Notification: Performance of loadModel(Buildings): time 2.628/2.628, allocations: 268.2 MB / 275.3 MB, free: 7.602 MB / 218.7 MB Notification: Performance of FrontEnd - loaded program: time 2.113e-05/2.111e-05, allocations: 8 kB / 339.2 MB, free: 7.895 MB / 282.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3386/0.3387, allocations: 61.54 MB / 400.8 MB, free: 13.79 MB / 330.7 MB Notification: Performance of FrontEnd - scodeFlatten: time 10.06/10.4, allocations: 4.477 GB / 4.869 GB, free: 132.3 MB / 0.5261 GB Notification: Performance of FrontEnd - mkProgramGraph: time 0.0003121/10.4, allocations: 89.58 kB / 4.869 GB, free: 132.3 MB / 0.5261 GB [/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 1.6/BoundaryConditions/SolarGeometry/ZenithAngle.mo:23:3-30:31:writable] Error: Failed to instantiate equation connect(weaBus.sol.dec, zen.decAng) annotation(Text(string = "%first", index = -1, extent = {{-6, 3}, {-6, 3}}));. Error: Error occurred while flattening model Buildings.BoundaryConditions.SolarIrradiation.BaseClasses.Examples.RelativeAirMass Notification: Performance of FrontEnd: time 0.01011/10.41, allocations: 2.413 MB / 4.871 GB, free: 131.9 MB / 0.5261 GB