Running command: translateModel(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DD,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DD")
Notification: Performance of loadModel(Buildings): time 4.201/4.201, allocations: 464.6 MB / 476.8 MB, free: 2.195 MB / 378.7 MB
Notification: Performance of FrontEnd - loaded program: time 4.249e-05/4.267e-05, allocations: 5.828 kB / 0.5731 GB, free: 5.691 MB / 458.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.244/0.2441, allocations: 107.2 MB / 0.6778 GB, free: 10.34 MB / 0.5573 GB
Notification: Performance of FrontEnd - scodeFlatten: time 0.7749/1.019, allocations: 192.9 MB / 0.8662 GB, free: 11.19 MB / 0.6667 GB
Notification: Performance of FrontEnd - mkProgramGraph: time 0.000368/1.019, allocations: 116.8 kB / 0.8663 GB, free: 11.12 MB / 0.6667 GB
Notification: Performance of FrontEnd - DAE generated: time 0.528/1.547, allocations: 124 MB / 0.9874 GB, free: 9.156 MB / 0.7761 GB
Notification: Performance of FrontEnd: time 3.854e-06/1.547, allocations: 0 / 0.9874 GB, free: 9.156 MB / 0.7761 GB
Notification: Performance of Transformations before backend: time 0.0003023/1.548, allocations: 64 kB / 0.9875 GB, free: 9.094 MB / 0.7761 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 0.01673/1.565, allocations: 2.705 MB / 0.9901 GB, free: 6.332 MB / 0.7761 GB
Notification: Performance of prepare preOptimizeDAE: time 6.736e-05/1.565, allocations: 11.97 kB / 0.9901 GB, free: 6.32 MB / 0.7761 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.03167/1.596, allocations: 2.087 MB / 0.9922 GB, free: 4.227 MB / 0.7761 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.008265/1.605, allocations: 2.009 MB / 0.9941 GB, free: 2.172 MB / 0.7761 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003288/1.605, allocations: 230.2 kB / 0.9944 GB, free: 1.945 MB / 0.7761 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.001561/1.607, allocations: 304 kB / 0.9947 GB, free: 1.648 MB / 0.7761 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.01668/1.623, allocations: 5.319 MB / 0.9998 GB, free: 12.22 MB / 0.7917 GB
Notification: Performance of preOpt findStateOrder (simulation): time 0.0001074/1.623, allocations: 7.844 kB / 0.9999 GB, free: 12.21 MB / 0.7917 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0009658/1.624, allocations: 128 kB / 1 GB, free: 12.09 MB / 0.7917 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0006756/1.625, allocations: 289.3 kB / 1 GB, free: 11.8 MB / 0.7917 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01462/1.64, allocations: 4.969 MB / 1.005 GB, free: 6.828 MB / 0.7917 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.04705/1.687, allocations: 24.84 MB / 1.029 GB, free: 11.92 MB / 0.823 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.009482/1.696, allocations: 4.938 MB / 1.034 GB, free: 6.629 MB / 0.823 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.005441/1.702, allocations: 2.321 MB / 1.036 GB, free: 4.289 MB / 0.823 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0004048/1.702, allocations: 135 kB / 1.037 GB, free: 4.137 MB / 0.823 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 6.587e-05/1.702, allocations: 68.5 kB / 1.037 GB, free: 4.062 MB / 0.823 GB
Notification: Performance of pre-optimization done (n=230): time 6.859e-06/1.702, allocations: 0 / 1.037 GB, free: 4.062 MB / 0.823 GB
Notification: Performance of matching and sorting (n=311): time 0.1584/1.861, allocations: 30.98 MB / 1.067 GB, free: 5.078 MB / 0.8542 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001759/1.861, allocations: 247.8 kB / 1.067 GB, free: 4.785 MB / 0.8542 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002433/1.864, allocations: 1.157 MB / 1.068 GB, free: 3.613 MB / 0.8542 GB
Notification: Performance of collectPreVariables (initialization): time 0.000663/1.864, allocations: 73.7 kB / 1.068 GB, free: 3.535 MB / 0.8542 GB
Notification: Performance of collectInitialEqns (initialization): time 0.001226/1.865, allocations: 1.246 MB / 1.07 GB, free: 2.27 MB / 0.8542 GB
Notification: Performance of collectInitialBindings (initialization): time 0.001643/1.867, allocations: 1.043 MB / 1.071 GB, free: 1.211 MB / 0.8542 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004185/1.868, allocations: 64 kB / 1.071 GB, free: 1.148 MB / 0.8542 GB
Notification: Performance of setup shared object (initialization): time 0.0003691/1.868, allocations: 440.7 kB / 1.071 GB, free: 0.7109 MB / 0.8542 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.005412/1.873, allocations: 2.236 MB / 1.073 GB, free: 14.47 MB / 0.8698 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.006342/1.88, allocations: 2.908 MB / 1.076 GB, free: 11.29 MB / 0.8698 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.006292/1.886, allocations: 2.656 MB / 1.079 GB, free: 8.617 MB / 0.8698 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.96e-05/1.886, allocations: 7.938 kB / 1.079 GB, free: 8.609 MB / 0.8698 GB
Notification: Performance of matching and sorting (n=412) (initialization): time 0.02461/1.911, allocations: 8.362 MB / 1.087 GB, free: 200 kB / 0.8698 GB
Notification: Performance of prepare postOptimizeDAE: time 0.004176/1.915, allocations: 7.326 MB / 1.094 GB, free: 8.289 MB / 0.8855 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.827e-05/1.915, allocations: 20 kB / 1.094 GB, free: 8.27 MB / 0.8855 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.03364/1.949, allocations: 6.755 MB / 1.101 GB, free: 1.5 MB / 0.8855 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004894/1.954, allocations: 0.8228 MB / 1.101 GB, free: 0.6758 MB / 0.8855 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.5311/2.485, allocations: 16.66 MB / 1.118 GB, free: 251.5 MB / 0.8855 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004895/2.49, allocations: 0.5025 MB / 1.118 GB, free: 251.5 MB / 0.8855 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0009539/2.491, allocations: 183.8 kB / 1.118 GB, free: 251.5 MB / 0.8855 GB
Notification: Performance of prepare postOptimizeDAE: time 1.534e-05/2.491, allocations: 3.5 kB / 1.118 GB, free: 251.5 MB / 0.8855 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 0.006694/2.497, allocations: 2.677 MB / 1.121 GB, free: 251.3 MB / 0.8855 GB
Error: post-optimization module replaceHomotopyWithSimplified (initialization) failed.
Error: No system for the symbolic initialization was generated