Running command: translateModel(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DD,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_6.0.0_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DD")
Notification: Performance of loadModel(Buildings): time 3.865/3.865, allocations: 432.7 MB / 444.9 MB, free: 15.7 MB / 362.7 MB
Notification: Performance of FrontEnd - loaded program: time 3.42e-05/3.422e-05, allocations: 5.188 kB / 0.5337 GB, free: 12.2 MB / 442.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.1697/0.1698, allocations: 98.72 MB / 0.6302 GB, free: 6.18 MB / 0.5105 GB
Notification: Performance of FrontEnd - scodeFlatten: time 0.7545/0.9242, allocations: 185.6 MB / 0.8114 GB, free: 57.18 MB / 0.6511 GB
Notification: Performance of FrontEnd - mkProgramGraph: time 0.0003261/0.9246, allocations: 115.9 kB / 0.8115 GB, free: 57.18 MB / 0.6511 GB
Notification: Performance of FrontEnd - DAE generated: time 0.4352/1.36, allocations: 124 MB / 0.9326 GB, free: 3.535 MB / 0.6667 GB
Notification: Performance of FrontEnd: time 2.725e-06/1.36, allocations: 0 / 0.9326 GB, free: 3.535 MB / 0.6667 GB
Notification: Performance of Transformations before backend: time 0.0001954/1.36, allocations: 64 kB / 0.9327 GB, free: 3.473 MB / 0.6667 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 874
 * Number of variables: 874
Notification: Performance of Generate backend data structure: time 0.01018/1.37, allocations: 2.689 MB / 0.9353 GB, free: 0.7266 MB / 0.6667 GB
Notification: Performance of prepare preOptimizeDAE: time 5.785e-05/1.37, allocations: 11.98 kB / 0.9353 GB, free: 0.7148 MB / 0.6667 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01594/1.386, allocations: 2.091 MB / 0.9374 GB, free: 14.62 MB / 0.6823 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.006262/1.393, allocations: 2.009 MB / 0.9393 GB, free: 12.56 MB / 0.6823 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003479/1.393, allocations: 234.2 kB / 0.9395 GB, free: 12.33 MB / 0.6823 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.001705/1.395, allocations: 304 kB / 0.9398 GB, free: 12.04 MB / 0.6823 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.01705/1.412, allocations: 5.311 MB / 0.945 GB, free: 6.617 MB / 0.6823 GB
Notification: Performance of preOpt findStateOrder (simulation): time 0.0001009/1.412, allocations: 15.78 kB / 0.945 GB, free: 6.602 MB / 0.6823 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0007674/1.413, allocations: 127.9 kB / 0.9452 GB, free: 6.477 MB / 0.6823 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0006823/1.413, allocations: 293.3 kB / 0.9454 GB, free: 6.188 MB / 0.6823 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01439/1.428, allocations: 4.973 MB / 0.9503 GB, free: 1.207 MB / 0.6823 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.04765/1.476, allocations: 24.83 MB / 0.9745 GB, free: 6.316 MB / 0.7136 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.009294/1.485, allocations: 4.941 MB / 0.9794 GB, free: 1.02 MB / 0.7136 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.005259/1.49, allocations: 2.31 MB / 0.9816 GB, free: 14.69 MB / 0.7292 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.000405/1.491, allocations: 139 kB / 0.9818 GB, free: 14.54 MB / 0.7292 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 6.39e-05/1.491, allocations: 68.52 kB / 0.9818 GB, free: 14.46 MB / 0.7292 GB
Notification: Performance of pre-optimization done (n=230): time 9.022e-06/1.491, allocations: 0 / 0.9818 GB, free: 14.46 MB / 0.7292 GB
Notification: Performance of matching and sorting (n=311): time 0.1502/1.641, allocations: 30.98 MB / 1.012 GB, free: 15.47 MB / 0.7605 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001715/1.641, allocations: 251.8 kB / 1.012 GB, free: 15.18 MB / 0.7605 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002452/1.644, allocations: 1.149 MB / 1.013 GB, free: 14.01 MB / 0.7605 GB
Notification: Performance of collectPreVariables (initialization): time 0.0006641/1.644, allocations: 77.7 kB / 1.014 GB, free: 13.93 MB / 0.7605 GB
Notification: Performance of collectInitialEqns (initialization): time 0.001213/1.646, allocations: 1.25 MB / 1.015 GB, free: 12.66 MB / 0.7605 GB
Notification: Performance of collectInitialBindings (initialization): time 0.001684/1.647, allocations: 1.047 MB / 1.016 GB, free: 11.6 MB / 0.7605 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004243/1.648, allocations: 64 kB / 1.016 GB, free: 11.54 MB / 0.7605 GB
Notification: Performance of setup shared object (initialization): time 0.0003774/1.648, allocations: 440.7 kB / 1.016 GB, free: 11.1 MB / 0.7605 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.005217/1.653, allocations: 2.236 MB / 1.018 GB, free: 8.859 MB / 0.7605 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.006352/1.66, allocations: 2.9 MB / 1.021 GB, free: 5.691 MB / 0.7605 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.006262/1.666, allocations: 2.662 MB / 1.024 GB, free: 3.008 MB / 0.7605 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.86e-05/1.666, allocations: 4 kB / 1.024 GB, free: 3.004 MB / 0.7605 GB
Notification: Performance of matching and sorting (n=412) (initialization): time 0.02411/1.69, allocations: 8.358 MB / 1.032 GB, free: 10.59 MB / 0.7761 GB
Notification: Performance of prepare postOptimizeDAE: time 0.004127/1.694, allocations: 7.328 MB / 1.039 GB, free: 2.684 MB / 0.7761 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.511e-05/1.694, allocations: 20 kB / 1.039 GB, free: 2.664 MB / 0.7761 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.04662/1.741, allocations: 6.755 MB / 1.046 GB, free: 11.89 MB / 0.7917 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.008987/1.75, allocations: 0.8228 MB / 1.047 GB, free: 11.07 MB / 0.7917 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.06045/1.811, allocations: 16.67 MB / 1.063 GB, free: 10.23 MB / 0.8073 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.008551/1.819, allocations: 0.4991 MB / 1.063 GB, free: 9.727 MB / 0.8073 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001351/1.821, allocations: 184.1 kB / 1.064 GB, free: 9.547 MB / 0.8073 GB
Notification: Performance of prepare postOptimizeDAE: time 2.31e-05/1.821, allocations: 5.875 kB / 1.064 GB, free: 9.543 MB / 0.8073 GB
Error: Internal error IndexReduction.pantelidesIndexReduction failed! System is structurally singulare and cannot handled because number of unassigned equations is larger than number of states. Use -d=bltdump to get more information.
Notification: Performance of <failed> postOpt replaceHomotopyWithSimplified (initialization): time 0.01176/1.832, allocations: 2.692 MB / 1.066 GB, free: 6.828 MB / 0.8073 GB
Error: post-optimization module replaceHomotopyWithSimplified (initialization) failed.
Error: No system for the symbolic initialization was generated