp b/src/smt/asserted_formulas.cpp
index 513aa7634..6da2c15f5 100644
--- a/src/smt/asserted_formulas.cpp
+++ b/src/smt/asserted_formulas.cpp
@@ -40,7 +40,7 @@ Revision History:
 #include"distribute_forall.h"
 #include"quasi_macros.h"
 
-asserted_formulas::asserted_formulas(ast_manager & m, front_end_params & p):
+asserted_formulas::asserted_formulas(ast_manager & m, smt_params & p):
     m_manager(m),
     m_params(p),
     m_pre_simplifier(m),
diff --git a/src/smt/asserted_formulas.h b/src/smt/asserted_formulas.h
index 23be4ae7c..e888a974e 100644
--- a/src/smt/asserted_formulas.h
+++ b/src/smt/asserted_formulas.h
@@ -19,7 +19,7 @@ Revision History:
 #ifndef _ASSERTED_FORMULAS_H_
 #define _ASSERTED_FORMULAS_H_
 
-#include"front_end_params.h"
+#include"smt_params.h"
 #include"simplifier.h"
 #include"basic_simplifier_plugin.h"
 #include"static_features.h" 
@@ -36,7 +36,7 @@ class bv_simplifier_plugin;
 
 class asserted_formulas {
     ast_manager &                m_manager;
-    front_end_params &           m_params;
+    smt_params &                 m_params;
     simplifier                   m_pre_simplifier;
     simplifier                   m_simplifier;
     basic_simplifier_plugin *    m_bsimp;
@@ -100,7 +100,7 @@ class asserted_formulas {
     bool canceled() { return m_cancel_flag; }
 
 public:
-    asserted_formulas(ast_manager & m, front_end_params & p);
+    asserted_formulas(ast_manager & m, smt_params & p);
     ~asserted_formulas();
 
     void setup();
diff --git a/src/smt/expr_context_simplifier.cpp b/src/smt/expr_context_simplifier.cpp
index 8fd5b41bb..b23bb3bdc 100644
--- a/src/smt/expr_context_simplifier.cpp
+++ b/src/smt/expr_context_simplifier.cpp
@@ -310,7 +310,7 @@ bool expr_context_simplifier::is_false(expr* e) const {
 //  it occurs in the context (on the path) where it was inserted.
 // 
 
-expr_strong_context_simplifier::expr_strong_context_simplifier(front_end_params& p, ast_manager& m): 
+expr_strong_context_simplifier::expr_strong_context_simplifier(smt_params& p, ast_manager& m): 
     m_manager(m), m_params(p), m_arith(m), m_id(0), m_fn(0,m), m_solver(m, p) {
     sort* i_sort = m_arith.mk_int();
     m_fn = m.mk_func_decl(symbol(0xbeef101), i_sort, m.mk_bool_sort());
diff --git a/src/smt/expr_context_simplifier.h b/src/smt/expr_context_simplifier.h
index 6e13dcf43..2c1f32ddc 100644
--- a/src/smt/expr_context_simplifier.h
+++ b/src/smt/expr_context_simplifier.h
@@ -22,7 +22,7 @@ Revision History:
 #include "ast.h"
 #include "obj_hashtable.h"
 #include "basic_simplifier_plugin.h"
-#include "front_end_params.h"
+#include "smt_params.h"
 #include "smt_kernel.h"
 #include "arith_decl_plugin.h"
 
@@ -57,7 +57,7 @@ private:
 
 class expr_strong_context_simplifier {
     ast_manager& m_manager;
-    front_end_params & m_params;
+    smt_params & m_params;
     arith_util    m_arith;
     unsigned      m_id;
     func_decl_ref m_fn;
@@ -70,7 +70,7 @@ class expr_strong_context_simplifier {
     bool is_forced(expr* e, expr* v);
 
 public:
-    expr_strong_context_simplifier(front_end_params& p, ast_manager& m);
+    expr_strong_context_simplifier(smt_params& p, ast_manager& m);
     void operator()(expr* e, expr_ref& result) { simplify(e, result); }
     void operator()(expr_ref& result) { simplify(result.get(), result); }
     void push() { m_solver.push(); }
diff --git a/src/smt/smt_case_split_queue.cpp b/src/smt/smt_case_split_queue.cpp
index 808284224..7a03224cf 100644
--- a/src/smt/smt_case_split_queue.cpp
+++ b/src/smt/smt_case_split_queue.cpp
@@ -278,7 +278,7 @@ namespace smt {
         };
         typedef int_hashtable<int_hash, default_eq<int> > bool_var_set;
         context &         m_context;
-        front_end_params &m_params;  
+        smt_params &m_params;  
         ast_manager &     m_manager;
         ptr_vector<expr>  m_queue;
         unsigned          m_head;
@@ -287,7 +287,7 @@ namespace smt {
         unsigned          m_head2;
         svector<scope>    m_scopes;
     public:
-        rel_case_split_queue(context & ctx, front_end_params & p):
+        rel_case_split_queue(context & ctx, smt_params & p):
             m_context(ctx),
             m_params(p),
             m_manager(ctx.get_manager()),
@@ -465,14 +465,14 @@ namespace smt {
         typedef int_hashtable<int_hash, default_eq<int> > bool_var_set;
         context &         m_context;
         ast_manager &     m_manager;
-        front_end_params &m_params;  
+        smt_params &m_params;  
         ptr_vector<expr>  m_queue;
         unsigned          m_head;
         int               m_bs_num_bool_vars; //!< Number of boolean variable before starting to search.
         bool_var_act_queue m_delayed_queue;
         svector<scope>    m_scopes;
     public:
-        rel_act_case_split_queue(context & ctx, front_end_params & p):
+        rel_act_case_split_queue(context & ctx, smt_params & p):
             m_context(ctx),
             m_manager(ctx.get_manager()),
             m_params(p),
@@ -694,7 +694,7 @@ namespace smt {
 
         typedef int_hashtable<int_hash, default_eq<int> > bool_var_set;
         context &            m_context;
-        front_end_params &   m_params;  
+        smt_params &   m_params;  
         ast_manager &        m_manager;
         ptr_vector<expr>     m_queue;
         unsigned             m_head;
@@ -714,7 +714,7 @@ namespace smt {
 
 
     public:
-        rel_goal_case_split_queue(context & ctx, front_end_params & p):
+        rel_goal_case_split_queue(context & ctx, smt_params & p):
             m_context(ctx),
             m_params(p),
             m_manager(ctx.get_manager()),
@@ -1088,7 +1088,7 @@ namespace smt {
     };
    
 
-    case_split_queue * mk_case_split_queue(context & ctx, front_end_params & p) {
+    case_split_queue * mk_case_split_queue(context & ctx, smt_params & p) {
         if (p.m_relevancy_lvl < 2 && (p.m_case_split_strategy == CS_RELEVANCY || p.m_case_split_strategy == CS_RELEVANCY_ACTIVITY || 
                                       p.m_case_split_strategy == CS_RELEVANCY_GOAL)) {
             warning_msg("relevacy must be enabled to use option CASE_SPLIT=3, 4 or 5");
diff --git a/src/smt/smt_case_split_queue.h b/src/smt/smt_case_split_queue.h
index 106b97e38..d78739df1 100644
--- a/src/smt/smt_case_split_queue.h
+++ b/src/smt/smt_case_split_queue.h
@@ -48,7 +48,7 @@ namespace smt {
         virtual ~case_split_queue() {}
     };
 
-    case_split_queue * mk_case_split_queue(context & ctx, front_end_params & p);
+    case_split_queue * mk_case_split_queue(context & ctx, smt_params & p);
 };
 
 #endif /* _SMT_CASE_SPLIT_QUEUE_H_ */
diff --git a/src/smt/smt_conflict_resolution.cpp b/src/smt/smt_conflict_resolution.cpp
index 071275dd4..d34aa2ec8 100644
--- a/src/smt/smt_conflict_resolution.cpp
+++ b/src/smt/smt_conflict_resolution.cpp
@@ -32,7 +32,7 @@ namespace smt {
     conflict_resolution::conflict_resolution(ast_manager & m,
                                              context & ctx,
                                              dyn_ack_manager & dyn_ack_manager,
-                                             front_end_params const & params,
+                                             smt_params const & params,
                                              literal_vector const & assigned_literals,
                                              vector<watch_list> & watches
                                              ):
@@ -1419,7 +1419,7 @@ namespace smt {
     conflict_resolution * mk_conflict_resolution(ast_manager & m, 
                                                  context & ctx,
                                                  dyn_ack_manager & dack_manager,
-                                                 front_end_params const & params,
+                                                 smt_params const & params,
                                                  literal_vector const & assigned_literals,  
                                                  vector<watch_list> & watches) {
         return alloc(conflict_resolution, m, ctx, dack_manager, params, assigned_literals, watches);
diff --git a/src/smt/smt_conflict_resolution.h b/src/smt/smt_conflict_resolution.h
index 5287b4e26..a55b331dc 100644
--- a/src/smt/smt_conflict_resolution.h
+++ b/src/smt/smt_conflict_resolution.h
@@ -25,7 +25,7 @@ Revision History:
 #include"smt_enode.h"
 #include"dyn_ack.h"
 #include"obj_pair_hashtable.h"
-#include"front_end_params.h"
+#include"smt_params.h"
 #include"obj_pair_hashtable.h"
 #include"map.h"
 #include"watch_list.h"
@@ -46,7 +46,7 @@ namespace smt {
         typedef obj_pair_set<enode, enode> enode_pair_set;
 
         ast_manager &                  m_manager;
-        front_end_params const &       m_params;
+        smt_params const &       m_params;
         context &                      m_ctx;
         dyn_ack_manager &              m_dyn_ack_manager;
         literal_vector const &         m_assigned_literals;
@@ -204,7 +204,7 @@ namespace smt {
         conflict_resolution(ast_manager & m, 
                             context & ctx,
                             dyn_ack_manager & dack_manager,
-                            front_end_params const & params,
+                            smt_params const & params,
                             literal_vector const & assigned_literals,
                             vector<watch_list> & watches
                             );
@@ -266,7 +266,7 @@ namespace smt {
     conflict_resolution * mk_conflict_resolution(ast_manager & m, 
                                                  context & ctx,
                                                  dyn_ack_manager & dack_manager,
-                                                 front_end_params const & params,
+                                                 smt_params const & params,
                                                  literal_vector const & assigned_literals,  
                                                  vector<watch_list> & watches
                                                  );
diff --git a/src/smt/smt_context.cpp b/src/smt/smt_context.cpp
index 3fb8398b4..a7623832f 100644
--- a/src/smt/smt_context.cpp
+++ b/src/smt/smt_context.cpp
@@ -39,7 +39,7 @@ Revision History:
 
 namespace smt {
 
-    context::context(ast_manager & m, front_end_params & p, params_ref const & _p):
+    context::context(ast_manager & m, smt_params & p, params_ref const & _p):
         m_manager(m),
         m_fparams(p),
         m_params(_p),
@@ -102,7 +102,7 @@ namespace smt {
         flush();
     }
 
-    context * context::mk_fresh(symbol const * l, front_end_params * p) {
+    context * context::mk_fresh(symbol const * l, smt_params * p) {
         context * new_ctx = alloc(context, m_manager, p == 0 ? m_fparams : *p);
         new_ctx->set_logic(l == 0 ? m_setup.get_logic() : *l);
         // copy missing simplifier_plugins
diff --git a/src/smt/smt_context.h b/src/smt/smt_context.h
index 204a56827..7940b17be 100644
--- a/src/smt/smt_context.h
+++ b/src/smt/smt_context.h
@@ -71,7 +71,7 @@ namespace smt {
 
     protected:
         ast_manager &               m_manager;
-        front_end_params &          m_fparams;
+        smt_params &          m_fparams;
         params_ref                  m_params;
         setup                       m_setup;
         volatile bool               m_cancel_flag;
@@ -220,7 +220,7 @@ namespace smt {
             return m_asserted_formulas.get_simplifier();
         }
 
