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expose models, working on network flow

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2013-12-04 17:39:54 -08:00
parent 686d146cc6
commit 56c4fa8f6d
9 changed files with 497 additions and 441 deletions
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18
src/api/api_opt.cpp
View file

@ -20,6 +20,7 @@ Revision History:
#include"api_log_macros.h"
#include"api_context.h"
#include"api_util.h"
#include"api_model.h"
#include"opt_context.h"
#include"cancel_eh.h"
#include"scoped_timer.h"
@ -122,6 +123,23 @@ extern "C" {
Z3_CATCH_RETURN(Z3_L_UNDEF);
}
Z3_model Z3_API Z3_optimize_get_model(Z3_context c, Z3_optimize o) {
Z3_TRY;
LOG_Z3_optimize_get_model(c, o);
RESET_ERROR_CODE();
model_ref _m;
to_optimize_ref(o).get_model(_m);
if (!_m) {
SET_ERROR_CODE(Z3_INVALID_USAGE);
RETURN_Z3(0);
}
Z3_model_ref * m_ref = alloc(Z3_model_ref);
m_ref->m_model = _m;
mk_c(c)->save_object(m_ref);
RETURN_Z3(of_model(m_ref));
Z3_CATCH_RETURN(0);
}
void Z3_API Z3_optimize_set_params(Z3_context c, Z3_optimize o, Z3_params p) {
Z3_TRY;
LOG_Z3_optimize_set_params(c, o, p);

20
src/api/dotnet/Optimize.cs
View file

@ -108,6 +108,26 @@ namespace Microsoft.Z3
default: return Status.UNKNOWN;
}
}
/// <summary>
/// The model of the last <c>Check</c>.
/// </summary>
/// <remarks>
/// The result is <c>null</c> if <c>Check</c> was not invoked before,
/// if its results was not <c>SATISFIABLE</c>, or if model production is not enabled.
/// </remarks>
public Model Model
{
get
{
IntPtr x = Native.Z3_optimize_get_model(Context.nCtx, NativeObject);
if (x == IntPtr.Zero)
return null;
else
return new Model(Context, x);
}
}
public void Maximize(ArithExpr e) {
Native.Z3_optimize_maximize(Context.nCtx, NativeObject, e.NativeObject);

11
src/api/z3_api.h
View file

@ -6021,6 +6021,17 @@ END_MLAPI_EXCLUDE
Z3_lbool Z3_API Z3_optimize_check(Z3_context c, Z3_optimize o);
/**
\brief Retrieve the model for the last #Z3_optimize_check
The error handler is invoked if a model is not available because
the commands above were not invoked for the given optimization
solver, or if the result was \c Z3_L_FALSE.
def_API('Z3_optimize_get_model', MODEL, (_in(CONTEXT), _in(OPTIMIZE)))
*/
Z3_model Z3_API Z3_optimize_get_model(Z3_context c, Z3_optimize o);
/**
\brief Set parameters on optimization context.