Function SCIPgetNLPStatistics 

pub unsafe extern "C" fn SCIPgetNLPStatistics(
    scip: *mut SCIP,
    statistics: *mut SCIP_NLPSTATISTICS,
) -> SCIP_RETCODE

gives statistics (number of iterations, solving time, …) of last NLP solve

@return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref SCIP_Retcode “SCIP_RETCODE” for a complete list of error codes.

@pre This method can be called if SCIP is in one of the following stages: - \ref SCIP_STAGE_INITSOLVE - \ref SCIP_STAGE_SOLVING