-        front_end_params & get_fparams() {
+        smt_params & get_fparams() {
             return m_fparams;
         }
 
@@ -1314,7 +1314,7 @@ namespace smt {
         void assert_expr_core(expr * e, proof * pr);
 
     public:
-        context(ast_manager & m, front_end_params & fp, params_ref const & p = params_ref());
+        context(ast_manager & m, smt_params & fp, params_ref const & p = params_ref());
 
         virtual ~context();
 
@@ -1325,7 +1325,7 @@ namespace smt {
            If l == 0, then the logic of this context is used in the new context.
            If p == 0, then this->m_params is used
         */
-        context * mk_fresh(symbol const * l = 0,  front_end_params * p = 0);
+        context * mk_fresh(symbol const * l = 0,  smt_params * p = 0);
 
         app * mk_eq_atom(expr * lhs, expr * rhs);
 
diff --git a/src/smt/smt_kernel.cpp b/src/smt/smt_kernel.cpp
index 9d87b1363..977f0ee4a 100644
--- a/src/smt/smt_kernel.cpp
+++ b/src/smt/smt_kernel.cpp
@@ -19,7 +19,7 @@ Revision History:
 #include"smt_kernel.h"
 #include"smt_context.h" 
 #include"ast_smt2_pp.h"
-#include"params2front_end_params.h"
+#include"params2smt_params.h"
 
 namespace smt {
 
@@ -27,12 +27,12 @@ namespace smt {
         smt::context m_kernel;
         params_ref   m_params;
         
-        imp(ast_manager & m, front_end_params & fp, params_ref const & p):
+        imp(ast_manager & m, smt_params & fp, params_ref const & p):
             m_kernel(m, fp, p),
             m_params(p) {
         }
 
-        front_end_params & fparams() {
+        smt_params & fparams() {
             return m_kernel.get_fparams();
         }
 
@@ -179,11 +179,11 @@ namespace smt {
         }
 
         void updt_params(params_ref const & p) {
-            params2front_end_params(p, fparams());
+            params2smt_params(p, fparams());
         }
     };
 
-    kernel::kernel(ast_manager & m, front_end_params & fp, params_ref const & p) {
+    kernel::kernel(ast_manager & m, smt_params & fp, params_ref const & p) {
         m_imp = alloc(imp, m, fp, p);
     }
 
@@ -237,7 +237,7 @@ namespace smt {
 
     void kernel::reset() {
         ast_manager & _m       = m();
-        front_end_params & fps = m_imp->fparams();
+        smt_params & fps = m_imp->fparams();
         params_ref ps          = m_imp->params();
         #pragma omp critical (smt_kernel)
         {
@@ -343,7 +343,7 @@ namespace smt {
     }
 
     void kernel::collect_param_descrs(param_descrs & d) {
-        solver_front_end_params_descrs(d);
+        solver_smt_params_descrs(d);
     }
 
     context & kernel::get_context() {
diff --git a/src/smt/smt_kernel.h b/src/smt/smt_kernel.h
index 4c381e113..37b044af1 100644
--- a/src/smt/smt_kernel.h
+++ b/src/smt/smt_kernel.h
@@ -34,7 +34,7 @@ Revision History:
 #include"statistics.h"
 #include"smt_failure.h"
 
-struct front_end_params;
+struct smt_params;
 class progress_callback;
 
 namespace smt {
@@ -46,7 +46,7 @@ namespace smt {
         struct imp;
         imp *  m_imp;
     public:
-        kernel(ast_manager & m, front_end_params & fp, params_ref const & p = params_ref());
+        kernel(ast_manager & m, smt_params & fp, params_ref const & p = params_ref());
 
         ~kernel();
 
diff --git a/src/smt/smt_model_checker.cpp b/src/smt/smt_model_checker.cpp
index 58921bb35..704c272ee 100644
--- a/src/smt/smt_model_checker.cpp
+++ b/src/smt/smt_model_checker.cpp
@@ -281,7 +281,7 @@ namespace smt {
 
     void model_checker::init_aux_context() {
         if (!m_fparams) {
-            m_fparams = alloc(front_end_params, m_context->get_fparams());
+            m_fparams = alloc(smt_params, m_context->get_fparams());
             m_fparams->m_relevancy_lvl = 0; // no relevancy since the model checking problems are quantifier free
         }
         if (!m_aux_context) {
diff --git a/src/smt/smt_model_checker.h b/src/smt/smt_model_checker.h
index fca576090..5af7859ce 100644
--- a/src/smt/smt_model_checker.h
+++ b/src/smt/smt_model_checker.h
@@ -24,7 +24,7 @@ Revision History:
 #include"ast.h"
 #include"obj_hashtable.h"
 #include"qi_params.h"
-#include"front_end_params.h"
+#include"smt_params.h"
 #include"region.h"
 
 class proto_model;
@@ -39,9 +39,9 @@ namespace smt {
     class model_checker {
         ast_manager &                               m_manager;
         qi_params const &                           m_params;
-        // copy of front_end_params for auxiliary context. 
+        // copy of smt_params for auxiliary context. 
         // the idea is to use a different configuration for the aux context (e.g., disable relevancy)
-        scoped_ptr<front_end_params>                m_fparams;
+        scoped_ptr<smt_params>                      m_fparams;
         quantifier_manager *                        m_qm;
         context *                                   m_context; // owner of the model checker
         obj_map<enode, app *> const *               m_root2value; // temp field to store mapping received in the check method.
diff --git a/src/smt/smt_quantifier.cpp b/src/smt/smt_quantifier.cpp
index 14e63b982..799dd3c49 100644
--- a/src/smt/smt_quantifier.cpp
+++ b/src/smt/smt_quantifier.cpp
@@ -33,7 +33,7 @@ namespace smt {
     struct quantifier_manager::imp {
         quantifier_manager &                   m_wrapper;
         context &                              m_context;
-        front_end_params &                     m_params;
+        smt_params &                           m_params;
         qi_queue                               m_qi_queue;
         obj_map<quantifier, quantifier_stat *> m_quantifier_stat;
         quantifier_stat_gen                    m_qstat_gen;
@@ -41,7 +41,7 @@ namespace smt {
         scoped_ptr<quantifier_manager_plugin>  m_plugin;
         unsigned                               m_num_instances;
         
