Merge "update verigraph"

18 files changed, 0 insertions, 2068 deletions

diff --git a/verigraph/service/src/mcnet/netobjs/AclFirewall.java b/verigraph/service/src/mcnet/netobjs/AclFirewall.java
deleted file mode 100644
index 4ae3421..0000000
--- a/verigraph/service/src/mcnet/netobjs/AclFirewall.java
+++ /dev/null
@@ -1,123 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2017 Politecnico di Torino and others.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Apache License, Version 2.0
- * which accompanies this distribution, and is available at
- * http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-
-package mcnet.netobjs;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import com.microsoft.z3.BoolExpr;
-import com.microsoft.z3.Context;
-import com.microsoft.z3.DatatypeExpr;
-import com.microsoft.z3.Expr;
-import com.microsoft.z3.FuncDecl;
-import com.microsoft.z3.IntExpr;
-import com.microsoft.z3.Solver;
-import com.microsoft.z3.Sort;
-
-import mcnet.components.NetContext;
-import mcnet.components.Network;
-import mcnet.components.NetworkObject;
-import mcnet.components.Tuple;
-
-/** Represents a Firewall with the associated Access Control List
- *
- */
-public class AclFirewall extends NetworkObject{
-
-	List<BoolExpr> constraints;
-	Context ctx;
-	DatatypeExpr fw;
-	ArrayList<Tuple<DatatypeExpr,DatatypeExpr>> acls;
-	Network net;
-	NetContext nctx;
-	FuncDecl acl_func;
-
-	public AclFirewall(Context ctx, Object[]... args) {
-		super(ctx, args);
-	}
-
-	@Override
-	protected void init(Context ctx, Object[]... args) {
-		this.ctx = ctx;
-		isEndHost=false;
-   		constraints = new ArrayList<BoolExpr>();
-   		acls = new ArrayList<Tuple<DatatypeExpr,DatatypeExpr>>();
-   		z3Node = ((NetworkObject)args[0][0]).getZ3Node();
-        fw = z3Node;
-	    net = (Network)args[0][1];
-	    nctx = (NetContext)args[0][2];
-	    net.saneSend(this);
-		firewallSendRules();
-	}
-
-	/**
-	 * Wrap add acls
-	 * @param policy
-	 */
-	public void setPolicy(ArrayList<Tuple<DatatypeExpr, DatatypeExpr>> policy){
-		addAcls(policy);
-	}
-
-	public void addAcls(ArrayList<Tuple<DatatypeExpr,DatatypeExpr>> acls){
-		this.acls.addAll(acls);
-	}
-
-	@Override
-	public DatatypeExpr getZ3Node() {
-		return fw;
-	}
-
-
-	@Override
-	protected void addConstraints(Solver solver) {
-			BoolExpr[] constr = new BoolExpr[constraints.size()];
-		    solver.add(constraints.toArray(constr));
-		    aclConstraints(solver);
-	}
-
-    private void firewallSendRules (){
-    	Expr p_0 = ctx.mkConst(fw+"_firewall_send_p_0", nctx.packet);
-    	Expr n_0 = ctx.mkConst(fw+"_firewall_send_n_0", nctx.node);
-    	Expr n_1 = ctx.mkConst(fw+"_firewall_send_n_1", nctx.node);
-    	IntExpr t_0 = ctx.mkIntConst(fw+"_firewall_send_t_0");
-    	IntExpr t_1 = ctx.mkIntConst(fw+"_firewall_send_t_1");
-    	acl_func = ctx.mkFuncDecl(fw+"_acl_func", new Sort[]{nctx.address, nctx.address},ctx.mkBoolSort());
-
-    	//Constraint1		send(fw, n_0, p, t_0)  -> (exist n_1,t_1 : (recv(n_1, fw, p, t_1) &&
-    	//    				t_1 < t_0 && !acl_func(p.src,p.dest))
-    	constraints.add(
-        	ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-	            ctx.mkImplies(
-	            	(BoolExpr)nctx.send.apply(new Expr[]{ fw, n_0, p_0, t_0}),
-	            	ctx.mkExists(new Expr[]{t_1},
-	            			ctx.mkAnd(ctx.mkLt(t_1,t_0),
-	            						ctx.mkExists(new Expr[]{n_1},
-	            								nctx.recv.apply(n_1, fw, p_0, t_1),1,null,null,null,null),
-	            						ctx.mkNot((BoolExpr)acl_func.apply(nctx.pf.get("src").apply(p_0), nctx.pf.get("dest").apply(p_0)))),1,null,null,null,null)),1,null,null,null,null));
-
-    }
-
-    private void aclConstraints(Solver solver){
-    	if (acls.size() == 0)
-            return;
-        Expr a_0 = ctx.mkConst(fw+"_firewall_acl_a_0", nctx.address);
-        Expr a_1 = ctx.mkConst(fw+"_firewall_acl_a_1", nctx.address);
-        BoolExpr[] acl_map = new BoolExpr[acls.size()];
-        for(int y=0;y<acls.size();y++){
-        	Tuple<DatatypeExpr,DatatypeExpr> tp = acls.get(y);
-        	acl_map[y] = ctx.mkOr(ctx.mkAnd(ctx.mkEq(a_0,tp._1),ctx.mkEq(a_1,tp._2)), ctx.mkAnd(ctx.mkEq(a_0,tp._2),ctx.mkEq(a_1,tp._1)));
-        }
-        //Constraint2		acl_func(a_0,a_1) == or(foreach ip1,ip2 in acl_map ((a_0 == ip1 && a_1 == ip2)||(a_0 == ip2 && a_1 == ip1)))
-        solver.add(ctx.mkForall(new Expr[]{a_0, a_1},
-        						ctx.mkEq(
-        								acl_func.apply(a_0, a_1),
-        								ctx.mkOr(acl_map)),1,null,null,null,null));
-    }
-}
\ No newline at end of file
diff --git a/verigraph/service/src/mcnet/netobjs/DumbNode.java b/verigraph/service/src/mcnet/netobjs/DumbNode.java
deleted file mode 100644
index 012ff40..0000000
--- a/verigraph/service/src/mcnet/netobjs/DumbNode.java
+++ /dev/null
@@ -1,42 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2017 Politecnico di Torino and others.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Apache License, Version 2.0
- * which accompanies this distribution, and is available at
- * http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-
-package mcnet.netobjs;
-
-import com.microsoft.z3.Context;
-import com.microsoft.z3.DatatypeExpr;
-import com.microsoft.z3.Solver;
-
-import mcnet.components.NetworkObject;
-
-/**
- * This is just a wrapper around z3 instances. The idea is that by using this we perhaps need to have
- * fewer (or no) ifs to deal with the case where we don't instantiate an object for a node
- *
- */
-public class DumbNode extends NetworkObject {
-	public DumbNode(Context ctx, Object[]... args){
-		super(ctx,args);
-	}
-
-	@Override
-	protected void addConstraints(Solver solver) {
-		return;
-	}
-
-	@Override
-	protected void init(Context ctx, Object[]... args) {
-		isEndHost=true;
-		this.z3Node = (DatatypeExpr)args[0][0];
-	}
-	@Override
-	public DatatypeExpr getZ3Node() {
-		return z3Node;
-	}
-}
diff --git a/verigraph/service/src/mcnet/netobjs/EndHost.java b/verigraph/service/src/mcnet/netobjs/EndHost.java
deleted file mode 100644
index 99cf732..0000000
--- a/verigraph/service/src/mcnet/netobjs/EndHost.java
+++ /dev/null
@@ -1,100 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2017 Politecnico di Torino and others.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Apache License, Version 2.0
- * which accompanies this distribution, and is available at
- * http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-
-package mcnet.netobjs;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import com.microsoft.z3.BoolExpr;
-import com.microsoft.z3.Context;
-import com.microsoft.z3.DatatypeExpr;
-import com.microsoft.z3.Expr;
-import com.microsoft.z3.IntExpr;
-import com.microsoft.z3.Solver;
-
-import mcnet.components.NetContext;
-import mcnet.components.Network;
-import mcnet.components.NetworkObject;
-/**
- * End host network objects
- *
- */
-public class EndHost extends NetworkObject{
-
-	List<BoolExpr> constraints;
-	Context ctx;
-	DatatypeExpr node;
-	Network net;
-	NetContext nctx;
-
-	public EndHost(Context ctx, Object[]... args) {
-		super(ctx, args);
-	}
-
-	@Override
-	protected void init(Context ctx, Object[]... args) {
-		this.ctx = ctx;
-		isEndHost=true;
-   		constraints = new ArrayList<BoolExpr>();
-        z3Node = ((NetworkObject)args[0][0]).getZ3Node();
-        node = z3Node;
-        net = (Network)args[0][1];
-        nctx = (NetContext)args[0][2];
-		endHostRules();
-	}
-
-	@Override
-	public DatatypeExpr getZ3Node() {
-		return node;
-	}
-
-	@Override
-	protected void addConstraints(Solver solver) {
-			BoolExpr[] constr = new BoolExpr[constraints.size()];
-		    solver.add(constraints.toArray(constr));
-	}
-
-    public void endHostRules (){
-    	Expr n_0 = ctx.mkConst("eh_"+node+"_n_0", nctx.node);
-        IntExpr t_0 = ctx.mkIntConst("eh_"+node+"_t_0");
-        Expr p_0 = ctx.mkConst("eh_"+node+"_p_0", nctx.packet);
-
-        //Constraint1		send(node, n_0, p, t_0) -> nodeHasAddr(node,p.src)
-        constraints.add(
-        	ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-	            ctx.mkImplies(
-	            	(BoolExpr)nctx.send.apply(	new Expr[]{ node, n_0, p_0, t_0}),
-	            	(BoolExpr)nctx.nodeHasAddr.apply(new Expr[]{node, nctx.pf.get("src").apply(p_0)})),1,null,null,null,null));
-        //Constraint2		send(node, n_0, p, t_0) -> p.origin == node
-        constraints.add(
-        	ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                ctx.mkImplies(
-                		(BoolExpr)nctx.send.apply(	new Expr[]{ node, n_0, p_0, t_0}),
-                		ctx.mkEq(nctx.pf.get("origin").apply(p_0),node)),1,null,null,null,null));
-        //Constraint3      send(node, n_0, p, t_0) -> p.orig_body == p.body
-        constraints.add(
-        	ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                ctx.mkImplies(
-                		(BoolExpr)nctx.send.apply(new Expr[]{ node, n_0, p_0, t_0}),
-                		ctx.mkEq(nctx.pf.get("orig_body").apply(p_0),nctx.pf.get("body").apply(p_0))),1,null,null,null,null));
-        //Constraint4		recv(n_0, node, p, t_0) -> nodeHasAddr(node,p.dest)
-        constraints.add(
-        	ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                ctx.mkImplies(
-                		(BoolExpr)nctx.recv.apply(	new Expr[]{ n_0, node, p_0, t_0}),
-    	            	(BoolExpr)nctx.nodeHasAddr.apply(new Expr[]{node, nctx.pf.get("dest").apply(p_0)})),1,null,null,null,null));
-
-//       Just a try: here we state that an endhost is not able to issue a HTTP response traffic
-//       See PolitoCache.py model for constants definition (2 means HTTP_RESPONSE, 1 means HTTP_REQUEST)
-//         constraints.add(ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-//                 ctx.mkImplies((BoolExpr)nctx.send.apply(node, n_0, p_0, t_0),
-//                            ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(1))),1,null,null,null,null));
-    }
-}
\ No newline at end of file
diff --git a/verigraph/service/src/mcnet/netobjs/PacketModel.java b/verigraph/service/src/mcnet/netobjs/PacketModel.java
deleted file mode 100644
index 5761861..0000000
--- a/verigraph/service/src/mcnet/netobjs/PacketModel.java
+++ /dev/null
@@ -1,70 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2017 Politecnico di Torino and others.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Apache License, Version 2.0
- * which accompanies this distribution, and is available at
- * http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-
-package mcnet.netobjs;
-
-import com.microsoft.z3.DatatypeExpr;
-
-/*
- * Fields that can be configured -> "dest","body","seq","proto","emailFrom","url","options"
- */
-public class PacketModel {
-
-	private DatatypeExpr ip_dest;
-	private Integer body;
-	private Integer seq;
-	private Integer proto;
-	private Integer emailFrom;
-	private Integer url;
-	private Integer options;
-
-	public DatatypeExpr getIp_dest() {
-		return ip_dest;
-	}
-	public void setIp_dest(DatatypeExpr ip_dest) {
-		this.ip_dest = ip_dest;
-	}
-	public Integer getBody() {
-		return body;
-	}
-	public void setBody(Integer body) {
-		this.body = body;
-	}
-	public Integer getSeq() {
-		return seq;
-	}
-	public void setSeq(Integer seq) {
-		this.seq = seq;
-	}
-	public Integer getProto() {
-		return proto;
-	}
-	public void setProto(Integer proto) {
-		this.proto = proto;
-	}
-	public Integer getEmailFrom() {
-		return emailFrom;
-	}
-	public void setEmailFrom(Integer emailFrom) {
-		this.emailFrom = emailFrom;
-	}
-	public Integer getUrl() {
-		return url;
-	}
-	public void setUrl(Integer url) {
-		this.url = url;
-	}
-	public Integer getOptions() {
-		return options;
-	}
-	public void setOptions(Integer options) {
-		this.options = options;
-	}
-
-}
diff --git a/verigraph/service/src/mcnet/netobjs/PolitoAntispam.java b/verigraph/service/src/mcnet/netobjs/PolitoAntispam.java
deleted file mode 100644
index abb4615..0000000
--- a/verigraph/service/src/mcnet/netobjs/PolitoAntispam.java
+++ /dev/null
@@ -1,124 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2017 Politecnico di Torino and others.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Apache License, Version 2.0
- * which accompanies this distribution, and is available at
- * http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-
-package mcnet.netobjs;
-
-
-import java.util.ArrayList;
-import java.util.List;
-
-import com.microsoft.z3.BoolExpr;
-import com.microsoft.z3.Context;
-import com.microsoft.z3.DatatypeExpr;
-import com.microsoft.z3.Expr;
-import com.microsoft.z3.FuncDecl;
-import com.microsoft.z3.IntExpr;
-import com.microsoft.z3.Solver;
-
-import mcnet.components.NetContext;
-import mcnet.components.Network;
-import mcnet.components.NetworkObject;
-
-/**
- * Model of an anti-spam node
- *
- */
-public class PolitoAntispam extends NetworkObject{
-
-		List<BoolExpr> constraints;
-		Context ctx;
-		DatatypeExpr politoAntispam;
-		Network net;
-		NetContext nctx;
-		FuncDecl isInBlacklist;
-
-		public PolitoAntispam(Context ctx, Object[]... args) {
-			super(ctx, args);
-		}
-
-		@Override
-		protected void init(Context ctx, Object[]... args) {
-			this.ctx = ctx;
-			isEndHost=false;
-	   		constraints = new ArrayList<BoolExpr>();
-	        z3Node = ((NetworkObject)args[0][0]).getZ3Node();
-	        politoAntispam = z3Node;
-	        net = (Network)args[0][1];
-	        nctx = (NetContext)args[0][2];
-	        //net.saneSend(this);
-	    }
-
-		@Override
-		public DatatypeExpr getZ3Node() {
-			return politoAntispam;
-		}
-
-		@Override
-		protected void addConstraints(Solver solver) {
-				BoolExpr[] constr = new BoolExpr[constraints.size()];
-			    solver.add(constraints.toArray(constr));
-		}
-
-	    public void installAntispam (int[] blackList){
-	    	Expr n_0 = ctx.mkConst(politoAntispam+"_n_0", nctx.node);
-	    	Expr n_1 = ctx.mkConst(politoAntispam+"_n_1", nctx.node);
-	    	Expr p_0 = ctx.mkConst(politoAntispam+"_p_0", nctx.packet);
-	    	IntExpr t_0 = ctx.mkIntConst(politoAntispam+"_t_0");
-	    	IntExpr t_1 = ctx.mkIntConst(politoAntispam+"_t_1");
-	    	IntExpr ef_0 = ctx.mkIntConst(politoAntispam+"_ef_0");
-
-            isInBlacklist = ctx.mkFuncDecl(politoAntispam+"_isInBlacklist", ctx.mkIntSort(), ctx.mkBoolSort());
-            BoolExpr[] blConstraint = new BoolExpr[blackList.length];
-            if(blackList.length != 0){
-                for (int i=0;i<blackList.length;i++)
-                    blConstraint[i]=(ctx.mkEq(ef_0,ctx.mkInt(blackList[i])));
-                //Constraint1a		if(isInBlackList(ef_0) == or(for bl in blacklist (ef_0==bl)) ? true : false
-                constraints.add(ctx.mkForall(new Expr[]{ef_0}, ctx.mkIff((BoolExpr)isInBlacklist.apply(ef_0),ctx.mkOr(blConstraint)),1,null,null,null,null));
-            }else{
-                //Constraint1b		isInblackList(ef_0) == false
-                constraints.add(ctx.mkForall(new Expr[]{ef_0}, ctx.mkEq((BoolExpr)isInBlacklist.apply(ef_0), ctx.mkBool(false)),1,null,null,null,null));
-            }
-
-            //Constraint2		send(politoAntispam, n_0, p, t_0) && p.proto(POP3_RESP) ->
-            //						(exist  n_1,t_1 : (recv(n_1, politoAntispam, p, t_1) && t_1 < t_0)) && !isInBlackList(p.emailFrom)
-            constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                                ctx.mkImplies(ctx.mkAnd((BoolExpr)nctx.send.apply(politoAntispam, n_0, p_0, t_0), ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.POP3_RESPONSE))),
-                                    ctx.mkAnd(	ctx.mkExists(new Expr[]{n_1, t_1},
-                                              	ctx.mkAnd((BoolExpr)nctx.recv.apply(n_1, politoAntispam, p_0, t_1), ctx.mkLt(t_1 , t_0)),1,null,null,null,null),
-                                    			ctx.mkNot((BoolExpr)isInBlacklist.apply(nctx.pf.get("emailFrom").apply(p_0))))),1,null,null,null,null));
-
-	        //Constraint3		send(politoAntispam, n_0, p, t_0) && p.proto(POP3_REQ) ->
-            //						(exist n_1,t_1 : (recv(n_1, politoAntispam, p, t_1) && t_1 < t_0))
-            constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies(ctx.mkAnd((BoolExpr)nctx.send.apply(politoAntispam, n_0, p_0, t_0), ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.POP3_REQUEST))),
-                        ctx.mkAnd(ctx.mkExists(new Expr[]{n_1, t_1},
-                                    ctx.mkAnd((BoolExpr)nctx.recv.apply(n_1, politoAntispam, p_0, t_1),
-                                    			ctx.mkLt(t_1 , t_0)),1,null,null,null,null))),1,null,null,null,null));
-
-            //Constraint4		send(politoAntispam, politoErrFunction, p, t_0) ->
-            //            			(exist n_1,t_1 : (recv(n_1, politoAntispam, p, t_1) && t_1 < t_0 && p.emailFrom ==1))
-            constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(politoAntispam, nctx.nm.get("politoErrFunction").getZ3Node(), p_0, t_0),
-                        ctx.mkAnd(ctx.mkExists(new Expr[]{n_1, t_1},
-                                    ctx.mkAnd((BoolExpr)nctx.recv.apply(n_1, politoAntispam, p_0, t_1),
-                                    			ctx.mkLt(t_1 , t_0),
-                                    			ctx.mkEq(nctx.pf.get("emailFrom").apply(p_0),ctx.mkInt(1))),1,null,null,null,null))),1,null,null,null,null));
-
-	        //Constraint5		send(politoAntispam, n_0, p, t_0) -> p.proto == POP_REQ || p.protpo == POP_RESP
-            constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(politoAntispam, n_0, p_0, t_0),
-                        ctx.mkOr(	ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.POP3_REQUEST)),
-                        			ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.POP3_RESPONSE)))),1,null,null,null,null));
-
-            //Constraint6		send(politoAntispam, n_0, p, t_0) -> nodeHasAddr(politoAntispam,p.src)
-            constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(politoAntispam, n_0, p_0, t_0),
-                        ctx.mkNot((BoolExpr)nctx.nodeHasAddr.apply(politoAntispam,nctx.pf.get("src").apply(p_0)))),1,null,null,null,null));
-   	    }
-	}
\ No newline at end of file
diff --git a/verigraph/service/src/mcnet/netobjs/PolitoCache.java b/verigraph/service/src/mcnet/netobjs/PolitoCache.java
deleted file mode 100644
index 948915c..0000000
--- a/verigraph/service/src/mcnet/netobjs/PolitoCache.java
+++ /dev/null
@@ -1,177 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2017 Politecnico di Torino and others.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Apache License, Version 2.0
- * which accompanies this distribution, and is available at
- * http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-
-package mcnet.netobjs;
-
-
-import java.util.ArrayList;
-import java.util.List;
-
-import com.microsoft.z3.BoolExpr;
-import com.microsoft.z3.Context;
-import com.microsoft.z3.DatatypeExpr;
-import com.microsoft.z3.Expr;
-import com.microsoft.z3.FuncDecl;
-import com.microsoft.z3.IntExpr;
-import com.microsoft.z3.Solver;
-import com.microsoft.z3.Sort;
-
-import mcnet.components.NetContext;
-import mcnet.components.Network;
-import mcnet.components.NetworkObject;
-/**Cache Model
- *
- */
-public class PolitoCache extends NetworkObject{
-
-		List<BoolExpr> constraints;
-		Context ctx;
-		DatatypeExpr politoCache;
-		Network net;
-		NetContext nctx;
-		FuncDecl isInBlacklist;
-
-		public PolitoCache(Context ctx, Object[]... args) {
-			super(ctx, args);
-		}
-
-		@Override
-		protected void init(Context ctx, Object[]... args) {
-			this.ctx = ctx;
-			isEndHost=false;
-	   		constraints = new ArrayList<BoolExpr>();
-	        z3Node = ((NetworkObject)args[0][0]).getZ3Node();
-	        politoCache = z3Node;
-	        net = (Network)args[0][1];
-	        nctx = (NetContext)args[0][2];
-	        //net.saneSend(this);
-	    }
-
-		@Override
-		public DatatypeExpr getZ3Node() {
-			return politoCache;
-		}
-
-		@Override
-		protected void addConstraints(Solver solver) {
-				BoolExpr[] constr = new BoolExpr[constraints.size()];
-			    solver.add(constraints.toArray(constr));
-		}
-
-	    public void installCache (NetworkObject[] internalNodes){
-	    	Expr n_0 = ctx.mkConst("politoCache_"+politoCache+"_n_0", nctx.node);
-	    	Expr n_1 = ctx.mkConst("politoCache_"+politoCache+"_n_1", nctx.node);
-	    	Expr n_2 = ctx.mkConst("politoCache_"+politoCache+"_n_2", nctx.node);
-	    	Expr p_0 = ctx.mkConst("politoCache_"+politoCache+"_p_0", nctx.packet);
-	    	Expr p_1 = ctx.mkConst("politoCache_"+politoCache+"_p_1", nctx.packet);
-	    	Expr p_2 = ctx.mkConst("politoCache_"+politoCache+"_p_2", nctx.packet);
-
-	    	IntExpr t_0 = ctx.mkIntConst("politoCache_"+politoCache+"_t_0");
-	    	IntExpr t_1 = ctx.mkIntConst("politoCache_"+politoCache+"_t_1");
-	    	IntExpr t_2 = ctx.mkIntConst("politoCache_"+politoCache+"_t_2");
-
-	    	Expr a_0 = ctx.mkConst(politoCache+"politoCache_a_0", nctx.node);
-	    	IntExpr u_0 = ctx.mkIntConst("politoCache_"+politoCache+"_u_0");
-
-	    	FuncDecl isInternalNode = ctx.mkFuncDecl(politoCache+"_isInternalNode", nctx.node, ctx.mkBoolSort());
-	    	FuncDecl isInCache = ctx.mkFuncDecl(politoCache+"_isInCache", new Sort[]{ctx.mkIntSort(),ctx.mkIntSort()}, ctx.mkBoolSort());
-
-	    	assert(internalNodes.length!=0); //No internal nodes => Should never happen
-
-	    	//Modeling the behavior of the isInternalNode() and isInCache() functions
-	    	BoolExpr[] internalNodesConstraint = new BoolExpr[internalNodes.length];
-	    	for(int w=0;w<internalNodesConstraint.length;w++)
-	    		internalNodesConstraint[w]= (ctx.mkEq(a_0,internalNodes[w].getZ3Node()));
-
-	    	//Constraint1		if(isInternalNode(a_0) == or(listadeinodiinterni) ? True : false
-	    	constraints.add(
-	    			 ctx.mkForall(new Expr[]{a_0},
-	    					 ctx.mkIff((BoolExpr)isInternalNode.apply(a_0), ctx.mkOr(internalNodesConstraint)),1,null,null,null,null));
-
-//	    	constraints.add(ctx.mkForall(new Expr[]{a_0}, ctx.mkEq(isInternalNode.apply(a_0),ctx.mkOr(internalNodesConstraint)),1,null,null,null,null));
-
-//	    	constraints.add(ctx.mkForall(new Expr[]{u_0, t_0},
-//                     ctx.mkITE(ctx.mkExists(new Expr[]{t_1, t_2, p_1, p_2, n_1, n_2},
-//	                        	ctx.mkAnd(ctx.mkLt(t_1, t_2),
-//	                                ctx.mkLt(t_1, t_0),
-//	                                ctx.mkLt(t_2, t_0),
-//	                                (BoolExpr)nctx.recv.apply(n_1, politoCache, p_1, t_1),
