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 3.92/3.92, allocations: 403.3 MB / 415.4 MB, free: 12.88 MB / 330.7 MB Notification: Performance of FrontEnd - loaded program: time 4.109e-05/4.123e-05, allocations: 8 kB / 0.4992 GB, free: 13.21 MB / 426.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.6165/0.6166, allocations: 92.67 MB / 0.5897 GB, free: 14.33 MB / 490.7 MB Notification: Performance of FrontEnd - scodeFlatten: time 0.314/0.9307, allocations: 181.5 MB / 0.7669 GB, free: 8.586 MB / 0.6511 GB Notification: Performance of FrontEnd - mkProgramGraph: time 0.0004372/0.9312, allocations: 119.9 kB / 0.767 GB, free: 8.469 MB / 0.6511 GB Notification: Performance of FrontEnd - DAE generated: time 0.9691/1.9, allocations: 122.9 MB / 0.887 GB, free: 78.7 MB / 0.6511 GB Notification: Performance of FrontEnd: time 2.715e-06/1.9, allocations: 0 / 0.887 GB, free: 78.7 MB / 0.6511 GB Notification: Performance of Transformations before backend: time 0.0001778/1.901, allocations: 67.94 kB / 0.8871 GB, free: 78.64 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 0.01096/1.911, allocations: 2.693 MB / 0.8897 GB, free: 75.89 MB / 0.6511 GB Notification: Performance of prepare preOptimizeDAE: time 4.908e-05/1.912, allocations: 12.03 kB / 0.8898 GB, free: 75.88 MB / 0.6511 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.001863/1.913, allocations: 488.3 kB / 0.8902 GB, free: 75.39 MB / 0.6511 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.02147/1.935, allocations: 2.075 MB / 0.8922 GB, free: 73.3 MB / 0.6511 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.00679/1.942, allocations: 1.997 MB / 0.8942 GB, free: 71.26 MB / 0.6511 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003037/1.942, allocations: 238.2 kB / 0.8944 GB, free: 71.03 MB / 0.6511 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.001882/1.944, allocations: 304 kB / 0.8947 GB, free: 70.73 MB / 0.6511 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01797/1.962, allocations: 5.35 MB / 0.8999 GB, free: 65.27 MB / 0.6511 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0001293/1.962, allocations: 0 / 0.8999 GB, free: 65.27 MB / 0.6511 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.001156/1.963, allocations: 135.9 kB / 0.9001 GB, free: 65.14 MB / 0.6511 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0008473/1.964, allocations: 293.4 kB / 0.9003 GB, free: 64.85 MB / 0.6511 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01563/1.98, allocations: 5.027 MB / 0.9053 GB, free: 59.81 MB / 0.6511 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.04682/2.027, allocations: 18.46 MB / 0.9233 GB, free: 40.82 MB / 0.6511 GB Notification: Performance of preOpt comSubExp (simulation): time 0.01275/2.04, allocations: 4.971 MB / 0.9281 GB, free: 35.51 MB / 0.6511 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.008632/2.048, allocations: 2.314 MB / 0.9304 GB, free: 33.18 MB / 0.6511 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0005949/2.049, allocations: 135 kB / 0.9305 GB, free: 33.03 MB / 0.6511 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 6.07e-05/2.049, allocations: 68.48 kB / 0.9306 GB, free: 32.95 MB / 0.6511 GB Notification: Performance of pre-optimization done (n=230): time 8.255e-06/2.049, allocations: 0 / 0.9306 GB, free: 32.95 MB / 0.6511 GB Notification: Performance of matching and sorting (n=311): time 0.2635/2.313, allocations: 30.99 MB / 0.9609 GB, free: 1.953 MB / 0.6511 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001139/2.313, allocations: 243.9 kB / 0.9611 GB, free: 1.664 MB / 0.6511 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003074/2.316, allocations: 1.153 MB / 0.9622 GB, free: 0.4961 MB / 0.6511 GB Notification: Performance of collectPreVariables (initialization): time 0.0009382/2.317, allocations: 81.64 kB / 0.9623 GB, free: 420 kB / 0.6511 GB Notification: Performance of collectInitialEqns (initialization): time 0.00143/2.318, allocations: 1.246 MB / 0.9635 GB, free: 15.14 MB / 0.6667 GB Notification: Performance of collectInitialBindings (initialization): time 0.002256/2.321, allocations: 1.04 MB / 0.9645 GB, free: 14.09 MB / 0.6667 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0006411/2.321, allocations: 64 kB / 0.9646 GB, free: 14.03 MB / 0.6667 GB Notification: Performance of setup shared object (initialization): time 0.0004439/2.322, allocations: 440.7 kB / 0.965 GB, free: 13.59 MB / 0.6667 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.008296/2.33, allocations: 2.232 MB / 0.9672 GB, free: 11.36 MB / 0.6667 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.007667/2.338, allocations: 2.934 MB / 0.9701 GB, free: 8.148 MB / 0.6667 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.007429/2.345, allocations: 2.65 MB / 0.9726 GB, free: 5.477 MB / 0.6667 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.395e-05/2.345, allocations: 4 kB / 0.9726 GB, free: 5.473 MB / 0.6667 GB Notification: Performance of matching and sorting (n=412) (initialization): time 0.03138/2.377, allocations: 8.42 MB / 0.9809 GB, free: 13 MB / 0.6823 GB Notification: Performance of prepare postOptimizeDAE: time 0.003214/2.38, allocations: 7.326 MB / 0.988 GB, free: 5.094 MB / 0.6823 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.471e-05/2.38, allocations: 20 kB / 0.988 GB, free: 5.074 MB / 0.6823 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.04882/2.429, allocations: 6.719 MB / 0.9946 GB, free: 14.34 MB / 0.698 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.007562/2.437, allocations: 0.8228 MB / 0.9954 GB, free: 13.52 MB / 0.698 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0472/2.484, allocations: 16.65 MB / 1.012 GB, free: 12.69 MB / 0.7136 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.007375/2.491, allocations: 0.5068 MB / 1.012 GB, free: 12.18 MB / 0.7136 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001169/2.492, allocations: 175.9 kB / 1.012 GB, free: 12.01 MB / 0.7136 GB Notification: Performance of prepare postOptimizeDAE: time 1.725e-05/2.492, allocations: 4 kB / 1.012 GB, free: 12.01 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 0.00876/2.501, allocations: 2.715 MB / 1.015 GB, free: 9.27 MB / 0.7136 GB Error: post-optimization module replaceHomotopyWithSimplified (initialization) failed. Error: No system for the symbolic initialization was generated