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fix bugs in incremental operation of sat solver

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2014-09-27 12:04:54 -07:00
parent caa35f6270
commit 08dcd51594
10 changed files with 84 additions and 58 deletions
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32
src/api/dotnet/Optimize.cs
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@ -97,8 +97,16 @@ namespace Microsoft.Z3
Symbol s = Context.MkSymbol(group);
return Native.Z3_optimize_assert_soft(Context.nCtx, NativeObject, constraint.NativeObject, weight.ToString(), s.NativeObject);
}
public Status Check() {
///
/// <summary>
/// Check satisfiability of asserted constraints.
/// Produce a model that (when the objectives are bounded and
/// don't use strict inequalities) meets the objectives.
/// </summary>
///
public Status Check() {
Z3_lbool r = (Z3_lbool)Native.Z3_optimize_check(Context.nCtx, NativeObject);
switch (r)
{
@ -149,27 +157,47 @@ namespace Microsoft.Z3
return new Model(Context, x);
}
}
/// <summary>
/// Declare an arithmetical maximization objective.
/// Return a handle to the objective. The handle is used as
/// an argument to GetLower and GetUpper.
/// </summary>
public uint MkMaximize(ArithExpr e)
{
return Native.Z3_optimize_maximize(Context.nCtx, NativeObject, e.NativeObject);
}
/// <summary>
/// Declare an arithmetical minimization objective.
/// Similar to MkMaximize.
/// </summary>
public uint MkMinimize(ArithExpr e)
{
return Native.Z3_optimize_minimize(Context.nCtx, NativeObject, e.NativeObject);
}
/// <summary>
/// Retrieve a lower bound for the objective handle.
/// </summary>
public ArithExpr GetLower(uint index)
{
return (ArithExpr)Expr.Create(Context, Native.Z3_optimize_get_lower(Context.nCtx, NativeObject, index));
}
/// <summary>
/// Retrieve an upper bound for the objective handle.
/// </summary>
public ArithExpr GetUpper(uint index)
{
return (ArithExpr)Expr.Create(Context, Native.Z3_optimize_get_upper(Context.nCtx, NativeObject, index));
}
/// <summary>
/// Print the context to a string (SMT-LIB parseable benchmark).
/// </summary>
public override string ToString()
{
return Native.Z3_optimize_to_string(Context.nCtx, NativeObject);