Notification: Performance of loadModel(Buildings): time 2.445/2.445, allocations: 268.2 MB / 275.3 MB, free: 6.469 MB / 218.7 MB Notification: Performance of FrontEnd - loaded program: time 2.637e-05/2.642e-05, allocations: 0 / 339.2 MB, free: 6.816 MB / 282.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3533/0.3534, allocations: 61.53 MB / 400.8 MB, free: 13.67 MB / 330.7 MB [/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 1.6/Examples/Tutorial/Boiler/System7.mo:226:3-231:76:writable] Error: Class Modelica_StateGraph2.Step not found in scope Buildings.Examples.Tutorial.Boiler.System7. Error: Error occurred while flattening model Buildings.Examples.Tutorial.Boiler.System7 Notification: Performance of FrontEnd: time 7.409/7.762, allocations: 3.109 GB / 3.5 GB, free: 75.57 MB / 0.5261 GB