Running command: translateModel(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepDown.YD,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_5.0.1_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepDown.YD")
Notification: Performance of loadModel(Buildings): time 3.49/3.49, allocations: 403.3 MB / 415.4 MB, free: 12.98 MB / 330.7 MB
Notification: Performance of FrontEnd - loaded program: time 3.701e-05/3.72e-05, allocations: 7.938 kB / 0.4991 GB, free: 13.4 MB / 426.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.4794/0.4794, allocations: 92.68 MB / 0.5896 GB, free: 14.48 MB / 490.7 MB
Notification: Performance of FrontEnd - scodeFlatten: time 0.2593/0.7388, allocations: 182 MB / 0.7673 GB, free: 8.246 MB / 0.6511 GB
Notification: Performance of FrontEnd - mkProgramGraph: time 0.0003585/0.7392, allocations: 115.9 kB / 0.7674 GB, free: 8.133 MB / 0.6511 GB
Notification: Performance of FrontEnd - DAE generated: time 0.9584/1.698, allocations: 133 MB / 0.8973 GB, free: 68.32 MB / 0.6511 GB
Notification: Performance of FrontEnd: time 2.789e-06/1.698, allocations: 0 / 0.8973 GB, free: 68.32 MB / 0.6511 GB
Notification: Performance of Transformations before backend: time 0.0001534/1.698, allocations: 72 kB / 0.8973 GB, free: 68.25 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: 983
 * Number of variables: 983
Notification: Performance of Generate backend data structure: time 0.009401/1.707, allocations: 2.921 MB / 0.9002 GB, free: 65.27 MB / 0.6511 GB
Notification: Performance of prepare preOptimizeDAE: time 4.495e-05/1.707, allocations: 11.97 kB / 0.9002 GB, free: 65.26 MB / 0.6511 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01514/1.722, allocations: 2.106 MB / 0.9022 GB, free: 63.14 MB / 0.6511 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.005672/1.728, allocations: 2.178 MB / 0.9044 GB, free: 60.92 MB / 0.6511 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002512/1.728, allocations: 263.1 kB / 0.9046 GB, free: 60.66 MB / 0.6511 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.001527/1.73, allocations: 348 kB / 0.905 GB, free: 60.32 MB / 0.6511 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.01624/1.746, allocations: 5.953 MB / 0.9108 GB, free: 54.27 MB / 0.6511 GB
Notification: Performance of preOpt findStateOrder (simulation): time 0.0001807/1.747, allocations: 7.938 kB / 0.9108 GB, free: 54.26 MB / 0.6511 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.001272/1.748, allocations: 144 kB / 0.9109 GB, free: 54.12 MB / 0.6511 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0008397/1.749, allocations: 294 kB / 0.9112 GB, free: 53.83 MB / 0.6511 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01448/1.763, allocations: 5.383 MB / 0.9165 GB, free: 48.44 MB / 0.6511 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0394/1.803, allocations: 20.29 MB / 0.9363 GB, free: 27.51 MB / 0.6511 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.007177/1.81, allocations: 4.498 MB / 0.9407 GB, free: 22.71 MB / 0.6511 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.003981/1.814, allocations: 2.047 MB / 0.9427 GB, free: 20.64 MB / 0.6511 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0002795/1.814, allocations: 135 kB / 0.9428 GB, free: 20.49 MB / 0.6511 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.106e-05/1.814, allocations: 68.48 kB / 0.9429 GB, free: 20.41 MB / 0.6511 GB
Notification: Performance of pre-optimization done (n=208): time 6.086e-06/1.814, allocations: 0 / 0.9429 GB, free: 20.41 MB / 0.6511 GB
Notification: Performance of matching and sorting (n=277): time 0.1181/1.932, allocations: 25.89 MB / 0.9681 GB, free: 10.48 MB / 0.6667 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001673/1.933, allocations: 239.6 kB / 0.9684 GB, free: 10.19 MB / 0.6667 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002776/1.935, allocations: 1.262 MB / 0.9696 GB, free: 8.918 MB / 0.6667 GB
Notification: Performance of collectPreVariables (initialization): time 0.0005664/1.936, allocations: 69.7 kB / 0.9697 GB, free: 8.844 MB / 0.6667 GB
Notification: Performance of collectInitialEqns (initialization): time 0.001407/1.937, allocations: 1.474 MB / 0.9711 GB, free: 7.348 MB / 0.6667 GB
Notification: Performance of collectInitialBindings (initialization): time 0.001436/1.939, allocations: 0.9357 MB / 0.972 GB, free: 6.398 MB / 0.6667 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004081/1.939, allocations: 64 kB / 0.9721 GB, free: 6.336 MB / 0.6667 GB
Notification: Performance of setup shared object (initialization): time 0.0003759/1.94, allocations: 444.8 kB / 0.9725 GB, free: 5.895 MB / 0.6667 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.00497/1.945, allocations: 2.122 MB / 0.9746 GB, free: 3.77 MB / 0.6667 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.006221/1.951, allocations: 3.017 MB / 0.9775 GB, free: 380 kB / 0.6667 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.006069/1.957, allocations: 2.585 MB / 0.9801 GB, free: 13.76 MB / 0.6823 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.065e-05/1.957, allocations: 11.95 kB / 0.9801 GB, free: 13.75 MB / 0.6823 GB
Notification: Performance of matching and sorting (n=416) (initialization): time 0.02336/1.981, allocations: 8.104 MB / 0.988 GB, free: 5.586 MB / 0.6823 GB
Notification: Performance of prepare postOptimizeDAE: time 0.006347/1.987, allocations: 10.62 MB / 0.9983 GB, free: 10.12 MB / 0.698 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.784e-05/1.987, allocations: 28 kB / 0.9984 GB, free: 10.1 MB / 0.698 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.03392/2.021, allocations: 6.514 MB / 1.005 GB, free: 3.57 MB / 0.698 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.005059/2.026, allocations: 0.8774 MB / 1.006 GB, free: 2.691 MB / 0.698 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.03349/2.06, allocations: 14.62 MB / 1.02 GB, free: 3.895 MB / 0.7136 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.005203/2.065, allocations: 0.5378 MB / 1.02 GB, free: 3.355 MB / 0.7136 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0007948/2.066, allocations: 191.9 kB / 1.021 GB, free: 3.168 MB / 0.7136 GB
Notification: Performance of prepare postOptimizeDAE: time 1.525e-05/2.066, allocations: 8 kB / 1.021 GB, free: 3.16 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 0.006635/2.072, allocations: 2.648 MB / 1.023 GB, free: 492 kB / 0.7136 GB
Error: post-optimization module replaceHomotopyWithSimplified (initialization) failed.
Error: No system for the symbolic initialization was generated