-//	                                (BoolExpr)nctx.recv.apply(n_2, politoCache, p_2, t_2),
-//	                                ctx.mkEq(nctx.pf.get("proto").apply(p_1),ctx.mkInt(nctx.HTTP_REQUEST)),
-//	                                ctx.mkEq(nctx.pf.get("proto").apply(p_2),ctx.mkInt(nctx.HTTP_RESPONSE)),
-//	                                (BoolExpr)isInternalNode.apply(n_1),
-//	                                ctx.mkNot((BoolExpr)isInternalNode.apply(n_2)),
-//	                                ctx.mkEq(nctx.pf.get("url").apply(p_1),u_0),
-//	                                ctx.mkEq(nctx.pf.get("url").apply(p_2),u_0)),1,null,null,null,null),
-//                    		 ctx.mkEq(isInCache.apply(u_0,t_0),ctx.mkBool(true)),ctx.mkEq(isInCache.apply(u_0,t_0),ctx.mkBool(false))),1,null,null,null,null));
-//
-
-	    	//Constraint2	isInCache(u_0,t_0), exist t_1, t_2, p_1, p_2, n_1, n_2 :
-	    	//						    	(   t_1< t_2 < t_0 && recv(n_1, politoCache, p_1, t_1) && recv(n_2, politoCache, p_2, t_2))) &&
-	    	//	        						p_1.proto == HTTP_REQ &&  p_2.proto == HTTP_RESP &&
-	    	//	        						isInternalNode(n_1) && !isInternalNode(n_2) &&
-	    	//	        						p_1.url == u_0 &&  p_2.url == u_0 )
-	    	constraints.add(
-	    			ctx.mkForall(new Expr[]{u_0, t_0},
-	    			 ctx.mkImplies((BoolExpr)isInCache.apply(u_0, t_0),
-	    					 ctx.mkExists(new Expr[]{t_1,t_2,p_1,p_2,n_1, n_2},
-	    							 ctx.mkAnd(
-	    									 ctx.mkLt(t_1, t_2),
-	    									 ctx.mkLt(t_1, t_0),
-	    									 ctx.mkLt(t_2, t_0),
-	    									 (BoolExpr)nctx.recv.apply(n_1, politoCache, p_1, t_1),
-	    									 (BoolExpr)nctx.recv.apply(n_2, politoCache, p_2, t_2),
-	    									 ctx.mkEq(nctx.pf.get("proto").apply(p_1), ctx.mkInt(nctx.HTTP_REQUEST)),
-	    									 ctx.mkEq(nctx.pf.get("proto").apply(p_2), ctx.mkInt(nctx.HTTP_RESPONSE)),
-	    									 (BoolExpr)isInternalNode.apply(n_1),
-	    									 ctx.mkNot((BoolExpr)isInternalNode.apply(n_2)),
-	    									 ctx.mkEq(nctx.pf.get("url").apply(p_1), u_0),
-	    									 ctx.mkEq(nctx.pf.get("url").apply(p_2), u_0)),1,null,null,null,null)),1,null,null,null,null));
-//	    	//Always in cache
-//	    	constraints.add(ctx.mkForall(new Expr[]{u_0, t_0},ctx.mkEq(isInCache.apply(u_0,t_0),ctx.mkBool(true)),1,null,null,null,null));
-
-	    	//Constraint3	Modeling the behavior of the cache
-	    	//				send(politoCache, n_0, p, t_0) && !isInternalNode(n_0) ->
-			//	    			(exist t_1,n_1 :
-			//	    		    (t_1 < t_0 && recv(n_1, politoCache, p, t_1) &&
-			//	    		     p.proto == HTTP_REQ &&  !isInCache(p.url,t_0))
-	    	constraints.add(
-	    			ctx.mkForall(new Expr[]{n_0,p_0, t_0},
-	   	    			 ctx.mkImplies(
-	   	    					 ctx.mkAnd((BoolExpr)nctx.send.apply(politoCache,n_0,p_0,t_0),ctx.mkNot((BoolExpr)isInternalNode.apply(n_0))),
-	   	    					 ctx.mkAnd(ctx.mkExists(new Expr[]{t_1, n_1},
-	   	    							 ctx.mkAnd(
-	   	    									 ctx.mkLt(t_1, t_0),
-	   	    									 (BoolExpr)isInternalNode.apply(n_1),
-	   	    									 (BoolExpr)nctx.recv.apply(n_1, politoCache, p_0, t_1)),1,null,null,null,null),
-	   	    									 ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.HTTP_REQUEST)),
-	   	    									 ctx.mkNot((BoolExpr)isInCache.apply(nctx.pf.get("url").apply(p_0), t_0)))),1,null,null,null,null));
-
-	    	//Constraint4		send(politoCache, n_0, p, t_0) && isInternalNode(n_0) ->
-			//	    			(exist p_1,t_1 :
-			//	    		    	(t_1 < t_0 && recv(n_0, politoCache, p_1, t_1) &&
-			//	    		     	p_1.proto == HTTP_REQ && p.proto == HTTP_RESP &&
-			//	    		     	p_1.url == p.url &&  p.src == p_1.dest && p.dest==p_1.src
-			//	    		     	&& isInCache(p.url,t_0))
-	    	constraints.add(
-	    			ctx.mkForall(new Expr[]{n_0,p_0, t_0},
-	   	    			 ctx.mkImplies(
-	   	    					 ctx.mkAnd((BoolExpr)nctx.send.apply(politoCache,n_0,p_0,t_0),(BoolExpr)isInternalNode.apply(n_0)),
-	   	    					 ctx.mkAnd(ctx.mkExists(new Expr[]{p_1, t_1},
-	   	    							 ctx.mkAnd(
-	   	    									 ctx.mkLt(t_1, t_0),
-	   	    									(BoolExpr)nctx.recv.apply(n_0, politoCache, p_1, t_1),
-	   	    									 ctx.mkEq(nctx.pf.get("proto").apply(p_1), ctx.mkInt(nctx.HTTP_REQUEST)),
-	   	    									 ctx.mkEq(nctx.pf.get("url").apply(p_1), nctx.pf.get("url").apply(p_0))),1,null,null,null,null),
-	   	    							 ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.HTTP_RESPONSE)),
-	   	    							 ctx.mkEq(nctx.pf.get("src").apply(p_0), nctx.pf.get("dest").apply(p_1)),
-	   	    							 ctx.mkEq(nctx.pf.get("dest").apply(p_0), nctx.pf.get("src").apply(p_1)),
-		    							(BoolExpr)isInCache.apply(nctx.pf.get("url").apply(p_0), t_0))),1,null,null,null,null));
-	    }
-}
\ No newline at end of file
diff --git a/verigraph/service/src/mcnet/netobjs/PolitoEndHost.java b/verigraph/service/src/mcnet/netobjs/PolitoEndHost.java
deleted file mode 100644
index e12579f..0000000
--- a/verigraph/service/src/mcnet/netobjs/PolitoEndHost.java
+++ /dev/null
@@ -1,100 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2017 Politecnico di Torino and others.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Apache License, Version 2.0
- * which accompanies this distribution, and is available at
- * http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-
-package mcnet.netobjs;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import com.microsoft.z3.BoolExpr;
-import com.microsoft.z3.Context;
-import com.microsoft.z3.DatatypeExpr;
-import com.microsoft.z3.Expr;
-import com.microsoft.z3.IntExpr;
-import com.microsoft.z3.Solver;
-
-import mcnet.components.NetContext;
-import mcnet.components.Network;
-import mcnet.components.NetworkObject;
-
-public class PolitoEndHost extends NetworkObject {
-
-	List<BoolExpr> constraints = new ArrayList<BoolExpr>();
-	Context ctx;
-	DatatypeExpr politoEndHost;
-	Network net;
-	NetContext nctx;
-
-	public PolitoEndHost(Context ctx, Object[]... args) {
-		super(ctx, args);
-	}
-
-	@Override
-	public DatatypeExpr getZ3Node() {
-		return politoEndHost;
-	}
-
-	@Override
-	protected void init(Context ctx, Object[]... args) {
-		this.ctx = ctx;
-		this.isEndHost = true;
-		this.politoEndHost = this.z3Node = ((NetworkObject)args[0][0]).getZ3Node();
-		this.net = (Network)args[0][1];
-        this.nctx = (NetContext)args[0][2];
-	}
-
-	@Override
-	protected void addConstraints(Solver solver) {
-		BoolExpr[] constr = new BoolExpr[constraints.size()];
-	    solver.add(constraints.toArray(constr));
-	}
-
-	/*
-	 * Fields that can be configured -> "dest","body","seq","proto","emailFrom","url","options"
-	 */
-	public void installEndHost (PacketModel packet){
-		System.out.println("Installing PolitoEndHost...");
-		Expr n_0 = ctx.mkConst("PolitoEndHost_"+politoEndHost+"_n_0", nctx.node);
-    	Expr p_0 = ctx.mkConst("PolitoEndHost_"+politoEndHost+"_p_0", nctx.packet);
-    	IntExpr t_0 = ctx.mkIntConst("PolitoEndHost_"+politoEndHost+"_t_0");
-		BoolExpr predicatesOnPktFields = ctx.mkTrue();
-
-		if(packet.getIp_dest() != null)
-			predicatesOnPktFields = ctx.mkAnd(predicatesOnPktFields, ctx.mkEq(nctx.pf.get("dest").apply(p_0), packet.getIp_dest()));
-		if(packet.getBody() != null)
-			predicatesOnPktFields = ctx.mkAnd(predicatesOnPktFields, ctx.mkEq(nctx.pf.get("body").apply(p_0), ctx.mkInt(packet.getBody())));
-		if(packet.getEmailFrom() != null)
-			predicatesOnPktFields = ctx.mkAnd(predicatesOnPktFields, ctx.mkEq(nctx.pf.get("emailFrom").apply(p_0), ctx.mkInt(packet.getEmailFrom())));
-		if(packet.getOptions() != null)
-			predicatesOnPktFields = ctx.mkAnd(predicatesOnPktFields, ctx.mkEq(nctx.pf.get("options").apply(p_0), ctx.mkInt(packet.getOptions())));
-		if(packet.getProto() != null)
-			predicatesOnPktFields = ctx.mkAnd(predicatesOnPktFields, ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(packet.getProto())));
-		if(packet.getSeq() != null)
-			predicatesOnPktFields = ctx.mkAnd(predicatesOnPktFields, ctx.mkEq(nctx.pf.get("seq").apply(p_0), ctx.mkInt(packet.getSeq())));
-		if(packet.getUrl() != null)
-			predicatesOnPktFields = ctx.mkAnd(predicatesOnPktFields, ctx.mkEq(nctx.pf.get("url").apply(p_0), ctx.mkInt(packet.getUrl())));
-
-		//Constraint1		send(politoWebClient, n_0, p, t_0) -> p.origin == politoWebClient && p.orig_body == p.body && nodeHasAddr(politoWebClient,p.src)
-		constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                ctx.mkImplies((BoolExpr)nctx.send.apply(politoEndHost, n_0, p_0, t_0),
-                		ctx.mkAnd(predicatesOnPktFields,
-                				  ctx.mkEq(nctx.pf.get("orig_body").apply(p_0),nctx.pf.get("body").apply(p_0)),
-                				  ctx.mkEq(nctx.pf.get("origin").apply(p_0),politoEndHost),
-                				  (BoolExpr)nctx.nodeHasAddr.apply(politoEndHost,nctx.pf.get("src").apply(p_0)))),1,null,null,null,null));
-
-		//Constraint2		recv(n_0, politoWebClient, p, t_0) -> nodeHasAddr(politoWebClient,p.dest)
-		constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                ctx.mkImplies((BoolExpr)nctx.recv.apply(n_0,politoEndHost, p_0, t_0),
-                		(BoolExpr)nctx.nodeHasAddr.apply(politoEndHost,nctx.pf.get("dest").apply(p_0))),1,null,null,null,null));
-
-		System.out.println("Done.");
-		return;
-	}
-
-}
diff --git a/verigraph/service/src/mcnet/netobjs/PolitoErrFunction.java b/verigraph/service/src/mcnet/netobjs/PolitoErrFunction.java
deleted file mode 100644
index 5f84b9f..0000000
--- a/verigraph/service/src/mcnet/netobjs/PolitoErrFunction.java
+++ /dev/null
@@ -1,96 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2017 Politecnico di Torino and others.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Apache License, Version 2.0
- * which accompanies this distribution, and is available at
- * http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-
-package mcnet.netobjs;
-
-
-import java.util.ArrayList;
-import java.util.List;
-
-import com.microsoft.z3.BoolExpr;
-import com.microsoft.z3.Context;
-import com.microsoft.z3.DatatypeExpr;
-import com.microsoft.z3.Expr;
-import com.microsoft.z3.FuncDecl;
-import com.microsoft.z3.IntExpr;
-import com.microsoft.z3.Solver;
-
-import mcnet.components.NetContext;
-import mcnet.components.Network;
-import mcnet.components.NetworkObject;
-/**Error Function objects
- *
- */
-public class PolitoErrFunction extends NetworkObject{
-
-		List<BoolExpr> constraints;
-		Context ctx;
-		DatatypeExpr politoErrFunction;
-		Network net;
-		NetContext nctx;
-		FuncDecl isInBlacklist;
-
-		public PolitoErrFunction(Context ctx, Object[]... args) {
-			super(ctx, args);
-		}
-
-		@Override
-		protected void init(Context ctx, Object[]... args) {
-			this.ctx = ctx;
-			isEndHost=true;
-	   		constraints = new ArrayList<BoolExpr>();
-	        z3Node = ((NetworkObject)args[0][0]).getZ3Node();
-	        politoErrFunction = z3Node;
-	        net = (Network)args[0][1];
-	        nctx = (NetContext)args[0][2];
-	        errFunctionRules();
-	        //net.saneSend(this);
-	    }
-
-		@Override
-		public DatatypeExpr getZ3Node() {
-			return politoErrFunction;
-		}
-
-		@Override
-		protected void addConstraints(Solver solver) {
-//			System.out.println("[ERR FUNC] Installing rules.");
-			BoolExpr[] constr = new BoolExpr[constraints.size()];
-			solver.add(constraints.toArray(constr));
-		}
-
-	    private void errFunctionRules (){
-	    	Expr n_0 = ctx.mkConst("PolitoErrFunction_"+politoErrFunction+"_n_0", nctx.node);
-	    	Expr p_0 = ctx.mkConst("PolitoErrFunction_"+politoErrFunction+"_p_0", nctx.packet);
-	    	IntExpr t_0 = ctx.mkIntConst("PolitoErrFunction_"+politoErrFunction+"_t_0");
-
-//	    	 constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-//	    			 ctx.mkImplies((BoolExpr)nctx.send.apply(politoErrFunction, n_0, p_0, t_0),
-//	                 (BoolExpr)nctx.nodeHasAddr.apply(politoErrFunction, nctx.pf.get("src").apply(p_0))),1,null,null,null,null));
-//	    	 constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-//	    			 ctx.mkImplies((BoolExpr)nctx.send.apply(politoErrFunction, n_0, p_0, t_0),
-//	                 ctx.mkEq(nctx.pf.get("origin").apply(p_0), politoErrFunction)),1,null,null,null,null));
-//
-//	    	 constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-//	    			 ctx.mkImplies((BoolExpr)nctx.send.apply(politoErrFunction, n_0, p_0, t_0),
-//	    		                ctx.mkEq(nctx.pf.get("orig_body").apply(p_0),nctx.pf.get("body").apply(p_0))),1,null,null,null,null));
-
-
-//            Constraint1  	We want the ErrFunction not to send out any packet
-//	    					send(politoErrFunction, n_0, p, t_0) -> 1 == 2
-            constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(politoErrFunction, n_0, p_0, t_0),
-                        			ctx.mkEq(ctx.mkInt(1),ctx.mkInt(2))),1,null,null,null,null));
-
-//            constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-//            		ctx.mkImplies(	(BoolExpr)nctx.send.apply(n_0, politoErrFunction, p_0, t_0),
-//                            		(BoolExpr)nctx.nodeHasAddr.apply(politoErrFunction, nctx.pf.get("dest").apply(p_0))),1,null,null,null,null));
-
-	    }
-	}
\ No newline at end of file
diff --git a/verigraph/service/src/mcnet/netobjs/PolitoFieldModifier.java b/verigraph/service/src/mcnet/netobjs/PolitoFieldModifier.java
deleted file mode 100644
index 6d8d8fe..0000000
--- a/verigraph/service/src/mcnet/netobjs/PolitoFieldModifier.java
+++ /dev/null
@@ -1,91 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2017 Politecnico di Torino and others.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Apache License, Version 2.0
- * which accompanies this distribution, and is available at
- * http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-
-package mcnet.netobjs;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import com.microsoft.z3.BoolExpr;
-import com.microsoft.z3.Context;
-import com.microsoft.z3.DatatypeExpr;
-import com.microsoft.z3.Expr;
-import com.microsoft.z3.IntExpr;
-import com.microsoft.z3.Solver;
-
-import mcnet.components.NetContext;
-import mcnet.components.Network;
-import mcnet.components.NetworkObject;
-
-public class PolitoFieldModifier extends NetworkObject {
-
-	List<BoolExpr> constraints;
-	Context ctx;
-	DatatypeExpr politoFieldModifier;
-	Network net;
-	NetContext nctx;
-
-	public PolitoFieldModifier(Context ctx, Object[]... args) {
-		super(ctx, args);
-	}
-
-	@Override
-	public DatatypeExpr getZ3Node() {
-		return politoFieldModifier;
-	}
-
-	@Override
-	protected void init(Context ctx, Object[]... args) {
-		this.ctx = ctx;
-		isEndHost=false;
-   		constraints = new ArrayList<BoolExpr>();
-        z3Node = ((NetworkObject)args[0][0]).getZ3Node();
-        politoFieldModifier = z3Node;
-        net = (Network)args[0][1];
-        nctx = (NetContext)args[0][2];
-	}
-
-	@Override
-	protected void addConstraints(Solver solver) {
-		BoolExpr[] constr = new BoolExpr[constraints.size()];
-	    solver.add(constraints.toArray(constr));
-	}
-
-	public void installFieldModifier (){
-		Expr x = ctx.mkConst("politoFieldModifier_"+politoFieldModifier+"_x", nctx.node);
-    	Expr y = ctx.mkConst("politoFieldModifier_"+politoFieldModifier+"_y", nctx.node);
-    	Expr p_0 = ctx.mkConst("politoFieldModifier_"+politoFieldModifier+"_p_0", nctx.packet);
-    	Expr p_1 = ctx.mkConst("politoFieldModifier_"+politoFieldModifier+"_p_1", nctx.packet);
-
-    	IntExpr t_0 = ctx.mkIntConst("politoFieldModifier_"+politoFieldModifier+"_t_0");
-    	IntExpr t_1 = ctx.mkIntConst("politoFieldModifier_"+politoFieldModifier+"_t_1");
-
-    	constraints.add(
-    			ctx.mkForall(new Expr[]{t_0, p_0, x},
-    				ctx.mkImplies((BoolExpr)nctx.send.apply(politoFieldModifier,x,p_0,t_0),
-    							  ctx.mkExists(new Expr[]{y, p_1, t_1},
-  	    							 ctx.mkAnd(ctx.mkLt(t_1, t_0),
-  	    									   (BoolExpr)nctx.recv.apply(y, politoFieldModifier, p_1, t_1),
-  	    									   ctx.mkEq(nctx.pf.get("encrypted").apply(p_0), nctx.pf.get("encrypted").apply(p_1)),
-  	    									   ctx.mkEq(nctx.pf.get("src").apply(p_0), nctx.pf.get("src").apply(p_1)),
-  	    									   ctx.mkEq(nctx.pf.get("dest").apply(p_0), nctx.pf.get("dest").apply(p_1)),
-  	    									   ctx.mkEq(nctx.pf.get("inner_src").apply(p_0), nctx.pf.get("inner_src").apply(p_1)),
-  	    									   ctx.mkEq(nctx.pf.get("inner_dest").apply(p_0), nctx.pf.get("inner_dest").apply(p_1)),
-  	    									   ctx.mkEq(nctx.pf.get("origin").apply(p_0), nctx.pf.get("origin").apply(p_1)),
-  	    									   ctx.mkEq(nctx.pf.get("orig_body").apply(p_0), nctx.pf.get("orig_body").apply(p_1)),
-  	    									   ctx.mkEq(nctx.pf.get("body").apply(p_0), nctx.pf.get("body").apply(p_1)),
-  	    									   ctx.mkEq(nctx.pf.get("seq").apply(p_0), nctx.pf.get("seq").apply(p_1)),
-  	    									   ctx.mkEq(nctx.pf.get("proto").apply(p_0), nctx.pf.get("proto").apply(p_1)),
-  	    									   ctx.mkEq(nctx.pf.get("emailFrom").apply(p_0), nctx.pf.get("emailFrom").apply(p_1)),
-  	    									   ctx.mkNot(ctx.mkEq(nctx.pf.get("url").apply(p_0), nctx.pf.get("url").apply(p_1))),
-  	    									   ctx.mkEq(nctx.pf.get("options").apply(p_0), nctx.pf.get("options").apply(p_1))),1,null,null,null,null)),
-    			1,null,null,null,null));
-	}
-
-}
\ No newline at end of file
diff --git a/verigraph/service/src/mcnet/netobjs/PolitoIDS.java b/verigraph/service/src/mcnet/netobjs/PolitoIDS.java
deleted file mode 100644
index 6f2cddf..0000000
--- a/verigraph/service/src/mcnet/netobjs/PolitoIDS.java
+++ /dev/null
@@ -1,140 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2017 Politecnico di Torino and others.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Apache License, Version 2.0
- * which accompanies this distribution, and is available at
- * http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-
-package mcnet.netobjs;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import com.microsoft.z3.BoolExpr;
-import com.microsoft.z3.Context;
-import com.microsoft.z3.DatatypeExpr;
-import com.microsoft.z3.Expr;
-import com.microsoft.z3.FuncDecl;
-import com.microsoft.z3.IntExpr;
-import com.microsoft.z3.Solver;
-
-import mcnet.components.NetContext;
-import mcnet.components.Network;
-import mcnet.components.NetworkObject;
-
-public class PolitoIDS extends NetworkObject {
-
-	public static final int DROGA = 1; //no go
-	public static final int GATTINI = 2;  //go
-
-	Context ctx;
-	List<BoolExpr> constraints = new ArrayList<BoolExpr>();
-	DatatypeExpr politoIDS;
-	Network net;
-	NetContext nctx;
-	FuncDecl isInBlacklist;
-
-
-	public PolitoIDS(Context ctx, Object[]...args){
-		super(ctx, args);
-	}
-
-	@Override
-	public DatatypeExpr getZ3Node() {
-		return politoIDS;
-	}
-
-	@Override
-	protected void init(Context ctx, Object[]... args) {
-
-		this.ctx = ctx;
-		this.isEndHost = false;
-		this.politoIDS = this.z3Node = ((NetworkObject)args[0][0]).getZ3Node();
-		this.net = (Network)args[0][1];
-        this.nctx = (NetContext)args[0][2];
-
-	}
-
-	@Override
-	protected void addConstraints(Solver solver) {
-		BoolExpr[] constr = new BoolExpr[constraints.size()];
-	    solver.add(constraints.toArray(constr));
-
-	}
-
-	public void installIDS(int[] blackList){
-		Expr n_0 = ctx.mkConst(politoIDS + "_n_0", nctx.node);
-		Expr n_1 = ctx.mkConst(politoIDS + "_n_1", nctx.node);
-		Expr p_0 = ctx.mkConst(politoIDS + "_p_0", nctx.packet);
-		IntExpr t_0 = ctx.mkIntConst(politoIDS + "_t_0");
-		IntExpr t_1 = ctx.mkIntConst(politoIDS + "_t_1");
-		Expr b_0 = ctx.mkIntConst(politoIDS + "_b_0");
-
-		isInBlacklist = ctx.mkFuncDecl(politoIDS + "_isInBlacklist", ctx.mkIntSort(), ctx.mkBoolSort());
-
-
-		BoolExpr[] blConstraints = new BoolExpr[blackList.length];
-		if(blackList.length != 0){
-
-			for(int i = 0; i<blackList.length; i++)
-				blConstraints[i] = ctx.mkEq(b_0, ctx.mkInt(blackList[i]));
-
-			this.constraints.add(ctx.mkForall(new Expr[]{b_0},
-											  ctx.mkIff((BoolExpr)isInBlacklist.apply(b_0), ctx.mkOr(blConstraints)),
-											  1,
-											  null, null, null, null));
-		}else{
-			this.constraints.add(ctx.mkForall(new Expr[]{b_0},
-											  ctx.mkEq(isInBlacklist.apply(b_0), ctx.mkBool(false)),
-											  1,
-											  null, null, null, null));
-		}
-
-		//Constraint2    		send(politoIDS, n_0, p, t_0) && (p.proto(HTTP_RESPONSE) || p.proto(HTTP_REQUEST)) ->
-        //						(exist  n_1,t_1 : (recv(n_1, politoIDS, p, t_1) && t_1 < t_0)) && !isInBlackList(p.body)
-
-		this.constraints.add(ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-										  ctx.mkImplies(ctx.mkAnd((BoolExpr)nctx.send.apply(politoIDS, n_0, p_0, t_0), ctx.mkOr(ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.HTTP_RESPONSE)), ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.HTTP_REQUEST)))),
-												  		ctx.mkAnd(ctx.mkExists(new Expr[]{n_1,t_1},
-												  							   ctx.mkAnd((BoolExpr)nctx.recv.apply(n_1,politoIDS,p_0,t_1),ctx.mkLt(t_1, t_0)),
-												  							   1,
-												  							   null, null, null, null),
-												  				  ctx.mkNot((BoolExpr)isInBlacklist.apply(nctx.pf.get("body").apply(p_0))))),
-										  1,
-										  null, null, null, null));
-
-		//Constraint3		send(politoIDS, n_0, p, t_0) && p.proto(HTTP_REQUEST) ->
-        //						(exist n_1,t_1 : (recv(n_1, politoIDS, p, t_1) && t_1 < t_0)) Constraint not needed anymore (included in contr. 2)
-		/*
-		this.constraints.add(ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-										  ctx.mkImplies(ctx.mkAnd((BoolExpr)nctx.send.apply(politoIDS, n_0, p_0, t_0), ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.HTTP_REQUEST))),
-												  		ctx.mkAnd(ctx.mkExists(new Expr[]{n_1,t_1},
-												  							   ctx.mkAnd((BoolExpr)nctx.recv.apply(n_1,politoIDS,p_0,t_1),ctx.mkLt(t_1, t_0)),
-												  							   1,
-												  							   null, null, null, null))),
-										  1,
-										  null, null, null, null));
-		*/
-
-		//Constraint5		send(politoIDS, n_0, p, t_0) -> p.proto == HTTP_REQ || p.protpo == HTTP_RESP
-
-        this.constraints.add(ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                						  ctx.mkImplies((BoolExpr)nctx.send.apply(politoIDS, n_0, p_0, t_0),
-                								  		ctx.mkOr(ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.HTTP_REQUEST)),
-                								  				 ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.HTTP_RESPONSE)))),
-                						  1,
