Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepUp.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.BalancedStepUp.YD,fileNamePrefix="IBPSA_latest_IBPSA_Electrical_AC_ThreePhasesUnbalanced_Validation_IEEETests_Test4NodesFeeder_BalancedStepUp_YD",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepUp.YD,fileNamePrefix="IBPSA_latest_IBPSA_Electrical_AC_ThreePhasesUnbalanced_Validation_IEEETests_Test4NodesFeeder_BalancedStepUp_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 0.001078/0.001078, allocations: 101.2 kB / 16.27 MB, free: 5.93 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001113/0.001113, allocations: 190.5 kB / 17.2 MB, free: 5.574 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.311/1.311, allocations: 222.9 MB / 240.9 MB, free: 15.23 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo): time 0.7504/0.7504, allocations: 122.9 MB / 413.9 MB, free: 15.88 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.002116/0.002116, allocations: 55.91 kB / 0.4912 GB, free: 7.297 MB / 414.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3652/0.3673, allocations: 77.94 MB / 0.5673 GB, free: 32.67 MB / 446.1 MB Notification: Performance of NFInst.instantiate(IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepUp.YD): time 0.01955/0.3869, allocations: 18.15 MB / 0.5851 GB, free: 20.57 MB / 446.1 MB Notification: Performance of NFInst.instExpressions: time 0.009668/0.3966, allocations: 6.802 MB / 0.5917 GB, free: 15.23 MB / 446.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.001483/0.3981, allocations: 59.31 kB / 0.5918 GB, free: 15.21 MB / 446.1 MB Notification: Performance of NFTyping.typeComponents: time 0.003137/0.4013, allocations: 1.455 MB / 0.5932 GB, free: 14.08 MB / 446.1 MB Notification: Performance of NFTyping.typeBindings: time 0.002738/0.404, allocations: 1.419 MB / 0.5946 GB, free: 12.96 MB / 446.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.002471/0.4065, allocations: 1.269 MB / 0.5958 GB, free: 11.96 MB / 446.1 MB Notification: Performance of NFFlatten.flatten: time 0.004201/0.4107, allocations: 5.446 MB / 0.6011 GB, free: 8.109 MB / 446.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.005443/0.4162, allocations: 7.203 MB / 0.6082 GB, free: 0.8516 MB / 446.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.002914/0.4191, allocations: 2.345 MB / 0.6104 GB, free: 14.5 MB / 462.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.003807/0.4229, allocations: 2.945 MB / 0.6133 GB, free: 11.54 MB / 462.1 MB Notification: Performance of NFPackage.collectConstants: time 0.000875/0.4238, allocations: 0.5117 MB / 0.6138 GB, free: 11.03 MB / 462.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.002411/0.4263, allocations: 1.268 MB / 0.6151 GB, free: 9.762 MB / 462.1 MB Notification: Performance of NFScalarize.scalarize: time 0.002027/0.4283, allocations: 2.238 MB / 0.6172 GB, free: 7.52 MB / 462.1 MB Notification: Performance of NFVerifyModel.verify: time 0.002192/0.4305, allocations: 2.171 MB / 0.6194 GB, free: 5.34 MB / 462.1 MB Notification: Performance of NFConvertDAE.convert: time 0.006864/0.4374, allocations: 7.694 MB / 0.6269 GB, free: 13.62 MB / 478.1 MB Notification: Performance of FrontEnd - DAE generated: time 7.304e-06/0.4374, allocations: 4 kB / 0.6269 GB, free: 13.62 MB / 478.1 MB Notification: Performance of FrontEnd: time 2.164e-06/0.4374, allocations: 0 / 0.6269 GB, free: 13.62 MB / 478.1 MB Notification: Performance of Transformations before backend: time 0.0001363/0.4376, allocations: 0 / 0.6269 GB, free: 13.62 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: 983 * Number of variables: 983 Notification: Performance of Generate backend data structure: time 0.006819/0.4444, allocations: 3.792 MB / 0.6306 GB, free: 9.77 MB / 478.1 MB Notification: Performance of prepare preOptimizeDAE: time 3.833e-05/0.4444, allocations: 8.031 kB / 0.6306 GB, free: 9.762 MB / 478.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0006571/0.4451, allocations: 0.5345 MB / 0.6311 GB, free: 9.219 MB / 478.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01231/0.4574, allocations: 2.415 MB / 0.6335 GB, free: 6.797 MB / 478.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004276/0.4617, allocations: 2.147 MB / 0.6356 GB, free: 4.605 MB / 478.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001747/0.4619, allocations: 271.2 kB / 0.6358 GB, free: 4.34 MB / 478.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0008331/0.4627, allocations: 347.9 kB / 0.6362 GB, free: 4 MB / 478.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01472/0.4775, allocations: 7.122 MB / 0.6431 GB, free: 12.78 MB / 494.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 7.431e-05/0.4776, allocations: 11.94 kB / 0.6431 GB, free: 12.77 MB / 494.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0004538/0.478, allocations: 152 kB / 0.6433 GB, free: 12.62 MB / 494.