-        imp(quantifier_manager & wrapper, context & ctx, front_end_params & p, quantifier_manager_plugin * plugin):
+        imp(quantifier_manager & wrapper, context & ctx, smt_params & p, quantifier_manager_plugin * plugin):
             m_wrapper(wrapper),
             m_context(ctx),
             m_params(p),
@@ -242,7 +242,7 @@ namespace smt {
 
     };
 
-    quantifier_manager::quantifier_manager(context & ctx, front_end_params & fp, params_ref const & p) {
+    quantifier_manager::quantifier_manager(context & ctx, smt_params & fp, params_ref const & p) {
         m_imp = alloc(imp, *this, ctx, fp, mk_default_plugin());
         m_imp->m_plugin->set_manager(*this);
     }
@@ -355,7 +355,7 @@ namespace smt {
         #pragma omp critical (quantifier_manager)
         {
             context & ctx        = m_imp->m_context;
-            front_end_params & p = m_imp->m_params;
+            smt_params & p = m_imp->m_params;
             quantifier_manager_plugin * plugin = m_imp->m_plugin->mk_fresh();
             dealloc(m_imp);
             m_imp = alloc(imp, *this, ctx, p, plugin);
@@ -395,7 +395,7 @@ namespace smt {
     // The default plugin uses E-matching, MBQI and quick-checker
     class default_qm_plugin : public quantifier_manager_plugin {
         quantifier_manager *        m_qm;
-        front_end_params *          m_fparams;
+        smt_params *                m_fparams;
         context *                   m_context;
         scoped_ptr<mam>             m_mam;
         scoped_ptr<mam>             m_lazy_mam;
diff --git a/src/smt/smt_quantifier.h b/src/smt/smt_quantifier.h
index 3873c9737..19113229c 100644
--- a/src/smt/smt_quantifier.h
+++ b/src/smt/smt_quantifier.h
@@ -25,7 +25,7 @@ Revision History:
 #include"smt_types.h"
 
 class proto_model;
-struct front_end_params;
+struct smt_params;
 
 namespace smt {
     class quantifier_manager_plugin;
@@ -35,7 +35,7 @@ namespace smt {
         struct imp;
         imp *                       m_imp;
     public:
-        quantifier_manager(context & ctx, front_end_params & fp, params_ref const & p);
+        quantifier_manager(context & ctx, smt_params & fp, params_ref const & p);
         ~quantifier_manager();
         
         context & get_context() const;
diff --git a/src/smt/smt_setup.cpp b/src/smt/smt_setup.cpp
index ac080ccaa..f088870a4 100644
--- a/src/smt/smt_setup.cpp
+++ b/src/smt/smt_setup.cpp
@@ -33,7 +33,7 @@ Revision History:
 
 namespace smt {
 
-    setup::setup(context & c, front_end_params & params):
+    setup::setup(context & c, smt_params & params):
         m_context(c),
         m_manager(c.get_manager()),
         m_params(params),
diff --git a/src/smt/smt_setup.h b/src/smt/smt_setup.h
index 5c017a498..e0188537e 100644
--- a/src/smt/smt_setup.h
+++ b/src/smt/smt_setup.h
@@ -20,7 +20,7 @@ Revision History:
 #define _SMT_SETUP_H_
 
 #include"ast.h"
-#include"front_end_params.h"
+#include"smt_params.h"
 
 struct static_features;
 namespace smt {
@@ -42,7 +42,7 @@ namespace smt {
     class setup {
         context &          m_context;
         ast_manager &      m_manager;
-        front_end_params & m_params;
+        smt_params & m_params;
         symbol             m_logic;
         bool               m_already_configured;
         void setup_auto_config();
@@ -96,7 +96,7 @@ namespace smt {
         void setup_i_arith();
         void setup_mi_arith();
     public:
-        setup(context & c, front_end_params & params);
+        setup(context & c, smt_params & params);
         void mark_already_configured() { m_already_configured = true; }
         bool already_configured() const { return m_already_configured; }
         bool set_logic(symbol logic) { 
diff --git a/src/smt/smt_solver.cpp b/src/smt/smt_solver.cpp
index 8807e1e2b..ad653a968 100644
--- a/src/smt/smt_solver.cpp
+++ b/src/smt/smt_solver.cpp
@@ -19,12 +19,12 @@ Notes:
 #include"solver_na2as.h"
 #include"smt_kernel.h"
 #include"reg_decl_plugins.h"
-#include"front_end_params.h"
+#include"smt_params.h"
 
 namespace smt {
 
     class solver : public solver_na2as {
-        front_end_params    m_params;
+        smt_params          m_params;
         smt::kernel *       m_context;
         progress_callback * m_callback;
     public:
diff --git a/src/smt/tactic/ctx_solver_simplify_tactic.cpp b/src/smt/tactic/ctx_solver_simplify_tactic.cpp
index e5b625661..25c41c2a2 100644
--- a/src/smt/tactic/ctx_solver_simplify_tactic.cpp
+++ b/src/smt/tactic/ctx_solver_simplify_tactic.cpp
@@ -19,7 +19,7 @@ Notes:
 
