diff --git a/tools/dvecompile.cpp b/tools/dvecompile.cpp
index 2af90b0b5b7f8e9251d1810403a479f881ef902d..5043c2e411b75bb31abff33cb7fd8b4589fe6ae4 100644
--- a/tools/dvecompile.cpp
+++ b/tools/dvecompile.cpp
@@ -2391,6 +2391,40 @@ void dve_compiler::gen_transition_info()
     block_end();
     line();
 
+    ////////////////////////////////////////////////
+    // EXPORT DO NOT ACCORD MATRIX                //
+    ////////////////////////////////////////////////
+
+    // guard nes matrix (#guards x #transitions)
+    snprintf(buf, BUFLEN, "int nda[%zu][%zu] = ", transitions.size(), transitions.size());
+    line(buf);
+    block_begin();
+    for(size_int_t i=0; i < transitions.size(); i++) {
+        append("{");
+        for(size_int_t j=0; j < transitions.size(); j++) {
+            if (j != 0) append(", ");
+            append(is_nda(transitions[i], transitions[j])?"1":"0");
+        }
+        if (i == guard.size() - 1)
+            line("}");
+        else
+            line("},");
+    }
+
+    block_end();
+    line(";");
+    line();
+
+    // guard nes function
+    line ("extern \"C\" const int* get_nda_matrix(int t) " );
+    block_begin();
+    snprintf(buf, BUFLEN, "if (t >= 0 && t < %zu) return nda[t];", transitions.size());
+    line(buf);
+    snprintf(buf, BUFLEN, "return NULL;");
+    line(buf);
+    block_end();
+    line();
+
     ////////////////////////////////////////////////
     // EXPORT NECESSARY DISABLING SETS FOR GUARDS //
     ////////////////////////////////////////////////
@@ -2476,6 +2510,13 @@ bool dve_compiler::is_guard_nds( guard& g, ext_transition_t& t ) {
     return true;
 }
 
+bool dve_compiler::is_nda( ext_transition_t& t1, ext_transition_t& t2 ) {
+    if (t1.) {
+
+    }
+    return true;
+}
+
 bool dve_compiler::may_be_coenabled( guard& ga, guard& gb) {
     // if type different, return default
     if (ga.type == gb.type || ga.type == GUARD_COMMITED_FIRST) {
diff --git a/tools/dvecompile.h b/tools/dvecompile.h
index 4192ce86e2a6b593d299d9061e40052879f9ebc7..7b1bee9f9c443e486029b86c2e05c2832f18f20a 100644
--- a/tools/dvecompile.h
+++ b/tools/dvecompile.h
@@ -236,6 +236,7 @@ struct dve_compiler: public dve_explicit_system_t
     bool get_const_expression( dve_expression_t & expr, int & value);
     bool is_guard_nes( guard& g, ext_transition_t& t );
     bool is_guard_nds( guard& g, ext_transition_t& t );
+    bool dve_compiler::is_nda( ext_transition_t& t1, ext_transition_t& t2);
     bool may_be_coenabled( guard& ga, guard& gb);
     void extract_predicates( std::vector<simple_predicate>& p, dve_expression_t& e);
     bool is_conflict_predicate(simple_predicate& p1, simple_predicate p2);