Initializing one-feature state causes freeze

[BaxterEaves]

Trying to initialize a one-feature crosscat state cause a freeze. The interactive python session below recreates this phenomenon.

>>> import crosscat.utils.data_utils as du
>>> import crosscat.cython_code.State as State
>>> n_rows = 20
>>> n_cols = 1
>>> n_clusters = 1
>>> n_splits = 1
>>> T, M_r, M_c = du.gen_factorial_data_objects(0, n_clusters, n_cols, n_rows, n_splits)
>>> T
[[-5.787782515779506], [-5.826566594944548], [-4.958365620785989], [-5.492487488802081], [-6.224880036852396], [-6.827562219103892], [-5.56692163658829], [-6.292623845594414], [-6.5554462707688455], [-7.177709985746689], [-6.642867927741707], [-7.009385232315293], [-5.2122421142029545], [-6.465641354565031], [-5.991088472905642], [-5.195031202572548], [-4.403616309173517], [-5.86833115423013], [-5.037314522029348], [-6.54195489382407]]
>>> M_r
{'idx_to_name': {'11': 11, '10': 10, '13': 13, '12': 12, '15': 15, '14': 14, '17': 17, '16': 16, '19': 19, '18': 18, '1': 1, '0': 0, '3': 3, '2': 2, '5': 5, '4': 4, '7': 7, '6': 6, '9': 9, '8': 8}, 'name_to_idx': {'11': 11, '10': 10, '13': 13, '12': 12, '15': 15, '14': 14, '17': 17, '16': 16, '19': 19, '18': 18, '1': 1, '0': 0, '3': 3, '2': 2, '5': 5, '4': 4, '7': 7, '6': 6, '9': 9, '8': 8}}
>>> M_c
{'idx_to_name': {'0': 0}, 'column_metadata': [{'code_to_value': {}, 'value_to_code': {}, 'modeltype': 'normal_inverse_gamma'}], 'name_to_idx': {0: 0}}
>>> state = State.p_State(M_c, T)

Then nothing happens.