C# Z3Provider.MkTupleSort方法代码示例

        public Automaton<Expr> getAutomata(Z3Provider z3p, Expr universe, Expr var, Sort sort)
        {   //Sort for pairs (input theory, BV)
            var bv = z3p.Z3.MkBitVecSort(BVConst.BVSIZE);
            var pairSort = z3p.MkTupleSort(sort, bv);

            var dfapair = this.Normalize().PushQuantifiers().getAutomata(z3p, new List<string>(), universe, var, sort);            

            //Compute the new moves by dropping the last bit of every element in the phiMoves
            var newMoves = Automaton<Expr>.Empty.GetMoves().ToList();
            foreach (var oldMove in dfapair.GetMoves())
            {
                var oldCond = oldMove.Label;                             

                //Compute the new condition as ()
                Expr newCond = oldCond;
                

                //Update the new set of moves
                newMoves.Add(new Move<Expr>(oldMove.SourceState, oldMove.TargetState, newCond));
            }

            //Build the new dfa with the new moves
            var automaton = Automaton<Expr>.Create(dfapair.InitialState, dfapair.GetFinalStates(), newMoves);

            return automaton.Determinize(z3p).Minimize(z3p);
        }

 public void EmptyTupleTest()
 {
     Z3Provider Z = new Z3Provider();
     Sort sort = Z.MkTupleSort();
     Expr unit = Z.MkTuple();
     Expr t = Z.MkVar(0, sort);
     Expr t_eq_unit = Z.MkEq(t, unit);
     var v = new List<IValue<Expr>>(Z.MainSolver.FindAllMembers(t_eq_unit));
     Assert.IsTrue(v.Count == 1);
     Assert.AreEqual(unit, v[0].Value);
 }

        public void TestFastGeneration()
        {
            Z3Provider Z = new Z3Provider();

            Sort color = Z.MkEnumSort("Color", "blue", "green", "red");

            string enum_sort_name = color.Name.ToString();
            Assert.AreEqual<string>("Color", enum_sort_name);
            Assert.AreEqual<string>("green", Z.GetEnumElement("Color", "green").FuncDecl.Name.ToString());

            FuncDecl[] fields = new FuncDecl[5];
            FuncDecl mkTuple;
            Sort attrSort = Z.MkTupleSort("$", new string[] { "i", "b", "e", "s", "r" }, new Sort[] { Z.IntSort, Z.BoolSort, color, Z.StringSort, Z.RealSort }, out mkTuple, out fields);

            string tuple_sort_name = attrSort.Name.ToString();
            string tuple_contructor_name = mkTuple.Name.ToString();

            Assert.AreEqual<string>("$", tuple_sort_name);
            Assert.AreEqual<string>("$", tuple_contructor_name);

            Assert.AreEqual<string>("i", fields[0].Name.ToString());
            Assert.AreEqual<string>("b", fields[1].Name.ToString());
            Assert.AreEqual<string>("e", fields[2].Name.ToString());

            Assert.AreEqual<string>("Int", Z.GetRange(fields[0]).Name.ToString());
            Assert.AreEqual<string>("Bool", Z.GetRange(fields[1]).Name.ToString());
            Assert.AreEqual<string>("Color", Z.GetRange(fields[2]).Name.ToString());

            var A = (Z.TT.MkRankedAlphabet("A", attrSort, new string[] { "zero", "one", "two" }, new int[] { 0, 1, 2 }));

            Expr _i_plus_1 = Z.MkApp(mkTuple, Z.MkAdd(Z.MkProj(0, A.AttrVar), Z.MkInt(1)), Z.True,
                Z.MkIte(Z.MkGe(Z.MkProj(0, A.AttrVar), Z.MkInt(4)), Z.GetEnumElement("Color", "green"), Z.GetEnumElement("Color", "blue")), Z.MkProj(3, A.AttrVar), Z.MkAdd(Z.MkProj(4, A.AttrVar), Z.MkNumeral("9/3", Z.RealSort)));

