Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Modelica_3.2.2_Modelica.Fluid.Examples.AST_BatchPlant.Test.TanksWithEmptyingPipe1.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 3.2.3+maint.om/package.mo", uses=false) Using package Modelica with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+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(Modelica.Fluid.Examples.AST_BatchPlant.Test.TanksWithEmptyingPipe1,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Modelica_3.2.2_Modelica.Fluid.Examples.AST_BatchPlant.Test.TanksWithEmptyingPipe1") translateModel(Modelica.Fluid.Examples.AST_BatchPlant.Test.TanksWithEmptyingPipe1,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Modelica_3.2.2_Modelica.Fluid.Examples.AST_BatchPlant.Test.TanksWithEmptyingPipe1") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001023/0.001023, allocations: 101 kB / 16.5 MB, free: 6.641 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001039/0.001039, allocations: 195.1 kB / 17.42 MB, free: 6.066 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.368/1.368, allocations: 205.1 MB / 223.3 MB, free: 12.48 MB / 190.1 MB Notification: Modelica requested package Complex of version 3.2.3. Complex 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Modelica requested package ModelicaServices of version 3.2.3. ModelicaServices 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.00131/0.00131, allocations: 47.92 kB / 279.3 MB, free: 3.598 MB / 222.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.09061/0.09194, allocations: 46.63 MB / 326 MB, free: 4.895 MB / 270.1 MB Notification: Performance of NFInst.instantiate(Modelica.Fluid.Examples.AST_BatchPlant.Test.TanksWithEmptyingPipe1): time 0.03091/0.1229, allocations: 32.28 MB / 358.2 MB, free: 4.492 MB / 302.1 MB Notification: Performance of NFInst.instExpressions: time 0.01994/0.1429, allocations: 14.94 MB / 373.2 MB, free: 5.512 MB / 318.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.002412/0.1454, allocations: 59.56 kB / 373.2 MB, free: 5.453 MB / 318.1 MB Notification: Performance of NFTyping.typeComponents: time 0.001686/0.1471, allocations: 0.4972 MB / 373.7 MB, free: 4.953 MB / 318.1 MB Notification: Performance of NFTyping.typeBindings: time 0.005131/0.1523, allocations: 2.046 MB / 375.8 MB, free: 2.898 MB / 318.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.2054/0.3576, allocations: 3.133 MB / 378.9 MB, free: 12.02 MB / 318.1 MB Notification: Performance of NFFlatten.flatten: time 0.009171/0.3668, allocations: 5.918 MB / 384.8 MB, free: 12.02 MB / 318.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.002284/0.3692, allocations: 0.8675 MB / 385.7 MB, free: 11.98 MB / 318.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.004543/0.3737, allocations: 1.273 MB / 387 MB, free: 11.98 MB / 318.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.003695/0.3774, allocations: 1.531 MB / 388.5 MB, free: 11.87 MB / 318.1 MB Notification: Performance of NFPackage.collectConstants: time 0.0003946/0.3779, allocations: 76.34 kB / 388.6 MB, free: 11.87 MB / 318.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.005245/0.3831, allocations: 2.257 MB / 390.8 MB, free: 11.87 MB / 318.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0008967/0.384, allocations: 0.4893 MB / 391.3 MB, free: 11.82 MB / 318.1 MB Notification: Performance of NFVerifyModel.verify: time 0.001851/0.3859, allocations: 0.753 MB / 392.1 MB, free: 11.6 MB / 318.1 MB Notification: Performance of NFConvertDAE.convert: time 0.008206/0.3941, allocations: 3.521 MB / 395.6 MB, free: 11.31 MB / 318.1 MB Notification: Performance of FrontEnd - DAE generated: time 7.143e-06/0.3942, allocations: 0 / 395.6 MB, free: 11.31 MB / 318.1 MB Notification: Performance of FrontEnd: time 2.414e-06/0.3942, allocations: 0 / 395.6 MB, free: 11.31 MB / 318.1 MB Notification: Performance of Transformations before backend: time 6.051e-05/0.3943, allocations: 0 / 395.6 MB, free: 11.31 MB / 318.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 256 * Number of variables: 256 Notification: Performance of Generate backend data structure: time 0.005433/0.3997, allocations: 2.104 MB / 397.7 MB, free: 10.25 MB / 318.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.463e-05/0.3998, allocations: 9.406 kB / 397.7 MB, free: 10.25 MB / 318.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0006455/0.4004, allocations: 174.2 kB / 397.9 MB, free: 10.17 MB / 318.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001441/0.4019, allocations: 0.945 MB / 398.8 MB, free: 9.773 MB / 318.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 6.586e-05/0.4019, allocations: 79.53 kB / 398.9 MB, free: 9.77 MB / 318.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.000156/0.4021, allocations: 96.45 kB / 399 MB, free: 9.766 MB / 318.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002572/0.4047, allocations: 1.638 MB / 400.6 MB, free: 9.215 MB / 318.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 3.431e-05/0.4047, allocations: 5 kB / 400.6 MB, free: 9.215 MB / 318.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001445/0.4049, allocations: 48.12 kB / 400.7 MB, free: 9.211 MB / 318.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001276/0.405, allocations: 102.1 kB / 400.8 MB, free: 9.195 MB / 318.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002445/0.4075, allocations: 1.645 MB / 402.4 MB, free: 8.918 MB / 318.1 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 0.009143/0.4166, allocations: 6.637 MB / 409.1 MB, free: 4.719 MB / 318.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.001332/0.418, allocations: 0.9311 MB / 410 MB, free: 4.562 MB / 318.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0007074/0.4187, allocations: 0.5537 MB / 410.6 MB, free: 4.48 MB / 318.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.00326/0.422, allocations: 2.817 MB / 413.4 MB, free: 2.547 MB / 318.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.573e-05/0.422, allocations: 48.94 kB / 413.4 MB, free: 2.508 MB / 318.1 MB Notification: Performance of pre-optimization done (n=80): time 3.467e-06/0.422, allocations: 2.781 kB / 413.4 MB, free: 2.508 MB / 318.1 MB Notification: Performance of matching and sorting (n=90): time 0.008459/0.4305, allocations: 3.698 MB / 417.1 MB, free: 15.36 MB / 334.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001053/0.4306, allocations: 195.8 kB / 417.3 MB, free: 15.12 MB / 334.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001928/0.4326, allocations: 1.306 MB / 418.6 MB, free: 13.8 MB / 334.1 MB Notification: Performance of collectPreVariables (initialization): time 0.0001278/0.4327, allocations: 45.7 kB / 418.7 MB, free: 13.75 MB / 334.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0005049/0.4332, allocations: 0.6596 MB / 419.3 MB, free: 13.09 MB / 334.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0002716/0.4335, allocations: 316.8 kB / 419.6 MB, free: 12.78 MB / 334.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004442/0.434, allocations: 287.3 kB / 419.9 MB, free: 12.5 MB / 334.1 MB Notification: Performance of setup shared object (initialization): time 0.0001071/0.4341, allocations: 301.1 kB / 420.2 MB, free: 12.2 MB / 334.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0009819/0.4351, allocations: 0.5864 MB / 420.8 MB, free: 11.61 MB / 334.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001286/0.4364, allocations: 1.004 MB / 421.8 MB, free: 10.44 MB / 334.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.002095/0.4385, allocations: 1.484 MB / 423.3 MB, free: 8.848 MB / 334.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.272e-06/0.4385, allocations: 0 / 423.3 MB, free: 8.848 MB / 334.1 MB Notification: Performance of matching and sorting (n=180) (initialization): time 0.003337/0.4418, allocations: 1.904 MB / 425.2 MB, free: 7.012 MB / 334.1 MB Notification: Performance of prepare postOptimizeDAE: time 3.183e-05/0.4419, allocations: 12 kB / 425.2 MB, free: 7 MB / 334.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.03e-05/0.4419, allocations: 12 kB / 425.2 MB, free: 6.988 MB / 334.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.004998/0.4469, allocations: 0.7611 MB / 426 MB, free: 6.223 MB / 334.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001154/0.4481, allocations: 289.3 kB / 426.3 MB, free: 5.961 MB / 334.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002102/0.4502, allocations: 2.169 MB / 428.4 MB, free: 3.727 MB / 334.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001526/0.4517, allocations: 87.95 kB / 428.5 MB, free: 3.645 MB / 334.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001294/0.4519, allocations: 63.98 kB / 428.6 MB, free: 3.582 MB / 334.1 MB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001455/0.4533, allocations: 0.8473 MB / 429.4 MB, free: 2.73 MB / 334.1 MB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001241/0.4546, allocations: 0.9944 MB / 430.4 MB, free: 1.555 MB / 334.1 MB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001929/0.4565, allocations: 1.456 MB / 431.9 MB, free: 15.98 MB / 350.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.087e-05/0.4566, allocations: 11.94 kB / 431.9 MB, free: 15.97 MB / 350.1 MB Notification: Performance of matching and sorting (n=180) (initialization_lambda0): time 0.003187/0.4598, allocations: 1.831 MB / 433.7 MB, free: 14.19 MB / 350.1 MB Notification: Performance of prepare postOptimizeDAE: time 2.124e-05/0.4598, allocations: 15.94 kB / 433.7 MB, free: 14.18 MB / 350.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.733e-05/0.4598, allocations: 12 kB / 433.7 MB, free: 14.16 MB / 350.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.004184/0.464, allocations: 0.5913 MB / 434.3 MB, free: 13.57 MB / 350.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001175/0.4652, allocations: 287.1 kB / 434.6 MB, free: 13.3 MB / 350.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.00181/0.467, allocations: 2.023 MB / 436.6 MB, free: 11.21 MB / 350.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001612/0.4687, allocations: 96.06 kB / 436.7 MB, free: 11.12 MB / 350.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002149/0.4689, allocations: 63.98 kB / 436.8 MB, free: 11.06 MB / 350.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 53 * Number of states: 0 () * Number of discrete variables: 12 (tank2.aboveLevel[2],$PRE.tank2.aboveLevel[2],tank2.aboveLevel[1],$PRE.tank2.aboveLevel[1],tank1.aboveLevel[2],$PRE.tank1.aboveLevel[2],tank1.aboveLevel[1],$PRE.tank1.aboveLevel[1],tank2.ports_m_flow_out[2],tank2.ports_m_flow_out[1],tank1.ports_m_flow_out[2],tank1.ports_m_flow_out[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (166): * Single equations (assignments): 163 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 3 * 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): 3 systems {(1,3), (2,7), (1,3)} Notification: Performance of prepare postOptimizeDAE: time 0.0006223/0.4695, allocations: 283.2 kB / 437.1 MB, free: 10.79 MB / 350.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0006409/0.4702, allocations: 142.3 kB / 437.2 MB, free: 10.65 MB / 350.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003442/0.4736, allocations: 1.528 MB / 438.7 MB, free: 9.125 MB / 350.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 9.087e-06/0.4736, allocations: 8 kB / 438.7 MB, free: 9.117 MB / 350.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.634e-06/0.4737, allocations: 4 kB / 438.7 MB, free: 9.113 MB / 350.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.173e-05/0.4737, allocations: 3.984 kB / 438.7 MB, free: 9.109 MB / 350.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.005217/0.4789, allocations: 2.804 MB / 441.6 MB, free: 6.258 MB / 350.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.334e-06/0.4789, allocations: 0 / 441.6 MB, free: 6.258 MB / 350.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000774/0.4797, allocations: 160.2 kB / 441.7 MB, free: 6.109 MB / 350.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.003135/0.4829, allocations: 0.6042 MB / 442.3 MB, free: 5.496 MB / 350.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001057/0.483, allocations: 24.73 kB / 442.3 MB, free: 5.473 MB / 350.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001943/0.4849, allocations: 2.11 MB / 444.4 MB, free: 3.297 MB / 350.