This definition won’t pass in Abaqus. And I would avoid such coarse meshes consisting of C3D4 elements for these tests.
To actually confirm the incorrectness of results obtained with CalculiX’s in this case, it is necessary to achieve convergence in both solvers (CalculiX and the reference one - Abaqus) and test different element types with a sufficiently dense mesh. I would expect C3D8R elements to be the most accurate but it’s also worth checking out other types. Here you can find my results of plastic bending test with different elements: Elasto-plastic bending - elements, accuracy