Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr PowerSystems_PowerSystems.Examples.PowerWorld.Test.HydroPlantTest1.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/PowerSystems 2.0.0/package.mo", uses=false) Using package PowerSystems with version 2.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/PowerSystems 2.0.0/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(PowerSystems.Examples.PowerWorld.Test.HydroPlantTest1,fileNamePrefix="PowerSystems_PowerSystems_Examples_PowerWorld_Test_HydroPlantTest1",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(PowerSystems.Examples.PowerWorld.Test.HydroPlantTest1,fileNamePrefix="PowerSystems_PowerSystems_Examples_PowerWorld_Test_HydroPlantTest1",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 0.001255/0.001255, allocations: 114 kB / 17.06 MB, free: 6.016 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001246/0.001246, allocations: 189.4 kB / 18 MB, free: 5.098 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.367/1.367, allocations: 222.9 MB / 241.7 MB, free: 15.16 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/PowerSystems 2.0.0/package.mo): time 0.177/0.177, allocations: 38.04 MB / 329.9 MB, free: 8.672 MB / 270.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001853/0.001853, allocations: 63.91 kB / 457.6 MB, free: 7.328 MB / 334.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.324/0.3259, allocations: 58.06 MB / 0.5036 GB, free: 7.453 MB / 382.1 MB Notification: Performance of NFInst.instantiate(PowerSystems.Examples.PowerWorld.Test.HydroPlantTest1): time 0.005445/0.3314, allocations: 5.128 MB / 0.5086 GB, free: 3.848 MB / 382.1 MB Notification: Performance of NFInst.instExpressions: time 0.003227/0.3346, allocations: 2.139 MB / 0.5107 GB, free: 2.328 MB / 382.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0004443/0.3351, allocations: 23.16 kB / 0.5107 GB, free: 2.32 MB / 382.1 MB Notification: Performance of NFTyping.typeComponents: time 0.0008557/0.336, allocations: 261.5 kB / 0.511 GB, free: 2.156 MB / 382.1 MB Notification: Performance of NFTyping.typeBindings: time 0.0007714/0.3368, allocations: 340.4 kB / 0.5113 GB, free: 1.953 MB / 382.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.0009359/0.3377, allocations: 402.7 kB / 0.5117 GB, free: 1.727 MB / 382.1 MB Notification: Performance of NFFlatten.flatten: time 0.001035/0.3388, allocations: 0.9052 MB / 0.5126 GB, free: 1.285 MB / 382.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0006938/0.3395, allocations: 0.5095 MB / 0.5131 GB, free: 1.027 MB / 382.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0004409/0.3399, allocations: 345.5 kB / 0.5134 GB, free: 0.8555 MB / 382.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0004375/0.3404, allocations: 356.6 kB / 0.5137 GB, free: 0.6758 MB / 382.1 MB Notification: Performance of NFPackage.collectConstants: time 0.0001061/0.3405, allocations: 67.75 kB / 0.5138 GB, free: 0.6758 MB / 382.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0005953/0.3411, allocations: 339.4 kB / 0.5141 GB, free: 0.5664 MB / 382.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0001894/0.3413, allocations: 195.4 kB / 0.5143 GB, free: 464 kB / 382.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0002634/0.3415, allocations: 331.1 kB / 0.5146 GB, free: 236 kB / 382.1 MB Notification: Performance of NFConvertDAE.convert: time 0.00123/0.3428, allocations: 0.9274 MB / 0.5155 GB, free: 15.84 MB / 398.1 MB Notification: Performance of FrontEnd - DAE generated: time 4.729e-06/0.3428, allocations: 1.062 kB / 0.5155 GB, free: 15.84 MB / 398.1 MB Notification: Performance of FrontEnd: time 4.519e-06/0.3428, allocations: 0.8906 kB / 0.5155 GB, free: 15.84 MB / 398.1 MB Notification: Performance of Transformations before backend: time 9.909e-06/0.3428, allocations: 3.938 kB / 0.5155 GB, free: 15.84 MB / 398.1 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 0.002119/0.345, allocations: 1.056 MB / 0.5166 GB, free: 15.07 MB / 398.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.102e-05/0.345, allocations: 13.64 kB / 0.5166 GB, free: 15.07 MB / 398.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001205/0.3451, allocations: 95.88 kB / 0.5167 GB, free: 15 MB / 398.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0008488/0.346, allocations: 149.4 kB / 0.5168 GB, free: 14.95 MB / 398.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0009872/0.347, allocations: 0.5297 MB / 0.5173 GB, free: 14.58 MB / 398.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.131e-05/0.347, allocations: 38.05 kB / 0.5174 GB, free: 14.56 MB / 398.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001198/0.3472, allocations: 50.67 kB / 0.5174 GB, free: 14.54 MB / 398.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001407/0.3486, allocations: 0.6823 MB / 0.5181 GB, free: 14.21 MB / 398.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 2.626e-05/0.3486, allocations: 5.156 kB / 0.5181 GB, free: 14.21 MB / 398.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.79e-05/0.3487, allocations: 17.81 kB / 0.5181 GB, free: 14.2 MB / 398.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 5.345e-05/0.3487, allocations: 29.3 kB / 0.5181 GB, free: 14.19 MB / 398.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001397/0.3501, allocations: 0.5997 MB / 0.5187 GB, free: 14 MB / 398.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.003771/0.3539, allocations: 2.686 MB / 0.5213 GB, free: 12.09 MB / 398.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.001383/0.3553, allocations: 0.6107 MB / 0.5219 GB, free: 11.78 MB / 398.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.000498/0.3558, allocations: 212.8 kB / 0.5221 GB, free: 11.7 MB / 398.1 MB Notification: Performance of preOpt evalFunc (simulation): time 3.816e-05/0.3559, allocations: 13.44 kB / 0.5222 GB, free: 11.69 MB / 398.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.000654/0.3566, allocations: 300.6 kB / 0.5224 GB, free: 11.54 MB / 398.1 MB Notification: Performance of pre-optimization done (n=41): time 4.789e-06/0.3566, allocations: 0 / 0.5224 GB, free: 11.54 MB / 398.1 MB Notification: Performance of matching and sorting (n=41): time 0.001937/0.3585, allocations: 0.7607 MB / 0.5232 GB, free: 11.18 MB / 398.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 9.357e-05/0.3586, allocations: 134.8 kB / 0.5233 GB, free: 11.02 MB / 398.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0007689/0.3594, allocations: 0.4939 MB / 0.5238 GB, free: 10.79 MB / 398.1 MB Notification: Performance of collectPreVariables (initialization): time 5.274e-05/0.3595, allocations: 32.45 kB / 0.5238 GB, free: 10.75 MB / 398.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0002784/0.3597, allocations: 308.1 kB / 0.5241 GB, free: 10.51 MB / 398.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0001515/0.3599, allocations: 153 kB / 0.5243 GB, free: 10.39 MB / 398.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001573/0.3601, allocations: 89.84 kB / 0.5244 GB, free: 10.34 MB / 398.1 MB Notification: Performance of setup shared object (initialization): time 0.0002029/0.3603, allocations: 365.9 kB / 0.5247 GB, free: 10 MB / 398.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004838/0.3608, allocations: 198.7 kB / 0.5249 GB, free: 9.93 MB / 398.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005921/0.3614, allocations: 309.9 kB / 0.5252 GB, free: 9.727 MB / 398.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.001053/0.3624, allocations: 0.5153 MB / 0.5257 GB, free: 9.414 MB / 398.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.677e-06/0.3624, allocations: 1.156 kB / 0.5257 GB, free: 9.414 MB / 398.1 MB Notification: Performance of matching and sorting (n=59) (initialization): time 0.001856/0.3643, allocations: 0.7792 MB / 0.5265 GB, free: 9.086 MB / 398.1 MB Notification: Performance of prepare postOptimizeDAE: time 4e-05/0.3644, allocations: 37.52 kB / 0.5265 GB, free: 9.051 MB / 398.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.586e-06/0.3644, allocations: 4.125 kB / 0.5265 GB, free: 9.051 MB / 398.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004783/0.3649, allocations: 142.1 kB / 0.5266 GB, free: 9.004 MB / 398.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003755/0.3652, allocations: 87.31 kB / 0.5267 GB, free: 8.996 MB / 398.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003696/0.3689, allocations: 2.652 MB / 0.5293 GB, free: 6.914 MB / 398.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005652/0.3695, allocations: 84.25 kB / 0.5294 GB, free: 6.875 MB / 398.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.554e-05/0.3696, allocations: 18.47 kB / 0.5294 GB, free: 6.871 MB / 398.1 MB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0006837/0.3703, allocations: 333.6 kB / 0.5297 GB, free: 6.695 MB / 398.1 MB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0005452/0.3708, allocations: 297.1 kB / 0.53 GB, free: 6.496 MB / 398.1 MB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0009662/0.3718, allocations: 0.501 MB / 0.5305 GB, free: 6.18 MB / 398.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 5.27e-06/0.3718, allocations: 1.5 kB / 0.5305 GB, free: 6.18 MB / 398.1 MB Notification: Performance of matching and sorting (n=59) (initialization_lambda0): time 0.001497/0.3733, allocations: 0.6882 MB / 0.5312 GB, free: 5.871 MB / 398.1 MB Notification: Performance of prepare postOptimizeDAE: time 4.002e-05/0.3734, allocations: 37.44 kB / 0.5312 GB, free: 5.836 MB / 398.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.503e-06/0.3734, allocations: 4.125 kB / 0.5312 GB, free: 5.836 MB / 398.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0003893/0.3738, allocations: 126.9 kB / 0.5313 GB, free: 5.793 MB / 398.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003774/0.3742, allocations: 88.11 kB / 0.5314 GB, free: 5.785 MB / 398.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003051/0.3772, allocations: 2.463 MB / 0.5338 GB, free: 3.746 MB / 398.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005587/0.3778, allocations: 61.3 kB / 0.5339 GB, free: 3.723 MB / 398.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.106e-05/0.3779, allocations: 20.66 kB / 0.5339 GB, free: 3.719 MB / 398.1 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,trapezoid.count,$PRE.trapezoid.count,trapezoid.T_start,$PRE.trapezoid.T_start,$whenCondition1,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 0.0002648/0.3781, allocations: 214 kB / 0.5341 GB, free: 3.512 MB / 398.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001005/0.3782, allocations: 57.75 kB / 0.5342 GB, free: 3.48 MB / 398.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001333/0.3796, allocations: 0.5175 MB / 0.5347 GB, free: 3.25 MB / 398.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.182e-06/0.3796, allocations: 4.344 kB / 0.5347 GB, free: 3.25 MB / 398.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.049e-06/0.3796, allocations: 2.219 kB / 0.5347 GB, free: 3.25 MB / 398.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.784e-05/0.3796, allocations: 11.92 kB / 0.5347 GB, free: 3.238 MB / 398.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002153/0.3818, allocations: 1.164 MB / 0.5358 GB, free: 2.395 MB / 398.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.469e-06/0.3818, allocations: 1.469 kB / 0.5358 GB, free: 2.395 MB / 398.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004437/0.3823, allocations: 87.91 kB / 0.5359 GB, free: 2.371 MB / 398.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.0001077/0.3824, allocations: 30.59 kB / 0.5359 GB, free: 2.352 MB / 398.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.539e-05/0.3824, allocations: 7.219 kB / 0.5359 GB, free: 2.348 MB / 398.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001217/0.3836, allocations: 1.463 MB / 0.5374 GB, free: 0.8477 MB / 398.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.808e-06/0.3837, allocations: 5.156 kB / 0.5374 GB, free: 0.8438 MB / 398.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001775/0.3854, allocations: 0.8408 MB / 0.5382 GB, free: 344 kB / 398.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0002378/0.3857, allocations: 171.7 kB / 0.5384 GB, free: 176 kB / 398.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 8.507e-05/0.3858, allocations: 16.5 kB / 0.5384 GB, free: 164 kB / 398.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.00042/0.3862, allocations: 39.64 kB / 0.5384 GB, free: 144 kB / 398.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000111/0.3863, allocations: 35.42 kB / 0.5384 GB, free: 124 kB / 398.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.18e-05/0.3864, allocations: 13.27 kB / 0.5385 GB, free: 120 kB / 398.1 MB Notification: Performance of sorting global known variables: time 0.0005818/0.387, allocations: 357 kB / 0.5388 GB, free: 15.91 MB / 414.1 MB Notification: Performance of sort global known variables: time 1.41e-07/0.387, allocations: 0 / 0.5388 GB, free: 15.91 MB / 414.1 MB Notification: Performance of remove unused functions: time 0.0009933/0.388, allocations: 256.6 kB / 0.539 GB, free: 15.84 MB / 414.1 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 0.00208/0.3901, allocations: 1.399 MB / 0.5404 GB, free: 14.79 MB / 414.1 MB Notification: Performance of simCode: created initialization part: time 0.002272/0.3923, allocations: 1.148 MB / 0.5415 GB, free: 14.02 MB / 414.1 MB Notification: Performance of simCode: created event and clocks part: time 3.416e-06/0.3924, allocations: 1.25 kB / 0.5415 GB, free: 14.02 MB / 414.1 MB Notification: Performance of simCode: created simulation system equations: time 0.000659/0.393, allocations: 349.5 kB / 0.5419 GB, free: 13.79 MB / 414.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0007177/0.3937, allocations: 124.5 kB / 0.542 GB, free: 13.72 MB / 414.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.009787/0.4035, allocations: 5.44 MB / 0.5473 GB, free: 10.11 MB / 414.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006481/0.4042, allocations: 0.8994 MB / 0.5482 GB, free: 9.316 MB / 414.1 MB Notification: Performance of simCode: alias equations: time 0.0003927/0.4046, allocations: 108.6 kB / 0.5483 GB, free: 9.266 MB / 414.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003348/0.405, allocations: 194 kB / 0.5485 GB, free: 9.102 MB / 414.1 MB Notification: Performance of SimCode: time 8.22e-07/0.405, allocations: 0 / 0.5485 GB, free: 9.102 MB / 414.1 MB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.04667/0.4517, allocations: 13.89 MB / 0.562 GB, free: 11.52 MB / 430.1 MB Notification: Performance of buildModelFMU: Generate platform static: time 12.76/13.21, allocations: 3.797 kB / 0.562 GB, free: 11.52 MB / 430.1 MB (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 & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_PowerSystems_PowerSystems_Examples_PowerWorld_Test_HydroPlantTest1_fmu --startTime=0 --stopTime=900 --timeout=50 --tolerance=1e-06 PowerSystems_PowerSystems_Examples_PowerWorld_Test_HydroPlantTest1.fmu > PowerSystems_PowerSystems.Examples.PowerWorld.Test.HydroPlantTest1.pipe 2>&1)