Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY.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 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo", uses=false) Using package Buildings with version 7.0.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo) Using package Modelica with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+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: translateModel(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY") translateModel(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0009567/0.0009567, allocations: 91.69 kB / 15.36 MB, free: 0.7383 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.007573/0.007573, allocations: 170.4 kB / 16.26 MB, free: 6.676 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.481/1.481, allocations: 205.4 MB / 222.4 MB, free: 5.57 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo): time 1.566/1.566, allocations: 252 MB / 0.5105 GB, free: 4.602 MB / 414.1 MB Notification: Modelica requested package Complex of version 3.2.3. Complex 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Modelica requested package ModelicaServices of version 3.2.3. ModelicaServices 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.0006564/0.0006564, allocations: 16 kB / 0.6249 GB, free: 0.6992 MB / 0.5137 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.5574/0.5581, allocations: 106.3 MB / 0.7288 GB, free: 11.28 MB / 0.545 GB Notification: Performance of NFInst.instantiate(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY): time 0.02048/0.5786, allocations: 17.52 MB / 0.7459 GB, free: 9.699 MB / 0.5606 GB Notification: Performance of NFInst.instExpressions: time 0.01179/0.5905, allocations: 6.873 MB / 0.7526 GB, free: 2.805 MB / 0.5606 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001893/0.5924, allocations: 47.81 kB / 0.7526 GB, free: 2.758 MB / 0.5606 GB Notification: Performance of NFTyping.typeComponents: time 0.001137/0.5936, allocations: 393.2 kB / 0.753 GB, free: 2.371 MB / 0.5606 GB Notification: Performance of NFTyping.typeBindings: time 0.003154/0.5967, allocations: 1.37 MB / 0.7543 GB, free: 0.9961 MB / 0.5606 GB Notification: Performance of NFTyping.typeClassSections: time 0.002544/0.5993, allocations: 1.01 MB / 0.7553 GB, free: 15.98 MB / 0.5762 GB Notification: Performance of NFFlatten.flatten: time 0.008466/0.6078, allocations: 8.787 MB / 0.7639 GB, free: 7.18 MB / 0.5762 GB Notification: Performance of NFFlatten.resolveConnections: time 0.01268/0.6205, allocations: 8.89 MB / 0.7726 GB, free: 14.19 MB / 0.5919 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002971/0.6235, allocations: 1.705 MB / 0.7743 GB, free: 12.48 MB / 0.5919 GB Notification: Performance of NFSimplifyModel.simplify: time 0.004233/0.6277, allocations: 2.745 MB / 0.7769 GB, free: 9.727 MB / 0.5919 GB Notification: Performance of NFPackage.collectConstants: time 0.0005126/0.6283, allocations: 248 kB / 0.7772 GB, free: 9.484 MB / 0.5919 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002445/0.6307, allocations: 1.186 MB / 0.7783 GB, free: 8.297 MB / 0.5919 GB Notification: Performance of NFScalarize.scalarize: time 0.002515/0.6332, allocations: 1.945 MB / 0.7802 GB, free: 6.348 MB / 0.5919 GB Notification: Performance of NFVerifyModel.verify: time 0.002075/0.6353, allocations: 1.864 MB / 0.782 GB, free: 4.469 MB / 0.5919 GB Notification: Performance of NFConvertDAE.convert: time 0.008813/0.6442, allocations: 7.741 MB / 0.7896 GB, free: 12.7 MB / 0.6075 GB Notification: Performance of FrontEnd - DAE generated: time 8.546e-06/0.6442, allocations: 0 / 0.7896 GB, free: 12.7 MB / 0.6075 GB Notification: Performance of FrontEnd: time 4.058e-06/0.6443, allocations: 0 / 0.7896 GB, free: 12.7 MB / 0.6075 GB Notification: Performance of Transformations before backend: time 0.000335/0.6446, allocations: 0 / 0.7896 GB, free: 12.7 MB / 0.6075 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 1034 * Number of variables: 1034 Notification: Performance of Generate backend data structure: time 0.009217/0.6538, allocations: 3.196 MB / 0.7927 GB, free: 9.445 MB / 0.6075 GB Notification: Performance of prepare preOptimizeDAE: time 5.307e-05/0.6539, allocations: 15.97 kB / 0.7927 GB, free: 9.43 MB / 0.6075 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01329/0.6672, allocations: 2.36 MB / 0.795 GB, free: 7.062 MB / 0.6075 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.005753/0.673, allocations: 2.225 MB / 0.7972 GB, free: 4.793 MB / 0.6075 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002527/0.6733, allocations: 275.8 kB / 0.7975 GB, free: 4.523 MB / 0.6075 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.00123/0.6745, allocations: 367.9 kB / 0.7978 GB, free: 4.164 MB / 0.6075 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01749/0.692, allocations: 7.359 MB / 0.805 GB, free: 12.68 MB / 0.6231 GB Notification: Performance of preOpt findStateOrder (simulation): time 8.433e-05/0.6921, allocations: 11.92 kB / 0.805 GB, free: 12.67 MB / 0.6231 