/// <summary>
/// Computes an interpolant.
/// </summary>
/// <remarks>For more information on interpolation please refer
/// too the function Z3_get_interpolant in the C/C++ API, which is
/// well documented.</remarks>
public BoolExpr[] GetInterpolant(Expr pf, Expr pat, Params p)
{
Contract.Requires(pf != null);
Contract.Requires(pat != null);
Contract.Requires(p != null);
Contract.Ensures(Contract.Result<Expr>() != null);
CheckContextMatch(pf);
CheckContextMatch(pat);
CheckContextMatch(p);
ASTVector seq = new ASTVector(this, Native.Z3_get_interpolant(nCtx, pf.NativeObject, pat.NativeObject, p.NativeObject));
return seq.ToBoolExprArray();
}
/// <summary>
/// Computes an interpolant.
/// </summary>
/// <remarks>For more information on interpolation please refer
/// too the function Z3_compute_interpolant in the C/C++ API, which is
/// well documented.</remarks>
Z3_lbool ComputeInterpolant(Expr pat, Params p, out ASTVector interp, out Model model)
{
Contract.Requires(pat != null);
Contract.Requires(p != null);
Contract.Ensures(Contract.ValueAtReturn(out interp) != null);
Contract.Ensures(Contract.ValueAtReturn(out model) != null);
CheckContextMatch(pat);
CheckContextMatch(p);
IntPtr i = IntPtr.Zero, m = IntPtr.Zero;
int r = Native.Z3_compute_interpolant(nCtx, pat.NativeObject, p.NativeObject, ref i, ref m);
interp = new ASTVector(this, i);
model = new Model(this, m);
return (Z3_lbool)r;
}
/// <summary>
/// Computes an interpolant.
/// </summary>
/// <remarks>For more information on interpolation please refer
/// too the function Z3_get_interpolant in the C/C++ API, which is
/// well documented.</remarks>
Expr[] GetInterpolant(Expr pf, Expr pat, Params p)
{
Contract.Requires(pf != null);
Contract.Requires(pat != null);
Contract.Requires(p != null);
Contract.Ensures(Contract.Result<Expr>() != null);
CheckContextMatch(pf);
CheckContextMatch(pat);
CheckContextMatch(p);
ASTVector seq = new ASTVector(this, Native.Z3_get_interpolant(nCtx, pf.NativeObject, pat.NativeObject, p.NativeObject));
uint n = seq.Size;
Expr[] res = new Expr[n];
for (uint i = 0; i < n; i++)
res[i] = Expr.Create(this, seq[i].NativeObject);
return res;
}
/// <summary>
/// Retrieve fixed assignments to the set of variables in the form of consequences.
/// Each consequence is an implication of the form
///
/// relevant-assumptions Implies variable = value
///
/// where the relevant assumptions is a subset of the assumptions that are passed in
/// and the equality on the right side of the implication indicates how a variable
/// is fixed.
/// </summary>
/// <remarks>
/// <seealso cref="Model"/>
/// <seealso cref="UnsatCore"/>
/// <seealso cref="Proof"/>
/// </remarks>
public Status Consequences(IEnumerable <BoolExpr> assumptions, IEnumerable <Expr> variables, out BoolExpr[] consequences)
{
ASTVector result = new ASTVector(Context);
ASTVector asms = new ASTVector(Context);
ASTVector vars = new ASTVector(Context);
foreach (var asm in assumptions)
{
asms.Push(asm);
}
foreach (var v in variables)
{
vars.Push(v);
}
Z3_lbool r = (Z3_lbool)Native.Z3_solver_get_consequences(Context.nCtx, NativeObject, asms.NativeObject, vars.NativeObject, result.NativeObject);
consequences = result.ToBoolExprArray();
return(lboolToStatus(r));
}
/// <summary>
/// Computes an interpolant.
/// </summary>
/// <remarks>For more information on interpolation please refer
/// too the function Z3_get_interpolant in the C/C++ API, which is
/// well documented.</remarks>
Expr[] GetInterpolant(Expr pf, Expr pat, Params p)
{
Contract.Requires(pf != null);
Contract.Requires(pat != null);
Contract.Requires(p != null);
Contract.Ensures(Contract.Result <Expr>() != null);
CheckContextMatch(pf);
CheckContextMatch(pat);
CheckContextMatch(p);
ASTVector seq = new ASTVector(this, Native.Z3_get_interpolant(nCtx, pf.NativeObject, pat.NativeObject, p.NativeObject));
uint n = seq.Size;
Expr[] res = new Expr[n];
for (uint i = 0; i < n; i++)
{
res[i] = Expr.Create(this, seq[i].NativeObject);
}
return(res);
}
/// <summary>
/// The finite set of distinct values that represent the interpretation for sort <paramref name="s"/>.