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0004426/0.4785, allocations: 326 kB / 0.6436 GB, free: 12.3 MB / 494.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01672/0.4952, allocations: 7.028 MB / 0.6504 GB, free: 5.258 MB / 494.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.03777/0.533, allocations: 26.62 MB / 0.6764 GB, free: 8.457 MB / 0.5137 GB Notification: Performance of preOpt comSubExp (simulation): time 0.008077/0.5411, allocations: 4.988 MB / 0.6813 GB, free: 3.164 MB / 0.5137 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.005906/0.5471, allocations: 2.596 MB / 0.6838 GB, free: 0.5547 MB / 0.5137 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002491/0.5474, allocations: 138.9 kB / 0.684 GB, free: 412 kB / 0.5137 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.303e-05/0.5474, allocations: 60.56 kB / 0.684 GB, free: 340 kB / 0.5137 GB Notification: Performance of pre-optimization done (n=208): time 3.927e-06/0.5474, allocations: 0 / 0.684 GB, free: 340 kB / 0.5137 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 0.1066/0.654, allocations: 30.89 MB / 0.7142 GB, free: 1.348 MB / 0.545 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001141/0.6542, allocations: 239.6 kB / 0.7144 GB, free: 1.066 MB / 0.545 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002185/0.6564, allocations: 1.427 MB / 0.7158 GB, free: 15.63 MB / 0.5606 GB Notification: Performance of collectPreVariables (initialization): time 0.0005243/0.6569, allocations: 65.7 kB / 0.7159 GB, free: 15.56 MB / 0.5606 GB Notification: Performance of collectInitialEqns (initialization): time 0.001038/0.6579, allocations: 1.489 MB / 0.7173 GB, free: 14.05 MB / 0.5606 GB Notification: Performance of collectInitialBindings (initialization): time 0.001189/0.6591, allocations: 0.9243 MB / 0.7182 GB, free: 13.11 MB / 0.5606 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001542/0.6607, allocations: 0.6318 MB / 0.7189 GB, free: 12.47 MB / 0.5606 GB Notification: Performance of setup shared object (initialization): time 9.73e-05/0.6608, allocations: 305.1 kB / 0.7192 GB, free: 12.17 MB / 0.5606 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.005966/0.6668, allocations: 2.69 MB / 0.7218 GB, free: 9.469 MB / 0.5606 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.006465/0.6733, allocations: 3.571 MB / 0.7253 GB, free: 5.516 MB / 0.5606 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0126/0.6859, allocations: 6.406 MB / 0.7315 GB, free: 14.71 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.864e-05/0.6859, allocations: 8 kB / 0.7315 GB, free: 14.7 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 0.02863/0.7146, allocations: 10.99 MB / 0.7423 GB, free: 3.609 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 3.789e-05/0.7146, allocations: 16 kB / 0.7423 GB, free: 3.594 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.152e-05/0.7147, allocations: 24 kB / 0.7423 GB, free: 3.57 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.2671/0.9818, allocations: 5.577 MB / 0.7477 GB, free: 152.9 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004578/0.9864, allocations: 0.9964 MB / 0.7487 GB, free: 152.9 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.03978/1.026, allocations: 28.19 MB / 0.7762 GB, free: 138.9 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004652/1.031, allocations: 0.574 MB / 0.7768 GB, free: 138.8 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0004413/1.031, allocations: 152.5 kB / 0.777 GB, free: 138.8 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.007711/1.039, allocations: 3.983 MB / 0.7808 GB, free: 137.5 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.005361/1.044, allocations: 3.534 MB / 0.7843 GB, free: 135 MB / 0.5762 GB Error: Initialization problem is structural singular. Please, check the initial conditions. Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.07878/1.123, allocations: 24.68 MB / 0.8084 GB, free: 112.3 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.932e-05/1.123, allocations: 8 kB / 0.8084 GB, free: 112.3 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 0.02219/1.146, allocations: 10.53 MB / 0.8187 GB, free: 101.7 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 3.054e-05/1.146, allocations: 16 kB / 0.8187 GB, free: 101.7 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.63e-05/1.146, allocations: 28 kB / 0.8187 GB, free: 101.6 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.01331/1.159, allocations: 4.335 MB / 0.823 GB, free: 97.29 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004244/1.163, allocations: 1.049 MB / 0.824 GB, free: 96.24 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.02813/1.191, allocations: 27.15 MB / 0.8505 GB, free: 68.42 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004401/1.196, allocations: 0.5574 MB / 0.851 GB, free: 67.87 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003271/1.196, allocations: 