Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.MotorEfficiencyMethods.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/NcDataReader2 2.5.1-master/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo", uses=false) Using package BuildingSystems with version 2.0.0-beta (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo) Using package NcDataReader2 with version 2.5.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-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(BuildingSystems.Fluid.Movers.BaseClasses.Validation.MotorEfficiencyMethods,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.MotorEfficiencyMethods") translateModel(BuildingSystems.Fluid.Movers.BaseClasses.Validation.MotorEfficiencyMethods,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.MotorEfficiencyMethods") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001399/0.001399, allocations: 111.3 kB / 15.23 MB, free: 0.6406 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001358/0.001358, allocations: 195.3 kB / 16.14 MB, free: 6.715 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.482/1.482, allocations: 222.9 MB / 239.8 MB, free: 4.605 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.002838/0.002838, allocations: 282.6 kB / 290.2 MB, free: 2.199 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo): time 1.072/1.072, allocations: 178.6 MB / 0.5068 GB, free: 4.758 MB / 382.1 MB Notification: Performance of FrontEnd - loaded program: time 0.002803/0.002803, allocations: 104.2 kB / 0.6057 GB, free: 25.11 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1908/0.1936, allocations: 89.14 MB / 0.6928 GB, free: 4.836 MB / 494.1 MB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.Movers.BaseClasses.Validation.MotorEfficiencyMethods): time 0.006768/0.2004, allocations: 4.883 MB / 0.6976 GB, free: 15.93 MB / 0.4981 GB Notification: Performance of NFInst.instExpressions: time 0.01015/0.2106, allocations: 5.73 MB / 0.7032 GB, free: 10.19 MB / 0.4981 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001194/0.2118, allocations: 23.88 kB / 0.7032 GB, free: 10.17 MB / 0.4981 GB Notification: Performance of NFTyping.typeComponents: time 0.02099/0.2329, allocations: 11.17 MB / 0.7141 GB, free: 14.98 MB / 0.5137 GB Notification: Performance of NFTyping.typeBindings: time 0.003249/0.2361, allocations: 1.137 MB / 0.7152 GB, free: 13.84 MB / 0.5137 GB Notification: Performance of NFTyping.typeClassSections: time 0.003375/0.2395, allocations: 1.404 MB / 0.7166 GB, free: 12.44 MB / 0.5137 GB [/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/Compiler/NFFrontEnd/NFCeval.mo:1088:9-1088:67:writable] Error: Internal error NFCeval.evalBinaryMul failed to evaluate ‘{0.0, 1.0}[pressure.n] * 0.0‘ Notification: Performance of NFFlatten.flatten: time 0.02651/0.266, allocations: 15.83 MB / 0.732 GB, free: 12.58 MB / 0.5294 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0004791/0.2665, allocations: 165.8 kB / 0.7322 GB, free: 12.41 MB / 0.5294 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001728/0.2683, allocations: 0.6809 MB / 0.7329 GB, free: 11.72 MB / 0.5294 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001334/0.2696, allocations: 0.8363 MB / 0.7337 GB, free: 10.88 MB / 0.5294 GB Notification: Performance of NFPackage.collectConstants: time 0.000167/0.2698, allocations: 48 kB / 0.7337 GB, free: 10.84 MB / 0.5294 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001958/0.2718, allocations: 0.8773 MB / 0.7346 GB, free: 9.957 MB / 0.5294 GB Notification: Performance of NFScalarize.scalarize: time 0.0009723/0.2728, allocations: 0.888 MB / 0.7354 GB, free: 9.066 MB / 0.5294 GB Notification: Performance of NFVerifyModel.verify: time 0.001378/0.2741, allocations: 0.9706 MB / 0.7364 GB, free: 8.09 MB / 0.5294 GB Notification: Performance of NFConvertDAE.convert: time 0.003753/0.2779, allocations: 2.9 MB / 0.7392 GB, free: 5.18 MB / 0.5294 GB Notification: Performance of FrontEnd - DAE generated: time 5.541e-06/0.2779, allocations: 0 / 