Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepDown.YY.conf.json
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false)
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false)
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false)
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo", uses=false)
Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo)
Using package Modelica with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo)
Using package Complex with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo)
Using package ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo)
Running command: translateModel(IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepDown.YY,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepDown.YY")
translateModel(IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepDown.YY,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepDown.YY")
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0008827/0.0008828, allocations: 93.03 kB / 16.02 MB, free: 84 kB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.0008797/0.0008796, allocations: 174.5 kB / 16.92 MB, free: 6.68 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.424/1.424, allocations: 223.2 MB / 241 MB, free: 5.371 MB / 190.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo): time 0.688/0.688, allocations: 115.5 MB / 407.6 MB, free: 2.715 MB / 334.1 MB
Notification: Performance of FrontEnd - loaded program: time 0.0003644/0.0003644, allocations: 8.188 kB / 495.9 MB, free: 6.32 MB / 350.1 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.1713/0.1717, allocations: 77.53 MB / 0.56 GB, free: 8.992 MB / 430.1 MB
Notification: Performance of NFInst.instantiate(IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepDown.YY): time 0.02467/0.1964, allocations: 18.78 MB / 0.5783 GB, free: 6.141 MB / 446.1 MB
Notification: Performance of NFInst.instExpressions: time 0.2964/0.4928, allocations: 7.146 MB / 0.5853 GB, free: 13.54 MB / 446.1 MB
Notification: Performance of NFInst.updateImplicitVariability: time 0.001677/0.4945, allocations: 48.03 kB / 0.5854 GB, free: 13.54 MB / 446.1 MB
Notification: Performance of NFTyping.typeComponents: time 0.001165/0.4957, allocations: 421.2 kB / 0.5858 GB, free: 13.54 MB / 446.1 MB
Notification: Performance of NFTyping.typeBindings: time 0.003866/0.4996, allocations: 1.448 MB / 0.5872 GB, free: 13.48 MB / 446.1 MB
Notification: Performance of NFTyping.typeClassSections: time 0.002633/0.5022, allocations: 1.017 MB / 0.5882 GB, free: 13.46 MB / 446.1 MB
Notification: Performance of NFFlatten.flatten: time 0.01206/0.5143, allocations: 9.216 MB / 0.5972 GB, free: 13.25 MB / 446.1 MB
Notification: Performance of NFFlatten.resolveConnections: time 0.02059/0.5349, allocations: 10.22 MB / 0.6072 GB, free: 10.51 MB / 446.1 MB
Notification: Performance of NFEvalConstants.evaluate: time 0.005501/0.5405, allocations: 1.792 MB / 0.6089 GB, free: 9.883 MB / 446.1 MB
Notification: Performance of NFSimplifyModel.simplify: time 0.006231/0.5467, allocations: 2.86 MB / 0.6117 GB, free: 8.809 MB / 446.1 MB
Notification: Performance of NFPackage.collectConstants: time 0.001504/0.5483, allocations: 261.3 kB / 0.612 GB, free: 8.805 MB / 446.1 MB
Notification: Performance of NFFlatten.collectFunctions: time 0.003923/0.5522, allocations: 1.195 MB / 0.6131 GB, free: 8.355 MB / 446.1 MB
Notification: Performance of NFScalarize.scalarize: time 0.003509/0.5557, allocations: 2.037 MB / 0.6151 GB, free: 7.238 MB / 446.1 MB
Notification: Performance of NFVerifyModel.verify: time 0.004649/0.5604, allocations: 1.94 MB / 0.617 GB, free: 5.91 MB / 446.1 MB
Notification: Performance of NFConvertDAE.convert: time 0.008617/0.569, allocations: 8.135 MB / 0.6249 GB, free: 15.45 MB / 462.1 MB
Notification: Performance of FrontEnd - DAE generated: time 5.05e-06/0.5691, allocations: 4 kB / 0.6249 GB, free: 15.45 MB / 462.1 MB
Notification: Performance of FrontEnd: time 2.505e-06/0.5691, allocations: 4 kB / 0.625 GB, free: 15.45 MB / 462.1 MB
Notification: Performance of Transformations before backend: time 0.000252/0.5693, allocations: 0 / 0.625 GB, free: 15.45 MB / 462.1 MB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 1083
 * Number of variables: 1083
Notification: Performance of Generate backend data structure: time 0.008471/0.5778, allocations: 3.264 MB / 0.6281 GB, free: 12.15 MB / 462.1 MB
Notification: Performance of prepare preOptimizeDAE: time 4.167e-05/0.5779, allocations: 8.031 kB / 0.6281 GB, free: 12.14 MB / 462.1 MB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01395/0.5918, allocations: 2.456 MB / 0.6305 GB, free: 9.684 MB / 462.1 MB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.005149/0.597, allocations: 2.293 MB / 0.6328 GB, free: 7.363 MB / 462.1 MB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003111/0.5974, allocations: 293.1 kB / 0.6331 GB, free: 7.09 MB / 462.1 MB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.001442/0.5988, allocations: 380.8 kB / 0.6334 GB, free: 6.727 MB / 462.1 MB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.02118/0.62, allocations: 7.675 MB / 0.6409 GB, free: 14.96 MB / 478.1 MB
Notification: Performance of preOpt findStateOrder (simulation): time 0.0001507/0.6202, allocations: 3.906 kB / 0.6409 GB, free: 14.96 MB / 478.1 MB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.001311/0.6215, allocations: 165 kB / 0.6411 GB, free: 14.81 MB / 478.1 MB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0005559/0.6221, allocations: 346.6 kB / 0.6414 GB, free: 14.47 MB / 478.1 MB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01849/0.6406, allocations: 7.299 MB / 0.6485 GB, free: 7.16 MB / 478.1 MB
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 0.04489/0.6855, allocations: 28.57 MB / 0.6764 GB, free: 8.379 MB / 0.4981 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.008287/0.6938, allocations: 3.678 MB / 0.68 GB, free: 4.543 MB / 0.4981 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.005169/0.699, allocations: 1.991 MB / 0.682 GB, free: 2.535 MB / 0.4981 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0003013/0.6994, allocations: 127.8 kB / 0.6821 GB, free: 2.398 MB / 0.4981 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.772e-05/0.6995, allocations: 63.81 kB / 0.6822 GB, free: 2.328 MB / 0.4981 GB
Notification: Performance of pre-optimization done (n=176): time 3.757e-06/0.6995, allocations: 0 / 0.6822 GB, free: 2.328 MB / 0.4981 GB
Notification: Performance of matching and sorting (n=221): time 0.09004/0.7895, allocations: 24.74 MB / 0.7063 GB, free: 9.5 MB / 0.5294 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001362/0.7897, allocations: 231.6 kB / 0.7065 GB, free: 9.227 MB / 0.5294 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003112/0.7928, allocations: 1.614 MB / 0.7081 GB, free: 7.598 MB / 0.5294 GB
Notification: Performance of collectPreVariables (initialization): time 0.0004606/0.7933, allocations: 57.7 kB / 0.7082 GB, free: 7.535 MB / 0.5294 GB
Notification: Performance of collectInitialEqns (initialization): time 0.001385/0.7947, allocations: 1.731 MB / 0.7099 GB, free: 5.793 MB / 0.5294 GB
Notification: Performance of collectInitialBindings (initialization): time 0.001266/0.796, allocations: 0.7608 MB / 0.7106 GB, free: 5.039 MB / 0.5294 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0006255/0.7966, allocations: 256.2 kB / 0.7109 GB, free: 4.781 MB / 0.5294 GB
Notification: Performance of setup shared object (initialization): time 0.0001011/0.7967, allocations: 305.1 kB / 0.7111 GB, free: 4.48 MB / 0.5294 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.006164/0.8029, allocations: 2.481 MB / 0.7136 GB, free: 1.996 MB / 0.5294 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.007147/0.8101, allocations: 3.593 MB / 0.7171 GB, free: 13.9 MB / 0.545 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.01338/0.8235, allocations: 6.197 MB / 0.7231 GB, free: 7.223 MB / 0.545 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.366e-05/0.8235, allocations: 12 kB / 0.7231 GB, free: 7.211 MB / 0.545 GB
Notification: Performance of matching and sorting (n=400) (initialization): time 0.02864/0.8522, allocations: 10.06 MB / 0.733 GB, free: 13.12 MB / 0.5606 GB
Notification: Performance of prepare postOptimizeDAE: time 0.000847/0.8531, allocations: 1.12 MB / 0.7341 GB, free: 11.52 MB / 0.5606 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.639e-05/0.8532, allocations: 36 kB / 0.7341 GB, free: 11.49 MB / 0.5606 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.02142/0.8746, allocations: 5.558 MB / 0.7395 GB, free: 5.922 MB / 0.5606 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004558/0.8792, allocations: 1.034 MB / 0.7405 GB, free: 4.887 MB / 0.5606 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.03591/0.9151, allocations: 19.39 MB / 0.7595 GB, free: 1.266 MB / 0.5762 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004702/0.9199, allocations: 0.604 MB / 0.7601 GB, free: 0.6602 MB / 0.5762 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0006398/0.9205, allocations: 159.9 kB / 0.7602 GB, free: 0.5039 MB / 0.5762 GB
Notification: Performance of prepare postOptimizeDAE: time 8.666e-06/0.9205, allocations: 8 kB / 0.7602 GB, free: 0.4961 MB / 0.5762 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.02303/0.9436, allocations: 8.355 MB / 0.7684 GB, free: 8.133 MB / 0.5919 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0001206/0.9437, allocations: 36 kB / 0.7684 GB, free: 8.098 MB / 0.5919 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.0142/0.958, allocations: 3.434 MB / 0.7718 GB, free: 4.66 MB / 0.5919 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.005478/0.9635, allocations: 1.166 MB / 0.7729 GB, free: 3.492 MB / 0.5919 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.02018/0.9837, allocations: 10.61 MB / 0.7833 GB, free: 8.742 MB / 0.6075 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00466/0.9884, allocations: 0.5459 MB / 0.7838 GB, free: 8.195 MB / 0.6075 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0007036/0.9891, allocations: 160 kB / 0.7839 GB, free: 8.039 MB / 0.6075 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 159
 * 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 (330):
 * Single equations (assignments): 328
 * 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
