Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_10_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.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/Buildings 10.1.1-maint.10.0.x/package.mo", uses=false) Using package Buildings with version 10.1.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 10.1.1-maint.10.0.x/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(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD,fileNamePrefix="Buildings_10_Buildings_Electrical_AC_ThreePhasesUnbalanced_Validation_IEEETests_Test4NodesFeeder_UnbalancedStepDown_YD",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD,fileNamePrefix="Buildings_10_Buildings_Electrical_AC_ThreePhasesUnbalanced_Validation_IEEETests_Test4NodesFeeder_UnbalancedStepDown_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 0.004691/0.004691, allocations: 106.1 kB / 15.74 MB, free: 6.02 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001166/0.001166, allocations: 189.2 kB / 16.68 MB, free: 5.938 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.282/1.282, allocations: 222.9 MB / 240.4 MB, free: 15.07 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 10.1.1-maint.10.0.x/package.mo): time 2.444/2.444, allocations: 437 MB / 0.7105 GB, free: 4.363 MB / 0.5762 GB Notification: Performance of FrontEnd - loaded program: time 0.001233/0.001233, allocations: 59.89 kB / 1.018 GB, free: 9.789 MB / 0.795 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.7522/0.7534, allocations: 151.6 MB / 1.166 GB, free: 3.789 MB / 0.8887 GB Notification: Performance of NFInst.instantiate(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD): time 0.0209/0.7744, allocations: 18.26 MB / 1.184 GB, free: 1.457 MB / 0.9044 GB Notification: Performance of NFInst.instExpressions: time 0.01148/0.7859, allocations: 6.816 MB / 1.191 GB, free: 10.62 MB / 0.92 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001931/0.7878, allocations: 55.88 kB / 1.191 GB, free: 10.56 MB / 0.92 GB Notification: Performance of NFTyping.typeComponents: time 0.004123/0.792, allocations: 1.473 MB / 1.192 GB, free: 9.086 MB / 0.92 GB Notification: Performance of NFTyping.typeBindings: time 0.003715/0.7958, allocations: 1.455 MB / 1.194 GB, free: 7.625 MB / 0.92 GB Notification: Performance of NFTyping.typeClassSections: time 0.003175/0.799, allocations: 1.28 MB / 1.195 GB, free: 6.344 MB / 0.92 GB Notification: Performance of NFFlatten.flatten: time 0.006094/0.8051, allocations: 5.468 MB / 1.2 GB, free: 0.8633 MB / 0.92 GB Notification: Performance of NFFlatten.resolveConnections: time 0.00804/0.8132, allocations: 7.11 MB / 1.207 GB, free: 9.645 MB / 0.9356 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003396/0.8166, allocations: 2.38 MB / 1.21 GB, free: 7.258 MB / 0.9356 GB Notification: Performance of NFSimplifyModel.simplify: time 0.004638/0.8213, allocations: 2.968 MB / 1.212 GB, free: 4.281 MB / 0.9356 GB Notification: Performance of NFPackage.collectConstants: time 0.0009882/0.8223, allocations: 0.5156 MB / 1.213 GB, free: 3.766 MB / 0.9356 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002414/0.8247, allocations: 1.264 MB / 1.214 GB, free: 2.5 MB / 0.9356 GB Notification: Performance of NFScalarize.scalarize: time 0.00218/0.8269, allocations: 2.257 MB / 1.216 GB, free: 244 kB / 0.9356 GB Notification: Performance of NFVerifyModel.verify: time 0.002923/0.8298, allocations: 2.191 MB / 1.219 GB, free: 14.04 MB / 0.9512 GB Notification: Performance of NFConvertDAE.convert: time 0.007998/0.8378, allocations: 7.798 MB / 1.226 GB, free: 6.219 MB / 0.9512 GB Notification: Performance of FrontEnd - DAE generated: time 5.811e-06/0.8379, allocations: 0 / 1.226 GB, free: 6.219 MB / 0.9512 GB Notification: Performance of FrontEnd: time 2.084e-06/0.8379, allocations: 0 / 1.226 GB, free: 6.219 MB / 0.9512 GB Notification: Performance of Transformations before backend: time 0.0001555/0.8381, allocations: 0 / 1.226 GB, free: 6.219 MB / 0.9512 GB 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 0.008809/0.8469, allocations: 3.911 MB / 1.23 GB, free: 2.242 MB / 0.9512 GB Notification: Performance of prepare preOptimizeDAE: time 4.479e-05/0.8469, allocations: 8.625 kB / 1.23 GB, free: 2.234 MB / 0.9512 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0009237/0.8479, allocations: 0.5426 MB / 1.23 GB, free: 1.684 MB / 0.9512 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01299/0.8609, allocations: 2.436 MB / 1.233 GB, free: 15.24 MB / 0.9669 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004705/0.8656, allocations: 2.195 MB / 1.235 GB, free: 13 MB / 0.9669 