-                						  null,null,null,null));
-
-        //Constraint6		send(politoIDS, n_0, p, t_0) -> nodeHasAddr(politoIDS,p.src)
-
-        this.constraints.add(ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                						  ctx.mkImplies((BoolExpr)nctx.send.apply(politoIDS, n_0, p_0, t_0),
-                								  		ctx.mkNot((BoolExpr)nctx.nodeHasAddr.apply(politoIDS,nctx.pf.get("src").apply(p_0)))),
-                						  1,
-                						  null,null,null,null));
-
-	}
-
-}
diff --git a/verigraph/service/src/mcnet/netobjs/PolitoMailClient.java b/verigraph/service/src/mcnet/netobjs/PolitoMailClient.java
deleted file mode 100644
index 6925258..0000000
--- a/verigraph/service/src/mcnet/netobjs/PolitoMailClient.java
+++ /dev/null
@@ -1,106 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2017 Politecnico di Torino and others.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Apache License, Version 2.0
- * which accompanies this distribution, and is available at
- * http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-
-package mcnet.netobjs;
-
-
-import java.util.ArrayList;
-import java.util.List;
-
-import com.microsoft.z3.BoolExpr;
-import com.microsoft.z3.Context;
-import com.microsoft.z3.DatatypeExpr;
-import com.microsoft.z3.Expr;
-import com.microsoft.z3.FuncDecl;
-import com.microsoft.z3.IntExpr;
-import com.microsoft.z3.Solver;
-
-import mcnet.components.NetContext;
-import mcnet.components.Network;
-import mcnet.components.NetworkObject;
-/**
- *  MailClient objects
- *
- */
-public class PolitoMailClient extends NetworkObject{
-
-		List<BoolExpr> constraints;
-		Context ctx;
-		DatatypeExpr politoMailClient;
-		Network net;
-		NetContext nctx;
-		FuncDecl isInBlacklist;
-
-		public PolitoMailClient(Context ctx, Object[]... args) {
-			super(ctx, args);
-		}
-
-		@Override
-		protected void init(Context ctx, Object[]... args) {
-			this.ctx = ctx;
-	        isEndHost=true;
-		   	constraints = new ArrayList<BoolExpr>();
-	        z3Node = ((NetworkObject)args[0][0]).getZ3Node();
-	        politoMailClient = z3Node;
-	        net = (Network)args[0][1];
-	        nctx = (NetContext)args[0][2];
-	        DatatypeExpr ipServer = (DatatypeExpr) args[0][3];
-	        mailClientRules(ipServer);
-	        //net.saneSend(this);
-	    }
-
-		@Override
-		public DatatypeExpr getZ3Node() {
-			return politoMailClient;
-		}
-
-		@Override
-		protected void addConstraints(Solver solver) {
-//			System.out.println("[MailClient] Installing rules.");
-			BoolExpr[] constr = new BoolExpr[constraints.size()];
-			solver.add(constraints.toArray(constr));
-		}
-
-	    private void mailClientRules (DatatypeExpr ipServer){
-	    	Expr n_0 = ctx.mkConst("PolitoMailClient_"+politoMailClient+"_n_0", nctx.node);
-	    	Expr p_0 = ctx.mkConst("PolitoMailClient_"+politoMailClient+"_p_0", nctx.packet);
-	    	IntExpr t_0 = ctx.mkIntConst("PolitoMailClient_"+politoMailClient+"_t_0");
-
-//            Constraint1		send(politoMailClient, n_0, p, t_0) -> nodeHasAddr(politoMailClient,p.src)
-			constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(politoMailClient, n_0, p_0, t_0),
-                    		(BoolExpr)nctx.nodeHasAddr.apply(politoMailClient,nctx.pf.get("src").apply(p_0))),1,null,null,null,null));
-
-//            Constraint2		send(politoMailClient, n_0, p, t_0) -> p.origin == politoMailClient
-			constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(politoMailClient, n_0, p_0, t_0),
-                    		ctx.mkEq(nctx.pf.get("origin").apply(p_0),politoMailClient)),1,null,null,null,null));
-
-//            Constraint3		send(politoMailClient, n_0, p, t_0) -> p.orig_body == p.body
-			constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(politoMailClient, n_0, p_0, t_0),
-                    		ctx.mkEq(nctx.pf.get("orig_body").apply(p_0),nctx.pf.get("body").apply(p_0))),1,null,null,null,null));
-
-//            Constraint4		recv(n_0, politoMailClient, p, t_0) -> nodeHasAddr(politoMailClient,p.dest)
-			constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.recv.apply(n_0,politoMailClient, p_0, t_0),
-                    		(BoolExpr)nctx.nodeHasAddr.apply(politoMailClient,nctx.pf.get("dest").apply(p_0))),1,null,null,null,null));
-
-//            Constraint5		This client is only able to produce POP3 requests
-//								send(politoMailClient, n_0, p, t_0) -> p.proto == POP3_REQ
-            constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(politoMailClient, n_0, p_0, t_0),
-                        ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.POP3_REQUEST))),1,null,null,null,null));
-
-//            Constraint6		send(politoMailClient, n_0, p, t_0) -> p.dest == ip_mailServer
-            constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(politoMailClient, n_0, p_0, t_0),
-                            ctx.mkEq(nctx.pf.get("dest").apply(p_0), ipServer)),1,null,null,null,null));
-		}
-}
diff --git a/verigraph/service/src/mcnet/netobjs/PolitoMailServer.java b/verigraph/service/src/mcnet/netobjs/PolitoMailServer.java
deleted file mode 100644
index c464195..0000000
--- a/verigraph/service/src/mcnet/netobjs/PolitoMailServer.java
+++ /dev/null
@@ -1,117 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2017 Politecnico di Torino and others.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Apache License, Version 2.0
- * which accompanies this distribution, and is available at
- * http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-
-package mcnet.netobjs;
-
-
-import java.util.ArrayList;
-import java.util.List;
-
-import com.microsoft.z3.BoolExpr;
-import com.microsoft.z3.Context;
-import com.microsoft.z3.DatatypeExpr;
-import com.microsoft.z3.Expr;
-import com.microsoft.z3.FuncDecl;
-import com.microsoft.z3.IntExpr;
-import com.microsoft.z3.Solver;
-
-import mcnet.components.NetContext;
-import mcnet.components.Network;
-import mcnet.components.NetworkObject;
-/** Mail server objects
- *
- */
-public class PolitoMailServer extends NetworkObject{
-
-		List<BoolExpr> constraints;
-		Context ctx;
-		DatatypeExpr politoMailServer;
-		Network net;
-		NetContext nctx;
-		FuncDecl isInBlacklist;
-
-		public PolitoMailServer(Context ctx, Object[]... args) {
-			super(ctx, args);
-		}
-
-		@Override
-		protected void init(Context ctx, Object[]... args) {
-			this.ctx = ctx;
-			isEndHost=false;
-	   		constraints = new ArrayList<BoolExpr>();
-	        z3Node = ((NetworkObject)args[0][0]).getZ3Node();
-	        politoMailServer = z3Node;
-	        net = (Network)args[0][1];
-	        nctx = (NetContext)args[0][2];
-	        mailServerRules();
-	        net.saneSend(this);
-	    }
-
-		@Override
-		public DatatypeExpr getZ3Node() {
-			return politoMailServer;
-		}
-
-		@Override
-		protected void addConstraints(Solver solver) {
-				BoolExpr[] constr = new BoolExpr[constraints.size()];
-			    solver.add(constraints.toArray(constr));
-		}
-
-	    private void mailServerRules (){
-	    	Expr n_0 = ctx.mkConst(politoMailServer+"_n_0", nctx.node);
-	    	Expr p_0 = ctx.mkConst(politoMailServer+"_p_0", nctx.packet);
-	    	Expr p_1 = ctx.mkConst(politoMailServer+"_p_1", nctx.packet);
-	    	IntExpr t_0 = ctx.mkIntConst(politoMailServer+"_t_0");
-	    	IntExpr t_1 = ctx.mkIntConst(politoMailServer+"_t_1");
-
-//            Constraint1		send(politoMailServer, n_0, p, t_0) -> nodeHasAddr(politoMailServer,p.src)
-	    	constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(politoMailServer, n_0, p_0, t_0),
-                    		(BoolExpr)nctx.nodeHasAddr.apply(politoMailServer,nctx.pf.get("src").apply(p_0))),1,null,null,null,null));
-
-//            Constraint2		send(politoMailServer, n_0, p, t_0) -> p.origin == politoMailServer
-	    	constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(politoMailServer, n_0, p_0, t_0),
-                    		ctx.mkEq(nctx.pf.get("origin").apply(p_0),politoMailServer)),1,null,null,null,null));
-
-//            Constraint3		send(politoMailServer, n_0, p, t_0) -> p.orig_body == p.body
-	    	constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(politoMailServer, n_0, p_0, t_0),
-                    		ctx.mkEq(nctx.pf.get("orig_body").apply(p_0),nctx.pf.get("body").apply(p_0))),1,null,null,null,null));
-
-//            Constraint4		recv(n_0, politoMailServer, p, t_0) -> nodeHasAddr(politoMailServer,p.dest)
-	    	constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.recv.apply(n_0,politoMailServer, p_0, t_0),
-                    		(BoolExpr)nctx.nodeHasAddr.apply(politoMailServer,nctx.pf.get("dest").apply(p_0))),1,null,null,null,null));
-
-//            Constraint5		send(politoMailServer, n_0, p, t_0) -> p.proto == POP3_RESP && p.emailFrom == 1
-	    	constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(politoMailServer, n_0, p_0, t_0),
-                       ctx.mkAnd(	ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.POP3_RESPONSE)),
-                    		   		ctx.mkEq(nctx.pf.get("emailFrom").apply(p_0), ctx.mkInt(1)))),1,null,null,null,null));
-
-//            Constraint6		send(politoMailServer, n_0, p, t_0)  ->
-//					    		(exist p_1, t_1 : (t_1 < t_0 && recv(n_0, politoMailServer, p_1, t_1) &&
-//	    						p_0.proto == POP3_RESP &&  p_1.proto == POP3_REQ && p_0.dest == p_1.src )
-
-	    	constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(politoMailServer, n_0, p_0, t_0),
-                        ctx.mkExists(new Expr[]{p_1, t_1},
-                            ctx.mkAnd(ctx.mkLt(t_1, t_0),
-                            		(BoolExpr)nctx.recv.apply(n_0, politoMailServer, p_1, t_1),
-                            		ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.POP3_RESPONSE)),
-                            		ctx.mkEq(nctx.pf.get("proto").apply(p_1), ctx.mkInt(nctx.POP3_REQUEST)),
-                            		ctx.mkEq(nctx.pf.get("dest").apply(p_0), nctx.pf.get("src").apply(p_1))),1,null,null,null,null)),1,null,null,null,null));
-
-//	    	constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-//                    ctx.mkImplies((BoolExpr)nctx.send.apply(politoMailServer, n_0, p_0, t_0),
-//                    		ctx.mkEq(nctx.pf.get("emailFrom").apply(p_0),ctx.mkInt(2))),1,null,null,null,null));
-	    }
-}
\ No newline at end of file
diff --git a/verigraph/service/src/mcnet/netobjs/PolitoNF.java b/verigraph/service/src/mcnet/netobjs/PolitoNF.java
deleted file mode 100644
index 53cae28..0000000
--- a/verigraph/service/src/mcnet/netobjs/PolitoNF.java
+++ /dev/null
@@ -1,101 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2017 Politecnico di Torino and others.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Apache License, Version 2.0
- * which accompanies this distribution, and is available at
- * http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-
-package mcnet.netobjs;
-
-
-import java.util.ArrayList;
-import java.util.List;
-
-import com.microsoft.z3.BoolExpr;
-import com.microsoft.z3.Context;
-import com.microsoft.z3.DatatypeExpr;
-import com.microsoft.z3.Expr;
-import com.microsoft.z3.FuncDecl;
-import com.microsoft.z3.IntExpr;
-import com.microsoft.z3.Solver;
-import com.microsoft.z3.Sort;
-
-import mcnet.components.NetContext;
-import mcnet.components.Network;
