Running command: translateModel(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DD,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_5.0.1_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DD")
Notification: Performance of loadModel(Buildings): time 3.582/3.582, allocations: 403.3 MB / 415.4 MB, free: 12.99 MB / 330.7 MB
Notification: Performance of FrontEnd - loaded program: time 5.899e-05/5.913e-05, allocations: 3.938 kB / 0.4991 GB, free: 13.41 MB / 426.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.4974/0.4975, allocations: 92.69 MB / 0.5896 GB, free: 14.49 MB / 490.7 MB
Notification: Performance of FrontEnd - scodeFlatten: time 0.2625/0.76, allocations: 181.5 MB / 0.7668 GB, free: 8.75 MB / 0.6511 GB
Notification: Performance of FrontEnd - mkProgramGraph: time 0.0003736/0.7604, allocations: 111.9 kB / 0.7669 GB, free: 8.641 MB / 0.6511 GB
Notification: Performance of FrontEnd - DAE generated: time 0.8981/1.659, allocations: 123 MB / 0.887 GB, free: 79 MB / 0.6511 GB
Notification: Performance of FrontEnd: time 3.814e-06/1.659, allocations: 0 / 0.887 GB, free: 79 MB / 0.6511 GB
Notification: Performance of Transformations before backend: time 0.000324/1.659, allocations: 71.92 kB / 0.8871 GB, free: 78.93 MB / 0.6511 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 0.01397/1.673, allocations: 2.687 MB / 0.8897 GB, free: 76.19 MB / 0.6511 GB
Notification: Performance of prepare preOptimizeDAE: time 6.648e-05/1.673, allocations: 15.98 kB / 0.8897 GB, free: 76.18 MB / 0.6511 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01573/1.689, allocations: 2.075 MB / 0.8917 GB, free: 74.09 MB / 0.6511 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.005112/1.694, allocations: 2.001 MB / 0.8937 GB, free: 72.05 MB / 0.6511 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002504/1.694, allocations: 234.2 kB / 0.8939 GB, free: 71.82 MB / 0.6511 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.001461/1.696, allocations: 300 kB / 0.8942 GB, free: 71.52 MB / 0.6511 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.01423/1.71, allocations: 5.319 MB / 0.8994 GB, free: 66.1 MB / 0.6511 GB
Notification: Performance of preOpt findStateOrder (simulation): time 9.411e-05/1.71, allocations: 4 kB / 0.8994 GB, free: 66.09 MB / 0.6511 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.00076/1.711, allocations: 132 kB / 0.8995 GB, free: 65.96 MB / 0.6511 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0005664/1.711, allocations: 281.4 kB / 0.8998 GB, free: 65.69 MB / 0.6511 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01225/1.724, allocations: 4.977 MB / 0.9046 GB, free: 60.7 MB / 0.6511 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.03475/1.759, allocations: 18.46 MB / 0.9227 GB, free: 41.73 MB / 0.6511 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.007176/1.766, allocations: 4.956 MB / 0.9275 GB, free: 36.43 MB / 0.6511 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.004446/1.77, allocations: 2.302 MB / 0.9298 GB, free: 34.11 MB / 0.6511 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0003156/1.771, allocations: 139 kB / 0.9299 GB, free: 33.96 MB / 0.6511 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.268e-05/1.771, allocations: 72.48 kB / 0.93 GB, free: 33.88 MB / 0.6511 GB
Notification: Performance of pre-optimization done (n=230): time 6.516e-06/1.771, allocations: 3.938 kB / 0.93 GB, free: 33.88 MB / 0.6511 GB
Notification: Performance of matching and sorting (n=311): time 0.1401/1.911, allocations: 30.98 MB / 0.9602 GB, free: 2.879 MB / 0.6511 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 7.481e-05/1.911, allocations: 235.9 kB / 0.9604 GB, free: 2.598 MB / 0.6511 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002004/1.913, allocations: 1.157 MB / 0.9616 GB, free: 1.426 MB / 0.6511 GB
Notification: Performance of collectPreVariables (initialization): time 0.000597/1.914, allocations: 77.7 kB / 0.9616 GB, free: 1.344 MB / 0.6511 GB
Notification: Performance of collectInitialEqns (initialization): time 0.000665/1.914, allocations: 1.243 MB / 0.9629 GB, free: 84 kB / 0.6511 GB
Notification: Performance of collectInitialBindings (initialization): time 0.001538/1.916, allocations: 1.044 MB / 0.9639 GB, free: 15.02 MB / 0.6667 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003935/1.916, allocations: 68 kB / 0.9639 GB, free: 14.95 MB / 0.6667 GB
Notification: Performance of setup shared object (initialization): time 0.0003501/1.917, allocations: 440.7 kB / 0.9644 GB, free: 14.52 MB / 0.6667 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.005015/1.922, allocations: 2.232 MB / 0.9665 GB, free: 12.28 MB / 0.6667 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.006082/1.928, allocations: 2.908 MB / 0.9694 GB, free: 9.105 MB / 0.6667 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.006252/1.934, allocations: 2.65 MB / 0.972 GB, free: 6.434 MB / 0.6667 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.075e-05/1.934, allocations: 4 kB / 0.972 GB, free: 6.43 MB / 0.6667 GB
Notification: Performance of matching and sorting (n=412) (initialization): time 0.02379/1.958, allocations: 8.365 MB / 0.9801 GB, free: 14.01 MB / 0.6823 GB
Notification: Performance of prepare postOptimizeDAE: time 0.00384/1.962, allocations: 7.326 MB / 0.9873 GB, free: 6.105 MB / 0.6823 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.207e-05/1.962, allocations: 20 kB / 0.9873 GB, free: 6.086 MB / 0.6823 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.03391/1.996, allocations: 6.719 MB / 0.9939 GB, free: 15.36 MB / 0.698 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.005023/2.001, allocations: 0.8189 MB / 0.9947 GB, free: 14.54 MB / 0.698 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.03628/2.037, allocations: 16.67 MB / 1.011 GB, free: 13.69 MB / 0.7136 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004929/2.042, allocations: 0.503 MB / 1.011 GB, free: 13.19 MB / 0.7136 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.00114/2.043, allocations: 179.9 kB / 1.012 GB, free: 13.01 MB / 0.7136 GB
Notification: Performance of prepare postOptimizeDAE: time 1.804e-05/2.043, allocations: 5.719 kB / 1.012 GB, free: 13.01 MB / 0.7136 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 0.007492/2.051, allocations: 2.676 MB / 1.014 GB, free: 10.31 MB / 0.7136 GB
Error: post-optimization module replaceHomotopyWithSimplified (initialization) failed.
Error: No system for the symbolic initialization was generated