Running: ./testmodel.py --libraries=/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ --ompython_omhome=/usr PowerSystems_PowerSystems.Examples.PowerWorld.Test.HydroPlantTest1.conf.json loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false) loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/PowerSystems 1.0.0/package.mo", uses=false) Using package PowerSystems with version 1.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/PowerSystems 1.0.0/package.mo) Using package ModelicaServices with version 4.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Using package Modelica with version 4.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo) Using package Complex with version 4.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo) Running command: translateModel(PowerSystems.Examples.PowerWorld.Test.HydroPlantTest1,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="PowerSystems_PowerSystems.Examples.PowerWorld.Test.HydroPlantTest1") translateModel(PowerSystems.Examples.PowerWorld.Test.HydroPlantTest1,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="PowerSystems_PowerSystems.Examples.PowerWorld.Test.HydroPlantTest1") Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00093/0.0009302, allocations: 182.4 kB / 16.71 MB, free: 4.969 MB / 13.93 MB Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.395/1.395, allocations: 225.7 MB / 243.2 MB, free: 8.531 MB / 202.7 MB Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0008142/0.0008144, allocations: 98.41 kB / 294.4 MB, free: 9.535 MB / 234.7 MB Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/PowerSystems 1.0.0/package.mo): time 0.3592/0.3592, allocations: 38.12 MB / 383.6 MB, free: 40.37 MB / 298.7 MB Notification: Performance of FrontEnd - loaded program: time 0.0005195/0.0005193, allocations: 8 kB / 453.5 MB, free: 8.824 MB / 330.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3306/0.3311, allocations: 59.13 MB / 0.5006 GB, free: 38.85 MB / 378.7 MB Notification: Performance of NFInst.instantiate(PowerSystems.Examples.PowerWorld.Test.HydroPlantTest1): time 0.005386/0.3365, allocations: 4.986 MB / 0.5055 GB, free: 38.12 MB / 378.7 MB Notification: Performance of NFInst.instExpressions: time 0.00343/0.34, allocations: 3.216 MB / 0.5086 GB, free: 35.3 MB / 378.7 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0004716/0.3405, allocations: 30.22 kB / 0.5086 GB, free: 35.29 MB / 378.7 MB Notification: Performance of NFTyping.typeComponents: time 0.0004014/0.3409, allocations: 88.12 kB / 0.5087 GB, free: 35.25 MB / 378.7 MB Notification: Performance of NFTyping.typeBindings: time 0.0007162/0.3417, allocations: 302.2 kB / 0.509 GB, free: 35.08 MB / 378.7 MB Notification: Performance of NFTyping.typeClassSections: time 0.0007574/0.3424, allocations: 363.2 kB / 0.5094 GB, free: 34.86 MB / 378.7 MB Notification: Performance of NFFlatten.flatten: time 0.000961/0.3434, allocations: 0.9971 MB / 0.5103 GB, free: 34.45 MB / 378.7 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0009087/0.3443, allocations: 0.7998 MB / 0.5111 GB, free: 33.84 MB / 378.7 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0004004/0.3447, allocations: 272.4 kB / 0.5114 GB, free: 33.72 MB / 378.7 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0003719/0.3451, allocations: 305.3 kB / 0.5117 GB, free: 33.58 MB / 378.7 MB Notification: Performance of NFPackage.collectConstants: time 6.69e-05/0.3452, allocations: 23.59 kB / 0.5117 GB, free: 33.58 MB / 378.7 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0005929/0.3458, allocations: 355 kB / 0.512 GB, free: 33.46 MB / 378.7 MB Notification: Performance of NFScalarize.scalarize: time 0.0001488/0.3459, allocations: 132.8 kB / 0.5121 GB, free: 33.41 MB / 378.7 MB Notification: Performance of NFVerifyModel.verify: time 0.0002404/0.3462, allocations: 303 kB / 0.5124 GB, free: 33.2 MB / 378.7 MB Notification: Performance of NFConvertDAE.convert: time 0.0006563/0.3469, allocations: 0.8808 MB / 0.5133 GB, free: 32.92 MB / 378.7 MB Notification: Performance of FrontEnd - DAE generated: time 6.292e-06/0.3469, allocations: 2.188 kB / 0.5133 GB, free: 32.92 MB / 378.7 MB Notification: Performance of FrontEnd: time 1.543e-06/0.3469, allocations: 0 / 0.5133 GB, free: 32.92 MB / 378.7 MB Notification: Performance of Transformations before backend: time 9.247e-06/0.3469, allocations: 0 / 0.5133 GB, free: 32.92 MB / 378.7 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 127 * Number of variables: 127 Notification: Performance of Generate backend data structure: time 0.001455/0.3484, allocations: 0.9184 MB / 0.5142 GB, free: 32.27 MB / 378.7 MB Notification: Performance of prepare preOptimizeDAE: time 3.45e-05/0.3484, allocations: 10.84 kB / 0.5142 GB, free: 32.27 MB / 378.7 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0007618/0.3492, allocations: 141.6 kB / 0.5143 GB, free: 32.23 MB / 378.7 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.000714/0.3499, allocations: 0.5139 MB / 0.5148 GB, free: 31.86 MB / 378.7 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.854e-05/0.35, allocations: 40.97 kB / 0.5149 GB, free: 31.84 MB / 378.7 MB Notification: Performance of preOpt expandDerOperator (simulation): time 7.785e-05/0.35, allocations: 51.48 kB / 0.5149 GB, free: 31.82 MB / 378.7 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001102/0.3512, allocations: 0.694 MB / 0.5156 GB, free: 31.49 MB / 378.7 MB Notification: Performance of preOpt findStateOrder (simulation): time 2.077e-05/0.3512, allocations: 6.875 kB / 0.5156 GB, free: 31.48 MB / 378.7 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.814e-05/0.3512, allocations: 16.69 kB / 0.5156 GB, free: 31.47 MB / 378.7 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.561e-05/0.3513, allocations: 31.25 kB / 0.5157 GB, free: 31.47 MB / 378.7 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001213/0.3525, allocations: 0.6287 MB / 0.5163 GB, free: 31.27 MB / 378.7 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002962/0.3555, allocations: 2.706 MB / 0.5189 GB, free: 29.37 MB / 378.7 MB Notification: Performance of preOpt comSubExp (simulation): time 0.001189/0.3567, allocations: 0.6441 MB / 0.5195 GB, free: 29.05 MB / 378.7 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0004083/0.3571, allocations: 220.4 kB / 0.5198 GB, free: 28.97 MB / 378.7 MB Notification: Performance of preOpt evalFunc (simulation): time 3.311e-05/0.3572, allocations: 10.14 kB / 0.5198 GB, free: 28.97 MB / 378.7 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0005498/0.3577, allocations: 315.9 kB / 0.5201 GB, free: 28.82 MB / 378.7 MB Notification: Performance of pre-optimization done (n=41): time 1.924e-06/0.3577, allocations: 0 / 0.5201 GB, free: 28.82 MB / 378.7 MB Notification: Performance of matching and sorting (n=41): time 0.001597/0.3593, allocations: 0.7892 MB / 0.5208 GB, free: 28.47 MB / 378.7 MB Notification: Performance of inlineWhenForInitialization (initialization): time 4.741e-05/0.3594, allocations: 142.5 kB / 0.521 GB, free: 28.31 MB / 378.7 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0005744/0.36, allocations: 490.9 kB / 0.5214 GB, free: 28.09 MB / 378.7 MB Notification: Performance of collectPreVariables (initialization): time 3.334e-05/0.36, allocations: 36.8 kB / 0.5215 GB, free: 28.05 MB / 378.7 MB Notification: Performance of collectInitialEqns (initialization): time 0.000156/0.3602, allocations: 307.1 kB / 0.5218 GB, free: 27.8 MB / 378.7 MB Notification: Performance of collectInitialBindings (initialization): time 8.328e-05/0.3603, allocations: 140.1 kB / 0.5219 GB, free: 27.69 MB / 378.7 MB Notification: Performance of simplifyInitialFunctions (initialization): time 2.244e-05/0.3603, allocations: 12.03 kB / 0.5219 GB, free: 27.68 MB / 378.7 MB Notification: Performance of setup shared object (initialization): time 7.323e-05/0.3604, allocations: 371.4 kB / 0.5223 GB, free: 27.34 MB / 378.7 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004116/0.3608, allocations: 203.4 kB / 0.5225 GB, free: 27.28 MB / 378.7 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004318/0.3612, allocations: 325.7 kB / 0.5228 GB, free: 27.07 MB / 378.7 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.0008188/0.3621, allocations: 0.5468 MB / 0.5233 GB, free: 26.75 MB / 378.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.617e-06/0.3621, allocations: 2.781 kB / 0.5233 GB, free: 26.75 MB / 378.7 MB Notification: Performance of matching and sorting (n=59) (initialization): time 0.001601/0.3637, allocations: 0.8241 MB / 0.5241 GB, free: 26.43 MB / 378.7 MB Notification: Performance of prepare postOptimizeDAE: time 9.136e-05/0.3638, allocations: 209.8 kB / 0.5243 GB, free: 26.18 MB / 378.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.476e-06/0.3638, allocations: 2.562 kB / 0.5243 GB, free: 26.18 MB / 378.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004763/0.3643, allocations: 145.5 kB / 0.5245 GB, free: 26.13 MB / 378.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003588/0.3646, allocations: 98.89 kB / 0.5245 GB, free: 26.12 MB / 378.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002563/0.3672, allocations: 2.479 MB / 0.527 GB, free: 24.22 MB / 378.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004748/0.3677, allocations: 96.17 kB / 0.5271 GB, free: 24.18 MB / 378.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.496e-05/0.3678, allocations: 16.84 kB / 0.5271 GB, free: 24.17 MB / 378.7 MB Notification: Performance of prepare postOptimizeDAE: time 5.48e-06/0.3678, allocations: 6.719 kB / 0.5271 GB, free: 24.17 MB / 378.7 MB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.001114/0.3689, allocations: 0.6377 MB / 0.5277 GB, free: 23.91 MB / 378.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.939e-06/0.3689, allocations: 3.094 kB / 0.5277 GB, free: 23.91 MB / 378.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0003002/0.3692, allocations: 127.3 kB / 0.5278 GB, free: 23.87 MB / 378.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003241/0.3695, allocations: 97.5 kB / 0.5279 GB, free: 23.86 MB / 378.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001781/0.3713, allocations: 2.241 MB / 0.5301 GB, free: 22.02 MB / 378.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.000435/0.3718, allocations: 77.83 kB / 0.5302 GB, free: 21.98 MB / 378.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.612e-05/0.3718, allocations: 14.66 kB / 0.5302 GB, free: 21.98 MB / 378.7 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 15 * Number of states: 0 () * Number of discrete variables: 7 (system.initime,$whenCondition1,$PRE.trapezoid.T_start,trapezoid.T_start,$PRE.trapezoid.count,trapezoid.count,hydroPlant.reservoirLevel.local_reset) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (45): * Single equations (assignments): 43 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,13)} Notification: Performance of prepare postOptimizeDAE: time 0.0003779/0.3722, allocations: 295.5 kB / 0.5305 GB, free: 21.73 MB / 378.7 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 7.395e-05/0.3723, allocations: 56.16 kB / 0.5305 GB, free: 21.7 MB / 378.7 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001071/0.3734, allocations: 0.5439 MB / 0.5311 GB, free: 21.47 MB / 378.7 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.841e-06/0.3734, allocations: 6.125 kB / 0.5311 GB, free: 21.47 MB / 378.7 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.106e-06/0.3734, allocations: 0 / 0.5311 GB, free: 21.47 MB / 378.7 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 7.675e-06/0.3734, allocations: 6.328 kB / 0.5311 GB, free: 21.47 MB / 378.7 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001667/0.3751, allocations: 1.195 MB / 0.5322 GB, free: 20.82 MB / 378.7 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.216e-06/0.3751, allocations: 0 / 0.5322 GB, free: 20.82 MB / 378.7 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004075/0.3755, allocations: 94.08 kB / 0.5323 GB, free: 20.82 MB / 378.7 MB Notification: Performance of postOpt tearingSystem (simulation): time 8.983e-05/0.3756, allocations: 32.84 kB / 0.5324 GB, free: 20.8 MB / 378.7 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.073e-05/0.3757, allocations: 10.48 kB / 0.5324 GB, free: 20.79 MB / 378.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0006243/0.3763, allocations: 1.355 MB / 0.5337 GB, free: 19.43 MB / 378.7 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.817e-06/0.3763, allocations: 6.375 kB / 0.5337 GB, free: 19.43 MB / 378.7 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001413/0.3777, allocations: 0.8828 MB / 0.5346 GB, free: 19.01 MB / 378.7 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0001718/0.3779, allocations: 171.4 kB / 0.5347 GB, free: 18.86 MB / 378.7 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 6.328e-05/0.378, allocations: 14.19 kB / 0.5347 GB, free: 18.85 MB / 378.7 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003713/0.3784, allocations: 51.06 kB / 0.5348 GB, free: 18.84 MB / 378.7 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001161/0.3785, allocations: 35.16 kB / 0.5348 GB, free: 18.84 MB / 378.7 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.897e-05/0.3785, allocations: 10.19 kB / 0.5348 GB, free: 18.83 MB / 378.7 MB Notification: Performance of sorting global known variables: time 0.0004661/0.379, allocations: 358.7 kB / 0.5352 GB, free: 18.67 MB / 378.7 MB Notification: Performance of sort global known variables: time 1.7e-07/0.379, allocations: 3.156 kB / 0.5352 GB, free: 18.67 MB / 378.7 MB Notification: Performance of remove unused functions: time 0.0007858/0.3798, allocations: 250.1 kB / 0.5354 GB, free: 18.61 MB / 378.7 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 4 (hydroPlant.reservoirLevel.y,hydroPlant.rotor.phi,hydroPlant.rotor.w,hydroPlant.controlDynamics.x_scaled[1]) * Number of discrete variables: 4 (system.initime,$whenCondition1,trapezoid.T_start,trapezoid.count) * Number of discrete states: 1 (trapezoid.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (40): * Single equations (assignments): 36 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 3 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(1,2,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0001369/0.3799, allocations: 117 kB / 0.5355 GB, free: 18.51 MB / 378.7 MB Notification: Performance of simCode: created initialization part: time 0.001859/0.3818, allocations: 1.179 MB / 0.5367 GB, free: 17.86 MB / 378.7 MB Notification: Performance of simCode: created event and clocks part: time 3.747e-06/0.3818, allocations: 3.938 kB / 0.5367 GB, free: 17.85 MB / 378.7 MB Notification: Performance of simCode: created simulation system equations: time 0.0005295/0.3824, allocations: 366.7 kB / 0.537 GB, free: 17.66 MB / 378.7 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0006491/0.383, allocations: 108.2 kB / 0.5371 GB, free: 17.62 MB / 378.7 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001868/0.3849, allocations: 1.527 MB / 0.5386 GB, free: 16.66 MB / 378.7 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0003069/0.3852, allocations: 0.8985 MB / 0.5395 GB, free: 15.95 MB / 378.7 MB Notification: Performance of simCode: alias equations: time 0.0003385/0.3856, allocations: 106.5 kB / 0.5396 GB, free: 15.93 MB / 378.7 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001144/0.3857, allocations: 41.97 kB / 0.5397 GB, free: 15.91 MB / 378.7 MB Notification: Performance of SimCode: time 3.2e-07/0.3857, allocations: 0 / 0.5397 GB, free: 15.91 MB / 378.7 MB Notification: Performance of Templates: time 0.01438/0.4001, allocations: 7.598 MB / 0.5471 GB, free: 15.36 MB / 378.7 MB make -j1 -f PowerSystems_PowerSystems.Examples.PowerWorld.Test.HydroPlantTest1.makefile (rm -f PowerSystems_PowerSystems.Examples.PowerWorld.Test.HydroPlantTest1.pipe ; mkfifo PowerSystems_PowerSystems.Examples.PowerWorld.Test.HydroPlantTest1.pipe ; head -c 1048576 < PowerSystems_PowerSystems.Examples.PowerWorld.Test.HydroPlantTest1.pipe >> ../files/PowerSystems_PowerSystems.Examples.PowerWorld.Test.HydroPlantTest1.sim & ./PowerSystems_PowerSystems.Examples.PowerWorld.Test.HydroPlantTest1 -abortSlowSimulation -alarm=480 -lv LOG_STATS > PowerSystems_PowerSystems.Examples.PowerWorld.Test.HydroPlantTest1.pipe 2>&1)