Running command: translateModel(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepUp.DD,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_7.0.0_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepUp.DD")
Notification: Performance of loadModel(Buildings): time 4.225/4.225, allocations: 460.5 MB / 472.6 MB, free: 5.371 MB / 378.7 MB
Notification: Performance of FrontEnd - loaded program: time 3.386e-05/3.398e-05, allocations: 6.812 kB / 0.5681 GB, free: 10.14 MB / 458.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.2003/0.2004, allocations: 106.2 MB / 0.6719 GB, free: 15.71 MB / 0.5573 GB
Notification: Performance of FrontEnd - scodeFlatten: time 0.7752/0.9756, allocations: 191.8 MB / 0.8592 GB, free: 5.531 MB / 0.6511 GB
Notification: Performance of FrontEnd - mkProgramGraph: time 0.0003781/0.976, allocations: 113.3 kB / 0.8593 GB, free: 5.465 MB / 0.6511 GB
Notification: Performance of FrontEnd - DAE generated: time 0.5254/1.501, allocations: 123.4 MB / 0.9798 GB, free: 4.332 MB / 0.7605 GB
Notification: Performance of FrontEnd: time 2.355e-06/1.501, allocations: 0 / 0.9798 GB, free: 4.332 MB / 0.7605 GB
Notification: Performance of Transformations before backend: time 0.0001895/1.502, allocations: 64 kB / 0.9799 GB, free: 4.27 MB / 0.7605 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 863
 * Number of variables: 863
Notification: Performance of Generate backend data structure: time 0.01017/1.512, allocations: 2.673 MB / 0.9825 GB, free: 1.539 MB / 0.7605 GB
Notification: Performance of prepare preOptimizeDAE: time 5.093e-05/1.512, allocations: 8.031 kB / 0.9825 GB, free: 1.531 MB / 0.7605 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01631/1.528, allocations: 2.083 MB / 0.9845 GB, free: 15.44 MB / 0.7761 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.006246/1.535, allocations: 2.001 MB / 0.9865 GB, free: 13.39 MB / 0.7761 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003464/1.535, allocations: 230.1 kB / 0.9867 GB, free: 13.17 MB / 0.7761 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.00163/1.537, allocations: 296 kB / 0.987 GB, free: 12.88 MB / 0.7761 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.01716/1.554, allocations: 5.294 MB / 0.9921 GB, free: 7.477 MB / 0.7761 GB
Notification: Performance of preOpt findStateOrder (simulation): time 0.0001005/1.554, allocations: 0 / 0.9921 GB, free: 7.477 MB / 0.7761 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0009564/1.555, allocations: 131.9 kB / 0.9923 GB, free: 7.348 MB / 0.7761 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0006931/1.556, allocations: 281.3 kB / 0.9925 GB, free: 7.07 MB / 0.7761 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01542/1.571, allocations: 4.969 MB / 0.9974 GB, free: 2.094 MB / 0.7761 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.04897/1.62, allocations: 24.77 MB / 1.022 GB, free: 7.266 MB / 0.8073 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.01055/1.631, allocations: 4.932 MB / 1.026 GB, free: 1.977 MB / 0.8073 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.005554/1.636, allocations: 2.31 MB / 1.029 GB, free: 15.65 MB / 0.823 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0004275/1.637, allocations: 139 kB / 1.029 GB, free: 15.5 MB / 0.823 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 7.173e-05/1.637, allocations: 68.5 kB / 1.029 GB, free: 15.42 MB / 0.823 GB
Notification: Performance of pre-optimization done (n=230): time 6.902e-06/1.637, allocations: 0 / 1.029 GB, free: 15.42 MB / 0.823 GB
Notification: Performance of matching and sorting (n=311): time 0.1605/1.797, allocations: 30.92 MB / 1.059 GB, free: 500 kB / 0.8386 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001836/1.798, allocations: 247.8 kB / 1.059 GB, free: 200 kB / 0.8386 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002477/1.8, allocations: 1.115 MB / 1.06 GB, free: 15.06 MB / 0.8542 GB
Notification: Performance of collectPreVariables (initialization): time 0.0007092/1.801, allocations: 73.7 kB / 1.06 GB, free: 14.98 MB / 0.8542 GB
Notification: Performance of collectInitialEqns (initialization): time 0.00132/1.802, allocations: 1.235 MB / 1.062 GB, free: 13.73 MB / 0.8542 GB
Notification: Performance of collectInitialBindings (initialization): time 0.001867/1.804, allocations: 1.043 MB / 1.063 GB, free: 12.67 MB / 0.8542 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004592/1.805, allocations: 64 kB / 1.063 GB, free: 12.61 MB / 0.8542 GB
Notification: Performance of setup shared object (initialization): time 0.0004181/1.805, allocations: 444.7 kB / 1.063 GB, free: 12.17 MB / 0.8542 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.005674/1.811, allocations: 2.24 MB / 1.065 GB, free: 9.926 MB / 0.8542 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.006666/1.817, allocations: 2.9 MB / 1.068 GB, free: 6.762 MB / 0.8542 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.006598/1.824, allocations: 2.654 MB / 1.071 GB, free: 4.086 MB / 0.8542 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.844e-05/1.824, allocations: 8 kB / 1.071 GB, free: 4.078 MB / 0.8542 GB
Notification: Performance of matching and sorting (n=412) (initialization): time 0.02581/1.85, allocations: 8.369 MB / 1.079 GB, free: 11.66 MB / 0.8698 GB
Notification: Performance of prepare postOptimizeDAE: time 0.004266/1.854, allocations: 7.316 MB / 1.086 GB, free: 3.762 MB / 0.8698 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.729e-05/1.854, allocations: 20.28 kB / 1.086 GB, free: 3.742 MB / 0.8698 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.5427/2.397, allocations: 6.756 MB / 1.093 GB, free: 243.9 MB / 0.8698 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.005298/2.402, allocations: 0.8246 MB / 1.094 GB, free: 243.9 MB / 0.8698 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.03702/2.439, allocations: 16.66 MB / 1.11 GB, free: 242.1 MB / 0.8698 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.005148/2.445, allocations: 0.506 MB / 1.11 GB, free: 242.1 MB / 0.8698 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001072/2.446, allocations: 178.9 kB / 1.11 GB, free: 242.1 MB / 0.8698 GB
Notification: Performance of prepare postOptimizeDAE: time 1.397e-05/2.446, allocations: 4.156 kB / 1.11 GB, free: 242.1 MB / 0.8698 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 0.007217/2.453, allocations: 2.681 MB / 1.113 GB, free: 242 MB / 0.8698 GB
Error: post-optimization module replaceHomotopyWithSimplified (initialization) failed.
Error: No system for the symbolic initialization was generated