s_xbt_swag_t variable_set; /* a list of lmm_variable_t */
s_xbt_swag_t active_constraint_set; /* a list of lmm_constraint_t */
s_xbt_swag_t saturated_variable_set; /* a list of lmm_variable_t */
s_xbt_swag_t variable_set; /* a list of lmm_variable_t */
s_xbt_swag_t active_constraint_set; /* a list of lmm_constraint_t */
s_xbt_swag_t saturated_variable_set; /* a list of lmm_variable_t */