-import mcnet.components.NetworkObject;
-
-/** First example of custom network function: a simple filter
- *
- */
-public class PolitoNF extends NetworkObject{
-
-		List<BoolExpr> constraints;
-		Context ctx;
-		DatatypeExpr politoNF;
-		Network net;
-		NetContext nctx;
-		FuncDecl isInBlacklist;
-
-
-		public PolitoNF(Context ctx, Object[]... args) {
-			super(ctx, args);
-		}
-
-		@Override
-		protected void init(Context ctx, Object[]... args) {
-			this.ctx = ctx;
-			isEndHost=false;
-	   		constraints = new ArrayList<BoolExpr>();
-	        z3Node = ((NetworkObject)args[0][0]).getZ3Node();
-	        politoNF = z3Node;
-	        net = (Network)args[0][1];
-	        nctx = (NetContext)args[0][2];
-	        //net.saneSend(this);
-	    }
-
-	    public void politoNFRules (DatatypeExpr ipA,DatatypeExpr ipB){
-//	    	System.out.println("[PolitoNf] Installing rules");
-	    	Expr n_0 = ctx.mkConst("politoNF_"+politoNF+"_n_0", nctx.node);
-	    	Expr n_1 = ctx.mkConst("politoNF_"+politoNF+"_n_1", nctx.node);
-	    	Expr p_0 = ctx.mkConst("politoNF_"+politoNF+"_p_0", nctx.packet);
-	    	IntExpr t_0 = ctx.mkIntConst("politoNF_"+politoNF+"_t_0");
-	    	IntExpr t_1 = ctx.mkIntConst("politoNF_"+politoNF+"_t_1");
-	    	Expr a_0 = ctx.mkConst(politoNF+"_politoNF_a_0", nctx.address);
-	    	Expr a_1 = ctx.mkConst(politoNF+"_politoNF_a_1", nctx.address);
-
-	    	FuncDecl myFunction = ctx.mkFuncDecl(politoNF+"_myFunction", new Sort[]{nctx.address,nctx.address}, ctx.mkBoolSort());
-
-	    	BoolExpr myConstraint = ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-	    			 ctx.mkImplies((BoolExpr)nctx.send.apply(politoNF, n_0, p_0, t_0),
-	    					 ctx.mkExists(new Expr[]{n_1, t_1},
-	    							 ctx.mkAnd((BoolExpr)nctx.recv.apply(n_1, politoNF, p_0, t_1),
-	    									 	ctx.mkLt(t_1 , t_0),
-	    									 	(BoolExpr)myFunction.apply(nctx.pf.get("src").apply(p_0), nctx.pf.get("dest").apply(p_0))),1,null,null,null,null)),1,null,null,null,null);
-
-	    	BoolExpr funcConstraint = ctx.mkOr(ctx.mkAnd(ctx.mkEq(a_0, ipA), ctx.mkEq(a_1, ipB)), ctx.mkAnd(ctx.mkEq(a_0,ipB), ctx.mkEq(a_1,ipA)));
-
-	    	// Constraint1		myFunction(a_0,a_1) == ((a_0 == ipA && a_1 == ipB) || (a_0 == ipB && a_1 == ipA))
-			 constraints.add(
-					 ctx.mkForall(new Expr[]{a_0,a_1},
-							 ctx.mkEq(myFunction.apply(a_0, a_1), funcConstraint),1,null,null,null,null));
-
-			//Constraint2		send(politoNF, n_0, p, t_0)  ->
-			 //					(exist n_1,t_1 : (t_1 < t_0 && recv(n_1, politoNF, p, t_1) && myFunction(p.src,p.dest))
-			 constraints.add(myConstraint);
-
-	    }
-
-	    @Override
-		protected void addConstraints(Solver solver) {
-				BoolExpr[] constr = new BoolExpr[constraints.size()];
-			    solver.add(constraints.toArray(constr));
-		}
-
-	    @Override
-		public DatatypeExpr getZ3Node() {
-			return politoNF;
-		}
-
-	}
\ No newline at end of file
diff --git a/verigraph/service/src/mcnet/netobjs/PolitoNat.java b/verigraph/service/src/mcnet/netobjs/PolitoNat.java
deleted file mode 100644
index 6d8a36d..0000000
--- a/verigraph/service/src/mcnet/netobjs/PolitoNat.java
+++ /dev/null
@@ -1,176 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2017 Politecnico di Torino and others.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Apache License, Version 2.0
- * which accompanies this distribution, and is available at
- * http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-
-package mcnet.netobjs;
-
-
-import java.util.ArrayList;
-import java.util.List;
-
-import com.microsoft.z3.BoolExpr;
-import com.microsoft.z3.Context;
-import com.microsoft.z3.DatatypeExpr;
-import com.microsoft.z3.Expr;
-import com.microsoft.z3.FuncDecl;
-import com.microsoft.z3.IntExpr;
-import com.microsoft.z3.Solver;
-
-import mcnet.components.NetContext;
-import mcnet.components.Network;
-import mcnet.components.NetworkObject;
-/**
- * NAT Model object
- *
- */
-public class PolitoNat extends NetworkObject{
-	List<BoolExpr> constraints;
-	Context ctx;
-	DatatypeExpr nat;
-	List<DatatypeExpr> private_addresses;
-	List<NetworkObject> private_node;
-	Network net;
-	NetContext nctx;
-	FuncDecl private_addr_func ;
-
-	public PolitoNat(Context ctx, Object[]... args) {
-		super(ctx, args);
-	}
-
-	@Override
-	protected void init(Context ctx, Object[]... args) {
-		this.ctx = ctx;
-		isEndHost=false;
-   		constraints = new ArrayList<BoolExpr>();
-        z3Node = ((NetworkObject)args[0][0]).getZ3Node();
-        nat = z3Node;
-        net = (Network)args[0][1];
-        nctx = (NetContext)args[0][2];
-        private_addresses = new ArrayList<DatatypeExpr>();
-        private_node = new ArrayList<NetworkObject>();
-        net.saneSend(this);
-    }
-
-	@Override
-	public DatatypeExpr getZ3Node() {
-		return nat;
-	}
-
-	@Override
-	protected void addConstraints(Solver solver) {
-			BoolExpr[] constr = new BoolExpr[constraints.size()];
-		    solver.add(constraints.toArray(constr));
-	}
-
-	/*
-	private void addPrivateAdd(List<DatatypeExpr> address){
-		private_addresses.addAll(address);
-	}
-	*/
-
-	public List<DatatypeExpr> getPrivateAddress(){
-		return private_addresses;
-	}
-
-    public void natModel(DatatypeExpr natIp){
-    	Expr x = ctx.mkConst("x", nctx.node);
-    	Expr y = ctx.mkConst("y", nctx.node);
-    	Expr z = ctx.mkConst("z", nctx.node);
-
-    	Expr p_0 = ctx.mkConst("p_0", nctx.packet);
-    	Expr p_1 = ctx.mkConst("p_1", nctx.packet);
-    	Expr p_2 = ctx.mkConst("p_2", nctx.packet);
-
-    	IntExpr t_0 = ctx.mkIntConst("t_0");
-    	IntExpr t_1 = ctx.mkIntConst("t_1");
-    	IntExpr t_2 = ctx.mkIntConst("t_2");
-
-//    	private_addr_func = ctx.mkFuncDecl("private_addr_func", nctx.address, ctx.mkBoolSort());
-    	private_addr_func = ctx.mkFuncDecl(nat + "_nat_func", nctx.address, ctx.mkBoolSort());
-
-    	//Constraint1
-//    	"send(nat, x, p_0, t_0) && !private_addr_func(p_0.dest) ->
-//    	p_0.src == ip_politoNat &&
-//    	(exist y, p_1,t_1 :
-//    	   (recv(y, nat, p_1, t_1) && t_1 < t_0 &&
-//    	    private_addr_func(p1.src) &&
-//    	    p_1.origin == p_0.origin &&
-//    	    same for p_1.<dest,orig_body,body,seq,proto,emailFrom,url,options> == p_0.<...>) "
-    	constraints.add( ctx.mkForall(new Expr[]{t_0, p_0, x},
-    		ctx.mkImplies(
-    				ctx.mkAnd((BoolExpr)nctx.send.apply(nat, x, p_0, t_0),
-    						ctx.mkNot((BoolExpr)private_addr_func.apply(nctx.pf.get("dest").apply(p_0)))),
-    				ctx.mkAnd(
-    						ctx.mkEq(nctx.pf.get("src").apply(p_0),natIp),
-    						ctx.mkExists(new Expr[]{y, p_1, t_1},
-    								ctx.mkAnd(
-    									(BoolExpr)nctx.recv.apply(y, nat, p_1, t_1),
-    									ctx.mkLt(t_1 , t_0),
-    									(BoolExpr)private_addr_func.apply(nctx.pf.get("src").apply(p_1)),
-    									ctx.mkEq(nctx.pf.get("origin").apply(p_1),nctx.pf.get("origin").apply(p_0)),
-    									ctx.mkEq(nctx.pf.get("dest").apply(p_1),nctx.pf.get("dest").apply(p_0)),
-    									ctx.mkEq(nctx.pf.get("orig_body").apply(p_1),nctx.pf.get("orig_body").apply(p_0)),
-    									ctx.mkEq(nctx.pf.get("body").apply(p_1),nctx.pf.get("body").apply(p_0)),
-    									ctx.mkEq(nctx.pf.get("seq").apply(p_1),nctx.pf.get("seq").apply(p_0)),
-    									ctx.mkEq(nctx.pf.get("proto").apply(p_1),nctx.pf.get("proto").apply(p_0)),
-    									ctx.mkEq(nctx.pf.get("emailFrom").apply(p_1),nctx.pf.get("emailFrom").apply(p_0)),
-    									ctx.mkEq(nctx.pf.get("url").apply(p_1),nctx.pf.get("url").apply(p_0)),
-    									ctx.mkEq(nctx.pf.get("options").apply(p_1),nctx.pf.get("options").apply(p_0))),1,null,null,null,null))),1,null,null,null,null));
-
-    	//Constraint2
-//    	send(nat, x, p_0, t_0) && private_addr_func(p_0.dest) ->
-//    	!private_addr_func(p_0.src) &&
-//    	(exist y, p_1,t_1 :
-//    	  (recv(y, nat, p_1, t_1) && t_1 < t_0 &&
-//    	   !private_addr_func(p1.src) &&
-//    	   p_1.dest == ip_politoNat &&
-//    	   p_1.origin == p_0.origin &&
-//    	   same for p_1.<src,orig_body,body,seq,proto,emailFrom,url,options> == p_0.<...>)
-    	constraints.add( ctx.mkForall(new Expr[]{x, p_0, t_0},
-    			ctx.mkImplies(
-    				ctx.mkAnd((BoolExpr)nctx.send.apply(nat, x, p_0, t_0),
-    					(BoolExpr)private_addr_func.apply(nctx.pf.get("dest").apply(p_0))),
-    					ctx.mkAnd(
-    						ctx.mkNot((BoolExpr)private_addr_func.apply(nctx.pf.get("src").apply(p_0))),
-    						ctx.mkExists(new Expr[]{y, p_1, t_1},
-    							ctx.mkAnd(
-    									ctx.mkLt(t_1 , t_0),
-    									(BoolExpr)nctx.recv.apply(y, nat, p_1, t_1),
-    									ctx.mkNot((BoolExpr)private_addr_func.apply(nctx.pf.get("src").apply(p_1))),
-    									ctx.mkEq(nctx.pf.get("dest").apply(p_1),natIp),
-    									ctx.mkEq(nctx.pf.get("src").apply(p_1),nctx.pf.get("src").apply(p_0)),
-    									ctx.mkEq(nctx.pf.get("origin").apply(p_0),nctx.pf.get("origin").apply(p_1)),
-    									ctx.mkEq(nctx.pf.get("orig_body").apply(p_1),nctx.pf.get("orig_body").apply(p_0)),
-    									ctx.mkEq(nctx.pf.get("body").apply(p_1),nctx.pf.get("body").apply(p_0)),
-    									ctx.mkEq(nctx.pf.get("seq").apply(p_1),nctx.pf.get("seq").apply(p_0)),
-    									ctx.mkEq(nctx.pf.get("proto").apply(p_1),nctx.pf.get("proto").apply(p_0)),
-    									ctx.mkEq(nctx.pf.get("emailFrom").apply(p_1),nctx.pf.get("emailFrom").apply(p_0)),
-    									ctx.mkEq(nctx.pf.get("url").apply(p_1),nctx.pf.get("url").apply(p_0)),
-    									ctx.mkEq(nctx.pf.get("options").apply(p_1),nctx.pf.get("options").apply(p_0)),
-    									ctx.mkExists(new Expr[]{z, p_2, t_2},
-    										ctx.mkAnd(
-    												ctx.mkLt(t_2 , t_1),
-    												(BoolExpr)nctx.recv.apply(z, nat, p_2, t_2),
-    												(BoolExpr)private_addr_func.apply(nctx.pf.get("src").apply(p_2)),
-    												ctx.mkEq(nctx.pf.get("src").apply(p_1),nctx.pf.get("dest").apply(p_2)),
-    												ctx.mkEq(nctx.pf.get("src").apply(p_0),nctx.pf.get("dest").apply(p_2)),
-    												ctx.mkEq(nctx.pf.get("src").apply(p_2),nctx.pf.get("dest").apply(p_0))),1,null,null,null,null)),1,null,null,null,null))),1,null,null,null,null));
-    }
-
-    public void setInternalAddress(ArrayList<DatatypeExpr> internalAddress){
-    	List<BoolExpr> constr = new ArrayList<BoolExpr>();
-    	Expr n_0 = ctx.mkConst("nat_node", nctx.address);
-
-    	for(DatatypeExpr n : internalAddress){
-    		constr.add(ctx.mkEq(n_0,n));
-    	}
-    	BoolExpr[] constrs = new BoolExpr[constr.size()];
-    	//Constraint		private_addr_func(n_0) == or(n_0==n foreach internal address)
-    	constraints.add(ctx.mkForall(new Expr[]{n_0}, ctx.mkEq(private_addr_func.apply(n_0),ctx.mkOr(constr.toArray(constrs))),1,null,null,null,null));
-    }
-}
\ No newline at end of file
diff --git a/verigraph/service/src/mcnet/netobjs/PolitoVpnAccess.java b/verigraph/service/src/mcnet/netobjs/PolitoVpnAccess.java
deleted file mode 100644
index e6fc5fe..0000000
--- a/verigraph/service/src/mcnet/netobjs/PolitoVpnAccess.java
+++ /dev/null
@@ -1,142 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2017 Politecnico di Torino and others.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Apache License, Version 2.0
- * which accompanies this distribution, and is available at
- * http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-
