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/ModelicaServices 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/Complex 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 Complex with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 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 ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 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/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0009845/0.0009845, allocations: 111.3 kB / 15.23 MB, free: 0.6602 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.229/1.229, allocations: 222.9 MB / 238.8 MB, free: 4.742 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00112/0.00112, allocations: 196.4 kB / 289.1 MB, free: 2.492 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.0.1/package.mo): time 0.4665/0.4665, allocations: 78.52 MB / 417.8 MB, free: 3.359 MB / 286.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001248/0.001249, allocations: 79.88 kB / 496.8 MB, free: 6.832 MB / 366.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1222/0.1235, allocations: 68.17 MB / 0.5517 GB, free: 2.605 MB / 430.1 MB Notification: Performance of NFInst.instantiate(OpenIPSL.Tests.Controls.PSSE.ES.EXST1): time 0.2403/0.3639, allocations: 8.664 MB / 0.5602 GB, free: 34.92 MB / 430.1 MB Notification: Performance of NFInst.instExpressions: time 0.005311/0.3692, allocations: 2.705 MB / 0.5628 GB, free: 34.22 MB / 430.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.001204/0.3704, allocations: 17.91 kB / 0.5628 GB, free: 34.22 MB / 430.1 MB Notification: Performance of NFTyping.typeComponents: time 0.0008826/0.3713, allocations: 255.1 kB / 0.5631 GB, free: 34.2 MB / 430.1 MB Notification: Performance of NFTyping.typeBindings: time 0.002618/0.374, allocations: 1.092 MB / 0.5641 GB, free: 33.97 MB / 430.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.00145/0.3755, allocations: 0.6941 MB / 0.5648 GB, free: 33.9 MB / 430.1 MB Notification: Performance of NFFlatten.flatten: time 0.002512/0.378, allocations: 2.29 MB / 0.567 GB, free: 33.55 MB / 430.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0005682/0.3786, allocations: 378.7 kB / 0.5674 GB, free: 33.47 MB / 430.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.001176/0.3798, allocations: 0.8214 MB / 0.5682 GB, free: 33.25 MB / 430.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0009383/0.3807, allocations: 1.093 MB / 0.5693 GB, free: 32.97 MB / 430.1 MB Notification: Performance of NFPackage.collectConstants: time 0.0002128/0.3809, allocations: 107.4 kB / 0.5694 GB, free: 32.97 MB / 430.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0005948/0.3815, allocations: 283.7 kB / 0.5696 GB, free: 32.95 MB / 430.1 MB Notification: Performance of NFScalarize.scalarize: time 0.00029/0.3818, allocations: 403.5 kB / 0.57 GB, free: 32.84 MB / 430.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0006183/0.3825, allocations: 0.8501 MB / 0.5709 GB, free: 32.52 MB / 430.1 MB Notification: Performance of NFConvertDAE.convert: time 0.001669/0.3841, allocations: 2.236 MB / 0.573 GB, free: 32.02 MB / 430.1 MB Notification: Performance of FrontEnd - DAE generated: time 5.581e-06/0.3841, allocations: 0 / 0.573 GB, free: 32.02 MB / 430.1 MB Notification: Performance of FrontEnd: time 7.91e-07/0.3842, allocations: 4.969 kB / 0.573 GB, free: 32.02 MB / 430.1 MB Notification: Performance of Transformations before backend: time 1.997e-05/0.3842, allocations: 0 / 0.573 GB, free: 32.02 MB / 430.1 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 0.01364/0.3978, allocations: 3.943 MB / 0.5769 GB, free: 30.89 MB / 430.1 MB Notification: Performance of prepare preOptimizeDAE: time 5.099e-05/0.3979, allocations: 8.625 kB / 0.5769 GB, free: 30.89 MB / 430.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004365/0.4023, allocations: 0.7535 MB / 0.5776 GB, free: 30.77 MB / 430.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001934/0.4042, allocations: 1.146 MB / 0.5788 GB, free: 30.29 MB / 430.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0004621/0.4047, allocations: 496.7 kB / 0.5792 GB, free: 29.88 MB / 430.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002005/0.4049, allocations: 114.9 kB / 0.5793 GB, free: 29.88 MB / 430.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002772/0.4077, allocations: 1.482 MB / 0.5808 GB, free: 29.34 MB / 430.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 2.239e-05/0.4077, allocations: 2.875 kB / 0.5808 GB, free: 29.34 MB / 430.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001204/0.4078, allocations: 39.94 kB / 0.5808 GB, free: 29.3 MB / 430.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.954e-05/0.4079, allocations: 24.69 kB / 0.5809 GB, free: 29.3 MB / 430.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003162/0.411, allocations: 1.445 MB / 0.5823 GB, free: 28.84 MB / 430.1 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 0.008264/0.4193, allocations: 4.97 MB / 0.5871 GB, free: 26.03 MB / 430.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.00808/0.4274, allocations: 3.001 MB / 0.5901 GB, free: 24.85 MB / 430.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.002169/0.4296, allocations: 0.9724 MB / 0.591 GB, free: 24.46 MB / 430.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0001566/0.4298, allocations: 24.16 kB / 0.591 GB, free: 24.46 MB / 430.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.766e-05/0.4298, allocations: 62.55 kB / 0.5911 GB, free: 24.39 MB / 430.1 MB Notification: Performance of pre-optimization done (n=128): time 3.056e-06/0.4299, allocations: 0 / 0.5911 GB, free: 24.39 MB / 430.1 MB Notification: Performance of matching and sorting (n=128): time 0.04285/0.4727, allocations: 9.991 MB / 0.6008 GB, free: 22.65 MB / 430.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 6.033e-05/0.4728, allocations: 142.7 kB / 0.601 GB, free: 22.49 MB / 430.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002296/0.4751, allocations: 1.45 MB / 0.6024 GB, free: 21.91 MB / 430.1 MB Notification: Performance of collectPreVariables (initialization): time 0.0003396/0.4755, allocations: 52.69 kB / 0.6024 GB, free: 21.86 MB / 430.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.000376/0.4758, allocations: 0.6105 MB / 0.603 GB, free: 21.38 MB / 430.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0004509/0.4763, allocations: 470.5 kB / 0.6035 GB, free: 21.01 MB / 430.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0006209/0.4769, allocations: 349.7 kB / 0.6038 GB, free: 20.85 MB / 430.1 MB Notification: Performance of setup shared object (initialization): time 4.317e-05/0.477, allocations: 302 kB / 0.6041 GB, free: 20.55 MB / 430.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002332/0.4793, allocations: 1.042 MB / 0.6051 GB, free: 20.14 MB / 430.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002356/0.4817, allocations: 1.243 MB / 0.6063 GB, free: 19.42 MB / 430.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.00438/0.4861, allocations: 2.195 MB / 0.6085 GB, free: 18.23 MB / 430.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 9.588e-06/0.4861, allocations: 5.062 kB / 0.6085 GB, free: 18.23 MB / 430.1 MB Notification: Performance of matching and sorting (n=244) (initialization): time 0.009984/0.4961, allocations: 3.907 MB / 0.6123 GB, free: 16.3 MB / 430.1 MB Notification: Performance of prepare postOptimizeDAE: time 2.614e-05/0.4962, allocations: 5.5 kB / 0.6123 GB, free: 16.3 MB / 430.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.65e-05/0.4962, allocations: 4.125 kB / 0.6123 GB, free: 16.3 MB / 430.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.009878/0.5061, allocations: 3.057 MB / 0.6153 GB, free: 14.1 MB / 430.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001552/0.5077, allocations: 292.2 kB / 0.6156 GB, free: 13.81 MB / 430.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.007138/0.5148, allocations: 3.232 MB / 0.6187 GB, free: 10.55 MB / 430.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002373/0.5172, allocations: 262.3 kB / 0.619 GB, free: 10.3 MB / 430.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000136/0.5173, allocations: 71.97 kB / 0.6191 GB, free: 10.23 MB / 430.1 MB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.002407/0.5198, allocations: 1.238 MB / 0.6203 GB, free: 8.984 MB / 430.1 MB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.002029/0.5218, allocations: 1.23 MB / 0.6215 GB, free: 7.703 MB / 430.1 MB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.003872/0.5257, allocations: 2.18 MB / 0.6236 GB, free: 5.484 MB / 430.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 6.502e-06/0.5257, allocations: 0 / 0.6236 GB, free: 5.484 MB / 430.1 MB Notification: Performance of matching and sorting (n=244) (initialization_lambda0): time 0.009048/0.5347, allocations: 3.872 MB / 0.6274 GB, free: 1.602 MB / 430.1 MB Notification: Performance of prepare postOptimizeDAE: time 1.805e-05/0.5348, allocations: 8 kB / 0.6274 GB, free: 1.594 MB / 430.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.133e-05/0.5348, allocations: 0 / 0.6274 GB, free: 1.594 MB / 430.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.009358/0.5442, allocations: 3.047 MB / 0.6304 GB, free: 14.54 MB / 446.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001447/0.5456, allocations: 293.7 kB / 0.6306 GB, free: 14.26 MB / 446.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.007617/0.5533, allocations: 3.195 MB / 0.6338 GB, free: 11.04 MB / 446.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002504/0.5558, allocations: 235.4 kB / 0.634 GB, free: 10.8 MB / 446.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002834/0.5561, allocations: 67.97 kB / 0.634 GB, free: 10.74 MB / 446.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 15 * Number of states: 0 () * Number of discrete variables: 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 0.0005333/0.5566, allocations: 267.8 kB / 0.6343 GB, free: 10.47 MB / 446.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0006441/0.5573, allocations: 161.9 kB / 0.6345 GB, free: 10.31 MB / 446.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01523/0.5725, allocations: 4.988 MB / 0.6393 GB, free: 5.289 MB / 446.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.77e-05/0.5726, allocations: 12.66 kB / 0.6393 GB, free: 5.277 MB / 446.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.064e-05/0.5726, allocations: 0.5 kB / 0.6393 GB, free: 5.277 MB / 446.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.021e-05/0.5726, allocations: 11.97 kB / 0.6394 GB, free: 5.266 MB / 446.1 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 postOpt removeSimpleEquations (simulation): time 0.01945/0.5921, allocations: 7.267 MB / 0.6464 GB, free: 13.86 MB / 462.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.265e-05/0.5921, allocations: 4.562 kB / 0.6465 GB, free: 13.85 MB / 462.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.00227/0.5944, allocations: 439.5 kB / 0.6469 GB, free: 13.42 MB / 462.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.007317/0.6017, allocations: 2.244 MB / 0.6491 GB, free: 11.18 MB / 462.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001799/0.6019, allocations: 31.98 kB / 0.6491 GB, free: 11.14 MB / 462.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.02768/0.6296, allocations: 12.83 MB / 0.6616 GB, free: 13.91 MB / 478.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.859e-06/0.6296, allocations: 0 / 0.6616 GB, free: 13.91 MB / 478.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01867/0.6483, allocations: 6.31 MB / 0.6678 GB, free: 7.57 MB / 478.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.000819/0.6492, allocations: 282.6 kB / 0.6681 GB, free: 7.273 MB / 478.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0005576/0.6498, allocations: 26 kB / 0.6681 GB, free: 7.25 MB / 478.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001981/0.6518, allocations: 143.8 kB / 0.6682 GB, free: 7.109 MB / 478.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0009515/0.6527, allocations: 269.8 kB / 0.6685 GB, free: 6.848 MB / 478.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001395/0.6529, allocations: 33.22 kB / 0.6685 GB, free: 6.816 MB / 478.1 MB Notification: Performance of sorting global known variables: time 0.001837/0.6547, allocations: 0.9708 MB / 0.6695 GB, free: 5.848 MB / 478.1 MB Notification: Performance of sort global known variables: time 2.81e-07/0.6547, allocations: 4 kB / 0.6695 GB, free: 5.844 MB / 478.1 MB Notification: Performance of remove unused functions: time 0.00325/0.658, allocations: 0.87 MB / 0.6703 GB, free: 4.973 MB / 478.1 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 0.0004124/0.6584, allocations: 144 kB / 0.6704 GB, free: 4.82 MB / 478.1 MB Notification: Performance of simCode: created initialization part: time 0.0176/0.676, allocations: 5.309 MB / 0.6756 GB, free: 15.52 MB / 494.1 MB Notification: Performance of simCode: created event and clocks part: time 7.995e-06/0.6761, allocations: 0 / 0.6756 GB, free: 15.52 MB / 494.1 MB Notification: Performance of simCode: created simulation system equations: time 0.008214/0.6843, allocations: 2.36 MB / 0.6779 GB, free: 13.14 MB / 494.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002878/0.6872, allocations: 146 kB / 0.6781 GB, free: 13 MB / 494.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.007873/0.6951, allocations: 3.75 MB / 0.6817 GB, free: 9.285 MB / 494.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001211/0.6964, allocations: 1.242 MB / 0.683 GB, free: 8.012 MB / 494.1 MB Notification: Performance of simCode: alias equations: time 0.001131/0.6975, allocations: 176.3 kB / 0.6831 GB, free: 7.844 MB / 494.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004854/0.698, allocations: 91.36 kB / 0.6832 GB, free: 7.754 MB / 494.1 MB Notification: Performance of SimCode: time 2.285e-06/0.698, allocations: 0 / 0.6832 GB, free: 7.754 MB / 494.1 MB Notification: Performance of Templates: time 0.05505/0.7531, allocations: 34.9 MB / 0.7173 GB, free: 4.992 MB / 0.5137 GB 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)