Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr BuildingSystems_BuildingSystems.Fluid.Movers.Examples.PumpsSeries.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.Examples.PumpsSeries,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.Movers.Examples.PumpsSeries") translateModel(BuildingSystems.Fluid.Movers.Examples.PumpsSeries,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.Movers.Examples.PumpsSeries") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.000756/0.0007563, allocations: 98.27 kB / 15.36 MB, free: 0.7344 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.005167/0.005168, allocations: 170.6 kB / 16.27 MB, free: 6.652 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.361/1.361, allocations: 223.3 MB / 240.3 MB, free: 5.344 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.001836/0.001836, allocations: 263 kB / 291.7 MB, free: 1.883 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo): time 0.9749/0.9749, allocations: 169.5 MB / 0.5004 GB, free: 14.12 MB / 382.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0004313/0.0004313, allocations: 22.23 kB / 0.5987 GB, free: 27.84 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1606/0.161, allocations: 88.54 MB / 0.6851 GB, free: 15.06 MB / 494.1 MB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.Movers.Examples.PumpsSeries): time 0.04847/0.2096, allocations: 50.11 MB / 0.7341 GB, free: 12.8 MB / 0.5294 GB Notification: Performance of NFInst.instExpressions: time 0.02647/0.2361, allocations: 18.07 MB / 0.7517 GB, free: 10.69 MB / 0.545 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003133/0.2392, allocations: 63.62 kB / 0.7518 GB, free: 10.63 MB / 0.545 GB Notification: Performance of NFTyping.typeComponents: time 0.01559/0.2549, allocations: 9.729 MB / 0.7613 GB, free: 0.8828 MB / 0.545 GB Notification: Performance of NFTyping.typeBindings: time 0.3332/0.5881, allocations: 2.424 MB / 0.7636 GB, free: 16.46 MB / 0.545 GB Notification: Performance of NFTyping.typeClassSections: time 0.005975/0.5941, allocations: 1.863 MB / 0.7654 GB, free: 16.46 MB / 0.545 GB [/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/Compiler/NFFrontEnd/NFCeval.mo:1080:9-1080:67:writable] Error: Internal error NFCeval.evalBinaryMul failed to evaluate ‘{0.0, 0.001}[pressure.n] * 0.0‘ Notification: Performance of NFFlatten.flatten: time 0.02256/0.6167, allocations: 15.74 MB / 0.7808 GB, free: 16.37 MB / 0.545 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002804/0.6195, allocations: 1.414 MB / 0.7822 GB, free: 16.21 MB / 0.545 GB Notification: Performance of NFEvalConstants.evaluate: time 0.00382/0.6233, allocations: 1.552 MB / 0.7837 GB, free: 16.2 MB / 0.545 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002746/0.6261, allocations: 1.432 MB / 0.7851 GB, free: 16.08 MB / 0.545 GB Notification: Performance of NFPackage.collectConstants: time 0.0004095/0.6265, allocations: 79.75 kB / 0.7852 GB, free: 16.08 MB / 0.545 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004073/0.6306, allocations: 1.777 MB / 0.7869 GB, free: 16.07 MB / 0.545 GB Notification: Performance of NFScalarize.scalarize: time 0.0009816/0.6316, allocations: 0.7526 MB / 0.7877 GB, free: 15.96 MB / 0.545 GB Notification: Performance of NFVerifyModel.verify: time 0.001781/0.6334, allocations: 1.242 MB / 0.7889 GB, free: 15.52 MB / 0.545 GB Notification: Performance of NFConvertDAE.convert: time 0.006021/0.6394, allocations: 4.2 MB / 0.793 GB, free: 14.92 MB / 0.545 GB Notification: Performance of FrontEnd - DAE generated: time 4.218e-06/0.6395, allocations: 0 / 0.793 GB, free: 14.92 MB / 0.545 GB Notification: Performance of FrontEnd: time 2.174e-06/0.6395, allocations: 1.344 kB / 0.793 GB, free: 14.92 MB / 0.545 GB Notification: Performance of Transformations before backend: time 8.946e-05/0.6396, allocations: 0 / 0.793 GB, free: 14.92 MB / 0.545 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 255 * Number of variables: 255 Notification: Performance of Generate backend data structure: time 0.004979/0.6446, allocations: 2.684 MB / 0.7956 GB, free: 13.11 MB / 0.545 GB Notification: Performance of prepare preOptimizeDAE: time 3.986e-05/0.6446, allocations: 9.688 kB / 0.7956 GB, free: 13.11 MB / 0.545 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.005374/0.65, allocations: 0.9965 MB / 0.7966 GB, free: 12.7 MB / 0.545 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.006673/0.6567, allocations: 3.408 MB / 0.7999 GB, free: 11.28 MB / 0.545 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001317/0.6568, allocations: 93.05 kB / 0.8 GB, free: 11.27 MB / 0.545 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002548/0.6571, allocations: 116.4 kB / 0.8001 GB, free: 11.27 