 #include"ctx_solver_simplify_tactic.h"
 #include"arith_decl_plugin.h"
-#include"front_end_params.h"
+#include"smt_params.h"
 #include"smt_kernel.h"
 #include"ast_pp.h"
 #include"mk_simplified_app.h"
@@ -28,7 +28,7 @@ Notes:
 class ctx_solver_simplify_tactic : public tactic {
     ast_manager&          m;
     params_ref            m_params;
-    front_end_params      m_front_p;
+    smt_params            m_front_p;
     smt::kernel           m_solver;
     arith_util            m_arith;
     mk_simplified_app     m_mk_app;
diff --git a/src/smt/tactic/smt_tactic.cpp b/src/smt/tactic/smt_tactic.cpp
index c75e0d56b..a8694363c 100644
--- a/src/smt/tactic/smt_tactic.cpp
+++ b/src/smt/tactic/smt_tactic.cpp
@@ -19,12 +19,12 @@ Notes:
 #include"tactic.h"
 #include"tactical.h"
 #include"smt_kernel.h"
-#include"front_end_params.h"
-#include"params2front_end_params.h"
+#include"smt_params.h"
+#include"params2smt_params.h"
 #include"rewriter_types.h"
 
 class smt_tactic : public tactic {
-    front_end_params             m_params;
+    smt_params             m_params;
     params_ref                   m_params_ref;
     statistics                   m_stats;
     std::string                  m_failure;
@@ -51,7 +51,7 @@ public:
         SASSERT(m_ctx == 0);
     }
 
-    front_end_params & fparams() {
+    smt_params & fparams() {
         return m_params;
     }
 
@@ -64,15 +64,15 @@ public:
         TRACE("smt_tactic", tout << this << "\nupdt_params: " << p << "\n";);
         updt_params_core(p);
         m_params_ref = p;
-        // PARAM-TODO update params2front_end_params p ---> m_params
-        params2front_end_params(m_params_ref, fparams());
+        // PARAM-TODO update params2smt_params p ---> m_params
+        params2smt_params(m_params_ref, fparams());
         SASSERT(p.get_bool("auto_config", fparams().m_auto_config) == fparams().m_auto_config);
     }
     
     virtual void collect_param_descrs(param_descrs & r) {
         r.insert("candidate_models", CPK_BOOL, "(default: false) create candidate models even when quantifier or theory reasoning is incomplete.");
         r.insert("fail_if_inconclusive", CPK_BOOL, "(default: true) fail if found unsat (sat) for under (over) approximated goal.");
-        solver_front_end_params_descrs(r);
+        solver_smt_params_descrs(r);
     }
     
     virtual void set_cancel(bool f) {
diff --git a/src/smt/theory_diff_logic.h b/src/smt/theory_diff_logic.h
index 80d729001..264ab9b2d 100644
--- a/src/smt/theory_diff_logic.h
+++ b/src/smt/theory_diff_logic.h
@@ -32,7 +32,7 @@ Revision History:
 #include"arith_decl_plugin.h"
 #include"smt_justification.h"
 #include"map.h"
-#include"front_end_params.h"
+#include"smt_params.h"
 #include"arith_eq_adapter.h"
 #include"smt_model_generator.h"
 #include"numeral_factory.h"
@@ -251,7 +251,7 @@ namespace smt {
             }
         };
 
-        front_end_params &             m_params;
+        smt_params &             m_params;
         arith_util                     m_util;
         arith_eq_adapter               m_arith_eq_adapter;
         theory_diff_logic_statistics   m_stats;
@@ -305,7 +305,7 @@ namespace smt {
         void del_clause_eh(clause* cls);
 
     public:    
-        theory_diff_logic(ast_manager& m, front_end_params & params):
+        theory_diff_logic(ast_manager& m, smt_params & params):
             theory(m.get_family_id("arith")),
             m_params(params),
             m_util(m),
diff --git a/src/smt/theory_instgen.cpp b/src/smt/theory_instgen.cpp
index f631fd04c..68e04aab0 100644
--- a/src/smt/theory_instgen.cpp
+++ b/src/smt/theory_instgen.cpp
@@ -230,12 +230,12 @@ namespace smt {
     class clause_subsumption {
         ast_manager& m;
         grounder     m_grounder;
-        front_end_params m_params;
+        smt_params m_params;
         context      m_ctx;
         quantifier_ref_vector m_assumptions;
         unsigned_vector m_limit;
     public:
-        clause_subsumption(ast_manager& m, front_end_params& p): 
+        clause_subsumption(ast_manager& m, smt_params& p): 
             m(m), m_grounder(m), m_params(p), m_ctx(m,m_params), m_assumptions(m) {
                 m_params.m_instgen = false;
         }
@@ -1131,7 +1131,7 @@ namespace smt {
         };
 
         ast_manager&           m_manager;
-        front_end_params&      m_params;
+        smt_params&      m_params;
         fo_clause_internalizer m_internalizer;
         instantiator           m_instantiator;
         clause_subsumption     m_subsumer;
@@ -1184,7 +1184,7 @@ namespace smt {
 
 
     public:
-        theory_instgen_impl(ast_manager& m, front_end_params& p):            
+        theory_instgen_impl(ast_manager& m, smt_params& p):            
             theory_instgen(m.get_family_id("inst_gen")),
             m_manager(m),
             m_params(p),
@@ -1277,7 +1277,7 @@ namespace smt {
 
     };
 
-    theory_instgen* mk_theory_instgen(ast_manager& m, front_end_params& p) { 
+    theory_instgen* mk_theory_instgen(ast_manager& m, smt_params& p) { 
         return alloc(theory_instgen_impl, m, p); 
     }
 
diff --git a/src/smt/theory_instgen.h b/src/smt/theory_instgen.h
index 076dad748..c32636e9b 100644
--- a/src/smt/theory_instgen.h
+++ b/src/smt/theory_instgen.h
@@ -25,7 +25,7 @@ Revision History:
 #define _THEORY_INST_GEN_H_
 
 #include "smt_theory.h"
-#include "front_end_params.h"
+#include "smt_params.h"
 
 namespace smt {
 
@@ -37,7 +37,7 @@ namespace smt {
         virtual char const * get_name() const { return "instgen"; }
     };
 
-    theory_instgen* mk_theory_instgen(ast_manager& m, front_end_params& p);
+    theory_instgen* mk_theory_instgen(ast_manager& m, smt_params& p);
 