-package mcnet.netobjs;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import com.microsoft.z3.BoolExpr;
-import com.microsoft.z3.Context;
-import com.microsoft.z3.DatatypeExpr;
-import com.microsoft.z3.Expr;
-import com.microsoft.z3.FuncDecl;
-import com.microsoft.z3.IntExpr;
-import com.microsoft.z3.Solver;
-
-import mcnet.components.NetContext;
-import mcnet.components.Network;
-import mcnet.components.NetworkObject;
-
-public class PolitoVpnAccess extends NetworkObject {
-
-	List<BoolExpr> constraints = new ArrayList<BoolExpr>();
-	DatatypeExpr politoVpnAccess;
-	FuncDecl private_addr_func;
-	NetContext nctx;
-	Context ctx;
-	Network net;
-
-	public PolitoVpnAccess(Context ctx, Object[]... args) {
-		super(ctx, args);
-	}
-
-	@Override
-	public DatatypeExpr getZ3Node() {
-		return politoVpnAccess;
-	}
-
-	@Override
-	protected void init(Context ctx, Object[]... args) {
-		this.ctx = ctx;
-		this.isEndHost = false;
-		this.politoVpnAccess = this.z3Node = ((NetworkObject)args[0][0]).getZ3Node();
-		this.net = (Network)args[0][1];
-        this.nctx = (NetContext)args[0][2];
-	}
-
-	@Override
-	protected void addConstraints(Solver solver) {
-		BoolExpr[] constr = new BoolExpr[constraints.size()];
-	    solver.add(constraints.toArray(constr));
-	}
-
-	public void vpnAccessModel(DatatypeExpr vpnAccessIp, DatatypeExpr vpnExitIp) {
-		Expr x = ctx.mkConst("vpn_x", nctx.node);
-		Expr y = ctx.mkConst("vpn_y", nctx.node);
-
-		Expr p_0 = ctx.mkConst("vpn_p_0", nctx.packet);
-		Expr p_1 = ctx.mkConst("vpn_p_1", nctx.packet);
-
-		IntExpr t_0 = ctx.mkIntConst("vpn_t_0");
-		IntExpr t_1 = ctx.mkIntConst("vpn_t_1");
-
-		private_addr_func = ctx.mkFuncDecl("vpn_private_addr_func", nctx.address, ctx.mkBoolSort());
-
-		BoolExpr constraint1 = ctx.mkForall(new Expr[]{t_0, p_0, x},
-				ctx.mkImplies(ctx.mkAnd(
-									  (BoolExpr)nctx.send.apply(politoVpnAccess, x, p_0, t_0),
-									  ctx.mkEq(nctx.pf.get("inner_src").apply(p_0), nctx.am.get("null"))),
-							  ctx.mkAnd(
-									  (BoolExpr)private_addr_func.apply(nctx.pf.get("dest").apply(p_0)),
-									  ctx.mkNot((BoolExpr)nctx.pf.get("encrypted").apply(p_0)),
-									  ctx.mkExists(new Expr[]{y, p_1, t_1},
-											  ctx.mkAnd((BoolExpr)nctx.recv.apply(y, politoVpnAccess, p_1, t_1),
-													    ctx.mkLt(t_1, t_0),
-													    (BoolExpr)nctx.pf.get("encrypted").apply(p_1),
-													    ctx.mkEq(nctx.pf.get("src").apply(p_1), vpnExitIp),
-													    ctx.mkEq(nctx.pf.get("dest").apply(p_1), vpnAccessIp),
-													    ctx.mkEq(nctx.pf.get("inner_src").apply(p_1), nctx.pf.get("src").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("inner_dest").apply(p_1), nctx.pf.get("dest").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("origin").apply(p_1), nctx.pf.get("origin").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("orig_body").apply(p_1), nctx.pf.get("orig_body").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("body").apply(p_1), nctx.pf.get("body").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("seq").apply(p_1), nctx.pf.get("seq").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("proto").apply(p_1), nctx.pf.get("proto").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("emailFrom").apply(p_1), nctx.pf.get("emailFrom").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("url").apply(p_1), nctx.pf.get("url").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("options").apply(p_1), nctx.pf.get("options").apply(p_0))), 1, null, null, null, null))),
-			1,null,null,null,null);
-
-		constraints.add(constraint1);
-
-		BoolExpr constraint2 = ctx.mkForall(new Expr[]{t_0, p_0, x},
-				ctx.mkImplies(ctx.mkAnd(
-									  (BoolExpr)nctx.send.apply(politoVpnAccess, x, p_0, t_0),
-									  ctx.mkNot(ctx.mkEq(nctx.pf.get("inner_src").apply(p_0), nctx.am.get("null")))),
-							  ctx.mkAnd(
-									  ctx.mkEq(nctx.pf.get("src").apply(p_0), vpnAccessIp),
-									  ctx.mkEq(nctx.pf.get("dest").apply(p_0), vpnExitIp),
-									  (BoolExpr)private_addr_func.apply(nctx.pf.get("inner_src").apply(p_0)),
-									  ctx.mkNot(ctx.mkEq(nctx.pf.get("inner_dest").apply(p_0), vpnAccessIp)),
-									  (BoolExpr)nctx.pf.get("encrypted").apply(p_0),
-									  ctx.mkExists(new Expr[]{y, p_1, t_1},
-											  ctx.mkAnd((BoolExpr)nctx.recv.apply(y, politoVpnAccess, p_1, t_1),
-													    ctx.mkLt(t_1, t_0),
-													    ctx.mkNot((BoolExpr)nctx.pf.get("encrypted").apply(p_1)),
-													    ctx.mkEq(nctx.pf.get("src").apply(p_1), nctx.pf.get("inner_src").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("dest").apply(p_1), nctx.pf.get("inner_dest").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("inner_src").apply(p_1), nctx.am.get("null")),
-													    ctx.mkEq(nctx.pf.get("inner_dest").apply(p_1), nctx.am.get("null")),
-													    ctx.mkEq(nctx.pf.get("origin").apply(p_1), nctx.pf.get("origin").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("orig_body").apply(p_1), nctx.pf.get("orig_body").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("body").apply(p_1), nctx.pf.get("body").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("seq").apply(p_1), nctx.pf.get("seq").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("proto").apply(p_1), nctx.pf.get("proto").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("emailFrom").apply(p_1), nctx.pf.get("emailFrom").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("url").apply(p_1), nctx.pf.get("url").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("options").apply(p_1), nctx.pf.get("options").apply(p_0))), 1, null, null, null, null))),
-				1,null,null,null,null);
-
-		constraints.add(constraint2);
-	}
-
-	public void setInternalAddress(ArrayList<DatatypeExpr> internalAddress){
-    	List<BoolExpr> constr = new ArrayList<BoolExpr>();
-    	Expr n_0 = ctx.mkConst("vpn_node", nctx.address);
-
-    	for(DatatypeExpr n : internalAddress){
-    		constr.add(ctx.mkEq(n_0,n));
-    	}
-    	BoolExpr[] constrs = new BoolExpr[constr.size()];
-    	//Constraint		private_addr_func(n_0) == or(n_0==n foreach internal address)
-    	constraints.add(ctx.mkForall(new Expr[]{n_0}, ctx.mkEq(private_addr_func.apply(n_0),ctx.mkOr(constr.toArray(constrs))),1,null,null,null,null));
-    }
-
-}
\ No newline at end of file
diff --git a/verigraph/service/src/mcnet/netobjs/PolitoVpnExit.java b/verigraph/service/src/mcnet/netobjs/PolitoVpnExit.java
deleted file mode 100644
index fb2341f..0000000
--- a/verigraph/service/src/mcnet/netobjs/PolitoVpnExit.java
+++ /dev/null
@@ -1,142 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2017 Politecnico di Torino and others.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Apache License, Version 2.0
- * which accompanies this distribution, and is available at
- * http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-
-package mcnet.netobjs;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import com.microsoft.z3.BoolExpr;
-import com.microsoft.z3.Context;
-import com.microsoft.z3.DatatypeExpr;
-import com.microsoft.z3.Expr;
-import com.microsoft.z3.FuncDecl;
-import com.microsoft.z3.IntExpr;
-import com.microsoft.z3.Solver;
-
-import mcnet.components.NetContext;
-import mcnet.components.Network;
-import mcnet.components.NetworkObject;
-
-public class PolitoVpnExit extends NetworkObject {
-
-	List<BoolExpr> constraints = new ArrayList<BoolExpr>();
-	DatatypeExpr politoVpnExit;
-	FuncDecl private_addr_func;
-	NetContext nctx;
-	Context ctx;
-	Network net;
-
-	public PolitoVpnExit(Context ctx, Object[]... args) {
-		super(ctx, args);
-	}
-
-	@Override
-	public DatatypeExpr getZ3Node() {
-		return politoVpnExit;
-	}
-
-	@Override
-	protected void init(Context ctx, Object[]... args) {
-		this.ctx = ctx;
-		this.isEndHost = false;
-		this.politoVpnExit = this.z3Node = ((NetworkObject)args[0][0]).getZ3Node();
-		this.net = (Network)args[0][1];
-        this.nctx = (NetContext)args[0][2];
-	}
-
-	@Override
-	protected void addConstraints(Solver solver) {
-		BoolExpr[] constr = new BoolExpr[constraints.size()];
-	    solver.add(constraints.toArray(constr));
-	}
-
-	public void vpnAccessModel(DatatypeExpr vpnAccessIp, DatatypeExpr vpnExitIp) {
-		Expr x = ctx.mkConst("vpn_x", nctx.node);
-		Expr y = ctx.mkConst("vpn_y", nctx.node);
-
-		Expr p_0 = ctx.mkConst("vpn_p_0", nctx.packet);
-		Expr p_1 = ctx.mkConst("vpn_p_1", nctx.packet);
-
-		IntExpr t_0 = ctx.mkIntConst("vpn_t_0");
-		IntExpr t_1 = ctx.mkIntConst("vpn_t_1");
-
-		private_addr_func = ctx.mkFuncDecl("vpn_private_addr_func", nctx.address, ctx.mkBoolSort());
-
-		BoolExpr constraint1 = ctx.mkForall(new Expr[]{t_0, p_0, x},
-				ctx.mkImplies(ctx.mkAnd(
-									  (BoolExpr)nctx.send.apply(politoVpnExit, x, p_0, t_0),
-									  ctx.mkEq(nctx.pf.get("inner_src").apply(p_0), nctx.am.get("null"))),
-							  ctx.mkAnd(
-									  (BoolExpr)private_addr_func.apply(nctx.pf.get("src").apply(p_0)),
-									  ctx.mkNot((BoolExpr)nctx.pf.get("encrypted").apply(p_0)),
-									  ctx.mkExists(new Expr[]{y, p_1, t_1},
-											  ctx.mkAnd((BoolExpr)nctx.recv.apply(y, politoVpnExit, p_1, t_1),
-													    ctx.mkLt(t_1, t_0),
-													    (BoolExpr)nctx.pf.get("encrypted").apply(p_1),
-													    ctx.mkEq(nctx.pf.get("src").apply(p_1), vpnAccessIp),
-													    ctx.mkEq(nctx.pf.get("dest").apply(p_1), vpnExitIp),
-													    ctx.mkEq(nctx.pf.get("inner_src").apply(p_1), nctx.pf.get("src").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("inner_dest").apply(p_1), nctx.pf.get("dest").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("origin").apply(p_1), nctx.pf.get("origin").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("orig_body").apply(p_1), nctx.pf.get("orig_body").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("body").apply(p_1), nctx.pf.get("body").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("seq").apply(p_1), nctx.pf.get("seq").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("proto").apply(p_1), nctx.pf.get("proto").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("emailFrom").apply(p_1), nctx.pf.get("emailFrom").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("url").apply(p_1), nctx.pf.get("url").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("options").apply(p_1), nctx.pf.get("options").apply(p_0))), 1, null, null, null, null))),
-			1,null,null,null,null);
-
-		constraints.add(constraint1);
-
-		BoolExpr constraint2 = ctx.mkForall(new Expr[]{t_0, p_0, x},
-				ctx.mkImplies(ctx.mkAnd(
-									  (BoolExpr)nctx.send.apply(politoVpnExit, x, p_0, t_0),
-									  ctx.mkNot(ctx.mkEq(nctx.pf.get("inner_src").apply(p_0), nctx.am.get("null")))),
-							  ctx.mkAnd(
-									  ctx.mkEq(nctx.pf.get("src").apply(p_0), vpnExitIp),
-									  ctx.mkEq(nctx.pf.get("dest").apply(p_0), vpnAccessIp),
-									  (BoolExpr)private_addr_func.apply(nctx.pf.get("dest").apply(p_0)),
-									  ctx.mkNot(ctx.mkEq(nctx.pf.get("inner_dest").apply(p_1), vpnExitIp)),
-									  (BoolExpr)nctx.pf.get("encrypted").apply(p_0),
-									  ctx.mkExists(new Expr[]{y, p_1, t_1},
