Running command: "" <> buildModelFMU(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DD,fileNamePrefix="Buildings_7_0_0_Buildings_Electrical_AC_ThreePhasesUnbalanced_Validation_IEEETests_Test4NodesFeeder_UnbalancedStepDown_DD",fmuType="me",version="2.0",platforms={"static"})
Notification: Performance of loadModel(Buildings): time 4.257/4.257, allocations: 460.4 MB / 472.6 MB, free: 5.301 MB / 378.7 MB
Notification: Performance of FrontEnd - loaded program: time 4.132e-05/4.138e-05, allocations: 4 kB / 0.5682 GB, free: 10.02 MB / 458.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.2561/0.2562, allocations: 106.2 MB / 0.672 GB, free: 15.61 MB / 0.5573 GB
Notification: Performance of FrontEnd - scodeFlatten: time 0.945/1.201, allocations: 192.5 MB / 0.86 GB, free: 4.449 MB / 0.6511 GB
Notification: Performance of FrontEnd - mkProgramGraph: time 0.000428/1.202, allocations: 117.8 kB / 0.8601 GB, free: 4.379 MB / 0.6511 GB
Notification: Performance of FrontEnd - DAE generated: time 0.5181/1.72, allocations: 124 MB / 0.9812 GB, free: 2.734 MB / 0.7605 GB
Notification: Performance of FrontEnd: time 1.583e-06/1.72, allocations: 0 / 0.9812 GB, free: 2.734 MB / 0.7605 GB
Notification: Performance of Transformations before backend: time 0.0002014/1.72, allocations: 64 kB / 0.9813 GB, free: 2.672 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 0.01261/1.733, allocations: 2.697 MB / 0.9839 GB, free: 15.92 MB / 0.7761 GB
Notification: Performance of prepare preOptimizeDAE: time 5.349e-05/1.733, allocations: 8.031 kB / 0.9839 GB, free: 15.91 MB / 0.7761 GB
Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.002511/1.735, allocations: 492.3 kB / 0.9844 GB, free: 15.42 MB / 0.7761 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.02206/1.757, allocations: 2.087 MB / 0.9864 GB, free: 13.32 MB / 0.7761 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.01105/1.769, allocations: 2.009 MB / 0.9884 GB, free: 11.27 MB / 0.7761 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0005378/1.769, allocations: 242.1 kB / 0.9886 GB, free: 11.03 MB / 0.7761 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.002473/1.772, allocations: 308 kB / 0.9889 GB, free: 10.73 MB / 0.7761 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.02852/1.8, allocations: 5.299 MB / 0.9941 GB, free: 5.324 MB / 0.7761 GB
Notification: Performance of preOpt findStateOrder (simulation): time 0.0002152/1.801, allocations: 19.73 kB / 0.9941 GB, free: 5.305 MB / 0.7761 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.002099/1.803, allocations: 132 kB / 0.9942 GB, free: 5.176 MB / 0.7761 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.001416/1.804, allocations: 289.3 kB / 0.9945 GB, free: 4.891 MB / 0.7761 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.02658/1.831, allocations: 4.973 MB / 0.9994 GB, free: 15.91 MB / 0.7917 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.08207/1.913, allocations: 24.84 MB / 1.024 GB, free: 5.004 MB / 0.8073 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.01681/1.93, allocations: 4.94 MB / 1.028 GB, free: 15.7 MB / 0.823 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.01004/1.94, allocations: 2.31 MB / 1.031 GB, free: 13.38 MB / 0.823 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0006816/1.941, allocations: 147 kB / 1.031 GB, free: 13.21 MB / 0.823 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 9.546e-05/1.941, allocations: 64.56 kB / 1.031 GB, free: 13.14 MB / 0.823 GB
Notification: Performance of pre-optimization done (n=230): time 8.987e-06/1.941, allocations: 0 / 1.031 GB, free: 13.14 MB / 0.823 GB
Notification: Performance of matching and sorting (n=311): time 0.2355/2.176, allocations: 30.97 MB / 1.061 GB, free: 14.17 MB / 0.8542 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001626/2.176, allocations: 243.8 kB / 1.061 GB, free: 13.88 MB / 0.8542 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002744/2.179, allocations: 1.153 MB / 1.063 GB, free: 12.71 MB / 0.8542 GB
Notification: Performance of collectPreVariables (initialization): time 0.0008926/2.18, allocations: 73.7 kB / 1.063 GB, free: 12.63 MB / 0.8542 GB
Notification: Performance of collectInitialEqns (initialization): time 0.001265/2.181, allocations: 1.254 MB / 1.064 GB, free: 11.36 MB / 0.8542 GB
Notification: Performance of collectInitialBindings (initialization): time 0.002007/2.184, allocations: 1.043 MB / 1.065 GB, free: 10.3 MB / 0.8542 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0005364/2.184, allocations: 68 kB / 1.065 GB, free: 10.23 MB / 0.8542 GB
Notification: Performance of setup shared object (initialization): time 0.0003524/2.184, allocations: 440.7 kB / 1.065 GB, free: 9.797 MB / 0.8542 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.006458/2.191, allocations: 2.228 MB / 1.067 GB, free: 7.566 MB / 0.8542 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.007573/2.199, allocations: 2.908 MB / 1.07 GB, free: 4.395 MB / 0.8542 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.007453/2.206, allocations: 2.65 MB / 1.073 GB, free: 1.723 MB / 0.8542 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.333e-05/2.206, allocations: 4 kB / 1.073 GB, free: 1.719 MB / 0.8542 GB
Notification: Performance of matching and sorting (n=412) (initialization): time 0.03169/2.238, allocations: 8.377 MB / 1.081 GB, free: 9.285 MB / 0.8698 GB
Notification: Performance of prepare postOptimizeDAE: time 0.00332/2.241, allocations: 7.328 MB / 1.088 GB, free: 1.379 MB / 0.8698 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.074e-05/2.241, allocations: 20 kB / 1.088 GB, free: 1.359 MB / 0.8698 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.7212/2.963, allocations: 6.751 MB / 1.095 GB, free: 242 MB / 0.8698 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.007404/2.97, allocations: 0.8232 MB / 1.096 GB, free: 242 MB / 0.8698 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.04657/3.017, allocations: 16.67 MB / 1.112 GB, free: 240.2 MB / 0.8698 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.007475/3.024, allocations: 0.5007 MB / 1.112 GB, free: 240.2 MB / 0.8698 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.00123/3.025, allocations: 179.8 kB / 1.113 GB, free: 240.2 MB / 0.8698 GB
Notification: Performance of prepare postOptimizeDAE: time 1.746e-05/3.026, allocations: 7.719 kB / 1.113 GB, free: 240.2 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 0.008606/3.034, allocations: 2.68 MB / 1.115 GB, free: 240.1 MB / 0.8698 GB
Error: post-optimization module replaceHomotopyWithSimplified (initialization) failed.
Error: No system for the symbolic initialization was generated