diff --git a/src/util/lp/column_info.h b/src/util/lp/column_info.h
index 407f40dfc..2a38900c1 100644
--- a/src/util/lp/column_info.h
+++ b/src/util/lp/column_info.h
@@ -69,16 +69,6 @@ public:
         m_column_index(static_cast<unsigned>(-1))
     {}
     
-    column_info(unsigned column_index) :
-        m_lower_bound_is_set(false),
-        m_lower_bound_is_strict(false),
-        m_upper_bound_is_set (false),
-        m_upper_bound_is_strict (false),
-        m_is_fixed(false),
-        m_cost(numeric_traits<T>::zero()),
-        m_column_index(column_index) {
-    }
-
     column_info(const column_info & ci) {
         m_name = ci.m_name;
         m_lower_bound_is_set = ci.m_lower_bound_is_set;
diff --git a/src/util/lp/lar_solver.cpp b/src/util/lp/lar_solver.cpp
index 30494aa1c..c83268602 100644
--- a/src/util/lp/lar_solver.cpp
+++ b/src/util/lp/lar_solver.cpp
@@ -909,13 +909,8 @@ bool lar_solver::try_to_set_fixed(column_info<mpq> & ci) {
     return false;
 }
 
-column_type lar_solver::get_column_type(const column_info<mpq> & ci) {
-    auto ret = ci.get_column_type_no_flipping();
-    if (ret == column_type::boxed) { // changing boxed to fixed because of the no span
-        if (ci.get_lower_bound() == ci.get_upper_bound())
-            ret = column_type::fixed;
-    }
-    return ret;
+column_type lar_solver::get_column_type(unsigned j) const{
+    return m_mpq_lar_core_solver.m_column_types[j];
 }
 
 std::string lar_solver::get_column_name(unsigned j) const {
diff --git a/src/util/lp/lar_solver.h b/src/util/lp/lar_solver.h
index f3aa4f23b..cfe581ba3 100644
--- a/src/util/lp/lar_solver.h
+++ b/src/util/lp/lar_solver.h
@@ -395,7 +395,7 @@ public:
 
     bool try_to_set_fixed(column_info<mpq> & ci);
 
-    column_type get_column_type(const column_info<mpq> & ci);
+    column_type get_column_type(unsigned j) const;
 
     std::string get_column_name(unsigned j) const;
 
diff --git a/src/util/lp/lp_primal_core_solver_def.h b/src/util/lp/lp_primal_core_solver_def.h
index 1e9edbd31..872922f60 100644
--- a/src/util/lp/lp_primal_core_solver_def.h
+++ b/src/util/lp/lp_primal_core_solver_def.h
@@ -1238,6 +1238,7 @@ template <typename T, typename X> void lp_primal_core_solver<T, X>::print_column
         break;
     case column_type::free_column:
         out << "( _" << this->m_x[j] << "_)" << std::endl;
+        break;
     default:
         lp_unreachable();
     }
diff --git a/src/util/lp/lp_solver_def.h b/src/util/lp/lp_solver_def.h
index 10c7a6feb..9b385dee6 100644
--- a/src/util/lp/lp_solver_def.h
+++ b/src/util/lp/lp_solver_def.h
@@ -24,7 +24,7 @@ Revision History:
 namespace lp {
 template <typename T, typename X> column_info<T> * lp_solver<T, X>::get_or_create_column_info(unsigned column) {
     auto it = m_map_from_var_index_to_column_info.find(column);
-    return (it == m_map_from_var_index_to_column_info.end())? (m_map_from_var_index_to_column_info[column] = new column_info<T>(static_cast<unsigned>(-1))) : it->second;
+    return (it == m_map_from_var_index_to_column_info.end())? (m_map_from_var_index_to_column_info[column] = new column_info<T>()) : it->second;
 }
 
 template <typename T, typename X>