 };
 
diff --git a/src/smt/user_plugin/user_smt_theory.cpp b/src/smt/user_plugin/user_smt_theory.cpp
index d95346469..ab4cc62c4 100644
--- a/src/smt/user_plugin/user_smt_theory.cpp
+++ b/src/smt/user_plugin/user_smt_theory.cpp
@@ -44,7 +44,7 @@ namespace smt {
         {}
     };
 
-    user_theory::user_theory(ast_manager & m, front_end_params const& p, void * ext_context, void * ext_data, char const * name, family_id fid, user_decl_plugin * dp, user_simplifier_plugin * sp):
+    user_theory::user_theory(ast_manager & m, smt_params const& p, void * ext_context, void * ext_data, char const * name, family_id fid, user_decl_plugin * dp, user_simplifier_plugin * sp):
         theory(fid),
         m_params(p),
         m_ext_context(ext_context),
diff --git a/src/smt/user_plugin/user_smt_theory.h b/src/smt/user_plugin/user_smt_theory.h
index 3dd664738..56851b768 100644
--- a/src/smt/user_plugin/user_smt_theory.h
+++ b/src/smt/user_plugin/user_smt_theory.h
@@ -43,7 +43,7 @@ namespace smt {
         typedef union_find<user_theory>  th_union_find;
         typedef std::pair<theory_var, theory_var> var_pair;
 
-        front_end_params const&   m_params;
+        smt_params const&   m_params;
         void *                    m_ext_context;
         void *                    m_ext_data; 
         std::string               m_name;
@@ -134,7 +134,7 @@ namespace smt {
         void assert_axiom_core(app* axiom);
 
     public:
-        user_theory(ast_manager & m, front_end_params const& p, void * ext_context, void * ext_data, char const * name, family_id fid, user_decl_plugin * dp, user_simplifier_plugin * sp);
+        user_theory(ast_manager & m, smt_params const& p, void * ext_context, void * ext_data, char const * name, family_id fid, user_decl_plugin * dp, user_simplifier_plugin * sp);
         virtual ~user_theory();
 
         virtual theory * mk_fresh(context * new_ctx);
diff --git a/src/solver/solver.h b/src/solver/solver.h
index f26a5c5f4..5cd3da52b 100644
--- a/src/solver/solver.h
+++ b/src/solver/solver.h
@@ -23,8 +23,6 @@ Notes:
 #include"progress_callback.h"
 #include"params.h"
 
-struct front_end_params;
-
 /**
    \brief Abstract interface for making solvers available in the Z3
    API and front-ends such as SMT 2.0 and (legacy) SMT 1.0.
diff --git a/src/tactic/tactic.h b/src/tactic/tactic.h
index 015b5fe0a..80de1bcd0 100644
--- a/src/tactic/tactic.h
+++ b/src/tactic/tactic.h
@@ -29,7 +29,6 @@ Notes:
 #include"tactic_exception.h"
 #include"lbool.h"
 
-struct front_end_params;
 class progress_callback;
 
 typedef ptr_buffer<goal> goal_buffer;
diff --git a/src/test/arith_simplifier_plugin.cpp b/src/test/arith_simplifier_plugin.cpp
index 0ea1c2675..59f4996ce 100644
--- a/src/test/arith_simplifier_plugin.cpp
+++ b/src/test/arith_simplifier_plugin.cpp
@@ -1,5 +1,5 @@
 #include "arith_eq_solver.h"
-#include "front_end_params.h"
+#include "smt_params.h"
 
 typedef rational numeral;
 typedef vector<numeral> row;
@@ -24,7 +24,7 @@ static void test_solve_integer_equations(
 }
                
 void tst_arith_simplifier_plugin() {
-    front_end_params params;
+    smt_params params;
     ast_manager m;
     arith_eq_solver asimp(m);
     
diff --git a/src/test/check_assumptions.cpp b/src/test/check_assumptions.cpp
index e6a5433e9..872af714c 100644
--- a/src/test/check_assumptions.cpp
+++ b/src/test/check_assumptions.cpp
@@ -1,5 +1,5 @@
 #include "memory_manager.h"
-#include "front_end_params.h"
+#include "smt_params.h"
 #include "ast.h"
 #include "arith_decl_plugin.h"
 #include "bv_decl_plugin.h"
@@ -9,7 +9,7 @@
 void tst_check_assumptions()
 {
     memory::initialize(0);
-    front_end_params params;
+    smt_params params;
     ast_manager mgr;
     reg_decl_plugins(mgr);
 
diff --git a/src/test/datalog_parser.cpp b/src/test/datalog_parser.cpp
index 2d8a04225..64ee4201e 100644
--- a/src/test/datalog_parser.cpp
+++ b/src/test/datalog_parser.cpp
@@ -2,7 +2,7 @@
 #include "ast_pp.h"
 #include "arith_decl_plugin.h"
 #include "dl_context.h"
-#include "front_end_params.h"
+#include "smt_params.h"
 #include "reg_decl_plugins.h"
 
 using namespace datalog;
@@ -10,7 +10,7 @@ using namespace datalog;
 
 static void dparse_string(char const* str) {
     ast_manager m;
-    front_end_params params;
+    smt_params params;
     reg_decl_plugins(m);
 
     context ctx(m, params);
@@ -37,7 +37,7 @@ static void dparse_string(char const* str) {
 
 static void dparse_file(char const* file) {
     ast_manager m;
-    front_end_params params;
+    smt_params params;
     reg_decl_plugins(m);
 
     context ctx(m, params);
diff --git a/src/test/dl_context.cpp b/src/test/dl_context.cpp
index b2530b9da..c004c531f 100644
--- a/src/test/dl_context.cpp
+++ b/src/test/dl_context.cpp
@@ -2,7 +2,7 @@
 #include "ast_pp.h"
 #include "arith_decl_plugin.h"
 #include "dl_context.h"
-#include "front_end_params.h"
+#include "smt_params.h"
 
 using namespace datalog;
 
