Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Fluid.Movers.Validation.SpeedControlled_y_linear.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/IBPSA 4.0.0-master/package.mo", uses=false) Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/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: translateModel(IBPSA.Fluid.Movers.Validation.SpeedControlled_y_linear,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.Movers.Validation.SpeedControlled_y_linear") translateModel(IBPSA.Fluid.Movers.Validation.SpeedControlled_y_linear,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.Movers.Validation.SpeedControlled_y_linear") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001254/0.001254, allocations: 106.2 kB / 16.52 MB, free: 6.656 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001264/0.001265, allocations: 195.2 kB / 17.44 MB, free: 6.047 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.346/1.346, allocations: 222.9 MB / 241.1 MB, free: 15.41 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo): time 0.7556/0.7556, allocations: 115.3 MB / 406.6 MB, free: 6.484 MB / 318.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001532/0.001532, allocations: 59.91 kB / 493.5 MB, free: 0.8711 MB / 398.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.4256/0.4271, allocations: 76.17 MB / 0.5564 GB, free: 36.21 MB / 446.1 MB Notification: Performance of NFInst.instantiate(IBPSA.Fluid.Movers.Validation.SpeedControlled_y_linear): time 0.05477/0.482, allocations: 58.15 MB / 0.6132 GB, free: 9.824 MB / 462.1 MB Notification: Performance of NFInst.instExpressions: time 0.03175/0.5138, allocations: 20.09 MB / 0.6328 GB, free: 6.332 MB / 478.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.005573/0.5194, allocations: 79.5 kB / 0.6328 GB, free: 6.254 MB / 478.1 MB Notification: Performance of NFTyping.typeComponents: time 0.01853/0.538, allocations: 9.81 MB / 0.6424 GB, free: 12.43 MB / 494.1 MB Notification: Performance of NFTyping.typeBindings: time 0.009103/0.5471, allocations: 2.649 MB / 0.645 GB, free: 9.77 MB / 494.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.005986/0.5531, allocations: 2.082 MB / 0.647 GB, free: 7.707 MB / 494.1 MB [/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/Compiler/NFFrontEnd/NFCeval.mo:1088:9-1088:67:writable] Error: Internal error NFCeval.evalBinaryMul failed to evaluate ‘{0.0, 0.001}[pressure.n] * 0.0‘ Notification: Performance of NFFlatten.flatten: time 0.02318/0.5763, allocations: 16.26 MB / 0.6629 GB, free: 7.414 MB / 0.4981 GB Notification: Performance of NFFlatten.resolveConnections: time 0.003431/0.5798, allocations: 1.52 MB / 0.6644 GB, free: 5.859 MB / 0.4981 GB Notification: Performance of NFEvalConstants.evaluate: time 0.004639/0.5844, allocations: 1.742 MB / 0.6661 GB, free: 4.109 MB / 0.4981 GB Notification: Performance of NFSimplifyModel.simplify: time 0.003168/0.5876, allocations: 1.559 MB / 0.6676 GB, free: 2.543 MB / 0.4981 GB Notification: Performance of NFPackage.collectConstants: time 0.0008969/0.5886, allocations: 107.9 kB / 0.6677 GB, free: 2.438 MB / 0.4981 GB Notification: Performance of NFFlatten.collectFunctions: time 0.005367/0.594, allocations: 2.241 MB / 0.6699 GB, free: 196 kB / 0.4981 GB Notification: Performance of NFScalarize.scalarize: time 0.00144/0.5954, allocations: 0.7903 MB / 0.6707 GB, free: 15.4 MB / 0.5137 GB Notification: Performance of NFVerifyModel.verify: time 0.002762/0.5982, allocations: 1.297 MB / 0.672 GB, free: 14.09 MB / 0.5137 GB Notification: Performance of NFConvertDAE.convert: time 0.005575/0.6038, allocations: 3.496 MB / 0.6754 GB, free: 10.59 MB / 0.5137 GB Notification: Performance of FrontEnd - DAE generated: time 5.561e-06/0.6039, allocations: 0 / 0.6754 GB, free: 10.59 MB / 0.5137 GB Notification: Performance of FrontEnd: time 1.873e-06/0.6039, allocations: 0 / 0.6754 GB, free: 10.59 MB / 0.5137 GB Notification: Performance of Transformations before backend: time 0.0001459/0.604, allocations: 0 / 0.6754 