Running command: translateModel(OpenHPL.Tests.HPSimplePenstockControl,tolerance=0.0001,outputFormat="empty",numberOfIntervals=10000,variableFilter="",fileNamePrefix="OpenHPL_OpenHPL.Tests.HPSimplePenstockControl")
Notification: Performance of loadModel(OpenHPL): time 2.296/2.296, allocations: 257 MB / 269.1 MB, free: 11.75 MB / 218.7 MB
Notification: Performance of FrontEnd - loaded program: time 3.258e-05/3.262e-05, allocations: 4 kB / 332 MB, free: 12.76 MB / 282.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.3208/0.3209, allocations: 59.96 MB / 392 MB, free: 4.605 MB / 314.7 MB
Notification: Performance of FrontEnd - scodeFlatten: time 0.1495/0.4704, allocations: 99.53 MB / 491.5 MB, free: 0.9375 MB / 410.7 MB
Notification: Performance of FrontEnd - mkProgramGraph: time 0.0002853/0.4708, allocations: 83.95 kB / 491.6 MB, free: 0.8555 MB / 410.7 MB
[/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/OpenHPL 1.1.1/Tests/HPSimplePenstockControl.mo:50:3-51:61:writable] Error: Failed to instantiate equation 
connect(discharge.n, tail.n);.
Error: Error occurred while flattening model OpenHPL.Tests.HPSimplePenstockControl
Notification: Performance of FrontEnd: time 0.09186/0.5626, allocations: 20.37 MB / 0.5 GB, free: 12.44 MB / 442.7 MB