Notification: Performance of FrontEnd - loaded program: time 1.097e-05/1.118e-05, allocations: 1.062 kB / 439.7 MB, free: 9.555 MB / 350.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1091/0.1091, allocations: 78.97 MB / 0.5065 GB, free: 2.723 MB / 414.1 MB Notification: Performance of FrontEnd - scodeFlatten: time 0.2732/0.3824, allocations: 153.8 MB / 0.6567 GB, free: 32.16 MB / 0.5138 GB Notification: Performance of FrontEnd - mkProgramGraph: time 0.000398/0.3829, allocations: 90.88 kB / 0.6567 GB, free: 32.16 MB / 0.5138 GB Error: Error occurred while flattening model Buildings.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLine