Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepUp.YD.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo", uses=false) Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo) Using package Modelica with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo) Using package Complex with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo) Using package ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Running command: "" <> buildModelFMU(IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepUp.YD,fileNamePrefix="IBPSA_latest_IBPSA_Electrical_AC_ThreePhasesUnbalanced_Validation_IEEETests_Test4NodesFeeder_UnbalancedStepUp_YD",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepUp.YD,fileNamePrefix="IBPSA_latest_IBPSA_Electrical_AC_ThreePhasesUnbalanced_Validation_IEEETests_Test4NodesFeeder_UnbalancedStepUp_YD",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001327/0.001327, allocations: 104.3 kB / 16.27 MB, free: 5.98 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001091/0.001091, allocations: 195 kB / 17.2 MB, free: 5.609 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.293/1.293, allocations: 222.9 MB / 240.9 MB, free: 15.02 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo): time 0.7566/0.7566, allocations: 122.9 MB / 413.9 MB, free: 15.86 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001463/0.001463, allocations: 60.05 kB / 0.4912 GB, free: 7.32 MB / 414.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3475/0.349, allocations: 77.93 MB / 0.5673 GB, free: 32.62 MB / 446.1 MB Notification: Performance of NFInst.instantiate(IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepUp.YD): time 0.02073/0.3698, allocations: 18.24 MB / 0.5851 GB, free: 20.49 MB / 446.1 MB Notification: Performance of NFInst.instExpressions: time 0.01092/0.3808, allocations: 6.868 MB / 0.5918 GB, free: 15.12 MB / 446.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.002914/0.3837, allocations: 55.31 kB / 0.5919 GB, free: 15.12 MB / 446.1 MB Notification: Performance of NFTyping.typeComponents: time 0.005526/0.3893, allocations: 1.471 MB / 0.5933 GB, free: 13.97 MB / 446.1 MB Notification: Performance of NFTyping.typeBindings: time 0.005426/0.3947, allocations: 1.444 MB / 0.5947 GB, free: 12.83 MB / 446.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.004746/0.3995, allocations: 1.273 MB / 0.596 GB, free: 11.83 MB / 446.1 MB Notification: Performance of NFFlatten.flatten: time 0.007807/0.4073, allocations: 5.465 MB / 0.6013 GB, free: 7.914 MB / 446.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.01049/0.4178, allocations: 7.244 MB / 0.6084 GB, free: 0.6211 MB / 446.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.005305/0.4232, allocations: 2.357 MB / 0.6107 GB, free: 14.25 MB / 462.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.007852/0.4311, allocations: 2.972 MB / 0.6136 GB, free: 11.27 MB / 462.1 MB Notification: Performance of NFPackage.collectConstants: time 0.002031/0.4332, allocations: 0.5156 MB / 0.6141 GB, free: 10.76 MB / 462.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.004773/0.438, allocations: 1.272 MB / 0.6153 GB, free: 9.484 MB / 462.1 MB Notification: Performance of NFScalarize.scalarize: time 0.004713/0.4427, allocations: 2.257 MB / 0.6176 GB, free: 7.223 MB / 462.1 MB Notification: Performance of NFVerifyModel.verify: time 0.00653/0.4493, allocations: 2.187 MB / 0.6197 GB, free: 5.027 MB / 462.1 MB Notification: Performance of NFConvertDAE.convert: time 0.01327/0.4626, allocations: 7.729 MB / 0.6272 GB, free: 13.28 MB / 478.1 MB Notification: Performance of FrontEnd - DAE generated: time 5.29e-06/0.4626, allocations: 0 / 0.6272 GB, free: 13.28 MB / 478.1 MB Notification: Performance of FrontEnd: time 1.783e-06/0.4626, allocations: 4 kB / 0.6272 GB, free: 13.27 MB / 478.1 MB Notification: Performance of Transformations before backend: time 0.000252/0.4629, allocations: 3.938 kB / 0.6272 GB, free: 13.27 MB / 478.