GB, free: 10.59 MB / 0.5137 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 266 * Number of variables: 266 Notification: Performance of Generate backend data structure: time 0.007396/0.6114, allocations: 3.23 MB / 0.6785 GB, free: 7.281 MB / 0.5137 GB Notification: Performance of prepare preOptimizeDAE: time 4.523e-05/0.6115, allocations: 8.031 kB / 0.6785 GB, free: 7.273 MB / 0.5137 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.005615/0.6171, allocations: 0.9409 MB / 0.6795 GB, free: 6.328 MB / 0.5137 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.008483/0.6256, allocations: 3.467 MB / 0.6828 GB, free: 2.793 MB / 0.5137 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001942/0.6259, allocations: 102.1 kB / 0.6829 GB, free: 2.691 MB / 0.5137 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0004403/0.6263, allocations: 116 kB / 0.6831 GB, free: 2.578 MB / 0.5137 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.003335/0.6297, allocations: 1.522 MB / 0.6845 GB, free: 0.9883 MB / 0.5137 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.428e-05/0.6297, allocations: 0 / 0.6845 GB, free: 0.9883 MB / 0.5137 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001209/0.6298, allocations: 48 kB / 0.6846 GB, free: 0.9414 MB / 0.5137 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.985e-05/0.6299, allocations: 28 kB / 0.6846 GB, free: 0.9141 MB / 0.5137 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003219/0.6331, allocations: 1.355 MB / 0.6859 GB, free: 15.55 MB / 0.5294 GB 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 0.01025/0.6434, allocations: 7.023 MB / 0.6928 GB, free: 8.09 MB / 0.5294 GB Notification: Performance of preOpt comSubExp (simulation): time 0.003096/0.6465, allocations: 1.128 MB / 0.6939 GB, free: 6.957 MB / 0.5294 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001222/0.6477, allocations: 0.5202 MB / 0.6944 GB, free: 6.434 MB / 0.5294 GB Notification: Performance of preOpt evalFunc (simulation): time 0.004369/0.6521, allocations: 3.039 MB / 0.6974 GB, free: 3.109 MB / 0.5294 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.081e-05/0.6522, allocations: 39.12 kB / 0.6974 GB, free: 3.062 MB / 0.5294 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.0007311/0.6529, allocations: 106.9 kB / 0.6975 GB, free: 2.957 MB / 0.5294 GB Notification: Performance of pre-optimization done (n=60): time 2.455e-06/0.6529, allocations: 0 / 0.6975 GB, free: 2.957 MB / 0.5294 GB Notification: Performance of matching and sorting (n=60): time 0.005025/0.658, allocations: 1.802 MB / 0.6993 GB, free: 1.129 MB / 0.5294 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.895e-05/0.658, allocations: 59.97 kB / 0.6993 GB, free: 1.055 MB / 0.5294 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.00364/0.6617, allocations: 2.608 MB / 0.7019 GB, free: 14.43 MB / 0.545 GB Notification: Performance of collectPreVariables (initialization): time 0.0002042/0.6619, allocations: 41.7 kB / 0.7019 GB, free: 14.38 MB / 0.545 GB Notification: Performance of collectInitialEqns (initialization): time 0.0008917/0.6628, allocations: 1.052 MB / 0.7029 GB, free: 13.32 MB / 0.545 GB Notification: Performance of collectInitialBindings (initialization): time 0.000244/0.663, allocations: 225 kB / 0.7032 GB, free: 13.1 MB / 0.545 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0006121/0.6637, allocations: 450.9 kB / 0.7036 GB, free: 12.65 MB / 0.545 GB Notification: Performance of setup shared object (initialization): time 9.683e-05/0.6638, allocations: 301.1 kB / 0.7039 GB, free: 12.36 MB / 0.545 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002003/0.6658, allocations: 1.168 MB / 0.705 GB, free: 11.18 MB / 0.545 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002379/0.6682, allocations: 1.578 MB / 0.7066 GB, free: 9.453 MB / 0.545 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.003888/0.6721, allocations: 2.508 MB / 0.709 GB, free: 6.836 MB / 0.545 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.07e-05/0.6721, allocations: 