Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_11_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 11.1.0-maint.11.x/package.mo", uses=false) Using package Buildings with version 11.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.0-maint.11.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_11_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_11_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 0.007645/0.007645, allocations: 98.67 kB / 15.73 MB, free: 6.062 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.002103/0.002103, allocations: 193 kB / 16.67 MB, free: 5.969 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.416/1.416, allocations: 222.9 MB / 240.4 MB, free: 15.15 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.0-maint.11.x/package.mo): time 2.694/2.694, allocations: 469.8 MB / 0.7425 GB, free: 3.348 MB / 0.6075 GB Notification: Performance of FrontEnd - loaded program: time 0.001995/0.001995, allocations: 63.89 kB / 1.065 GB, free: 13.98 MB / 0.8419 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.6606/0.6626, allocations: 159.1 MB / 1.22 GB, free: 2.18 MB / 0.9356 GB Notification: Performance of NFInst.instantiate(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD): time 0.02432/0.6869, allocations: 18.27 MB / 1.238 GB, free: 15.84 MB / 0.9669 GB Notification: Performance of NFInst.instExpressions: time 0.01156/0.6985, allocations: 6.823 MB / 1.245 GB, free: 9.004 MB / 0.9669 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001218/0.6998, allocations: 55.88 kB / 1.245 GB, free: 8.949 MB / 0.9669 GB Notification: Performance of NFTyping.typeComponents: time 0.003906/0.7037, allocations: 1.468 MB / 1.246 GB, free: 7.477 MB / 0.9669 GB Notification: Performance of NFTyping.typeBindings: time 0.003293/0.707, allocations: 1.432 MB / 1.248 GB, free: 6.039 MB / 0.9669 GB Notification: Performance of NFTyping.typeClassSections: time 0.003011/0.7101, allocations: 1.27 MB / 1.249 GB, free: 4.77 MB / 0.9669 GB Notification: Performance of NFFlatten.flatten: time 0.006341/0.7164, allocations: 5.464 MB / 1.254 GB, free: 15.29 MB / 0.9825 GB Notification: Performance of NFFlatten.resolveConnections: time 0.009319/0.7257, allocations: 7.119 MB / 1.261 GB, free: 8.062 MB / 0.9825 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003613/0.7294, allocations: 2.376 MB / 1.264 GB, free: 5.68 MB / 0.9825 GB Notification: Performance of NFSimplifyModel.simplify: time 0.004757/0.7341, allocations: 2.964 MB / 1.266 GB, free: 2.707 MB / 0.9825 GB Notification: Performance of NFPackage.collectConstants: time 0.001279/0.7354, allocations: 0.5156 MB / 1.267 GB, free: 2.191 MB / 0.9825 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002816/0.7383, allocations: 1.264 MB / 1.268 GB, free: 0.9258 MB / 0.9825 GB Notification: Performance of NFScalarize.scalarize: time 0.002486/0.7408, allocations: 2.254 MB / 1.27 GB, free: 14.67 MB / 0.9981 GB Notification: Performance of NFVerifyModel.verify: time 0.002494/0.7433, allocations: 2.19 MB / 1.272 GB, free: 12.47 MB / 0.9981 GB Notification: Performance of NFConvertDAE.convert: time 0.008412/0.7517, allocations: 7.805 MB / 1.28 GB, free: 4.641 MB / 0.9981 GB Notification: Performance of FrontEnd - DAE generated: time 3.997e-06/0.7517, allocations: 0 / 1.28 GB, free: 4.641 MB / 0.9981 GB Notification: Performance of FrontEnd: time 1.703e-06/0.7517, allocations: 0 / 1.28 GB, free: 4.641 MB / 0.9981 GB Notification: Performance of Transformations before backend: time 0.000128/0.7519, allocations: 0 / 1.28 GB, free: 4.641 MB / 0.9981 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 0.008196/0.7601, allocations: 3.911 MB / 1.284 GB, free: 0.6641 MB / 0.9981 GB Notification: Performance of prepare preOptimizeDAE: time 4.665e-05/0.7601, allocations: 12.03 kB / 1.284 GB, free: 0.6523 MB / 0.9981 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0008087/0.7609, allocations: 0.5426 MB / 1.284 GB, free: 104 kB / 0.9981 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01388/0.7748, allocations: 2.433 MB / 1.287 GB, free: 13.66 MB / 1.014 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004694/0.7795, allocations: 2.191 MB / 1.289 GB, free: 11.43 MB / 1.014 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002456/0.7798, allocations: 271.2 kB / 1.289 GB, free: 11.16 MB / 1.014 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0009265/0.7807, allocations: 355.9 kB / 1.29 GB, free: 10.81 MB / 1.014 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0168/0.7976, allocations: 7.155 MB / 1.297 GB, free: 3.555 MB / 1.014 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0001268/0.7977, allocations: 7.938 kB / 1.297 GB, free: 3.547 MB / 1.014 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.001049/0.7988, allocations: 152 kB / 1.297 GB, free: 3.398 MB / 1.014 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0005694/0.7994, allocations: 330.1 kB / 1.297 GB, free: 3.074 MB / 1.014 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01813/0.8175, allocations: 7.044 