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 994 * Number of variables: 994 Notification: Performance of Generate backend data structure: time 0.01004/0.4729, allocations: 3.823 MB / 0.631 GB, free: 9.387 MB / 478.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.814e-05/0.473, allocations: 11.97 kB / 0.631 GB, free: 9.375 MB / 478.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.001363/0.4744, allocations: 0.5543 MB / 0.6315 GB, free: 8.812 MB / 478.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01325/0.4876, allocations: 2.407 MB / 0.6339 GB, free: 6.398 MB / 478.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004359/0.492, allocations: 2.174 MB / 0.636 GB, free: 4.18 MB / 478.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001797/0.4922, allocations: 267.3 kB / 0.6363 GB, free: 3.918 MB / 478.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0007121/0.4929, allocations: 348 kB / 0.6366 GB, free: 3.578 MB / 478.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01312/0.5061, allocations: 7.155 MB / 0.6436 GB, free: 12.32 MB / 494.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 6.305e-05/0.5061, allocations: 7.938 kB / 0.6436 GB, free: 12.32 MB / 494.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0004146/0.5066, allocations: 148 kB / 0.6437 GB, free: 12.17 MB / 494.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0004316/0.507, allocations: 330.1 kB / 0.644 GB, free: 11.85 MB / 494.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01545/0.5225, allocations: 7.048 MB / 0.6509 GB, free: 4.789 MB / 494.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.03248/0.555, allocations: 26.68 MB / 0.677 GB, free: 7.926 MB / 0.5137 GB Notification: Performance of preOpt comSubExp (simulation): time 0.008061/0.5631, allocations: 4.987 MB / 0.6819 GB, free: 2.633 MB / 0.5137 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.005711/0.5688, allocations: 2.6 MB / 0.6844 GB, free: 20 kB / 0.5137 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002488/0.5691, allocations: 127 kB / 0.6845 GB, free: 15.88 MB / 0.5294 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.78e-05/0.5691, allocations: 64.5 kB / 0.6846 GB, free: 15.8 MB / 0.5294 GB Notification: Performance of pre-optimization done (n=208): time 4.218e-06/0.5691, allocations: 4 kB / 0.6846 GB, free: 15.8 MB / 0.5294 GB Warning: The linear system: 1 : line2.v1_n[1] - line2.v1_p[1] = line2.Z11[1] * line2.i1[1] - line2.Z11[2] * line2.i1[2] + line2.Z12[1] * line2.i2[1] - line2.Z12[2] * line2.i2[2] + line2.Z13[1] * line2.i3[1] - line2.Z13[2] * line2.i3[2] 2 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[1] 3 : line2.v2_n[1] - line2.v2_p[1] = line2.Z21[1] * line2.i1[1] - line2.Z21[2] * line2.i1[2] + line2.Z22[1] * line2.i2[1] - line2.Z22[2] * line2.i2[2] + line2.Z23[1] * line2.i3[1] - line2.Z23[2] * line2.i3[2] 4 : transformer.conv2.V2[1] = line2.v1_n[1] - line2.v2_n[1] [ 1.0 , 0.0 , 0.0 , -1.0 ; 0.0 , 0.0 , 1.0 , -1.0 ; 0.0 , 1.0 , -1.0 , 0.0 ; -1.0 , 1.0 , 0.0 , 0.0 ] * [ line2.v1_n[1] ; line2.v2_n[1] ; line2.v2_p[1] ; line2.v1_p[1] ] = [ line2.Z11[1] * line2.i1[1] + line2.Z13[1] * line2.i3[1] + line2.Z12[1] * line2.i2[1] - line2.Z11[2] * line2.i1[2] - line2.Z13[2] * line2.i3[2] - line2.Z12[2] * line2.i2[2] ; -loadRL.load1.v[1] ; line2.Z21[1] * line2.i1[1] + line2.Z23[1] * line2.i3[1] + line2.Z22[1] * line2.i2[1] - line2.Z21[2] * line2.i1[2] - line2.Z23[2] * line2.i3[2] - line2.Z22[2] * line2.i2[2] ; -transformer.conv2.V2[1] ] might be structurally or numerically singular for variable line2.v1_p[1] since U(4,4) = 0.0. It might be hard to solve. Compilation continues anyway. Notification: Performance of matching and sorting (n=271): time 0.1129/0.6821, allocations: 30.95 MB / 0.7148 GB, free: 0.7578 MB / 0.545 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001143/0.6822, allocations: 243.5 kB / 0.715 GB, free: 484 kB / 0.545 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002144/0.6843, allocations: 1.469 MB / 0.7165 GB, free: 14.99 MB / 0.5606 GB Notification: Performance of collectPreVariables (initialization): time 0.0005183/0.6849, allocations: 65.7 kB / 0.7165 GB, free: 14.92 MB / 0.5606 GB Notification: Performance of collectInitialEqns (initialization): time 0.0008819/0.6858, allocations: 1.501 MB / 0.718 GB, free: 13.4 MB / 0.5606 GB Notification: Performance of collectInitialBindings (initialization): time 0.0009681/0.6867, allocations: 0.9165 MB / 0.7189 GB, free: 12.47 MB / 0.5606 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001084/0.6878, allocations: 0.6357 MB / 0.7195 GB, free: 11.83 MB / 0.5606 GB Notification: Performance of setup shared object (initialization): time 8.593e-05/0.6879, allocations: 305.1 kB / 0.7198 GB, free: 11.53 MB / 0.5606 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.005905/0.6938, allocations: 2.69 MB / 0.7224 GB, free: 8.828 MB / 0.5606 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.006827/0.7007, allocations: 3.567 MB / 0.7259 GB, free: 4.879 MB / 0.5606 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.01263/0.7134, allocations: 6.395 MB / 0.7322 GB, free: 14.09 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.497e-05/0.7134, allocations: 4 kB / 0.7322 GB, free: 14.08 MB / 0.5762 GB Warning: The linear system: 1 : line2.v1_n[1] - line2.v1_p[1] = line2.Z11[1] * line2.i1[1] - line2.Z11[2] * line2.i1[2] + line2.Z12[1] * line2.i2[1] - line2.Z12[2] * line2.i2[2] + line2.Z13[1] * line2.i3[1] - line2.Z13[2] * line2.i3[2] 2 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[1] 3 : line2.v2_n[1] - line2.v2_p[1] = line2.Z21[1] * line2.i1[1] - line2.Z21[2] * line2.i1[2] + line2.Z22[1] * line2.i2[1] - line2.Z22[2] * line2.i2[2] + line2.Z23[1] * line2.i3[1] - line2.Z23[2] * line2.i3[2] 4 : transformer.conv2.V2[1] = line2.v1_n[1] - line2.v2_n[1] [ 1.0 , 0.0 , 0.0 , -1.0 ; 0.0 , 0.0 , 1.0 , -1.0 ; 0.0 , 1.0 , -1.0 , 0.0 ; -1.0 , 1.0 , 0.0 , 0.0 ] * [ line2.v1_n[1] ; line2.v2_n[1] ; line2.v2_p[1] ; line2.v1_p[1] ] = [ line2.Z11[1] * line2.i1[1] + line2.Z13[1] * line2.i3[1] + line2.Z12[1] * line2.i2[1] - line2.Z11[2] * line2.i1[2] - line2.Z13[2] * line2.i3[2] - line2.Z12[2] * line2.i2[2] ; -loadRL.load1.v[1] ; line2.Z21[1] * line2.i1[1] + line2.Z23[1] * line2.i3[1] + line2.Z22[1] * line2.i2[1] - line2.Z21[2] * line2.i1[2] - line2.Z23[2] * line2.i3[2] - line2.Z22[2] * line2.i2[2] ; -transformer.conv2.V2[1] ] might be structurally or numerically singular for variable line2.v1_p[1] since U(4,4) = 0.0. It might be hard to solve. Compilation continues anyway. Notification: Performance of matching and sorting (n=410) (initialization): time 0.02781/0.7412, allocations: 10.99 MB / 0.7429 GB, free: 2.992 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 4.075e-05/0.7413, allocations: 16 kB / 0.7429 GB, free: 2.977 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.367e-05/0.7413, allocations: 28.56 kB / 0.7429 GB, free: 2.949 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.2983/1.04, allocations: 5.576 MB / 0.7484 GB, free: 152.7 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004573/1.044, allocations: 0.9958 MB / 0.7494 GB, free: 152.7 