diff --git a/src/math/lp/nla_core.cpp b/src/math/lp/nla_core.cpp
index b4efae222..235274931 100644
--- a/src/math/lp/nla_core.cpp
+++ b/src/math/lp/nla_core.cpp
@@ -17,6 +17,7 @@ Author:
 #include "math/grobner/pdd_solver.h"
 #include "math/dd/pdd_interval.h"
 #include "math/dd/pdd_eval.h"
+
 using namespace nla;
 
 typedef lp::lar_term term;
@@ -1575,8 +1576,4 @@ void core::refine_pseudo_linear(monic const& m) {
     }
     SASSERT(nlvar != null_lpvar);
     lemma |= ineq(lp::lar_term(m.var(), rational(-prod), nlvar), llc::EQ, rational(0));
-    // lemma.display(verbose_stream() << "pseudo-linear lemma\n");
-}
-
-
-
+}
\ No newline at end of file
diff --git a/src/params/smt_params_helper.pyg b/src/params/smt_params_helper.pyg
index 1ae97d72e..487772c81 100644
--- a/src/params/smt_params_helper.pyg
+++ b/src/params/smt_params_helper.pyg
@@ -78,12 +78,12 @@ def_module_params(module_name='smt',
                           ('arith.nl.grobner_expr_degree_growth', UINT, 2, 'grobner\'s maximum expr degree growth'),
                           ('arith.nl.grobner_max_simplified', UINT, 10000, 'grobner\'s maximum number of simplifications'),
                           ('arith.nl.grobner_cnfl_to_report', UINT, 1, 'grobner\'s maximum number of conflicts to report'),
-                          ('arith.nl.grobner_propagate_quotients', BOOL, False, 'detect conflicts x*y + z = 0 where x doesn\'t divide z'),
-                          ('arith.nl.grobner_gcd_test', BOOL, False, 'detect gcd conflicts for polynomial powers x^k - y = 0'),
+                          ('arith.nl.grobner_propagate_quotients', BOOL, True, 'detect conflicts x*y + z = 0 where x doesn\'t divide z'),
+                          ('arith.nl.grobner_gcd_test', BOOL, True, 'detect gcd conflicts for polynomial powers x^k - y = 0'),
                           ('arith.nl.gr_q', UINT, 10, 'grobner\'s quota'),
                           ('arith.nl.grobner_subs_fixed', UINT, 1, '0 - no subs, 1 - substitute, 2 - substitute fixed zeros only'),   
-                          ('arith.nl.grobner_expand_terms', BOOL, False, 'expand terms before computing grobner basis'),
-                          ('arith.nl.reduce_pseudo_linear', BOOL, False, 'create incremental linearization axioms for pseudo-linear monomials'),
+                          ('arith.nl.grobner_expand_terms', BOOL, True, 'expand terms before computing grobner basis'),
+                          ('arith.nl.reduce_pseudo_linear', BOOL, True, 'create incremental linearization axioms for pseudo-linear monomials'),
                           ('arith.nl.delay', UINT, 10, 'number of calls to final check before invoking bounded nlsat check'),
                           ('arith.nl.propagate_linear_monomials', BOOL, True, 'propagate linear monomials'),
                           ('arith.nl.optimize_bounds', BOOL, True, 'enable bounds optimization'),