Running: ./testmodel.py --libraries=/var/lib/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8.0.0_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD.conf.json loadFile("/var/lib/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.0/package.mo", uses=false) loadFile("/var/lib/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo", uses=false) loadFile("/var/lib/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo", uses=false) loadFile("/var/lib/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo", uses=false) Using package ModelicaServices with version 3.2.3 (/var/lib/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo) Using package Modelica with version 3.2.3 (/var/lib/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo) Using package Complex with version 3.2.3 (/var/lib/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo) Using package Buildings with version 8.0.0 (/var/lib/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.0/package.mo) Running command: translateModel(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8.0.0_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD") translateModel(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8.0.0_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD") Notification: Performance of loadFile(/var/lib/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.0/package.mo): time 2.53/2.53, allocations: 287.5 MB / 302.5 MB, free: 8.227 MB / 234.7 MB Notification: Performance of loadFile(/var/lib/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.001569/0.001569, allocations: 171.7 kB / 371 MB, free: 10.78 MB / 298.7 MB Notification: Performance of loadFile(/var/lib/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 2.072/2.072, allocations: 205.4 MB / 0.6297 GB, free: 10.5 MB / 458.7 MB Notification: Performance of loadFile(/var/lib/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.001144/0.001144, allocations: 90.03 kB / 0.743 GB, free: 6.496 MB / 0.5573 GB Notification: Performance of FrontEnd - loaded program: time 0.0004967/0.0004967, allocations: 12.19 kB / 0.8659 GB, free: 141 MB / 0.6198 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2063/0.2068, allocations: 115.3 MB / 0.9784 GB, free: 28.25 MB / 0.6198 GB Notification: Performance of FrontEnd - scodeFlatten: time 1.151/1.358, allocations: 200.1 MB / 1.174 GB, free: 15.88 MB / 0.7136 GB Notification: Performance of FrontEnd - mkProgramGraph: time 0.00073/1.359, allocations: 119.8 kB / 1.174 GB, free: 15.8 MB / 0.7136 GB Notification: Performance of FrontEnd - DAE generated: time 0.7319/2.091, allocations: 139 MB / 1.31 GB, free: 15.53 MB / 0.8386 GB Notification: Performance of FrontEnd: time 4.869e-06/2.091, allocations: 3.984 kB / 1.31 GB, free: 15.53 MB / 0.8386 GB Notification: Performance of Transformations before backend: time 0.000202/2.091, allocations: 75.98 kB / 1.31 GB, free: 15.45 MB / 0.8386 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 0.0133/2.104, allocations: 3.112 MB / 1.313 GB, free: 12.28 MB / 0.8386 GB Notification: Performance of prepare preOptimizeDAE: time 4.873e-05/2.104, allocations: 12.03 kB / 1.313 GB, free: 12.27 MB / 0.8386 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.02383/2.128, allocations: 2.235 MB / 1.315 GB, free: 10.03 MB / 0.8386 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.007732/2.136, allocations: 2.197 MB / 1.317 GB, free: 7.781 MB / 0.8386 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0004586/2.137, allocations: 267.1 kB / 1.317 GB, free: 7.52 MB / 0.8386 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.00291/2.139, allocations: 352 kB / 1.318 GB, free: 7.176 MB / 0.8386 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.04097/2.181, allocations: 6.531 MB / 1.324 GB, free: 0.543 MB / 0.8386 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0002241/2.181, allocations: 7.938 kB / 1.324 GB, free: 0.5352 MB / 0.8386 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.002174/2.183, allocations: 152 kB / 1.324 GB, free: 396 kB / 0.8386 