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.03856/1.083, allocations: 28.18 MB / 0.7769 GB, free: 138.8 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004345/1.087, allocations: 0.5719 MB / 0.7774 GB, free: 138.7 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003763/1.088, allocations: 150.5 kB / 0.7776 GB, free: 138.7 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.006452/1.094, allocations: 3.984 MB / 0.7815 GB, free: 137.1 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.005516/1.1, allocations: 3.53 MB / 0.7849 GB, free: 134.7 MB / 0.5762 GB Error: Initialization problem is structural singular. Please, check the initial conditions. Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.07793/1.178, allocations: 24.67 MB / 0.809 GB, free: 111.7 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.635e-05/1.178, allocations: 8 kB / 0.809 GB, free: 111.7 MB / 0.5762 GB Warning: The linear system: 1 : transformer.conv1.V2[2] = line2.v3_n[2] - line2.v1_n[2] 2 : line2.v3_n[2] - line2.v3_p[2] = line2.Z31[1] * line2.i1[2] + line2.Z31[2] * line2.i1[1] + line2.Z32[1] * line2.i2[2] + line2.Z32[2] * line2.i2[1] + line2.Z33[1] * line2.i3[2] + line2.Z33[2] * line2.i3[1] 3 : loadRL.load3.v[2] = line2.v3_p[2] - line2.v1_p[2] 4 : line2.v1_n[2] - line2.v1_p[2] = line2.Z11[1] * line2.i1[2] + line2.Z11[2] * line2.i1[1] + line2.Z12[1] * line2.i2[2] + line2.Z12[2] * line2.i2[1] + line2.Z13[1] * line2.i3[2] + line2.Z13[2] * line2.i3[1] [ 1.0 , 0.0 , 0.0 , -1.0 ; 0.0 , 0.0 , -1.0 , 1.0 ; 0.0 , 1.0 , -1.0 , 0.0 ; 1.0 , -1.0 , 0.0 , 0.0 ] * [ line2.v1_n[2] ; line2.v1_p[2] ; line2.v3_p[2] ; line2.v3_n[2] ] = [ -transformer.conv1.V2[2] ; line2.Z31[1] * line2.i1[2] + line2.Z33[1] * line2.i3[2] + line2.Z33[2] * line2.i3[1] + line2.Z32[2] * line2.i2[1] + line2.Z32[1] * line2.i2[2] + line2.Z31[2] * line2.i1[1] ; -loadRL.load3.v[2] ; line2.Z11[1] * line2.i1[2] + line2.Z13[1] * line2.i3[2] + line2.Z13[2] * line2.i3[1] + line2.Z12[2] * line2.i2[1] + line2.Z12[1] * line2.i2[2] + line2.Z11[2] * line2.i1[1] ] might be structurally or numerically singular for variable line2.v3_n[2] since U(4,4) = 0.0. It might be hard to solve. Compilation continues anyway. Warning: The linear system: 1 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[1] 2 : line2.v1_n[1] - line2.v1_p[1] = line2.Z11[1] * line2.i1[1] - line2.Z11[2] * line2.i1[2] + line2.Z12[1] * line2.i2[1] - line2.Z12[2] * line2.i2[2] + line2.Z13[1] * line2.i3[1] - line2.Z13[2] * line2.i3[2] 3 : transformer.conv2.V2[1] = line2.v1_n[1] - line2.v2_n[1] 4 : line2.v2_n[1] - line2.v2_p[1] = line2.Z21[1] * line2.i1[1] - line2.Z21[2] * line2.i1[2] + line2.Z22[1] * line2.i2[1] - line2.Z22[2] * line2.i2[2] + line2.Z23[1] * line2.i3[1] - line2.Z23[2] * line2.i3[2] [ 1.0 , 0.0 , 0.0 , -1.0 ; 0.0 , 0.0 , 1.0 , -1.0 ; 0.0 , 1.0 , -1.0 , 0.0 ; -1.0 , 1.0 , 0.0 , 0.0 ] * [ line2.v2_p[1] ; line2.v2_n[1] ; line2.v1_n[1] ; line2.v1_p[1] ] = [ -loadRL.load1.v[1] ; line2.Z11[1] * line2.i1[1] + line2.Z13[1] * line2.i3[1] + line2.Z12[1] * line2.i2[1] - line2.Z11[2] * line2.i1[2] - line2.Z13[2] * line2.i3[2] - line2.Z12[2] * line2.i2[2] ; -transformer.conv2.V2[1] ; line2.Z21[1] * line2.i1[1] + line2.Z23[1] * line2.i3[1] + line2.Z22[1] * line2.i2[1] - line2.Z21[2] * line2.i1[2] - line2.Z23[2] * line2.i3[2] - line2.Z22[2] * line2.i2[2] ] might be structurally or numerically singular for variable line2.v1_p[1] since U(4,4) = 0.0. It might be hard to solve. Compilation continues anyway. Notification: Performance of matching and sorting (n=410) (initialization_lambda0): time 0.02148/1.199, allocations: 10.53 MB / 0.8193 GB, free: 101.1 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 2.893e-05/1.199, allocations: 