/// </summary>
/// <seealso cref="Sorts"/>
/// <param name="s">An uninterpreted sort</param>
/// <returns>An array of expressions, where each is an element of the universe of <paramref name="s"/></returns>
public Expr[] SortUniverse(Sort s)
{
Contract.Requires(s != null);
Contract.Ensures(Contract.Result<Expr[]>() != null);
ASTVector nUniv = new ASTVector(Context, Native.Z3_model_get_sort_universe(Context.nCtx, NativeObject, s.NativeObject));
uint n = nUniv.Size;
Expr[] res = new Expr[n];
for (uint i = 0; i < n; i++)
res[i] = Expr.Create(Context, nUniv[i].NativeObject);
return res;
}
/// <summary>
/// Retrieve fixed assignments to the set of variables in the form of consequences.
/// Each consequence is an implication of the form
///
/// relevant-assumptions Implies variable = value
///
/// where the relevant assumptions is a subset of the assumptions that are passed in
/// and the equality on the right side of the implication indicates how a variable
/// is fixed.
/// </summary>
/// <remarks>
/// <seealso cref="Model"/>
/// <seealso cref="UnsatCore"/>
/// <seealso cref="Proof"/>
/// </remarks>
public Status Consequences(IEnumerable<BoolExpr> assumptions, IEnumerable<Expr> variables, out BoolExpr[] consequences)
{
ASTVector result = new ASTVector(Context);
ASTVector asms = new ASTVector(Context);
ASTVector vars = new ASTVector(Context);
foreach (var asm in assumptions) asms.Push(asm);
foreach (var v in variables) vars.Push(v);
Z3_lbool r = (Z3_lbool)Native.Z3_solver_get_consequences(Context.nCtx, NativeObject, asms.NativeObject, vars.NativeObject, result.NativeObject);
consequences = result.ToBoolExprArray();
return lboolToStatus(r);
}
/// <summary>
/// Similar to ParseFile. Instead it takes as argument a string.
/// </summary>
public BoolExpr[] ParseString(string s)
{
ASTVector av = new ASTVector(Context, Native.Z3_fixedpoint_from_string(Context.nCtx, NativeObject, s));
return(av.ToBoolExprArray());
}
/// <summary>
/// Parse an SMT-LIB2 file with fixedpoint rules.
/// Add the rules to the current fixedpoint context.
/// Return the set of queries in the file.
/// </summary>
public BoolExpr[] ParseFile(string file)
{
ASTVector av = new ASTVector(Context, Native.Z3_fixedpoint_from_file(Context.nCtx, NativeObject, file));
return(av.ToBoolExprArray());
}
/// <summary>
/// Retrieve an upper bound for the objective handle.
/// </summary>
private Expr[] GetUpperAsVector(uint index)
{
using ASTVector v = new ASTVector(Context, Native.Z3_optimize_get_upper_as_vector(Context.nCtx, NativeObject, index));
return(v.ToExprArray());
}
BoolExpr[] ToBoolExprs(ASTVector v)
{
uint n = v.Size;
BoolExpr[] res = new BoolExpr[n];
for (uint i = 0; i < n; i++)
res[i] = new BoolExpr(Context, v[i].NativeObject);
return res;
}
/// <summary>
/// Retrieve a lower bound for the objective handle.
/// </summary>
private ArithExpr[] GetLowerAsVector(uint index)
{
ASTVector v = new ASTVector(Context, Native.Z3_optimize_get_lower_as_vector(Context.nCtx, NativeObject, index));
return(v.ToArithExprArray());
}
/// <summary>
/// Similar to ParseFile. Instead it takes as argument a string.
/// </summary>
public BoolExpr[] ParseString(string s)
{
ASTVector av = new ASTVector(Context, Native.Z3_fixedpoint_from_string(Context.nCtx, NativeObject, s));
return av.ToBoolExprArray();
}
/// <summary>
/// Parse an SMT-LIB2 file with fixedpoint rules.
/// Add the rules to the current fixedpoint context.
/// Return the set of queries in the file.
/// </summary>
public BoolExpr[] ParseFile(string file)
{
ASTVector av = new ASTVector(Context, Native.Z3_fixedpoint_from_file(Context.nCtx, NativeObject, file));
return av.ToBoolExprArray();
}
/// <summary>
/// The finite set of distinct values that represent the interpretation for sort <paramref name="s"/>.
/// </summary>
/// <seealso cref="Sorts"/>
/// <param name="s">An uninterpreted sort</param>
/// <returns>An array of expressions, where each is an element of the universe of <paramref name="s"/></returns>
public Expr[] SortUniverse(Sort s)
{
Contract.Requires(s != null);
Contract.Ensures(Contract.Result<Expr[]>() != null);
ASTVector av = new ASTVector(Context, Native.Z3_model_get_sort_universe(Context.nCtx, NativeObject, s.NativeObject));
return av.ToExprArray();
}