8.5.2. Result Code

8.5.2.1. Result Code in C/C++

Result codes, or Error codes.

Result code	Result status	Description
0	MDO_OKAY	Nothing wrong.
-1	MDO_ERROR	Unspecified internal error.
-2	MDO_NOMEMORY	Insufficient memory.
-10	MDO_INVALID_LICENSE	License is not valid.
-11	MDO_HOME_ENV_NOT_FOUND	MINDOPT_HOME not exists.
-12	MDO_DLL_ERROR	Failed to load a dynamic library.
-1000	MDO_IO_ERROR	(I/O) General IO error.
-1001	MDO_FILE_READ_ERROR	(I/O) Failed to read data from file.
-1002	MDO_FILE_WRITE_ERROR	(I/O) Failed to write data to file.
-1003	MDO_DIRECTORY_ERROR	(I/O) Invalid directory.
-1100	MDO_FORMAT_ERROR	(I/O) Failed to parse the file.
-1101	MDO_VERSION_ERROR	(I/O) Failed to load model/parameter from file due to incompatiable version error.
-1200	MDO_REMOTE_INVALID_TOKEN	(I/O) The input token ID for the remote computing is not valid.
-1201	MDO_REMOTE_CONNECTION_ERROR	(I/O) Failed to connect to the remote computing server.
-2000	MDO_MODEL_INPUT_ERROR	Failed to input/load a model.
-2001	MDO_MODEL_EMPTY	Model is empty.
-2002	MDO_MODEL_INVALID_ROW_IDX	Row index is not valid.
-2003	MDO_MODEL_INVALID_COL_IDX	Column index is not valid.
-2004	MDO_MODEL_INVALID_ROW_NAME	Row name is not valid.
-2005	MDO_MODEL_INVALID_COL_NAME	Column name is not valid.
-2006	MDO_MODEL_INVALID_SYM_MAT_IDX	Index of the symmetric matrix is not valid.
-2007	MDO_MODEL_INVALID_SYM_MAT_ROW_IDX	Row index of a symmetric matrix is not valid.
-2008	MDO_MODEL_INVALID_SYM_MAT_COL_IDX	Column index of a symmetric matrix is not valid.
-2010	MDO_MODEL_INVALID_STR_ATTR	A string attribute was not recognized.
-2011	MDO_MODEL_INVALID_INT_ATTR	An integer attribute was not recognized.
-2012	MDO_MODEL_INVALID_REAL_ATTR	A real attribute was not recognized.
-2013	MDO_MODEL_INVALID_REAL_ATTR_SYM_MAT	A real attribute for symmetric matirx was not recognized.
-2014	MDO_MODEL_INVALID_CHAR_ATTR	A char attribute was not recognized.
-2019	MDO_MODEL_INVALID_ATTR_NAME	A name for attribute was not recognized.
-3000	MDO_NO_SOLN	Solution is not available.
-3001	MDO_NO_RAY	Unbounded ray is not available.
-3002	MDO_NO_STATISTICS	Solver statistics is not available.
-3003	MDO_INVALID_BASIS_STATUS	Unrecognized basis status.
-3004	MDO_IIS_NO_SOLN	No IIS available for the current model.
-3005	MDO_IIS_FEASIBLE	IIS is not available on a feasible model.
-4000	MDO_PARAM_SET_ERROR	Failed to change a parameter value.
-4001	MDO_PARAM_GET_ERROR	Failed to retrieve a parameter value.
-9000	MDO_ABORT_ITERATION_LIMIT	Iteration limit was reached in optimization.
-9001	MDO_ABORT_TIME_LIMIT	Time limit was reached in optimization.
-9002	MDO_ABORT_CTRL_C	Control-C command was captured in optimization.
-9003	MDO_ABORT_NODE_LIMIT	Node limit was reached in optimization.
-9004	MDO_ABORT_STALLING_NODE_LIMIT	Stalling node limit was reached in optimization.
-9011	MDO_ABORT_INVALID_METHOD	Selected optimization method is not supported.
-9012	MDO_ABORT_SOLVER_NOT_AVAILABLE	Optimization solver is not available for the input model.
-10000~-19999	MDO_SIMPLEX_NUMERIC	Numerical difficulties in Simplex algorithm.
-20000~-29999	MDO_INTERIOR_NUMERIC	Numerical difficulties in Interior-point algorithm.
-30000	MDO_IIS_NUMERIC	Numerical difficulties occurred while computing IIS.

8.5.2.2. Python

The error code of MindOpt Python SDK can be obtained in the following ways:

model = MdoModel()
try:

    # Input and solve the problem.
    ...
    model.solve_prob()

except MdoError as e:
    print("Received Mindopt exception.")
    print(" - Code          : {}".format(e.code))
    print(" - Reason        : {}".format(e.message))