Iteration 0: [1.0, 0.0, 0.0, 0.0] position: 0
Iteration 1: [0.0, 0.0, 1.0, 0.0] position: 2
Iteration 2: [0.0, 1.0, 0.0, 0.0] position: 1
Iteration 3: [0.0, 0.0, 0.0, 1.0] position: 3
iter check passed
pbt result: [1, 0, 1, 1]
pbt check failed
