N=4 K=3 MAXMULT=1: instances with all sets convex: 269584 (disagreements: 0); instances with a non-convex set: 113392
non-convex instances by (PC, LOC, ARB):
    (False, False, False) 110019
    (False, True, False) 5
    (True, False, False) 1538
    (True, True, False) 1
    (True, True, True) 1829
first example of [PC and not ARB]: {'arcs': [(1, 2), (2, 3)], 'roots': (0, 0, 1), 'sets': [[0], [0], [1, 3]], 'convex': [True, True, False]}
first example of [LOC and not ARB]: {'arcs': [(0, 1), (1, 2), (1, 3), (2, 3)], 'roots': (0, 1, 0), 'sets': [[0], [1, 3], [0, 1, 2, 3]], 'convex': [True, False, True]}
first example of [PC and LOC and not ARB]: {'arcs': [(0, 1), (0, 2), (1, 2), (1, 3), (2, 3)], 'roots': (0, 1, 0), 'sets': [[0, 2], [1, 3], [0, 1, 2, 3]], 'convex': [False, False, True]}
first example of [ARB and not PC]: none
first example of [ARB and not LOC]: none
