Function SCIPfreeSolve 

pub unsafe extern "C" fn SCIPfreeSolve(
    scip: *mut SCIP,
    restart: c_uint,
) -> SCIP_RETCODE

frees branch and bound tree and all solution process data; statistics, presolving data and transformed problem is preserved

@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 @p scip is in one of the following stages: - \ref SCIP_STAGE_INIT - \ref SCIP_STAGE_PROBLEM - \ref SCIP_STAGE_TRANSFORMED - \ref SCIP_STAGE_PRESOLVING - \ref SCIP_STAGE_PRESOLVED - \ref SCIP_STAGE_SOLVING - \ref SCIP_STAGE_SOLVED

@post If this method is called in \SCIP stage \ref SCIP_STAGE_INIT or \ref SCIP_STAGE_PROBLEM, the stage of \SCIP is not changed; otherwise, the \SCIP stage is changed to \ref SCIP_STAGE_TRANSFORMED

See \ref SCIP_Stage “SCIP_STAGE” for a complete list of all possible solving stages.