MB / 0.545 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002826/0.6599, allocations: 1.495 MB / 0.8016 GB, free: 10.8 MB / 0.545 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.602e-05/0.66, allocations: 0 / 0.8016 GB, free: 10.8 MB / 0.545 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001192/0.6601, allocations: 45.14 kB / 0.8016 GB, free: 10.8 MB / 0.545 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.641e-05/0.6602, allocations: 37.28 kB / 0.8016 GB, free: 10.8 MB / 0.545 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003126/0.6633, allocations: 1.356 MB / 0.803 GB, free: 10.57 MB / 0.545 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 0.009409/0.6727, allocations: 6.785 MB / 0.8096 GB, free: 6.668 MB / 0.545 GB Notification: Performance of preOpt comSubExp (simulation): time 0.003317/0.6761, allocations: 1.245 MB / 0.8108 GB, free: 6.332 MB / 0.545 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001163/0.6772, allocations: 0.5184 MB / 0.8113 GB, free: 6.242 MB / 0.545 GB Notification: Performance of preOpt evalFunc (simulation): time 0.003614/0.6809, allocations: 2.752 MB / 0.814 GB, free: 4.117 MB / 0.545 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.799e-05/0.6809, allocations: 50.73 kB / 0.814 GB, free: 4.062 MB / 0.545 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.0007416/0.6817, allocations: 127.5 kB / 0.8142 GB, free: 3.984 MB / 0.545 GB Notification: Performance of pre-optimization done (n=62): time 2.545e-06/0.6817, allocations: 0 / 0.8142 GB, free: 3.984 MB / 0.545 GB Notification: Performance of matching and sorting (n=62): time 0.004405/0.6861, allocations: 1.787 MB / 0.8159 GB, free: 3.078 MB / 0.545 GB Notification: Performance of inlineWhenForInitialization (initialization): time 2.507e-05/0.6861, allocations: 62.48 kB / 0.816 GB, free: 3.012 MB / 0.545 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002894/0.689, allocations: 2.528 MB / 0.8184 GB, free: 1.633 MB / 0.545 GB Notification: Performance of collectPreVariables (initialization): time 0.0001262/0.6892, allocations: 44.61 kB / 0.8185 GB, free: 1.59 MB / 0.545 GB Notification: Performance of collectInitialEqns (initialization): time 0.0006166/0.6898, allocations: 1.014 MB / 0.8195 GB, free: 0.7148 MB / 0.545 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001799/0.69, allocations: 229 kB / 0.8197 GB, free: 0.5195 MB / 0.545 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002151/0.6902, allocations: 212.1 kB / 0.8199 GB, free: 408 kB / 0.545 GB Notification: Performance of setup shared object (initialization): time 3.583e-05/0.6902, allocations: 301.1 kB / 0.8202 GB, free: 104 kB / 0.545 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001907/0.6922, allocations: 1.156 MB / 0.8213 GB, free: 15.55 MB / 0.5606 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002165/0.6943, allocations: 1.565 MB / 0.8228 GB, free: 14.52 MB / 0.5606 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.004027/0.6984, allocations: 2.504 MB / 0.8253 GB, free: 12.25 MB / 0.5606 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.494e-06/0.6984, allocations: 4 kB / 0.8253 GB, free: 12.24 MB / 0.5606 GB Notification: Performance of matching and sorting (n=240) (initialization): time 0.005464/0.7039, allocations: 3.087 MB / 0.8283 GB, free: 9.188 MB / 0.5606 GB Notification: Performance of prepare postOptimizeDAE: time 0.0002117/0.7041, allocations: 354.1 kB / 0.8286 GB, free: 8.73 MB / 0.5606 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.434e-05/0.7041, allocations: 15.08 kB / 0.8287 GB, free: 8.719 MB / 0.5606 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.000497/0.7046, allocations: 148.8 kB / 0.8288 GB, free: 8.57 MB / 0.5606 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001518/0.7062, allocations: 366.7 kB / 0.8291 GB, free: 8.23 MB / 0.5606 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0005901/0.7068, allocations: 0.6672 MB / 0.8298 GB, free: 7.543 MB / 0.5606 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002004/0.7088, allocations: 146.7 kB / 0.8299 GB, free: 7.406 MB / 0.5606 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001813/0.709, allocations: 95.97 kB / 0.83 GB, free: 7.312 MB / 0.5606 GB Notification: Performance of prepare postOptimizeDAE: time 9.498e-06/0.709, allocations: 5.875 kB / 0.83 GB, free: 7.309 MB / 0.5606 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.00471/0.7137, allocations: 2.5 MB / 0.8325 GB, free: 4.855 MB / 0.5606 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.485e-05/0.7138, allocations: 8 kB / 0.8325 GB, free: 4.848 MB / 0.5606 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0009191/0.7147, allocations: 217.3 kB / 0.8327 GB, free: 