MB / 1.304 GB, free: 12.02 MB / 1.029 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 0.03735/0.8549, allocations: 26.59 MB / 1.33 GB, free: 15.26 MB / 1.061 GB Notification: Performance of preOpt comSubExp (simulation): time 0.009464/0.8644, allocations: 4.992 MB / 1.335 GB, free: 9.957 MB / 1.061 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.006683/0.8711, allocations: 2.612 MB / 1.337 GB, free: 7.324 MB / 1.061 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0003006/0.8714, allocations: 127 kB / 1.337 GB, free: 7.18 MB / 1.061 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.706e-05/0.8715, allocations: 64.5 kB / 1.337 GB, free: 7.109 MB / 1.061 GB Notification: Performance of pre-optimization done (n=208): time 4.088e-06/0.8715, allocations: 0 / 1.337 GB, free: 7.109 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=271): time 0.1132/0.9847, allocations: 31.19 MB / 1.368 GB, free: 7.852 MB / 1.092 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001507/0.9849, allocations: 243.5 kB / 1.368 GB, free: 7.562 MB / 1.092 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002426/0.9874, allocations: 1.477 MB / 1.37 GB, free: 6.078 MB / 1.092 GB Notification: Performance of collectPreVariables (initialization): time 0.0004013/0.9878, allocations: 65.7 kB / 1.37 GB, free: 6.008 MB / 1.092 GB Notification: Performance of collectInitialEqns (initialization): time 0.001187/0.989, allocations: 1.55 MB / 1.371 GB, free: 4.441 MB / 1.092 GB Notification: Performance of collectInitialBindings (initialization): time 0.001177/0.9901, allocations: 0.9644 MB / 1.372 GB, free: 3.469 MB / 1.092 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001472/0.9916, allocations: 0.6359 MB / 1.373 GB, free: 2.824 MB / 1.092 GB Notification: Performance of setup shared object (initialization): time 0.0001304/0.9918, allocations: 313 kB / 1.373 GB, free: 2.516 MB / 1.092 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.006644/0.9984, allocations: 2.686 MB / 1.376 GB, free: 15.82 MB / 1.107 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.007444/1.006, allocations: 3.567 MB / 1.379 GB, free: 11.88 MB / 1.107 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.01409/1.02, allocations: 6.402 MB / 1.385 GB, free: 5.074 MB / 1.107 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.491e-05/1.02, allocations: 8 kB / 1.385 GB, free: 5.066 MB / 1.107 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 0.03077/1.051, allocations: 11.03 MB / 1.396 GB, free: 9.934 MB / 1.123 GB Notification: Performance of prepare postOptimizeDAE: time 4.13e-05/1.051, allocations: 20 kB / 1.396 GB, free: 9.914 MB / 1.123 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.691e-05/1.051, allocations: 28 kB / 1.396 GB, free: 9.887 MB / 1.123 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.02125/1.072, allocations: 5.536 MB / 1.402 GB, free: 4.332 MB / 1.123 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004722/1.077, allocations: 0.9906 MB / 1.403 GB, free: 3.34 MB / 1.123 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0471/1.124, allocations: 28.22 MB / 1.43 GB, free: 6.676 MB / 1.154 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004602/1.129, allocations: 0.5736 MB / 1.431 GB, free: 6.102 MB / 1.154 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0005145/1.129, allocations: 155.9 kB / 1.431 GB, free: 5.949 MB / 1.154 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.008741/1.138, allocations: 3.98 MB / 1.435 GB, free: 1.961 MB / 1.154 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.007331/1.145, allocations: 3.536 MB / 1.438 GB, free: 14.05 MB / 1.17 GB Error: Initialization problem is structural singular. Please, check the initial conditions. Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.09512/1.24, allocations: 24.63 MB / 1.462 GB, free: 4.906 MB / 1.186 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.439e-05/1.24, allocations: 8 kB / 1.462 GB, free: 4.898 MB / 1.186 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 0.02817/1.269, allocations: 10.54 MB / 1.473 GB, free: 10.21 MB / 1.201 GB Notification: Performance of prepare postOptimizeDAE: time 3.647e-05/1.269, allocations: 19.94 kB / 1.473 GB, free: 10.19 MB / 1.201 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.223e-05/1.269, allocations: 28 kB / 1.473 GB, free: 10.16 MB / 1.201 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.01636/1.285, allocations: 4.329 MB / 1.477 GB, free: 5.816 MB / 1.201 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004863/1.29, allocations: 1.037 MB / 1.478 GB, free: 4.777 MB / 1.201 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.03886/1.329, allocations: 27.14 MB / 1.504 GB, free: 8.91 MB / 1.232 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004637/1.334, allocations: 0.5538 MB / 1.505 GB, free: 8.355 MB / 1.232 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0005447/1.334, allocations: 152 kB / 1.505 GB, free: 8.207 MB / 1.232 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 