0.7392 GB, free: 5.18 MB / 0.5294 GB Notification: Performance of FrontEnd: time 9.31e-07/0.2779, allocations: 0 / 0.7392 GB, free: 5.18 MB / 0.5294 GB Notification: Performance of Transformations before backend: time 3.097e-05/0.278, allocations: 0 / 0.7392 GB, free: 5.18 MB / 0.5294 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 75 * Number of variables: 75 Notification: Performance of Generate backend data structure: time 0.00482/0.2828, allocations: 2.63 MB / 0.7418 GB, free: 2.48 MB / 0.5294 GB Notification: Performance of prepare preOptimizeDAE: time 4.021e-05/0.2828, allocations: 12.03 kB / 0.7418 GB, free: 2.469 MB / 0.5294 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.003441/0.2863, allocations: 0.5941 MB / 0.7424 GB, free: 1.871 MB / 0.5294 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.005728/0.292, allocations: 2.907 MB / 0.7452 GB, free: 14.9 MB / 0.545 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001358/0.2922, allocations: 48.94 kB / 0.7453 GB, free: 14.86 MB / 0.545 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001291/0.2923, allocations: 48 kB / 0.7453 GB, free: 14.81 MB / 0.545 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001761/0.2941, allocations: 0.6695 MB / 0.746 GB, free: 14.13 MB / 0.545 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.129e-05/0.2941, allocations: 0 / 0.746 GB, free: 14.13 MB / 0.545 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.906e-05/0.2942, allocations: 12 kB / 0.746 GB, free: 14.12 MB / 0.545 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.599e-05/0.2942, allocations: 8 kB / 0.746 GB, free: 14.11 MB / 0.545 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002183/0.2964, allocations: 0.6192 MB / 0.7466 GB, free: 13.49 MB / 0.545 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.005162/0.3016, allocations: 2.631 MB / 0.7492 GB, free: 10.79 MB / 0.545 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002371/0.304, allocations: 0.7462 MB / 0.7499 GB, free: 10.04 MB / 0.545 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0009751/0.305, allocations: 309.3 kB / 0.7502 GB, free: 9.73 MB / 0.545 GB Notification: Performance of preOpt evalFunc (simulation): time 4.185e-05/0.305, allocations: 8.266 kB / 0.7502 GB, free: 9.723 MB / 0.545 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.141e-05/0.3051, allocations: 42.84 kB / 0.7502 GB, free: 9.672 MB / 0.545 GB Notification: Performance of pre-optimization done (n=33): time 2.154e-06/0.3051, allocations: 0 / 0.7502 GB, free: 9.672 MB / 0.545 GB Notification: Performance of matching and sorting (n=33): time 0.003847/0.3089, allocations: 1.129 MB / 0.7513 GB, free: 8.535 MB / 0.545 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.736e-05/0.309, allocations: 55.41 kB / 0.7514 GB, free: 8.469 MB / 0.545 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.004915/0.3139, allocations: 3.12 MB / 0.7544 GB, free: 5.332 MB / 0.545 GB Notification: Performance of collectPreVariables (initialization): time 0.0002122/0.3141, allocations: 37.7 kB / 0.7545 GB, free: 5.289 MB / 0.545 GB Notification: Performance of collectInitialEqns (initialization): time 0.0008932/0.315, allocations: 0.8101 MB / 0.7553 GB, free: 4.473 MB / 0.545 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001688/0.3152, allocations: 130.4 kB / 0.7554 GB, free: 4.344 MB / 0.545 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0008274/0.3161, allocations: 0.5792 MB / 0.7559 GB, free: 3.762 MB / 0.545 GB Notification: Performance of setup shared object (initialization): time 0.000138/0.3162, allocations: 309 kB / 0.7562 GB, free: 3.457 MB / 0.545 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002341/0.3185, allocations: 1.241 MB / 0.7575 GB, free: 2.211 MB / 0.545 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002823/0.3214, allocations: 1.706 MB / 0.7591 GB, free: 360 kB / 0.545 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.287/0.6084, allocations: 2.572 MB / 0.7616 GB, free: 65.22 MB / 0.545 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.167e-05/0.6085, allocations: 3.812 kB / 0.7616 GB, free: 65.22 MB / 0.545 GB Notification: Performance of matching and sorting (n=339) (initialization): time 0.005693/0.6142, allocations: 3.27 MB / 0.7648 GB, free: 64.47 MB / 0.545 GB Notification: Performance of prepare postOptimizeDAE: time 2.795e-05/0.6142, allocations: 10.48 kB / 0.7648 GB, free: 64.47 MB / 0.545 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.095e-05/0.6142, allocations: 8.25 kB / 0.7648 GB, free: 64.47 MB / 0.545 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.329e-05/0.6143, allocations: 16.5 kB / 0.7649 GB, free: 64.47 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001555/0.6158, allocations: 410.2 kB / 0.7653 GB, free: 64.43 MB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 3.139e-05/0.6159, allocations: 22.8 kB / 0.7653 GB, free: 64.43 MB / 0.545 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001967/0.6178, allocations: 309.3 kB / 0.7656 GB, free: 64.38 MB / 0.545 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001889/0.618, allocations: 104.8 kB / 0.7657 GB, free: 64.36 MB / 0.545 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.00319/0.6212, allocations: 1.708 MB / 0.7673 GB, free: 63.73 MB / 0.545 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.002204/0.6235, allocations: 1.635 MB / 0.7689 GB, free: 62.9 MB / 0.545 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.003398/0.6269, allocations: 2.436 MB / 0.7713 GB, free: 61.85 MB / 0.545 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 7.174e-06/0.6269, allocations: 3.375 kB / 0.7713 GB, free: 61.85 MB / 0.545 GB Notification: Performance of matching and sorting (n=339) (initialization_lambda0): time 0.004654/0.6316, allocations: 3.11 MB / 0.7744 GB, free: 60.78 MB / 0.545 GB Notification: Performance of prepare postOptimizeDAE: time 1.632e-05/0.6316, allocations: 8.906 kB / 0.7744 GB, free: 60.78 MB / 0.545 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.495e-05/0.6316, allocations: 8.812 kB / 0.7744 GB, free: 60.78 MB / 0.545 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.695e-05/0.6316, allocations: 21.28 kB / 0.7744 GB, free: 60.78 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00141/0.633, allocations: 396.2 kB / 0.7748 GB, free: 60.74 MB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.308e-05/0.6331, allocations: 22.88 kB / 0.7748 GB, free: 60.74 MB / 0.545 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001894/0.635, allocations: 259.9 kB / 0.775 GB, free: 60.67 MB / 0.545 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001359/0.6351, allocations: 93.39 kB / 0.7751 GB, free: 60.65 MB / 0.545 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 39 * 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 (207): * Single equations (assignments): 199 * Array equations: 4 * Algorithm blocks: 0 * Record equations: 4 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.0003589/0.6355, allocations: 259.5 kB / 0.7754 GB, free: 60.41 MB / 0.545 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002339/0.6357, allocations: 220.9 kB / 0.7756 GB, free: 60.28 MB / 0.545 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002425/0.6382, allocations: 0.8857 MB / 0.7765 GB, free: 60.01 MB / 0.545 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.171e-06/0.6382, allocations: 4.594 kB / 0.7765 GB, free: 60.01 MB / 0.545 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.65e-06/0.6382, allocations: 1.688 kB / 0.7765 GB, free: 60.01 MB / 0.545 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.721e-06/0.6382, allocations: 2.016 kB / 0.7765 GB, free: 60.01 MB / 0.545 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001502/0.6397, allocations: 1.229 MB / 0.7777 GB, free: 59.43 MB / 0.545 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.785e-06/0.6397, allocations: 0.6562 kB / 0.7777 GB, free: 59.43 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0007199/0.6404, allocations: 