Running command: translateModel(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DD,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_7.0.0_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DD")
Notification: Performance of loadModel(Buildings): time 4.236/4.236, allocations: 460.5 MB / 472.6 MB, free: 5.379 MB / 378.7 MB
Notification: Performance of FrontEnd - loaded program: time 3.247e-05/3.271e-05, allocations: 4 kB / 0.5681 GB, free: 10.12 MB / 458.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.192/0.192, allocations: 106.2 MB / 0.6719 GB, free: 15.71 MB / 0.5573 GB
Notification: Performance of FrontEnd - scodeFlatten: time 0.768/0.9601, allocations: 192.5 MB / 0.8599 GB, free: 4.938 MB / 0.6511 GB
Notification: Performance of FrontEnd - mkProgramGraph: time 0.0003592/0.9605, allocations: 118.9 kB / 0.86 GB, free: 4.867 MB / 0.6511 GB
Notification: Performance of FrontEnd - DAE generated: time 0.5344/1.495, allocations: 124 MB / 0.9811 GB, free: 2.938 MB / 0.7605 GB
Notification: Performance of FrontEnd: time 2.37e-06/1.495, allocations: 0 / 0.9811 GB, free: 2.938 MB / 0.7605 GB
Notification: Performance of Transformations before backend: time 0.0001832/1.495, allocations: 67.98 kB / 0.9812 GB, free: 2.871 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: 874
 * Number of variables: 874
Notification: Performance of Generate backend data structure: time 0.0097/1.505, allocations: 2.687 MB / 0.9838 GB, free: 132 kB / 0.7605 GB
Notification: Performance of prepare preOptimizeDAE: time 4.598e-05/1.505, allocations: 8.031 kB / 0.9838 GB, free: 124 kB / 0.7605 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0158/1.521, allocations: 2.087 MB / 0.9859 GB, free: 14.03 MB / 0.7761 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.006107/1.527, allocations: 2.005 MB / 0.9878 GB, free: 11.98 MB / 0.7761 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003314/1.527, allocations: 238.2 kB / 0.9881 GB, free: 11.74 MB / 0.7761 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.00161/1.529, allocations: 300 kB / 0.9883 GB, free: 11.45 MB / 0.7761 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.01602/1.545, allocations: 5.315 MB / 0.9935 GB, free: 6.027 MB / 0.7761 GB
Notification: Performance of preOpt findStateOrder (simulation): time 0.0001041/1.545, allocations: 0 / 0.9935 GB, free: 6.027 MB / 0.7761 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.001124/1.546, allocations: 135.9 kB / 0.9937 GB, free: 5.895 MB / 0.7761 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0007037/1.547, allocations: 293.3 kB / 0.9939 GB, free: 5.605 MB / 0.7761 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01407/1.561, allocations: 4.981 MB / 0.9988 GB, free: 0.6172 MB / 0.7761 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.04684/1.608, allocations: 24.84 MB / 1.023 GB, free: 5.715 MB / 0.8073 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.009263/1.617, allocations: 4.944 MB / 1.028 GB, free: 420 kB / 0.8073 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.005243/1.623, allocations: 2.302 MB / 1.03 GB, free: 14.09 MB / 0.823 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0003722/1.623, allocations: 147 kB / 1.03 GB, free: 13.93 MB / 0.823 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 6.642e-05/1.623, allocations: 68.48 kB / 1.03 GB, free: 13.86 MB / 0.823 GB
Notification: Performance of pre-optimization done (n=230): time 6.515e-06/1.623, allocations: 0 / 1.03 GB, free: 13.86 MB / 0.823 GB
Notification: Performance of matching and sorting (n=311): time 0.1547/1.778, allocations: 30.98 MB / 1.061 GB, free: 14.87 MB / 0.8542 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001742/1.778, allocations: 247.8 kB / 1.061 GB, free: 14.58 MB / 0.8542 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002489/1.781, allocations: 1.153 MB / 1.062 GB, free: 13.41 MB / 0.8542 GB
Notification: Performance of collectPreVariables (initialization): time 0.0006911/1.781, allocations: 77.7 kB / 1.062 GB, free: 13.33 MB / 0.8542 GB
Notification: Performance of collectInitialEqns (initialization): time 0.001253/1.783, allocations: 1.243 MB / 1.063 GB, free: 12.07 MB / 0.8542 GB
Notification: Performance of collectInitialBindings (initialization): time 0.001781/1.784, allocations: 1.047 MB / 1.064 GB, free: 11 MB / 0.8542 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004447/1.785, allocations: 64 kB / 1.064 GB, free: 10.94 MB / 0.8542 GB
Notification: Performance of setup shared object (initialization): time 0.0003886/1.785, allocations: 444.7 kB / 1.065 GB, free: 10.5 MB / 0.8542 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.005363/1.791, allocations: 2.232 MB / 1.067 GB, free: 8.266 MB / 0.8542 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.006389/1.797, allocations: 2.908 MB / 1.07 GB, free: 5.094 MB / 0.8542 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.006414/1.803, allocations: 2.65 MB / 1.072 GB, free: 2.422 MB / 0.8542 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.999e-05/1.804, allocations: 4 kB / 1.072 GB, free: 2.418 MB / 0.8542 GB
Notification: Performance of matching and sorting (n=412) (initialization): time 0.02494/1.828, allocations: 8.373 MB / 1.081 GB, free: 9.988 MB / 0.8698 GB
Notification: Performance of prepare postOptimizeDAE: time 0.004237/1.833, allocations: 7.328 MB / 1.088 GB, free: 2.082 MB / 0.8698 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.383e-05/1.833, allocations: 20 kB / 1.088 GB, free: 2.062 MB / 0.8698 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.531/2.364, allocations: 6.75 MB / 1.094 GB, free: 242.8 MB / 0.8698 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004707/2.369, allocations: 0.8267 MB / 1.095 GB, free: 242.8 MB / 0.8698 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.03536/2.404, allocations: 16.66 MB / 1.111 GB, free: 240.9 MB / 0.8698 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004956/2.409, allocations: 0.5008 MB / 1.112 GB, free: 240.9 MB / 0.8698 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0009665/2.41, allocations: 182.3 kB / 1.112 GB, free: 240.9 MB / 0.8698 GB
Notification: Performance of prepare postOptimizeDAE: time 1.524e-05/2.41, allocations: 4.5 kB / 1.112 GB, free: 240.9 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 0.006558/2.417, allocations: 2.682 MB / 1.115 GB, free: 240.8 MB / 0.8698 GB
Error: post-optimization module replaceHomotopyWithSimplified (initialization) failed.
Error: No system for the symbolic initialization was generated