/// <summary>
/// Returns a simplified version of the expression.
/// </summary>
/// <param name="p">A set of parameters to configure the simplifier</param>
/// <seealso cref="Context.SimplifyHelp"/>
public Expr Simplify(Params p = null)
{
Contract.Ensures(Contract.Result<Expr>() != null);
if (p == null)
return Expr.Create(Context, Native.Z3_simplify(Context.nCtx, NativeObject));
else
return Expr.Create(Context, Native.Z3_simplify_ex(Context.nCtx, NativeObject, p.NativeObject));
}
/// <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>
/// Execute the tactic over the goal.
/// </summary>
public ApplyResult Apply(Goal g, Params p = null)
{
Contract.Requires(g != null);
Contract.Ensures(Contract.Result<ApplyResult>() != null);
Context.CheckContextMatch(g);
if (p == null)
return new ApplyResult(Context, Native.Z3_tactic_apply(Context.nCtx, NativeObject, g.NativeObject));
else
{
Context.CheckContextMatch(p);
return new ApplyResult(Context, Native.Z3_tactic_apply_ex(Context.nCtx, NativeObject, g.NativeObject, p.NativeObject));
}
}
/// <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>
public Z3_lbool ComputeInterpolant(Expr pat, Params p, out BoolExpr[] 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).ToBoolExprArray();
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>
/// Create a tactic that applies <paramref name="t"/> using the given set of parameters <paramref name="p"/>.
/// </summary>
/// <remarks>Alias for <c>UsingParams</c></remarks>
public Tactic With(Tactic t, Params p)
{
Contract.Requires(t != null);
Contract.Requires(p != null);
Contract.Ensures(Contract.Result<Tactic>() != null);
return UsingParams(t, p);
}
/// <summary>
/// Create a tactic that applies <paramref name="t"/> using the given set of parameters <paramref name="p"/>.
/// </summary>
public Tactic UsingParams(Tactic t, Params p)
{
Contract.Requires(t != null);
Contract.Requires(p != null);
Contract.Ensures(Contract.Result<Tactic>() != null);
CheckContextMatch(t);
CheckContextMatch(p);
return new Tactic(this, Native.Z3_tactic_using_params(nCtx, t.NativeObject, p.NativeObject));
}
/// <summary>
/// validate a set of parameters.
/// </summary>
public void Validate(Params p)
{
Contract.Requires(p != null);
Native.Z3_params_validate(Context.nCtx, p.NativeObject, NativeObject);
}
/// <summary>
/// Simplifies the goal.
/// </summary>
/// <remarks>Essentially invokes the `simplify' tactic on the goal.</remarks>
public Goal Simplify(Params p = null)
{
Tactic t = Context.MkTactic("simplify");
ApplyResult res = t.Apply(this, p);
if (res.NumSubgoals == 0)
return Context.MkGoal();
else
return res.Subgoals[0];
}
/// <summary>
/// Simplifies the goal.
/// </summary>
/// <remarks>Essentially invokes the `simplify' tactic on the goal.</remarks>
public Goal Simplify(Params p = null)
{
Tactic t = Context.MkTactic("simplify");
ApplyResult res = t.Apply(this, p);
if (res.NumSubgoals == 0)
throw new Z3Exception("No subgoals");
else
return res.Subgoals[0];
}