Running command: "" <> buildModelFMU(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DD,fileNamePrefix="Buildings_latest_Buildings_Electrical_AC_ThreePhasesUnbalanced_Validation_IEEETests_Test4NodesFeeder_UnbalancedStepDown_DD",fmuType="me",version="2.0",platforms={"static"})
Notification: Performance of loadModel(Buildings): time 4.187/4.187, allocations: 464.6 MB / 476.8 MB, free: 2.184 MB / 378.7 MB
Notification: Performance of FrontEnd - loaded program: time 4.745e-05/4.753e-05, allocations: 8 kB / 0.5732 GB, free: 5.582 MB / 458.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.2724/0.2725, allocations: 107.2 MB / 0.6779 GB, free: 10.24 MB / 0.5573 GB
Notification: Performance of FrontEnd - scodeFlatten: time 1.073/1.345, allocations: 192.9 MB / 0.8663 GB, free: 11.03 MB / 0.6667 GB
Notification: Performance of FrontEnd - mkProgramGraph: time 0.0005631/1.346, allocations: 114.2 kB / 0.8664 GB, free: 10.96 MB / 0.6667 GB
Notification: Performance of FrontEnd - DAE generated: time 0.5446/1.89, allocations: 124 MB / 0.9875 GB, free: 9.035 MB / 0.7761 GB
Notification: Performance of FrontEnd: time 1.984e-06/1.891, allocations: 0 / 0.9875 GB, free: 9.035 MB / 0.7761 GB
Notification: Performance of Transformations before backend: time 0.0002201/1.891, allocations: 67.98 kB / 0.9876 GB, free: 8.969 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 0.01202/1.903, allocations: 2.701 MB / 0.9902 GB, free: 6.211 MB / 0.7761 GB
Notification: Performance of prepare preOptimizeDAE: time 5.601e-05/1.903, allocations: 12.03 kB / 0.9902 GB, free: 6.199 MB / 0.7761 GB
Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.00246/1.905, allocations: 488.3 kB / 0.9907 GB, free: 5.711 MB / 0.7761 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.02304/1.928, allocations: 2.091 MB / 0.9927 GB, free: 3.613 MB / 0.7761 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.007383/1.936, allocations: 1.997 MB / 0.9947 GB, free: 1.57 MB / 0.7761 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003684/1.936, allocations: 238.2 kB / 0.9949 GB, free: 1.336 MB / 0.7761 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.001875/1.938, allocations: 307.9 kB / 0.9952 GB, free: 1.035 MB / 0.7761 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.01969/1.958, allocations: 5.315 MB / 1 GB, free: 11.61 MB / 0.7917 GB
Notification: Performance of preOpt findStateOrder (simulation): time 0.0001205/1.958, allocations: 4 kB / 1 GB, free: 11.61 MB / 0.7917 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.001093/1.959, allocations: 132 kB / 1.001 GB, free: 11.48 MB / 0.7917 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0009412/1.96, allocations: 285.3 kB / 1.001 GB, free: 11.2 MB / 0.7917 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01702/1.977, allocations: 4.977 MB / 1.006 GB, free: 6.215 MB / 0.7917 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.05727/2.034, allocations: 24.86 MB / 1.03 GB, free: 11.3 MB / 0.823 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.01143/2.046, allocations: 4.94 MB / 1.035 GB, free: 6 MB / 0.823 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.00656/2.053, allocations: 2.306 MB / 1.037 GB, free: 3.676 MB / 0.823 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0004282/2.053, allocations: 139 kB / 1.037 GB, free: 3.52 MB / 0.823 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 7.081e-05/2.053, allocations: 68.48 kB / 1.037 GB, free: 3.445 MB / 0.823 GB
Notification: Performance of pre-optimization done (n=230): time 5.691e-06/2.053, allocations: 0 / 1.037 GB, free: 3.445 MB / 0.823 GB
Notification: Performance of matching and sorting (n=311): time 0.2504/2.304, allocations: 30.98 MB / 1.067 GB, free: 4.461 MB / 0.8542 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001499/2.304, allocations: 243.9 kB / 1.068 GB, free: 4.172 MB / 0.8542 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002686/2.306, allocations: 1.157 MB / 1.069 GB, free: 3 MB / 0.8542 GB
Notification: Performance of collectPreVariables (initialization): time 0.0008231/2.307, allocations: 73.7 kB / 1.069 GB, free: 2.922 MB / 0.8542 GB
Notification: Performance of collectInitialEqns (initialization): time 0.001261/2.309, allocations: 1.258 MB / 1.07 GB, free: 1.645 MB / 0.8542 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0019/2.31, allocations: 1.04 MB / 1.071 GB, free: 0.5898 MB / 0.8542 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0005796/2.311, allocations: 68 kB / 1.071 GB, free: 0.5234 MB / 0.8542 GB
Notification: Performance of setup shared object (initialization): time 0.0003833/2.312, allocations: 440.7 kB / 1.072 GB, free: 88 kB / 0.8542 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.006592/2.318, allocations: 2.228 MB / 1.074 GB, free: 13.86 MB / 0.8698 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.007352/2.326, allocations: 2.904 MB / 1.077 GB, free: 10.68 MB / 0.8698 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.007386/2.333, allocations: 2.656 MB / 1.079 GB, free: 8.004 MB / 0.8698 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.428e-05/2.333, allocations: 7.938 kB / 1.079 GB, free: 7.996 MB / 0.8698 GB
Notification: Performance of matching and sorting (n=412) (initialization): time 0.03048/2.364, allocations: 8.369 MB / 1.087 GB, free: 15.57 MB / 0.8855 GB
Notification: Performance of prepare postOptimizeDAE: time 0.003133/2.367, allocations: 7.327 MB / 1.095 GB, free: 7.668 MB / 0.8855 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.411e-05/2.367, allocations: 20 kB / 1.095 GB, free: 7.648 MB / 0.8855 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.04766/2.415, allocations: 6.751 MB / 1.101 GB, free: 0.8828 MB / 0.8855 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.007728/2.422, allocations: 0.8306 MB / 1.102 GB, free: 52 kB / 0.8855 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.6487/3.071, allocations: 16.65 MB / 1.118 GB, free: 251.5 MB / 0.8855 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.007663/3.079, allocations: 0.5027 MB / 1.119 GB, free: 251.5 MB / 0.8855 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001339/3.08, allocations: 179.7 kB / 1.119 GB, free: 251.5 MB / 0.8855 GB
Notification: Performance of prepare postOptimizeDAE: time 1.727e-05/3.08, allocations: 4 kB / 1.119 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 0.008534/3.089, allocations: 2.682 MB / 1.122 GB, free: 251.4 MB / 0.8855 GB
Error: post-optimization module replaceHomotopyWithSimplified (initialization) failed.
Error: No system for the symbolic initialization was generated