diff --git a/debian/var/models/example_II.xml b/debian/var/models/example_II.xml
new file mode 100644
index 0000000..62f6f89
--- /dev/null
+++ b/debian/var/models/example_II.xml
@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!-- TODO DTD or XML Schema-->
+
+<gem-graph-model version="0.1">
+
+  <!-- Model identity informations -->
+  <identity>
+    <name>Modèle de test</name>
+    <author>Adrien Bourmault, Jean Sirmai</author>
+    <author_id>1,2</author_id>
+    <date>1629830000</date>             <!--Warning: it's an arbitrary unchecked date...-->
+    <version>1.0</version>
+
+  </identity>
+
+  <!-- Model parameters -->
+  <parameters id="" date="" author="">
+    <modelization>
+      <max_thread value="0"/>           <!--Why "0" ?-->
+      <max_cycles value="13"/>
+
+    </modelization>
+
+    <space>
+      <dimension value="1"/>            <!-- TODO redundancy here: dimension is given by the zero values of z and y-->
+      <size x="39" y="0" z="0"/>        <!-- In this example of random walk, I wish I could see the whole space in a single line of the monitoring CLI-->
+      <site_multiplicity value="2"/>    <!-- Indicates that there are two sites per cell-->
+      <boundaries/>                     <!-- TODO a proposition for boundaries encoding: -->
+                                        <!-- X="00" no boundaries   X="||" boundaries west and east   X="|0" boundary west only   X="0|" boundary east-->
+                                        <!-- X="|0" indicates that: a particle which moves beyond the east boundary will reenter on the west side-->
+                                        <!-- X="|0"               : no particle can move beyond the west boundary-->
+                                        
+    </space>
+
+  </parameters>
+
+  <!-- Model objects definition -->
+  <objects>
+    <object id="dimer" date="" author="">
+      <arrow x="0" y="0" z="0" site="0" weight="0"/>
+      <arrow x="0" y="0" z="0" site="1" weight="1"/>
+      <arrow x="1" y="0" z="0" site="0" weight="1"/>
+      <arrow x="1" y="0" z="0" site="1" weight="0"/>
+      <!-- A dimer is made of two linked adjacent particles.-->
+      <!-- Site 1 of particle 0 points at east to next particle.-->
+      <!-- Site 0 of particle 1 points at west to previous particle.-->
+
+    </object>
+
+  </objects>
+
+  <!-- Space description (initial state) -->
+  <space id="" date="" author="">
+    <arrow x="0"  y="0" z="0" site="1" weight="1"/>
+    <arrow x="1"  y="0" z="0" site="0" weight="1"/>
+    <arrow x="10" y="0" z="0" site="1" weight="1"/>
+    <arrow x="11" y="0" z="0" site="0" weight="1"/>
+    <arrow x="20" y="0" z="0" site="1" weight="1"/>
+    <arrow x="21" y="0" z="0" site="0" weight="1"/>
+    <!-- three dimers have been defined-->
+
+  </space>
+
+  <!-- Saved space description (saved states) -->
+  <savestates id="" date="" author="">          <!-- TODO or NOT TODO (not today...)-->
+    <space id="" date="">
+    </space>
+
+  </savestates>
+
+  <!-- Model transitions definition (rules) -->
+  <transitions id="" date="" author="">
+    <transition id="0" date="" author="" probability="1">   <!-- moves a dimer to east-->
+      <if>
+        <arrow x="0" y="0" z="0" site="1" weight="1"/>
+        <arrow x="1" y="0" z="0" site="0" weight="1"/>      <!-- a dimer is identified-->
+                                                            <!-- the local space origin is its "west" particule-->
+        <arrow x="2" y="0" z="0" site="1" weight="0"/>      <!-- the east location next this dimer is empty-->
+        <arrow x="3" y="0" z="0" site="0" weight="0"/>      <!-- In this very simple model, I do not need to check this condition-->
+
+      </if>
+
+      <then>                                                <!-- Therefore I can (and I want to) move it to its next east location-->
+        <arrow x="0" y="0" z="0" site="1" weight="0"/>
+        <arrow x="1" y="0" z="0" site="0" weight="0"/>      <!-- The identified dimer no more exists  ( :-(( -->
+        <arrow x="1" y="0" z="0" site="1" weight="1"/>
+        <arrow x="2" y="0" z="0" site="0" weight="1"/>      <!-- Happily, it is now rebuilt at its east location  ( ;-))-->
+
+      </then>
+
+    </transition>
+
+    <transition id="0" date="" author="" probability="1">   <!-- moves a dimer to west-->
+      <if>
+        <arrow x="0" y="0" z="0" site="1" weight="1"/>
+        <arrow x="1" y="0" z="0" site="0" weight="1"/>     <!-- a dimer is identified-->
+                                                            <!-- the local space origin is its "east" particule-->
+        <arrow x="-1" y="0" z="0" site="0" weight="0"/>     <!-- the west location next this dimer is empty-->
+        <arrow x="-2" y="0" z="0" site="1" weight="0"/>     <!-- In this very simple model, I do not need to check this condition-->
+
+      </if>
+
+      <then>                                                <!-- Therefore I can (and I want to) move it to its next west location-->
+        <arrow x="0"  y="0" z="0" site="1" weight="0"/>
+        <arrow x="1"  y="0" z="0" site="0" weight="0"/>     <!-- The identified dimer no more exists  ( :-(( -->
+        <arrow x="0"  y="0" z="0" site="0" weight="1"/>
+        <arrow x="-1" y="0" z="0" site="1" weight="1"/>     <!-- Happily, it is now rebuilt at its west location  ( ;-))-->
+
+      </then>
+
+    </transition>
+
+  </transitions>
+
+  <!-- Non context-specific tags -->
+  <ref id="" date="">https://www.a-lec.org</ref>
+  <quote id="" date="" author="" lang="">Quote</quote>
+
+</gem-graph-model>
diff --git a/src/model.c b/src/model.c
index 98b8de0..e109a39 100644
--- a/src/model.c
+++ b/src/model.c
@@ -295,7 +295,7 @@ void ModelSystemInit(Parameters_t *parameters)
             // Ask to parse the new model
             if (ModelParseFile(newModel) != 0) {
                 ModelDelete(newModel->id);
-                continue;
+                continue;XMAX
             };
 
             // Check model is valid and/or parsed