            Expr _i_plus_1_foo = Z.MkApp(mkTuple, Z.MkAdd(Z.MkProj(0, A.AttrVar), Z.MkInt(1)), Z.True,
            Z.MkIte(Z.MkGe(Z.MkProj(0, A.AttrVar), Z.MkInt(4)), Z.GetEnumElement("Color", "green"), Z.GetEnumElement("Color", "blue")), Z.MkListFromString("foo", Z.CharacterSort), Z.MkNumeral("5.06", Z.RealSort));

            var proj = Z.GetTupleField(attrSort, 0);
            var proj_term = Z.MkApp(proj, _i_plus_1);

            var proj_term2 = Z.MkProj(0, _i_plus_1);

            var r1 = Z.TT.MkTreeRule(A, A, 0, "two", Z.MkGe(Z.MkProj(0, A.AttrVar), Z.MkInt(2)),
                A.MkTree("two", _i_plus_1, A.MkTree("one", _i_plus_1, A.MkTrans(A, 0, 1)),
                                           A.MkTree("two", _i_plus_1, A.MkTrans(A, 0, 2), A.MkTrans(A, 1, 2))));

            var r2 = Z.TT.MkTreeRule(A, A, 1, "two", Z.MkLe(Z.MkProj(0, A.AttrVar), Z.MkInt(5)),
               A.MkTree("two", _i_plus_1, A.MkTree("one", _i_plus_1, A.MkTrans(A, 0, 1)),
                                          A.MkTree("two", _i_plus_1, A.MkTrans(A, 0, 1), A.MkTrans(A, 1, 2))));

            var r3 = Z.TT.MkTreeRule(A, A, 1, "one", Z.True, A.MkTree("zero", _i_plus_1));

            var r4 = Z.TT.MkTreeRule(A, A, 0, "one", Z.True, A.MkTree("zero", _i_plus_1_foo));
            var r5 = Z.TT.MkTreeRule(A, A, 0, "zero", Z.True, A.MkTree("zero", _i_plus_1_foo));

            var T = Z.TT.MkTreeAutomaton(0, A, A, new TreeRule[] { r1, r2, r3, r4, r5 });

            var D = T.ComputeDomainAcceptor();

            var sb = new StringBuilder();
            var fastgen = new FastGen(Z);
            fastgen.ToFast(enum_sort_name, sb);
            fastgen.ToFast(A, sb);
            fastgen.ToFast("A", T, sb, false);
            fastgen.GetStateName = (x => "p_" + x);
            fastgen.ToFast("A", D, sb, true);

            Console.WriteLine(sb.ToString());
        }

        public void TestSTbSimplify()
        {
            string utf8decode_bek = @"
            function fuse(r,c) = ((r << 6) | (c & 0x3F));
            function one(c) = ((0 <= c) && (c <= 0x7F));
            function C2_DF(c) = ((0xC2 <= c) && (c <= 0xDF));
            function E1_EF(c) = ((0xE1 <= c) && (c <= 0xEF));
            function A0_BF(c) = ((0xA0 <= c) && (c <= 0xBF));
            function x80_BF(c) = ((0x80 <= c) && (c <= 0xBF));
            function x80_9F(c) = ((0x80 <= c) && (c <= 0x9F));
            program utf8decode(input){
              return iter(c in input)[q := 0; r := 0;]
              {
            case (q == 0):
              if (one(c))                  {yield (c);}
              else if (C2_DF(c))           {q := 2; r := (c & 0x1F);}    // ------ 2 bytes --------
              else if (c == 0xE0)          {q := 4; r := (c & 0x0F);}    // ------ 3 bytes --------
              else if (c == 0xED)          {q := 5; r := (c & 0x0F);}    // ------ 3 bytes --------
              else if (E1_EF(c))           {q := 3; r := (c & 0x0F);}    // ------ 3 bytes --------
              else {raise InvalidInput;}

            case (q == 2):
              if (x80_BF(c))                 {q := 0; yield(fuse(r,c)); r := 0;}
              else {raise InvalidInput;}

            case (q == 3):
              if (x80_BF(c))                 {q := 2; r := fuse(r,c);}
              else {raise InvalidInput;}

            case (q == 4):
              if (A0_BF(c))                  {q := 2; r := fuse(r,c);}
              else {raise InvalidInput;}

            case (q == 5):
              if (x80_9F(c))                 {q := 2; r := fuse(r,c);}
              else {raise InvalidInput;}

            end case (!(q == 0)):
              raise InvalidInput;
              };
            }
            ";

            Z3Provider solver = new Z3Provider(BitWidth.BV16);
            var dec = BekConverter.BekToSTb(solver, utf8decode_bek);
            var utf8decode = dec.ExploreBools();