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.892e-06/0.485, allocations: 4.031 kB / 444.5 MB, free: 3.293 MB / 350.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003641/0.4886, allocations: 2.095 MB / 446.5 MB, free: 1.16 MB / 350.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0007146/0.4893, allocations: 219.3 kB / 446.8 MB, free: 0.9258 MB / 350.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0004037/0.4897, allocations: 28.88 kB / 446.8 MB, free: 0.8984 MB / 350.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001117/0.4909, allocations: 63.84 kB / 446.9 MB, free: 0.8359 MB / 350.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002402/0.4911, allocations: 97.78 kB / 446.9 MB, free: 0.7422 MB / 350.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.000122/0.4913, allocations: 43.97 kB / 447 MB, free: 0.6992 MB / 350.1 MB Notification: Performance of sorting global known variables: time 0.001532/0.4928, allocations: 0.9051 MB / 447.9 MB, free: 15.79 MB / 366.1 MB Notification: Performance of sort global known variables: time 2.91e-07/0.4928, allocations: 0 / 447.9 MB, free: 15.79 MB / 366.1 MB Notification: Performance of remove unused functions: time 0.00398/0.4968, allocations: 1.117 MB / 449 MB, free: 14.68 MB / 366.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * Number of states: 4 (tank1.level,tank1.medium.T,tank2.level,tank2.medium.T) * Number of discrete variables: 4 (tank1.aboveLevel[1],tank1.aboveLevel[2],tank2.aboveLevel[1],tank2.aboveLevel[2]) * Number of discrete states: 4 (tank1.aboveLevel[1],tank1.aboveLevel[2],tank2.aboveLevel[1],tank2.aboveLevel[2]) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (84): * Single equations (assignments): 81 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 3 * 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): 3 systems {(2,12), (1,6), (1,6)} Notification: Performance of Backend phase and start with SimCode phase: time 0.003199/0.5, allocations: 0.8296 MB / 449.8 MB, free: 13.9 MB / 366.1 MB Notification: Performance of simCode: created initialization part: time 0.005127/0.5051, allocations: 2.267 MB / 452.1 MB, free: 11.73 MB / 366.1 MB Notification: Performance of simCode: created event and clocks part: time 9.458e-06/0.5052, allocations: 1.188 kB / 452.1 MB, free: 11.73 MB / 366.1 MB Notification: Performance of simCode: created simulation system equations: time 0.001539/0.5067, allocations: 0.6907 MB / 452.8 MB, free: 11.06 MB / 366.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003385/0.5101, allocations: 0.5979 MB / 453.4 MB, free: 10.47 MB / 366.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.005709/0.5159, allocations: 3.181 MB / 456.6 MB, free: 7.27 MB / 366.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0008887/0.5168, allocations: 1.263 MB / 457.8 MB, free: 5.98 MB / 366.1 MB Notification: Performance of simCode: alias equations: time 0.002196/0.519, allocations: 0.5744 MB / 458.4 MB, free: 5.398 MB / 366.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003474/0.5193, allocations: 115.4 kB / 458.5 MB, free: 5.285 MB / 366.1 MB Notification: Performance of SimCode: time 7.51e-07/0.5194, allocations: 0 / 458.5 MB, free: 5.285 MB / 366.1 MB Notification: Performance of Templates: time 0.05992/0.5793, allocations: 38.16 MB / 496.7 MB, free: 15.25 MB / 414.1 MB make -j1 -f Modelica_3.2.2_Modelica.Fluid.Examples.AST_BatchPlant.Test.TanksWithEmptyingPipe1.makefile (rm -f Modelica_3.2.2_Modelica.Fluid.Examples.AST_BatchPlant.Test.TanksWithEmptyingPipe1.pipe ; mkfifo Modelica_3.2.2_Modelica.Fluid.Examples.AST_BatchPlant.Test.TanksWithEmptyingPipe1.pipe ; head -c 1048576 < Modelica_3.2.2_Modelica.Fluid.Examples.AST_BatchPlant.Test.TanksWithEmptyingPipe1.pipe >> ../files/Modelica_3.2.2_Modelica.Fluid.Examples.AST_BatchPlant.Test.TanksWithEmptyingPipe1.sim & ./Modelica_3.2.2_Modelica.Fluid.Examples.AST_BatchPlant.Test.TanksWithEmptyingPipe1 -abortSlowSimulation -alarm=480 -lv LOG_STATS > Modelica_3.2.2_Modelica.Fluid.Examples.AST_BatchPlant.Test.TanksWithEmptyingPipe1.pipe 2>&1)