0.001022/1.335, allocations: 412.6 kB / 1.505 GB, free: 7.801 MB / 1.232 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0006382/1.336, allocations: 214.6 kB / 1.506 GB, free: 7.59 MB / 1.232 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 0.02866/1.364, allocations: 10.17 MB / 1.516 GB, free: 13.34 MB / 1.248 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.722e-05/1.365, allocations: 31.94 kB / 1.516 GB, free: 13.3 MB / 1.248 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.101e-05/1.365, allocations: 12 kB / 1.516 GB, free: 13.29 MB / 1.248 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.631e-05/1.365, allocations: 11.95 kB / 1.516 GB, free: 13.28 MB / 1.248 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 0.03694/1.402, allocations: 16.28 MB / 1.532 GB, free: 12.75 MB / 1.264 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.049e-05/1.402, allocations: 15.98 kB / 1.532 GB, free: 12.74 MB / 1.264 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.003635/1.405, allocations: 0.7295 MB / 1.532 GB, free: 12.01 MB / 1.264 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.01974/1.425, allocations: 5.173 MB / 1.537 GB, free: 6.82 MB / 1.264 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.000383/1.425, allocations: 75.94 kB / 1.537 GB, free: 6.746 MB / 1.264 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.5366/1.962, allocations: 27.26 MB / 1.564 GB, free: 313.3 MB / 1.279 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 9.007e-06/1.962, allocations: 12.75 kB / 1.564 GB, free: 313.3 MB / 1.279 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 0.02554/1.988, allocations: 10.1 MB / 1.574 GB, free: 312 MB / 1.279 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001312/1.989, allocations: 0.733 MB / 1.575 GB, free: 311.7 MB / 1.279 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0003793/1.989, allocations: 64.75 kB / 1.575 GB, free: 311.7 MB / 1.279 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.003472/1.993, allocations: 0.5058 MB / 1.575 GB, free: 311.6 MB / 1.279 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0007067/1.993, allocations: 222.2 kB / 1.575 GB, free: 311.6 MB / 1.279 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0002245/1.994, allocations: 95.56 kB / 1.575 GB, free: 311.6 MB / 1.279 GB Notification: Performance of sorting global known variables: time 0.001267/1.995, allocations: 1.004 MB / 1.576 GB, free: 311.2 MB / 1.279 GB Notification: Performance of sort global known variables: time 1.81e-07/1.995, allocations: 1.781 kB / 1.576 GB, free: 311.2 MB / 1.279 GB Notification: Performance of remove unused functions: time 0.00455/2, allocations: 1.857 MB / 1.578 GB, free: 311 MB / 1.279 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 0.02288/2.022, allocations: 10.76 MB / 1.589 GB, free: 307.2 MB / 1.279 GB Notification: Performance of simCode: created initialization part: time 0.02434/2.047, allocations: 12.47 MB / 1.601 GB, free: 302.4 MB / 1.279 GB Notification: Performance of simCode: created event and clocks part: time 6.172e-06/2.047, allocations: 0 / 1.601 GB, free: 302.4 MB / 1.279 GB Notification: Performance of simCode: created simulation system equations: time 0.008939/2.056, allocations: 4.438 MB / 1.605 GB, free: 298.9 MB / 1.279 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001803/2.058, allocations: 295.8 kB / 1.606 GB, free: 298.6 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 0.08077/2.138, allocations: 42.5 MB / 1.647 GB, free: 255 MB / 1.279 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.002651/2.141, allocations: 2.846 MB / 1.65 GB, free: 252.2 MB / 1.279 GB Notification: Performance of simCode: alias equations: time 0.003766/2.145, allocations: 1.659 MB / 1.651 GB, free: 250.5 MB / 1.279 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001376/2.146, allocations: 1.226 MB / 1.653 GB, free: 249.3 MB / 1.279 GB Notification: Performance of SimCode: time 7.71e-07/2.146, allocations: 0 / 1.653 GB, free: 249.3 MB / 1.279 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.1283/2.275, allocations: 103.4 MB / 1.754 GB, free: 146.3 MB / 1.279 GB Notification: Performance of buildModelFMU: Generate platform static: time 16.01/18.28, allocations: 10.14 kB / 1.754 GB, free: 146.3 MB / 1.279 GB (rm -f Buildings_11_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD.pipe ; mkfifo Buildings_11_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD.pipe ; head -c 1048576 < Buildings_11_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD.pipe >> ../files/Buildings_11_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD.sim & python3 -m fmpy simulate --output-file Buildings_11_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD_res.csv --start-time 0 --stop-time 1 --timeout 400 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.0004 Buildings_11_Buildings_Electrical_AC_ThreePhasesUnbalanced_Validation_IEEETests_Test4NodesFeeder_UnbalancedStepDown_YD.fmu > Buildings_11_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD.pipe 2>&1)