diff --git a/src/ast/arith_decl_plugin.cpp b/src/ast/arith_decl_plugin.cpp
index 3e0278237..5245b9685 100644
--- a/src/ast/arith_decl_plugin.cpp
+++ b/src/ast/arith_decl_plugin.cpp
@@ -496,7 +496,6 @@ func_decl * arith_decl_plugin::mk_func_decl(decl_kind k, unsigned num_parameters
     if (k == OP_NUM)
         return mk_num_decl(num_parameters, parameters, arity);
     if (arity == 0 && !is_const_op(k)) {
-        UNREACHABLE();
         m_manager->raise_exception("no arguments supplied to arithmetical operator");
         return 0;
     }
@@ -514,7 +513,6 @@ func_decl * arith_decl_plugin::mk_func_decl(decl_kind k, unsigned num_parameters
     if (k == OP_NUM)
         return mk_num_decl(num_parameters, parameters, num_args);
     if (num_args == 0 && !is_const_op(k)) {
-        UNREACHABLE();
         m_manager->raise_exception("no arguments supplied to arithmetical operator");
         return 0;
     }
diff --git a/src/opt/fu_malik.cpp b/src/opt/fu_malik.cpp
index af6cd6b26..75b8f86d0 100644
--- a/src/opt/fu_malik.cpp
+++ b/src/opt/fu_malik.cpp
@@ -54,7 +54,6 @@ namespace opt {
         unsigned        m_upper;
         unsigned        m_lower;
         model_ref       m_model;
-        unsigned        m_num_steps;
 
         imp(ast_manager& m, opt_solver& s, expr_ref_vector const& soft):
             m(m),
@@ -64,8 +63,7 @@ namespace opt {
             m_orig_soft(soft),
             m_aux(m),
             m_upper(0),
-            m_lower(0),
-            m_num_steps(0)
+            m_lower(0) 
         {
             m_upper = m_soft.size() + 1;
             m_assignment.resize(m_soft.size(), false);