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.00137/2.184, allocations: 306.1 kB / 1.325 GB, free: 88 kB / 0.8386 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.04466/2.229, allocations: 6.439 MB / 1.331 GB, free: 9.637 MB / 0.8542 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 0.08859/2.318, allocations: 26.79 MB / 1.357 GB, free: 12.64 MB / 0.8855 GB Notification: Performance of preOpt comSubExp (simulation): time 0.04016/2.358, allocations: 4.993 MB / 1.362 GB, free: 7.34 MB / 0.8855 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0006753/2.359, allocations: 131.1 kB / 1.362 GB, free: 7.195 MB / 0.8855 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0001086/2.359, allocations: 60.56 kB / 1.362 GB, free: 7.129 MB / 0.8855 GB Notification: Performance of pre-optimization done (n=208): time 8.576e-06/2.359, allocations: 3.938 kB / 1.362 GB, free: 7.125 MB / 0.8855 GB Notification: Performance of matching and sorting (n=277): time 0.2366/2.596, allocations: 30.13 MB / 1.392 GB, free: 8.824 MB / 0.9167 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.000218/2.596, allocations: 239.6 kB / 1.392 GB, free: 8.539 MB / 0.9167 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.005357/2.601, allocations: 1.318 MB / 1.393 GB, free: 7.215 MB / 0.9167 GB Notification: Performance of collectPreVariables (initialization): time 0.0009858/2.602, allocations: 73.7 kB / 1.393 GB, free: 7.137 MB / 0.9167 GB Notification: Performance of collectInitialEqns (initialization): time 0.002336/2.605, allocations: 1.497 MB / 1.395 GB, free: 5.617 MB / 0.9167 GB Notification: Performance of collectInitialBindings (initialization): time 0.002529/2.607, allocations: 0.9396 MB / 1.395 GB, free: 4.664 MB / 0.9167 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.00118/2.609, allocations: 64 kB / 1.396 GB, free: 4.602 MB / 0.9167 GB Notification: Performance of setup shared object (initialization): time 0.0006054/2.609, allocations: 448.8 kB / 1.396 GB, free: 4.156 MB / 0.9167 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.01774/2.627, allocations: 2.602 MB / 1.399 GB, free: 1.551 MB / 0.9167 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.02016/2.647, allocations: 3.5 MB / 1.402 GB, free: 13.66 MB / 0.9323 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.02026/2.668, allocations: 3.056 MB / 1.405 GB, free: 10.59 MB / 0.9323 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.71e-05/2.668, allocations: 12 kB / 1.405 GB, free: 10.57 MB / 0.9323 GB Notification: Performance of matching and sorting (n=416) (initialization): time 0.06587/2.734, allocations: 9.161 MB / 1.414 GB, free: 1.352 MB / 0.9323 GB Notification: Performance of prepare postOptimizeDAE: time 0.006545/2.74, allocations: 10.61 MB / 1.424 GB, free: 5.898 MB / 0.948 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0001477/2.74, allocations: 32 kB / 1.424 GB, free: 5.867 MB / 0.948 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.8286/3.569, allocations: 6.249 MB / 1.43 GB, free: 263.9 MB / 0.948 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.01141/3.58, allocations: 0.8726 MB / 1.431 GB, free: 263.9 MB / 0.948 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.06967/3.65, allocations: 15.32 MB / 1.446 GB, free: 262.1 MB / 0.948 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.01118/3.661, allocations: 0.5308 MB / 1.447 GB, free: 262.1 MB / 0.948 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001219/3.663, allocations: 171.9 kB / 1.447 GB, free: 262.1 MB / 0.948 GB Notification: Performance of prepare postOptimizeDAE: time 1.795e-05/3.663, allocations: 3.656 kB / 1.447 GB, free: 262.1 MB / 0.948 GB Warning: The linear system: 1 : line2.i3[1] - transformer.conv2.terminal_p.i[1] = -transformer.conv3.terminal_p.i[1] 2 : line2.i2[1] - transformer.conv1.terminal_p.i[1] = -transformer.conv2.terminal_p.i[1] 3 : line2.i1[1] - transformer.conv3.terminal_p.i[1] = -transformer.conv1.terminal_p.i[1] [ 1.0 , 0.0 , -1.0 ; 0.0 , -1.0 , 1.0 ; -1.0 , 1.0 , 0.0 ] * [ transformer.conv3.terminal_p.i[1] ; transformer.conv1.terminal_p.i[1] ; transformer.conv2.terminal_p.i[1] ] = [ -line2.i3[1] ; -line2.i2[1] ; -line2.i1[1] ] might be structurally or numerically singular for variable transformer.conv2.terminal_p.i[1] since U(3,3) = 0.0. It might be hard to solve. Compilation continues anyway. Warning: The linear system: 1 : line2.i3[2] - transformer.conv2.terminal_p.i[2] = -transformer.conv3.terminal_p.i[2] 2 : line2.i1[2] - transformer.conv3.terminal_p.i[2] = -transformer.conv1.terminal_p.i[2] 3 : line2.i2[2] - transformer.conv1.terminal_p.i[2] = -transformer.conv2.terminal_p.i[2] [ -1.0 , 0.0 , 1.0 ; 0.0 , 1.0 , -1.0 ; 1.0 , -1.0 , 0.0 ] * [ transformer.conv2.terminal_p.i[2] ; transformer.conv1.terminal_p.i[2] ; transformer.conv3.terminal_p.i[2] ] = [ -line2.i3[2] ; -line2.i1[2] ; -line2.i2[2] ] might be structurally or numerically singular for variable transformer.conv3.terminal_p.i[2] since U(3,3) = 0.0. It might be hard to solve. Compilation continues anyway. Warning: The linear system: 1 : transformer.conv1.V2[2] = line2.v1_n[2] - line2.v2_n[2] 2 : transformer.conv2.V2[2] = line2.v2_n[2] - line2.v3_n[2] 3 : transformer.conv3.V2[2] = line2.v3_n[2] - line2.v1_n[2] [ -1.0 , 0.0 , 1.0 ; 0.0 , 1.0 , -1.0 ; 1.0 , -1.0 , 0.0 ] * [ line2.v1_n[2] ; line2.v3_n[2] ; line2.v2_n[2] ] = [ -transformer.conv1.V2[2] ; -transformer.conv2.V2[2] ; -transformer.conv3.V2[2] ] might be structurally or numerically singular for variable line2.v2_n[2] since U(3,3) = 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 : transformer.conv2.V2[1] = line2.v2_n[1] - line2.v3_n[1] 3 : transformer.conv3.V2[1] = line2.v3_n[1] - line2.v1_n[1] [ -1.0 , 0.0 , 1.0 ; 0.0 , 1.0 , -1.0 ; 1.0 , -1.0 , 0.0 ] * [ line2.v1_n[1] ; line2.v3_n[1] ; line2.v2_n[1] ] = [ -transformer.conv1.V2[1] ; -transformer.conv2.V2[1] ; -transformer.conv3.V2[1] ] might be structurally or numerically singular for variable line2.v2_n[1] since U(3,3) = 0.0. It might be hard to solve. Compilation continues anyway. Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.05279/3.716, allocations: 9.326 MB / 1.456 GB, free: 261.1 MB / 0.948 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0001667/3.716, allocations: 26.28 kB / 1.456 GB, free: 261.1 MB / 0.948 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.03241/3.748, allocations: 3.523 MB / 1.459 GB, free: 261 MB / 0.948 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.01065/3.759, allocations: 1.021 MB / 1.46 GB, free: 261 MB / 0.948 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.04131/3.8, allocations: 24.42 MB / 1.484 GB, free: 248.4 MB / 0.948 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.007249/3.808, allocations: 0.5095 MB / 1.485 GB, free: 248.4 MB / 0.948 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001129/3.809, allocations: 174.3 kB / 1.485 GB, free: 248.4 MB / 0.948 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 122 * 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 (298): * Single equations (assignments): 296 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 1 {(10,74.0%) 50} * Non-linear torn systems: 1 {10 50} Notification: Performance of prepare postOptimizeDAE: time 0.004597/3.813, allocations: 1.577 MB / 1.486 GB, free: 248.2 MB / 0.948 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0009168/3.814, allocations: 203.4 kB / 1.487 GB, free: 248.2 MB / 0.948 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.04391/3.858, allocations: 8.696 MB / 1.495 GB, free: 246.6 MB / 0.948 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.124e-05/3.858, allocations: 25.94 kB / 1.495 GB, free: 246.6 MB / 0.948 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.44e-05/3.858, allocations: 14.97 kB / 1.495 GB, free: 246.6 MB / 0.948 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 8.303e-05/3.859, allocations: 16.02 kB / 1.495 GB, free: 246.6 MB / 0.948 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.07445/3.933, allocations: 14.32 MB / 1.509 GB, free: 241.6 MB / 0.948 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.098e-05/3.933, allocations: 7.531 kB / 