-											  ctx.mkAnd((BoolExpr)nctx.recv.apply(y, politoVpnExit, p_1, t_1),
-													    ctx.mkLt(t_1, t_0),
-													    ctx.mkNot((BoolExpr)nctx.pf.get("encrypted").apply(p_1)),
-													    ctx.mkEq(nctx.pf.get("src").apply(p_1), nctx.pf.get("inner_src").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("dest").apply(p_1), nctx.pf.get("inner_dest").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("inner_src").apply(p_1), nctx.am.get("null")),
-													    ctx.mkEq(nctx.pf.get("inner_dest").apply(p_1), nctx.am.get("null")),
-													    ctx.mkEq(nctx.pf.get("origin").apply(p_1), nctx.pf.get("origin").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("orig_body").apply(p_1), nctx.pf.get("orig_body").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("body").apply(p_1), nctx.pf.get("body").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("seq").apply(p_1), nctx.pf.get("seq").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("proto").apply(p_1), nctx.pf.get("proto").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("emailFrom").apply(p_1), nctx.pf.get("emailFrom").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("url").apply(p_1), nctx.pf.get("url").apply(p_0)),
-													    ctx.mkEq(nctx.pf.get("options").apply(p_1), nctx.pf.get("options").apply(p_0))), 1, null, null, null, null))),
-				1,null,null,null,null);
-
-		constraints.add(constraint2);
-	}
-
-	public void setInternalAddress(ArrayList<DatatypeExpr> internalAddress){
-    	List<BoolExpr> constr = new ArrayList<BoolExpr>();
-    	Expr n_0 = ctx.mkConst("vpn_node", nctx.address);
-
-    	for(DatatypeExpr n : internalAddress){
-    		constr.add(ctx.mkEq(n_0,n));
-    	}
-    	BoolExpr[] constrs = new BoolExpr[constr.size()];
-    	//Constraint		private_addr_func(n_0) == or(n_0==n foreach internal address)
-    	constraints.add(ctx.mkForall(new Expr[]{n_0}, ctx.mkEq(private_addr_func.apply(n_0),ctx.mkOr(constr.toArray(constrs))),1,null,null,null,null));
-    }
-
-}
\ No newline at end of file
diff --git a/verigraph/service/src/mcnet/netobjs/PolitoWebClient.java b/verigraph/service/src/mcnet/netobjs/PolitoWebClient.java
deleted file mode 100644
index 28e2cf2..0000000
--- a/verigraph/service/src/mcnet/netobjs/PolitoWebClient.java
+++ /dev/null
@@ -1,107 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2017 Politecnico di Torino and others.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Apache License, Version 2.0
- * which accompanies this distribution, and is available at
- * http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-
-package mcnet.netobjs;
-
-
-import java.util.ArrayList;
-import java.util.List;
-
-import com.microsoft.z3.BoolExpr;
-import com.microsoft.z3.Context;
-import com.microsoft.z3.DatatypeExpr;
-import com.microsoft.z3.Expr;
-import com.microsoft.z3.FuncDecl;
-import com.microsoft.z3.IntExpr;
-import com.microsoft.z3.Solver;
-
-import mcnet.components.NetContext;
-import mcnet.components.Network;
-import mcnet.components.NetworkObject;
-
-/**
- * WebClient
- */
-public class PolitoWebClient extends NetworkObject{
-
-		List<BoolExpr> constraints;
-		Context ctx;
-		DatatypeExpr politoWebClient;
-		Network net;
-		NetContext nctx;
-		FuncDecl isInBlacklist;
-
-		public PolitoWebClient(Context ctx, Object[]... args) {
-			super(ctx, args);
-		}
-
-		@Override
-		protected void init(Context ctx, Object[]... args) {
-			this.ctx = ctx;
-		    isEndHost=true;
-	   		constraints = new ArrayList<BoolExpr>();
-			z3Node = ((NetworkObject)args[0][0]).getZ3Node();
-			politoWebClient = z3Node;
-			net = (Network)args[0][1];
-			nctx = (NetContext)args[0][2];
-			DatatypeExpr ipServer = (DatatypeExpr) args[0][3];
-			webClientRules(ipServer);
-			//net.saneSend(this);
-	    }
-
-		@Override
-		public DatatypeExpr getZ3Node() {
-			return politoWebClient;
-		}
-
-		@Override
-		protected void addConstraints(Solver solver) {
-//			System.out.println("[MailClient] Installing rules.");
-			BoolExpr[] constr = new BoolExpr[constraints.size()];
-			solver.add(constraints.toArray(constr));
-		}
-
-	    private void webClientRules (DatatypeExpr ipServer){
-	    	Expr n_0 = ctx.mkConst("PolitoWebClient_"+politoWebClient+"_n_0", nctx.node);
-	    	Expr p_0 = ctx.mkConst("PolitoWebClient_"+politoWebClient+"_p_0", nctx.packet);
-	    	IntExpr t_0 = ctx.mkIntConst("PolitoWebClient_"+politoWebClient+"_t_0");
-
-	    	//Constraint1		send(politoWebClient, n_0, p, t_0) -> nodeHasAddr(politoWebClient,p.src)
-			constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(politoWebClient, n_0, p_0, t_0),
-                    		(BoolExpr)nctx.nodeHasAddr.apply(politoWebClient,nctx.pf.get("src").apply(p_0))),1,null,null,null,null));
-
-			//Constraint2		send(politoWebClient, n_0, p, t_0) -> p.origin == politoWebClient
-			constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(politoWebClient, n_0, p_0, t_0),
-                    		ctx.mkEq(nctx.pf.get("origin").apply(p_0),politoWebClient)),1,null,null,null,null));
-
-			//Constraint3		send(politoWebClient, n_0, p, t_0) -> p.orig_body == p.body
-			constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(politoWebClient, n_0, p_0, t_0),
-                    		ctx.mkEq(nctx.pf.get("orig_body").apply(p_0),nctx.pf.get("body").apply(p_0))),1,null,null,null,null));
-
-			//Constraint4		recv(n_0, politoWebClient, p, t_0) -> nodeHasAddr(politoWebClient,p.dest)
-			constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.recv.apply(n_0,politoWebClient, p_0, t_0),
-                    		(BoolExpr)nctx.nodeHasAddr.apply(politoWebClient,nctx.pf.get("dest").apply(p_0))),1,null,null,null,null));
-
-
-			//Constraint5		This client is only able to produce HTTP requests
-			//					send(politoWebClient, n_0, p, t_0) -> p.proto == HTTP_REQ
-            constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(politoWebClient, n_0, p_0, t_0),
-                        ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.HTTP_REQUEST))),1,null,null,null,null));
-
-            //Constraint6		send(politoWebClient, n_0, p, t_0) -> p.dest == ipServer
-            constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(politoWebClient, n_0, p_0, t_0),
-                            ctx.mkEq(nctx.pf.get("dest").apply(p_0), ipServer)),1,null,null,null,null));
-	    }
-	}
diff --git a/verigraph/service/src/mcnet/netobjs/PolitoWebServer.java b/verigraph/service/src/mcnet/netobjs/PolitoWebServer.java
deleted file mode 100644
index 54710d9..0000000
--- a/verigraph/service/src/mcnet/netobjs/PolitoWebServer.java
+++ /dev/null
@@ -1,114 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2017 Politecnico di Torino and others.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Apache License, Version 2.0
- * which accompanies this distribution, and is available at
- * http://www.apache.org/licenses/LICENSE-2.0
- *******************************************************************************/
-
-package mcnet.netobjs;
-
-
-import java.util.ArrayList;
-import java.util.List;
-
-import com.microsoft.z3.BoolExpr;
-import com.microsoft.z3.Context;
-import com.microsoft.z3.DatatypeExpr;
-import com.microsoft.z3.Expr;
-import com.microsoft.z3.FuncDecl;
-import com.microsoft.z3.IntExpr;
-import com.microsoft.z3.Solver;
-
-import mcnet.components.NetContext;
-import mcnet.components.Network;
-import mcnet.components.NetworkObject;
-/**
- * WebServer object
- *
- */
-public class PolitoWebServer extends NetworkObject{
-
-		List<BoolExpr> constraints;
-		Context ctx;
-		DatatypeExpr node;
-		Network net;
-		NetContext nctx;
-		FuncDecl isInBlacklist;
-
-		public PolitoWebServer(Context ctx, Object[]... args) {
-			super(ctx, args);
-		}
-
-		@Override
-		protected void init(Context ctx, Object[]... args) {
-			this.ctx = ctx;
-		    isEndHost=true;
-	   		constraints = new ArrayList<BoolExpr>();
-	        z3Node = ((NetworkObject)args[0][0]).getZ3Node();
-	        node = z3Node;
-	        net = (Network)args[0][1];
-	        nctx = (NetContext)args[0][2];
-	        webServerRules();
-	    }
-
-		@Override
-		public DatatypeExpr getZ3Node() {
-			return node;
-		}
-
-		@Override
-		protected void addConstraints(Solver solver) {
-				BoolExpr[] constr = new BoolExpr[constraints.size()];
-			    solver.add(constraints.toArray(constr));
-		}
-
-	    private void webServerRules (){
-	    	Expr n_0 = ctx.mkConst("webserver_"+node+"_n_0", nctx.node);
-	    	Expr p_0 = ctx.mkConst("webserver_"+node+"_p_0", nctx.packet);
-	    	Expr p_1 = ctx.mkConst("webserver_"+node+"_p_1", nctx.packet);
-	    	IntExpr t_0 = ctx.mkIntConst("webserver_"+node+"_t_0");
-	    	IntExpr t_1 = ctx.mkIntConst("webserver_"+node+"_t_1");
-
-	    	//Constraint1		send(politoWebServer, n_0, p, t_0) -> nodeHasAddr(politoWebServer,p.src)
-	    	constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(node, n_0, p_0, t_0),
-                    		(BoolExpr)nctx.nodeHasAddr.apply(node,nctx.pf.get("src").apply(p_0))),1,null,null,null,null));
-
-	    	//Constraint2		send(politoWebServer, n_0, p, t_0) -> p.origin == politoWebServer
-	    	constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(node, n_0, p_0, t_0),
-                    		ctx.mkEq(nctx.pf.get("origin").apply(p_0),node)),1,null,null,null,null));
-
-	    	//Constraint3		send(politoWebServer, n_0, p, t_0) -> p.orig_body == p.body
-	    	constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(node, n_0, p_0, t_0),
-                    		ctx.mkEq(nctx.pf.get("orig_body").apply(p_0),nctx.pf.get("body").apply(p_0))),
-                    1,null,null,null,null));
-
-	    	//Constraint4		recv(n_0, politoWebServer, p, t_0) -> nodeHasAddr(politoWebServer,p.dest)
-	    	constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.recv.apply(n_0,node, p_0, t_0),
-                    		(BoolExpr)nctx.nodeHasAddr.apply(node,nctx.pf.get("dest").apply(p_0))),1,null,null,null,null));
-
-	    	//Constraint5
-			//	    			send(politoWebServer, n_0, p, t_0)  ->
-			//	    			(exist p_1,t_1 :
-			//	    	    		(t_1 < t_0 && recv(n_0, politoWebServer, p_1, t_1) &&
-			//	    	     		p_0.proto == HTTP_RESP &&  p_1.proto == HTTP_REQ &&
-			//	    	     		p_0.dest == p_1.src && p_0.src == p_1.dest &&  p_0.url == p_1.url)
-	    	constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
-                    ctx.mkImplies((BoolExpr)nctx.send.apply(node, n_0, p_0, t_0),
-                        ctx.mkExists(new Expr[]{p_1, t_1},
-                            ctx.mkAnd(
-                            		ctx.mkLt(t_1, t_0),
-                            		ctx.mkEq(nctx.pf.get("url").apply(p_0), nctx.pf.get("url").apply(p_1)),
-                            		(BoolExpr)nctx.recv.apply(n_0, node, p_1, t_1),
-                            		ctx.mkEq(nctx.pf.get("proto").apply(p_0), ctx.mkInt(nctx.HTTP_RESPONSE)),
-                            		ctx.mkEq(nctx.pf.get("proto").apply(p_1), ctx.mkInt(nctx.HTTP_REQUEST)),
-                            		ctx.mkEq(nctx.pf.get("dest").apply(p_0), nctx.pf.get("src").apply(p_1)),
-                            		ctx.mkEq(nctx.pf.get("src").apply(p_0), nctx.pf.get("dest").apply(p_1))),
-                            1,null,null,null,null)),1,null,null,null,null));
-	    }
-}