Running command: "" <> buildModelFMU(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DD,fileNamePrefix="Buildings_5_0_1_Buildings_Electrical_AC_ThreePhasesUnbalanced_Validation_IEEETests_Test4NodesFeeder_UnbalancedStepDown_DD",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadModel(Buildings): time 4.275/4.275, allocations: 403.3 MB / 415.4 MB, free: 12.98 MB / 330.7 MB Notification: Performance of FrontEnd - loaded program: time 4.199e-05/4.213e-05, allocations: 4 kB / 0.4992 GB, free: 13.32 MB / 426.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.6509/0.651, allocations: 92.68 MB / 0.5897 GB, free: 14.37 MB / 490.7 MB Notification: Performance of FrontEnd - scodeFlatten: time 0.3242/0.9752, allocations: 181.5 MB / 0.7669 GB, free: 8.625 MB / 0.6511 GB Notification: Performance of FrontEnd - mkProgramGraph: time 0.0005027/0.9758, allocations: 115.9 kB / 0.767 GB, free: 8.512 MB / 0.6511 GB Notification: Performance of FrontEnd - DAE generated: time 1.029/2.005, allocations: 122.9 MB / 0.8871 GB, free: 78.76 MB / 0.6511 GB Notification: Performance of FrontEnd: time 2.184e-06/2.005, allocations: 0 / 0.8871 GB, free: 78.76 MB / 0.6511 GB Notification: Performance of Transformations before backend: time 0.0001725/2.005, allocations: 64 kB / 0.8871 GB, free: 78.7 MB / 0.6511 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 0.01138/2.016, allocations: 2.693 MB / 0.8898 GB, free: 75.95 MB / 0.6511 GB Notification: Performance of prepare preOptimizeDAE: time 5.393e-05/2.016, allocations: 12.03 kB / 0.8898 GB, free: 75.93 MB / 0.6511 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.002113/2.018, allocations: 492.3 kB / 0.8902 GB, free: 75.44 MB / 0.6511 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.02151/2.04, allocations: 2.071 MB / 0.8923 GB, free: 73.36 MB / 0.6511 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.006388/2.046, allocations: 2.009 MB / 0.8942 GB, free: 71.31 MB / 0.6511 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002542/2.047, allocations: 234.2 kB / 0.8945 GB, free: 71.08 MB / 0.6511 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.001613/2.048, allocations: 304 kB / 0.8947 GB, free: 70.78 MB / 0.6511 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01639/2.065, allocations: 5.307 MB / 0.8999 GB, free: 65.37 MB / 0.6511 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0001222/2.065, allocations: 3.938 kB / 0.8999 GB, free: 65.36 MB / 0.6511 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.001015/2.066, allocations: 132 kB / 0.9001 GB, free: 65.23 MB / 0.6511 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0007812/2.067, allocations: 297.3 kB / 0.9003 GB, free: 64.94 MB / 0.6511 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01507/2.082, allocations: 4.969 MB / 0.9052 GB, free: 59.96 MB / 0.6511 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.04455/2.126, allocations: 18.47 MB / 0.9232 GB, free: 40.98 MB / 0.6511 GB Notification: Performance of preOpt comSubExp (simulation): time 0.009641/2.136, allocations: 4.937 MB / 0.9281 GB, free: 35.7 MB / 0.6511 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.005878/2.142, allocations: 2.318 MB / 0.9303 GB, free: 33.36 MB / 0.6511 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0004054/2.142, allocations: 139 kB / 0.9304 GB, free: 33.21 MB / 0.6511 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.178e-05/2.143, allocations: 64.56 kB / 0.9305 GB, free: 33.14 MB / 0.6511 GB Notification: Performance of pre-optimization done (n=230): time 5.5e-06/2.143, allocations: 4 kB / 0.9305 GB, free: 33.13 MB / 0.6511 GB Notification: Performance of matching and sorting (n=311): time 0.2142/2.357, allocations: 30.98 MB / 0.9608 GB, free: 2.145 MB / 0.6511 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001026/2.357, allocations: 247.8 kB / 0.961 GB, free: 1.852 MB / 0.6511 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002458/2.359, allocations: 1.153 MB / 0.9621 GB, free: 0.6836 MB / 0.6511 GB Notification: Performance of collectPreVariables (initialization): time 0.0009571/2.36, allocations: 73.7 kB / 0.9622 GB, free: 0.6055 MB / 0.6511 GB Notification: Performance of collectInitialEqns (initialization): time 0.001203/2.362, allocations: 1.242 MB / 0.9634 GB, free: 15.34 MB / 0.6667 GB Notification: Performance of collectInitialBindings (initialization): time 0.002104/2.364, allocations: 1.04 MB / 0.9644 GB, free: 14.29 MB / 0.6667 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0005709/2.364, allocations: 64 kB / 0.9645 GB, free: 14.23 MB / 0.6667 GB Notification: Performance of setup shared object (initialization): time 0.0003826/2.365, allocations: 440.7 kB / 0.9649 GB, free: 13.79 MB / 0.6667 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.006772/2.372, allocations: 2.236 MB / 0.9671 GB, free: 11.55 MB / 0.6667 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.008471/2.38, allocations: 2.908 MB / 0.9699 GB, free: 8.371 MB / 0.6667 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.007862/2.388, allocations: 2.65 MB / 0.9725 GB, free: 5.699 MB / 0.6667 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.372e-05/2.388, allocations: 8 kB / 0.9725 GB, free: 5.691 MB / 0.6667 GB Notification: Performance of matching and sorting (n=412) (initialization): time 0.0328/2.421, allocations: 8.365 MB / 0.9807 GB, free: 13.27 MB / 0.6823 GB Notification: Performance of prepare postOptimizeDAE: time 0.003563/2.425, allocations: 7.323 MB / 0.9878 GB, free: 5.371 MB / 0.6823 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.314e-05/2.425, allocations: 16 kB / 0.9879 GB, free: 5.355 MB / 0.6823 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.04864/2.473, allocations: 6.727 MB / 0.9944 GB, free: 14.62 MB / 0.698 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.007651/2.481, allocations: 0.8268 MB / 0.9952 GB, free: 13.79 MB / 0.698 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.04684/2.528, allocations: 16.67 MB / 1.012 GB, free: 12.94 MB / 0.7136 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00772/2.536, allocations: 0.4991 MB / 1.012 GB, free: 12.44 MB / 0.7136 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001186/2.537, allocations: 183.9 kB / 1.012 GB, free: 12.26 MB / 0.7136 GB Notification: Performance of prepare postOptimizeDAE: time 1.803e-05/2.537, allocations: 4 kB / 1.012 GB, free: 12.26 MB / 0.7136 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 postOpt replaceHomotopyWithSimplified (initialization): time 0.008889/2.546, allocations: 2.68 MB / 1.015 GB, free: 9.559 MB / 0.7136 GB Error: post-optimization module replaceHomotopyWithSimplified (initialization) failed. Error: No system for the symbolic initialization was generated