            Sort bv32 = solver.MkBitVecSort(32);
            Sort outSort = solver.MkTupleSort(solver.StringSort, bv32);
            var initReg = solver.MkTuple(solver.GetNil(solver.StringSort), solver.MkNumeral(0,bv32));
            var regVar = solver.MkVar(1,outSort);
            var reg1 = solver.MkProj(1, regVar);
            var reg0 = solver.MkProj(0, regVar);
            STb<FuncDecl, Expr, Sort> parse = new STbModel(solver, "Parse", solver.CharacterSort, outSort, outSort, initReg, 0);

            var letter = solver.MkOr(//solver.MkAnd(solver.MkCharLe(solver.MkCharExpr('\xC0'), solver.CharVar),
                                     //                    solver.MkCharLe(solver.CharVar, solver.MkCharExpr('\xFF'))),
                                     solver.MkAnd(solver.MkCharLe(solver.MkCharExpr('a'), solver.CharVar),
                                                         solver.MkCharLe(solver.CharVar, solver.MkCharExpr('z'))),
                                     solver.MkAnd(solver.MkCharLe(solver.MkCharExpr('A'), solver.CharVar),
                                                         solver.MkCharLe(solver.CharVar, solver.MkCharExpr('Z'))));

            //var not_letter = solver.MkNot(letter);

            var digit = solver.MkAnd(solver.MkCharLe(solver.MkCharExpr('0'), solver.CharVar),
                                                         solver.MkCharLe(solver.CharVar, solver.MkCharExpr('9')));

            var nl = solver.MkEq(solver.CharVar, solver.MkCharExpr('\n'));

            var space = solver.MkEq(solver.CharVar, solver.MkCharExpr(' '));

            //var not_nl = solver.MkNot(nl);

            var _0 = solver.MkNumeral((int)'0', bv32);

            //var z = solver.Z3.MkFreshConst("z", solver.CharacterSort);

            //var constr = solver.MkNot(solver.Z3.MkExists(new Expr[] { z }, nl.Substitute(solver.CharVar, z)));
            ////var constr = nl.Substitute(solver.CharVar, z);

            //solver.Z3S.Push();
            //solver.Z3S.Assert((BoolExpr)solver.MkNot(constr));
            //var status = solver.Check();
            //var m = solver.Z3S.Model;
            //var zval = m.Evaluate(z, true);
            //solver.Z3S.Pop();

            var loop_0 = new BaseRule<Expr>(Sequence<Expr>.Empty, regVar, 0);
            var brule0_1 = new BaseRule<Expr>(Sequence<Expr>.Empty, solver.MkTuple(solver.MkListCons(solver.CharVar, reg0), reg1), 1);
            var rule0 = new IteRule<Expr>(letter, brule0_1, new IteRule<Expr>(space, loop_0, UndefRule<Expr>.Default));
            parse.AssignRule(0, rule0);

            var brule1_2 = new BaseRule<Expr>(Sequence<Expr>.Empty, solver.MkTuple(solver.MkListCons(solver.CharVar, reg0), reg1), 2);
            var brule_4 = new BaseRule<Expr>(Sequence<Expr>.Empty, regVar, 4);
            var rule1 = new IteRule<Expr>(letter, brule1_2, new IteRule<Expr>(space, brule_4, UndefRule<Expr>.Default));
            parse.AssignRule(1, rule1);

            var brule2_3 = new BaseRule<Expr>(Sequence<Expr>.Empty, solver.MkTuple(solver.MkListCons(solver.CharVar, reg0), reg1), 4);
            var rule2 = new IteRule<Expr>(letter, brule2_3, new IteRule<Expr>(space, brule_4, UndefRule<Expr>.Default));
            parse.AssignRule(2, rule2);
//.........这里部分代码省略.........