@@ -27,7 +27,7 @@ static void dl_context_simple_query_test(params_ref & params) {
     ast_manager m;
     dl_decl_util decl_util(m);
 
-    front_end_params fparams;
+    smt_params fparams;
     context ctx(m, fparams);
     ctx.updt_params(params);
 
@@ -49,7 +49,7 @@ static void dl_context_simple_query_test(params_ref & params) {
 void dl_context_saturate_file(params_ref & params, const char * f) {
     ast_manager m;
     dl_decl_util decl_util(m);
-    front_end_params fparams;
+    smt_params fparams;
     context ctx(m, fparams);
     ctx.updt_params(params);
 
diff --git a/src/test/dl_product_relation.cpp b/src/test/dl_product_relation.cpp
index ac895dacf..4b67b32af 100644
--- a/src/test/dl_product_relation.cpp
+++ b/src/test/dl_product_relation.cpp
@@ -19,7 +19,7 @@ namespace datalog {
     };
 
 
-    void test_functional_columns(front_end_params fparams, params_ref& params) {
+    void test_functional_columns(smt_params fparams, params_ref& params) {
         ast_manager m;
         context ctx(m, fparams);
         ctx.updt_params(params);
@@ -121,7 +121,7 @@ namespace datalog {
         }
     }
 
-    void test_finite_product_relation(front_end_params fparams, params_ref& params) {
+    void test_finite_product_relation(smt_params fparams, params_ref& params) {
         ast_manager m;
         context ctx(m, fparams);
         ctx.updt_params(params);
@@ -338,7 +338,7 @@ namespace datalog {
 using namespace datalog;
 
 void tst_dl_product_relation() {
-    front_end_params fparams;
+    smt_params fparams;
     params_ref params;
 
     test_functional_columns(fparams, params);
diff --git a/src/test/dl_query.cpp b/src/test/dl_query.cpp
index 2cca7cce6..712ae386a 100644
--- a/src/test/dl_query.cpp
+++ b/src/test/dl_query.cpp
@@ -2,7 +2,7 @@
 #include "ast_pp.h"
 #include "dl_table_relation.h"
 #include "dl_context.h"
-#include "front_end_params.h"
+#include "smt_params.h"
 #include "stopwatch.h"
 #include "reg_decl_plugins.h"
 
@@ -43,7 +43,7 @@ void dl_query_ask_for_last_arg(context & ctx, func_decl * pred, relation_fact &
     }
 }
 
-void dl_query_test(ast_manager & m, front_end_params & fparams, params_ref& params,
+void dl_query_test(ast_manager & m, smt_params & fparams, params_ref& params,
         context & ctx_b, char const* problem_file, unsigned test_count,
         bool use_magic_sets) {
 
@@ -124,7 +124,7 @@ void dl_query_test(ast_manager & m, front_end_params & fparams, params_ref& para
     }
 }
 
-void dl_query_test_wpa(front_end_params & fparams, params_ref& params) {
+void dl_query_test_wpa(smt_params & fparams, params_ref& params) {
     params.set_bool(":magic-sets-for-queries", true);
     ast_manager m;
     reg_decl_plugins(m);
@@ -183,7 +183,7 @@ void dl_query_test_wpa(front_end_params & fparams, params_ref& params) {
 }
 
 void tst_dl_query() {
-    front_end_params fparams;
+    smt_params fparams;
     params_ref params;
     params.set_sym(":default-table", symbol("sparse"));
     params.set_sym(":default-relation", symbol("tr_sparse"));
diff --git a/src/test/dl_relation.cpp b/src/test/dl_relation.cpp
index 095751cb6..fe8ba1730 100644
--- a/src/test/dl_relation.cpp
+++ b/src/test/dl_relation.cpp
@@ -8,7 +8,7 @@
 namespace datalog {
 
     static void test_interval_relation() {
-        front_end_params params;
+        smt_params params;
         ast_manager ast_m;
         context ctx(ast_m, params);    
         arith_util autil(ast_m);
@@ -111,7 +111,7 @@ namespace datalog {
 
         std::cout << "bound relation\n";
 
-        front_end_params params;
+        smt_params params;
         ast_manager ast_m;
         context ctx(ast_m, params);    
         arith_util autil(ast_m);
diff --git a/src/test/dl_smt_relation.cpp b/src/test/dl_smt_relation.cpp
index fa66a89c9..bae1784b0 100644
--- a/src/test/dl_smt_relation.cpp
+++ b/src/test/dl_smt_relation.cpp
@@ -14,7 +14,7 @@ namespace datalog {
         arith_util a(m);
         sort* int_sort = a.mk_int();
         sort* real_sort = a.mk_real();
-        front_end_params params;
+        smt_params params;
         context ctx(m, params);    
         relation_manager & rm = ctx.get_rmanager();
         relation_signature sig1;
diff --git a/src/test/dl_table.cpp b/src/test/dl_table.cpp
index a29ef48d8..6383dc1ab 100644
--- a/src/test/dl_table.cpp
+++ b/src/test/dl_table.cpp
@@ -24,7 +24,7 @@ static void test_table(mk_table_fn mk_table) {
     sig.push_back(4);
     sig.push_back(8);
     sig.push_back(4);
-    front_end_params params;
+    smt_params params;
     ast_manager ast_m;
     datalog::context ctx(ast_m, params);    
     datalog::relation_manager & m = ctx.get_rmanager();
diff --git a/src/test/model_retrieval.cpp b/src/test/model_retrieval.cpp
index 0a0b8a0dc..da6c3ddd0 100644
--- a/src/test/model_retrieval.cpp
+++ b/src/test/model_retrieval.cpp
@@ -1,6 +1,6 @@
 