   {(6,30,100.0%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 1 system
   {(6,30)}
Notification: Performance of prepare postOptimizeDAE: time 0.003777/0.9929, allocations: 1.702 MB / 0.7856 GB, free: 6.324 MB / 0.6075 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0008296/0.9937, allocations: 193.7 kB / 0.7858 GB, free: 6.133 MB / 0.6075 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.02644/1.02, allocations: 8.778 MB / 0.7944 GB, free: 13.32 MB / 0.6231 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.398e-05/1.02, allocations: 24 kB / 0.7944 GB, free: 13.3 MB / 0.6231 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 3.591e-05/1.02, allocations: 8 kB / 0.7944 GB, free: 13.29 MB / 0.6231 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.5e-05/1.02, allocations: 15.95 kB / 0.7944 GB, free: 13.27 MB / 0.6231 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.03668/1.057, allocations: 14.62 MB / 0.8087 GB, free: 14.49 MB / 0.6387 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.024e-05/1.057, allocations: 12 kB / 0.8087 GB, free: 14.48 MB / 0.6387 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.003493/1.061, allocations: 0.7146 MB / 0.8094 GB, free: 13.76 MB / 0.6387 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.02105/1.082, allocations: 5.219 MB / 0.8145 GB, free: 8.527 MB / 0.6387 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0006495/1.082, allocations: 63.95 kB / 0.8145 GB, free: 8.465 MB / 0.6387 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.4021/1.485, allocations: 18.25 MB / 0.8324 GB, free: 205.9 MB / 0.6387 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.302e-05/1.485, allocations: 11.62 kB / 0.8324 GB, free: 205.9 MB / 0.6387 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.02686/1.511, allocations: 8.853 MB / 0.841 GB, free: 203.5 MB / 0.6387 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.002058/1.514, allocations: 0.6629 MB / 0.8417 GB, free: 203.2 MB / 0.6387 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001002/1.515, allocations: 49.19 kB / 0.8417 GB, free: 203.2 MB / 0.6387 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.004166/1.519, allocations: 0.499 MB / 0.8422 GB, free: 203.2 MB / 0.6387 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0009624/1.52, allocations: 187.4 kB / 0.8424 GB, free: 203.1 MB / 0.6387 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0003898/1.52, allocations: 80.92 kB / 0.8425 GB, free: 203.1 MB / 0.6387 GB
Notification: Performance of sorting global known variables: time 0.002579/1.523, allocations: 1.083 MB / 0.8435 GB, free: 202.7 MB / 0.6387 GB
Notification: Performance of sort global known variables: time 3.61e-07/1.523, allocations: 0 / 0.8435 GB, free: 202.7 MB / 0.6387 GB
Notification: Performance of remove unused functions: time 0.008887/1.532, allocations: 1.738 MB / 0.8452 GB, free: 202.6 MB / 0.6387 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 (154):
 * Single equations (assignments): 152
 * 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
   {(6,30,100.0%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 1 system
   {(6,30)}
Notification: Performance of Backend phase and start with SimCode phase: time 0.0006885/1.532, allocations: 180 kB / 0.8454 GB, free: 202.4 MB / 0.6387 GB
Notification: Performance of simCode: created initialization part: time 0.02897/1.561, allocations: 10.92 MB / 0.8561 GB, free: 199.2 MB / 0.6387 GB
Notification: Performance of simCode: created event and clocks part: time 2.348e-05/1.561, allocations: 2.312 kB / 0.8561 GB, free: 199.2 MB / 0.6387 GB
Notification: Performance of simCode: created simulation system equations: time 0.01031/1.572, allocations: 3.829 MB / 0.8598 GB, free: 198.1 MB / 0.6387 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004651/1.576, allocations: 254.6 kB / 0.86 GB, free: 198 MB / 0.6387 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02516/1.602, allocations: 11.13 MB / 0.8709 GB, free: 192.6 MB / 0.6387 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.004329/1.606, allocations: 2.902 MB / 0.8737 GB, free: 190.8 MB / 0.6387 GB
Notification: Performance of simCode: alias equations: time 0.005161/1.611, allocations: 1.69 MB / 0.8754 GB, free: 189.4 MB / 0.6387 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0006128/1.612, allocations: 171.3 kB / 0.8756 GB, free: 189.2 MB / 0.6387 GB
Notification: Performance of SimCode: time 9.92e-07/1.612, allocations: 0 / 0.8756 GB, free: 189.2 MB / 0.6387 GB
Notification: Performance of Templates: time 0.08467/1.697, allocations: 62.54 MB / 0.9366 GB, free: 126.9 MB / 0.6387 GB
make -j1 -f IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepDown.YY.makefile
(rm -f IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepDown.YY.pipe ; mkfifo IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepDown.YY.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepDown.YY.pipe >> ../files/IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepDown.YY.sim & ./IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepDown.YY  -abortSlowSimulation -alarm=480 -lv LOG_STATS > IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepDown.YY.pipe 2>&1)