Running command: "" <> buildModelFMU(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DD,fileNamePrefix="Buildings_6_0_0_Buildings_Electrical_AC_ThreePhasesUnbalanced_Validation_IEEETests_Test4NodesFeeder_UnbalancedStepDown_DD",fmuType="me",version="2.0",platforms={"static"})
Notification: Performance of loadModel(Buildings): time 4.081/4.081, allocations: 432.7 MB / 444.9 MB, free: 15.7 MB / 362.7 MB
Notification: Performance of FrontEnd - loaded program: time 4.322e-05/4.334e-05, allocations: 3.734 kB / 0.5338 GB, free: 12.23 MB / 442.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.2312/0.2313, allocations: 98.72 MB / 0.6302 GB, free: 6.086 MB / 0.5105 GB
Notification: Performance of FrontEnd - scodeFlatten: time 0.9396/1.171, allocations: 185.6 MB / 0.8115 GB, free: 48.35 MB / 0.6511 GB
Notification: Performance of FrontEnd - mkProgramGraph: time 0.0004609/1.171, allocations: 113.7 kB / 0.8116 GB, free: 48.35 MB / 0.6511 GB
Notification: Performance of FrontEnd - DAE generated: time 0.5196/1.691, allocations: 124 MB / 0.9327 GB, free: 12.94 MB / 0.6823 GB
Notification: Performance of FrontEnd: time 2.214e-06/1.691, allocations: 0 / 0.9327 GB, free: 12.94 MB / 0.6823 GB
Notification: Performance of Transformations before backend: time 0.0001882/1.691, allocations: 67.52 kB / 0.9328 GB, free: 12.88 MB / 0.6823 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 0.01165/1.703, allocations: 2.7 MB / 0.9354 GB, free: 10.13 MB / 0.6823 GB
Notification: Performance of prepare preOptimizeDAE: time 5.594e-05/1.703, allocations: 16.03 kB / 0.9354 GB, free: 10.12 MB / 0.6823 GB
Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.00196/1.705, allocations: 490.1 kB / 0.9359 GB, free: 9.637 MB / 0.6823 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.02235/1.727, allocations: 2.083 MB / 0.9379 GB, free: 7.547 MB / 0.6823 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.007606/1.735, allocations: 1.999 MB / 0.9399 GB, free: 5.52 MB / 0.6823 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003832/1.735, allocations: 233.6 kB / 0.9401 GB, free: 5.301 MB / 0.6823 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.001963/1.737, allocations: 311.1 kB / 0.9404 GB, free: 5.008 MB / 0.6823 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.02032/1.758, allocations: 5.307 MB / 0.9456 GB, free: 15.62 MB / 0.698 GB
Notification: Performance of preOpt findStateOrder (simulation): time 0.0001378/1.758, allocations: 7.938 kB / 0.9456 GB, free: 15.62 MB / 0.698 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.001465/1.759, allocations: 131.5 kB / 0.9457 GB, free: 15.5 MB / 0.698 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0009467/1.76, allocations: 285.4 kB / 0.946 GB, free: 15.21 MB / 0.698 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01777/1.778, allocations: 4.977 MB / 0.9509 GB, free: 10.23 MB / 0.698 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.05629/1.835, allocations: 24.84 MB / 0.9751 GB, free: 15.46 MB / 0.7292 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.01132/1.846, allocations: 4.933 MB / 0.9799 GB, free: 10.17 MB / 0.7292 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.00668/1.853, allocations: 2.313 MB / 0.9822 GB, free: 7.84 MB / 0.7292 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0004496/1.853, allocations: 146.5 kB / 0.9823 GB, free: 7.688 MB / 0.7292 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 6.035e-05/1.853, allocations: 64.53 kB / 0.9824 GB, free: 7.617 MB / 0.7292 GB
Notification: Performance of pre-optimization done (n=230): time 5.57e-06/1.853, allocations: 4 kB / 0.9824 GB, free: 7.613 MB / 0.7292 GB
Notification: Performance of matching and sorting (n=311): time 0.2301/2.083, allocations: 30.98 MB / 1.013 GB, free: 8.691 MB / 0.7605 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.000169/2.084, allocations: 243.8 kB / 1.013 GB, free: 8.402 MB / 0.7605 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002841/2.086, allocations: 1.146 MB / 1.014 GB, free: 7.242 MB / 0.7605 GB
Notification: Performance of collectPreVariables (initialization): time 0.0008644/2.087, allocations: 73.7 kB / 1.014 GB, free: 7.164 MB / 0.7605 GB
Notification: Performance of collectInitialEqns (initialization): time 0.001338/2.089, allocations: 1.258 MB / 1.015 GB, free: 5.895 MB / 0.7605 GB
Notification: Performance of collectInitialBindings (initialization): time 0.002033/2.091, allocations: 1.042 MB / 1.016 GB, free: 4.863 MB / 0.7605 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0005378/2.091, allocations: 64 kB / 1.016 GB, free: 4.801 MB / 0.7605 GB
Notification: Performance of setup shared object (initialization): time 0.0003771/2.092, allocations: 444.7 kB / 1.017 GB, free: 4.359 MB / 0.7605 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.006577/2.098, allocations: 2.236 MB / 1.019 GB, free: 2.121 MB / 0.7605 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.00785/2.106, allocations: 2.9 MB / 1.022 GB, free: 14.95 MB / 0.7761 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.00817/2.114, allocations: 2.662 MB / 1.024 GB, free: 12.27 MB / 0.7761 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.171e-05/2.115, allocations: 4 kB / 1.024 GB, free: 12.27 MB / 0.7761 GB
Notification: Performance of matching and sorting (n=412) (initialization): time 0.03254/2.147, allocations: 8.369 MB / 1.033 GB, free: 3.848 MB / 0.7761 GB
Notification: Performance of prepare postOptimizeDAE: time 0.003583/2.151, allocations: 7.324 MB / 1.04 GB, free: 11.95 MB / 0.7917 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.468e-05/2.151, allocations: 20 kB / 1.04 GB, free: 11.93 MB / 0.7917 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.04807/2.199, allocations: 6.751 MB / 1.046 GB, free: 5.16 MB / 0.7917 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.007631/2.207, allocations: 0.8308 MB / 1.047 GB, free: 4.328 MB / 0.7917 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.05627/2.263, allocations: 16.67 MB / 1.063 GB, free: 3.484 MB / 0.8073 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00988/2.273, allocations: 0.4991 MB / 1.064 GB, free: 2.984 MB / 0.8073 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001474/2.274, allocations: 183.9 kB / 1.064 GB, free: 2.805 MB / 0.8073 GB
Notification: Performance of prepare postOptimizeDAE: time 1.933e-05/2.274, allocations: 4 kB / 1.064 GB, free: 2.801 MB / 0.8073 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 0.01223/2.287, allocations: 2.688 MB / 1.067 GB, free: 96 kB / 0.8073 GB
Error: post-optimization module replaceHomotopyWithSimplified (initialization) failed.
Error: No system for the symbolic initialization was generated