 #include "ast.h"
-#include "front_end_params.h"
+#include "smt_params.h"
 #include "smt_context.h"
 #include "arith_decl_plugin.h"
 #include "bv_decl_plugin.h"
@@ -11,7 +11,7 @@
 void tst_model_retrieval()
 {          
     memory::initialize(0);
-    front_end_params params;
+    smt_params params;
     params.m_model = true;
 
 
diff --git a/src/test/quant_elim.cpp b/src/test/quant_elim.cpp
index 0f1ddfabd..4e750c34e 100644
--- a/src/test/quant_elim.cpp
+++ b/src/test/quant_elim.cpp
@@ -1,5 +1,5 @@
 #include "ast.h"
-#include "front_end_params.h"
+#include "smt_params.h"
 #include "simplifier.h"
 #include "qe.h"
 #include "basic_simplifier_plugin.h"
@@ -33,7 +33,7 @@ static void test_qe(ast_manager& m, lbool expected_outcome, expr* fml, char cons
     // enable_trace("bv_bit_prop");
 
     simplifier simp(m);
-    front_end_params params;
+    smt_params params;
     // params.m_quant_elim = true;
 
     std::cout << mk_pp(fml, m) << "\n";
diff --git a/src/test/quant_solve.cpp b/src/test/quant_solve.cpp
index bae63f129..36b354b44 100644
--- a/src/test/quant_solve.cpp
+++ b/src/test/quant_solve.cpp
@@ -1,5 +1,5 @@
 #include "ast.h"
-#include "front_end_params.h"
+#include "smt_params.h"
 #include "qe.h"
 #include "arith_decl_plugin.h"
 #include "ast_pp.h"
@@ -28,7 +28,7 @@ static void validate_quant_solution(ast_manager& m, expr* fml, expr* guard, qe::
     (*rep)(fml1);
     expr_ref tmp(m);
     tmp = m.mk_not(m.mk_implies(guard, fml1));
-    front_end_params fp;
+    smt_params fp;
     smt::kernel solver(m, fp);
     solver.assert_expr(tmp);
     lbool res = solver.check();
@@ -63,7 +63,7 @@ static void validate_quant_solutions(app* x, expr* fml, expr_ref_vector& guards)
     std::cout << mk_pp(fml2, m) << "\n";
     tmp = m.mk_not(m.mk_iff(fml2, tmp));
     std::cout << mk_pp(tmp, m) << "\n";
-    front_end_params fp;
+    smt_params fp;
     smt::kernel solver(m, fp);
     solver.assert_expr(tmp);
     lbool res = solver.check();
@@ -78,7 +78,7 @@ static void validate_quant_solutions(app* x, expr* fml, expr_ref_vector& guards)
 
 
 static void test_quant_solver(ast_manager& m, unsigned sz, app*const* xs, expr* fml, bool validate) {
-    front_end_params params;
+    smt_params params;
     qe::expr_quant_elim qe(m, params);
     qe::guarded_defs defs(m);
     bool success = qe.solve_for_vars(sz, xs, fml, defs);
@@ -98,8 +98,7 @@ static void test_quant_solver(ast_manager& m, unsigned sz, app*const* xs, expr*
 
 static expr_ref parse_fml(ast_manager& m, char const* str) {
     expr_ref result(m);
-    front_end_params fp;
-    cmd_context ctx(&fp, false, &m);
+    cmd_context ctx(false, &m);
     ctx.set_ignore_check(true);
     std::ostringstream buffer;
     buffer << "(declare-const x Int)\n"
diff --git a/src/test/smt_context.cpp b/src/test/smt_context.cpp
index 853bde068..49ada8ebd 100644
--- a/src/test/smt_context.cpp
+++ b/src/test/smt_context.cpp
@@ -3,7 +3,7 @@
 
 void tst_smt_context()
 {
-    front_end_params params;
+    smt_params params;
 
     ast_manager m;
     reg_decl_plugins(m);
diff --git a/src/test/substitution.cpp b/src/test/substitution.cpp
index 38f85bb11..889666972 100644
--- a/src/test/substitution.cpp
+++ b/src/test/substitution.cpp
@@ -1,5 +1,5 @@
 #include "expr_substitution.h"
-#include "front_end_params.h"
+#include "smt_params.h"
 #include "substitution.h"
 #include "unifier.h"
 #include "bv_decl_plugin.h"
@@ -10,7 +10,7 @@
 void tst_substitution()
 {
     memory::initialize(0);
-    front_end_params params;
+    smt_params params;
     params.m_model = true;
 
     enable_trace("subst_bug");
diff --git a/src/test/theory_dl.cpp b/src/test/theory_dl.cpp
index d07ec34af..9521a8932 100644
--- a/src/test/theory_dl.cpp
+++ b/src/test/theory_dl.cpp
@@ -6,7 +6,7 @@
 
 void tst_theory_dl() {
     ast_manager m;
-    front_end_params params;
+    smt_params params;
     params.m_model = true;
     datalog::dl_decl_util u(m);
     smt::context ctx(m, params);
diff --git a/src/util/env_params.cpp b/src/util/env_params.cpp
index a76c2308b..28d80d92d 100644
--- a/src/util/env_params.cpp
+++ b/src/util/env_params.cpp
@@ -27,10 +27,12 @@ void env_params::updt_params() {
     set_verbosity_level(p.get_uint("verbose", get_verbosity_level()));
     enable_warning_messages(p.get_bool("warning", true));
     memory::set_max_size(p.get_uint("memory_max_size", 0));
+    memory::set_high_watermark(p.get_uint("memory_high_watermark", 0));
 }
 
 void env_params::collect_param_descrs(param_descrs & d) {
     d.insert("verbose", CPK_UINT, "be verbose, where the value is the verbosity level", "0");
     d.insert("warning", CPK_BOOL, "enable/disable warning messages", "true");
-    d.insert("memory_max_size", CPK_UINT, "set hard upper limit for memory consumption (in megabytes), if 0 then there is no bound.", "0");
+    d.insert("memory_max_size", CPK_UINT, "set hard upper limit for memory consumption (in megabytes), if 0 then there is no limit", "0");
+    d.insert("memory_high_watermark", CPK_UINT, "set high watermark for memory consumption (in megabytes), if 0 then there is no limit", "0");
 }