19.94 kB / 0.8193 GB, free: 101.1 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.723e-05/1.199, allocations: 28 kB / 0.8193 GB, free: 101 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.01298/1.212, allocations: 4.34 MB / 0.8236 GB, free: 96.68 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004055/1.216, allocations: 1.037 MB / 0.8246 GB, free: 95.64 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.02683/1.243, allocations: 27.15 MB / 0.8511 GB, free: 67.82 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004155/1.247, allocations: 0.5574 MB / 0.8517 GB, free: 67.26 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003078/1.248, allocations: 151.9 kB / 0.8518 GB, free: 67.11 MB / 0.5762 GB Warning: Assuming fixed start value for the following 2 variables: node4.wyeToDelta.delta.phase[3].v[2]:VARIABLE(flow=false unit = "V" fixed = true ) "Voltage vector" type: Real [3,2] node4.wyeToDelta.delta.phase[2].v[1]:VARIABLE(flow=false unit = "V" fixed = true ) "Voltage vector" type: Real [3,2] Warning: The initial conditions are over specified. The following 2 initial equations are redundant, so they are removed from the initialization_lambda0 system: 0.0 = (-line2.i1[2]) - line2.i2[2] - line2.i3[2] 0.0 = (-line2.i1[1]) - line2.i2[1] - line2.i3[1]. Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 119 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (301): * Single equations (assignments): 298 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 3 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(1,3,100.0%), (10,44,70.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(10,44)} Notification: Performance of prepare postOptimizeDAE: time 0.0008572/1.248, allocations: 401.7 kB / 0.8522 GB, free: 66.73 MB / 0.5762 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0004767/1.249, allocations: 206.8 kB / 0.8524 GB, free: 66.53 MB / 0.5762 GB Warning: The linear system: 1 : line2.v1_n[1] - line2.v1_p[1] = line2.Z11[1] * line2.i1[1] - line2.Z11[2] * line2.i1[2] + line2.Z12[1] * line2.i2[1] - line2.Z12[2] * line2.i2[2] + line2.Z13[1] * line2.i3[1] - line2.Z13[2] * line2.i3[2] 2 : transformer.conv2.V2[1] = line2.v1_n[1] - line2.v2_n[1] 3 : line2.v2_n[1] - line2.v2_p[1] = line2.Z21[1] * line2.i1[1] - line2.Z21[2] * line2.i1[2] + line2.Z22[1] * line2.i2[1] - line2.Z22[2] * line2.i2[2] + line2.Z23[1] * line2.i3[1] - line2.Z23[2] * line2.i3[2] 4 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[1] [ -1.0 , 0.0 , 0.0 , 1.0 ; 0.0 , 0.0 , 1.0 , -1.0 ; 0.0 , -1.0 , 1.0 , 0.0 ; -1.0 , 1.0 , 0.0 , 0.0 ] * [ line2.v1_p[1] ; line2.v2_p[1] ; line2.v2_n[1] ; line2.v1_n[1] ] = [ line2.Z11[1] * line2.i1[1] + line2.Z13[1] * line2.i3[1] + line2.Z12[1] * line2.i2[1] - line2.Z11[2] * line2.i1[2] - line2.Z13[2] * line2.i3[2] - line2.Z12[2] * line2.i2[2] ; -transformer.conv2.V2[1] ; line2.Z21[1] * line2.i1[1] + line2.Z23[1] * line2.i3[1] + line2.Z22[1] * line2.i2[1] - line2.Z21[2] * line2.i1[2] - line2.Z23[2] * line2.i3[2] - line2.Z22[2] * line2.i2[2] ; -loadRL.load1.v[1] ] might be structurally or numerically singular for variable line2.v1_n[1] since U(4,4) = 0.0. It might be hard to solve. Compilation continues anyway. Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.02483/1.274, allocations: 10.16 MB / 0.8623 GB, free: 56.3 MB / 0.5762 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.434e-05/1.274, allocations: 28 kB / 0.8623 GB, free: 56.27 MB / 0.5762 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.565e-05/1.274, allocations: 12 kB / 0.8623 GB, free: 56.26 MB / 0.5762 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 7.025e-05/1.274, allocations: 15.95 kB / 0.8624 GB, free: 56.25 MB / 0.5762 GB Warning: The linear system: 1 : line2.v2_n[1] - line2.v2_p[1] = line2.Z21[1] * line2.i1[1] - line2.Z21[2] * line2.i1[2] + line2.Z22[1] * line2.i2[1] - line2.Z22[2] * line2.i2[2] + line2.Z23[1] * line2.i3[1] - line2.Z23[2] * line2.i3[2] 2 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[1] 3 : line2.v1_n[1] - line2.v1_p[1] = line2.Z11[1] * line2.i1[1] - line2.Z11[2] * line2.i1[2] + line2.Z12[1] * line2.i2[1] - line2.Z12[2] * line2.i2[2] + line2.Z13[1] * line2.i3[1] - line2.Z13[2] * line2.i3[2] 4 : transformer.conv2.V2[1] = line2.v1_n[1] - line2.v2_n[1] [ 1.0 , 0.0 , 0.0 , -1.0 ; 0.0 , 0.0 , -1.0 , 1.0 ; 0.0 , 1.0 , -1.0 , 0.0 ; 1.0 , -1.0 , 0.0 , 0.0 ] * [ line2.v2_n[1] ; line2.v1_n[1] ; line2.v1_p[1] ; line2.v2_p[1] ] = [ line2.Z21[1] * line2.i1[1] + line2.Z23[1] * line2.i3[1] + line2.Z22[1] * line2.i2[1] - line2.Z21[2] * line2.i1[2] - line2.Z23[2] * line2.i3[2] - line2.Z22[2] * line2.i2[2] ; -loadRL.load1.v[1] ; line2.Z11[1] * line2.i1[1] + line2.Z13[1] * line2.i3[1] + line2.Z12[1] * line2.i2[1] - line2.Z11[2] * line2.i1[2] - line2.Z13[2] * line2.i3[2] - line2.Z12[2] * line2.i2[2] ; -transformer.conv2.V2[1] ] might be structurally or numerically singular for variable line2.v2_p[1] since U(4,4) = 0.0. It might be hard to solve. Compilation continues anyway. Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.03103/1.305, allocations: 16.36 MB / 0.8783 GB, free: 39.71 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.363e-05/1.305, allocations: 11.94 kB / 0.8783 GB, free: 39.7 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.003161/1.308, allocations: 0.7336 MB / 0.8791 GB, free: 38.96 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.01632/1.325, allocations: 5.2 MB / 0.8841 GB, free: 33.75 MB / 0.5762 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0005283/1.325, allocations: 75.95 kB / 0.8842 GB, free: 33.67 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.03148/1.357, allocations: 27.22 MB / 0.9108 GB, free: 5.965 MB / 0.5762 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.242e-06/1.357, allocations: 12.03 kB / 0.9108 GB, free: 5.953 MB / 0.5762 GB Warning: The linear system: 1 : line2.v2_n[1] - line2.v2_p[1] = line2.Z21[1] * line2.i1[1] - line2.Z21[2] * line2.i1[2] + line2.Z22[1] * line2.i2[1] - line2.Z22[2] * line2.i2[2] + line2.Z23[1] * line2.i3[1] - line2.Z23[2] * line2.i3[2] 2 : transformer.conv2.V2[1] = line2.v1_n[1] - line2.v2_n[1] 3 : line2.v1_n[1] - line2.v1_p[1] = line2.Z11[1] * line2.i1[1] - line2.Z11[2] * line2.i1[2] + line2.Z12[1] * line2.i2[1] - line2.Z12[2] * line2.i2[2] + line2.Z13[1] * line2.i3[1] - line2.Z13[2] * line2.i3[2] 4 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[1] [ -1.0 , 0.0 , 0.0 , 1.0 ; 0.0 , 0.0 , -1.0 , 1.0 ; 0.0 , -1.0 , 1.0 , 0.0 ; 1.0 , -1.0 , 0.0 , 0.0 ] * [ line2.v2_p[1] ; line2.v1_p[1] ; line2.v1_n[1] ; line2.v2_n[1] ] = [ line2.Z21[1] * line2.i1[1] + line2.Z23[1] * line2.i3[1] + line2.Z22[1] * line2.i2[1] - line2.Z21[2] * line2.i1[2] - line2.Z23[2] * line2.i3[2] - line2.Z22[2] * line2.i2[2] ; -transformer.conv2.V2[1] ; line2.Z11[1] * line2.i1[1] + line2.Z13[1] * line2.i3[1] + line2.Z12[1] * line2.i2[1] - line2.Z11[2] * line2.i1[2] - line2.Z13[2] * line2.i3[2] - line2.Z12[2] * line2.i2[2] ; -loadRL.load1.v[1] ] might be structurally or numerically singular for variable line2.v2_n[1] since U(4,4) = 0.0. It might be hard to solve. Compilation continues anyway. Notification: Performance of postOpt symbolicJacobian (simulation): time 0.02357/1.38, allocations: 10.13 MB / 0.9207 GB, free: 11.57 MB / 0.5919 GB Notification: Performance of postOpt removeConstants (simulation): time 0.002073/1.382, allocations: 0.721 MB / 0.9214 GB, free: 10.83 MB / 0.5919 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0005554/1.383, allocations: 54.34 kB / 0.9215 GB, free: 10.78 MB / 0.5919 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.003562/1.386, allocations: 0.5109 MB / 0.922 GB, free: 10.27 MB / 0.5919 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0008539/1.387, allocations: 230.3 kB / 0.9222 GB, free: 10.05 MB / 0.5919 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0002188/1.388, allocations: 95.95 kB / 0.9223 GB, free: 9.953 MB / 0.5919 GB Notification: Performance of sorting global known variables: time 0.001491/1.389, allocations: 1.004 MB / 0.9232 GB, free: 8.949 MB / 0.5919 GB Notification: Performance of sort global known variables: time 2.31e-07/1.389, allocations: 0 / 0.9232 GB, free: 8.949 MB / 0.5919 GB Notification: Performance of remove unused functions: time 0.005693/1.395, allocations: 1.855 MB / 0.9251 GB, free: 7.094 MB / 0.5919 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 34 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (165): * Single equations (assignments): 162 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 3 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(10,44,70.0%), (1,3,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(10,44)} Warning: The linear system: 1 : line2.v2_n[1] - line2.v2_p[1] = line2.Z21[1] * line2.i1[1] - line2.Z21[2] * line2.i1[2] + line2.Z22[1] * line2.i2[1] - line2.Z22[2] * line2.i2[2] + line2.Z23[1] * line2.i3[1] - line2.Z23[2] * line2.i3[2] 2 : transformer.conv2.V2[1] = line2.v1_n[1] - line2.v2_n[1] 3 : line2.v1_n[1] - line2.v1_p[1] = line2.Z11[1] * line2.i1[1] - line2.Z11[2] * line2.i1[2] + line2.Z12[1] * line2.i2[1] - line2.Z12[2] * line2.i2[2] + line2.Z13[1] * line2.i3[1] - line2.Z13[2] * line2.i3[2] 4 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[1] [ -1.0 , 0.0 , 0.0 , 1.0 ; 0.0 , 0.0 , -1.0 , 1.0 ; 0.0 , -1.0 , 1.0 , 0.0 ; 1.0 , -1.0 , 0.0 , 0.0 ] * [ line2.v2_p[1] ; line2.v1_p[1] ; line2.v1_n[1] ; line2.v2_n[1] ] = [ line2.Z21[1] * line2.i1[1] + line2.Z23[1] * line2.i3[1] + line2.Z22[1] * line2.i2[1] - line2.Z21[2] * line2.i1[2] - line2.Z23[2] * line2.i3[2] - line2.Z22[2] * line2.i2[2] ; -transformer.conv2.V2[1] ; line2.Z11[1] * line2.i1[1] + line2.Z13[1] * line2.i3[1] + line2.Z12[1] * line2.i2[1] - line2.Z11[2] * line2.i1[2] - line2.Z13[2] * line2.i3[2] - line2.Z12[2] * line2.i2[2] ; -loadRL.load1.v[1] ] might be structurally or numerically singular for variable line2.v2_n[1] since U(4,4) = 0.0. It might be hard to solve. Compilation continues anyway. Notification: Performance of Backend phase and start with SimCode phase: time 0.02553/1.42, allocations: 10.79 MB / 0.9356 GB, free: 12.05 MB / 0.6075 GB Notification: Performance of simCode: created initialization part: time 0.034/1.454, allocations: 14.4 MB / 0.9496 GB, free: 13.57 MB / 0.6231 GB Notification: Performance of simCode: created event and clocks part: time 1.225e-05/1.454, allocations: 0 / 0.9496 GB, free: 13.57 MB / 0.6231 GB Notification: Performance of simCode: created simulation system equations: time 0.01154/1.466, allocations: 4.379 MB / 0.9539 GB, free: 9.152 MB / 0.6231 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003845/1.47, allocations: 292.3 kB / 0.9542 GB, free: 8.875 MB / 0.6231 GB Warning: The linear system: 1 : line2.v1_n[1] - line2.v1_p[1] = line2.Z11[1] * line2.i1[1] - line2.Z11[2] * line2.i1[2] + line2.Z12[1] * line2.i2[1] - line2.Z12[2] * line2.i2[2] + line2.Z13[1] * line2.i3[1] - line2.Z13[2] * line2.i3[2] 2 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[1] 3 : line2.v2_n[1] - line2.v2_p[1] = line2.Z21[1] * line2.i1[1] - line2.Z21[2] * line2.i1[2] + line2.Z22[1] * line2.i2[1] - line2.Z22[2] * line2.i2[2] + line2.Z23[1] * line2.i3[1] - line2.Z23[2] * line2.i3[2] 4 : transformer.conv2.V2[1] = line2.v1_n[1] - line2.v2_n[1] [ 1.0 , 0.0 , 0.0 , -1.0 ; 0.0 , 0.0 , 1.0 , -1.0 ; 0.0 , 1.0 , -1.0 , 0.0 ; -1.0 , 1.0 , 0.0 , 0.0 ] * [ line2.v1_n[1] ; line2.v2_n[1] ; line2.v2_p[1] ; line2.v1_p[1] ] = [ line2.Z11[1] * line2.i1[1] + line2.Z13[1] * line2.i3[1] + line2.Z12[1] * line2.i2[1] - line2.Z11[2] * line2.i1[2] - line2.Z13[2] * line2.i3[2] - line2.Z12[2] * line2.i2[2] ; -loadRL.load1.v[1] ; line2.Z21[1] * line2.i1[1] + line2.Z23[1] * line2.i3[1] + line2.Z22[1] * line2.i2[1] - line2.Z21[2] * line2.i1[2] - line2.Z23[2] * line2.i3[2] - line2.Z22[2] * line2.i2[2] ; -transformer.conv2.V2[1] ] might be structurally or numerically singular for variable line2.v1_p[1] since U(4,4) = 0.0. It might be hard to solve. Compilation continues anyway. Warning: The linear system: 1 : line2.v1_n[1] - line2.v1_p[1] = line2.Z11[1] * line2.i1[1] - line2.Z11[2] * line2.i1[2] + line2.Z12[1] * line2.i2[1] - line2.Z12[2] * line2.i2[2] + line2.Z13[1] * line2.i3[1] - line2.Z13[2] * line2.i3[2] 2 : transformer.conv2.V2[1] = line2.v1_n[1] - line2.v2_n[1] 3 : line2.v2_n[1] - line2.v2_p[1] = line2.Z21[1] * line2.i1[1] - line2.Z21[2] * line2.i1[2] + line2.Z22[1] * line2.i2[1] - line2.Z22[2] * line2.i2[2] + line2.Z23[1] * line2.i3[1] - line2.Z23[2] * line2.i3[2] 4 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[1] [ -1.0 , 0.0 , 0.0 , 1.0 ; 0.0 , 0.0 , 1.0 , -1.0 ; 0.0 , -1.0 , 1.0 , 0.0 ; -1.0 , 1.0 , 0.0 , 0.0 ] * [ line2.v1_p[1] ; line2.v2_p[1] ; line2.v2_n[1] ; line2.v1_n[1] ] = [ line2.Z11[1] * line2.i1[1] + line2.Z13[1] * line2.i3[1] + line2.Z12[1] * line2.i2[1] - line2.Z11[2] * line2.i1[2] - line2.Z13[2] * line2.i3[2] - line2.Z12[2] * line2.i2[2] ; -transformer.conv2.V2[1] ; line2.Z21[1] * line2.i1[1] + line2.Z23[1] * line2.i3[1] + line2.Z22[1] * line2.i2[1] - line2.Z21[2] * line2.i1[2] - line2.Z23[2] * line2.i3[2] - line2.Z22[2] * line2.i2[2] ; -loadRL.load1.v[1] ] might be structurally or numerically singular for variable line2.v1_n[1] since U(4,4) = 0.0. It might be hard to solve. Compilation continues anyway. Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.3693/1.839, allocations: 44.16 MB / 0.9973 GB, free: 215.7 MB / 0.6544 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.003834/1.843, allocations: 2.855 MB / 1 GB, free: 214.9 MB / 0.6544 GB Notification: Performance of simCode: alias equations: time 0.005204/1.848, allocations: 1.657 MB / 1.002 GB, free: 214.8 MB / 0.6544 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001558/1.85, allocations: 1.224 MB / 1.003 GB, free: 214.8 MB / 0.6544 GB Notification: Performance of SimCode: time 9.82e-07/1.85, allocations: 1.344 kB / 1.003 GB, free: 214.8 MB / 0.6544 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.1317/1.982, allocations: 102.1 MB / 1.103 GB, free: 136.6 MB / 0.6544 GB Notification: Performance of buildModelFMU: Generate platform static: time 12.76/14.74, allocations: 16.41 kB / 1.103 GB, free: 136.6 MB / 0.6544 GB (rm -f IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepUp.YD.pipe ; mkfifo IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepUp.YD.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepUp.YD.pipe >> ../files/IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepUp.YD.sim & python3 -m fmpy simulate --output-file IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepUp.YD_res.csv --start-time 0 --stop-time 1 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.0004 IBPSA_latest_IBPSA_Electrical_AC_ThreePhasesUnbalanced_Validation_IEEETests_Test4NodesFeeder_UnbalancedStepUp_YD.fmu > IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepUp.YD.pipe 2>&1)