4 kB / 0.709 GB, free: 6.832 MB / 0.545 GB Notification: Performance of matching and sorting (n=236) (initialization): time 0.005482/0.6776, allocations: 3.084 MB / 0.712 GB, free: 3.73 MB / 0.545 GB Notification: Performance of prepare postOptimizeDAE: time 2.723e-05/0.6776, allocations: 11.94 kB / 0.712 GB, free: 3.719 MB / 0.545 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.103e-05/0.6777, allocations: 8 kB / 0.712 GB, free: 3.711 MB / 0.545 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004512/0.6781, allocations: 113.1 kB / 0.7121 GB, free: 3.598 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001417/0.6795, allocations: 347.5 kB / 0.7125 GB, free: 3.258 MB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0005146/0.6801, allocations: 0.6224 MB / 0.7131 GB, free: 2.609 MB / 0.545 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002146/0.6822, allocations: 157 kB / 0.7132 GB, free: 2.453 MB / 0.545 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001848/0.6824, allocations: 99.95 kB / 0.7133 GB, free: 2.355 MB / 0.545 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.002593/0.685, allocations: 1.527 MB / 0.7148 GB, free: 0.8242 MB / 0.545 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001985/0.687, allocations: 1.387 MB / 0.7162 GB, free: 15.28 MB / 0.5606 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.003193/0.6902, allocations: 2.129 MB / 0.7183 GB, free: 13.04 MB / 0.5606 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 7.044e-06/0.6902, allocations: 4 kB / 0.7183 GB, free: 13.04 MB / 0.5606 GB Notification: Performance of matching and sorting (n=236) (initialization_lambda0): time 0.005064/0.6953, allocations: 2.709 MB / 0.7209 GB, free: 10.32 MB / 0.5606 GB Notification: Performance of prepare postOptimizeDAE: time 2.042e-05/0.6954, allocations: 8 kB / 0.7209 GB, free: 10.31 MB / 0.5606 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.414e-05/0.6954, allocations: 8 kB / 0.7209 GB, free: 10.3 MB / 0.5606 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005425/0.6959, allocations: 125 kB / 0.721 GB, free: 10.18 MB / 0.5606 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001259/0.6972, allocations: 339.5 kB / 0.7214 GB, free: 9.844 MB / 0.5606 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.004033/0.7012, allocations: 2.653 MB / 0.724 GB, free: 6.977 MB / 0.5606 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002108/0.7034, allocations: 173.1 kB / 0.7241 GB, free: 6.809 MB / 0.5606 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001699/0.7035, allocations: 83.97 kB / 0.7242 GB, free: 6.727 MB / 0.5606 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 37 * 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 (166): * Single equations (assignments): 161 * Array equations: 2 * Algorithm blocks: 0 * Record equations: 2 * 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 {(1,4)} Notification: Performance of prepare postOptimizeDAE: time 0.0004282/0.704, allocations: 255.9 kB / 0.7244 GB, free: 6.469 MB / 0.5606 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0004243/0.7044, allocations: 236.9 kB / 0.7247 GB, free: 6.234 MB / 0.5606 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004029/0.7084, allocations: 1.634 MB / 0.7263 GB, free: 4.598 MB / 0.5606 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.814e-05/0.7085, allocations: 12 kB / 0.7263 GB, free: 4.586 MB / 0.5606 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.068e-06/0.7085, allocations: 4 kB / 0.7263 GB, free: 4.582 MB / 0.5606 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 8.667e-06/0.7085, allocations: 7.984 kB / 0.7263 GB, free: 4.574 MB / 0.5606 GB 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 0.006578/0.7151, allocations: 3.166 MB / 0.7294 GB, free: 1.316 MB / 0.5606 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.534e-06/0.7151, allocations: 4 kB / 0.7294 GB, free: 1.312 MB / 0.5606 