Test "TestCLOptimalStepsModel" causes an endless loop and a GPU error

This test causes an endless loop and a GPU error so that the operating system does not response properly (even when the corresponding Java process is killed).

Linux' journal reports following:

benedikt@R4-015-3-1:~$ journalctl 
...
Okt 11 09:49:19 R4-015-3-1 kernel: amdgpu 0000:02:00.0: GPU fault detected: 147 0x09784402
Okt 11 09:49:19 R4-015-3-1 kernel: amdgpu 0000:02:00.0:   VM_CONTEXT1_PROTECTION_FAULT_ADDR   0x00369D7D
Okt 11 09:49:19 R4-015-3-1 kernel: amdgpu 0000:02:00.0:   VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0A008002
Okt 11 09:49:19 R4-015-3-1 kernel: amdgpu 0000:02:00.0: VM fault (0x02, vmid 5) at page 3579261, read from 'TC2' (0x54433200) (8)

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