diff --git a/pnmcc/fr.lip6.move.gal.application.pnmcc/src/smtanalysis/DDrunner.java b/pnmcc/fr.lip6.move.gal.application.pnmcc/src/smtanalysis/DDrunner.java
new file mode 100644
index 000000000..9e3f70c8a
--- /dev/null
+++ b/pnmcc/fr.lip6.move.gal.application.pnmcc/src/smtanalysis/DDrunner.java
@@ -0,0 +1,102 @@
+package smtanalysis;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+
+import fr.lip6.move.gal.application.mcc.MccTranslator;
+import fr.lip6.move.gal.itstools.BinaryToolsPlugin.Tool;
+import fr.lip6.move.gal.mcc.properties.ConcurrentHashDoneProperties;
+import fr.lip6.move.gal.itstools.CommandLineBuilder;
+import fr.lip6.move.gal.process.CommandLine;
+import fr.lip6.move.gal.process.Runner;
+import fr.lip6.move.serialization.SerializationUtil;
+
+public class DDrunner {
+
+	private static final int DEBUG = 1;
+	private MccTranslator reader;
+	private String workFolder;
+	private long timeout;
+	private CommandLine cl;
+	private String smtFile;
+
+	public DDrunner(MccTranslator reader, String workFolder, long timeout) {
+		this.reader = reader;
+		this.workFolder = workFolder;
+		this.timeout = timeout;
+	}
+
+	public String outputGalFile() throws IOException {
+		File file = Files.createTempFile("ddtosmt", ".gal").toFile();
+		if (DEBUG == 0)
+			file.deleteOnExit();
+		String outpath = file.getCanonicalPath();
+		SerializationUtil.systemToFile(reader.getSpec(), outpath, false);
+		return outpath;
+	}
+
+	public String getSmtFile() {
+		return smtFile;
+	}
+	
+	public void run() throws IOException {
+		buildCommandLine();
+
+		ProcessBuilder pb = new ProcessBuilder(cl.getArgs());
+		pb.directory(cl.getWorkingDir());
+		pb.redirectErrorStream(true);
+
+		System.out.println("Invoking ITS tools like this :" + cl);
+		try {
+			final Process process = pb.start();
+
+			Thread runnerThread = new Thread(() -> {
+				try {
+					int status = Runner.waitForOrTimeout(timeout, TimeUnit.SECONDS, cl, process);
+					if (status != 0) {
+						System.err.println("ITS-tools command line returned an error code " + status);
+					} else {
+						try (BufferedReader in = process.inputReader()) {
+							while (in.ready()) {
+								String line = in.readLine();
+								System.out.println(line);
+							}
+						} catch (IOException e) {
+							System.out.println("Error reading output of ITS tools." + e);
+						}
+					}
+				} catch (InterruptedException e) {
+					System.out.println("ITS tools runne²r thread asked to quit. Dying gracefully.");
+					return;
+				} catch (TimeoutException e) {
+					System.out.println("Detected timeout of ITS tools.");
+					return;
+				}
+			});
+			runnerThread.start();
+
+		} catch (IOException e) {
+			System.out.println("Failure when invoking ITS tools." + e);
+			return;
+		}
+	}
+
+	public void buildCommandLine() throws IOException {
+		CommandLineBuilder clb = new CommandLineBuilder(Tool.reach);
+		reader.createSPN(true, true);
+		reader.rebuildSpecification(new ConcurrentHashDoneProperties());
+		String modelff = outputGalFile();
+		clb.setModelFile(modelff);
+		clb.setModelType("CGAL");
+		cl = clb.getCommandLine();
+		cl.addArg("-exportsmt");
+		smtFile = new File(workFolder, "model.smt2").getCanonicalPath();
+		cl.addArg(smtFile);
+		cl.setWorkingDir(new File(workFolder));
+	}
+
+}
diff --git a/pnmcc/fr.lip6.move.gal.application.pnmcc/src/smtanalysis/SMTAnalyzer.java b/pnmcc/fr.lip6.move.gal.application.pnmcc/src/smtanalysis/SMTAnalyzer.java
new file mode 100644
index 000000000..ca9f46350
--- /dev/null
+++ b/pnmcc/fr.lip6.move.gal.application.pnmcc/src/smtanalysis/SMTAnalyzer.java
@@ -0,0 +1,61 @@
+package smtanalysis;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.smtlib.SMT;
+
+import android.util.SparseBoolArray;
+import fr.lip6.move.gal.application.mcc.MccTranslator;
+import fr.lip6.move.gal.mcc.properties.ConcurrentHashDoneProperties;
+import fr.lip6.move.gal.mcc.properties.DoneProperties;
+import fr.lip6.move.gal.structural.SparsePetriNet;
+import fr.lip6.move.gal.structural.smt.Problem;
+import fr.lip6.move.gal.structural.smt.ProblemSet;
+import fr.lip6.move.gal.structural.smt.SMTBasedReachabilitySolver;
+import fr.lip6.move.gal.structural.smt.VarSet;
+
+public class SMTAnalyzer {
+
+	public void analyze(MccTranslator reader, String workFolder) {
+		// step 0 : unfold, rename net places to indexed form
+		SparsePetriNet spn = reader.getSPN();
+		toIndexedNames(spn);
+		
+        // step 1 : invoke DD based tool (120 secs timeout)
+		DDrunner runner = new DDrunner(reader, workFolder, 120);
+		try {
+			runner.run();
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+		String smtFile = runner.getSmtFile();
+		
+		VarSet support = new VarSet();
+		SparseBoolArray sball = new SparseBoolArray(spn.getPlaceCount(), true);
+		support.addVars("s", sball );
+		Problem p = new Problem("complete",smtFile, SMT.instance.smtConfig.exprFactory.symbol("unreachable"), support);
+		
+		DoneProperties done = new ConcurrentHashDoneProperties();
+		ProblemSet problems = new ProblemSet(done);
+		problems.addProblem(p);
+		
+		List<Integer> repr = new ArrayList<>();
+		SMTBasedReachabilitySolver.solveProblems(problems, spn, 300, true, repr);
+		
+		System.out.println(problems);
+	}
+
+	private void toIndexedNames(SparsePetriNet spn) {
+		List<String> names = spn.getPnames();
+		for (int index =0; index < names.size() ; index++) {
+			names.set(index, "s"+index);
+		}
+		names = spn.getTnames();
+		for (int index =0; index < names.size() ; index++) {
+			names.set(index, "t"+index);
+		}		 
+	}
+
+}