 public void TupleTest()
 {
     Z3Provider z3p = new Z3Provider();
     //create the tuple sort for mouth
     FuncDecl mouth;
     FuncDecl[] mouth_accessors;
     var MOUTH = z3p.MkTupleSort("MOUTH", new string[] { "open", "teeth" }, new Sort[] { z3p.BoolSort, z3p.IntSort }, out mouth, out mouth_accessors);
     Func<Expr,Expr,Expr> mk_mouth = ((o,t) => z3p.MkApp(mouth, o, t));
     Func<Expr,Expr> get_open = (m => z3p.MkApp(mouth_accessors[0], m));
     Func<Expr,Expr> get_teeth = (m => z3p.MkApp(mouth_accessors[1], m));
     //create the tuple sort for nose
     FuncDecl nose;
     FuncDecl[] nose_accessors;
     var NOSE = z3p.MkTupleSort("NOSE", new string[] { "size" }, new Sort[] { z3p.IntSort }, out nose, out nose_accessors);
     Func<Expr,Expr> mk_nose = (s => z3p.MkApp(nose, s));
     Func<Expr,Expr> get_size = (n => z3p.MkApp(nose_accessors[0], n));
     //create the tuple sort for head
     FuncDecl head;
     FuncDecl[] head_accessors;
     var HEAD = z3p.MkTupleSort("HEAD", new string[] { "bald", "nose", "mouth" }, new Sort[] { z3p.BoolSort, NOSE, MOUTH }, out head, out head_accessors);
     Func<Expr,Expr,Expr,Expr> mk_head = ((b,n,m) => z3p.MkApp(head, b,n,m));
     Func<Expr,Expr> get_bald = (h => z3p.MkApp(head_accessors[0], h));
     Func<Expr,Expr> get_nose = (h => z3p.MkApp(head_accessors[1], h));
     Func<Expr,Expr> get_mouth = (h => z3p.MkApp(head_accessors[2], h));
     //------------------------
     // create a transformation "punch" from HEAD tp HEAD that removes k teeth, k is  the second parameter of the transformation
     var punch = z3p.MkFuncDecl("punch", new Sort[]{HEAD, z3p.IntSort}, HEAD);
     var x = z3p.MkVar(0, HEAD);        // <-- this is the input HEAD
     var y = z3p.MkVar(1, z3p.IntSort); // <-- this is the n parameter
     //this is the actual transformation of x that removes one tooth
     var new_mouth = mk_mouth(get_open(get_mouth(x)), z3p.MkSub(get_teeth(get_mouth(x)), y));
     var old_nose = get_nose(x);
     var old_bald = get_bald(x);
     var punch_def = mk_head(old_bald, old_nose,new_mouth);
     var punch_axiom = z3p.MkEqForall(z3p.MkApp(punch, x , y), punch_def, x, y);
     Func<Expr,Expr,Expr> punch_app = ((h,k) => z3p.MkApp(punch, h,k));
     z3p.MainSolver.Assert(punch_axiom);
     //------------------------
     // create a transformation "hit" from HEAD tp HEAD that doubles the size of the nose
     var hit = z3p.MkFuncDecl("hit", HEAD, HEAD);
     var hit_def = mk_head(get_bald(x), mk_nose(z3p.MkMul(z3p.MkInt(2),get_size(get_nose(x)))), get_mouth(x));
     var hit_axiom = z3p.MkEqForall(z3p.MkApp(hit, x), hit_def, x);
     Func<Expr,Expr> hit_app = (h => z3p.MkApp(hit, h));
     z3p.MainSolver.Assert(hit_axiom);
     //-------------------------------
     // Analysis
     var H = z3p.MkConst("H", HEAD);
     var N = z3p.MkConst("N", z3p.IntSort);
     // check that hit and punch commute
     z3p.MainSolver.Push();
     z3p.MainSolver.Assert(z3p.MkNeq(punch_app(hit_app(H), N), hit_app(punch_app(H, N))));
     Status status = z3p.Check(); //here status must be UNSATISFIABLE
     z3p.MainSolver.Pop(); //remove the temporary context
     //check that hit is not idempotent
     z3p.MainSolver.Push();
     z3p.MainSolver.Assert(z3p.MkNeq(hit_app(hit_app(H)), hit_app(H)));
     status = z3p.Check(); //here status must not be UNSATISFIABLE (it is UNKNOWN due to use of axioms)
     var model1 = z3p.Z3S.Model;
     var witness1 = model1.Evaluate(H, true);   //a concrete instance of HEAD that shows when hitting twice is not the same as hitting once
     z3p.MainSolver.Pop();
     //but it is possible that hitting twice does no harm (when nose has size 0)
     z3p.MainSolver.Push();
     z3p.MainSolver.Assert(z3p.MkEq(hit_app(hit_app(H)), hit_app(H)));
     status = z3p.Check();
     var model2 = z3p.Z3S.Model;
     var witness2 = model2.Evaluate(H, true);
     z3p.MainSolver.Pop();
 }