131.9 kB / 0.7778 GB, free: 59.43 MB / 0.545 GB Notification: Performance of postOpt tearingSystem (simulation): time 5.45e-06/0.6404, allocations: 2.031 kB / 0.7778 GB, free: 59.43 MB / 0.545 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.93e-05/0.6405, allocations: 13.08 kB / 0.7778 GB, free: 59.42 MB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 3.146e-06/0.6405, allocations: 4.578 kB / 0.7778 GB, free: 59.42 MB / 0.545 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.253e-06/0.6405, allocations: 0 / 0.7778 GB, free: 59.42 MB / 0.545 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002078/0.6426, allocations: 0.9677 MB / 0.7787 GB, free: 59 MB / 0.545 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004861/0.6431, allocations: 388.8 kB / 0.7791 GB, free: 58.73 MB / 0.545 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002441/0.6433, allocations: 5.281 kB / 0.7791 GB, free: 58.72 MB / 0.545 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001045/0.6444, allocations: 98.03 kB / 0.7792 GB, free: 58.72 MB / 0.545 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.205e-05/0.6445, allocations: 25.08 kB / 0.7792 GB, free: 58.71 MB / 0.545 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.728e-05/0.6445, allocations: 24.03 kB / 0.7793 GB, free: 58.71 MB / 0.545 GB Notification: Performance of sorting global known variables: time 0.002797/0.6473, allocations: 2.043 MB / 0.7813 GB, free: 57.98 MB / 0.545 GB Notification: Performance of sort global known variables: time 2.41e-07/0.6473, allocations: 2.188 kB / 0.7813 GB, free: 57.98 MB / 0.545 GB Notification: Performance of remove unused functions: time 0.002315/0.6497, allocations: 0.9075 MB / 0.7821 GB, free: 57.9 MB / 0.545 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * 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 (37): * Single equations (assignments): 37 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.0008028/0.6505, allocations: 403.2 kB / 0.7825 GB, free: 57.79 MB / 0.545 GB Notification: Performance of simCode: created initialization part: time 0.006117/0.6566, allocations: 3.504 MB / 0.786 GB, free: 56.68 MB / 0.545 GB Notification: Performance of simCode: created event and clocks part: time 3.857e-06/0.6566, allocations: 1.719 kB / 0.786 GB, free: 56.68 MB / 0.545 GB Notification: Performance of simCode: created simulation system equations: time 0.0009677/0.6576, allocations: 335.8 kB / 0.7863 GB, free: 56.61 MB / 0.545 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003397/0.661, allocations: 0.8358 MB / 0.7871 GB, free: 56.41 MB / 0.545 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01457/0.6756, allocations: 5.45 MB / 0.7924 GB, free: 54.2 MB / 0.545 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0009438/0.6766, allocations: 1.644 MB / 0.794 GB, free: 53.13 MB / 0.545 GB Notification: Performance of simCode: alias equations: time 0.002458/0.679, allocations: 0.6735 MB / 0.7947 GB, free: 52.85 MB / 0.545 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004688/0.6795, allocations: 162.5 kB / 0.7948 GB, free: 52.82 MB / 0.545 GB Notification: Performance of SimCode: time 5.11e-07/0.6795, allocations: 0 / 0.7948 GB, free: 52.82 MB / 0.545 GB Notification: Performance of Templates: time 0.051/0.7305, allocations: 42.32 MB / 0.8362 GB, free: 12.55 MB / 0.545 GB make -j1 -f BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.MotorEfficiencyMethods.makefile (rm -f BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.MotorEfficiencyMethods.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.MotorEfficiencyMethods.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.MotorEfficiencyMethods.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.MotorEfficiencyMethods.sim & ./BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.MotorEfficiencyMethods -abortSlowSimulation -alarm=480 -lv LOG_STATS > BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.MotorEfficiencyMethods.pipe 2>&1)