1 /*******************************************************************************
2 * Copyright (c) 2017 Politecnico di Torino and others.
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Apache License, Version 2.0
6 * which accompanies this distribution, and is available at
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *******************************************************************************/
9 package it.polito.verigraph.mcnet.netobjs;
11 import java.util.ArrayList;
12 import java.util.List;
14 import com.microsoft.z3.BoolExpr;
15 import com.microsoft.z3.Context;
16 import com.microsoft.z3.DatatypeExpr;
17 import com.microsoft.z3.Expr;
18 import com.microsoft.z3.FuncDecl;
19 import com.microsoft.z3.IntExpr;
20 import com.microsoft.z3.Solver;
22 import it.polito.verigraph.mcnet.components.NetContext;
23 import it.polito.verigraph.mcnet.components.Network;
24 import it.polito.verigraph.mcnet.components.NetworkObject;
25 /**Error Function objects
29 public class PolitoErrFunction extends NetworkObject{
31 List<BoolExpr> constraints;
33 DatatypeExpr politoErrFunction;
36 FuncDecl isInBlacklist;
38 public PolitoErrFunction(Context ctx, Object[]... args) {
43 protected void init(Context ctx, Object[]... args) {
46 constraints = new ArrayList<BoolExpr>();
47 z3Node = ((NetworkObject)args[0][0]).getZ3Node();
48 politoErrFunction = z3Node;
49 net = (Network)args[0][1];
50 nctx = (NetContext)args[0][2];
56 public DatatypeExpr getZ3Node() {
57 return politoErrFunction;
61 protected void addConstraints(Solver solver) {
62 //System.out.println("[ERR FUNC] Installing rules.");
63 BoolExpr[] constr = new BoolExpr[constraints.size()];
64 solver.add(constraints.toArray(constr));
67 private void errFunctionRules (){
68 Expr n_0 = ctx.mkConst("PolitoErrFunction_"+politoErrFunction+"_n_0", nctx.node);
69 Expr p_0 = ctx.mkConst("PolitoErrFunction_"+politoErrFunction+"_p_0", nctx.packet);
70 IntExpr t_0 = ctx.mkIntConst("PolitoErrFunction_"+politoErrFunction+"_t_0");
72 // constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
73 // ctx.mkImplies((BoolExpr)nctx.send.apply(politoErrFunction, n_0, p_0, t_0),
74 // (BoolExpr)nctx.nodeHasAddr.apply(politoErrFunction, nctx.pf.get("src").apply(p_0))),1,null,null,null,null));
75 // constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
76 // ctx.mkImplies((BoolExpr)nctx.send.apply(politoErrFunction, n_0, p_0, t_0),
77 // ctx.mkEq(nctx.pf.get("origin").apply(p_0), politoErrFunction)),1,null,null,null,null));
79 // constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
80 // ctx.mkImplies((BoolExpr)nctx.send.apply(politoErrFunction, n_0, p_0, t_0),
81 // ctx.mkEq(nctx.pf.get("orig_body").apply(p_0),nctx.pf.get("body").apply(p_0))),1,null,null,null,null));
84 // Constraint1 We want the ErrFunction not to send out any packet
85 // send(politoErrFunction, n_0, p, t_0) -> 1 == 2
86 constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
87 ctx.mkImplies((BoolExpr)nctx.send.apply(politoErrFunction, n_0, p_0, t_0),
88 ctx.mkEq(ctx.mkInt(1),ctx.mkInt(2))),1,null,null,null,null));
90 // constraints.add( ctx.mkForall(new Expr[]{n_0, p_0, t_0},
91 // ctx.mkImplies((BoolExpr)nctx.send.apply(n_0, politoErrFunction, p_0, t_0),
92 // (BoolExpr)nctx.nodeHasAddr.apply(politoErrFunction, nctx.pf.get("dest").apply(p_0))),1,null,null,null,null));