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0004817/0.6926, allocations: 152 kB / 0.8052 GB, free: 12.52 MB / 0.6231 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.000474/0.6931, allocations: 338.4 kB / 0.8055 GB, free: 12.19 MB / 0.6231 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01661/0.7097, allocations: 7.142 MB / 0.8125 GB, free: 5.035 MB / 0.6231 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 0.03874/0.7485, allocations: 28.58 MB / 0.8404 GB, free: 5.984 MB / 0.6544 GB Notification: Performance of preOpt comSubExp (simulation): time 0.007848/0.7564, allocations: 4.172 MB / 0.8445 GB, free: 1.594 MB / 0.6544 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.005569/0.762, allocations: 2.331 MB / 0.8467 GB, free: 15.25 MB / 0.67 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002748/0.7623, allocations: 135 kB / 0.8469 GB, free: 15.1 MB / 0.67 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.014e-05/0.7624, allocations: 52.56 kB / 0.8469 GB, free: 15.04 MB / 0.67 GB Notification: Performance of pre-optimization done (n=198): time 4.708e-06/0.7624, allocations: 8 kB / 0.8469 GB, free: 15.03 MB / 0.67 GB Notification: Performance of matching and sorting (n=257): time 0.1059/0.8683, allocations: 30.22 MB / 0.8764 GB, free: 0.7461 MB / 0.6856 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001768/0.8686, allocations: 239.5 kB / 0.8767 GB, free: 476 kB / 0.6856 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002273/0.8708, allocations: 1.462 MB / 0.8781 GB, free: 15 MB / 0.7012 GB Notification: Performance of collectPreVariables (initialization): time 0.0005874/0.8714, allocations: 65.7 kB / 0.8781 GB, free: 14.93 MB / 0.7012 GB Notification: Performance of collectInitialEqns (initialization): time 0.001119/0.8726, allocations: 1.563 MB / 0.8797 GB, free: 13.34 MB / 0.7012 GB Notification: Performance of collectInitialBindings (initialization): time 0.001021/0.8736, allocations: 0.8742 MB / 0.8805 GB, free: 12.45 MB / 0.7012 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004173/0.874, allocations: 248.2 kB / 0.8808 GB, free: 12.2 MB / 0.7012 GB Notification: Performance of setup shared object (initialization): time 0.0001027/0.8741, allocations: 309.1 kB / 0.8811 GB, free: 11.9 MB / 0.7012 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.005957/0.8801, allocations: 2.543 MB / 0.8835 GB, free: 9.352 MB / 0.7012 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.006832/0.887, allocations: 3.435 MB / 0.8869 GB, free: 5.535 MB / 0.7012 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.01277/0.8998, allocations: 6.133 MB / 0.8929 GB, free: 14.99 MB / 0.7169 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.752e-05/0.8998, allocations: 8 kB / 0.8929 GB, free: 14.98 MB / 0.7169 GB Notification: Performance of matching and sorting (n=398) (initialization): time 0.02863/0.9285, allocations: 10.25 MB / 0.9029 GB, free: 4.664 MB / 0.7169 GB Notification: Performance of prepare postOptimizeDAE: time 0.0009858/0.9295, allocations: 0.8755 MB / 0.9038 GB, free: 3.406 MB / 0.7169 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.626e-05/0.9296, allocations: 31.94 kB / 0.9038 GB, free: 3.375 MB / 0.7169 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.5432/1.473, allocations: 5.665 MB / 0.9093 GB, free: 159.6 MB / 0.7169 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004834/1.478, allocations: 0.9843 MB / 0.9103 GB, free: 159.6 MB / 0.7169 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.03758/1.515, allocations: 21.6 MB / 0.9314 GB, free: 151.1 MB / 0.7169 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004546/1.52, allocations: 0.5455 MB / 0.9319 GB, free: 151.1 MB / 0.7169 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003602/1.52, allocations: 154.1 kB / 0.9321 GB, free: 151 MB / 0.7169 GB Notification: Performance of prepare postOptimizeDAE: time 9.258e-06/1.52, allocations: 3.031 kB / 0.9321 GB, free: 151 MB / 0.7169 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.01991/1.54, allocations: 8.442 MB / 0.9403 GB, free: 147.4 MB / 0.7169 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.129e-05/1.54, allocations: 35.39 kB / 0.9403 GB, free: 147.3 MB / 0.7169 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.01319/1.554, allocations: 3.535 MB / 0.9438 GB, free: 143.8 MB / 0.7169 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00486/1.558, allocations: 1.127 MB / 0.9449 GB, free: 142.7 MB / 0.7169 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01756/1.576, allocations: 11.82 MB / 0.9564 GB, free: 130.8 MB / 0.7169 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004541/1.581, allocations: 0.5265 MB / 0.9569 GB, free: 130.3 MB / 0.7169 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003112/1.581, allocations: 147.9 kB / 0.9571 GB, free: 130.2 MB / 0.7169 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 121 * 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 (304): * Single equations (assignments): 302 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(6,42,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(6,42)} Notification: Performance of prepare postOptimizeDAE: time 0.002588/1.584, allocations: 1.617 MB / 0.9587 GB, free: 128.5 MB / 0.7169 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0005042/1.584, allocations: 193.3 kB / 0.9589 GB, free: 128.4 MB / 0.7169 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.02399/1.608, allocations: 9.868 MB / 0.9685 GB, free: 118.5 MB / 0.7169 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.65e-05/1.608, allocations: 24 kB / 0.9685 GB, free: 118.5 MB / 0.7169 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.796e-05/1.608, allocations: 16 kB / 0.9685 GB, free: 118.5 MB / 0.7169 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.573e-05/1.608, allocations: 15.95 kB / 0.9685 GB, free: 118.5 MB / 0.7169 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.03115/1.639, allocations: 15.19 MB / 0.9834 GB, free: 103.1 MB / 0.7169 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.798e-05/1.639, allocations: 12.19 kB / 0.9834 GB, free: 103.1 MB / 0.7169 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.003176/1.643, allocations: 0.7357 MB / 0.9841 GB, free: 102.4 MB / 0.7169 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.01846/1.661, allocations: 5.338 MB / 0.9893 GB, free: 97.03 MB / 0.7169 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0006148/1.662, allocations: 79.89 kB / 0.9894 GB, free: 96.95 MB / 0.7169 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.02973/1.692, allocations: 20.43 MB / 1.009 GB, free: 76.25 MB / 0.7169 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 8.697e-06/1.692, allocations: 11.94 kB / 1.009 GB, free: 76.24 MB / 0.7169 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.02281/1.714, allocations: 9.38 MB / 1.019 GB, free: 66.67 MB / 0.7169 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001963/1.716, allocations: 0.6974 MB / 1.019 GB, free: 65.96 MB / 0.7169 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0009017/1.717, allocations: 56.23 kB / 1.019 GB, free: 65.9 MB / 0.7169 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.003914/1.721, allocations: 0.5109 MB / 1.02 GB, free: 65.39 MB / 0.7169 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0009917/1.722, allocations: 214.3 kB / 1.02 GB, free: 65.18 MB / 0.7169 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0003841/1.723, allocations: 91.95 kB / 1.02 GB, free: 65.09 MB / 0.7169 GB Notification: Performance of sorting global known variables: time 0.001738/1.724, allocations: 1.029 MB / 1.021 GB, free: 64.06 MB / 0.7169 GB Notification: Performance of sort global known variables: time 5.31e-07/1.724, allocations: 0 / 1.021 GB, free: 64.06 MB / 0.7169 GB Notification: Performance of remove unused functions: time 0.006121/1.731, allocations: 1.764 MB / 1.023 GB, free: 62.3 MB / 0.7169 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 40 * 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 (162): * Single equations (assignments): 160 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(6,42,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(6,42)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0004314/1.731, allocations: 187.8 kB / 1.023 GB, free: 62.11 MB / 0.7169 GB Notification: Performance of simCode: created initialization part: time 0.02587/1.757, allocations: 11.32 MB / 1.034 GB, free: 50.74 MB / 0.7169 GB Notification: Performance of simCode: created event and clocks part: time 1.581e-05/1.757, allocations: 4.375 kB / 1.034 GB, free: 50.73 MB / 0.7169 GB Notification: Performance of simCode: created simulation system equations: time 0.01035/1.767, allocations: 4.138 MB / 1.038 GB, free: 46.57 MB / 0.7169 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004066/1.771, allocations: 277.3 kB / 1.038 GB, free: 46.3 MB / 0.7169 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.024/1.795, allocations: 11.52 MB / 1.05 GB, free: 34.64 MB / 0.7169 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.002889/1.798, allocations: 2.864 MB / 1.052 GB, free: 31.74 MB / 0.7169 GB Notification: Performance of simCode: alias equations: time 0.005199/1.804, allocations: 1.656 MB / 1.054 GB, free: 30.08 MB / 0.7169 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0006982/1.804, allocations: 171.3 kB / 1.054 GB, free: 29.91 MB / 0.7169 GB Notification: Performance of SimCode: time 6.51e-07/1.804, allocations: 0 / 1.054 GB, free: 29.91 MB / 0.7169 GB Notification: Performance of Templates: time 0.0944/1.899, allocations: 66.76 MB / 1.119 GB, free: 11.35 MB / 0.7637 GB make -j1 -f Buildings_maint.7.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY.makefile Environment - environmentSimulation: (rm -f Buildings_maint.7.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY.pipe >> ../files/Buildings_maint.7.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY.sim & ./Buildings_maint.7.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.7.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY.pipe 2>&1) Environment - environmentSimulation: