Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr OpenIPSL_OpenIPSL.Tests.Controls.PSSE.ES.EXST1.conf.json 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/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.0.1/package.mo", uses=false) Using package OpenIPSL with version 3.0.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.0.1/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) 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) Running command: translateModel(OpenIPSL.Tests.Controls.PSSE.ES.EXST1,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="OpenIPSL_OpenIPSL.Tests.Controls.PSSE.ES.EXST1") translateModel(OpenIPSL.Tests.Controls.PSSE.ES.EXST1,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="OpenIPSL_OpenIPSL.Tests.Controls.PSSE.ES.EXST1") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001176/0.001176, allocations: 182.4 kB / 15.98 MB, free: 5.766 MB / 13.93 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.219/1.219, allocations: 222.9 MB / 239.7 MB, free: 10.99 MB / 202.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0009483/0.0009482, allocations: 114.5 kB / 289.9 MB, free: 10.92 MB / 234.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.0.1/package.mo): time 0.4086/0.4086, allocations: 78.51 MB / 418.5 MB, free: 8.547 MB / 298.7 MB Notification: Performance of FrontEnd - loaded program: time 0.001176/0.001176, allocations: 72.12 kB / 497.5 MB, free: 10.29 MB / 378.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2415/0.2427, allocations: 68.17 MB / 0.5524 GB, free: 19.89 MB / 378.7 MB Notification: Performance of NFInst.instantiate(OpenIPSL.Tests.Controls.PSSE.ES.EXST1): time 0.006098/0.2488, allocations: 8.672 MB / 0.5609 GB, free: 11.16 MB / 378.7 MB Notification: Performance of NFInst.instExpressions: time 0.004268/0.2531, allocations: 2.697 MB / 0.5635 GB, free: 8.465 MB / 378.7 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0007904/0.2539, allocations: 16 kB / 0.5635 GB, free: 8.449 MB / 378.7 MB Notification: Performance of NFTyping.typeComponents: time 0.0006188/0.2546, allocations: 254.4 kB / 0.5638 GB, free: 8.199 MB / 378.7 MB Notification: Performance of NFTyping.typeBindings: time 0.00208/0.2567, allocations: 1.095 MB / 0.5649 GB, free: 7.105 MB / 378.7 MB Notification: Performance of NFTyping.typeClassSections: time 0.001136/0.2578, allocations: 0.6857 MB / 0.5655 GB, free: 6.426 MB / 378.7 MB Notification: Performance of NFFlatten.flatten: time 0.001474/0.2593, allocations: 2.323 MB / 0.5678 GB, free: 4.094 MB / 378.7 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0004002/0.2597, allocations: 377.8 kB / 0.5681 GB, free: 3.703 MB / 378.7 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0006857/0.2604, allocations: 0.8362 MB / 0.569 GB, free: 2.863 MB / 378.7 MB Notification: Performance of NFSimplifyModel.simplify: time 0.000788/0.2612, allocations: 1.085 MB / 0.57 GB, free: 1.773 MB / 378.7 MB Notification: Performance of NFPackage.collectConstants: time 0.0001883/0.2614, allocations: 108 kB / 0.5701 GB, free: 1.668 MB / 378.7 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0004775/0.2619, allocations: 279.8 kB / 0.5704 GB, free: 1.395 MB / 378.7 MB Notification: Performance of NFScalarize.scalarize: time 0.0002354/0.2621, allocations: 406.1 kB / 0.5708 GB, free: 0.9961 MB / 378.7 MB Notification: Performance of NFVerifyModel.verify: time 0.0004766/0.2626, allocations: 0.8465 MB / 0.5716 GB, free: 148 kB / 378.7 MB Notification: Performance of NFConvertDAE.convert: time 0.001806/0.2644, allocations: 2.246 MB / 0.5738 GB, free: 13.89 MB / 394.7 MB Notification: Performance of FrontEnd - DAE generated: time 2.835e-06/0.2644, allocations: 0 / 0.5738 GB, free: 13.89 MB / 394.7 MB Notification: Performance of FrontEnd: time 7.32e-07/0.2644, allocations: 4 kB / 0.5738 GB, free: 13.89 MB / 394.7 MB Notification: Performance of Transformations before backend: time 2.103e-05/0.2645, allocations: 3.938 kB / 0.5738 GB, free: 13.88 MB / 394.7 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 249 * Number of variables: 249 Notification: Performance of Generate backend data structure: time 0.01396/0.2784, allocations: 3.933 MB / 0.5777 GB, free: 9.891 MB / 394.7 MB Notification: Performance of prepare preOptimizeDAE: time 3.562e-05/0.2785, allocations: 12.03 kB / 0.5777 GB, free: 9.879 MB / 394.7 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004305/0.2828, allocations: 0.7549 MB / 0.5784 GB, free: 9.121 MB / 394.7 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001971/0.2848, allocations: 1.148 MB / 0.5795 GB, free: 7.922 MB / 394.7 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0005514/0.2854, allocations: 500 kB / 0.58 GB, free: 7.352 MB / 394.7 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002107/0.2856, allocations: 115.9 kB / 0.5801 GB, free: 7.238 MB / 394.7 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.003092/0.2887, allocations: 1.482 MB / 0.5816 GB, free: 5.738 MB / 394.7 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.858e-05/0.2887, allocations: 0 / 0.5816 GB, free: 5.738 MB / 394.7 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001092/0.2888, allocations: 44 kB / 0.5816 GB, free: 5.695 MB / 394.7 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.998e-05/0.2889, allocations: 28 kB / 0.5816 GB, free: 5.668 MB / 394.7 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0033/0.2922, allocations: 1.444 MB / 0.583 GB, free: 4.223 MB / 394.7 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 0.008764/0.3009, allocations: 4.962 MB / 0.5879 GB, free: 15.05 MB / 410.7 MB Notification: Performance of preOpt comSubExp (simulation): time 0.008511/0.3095, allocations: 3.005 MB / 0.5908 GB, free: 11.91 MB / 410.7 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.002102/0.3116, allocations: 0.9698 MB / 0.5918 GB, free: 10.93 MB / 410.7 MB Notification: Performance of preOpt evalFunc (simulation): time 0.000143/0.3117, allocations: 28.91 kB / 0.5918 GB, free: 10.9 MB / 410.7 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.049e-05/0.3118, allocations: 55.5 kB / 0.5918 GB, free: 10.84 MB / 410.7 MB Notification: Performance of pre-optimization done (n=128): time 4.298e-06/0.3118, allocations: 3.984 kB / 0.5918 GB, free: 10.84 MB / 410.7 MB Notification: Performance of matching and sorting (n=128): time 0.04013/0.3519, allocations: 9.998 MB / 0.6016 GB, free: 0.7773 MB / 410.7 MB Notification: Performance of inlineWhenForInitialization (initialization): time 7.459e-05/0.352, allocations: 149.5 kB / 0.6018 GB, free: 0.6016 MB / 410.7 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002088/0.3541, allocations: 1.436 MB / 0.6032 GB, free: 15.16 MB / 426.7 MB Notification: Performance of collectPreVariables (initialization): time 0.0002503/0.3544, allocations: 53.7 kB / 0.6032 GB, free: 15.1 MB / 426.7 MB Notification: Performance of collectInitialEqns (initialization): time 0.0004275/0.3548, allocations: 0.6121 MB / 0.6038 GB, free: 14.48 MB / 426.7 MB Notification: Performance of collectInitialBindings (initialization): time 0.0004395/0.3553, allocations: 469.3 kB / 0.6043 GB, free: 14.02 MB / 426.7 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0006104/0.3559, allocations: 347.4 kB / 0.6046 GB, free: 13.67 MB / 426.7 MB Notification: Performance of setup shared object (initialization): time 8.281e-05/0.356, allocations: 305.1 kB / 0.6049 GB, free: 13.37 MB / 426.7 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002303/0.3583, allocations: 1.039 MB / 0.6059 GB, free: 12.33 MB / 426.7 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002451/0.3608, allocations: 1.245 MB / 0.6071 GB, free: 11.03 MB / 426.7 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.00454/0.3653, allocations: 2.191 MB / 0.6092 GB, free: 8.801 MB / 426.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.65e-06/0.3653, allocations: 0 / 0.6092 GB, free: 8.801 MB / 426.7 MB Notification: Performance of matching and sorting (n=244) (initialization): time 0.009983/0.3753, allocations: 3.91 MB / 0.6131 GB, free: 4.879 MB / 426.7 MB Notification: Performance of prepare postOptimizeDAE: time 1.993e-05/0.3754, allocations: 8 kB / 0.6131 GB, free: 4.871 MB / 426.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.189e-05/0.3754, allocations: 3.984 kB / 0.6131 GB, free: 4.867 MB / 426.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.01013/0.3855, allocations: 3.052 MB / 0.6161 GB, free: 1.812 MB / 426.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001333/0.3869, allocations: 295.5 kB / 0.6163 GB, free: 1.523 MB / 426.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.008081/0.395, allocations: 3.235 MB / 0.6195 GB, free: 14.26 MB / 442.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002325/0.3973, allocations: 258.3 kB / 0.6197 GB, free: 14 MB / 442.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001591/0.3975, allocations: 67.98 kB / 0.6198 GB, free: 13.94 MB / 442.7 MB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.002699/0.4002, allocations: 1.242 MB / 0.621 GB, free: 12.69 MB / 442.7 MB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.002393/0.4026, allocations: 1.226 MB / 0.6222 GB, free: 11.41 MB / 442.7 MB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.004441/0.407, allocations: 2.175 MB / 0.6243 GB, free: 9.199 MB / 442.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 6.653e-06/0.4071, allocations: 0 / 0.6243 GB, free: 9.199 MB / 442.7 MB Notification: Performance of matching and sorting (n=244) (initialization_lambda0): time 0.009879/0.417, allocations: 3.879 MB / 0.6281 GB, free: 5.309 MB / 442.7 MB Notification: Performance of prepare postOptimizeDAE: time 1.53e-05/0.417, allocations: 5.25 kB / 0.6281 GB, free: 5.305 MB / 442.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.606e-06/0.417, allocations: 4 kB / 0.6281 GB, free: 5.301 MB / 442.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.01011/0.4271, allocations: 3.052 MB / 0.6311 GB, free: 2.246 MB / 442.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001554/0.4287, allocations: 291.6 kB / 0.6314 GB, free: 1.961 MB / 442.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.008047/0.4368, allocations: 3.191 MB / 0.6345 GB, free: 14.74 MB / 458.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002248/0.4391, allocations: 242.5 kB / 0.6347 GB, free: 14.5 MB / 458.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001494/0.4392, allocations: 63.98 kB / 0.6348 GB, free: 14.44 MB / 458.7 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 15 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (171): * Single equations (assignments): 170 * Array equations: 0 * Algorithm blocks: 0 * 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 {(34,40)} Notification: Performance of prepare postOptimizeDAE: time 0.0003728/0.4396, allocations: 265 kB / 0.6351 GB, free: 14.18 MB / 458.7 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003158/0.4399, allocations: 165.9 kB / 0.6352 GB, free: 14.01 MB / 458.7 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01639/0.4563, allocations: 4.988 MB / 0.6401 GB, free: 8.992 MB / 458.7 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.488e-05/0.4564, allocations: 12 kB / 0.6401 GB, free: 8.98 MB / 458.7 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 8.305e-06/0.4564, allocations: 7.984 kB / 0.6401 GB, free: 8.973 MB / 458.7 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.902e-05/0.4564, allocations: 3.984 kB / 0.6401 GB, free: 8.969 MB / 458.7 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 postOpt removeSimpleEquations (simulation): time 0.01991/0.4763, allocations: 7.263 MB / 0.6472 GB, free: 1.562 MB / 458.7 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.303e-05/0.4764, allocations: 0 / 0.6472 GB, free: 1.562 MB / 458.7 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002533/0.4789, allocations: 451.5 kB / 0.6476 GB, free: 1.121 MB / 458.7 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.00776/0.4867, allocations: 2.248 MB / 0.6498 GB, free: 14.87 MB / 474.7 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0002099/0.4869, allocations: 24 kB / 0.6498 GB, free: 14.84 MB / 474.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.02901/0.5159, allocations: 12.84 MB / 0.6624 GB, free: 1.598 MB / 474.7 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.798e-06/0.516, allocations: 3.938 kB / 0.6624 GB, free: 1.594 MB / 474.7 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.3208/0.8368, allocations: 43.87 MB / 0.7052 GB, free: 103.5 MB / 490.7 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0002574/0.8371, allocations: 283.6 kB / 0.7055 GB, free: 103.3 MB / 490.7 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000183/0.8373, allocations: 24 kB / 0.7055 GB, free: 103.2 MB / 490.7 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001486/0.8388, allocations: 146 kB / 0.7057 GB, free: 103.1 MB / 490.7 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0006821/0.8395, allocations: 267.2 kB / 0.7059 GB, free: 102.9 MB / 490.7 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 8.801e-05/0.8396, allocations: 35.94 kB / 0.706 GB, free: 102.9 MB / 490.7 MB Notification: Performance of sorting global known variables: time 0.00108/0.8407, allocations: 0.9708 MB / 0.7069 GB, free: 101.9 MB / 490.7 MB Notification: Performance of sort global known variables: time 1.61e-07/0.8407, allocations: 0 / 0.7069 GB, free: 101.9 MB / 490.7 MB Notification: Performance of remove unused functions: time 0.002595/0.8433, allocations: 1.388 MB / 0.7083 GB, free: 100.6 MB / 490.7 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 13 (gENCLS.delta,gENCLS.eq,gENROE.w,gENROE.delta,gENROE.Epd,gENROE.Epq,gENROE.PSIkd,gENROE.PSIkq,eXST1.imLeadLag.TF.x_scaled[1],eXST1.Vm1.state,eXST1.imDerivativeLag.x,eXST1.TransducerDelay.state,gENCLS.omega) * 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 (79): * Single equations (assignments): 76 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 1 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 1 system {1} * Without analytic Jacobian (size): 0 systems 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): 2 systems {(1,6), (26,23)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0002249/0.8435, allocations: 147.7 kB / 0.7084 GB, free: 100.4 MB / 490.7 MB Notification: Performance of simCode: created initialization part: time 0.0148/0.8583, allocations: 5.302 MB / 0.7136 GB, free: 95.14 MB / 490.7 MB Notification: Performance of simCode: created event and clocks part: time 2.325e-06/0.8584, allocations: 7.25 kB / 0.7136 GB, free: 95.13 MB / 490.7 MB Notification: Performance of simCode: created simulation system equations: time 0.006935/0.8653, allocations: 2.366 MB / 0.7159 GB, free: 92.74 MB / 490.7 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0009094/0.8662, allocations: 151.1 kB / 0.716 GB, free: 92.59 MB / 490.7 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.008974/0.8752, allocations: 5.603 MB / 0.7215 GB, free: 86.95 MB / 490.7 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004563/0.8757, allocations: 1.299 MB / 0.7228 GB, free: 85.62 MB / 490.7 MB Notification: Performance of simCode: alias equations: time 0.0006749/0.8764, allocations: 182.1 kB / 0.723 GB, free: 85.44 MB / 490.7 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003322/0.8767, allocations: 99.41 kB / 0.723 GB, free: 85.34 MB / 490.7 MB Notification: Performance of SimCode: time 2.4e-07/0.8767, allocations: 0 / 0.723 GB, free: 85.34 MB / 490.7 MB Notification: Performance of Templates: time 0.04994/0.9266, allocations: 50.26 MB / 0.7721 GB, free: 35.14 MB / 490.7 MB make -j1 -f OpenIPSL_OpenIPSL.Tests.Controls.PSSE.ES.EXST1.makefile (rm -f OpenIPSL_OpenIPSL.Tests.Controls.PSSE.ES.EXST1.pipe ; mkfifo OpenIPSL_OpenIPSL.Tests.Controls.PSSE.ES.EXST1.pipe ; head -c 1048576 < OpenIPSL_OpenIPSL.Tests.Controls.PSSE.ES.EXST1.pipe >> ../files/OpenIPSL_OpenIPSL.Tests.Controls.PSSE.ES.EXST1.sim & ./OpenIPSL_OpenIPSL.Tests.Controls.PSSE.ES.EXST1 -abortSlowSimulation -alarm=480 -lv LOG_STATS > OpenIPSL_OpenIPSL.Tests.Controls.PSSE.ES.EXST1.pipe 2>&1)