1.509 GB, free: 241.6 MB / 0.948 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.007828/3.941, allocations: 0.6266 MB / 1.51 GB, free: 241.6 MB / 0.948 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0594/4, allocations: 6.013 MB / 1.516 GB, free: 241 MB / 0.948 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0009696/4.001, allocations: 84.86 kB / 1.516 GB, free: 241 MB / 0.948 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.05505/4.057, allocations: 14.95 MB / 1.53 GB, free: 234.1 MB / 0.948 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.85e-05/4.057, allocations: 10.72 kB / 1.53 GB, free: 234.1 MB / 0.948 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.04227/4.099, allocations: 9.115 MB / 1.539 GB, free: 230.5 MB / 0.948 GB Notification: Performance of postOpt removeConstants (simulation): time 0.002631/4.102, allocations: 0.7457 MB / 1.54 GB, free: 230.1 MB / 0.948 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0008795/4.103, allocations: 56.5 kB / 1.54 GB, free: 230.1 MB / 0.948 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.006712/4.109, allocations: 494.9 kB / 1.541 GB, free: 230.1 MB / 0.948 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.001176/4.11, allocations: 205.8 kB / 1.541 GB, free: 230 MB / 0.948 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0004848/4.111, allocations: 113.8 kB / 1.541 GB, free: 230 MB / 0.948 GB Notification: Performance of sorting global known variables: time 0.002243/4.113, allocations: 0.997 MB / 1.542 GB, free: 229.7 MB / 0.948 GB Notification: Performance of sort global known variables: time 5.51e-07/4.113, allocations: 0 / 1.542 GB, free: 229.7 MB / 0.948 GB Notification: Performance of remove unused functions: time 0.01165/4.125, allocations: 1.696 MB / 1.543 GB, free: 229.5 MB / 0.948 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 (162): * Single equations (assignments): 160 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 1 {(10,73.0%) 50} * Non-linear torn systems: 1 {10 50} Notification: Performance of Backend phase and start with SimCode phase: time 0.001345/4.126, allocations: 197.1 kB / 1.544 GB, free: 229.4 MB / 0.948 GB Notification: Performance of simCode: created initialization part: time 0.06718/4.194, allocations: 11.49 MB / 1.555 GB, free: 225.7 MB / 0.948 GB Notification: Performance of simCode: created event and clocks part: time 2.358e-05/4.194, allocations: 0 / 1.555 GB, free: 225.7 MB / 0.948 GB Notification: Performance of simCode: created simulation system equations: time 0.02288/4.217, allocations: 3.826 MB / 1.559 GB, free: 224.6 MB / 0.948 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003767/4.22, allocations: 217.6 kB / 1.559 GB, free: 224.5 MB / 0.948 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.06075/4.281, allocations: 10.77 MB / 1.569 GB, free: 219.7 MB / 0.948 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.008508/4.29, allocations: 2.85 MB / 1.572 GB, free: 217.4 MB / 0.948 GB Notification: Performance of simCode: alias equations: time 0.01388/4.304, allocations: 1.669 MB / 1.574 GB, free: 216.4 MB / 0.948 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.00191/4.306, allocations: 164.4 kB / 1.574 GB, free: 216.2 MB / 0.948 GB Notification: Performance of SimCode: time 2.094e-06/4.306, allocations: 0 / 1.574 GB, free: 216.2 MB / 0.948 GB Notification: Performance of Templates: time 0.1438/4.45, allocations: 61.75 MB / 1.634 GB, free: 161.4 MB / 0.948 GB make -j1 -f Buildings_8.0.0_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD.makefile (rm -f Buildings_8.0.0_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD.pipe ; mkfifo Buildings_8.0.0_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD.pipe ; head -c 1048576 < Buildings_8.0.0_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD.pipe >> ../files/Buildings_8.0.0_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD.sim & ./Buildings_8.0.0_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8.0.0_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.YD.pipe 2>&1)