152 kB / 0.8512 GB, free: 67.72 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 0.0007964/1.197, allocations: 398.3 kB / 0.8516 GB, free: 67.34 MB / 0.5762 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000491/1.197, allocations: 197.7 kB / 0.8518 GB, free: 67.14 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 0.02253/1.22, allocations: 10.17 MB / 0.8617 GB, free: 56.91 MB / 0.5762 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.864e-05/1.22, allocations: 28 kB / 0.8617 GB, free: 56.88 MB / 0.5762 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.991e-05/1.22, allocations: 16 kB / 0.8617 GB, free: 56.87 MB / 0.5762 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.987e-05/1.22, allocations: 19.02 kB / 0.8617 GB, free: 56.85 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 0.02896/1.249, allocations: 16.34 MB / 0.8777 GB, free: 40.34 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.695e-05/1.249, allocations: 7.938 kB / 0.8777 GB, free: 40.33 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.003019/1.252, allocations: 0.7379 MB / 0.8784 GB, free: 39.59 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.01639/1.269, allocations: 5.2 MB / 0.8835 GB, free: 34.37 MB / 0.5762 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0005114/1.269, allocations: 75.89 kB / 0.8836 GB, free: 34.3 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.03136/1.301, allocations: 27.22 MB / 0.9102 GB, free: 6.59 MB / 0.5762 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 7.293e-06/1.301, allocations: 19.88 kB / 0.9102 GB, free: 6.574 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 0.02291/1.323, allocations: 10.12 MB / 0.9201 GB, free: 12.21 MB / 0.5919 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001586/1.325, allocations: 0.7196 MB / 0.9208 GB, free: 11.47 MB / 0.5919 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0004343/1.326, allocations: 60 kB / 0.9208 GB, free: 11.41 MB / 0.5919 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.003452/1.329, allocations: 0.507 MB / 0.9213 GB, free: 10.9 MB / 0.5919 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0008127/1.33, allocations: 222.4 kB / 0.9215 GB, free: 10.69 MB / 0.5919 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0002188/1.33, allocations: 87.95 kB / 0.9216 GB, free: 10.6 MB / 0.5919 GB Notification: Performance of sorting global known variables: time 0.00135/1.331, allocations: 0.98 MB / 0.9226 GB, free: 9.617 MB / 0.5919 GB Notification: Performance of sort global known variables: time 4.6e-07/1.331, allocations: 0 / 0.9226 GB, free: 9.617 MB / 0.5919 GB Notification: Performance of remove unused functions: time 0.005616/1.337, allocations: 1.848 MB / 0.9244 GB, free: 7.77 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 0.02458/1.362, allocations: 10.79 MB / 0.9349 GB, free: 12.73 MB / 0.6075 GB Notification: Performance of simCode: created initialization part: time 0.03264/1.394, allocations: 14.4 MB / 0.949 GB, free: 14.24 MB / 0.6231 GB Notification: Performance of simCode: created event and clocks part: time 1.262e-05/1.394, allocations: 0 / 0.949 GB, free: 14.24 MB / 0.6231 GB Notification: Performance of simCode: created simulation system equations: time 0.0101/1.404, allocations: 4.376 MB / 0.9533 GB, free: 9.824 MB / 0.6231 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001925/1.406, allocations: 276.1 kB / 0.9535 GB, free: 9.566 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. Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.3619/1.768, allocations: 43.82 MB / 0.9963 GB, free: 215 MB / 0.6544 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.003345/1.772, allocations: 2.84 MB / 0.9991 GB, free: 214.2 MB / 0.6544 GB Notification: Performance of simCode: alias equations: time 0.00582/1.777, allocations: 1.651 MB / 1.001 GB, free: 214.2 MB / 0.6544 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001568/1.779, allocations: 1.207 MB / 1.002 GB, free: 214.2 MB / 0.6544 GB Notification: Performance of SimCode: time 1.463e-06/1.779, allocations: 0 / 1.002 GB, free: 214.2 MB / 0.6544 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.1397/1.919, allocations: 101.2 MB / 1.101 GB, free: 138.2 MB / 0.6544 GB Notification: Performance of buildModelFMU: Generate platform static: time 12.53/14.45, allocations: 20.03 kB / 1.101 GB, free: 138.2 MB / 0.6544 GB (rm -f IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepUp.YD.pipe ; mkfifo IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepUp.YD.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepUp.YD.pipe >> ../files/IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepUp.YD.sim & python3 -m fmpy simulate --output-file IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepUp.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_BalancedStepUp_YD.fmu > IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepUp.YD.pipe 2>&1)