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0009146/0.716, allocations: 176 kB / 0.7296 GB, free: 1.141 MB / 0.5606 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.000257/0.7163, allocations: 80.7 kB / 0.7296 GB, free: 1.059 MB / 0.5606 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.17e-05/0.7164, allocations: 31.97 kB / 0.7297 GB, free: 1.027 MB / 0.5606 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0004163/0.7168, allocations: 0.5953 MB / 0.7302 GB, free: 416 kB / 0.5606 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.577e-06/0.7168, allocations: 4 kB / 0.7302 GB, free: 412 kB / 0.5606 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00362/0.7205, allocations: 1.558 MB / 0.7318 GB, free: 14.79 MB / 0.5762 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001115/0.7216, allocations: 429.6 kB / 0.7322 GB, free: 14.35 MB / 0.5762 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002937/0.7219, allocations: 19.98 kB / 0.7322 GB, free: 14.33 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001329/0.7232, allocations: 107.9 kB / 0.7323 GB, free: 14.23 MB / 0.5762 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001263/0.7234, allocations: 64.36 kB / 0.7324 GB, free: 14.16 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 9.948e-05/0.7235, allocations: 47.91 kB / 0.7324 GB, free: 14.12 MB / 0.5762 GB Notification: Performance of sorting global known variables: time 0.002599/0.7261, allocations: 1.737 MB / 0.7341 GB, free: 12.38 MB / 0.5762 GB Notification: Performance of sort global known variables: time 2.21e-07/0.7261, allocations: 0 / 0.7341 GB, free: 12.38 MB / 0.5762 GB Notification: Performance of remove unused functions: time 0.00378/0.7299, allocations: 1.244 MB / 0.7353 GB, free: 11.13 MB / 0.5762 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 9 * 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 simulation (71): * Single equations (assignments): 62 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 8 * 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 {(1,5)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001809/0.7317, allocations: 0.7568 MB / 0.7361 GB, free: 10.38 MB / 0.5762 GB Notification: Performance of simCode: created initialization part: time 0.00676/0.7385, allocations: 3.527 MB / 0.7395 GB, free: 6.848 MB / 0.5762 GB Notification: Performance of simCode: created event and clocks part: time 7.955e-06/0.7385, allocations: 4 kB / 0.7395 GB, free: 6.844 MB / 0.5762 GB Notification: Performance of simCode: created simulation system equations: time 0.001535/0.7401, allocations: 0.5974 MB / 0.7401 GB, free: 6.246 MB / 0.5762 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00537/0.7455, allocations: 1.133 MB / 0.7412 GB, free: 5.148 MB / 0.5762 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.007611/0.7531, allocations: 4.976 MB / 0.7461 GB, free: 112 kB / 0.5762 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.2694/1.023, allocations: 1.708 MB / 0.7477 GB, free: 162.4 MB / 0.5762 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001047/1.024, allocations: 208 kB / 0.7479 GB, free: 162.4 MB / 0.5762 GB Notification: Performance of SimCode: time 7.51e-07/1.024, allocations: 0.6875 kB / 0.7479 GB, free: 162.4 MB / 0.5762 GB Notification: Performance of Templates: time 0.08225/1.106, allocations: 54.73 MB / 0.8014 GB, free: 134.8 MB / 0.5762 GB make -j1 -f IBPSA_latest_IBPSA.Fluid.Movers.Validation.SpeedControlled_y_linear.makefile (rm -f IBPSA_latest_IBPSA.Fluid.Movers.Validation.SpeedControlled_y_linear.pipe ; mkfifo IBPSA_latest_IBPSA.Fluid.Movers.Validation.SpeedControlled_y_linear.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Fluid.Movers.Validation.SpeedControlled_y_linear.pipe >> ../files/IBPSA_latest_IBPSA.Fluid.Movers.Validation.SpeedControlled_y_linear.sim & ./IBPSA_latest_IBPSA.Fluid.Movers.Validation.SpeedControlled_y_linear -abortSlowSimulation -alarm=480 -lv LOG_STATS > IBPSA_latest_IBPSA.Fluid.Movers.Validation.SpeedControlled_y_linear.pipe 2>&1)