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.000222/0.8659, allocations: 283.2 kB / 1.235 GB, free: 12.72 MB / 0.9669 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.001114/0.867, allocations: 344 kB / 1.236 GB, free: 12.39 MB / 0.9669 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0143/0.8813, allocations: 7.151 MB / 1.243 GB, free: 5.133 MB / 0.9669 GB Notification: Performance of preOpt findStateOrder (simulation): time 7.655e-05/0.8814, allocations: 11.89 kB / 1.243 GB, free: 5.121 MB / 0.9669 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0004754/0.8819, allocations: 152 kB / 1.243 GB, free: 4.973 MB / 0.9669 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0004415/0.8823, allocations: 338 kB / 1.243 GB, free: 4.641 MB / 0.9669 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01591/0.8983, allocations: 7.048 MB / 1.25 GB, free: 13.58 MB / 0.9825 GB Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts. Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.03597/0.9343, allocations: 26.6 MB / 1.276 GB, free: 0.8008 MB / 0.9981 GB Notification: Performance of preOpt comSubExp (simulation): time 0.008262/0.9426, allocations: 4.99 MB / 1.281 GB, free: 11.52 MB / 1.014 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.005868/0.9485, allocations: 2.604 MB / 1.283 GB, free: 8.883 MB / 1.014 GB Notification: Performance of preOpt evalFunc (simulation): time 0.000265/0.9487, allocations: 139 kB / 1.283 GB, free: 8.727 MB / 1.014 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.011e-05/0.9488, allocations: 60.56 kB / 1.284 GB, free: 8.66 MB / 1.014 GB Notification: Performance of pre-optimization done (n=208): time 3.958e-06/0.9488, allocations: 0 / 1.284 GB, free: 8.66 MB / 1.014 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.conv1.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.conv1.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 0.1016/1.05, allocations: 31.19 MB / 1.314 GB, free: 9.41 MB / 1.045 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001265/1.051, allocations: 243.6 kB / 1.314 GB, free: 9.121 MB / 1.045 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002118/1.053, allocations: 1.473 MB / 1.316 GB, free: 7.641 MB / 1.045 GB Notification: Performance of collectPreVariables (initialization): time 0.0003571/1.053, allocations: 65.7 kB / 1.316 GB, free: 7.57 MB / 1.045 GB Notification: Performance of collectInitialEqns (initialization): time 0.0009376/1.054, allocations: 1.55 MB / 1.317 GB, free: 6.004 MB / 1.045 GB Notification: Performance of collectInitialBindings (initialization): time 0.0009724/1.055, allocations: 0.9644 MB / 1.318 GB, free: 5.031 MB / 1.045 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001272/1.056, allocations: 0.636 MB / 1.319 GB, free: 4.387 MB / 1.045 GB Notification: Performance of setup shared object (initialization): time 0.0001023/1.056, allocations: 309 kB / 1.319 GB, free: 4.082 MB / 1.045 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.005843/1.062, allocations: 2.686 MB / 1.322 GB, free: 1.387 MB / 1.045 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.006449/1.069, allocations: 3.571 MB / 1.325 GB, free: 13.44 MB / 1.061 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.01239/1.081, allocations: 6.399 MB / 1.331 GB, free: 6.641 MB / 1.061 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.303e-05/1.081, allocations: 8 kB / 1.331 GB, free: 6.633 MB / 1.061 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.conv1.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.conv1.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 0.02803/1.109, allocations: 11.04 MB / 1.342 GB, free: 11.49 MB / 1.076 GB Notification: Performance of prepare postOptimizeDAE: time 4.231e-05/1.109, allocations: 16 kB / 1.342 GB, free: 11.47 MB / 1.076 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.456e-05/1.109, allocations: 28 kB / 1.342 GB, free: 11.45 MB / 1.076 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.01936/1.129, allocations: 5.54 MB / 1.348 GB, free: 5.891 MB / 1.076 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00437/1.133, allocations: 0.9906 MB / 1.349 GB, free: 4.898 MB / 1.076 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.04281/1.176, allocations: 28.21 MB / 1.376 GB, free: 8.23 MB / 1.107 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00442/1.18, allocations: 0.5732 MB / 1.377 GB, free: 7.656 MB / 1.107 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000554/1.181, allocations: 155.9 kB / 1.377 GB, free: 7.504 MB / 1.107 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.008018/1.189, allocations: 3.984 MB / 1.381 GB, free: 3.512 MB / 1.107 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.00664/1.196, allocations: 3.54 MB / 1.384 GB, free: 15.59 MB / 1.123 GB Error: Initialization problem is structural singular. Please, check the initial conditions. Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.08562/1.281, allocations: 24.61 MB / 1.408 GB, free: 6.465 MB / 1.139 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.275e-05/1.281, allocations: 15.94 kB / 1.408 GB, free: 6.449 MB / 1.139 GB Warning: The linear system: 1 : transformer.conv3.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.conv3.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 : transformer.conv1.V2[1] = line2.v1_n[1] - line2.v2_n[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 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[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_n[1] ; line2.v2_p[1] ; line2.v1_p[1] ; line2.v1_n[1] ] = [ -transformer.conv1.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] ; 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_n[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 0.02646/1.308, allocations: 10.54 MB / 1.419 GB, free: 11.77 MB / 1.154 GB Notification: Performance of prepare postOptimizeDAE: time 3.839e-05/1.308, allocations: 19.94 kB / 1.419 GB, free: 11.75 MB / 1.154 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.622e-05/1.308, allocations: 28 kB / 1.419 GB, free: 11.73 MB / 1.154 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.01496/1.323, allocations: 4.325 MB / 1.423 GB, free: 7.383 MB / 1.154 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004611/1.328, allocations: 1.034 MB / 1.424 GB, free: 6.348 MB / 1.154 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.03801/1.366, allocations: 27.14 MB / 1.45 GB, free: 10.47 MB / 1.186 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00444/1.37, allocations: 0.55 MB / 1.451 GB, free: 9.918 MB / 1.186 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0006392/1.371, allocations: 148 kB / 1.451 GB, free: 9.773 MB / 1.186 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.i2[2]) - line2.i3[2] - line2.i1[2] 0.0 = (-line2.i2[1]) - line2.i3[1] - line2.i1[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 0.001135/1.372, allocations: 410.9 kB / 1.451 GB, free: 9.367 MB / 1.186 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0007069/1.373, allocations: 210.7 kB / 1.452 GB, free: 9.16 MB / 1.186 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.conv1.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.conv1.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 postOpt wrapFunctionCalls (simulation): time 0.02712/1.4, allocations: 10.18 MB / 1.462 GB, free: 14.91 MB / 1.201 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.378e-05/1.4, allocations: 28 kB / 1.462 GB, free: 14.88 MB / 1.201 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.673e-05/1.4, allocations: 12 kB / 1.462 GB, free: 14.87 MB / 1.201 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.19e-05/1.4, allocations: 11.95 kB / 1.462 GB, free: 14.86 MB / 1.201 GB Warning: The linear system: 1 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[1] 2 : 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] 3 : transformer.conv1.V2[1] = line2.v1_n[1] - line2.v2_n[1] 4 : 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] [ -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.v1_n[1] ; line2.v2_n[1] ; line2.v2_p[1] ] = [ -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.conv1.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] ] 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 0.03744/1.437, allocations: 16.28 MB / 1.478 GB, free: 14.32 MB / 1.217 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.461e-05/1.437, allocations: 4 kB / 1.478 GB, free: 14.32 MB / 1.217 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.003427/1.441, allocations: 0.734 MB / 1.478 GB, free: 13.59 MB / 1.217 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.01839/1.459, allocations: 5.169 MB / 1.483 GB, free: 8.402 MB / 1.217 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0006262/1.46, allocations: 79.94 kB / 1.483 GB, free: 8.324 MB / 1.217 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.04231/1.502, allocations: 27.27 MB / 1.51 GB, free: 12.55 MB / 1.248 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.082e-05/1.502, allocations: 12.03 kB / 1.51 GB, free: 12.54 MB / 1.248 GB Warning: The linear system: 1 : transformer.conv1.V2[1] = line2.v1_n[1] - line2.v2_n[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 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[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_n[1] ; line2.v2_p[1] ; line2.v1_p[1] ; line2.v1_n[1] ] = [ -transformer.conv1.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] ; 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_n[1] since U(4,4) = 0.0. It might be hard to solve. Compilation continues anyway. Notification: Performance of postOpt symbolicJacobian (simulation): time 0.02568/1.528, allocations: 10.11 MB / 1.52 GB, free: 2.184 MB / 1.248 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001904/1.53, allocations: 0.7259 MB / 1.521 GB, free: 1.438 MB / 1.248 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0007388/1.531, allocations: 56 kB / 1.521 GB, free: 1.383 MB / 1.248 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.004154/1.535, allocations: 0.5109 MB / 1.521 GB, free: 0.8711 MB / 1.248 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.001179/1.536, allocations: 230.3 kB / 1.521 GB, free: 0.6406 MB / 1.248 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0004344/1.537, allocations: 87.95 kB / 1.521 GB, free: 0.5547 MB / 1.248 GB Notification: Performance of sorting global known variables: time 0.00189/1.538, allocations: 1.001 MB / 1.522 GB, free: 15.55 MB / 1.264 GB Notification: Performance of sort global known variables: time 4.51e-07/1.539, allocations: 0 / 1.522 GB, free: 15.55 MB / 1.264 GB Notification: Performance of remove unused functions: time 0.007596/1.546, allocations: 1.855 MB / 1.524 GB, free: 13.7 MB / 1.264 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 : transformer.conv1.V2[1] = line2.v1_n[1] - line2.v2_n[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 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[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_n[1] ; line2.v2_p[1] ; line2.v1_p[1] ; line2.v1_n[1] ] = [ -transformer.conv1.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] ; 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_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 0.02717/1.573, allocations: 10.76 MB / 1.535 GB, free: 2.668 MB / 1.264 GB Notification: Performance of simCode: created initialization part: time 0.03139/1.605, allocations: 12.47 MB / 1.547 GB, free: 6.082 MB / 1.279 GB Notification: Performance of simCode: created event and clocks part: time 1.199e-05/1.605, allocations: 8.062 kB / 1.547 GB, free: 6.074 MB / 1.279 GB Notification: Performance of simCode: created simulation system equations: time 0.01109/1.616, allocations: 4.441 MB / 1.551 GB, free: 1.59 MB / 1.279 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002666/1.619, allocations: 290.9 kB / 1.552 GB, free: 1.316 MB / 1.279 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.conv1.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.conv1.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.conv1.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.conv1.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 0.6058/2.224, allocations: 42.49 MB / 1.593 GB, free: 348.4 MB / 1.279 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.002983/2.227, allocations: 2.848 MB / 1.596 GB, free: 345.6 MB / 1.279 GB Notification: Performance of simCode: alias equations: time 0.004178/2.232, allocations: 1.659 MB / 1.597 GB, free: 344 MB / 1.279 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001734/2.233, allocations: 1.222 MB / 1.599 GB, free: 342.8 MB / 1.279 GB Notification: Performance of SimCode: time 1.011e-06/2.233, allocations: 0 / 1.599 GB, free: 342.8 MB / 1.279 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.1252/2.359, allocations: 103.4 MB / 1.7 GB, free: 239.9 MB / 1.279 GB Notification: Performance of buildModelFMU: Generate platform static: time 15.91/18.27, allocations: 12.7 kB / 1.7 GB, free: 239.9 MB / 1.279 GB (rm -f Buildings_10_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD.pipe ; mkfifo Buildings_10_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD.pipe ; head -c 1048576 < Buildings_10_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD.pipe >> ../files/Buildings_10_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD.sim & python3 -m fmpy simulate --output-file Buildings_10_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD_res.csv --start-time 0 --stop-time 1 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.0004 Buildings_10_Buildings_Electrical_AC_ThreePhasesUnbalanced_Validation_IEEETests_Test4NodesFeeder_UnbalancedStepDown_YD.fmu > Buildings_10_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD.pipe 2>&1)