bset = isl_basic_set_detect_equalities(bset);
isl_basic_set_print(bset, stdout, 0, "", "", ISL_FORMAT_POLYLIB);
isl_basic_set_free(bset);
bset = isl_basic_set_detect_equalities(bset);
isl_basic_set_print(bset, stdout, 0, "", "", ISL_FORMAT_POLYLIB);
isl_basic_set_free(bset);