4.633 MB / 0.5606 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001376/0.7161, allocations: 348.6 kB / 0.833 GB, free: 4.312 MB / 0.5606 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.005731/0.7218, allocations: 3.239 MB / 0.8362 GB, free: 0.9023 MB / 0.5606 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002075/0.7239, allocations: 142 kB / 0.8363 GB, free: 0.7656 MB / 0.5606 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001904/0.7241, allocations: 83.97 kB / 0.8364 GB, free: 0.6836 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 (169): * Single equations (assignments): 164 * 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 {(1,5)} Notification: Performance of prepare postOptimizeDAE: time 0.001375/0.7255, allocations: 0.6941 MB / 0.8371 GB, free: 15.99 MB / 0.5762 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0004437/0.726, allocations: 232.9 kB / 0.8373 GB, free: 15.76 MB / 0.5762 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004212/0.7302, allocations: 1.635 MB / 0.8389 GB, free: 14.13 MB / 0.5762 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.618e-05/0.7302, allocations: 8 kB / 0.8389 GB, free: 14.12 MB / 0.5762 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.536e-06/0.7302, allocations: 0 / 0.8389 GB, free: 14.12 MB / 0.5762 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.151e-05/0.7302, allocations: 7.984 kB / 0.8389 GB, free: 14.12 MB / 0.5762 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 0.006804/0.7371, allocations: 3.123 MB / 0.842 GB, free: 10.97 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.006e-05/0.7371, allocations: 4 kB / 0.842 GB, free: 10.96 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0009769/0.7381, allocations: 166.1 kB / 0.8421 GB, free: 10.81 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0003728/0.7385, allocations: 108.8 kB / 0.8422 GB, free: 10.7 MB / 0.5762 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.768e-05/0.7386, allocations: 31.97 kB / 0.8423 GB, free: 10.67 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0005367/0.7391, allocations: 0.6531 MB / 0.8429 GB, free: 10 MB / 0.5762 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.907e-06/0.7391, allocations: 4.031 kB / 0.8429 GB, free: 9.996 MB / 0.5762 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.005075/0.7442, allocations: 2.171 MB / 0.845 GB, free: 7.797 MB / 0.5762 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001626/0.7458, allocations: 421.8 kB / 0.8454 GB, free: 7.363 MB / 0.5762 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0003498/0.7462, allocations: 20 kB / 0.8454 GB, free: 7.344 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001313/0.7475, allocations: 107.8 kB / 0.8455 GB, free: 7.238 MB / 0.5762 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000126/0.7477, allocations: 64.53 kB / 0.8456 GB, free: 7.176 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 9.724e-05/0.7478, allocations: 47.97 kB / 0.8457 GB, free: 7.129 MB / 0.5762 GB Notification: Performance of sorting global known variables: time 0.002727/0.7505, allocations: 1.68 MB / 0.8473 GB, free: 5.445 MB / 0.5762 GB Notification: Performance of sort global known variables: time 1.8e-07/0.7505, allocations: 0 / 0.8473 GB, free: 5.445 MB / 0.5762 GB Notification: Performance of remove unused functions: time 0.003854/0.7544, allocations: 1.213 MB / 0.8485 GB, free: 4.23 MB / 0.5762 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * Number of states: 4 (floMac1.filter.s[1],floMac1.filter.s[2],floMac2.filter.s[1],floMac2.filter.s[2]) * 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 (69): * Single equations (assignments): 62 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 6 * 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 {(1,7)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001856/0.7562, allocations: 0.7001 MB / 0.8492 GB, free: 3.578 MB / 0.5762 GB Notification: Performance of simCode: created initialization part: time 0.006829/0.7631, allocations: 3.542 MB / 0.8526 GB, free: 104 kB / 0.5762 GB Notification: Performance of simCode: created event and clocks part: time 4.508e-06/0.7631, allocations: 256 / 0.8526 GB, free: 104 kB / 0.5762 GB Notification: Performance of simCode: created simulation system equations: time 0.001504/0.7646, allocations: 0.5876 MB / 0.8532 GB, free: 15.53 MB / 0.5919 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.005424/0.7701, allocations: 1.073 MB / 0.8542 GB, free: 14.47 MB / 0.5919 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.007566/0.7777, allocations: 4.884 MB / 0.859 GB, free: 9.543 MB / 0.5919 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001449/0.7791, allocations: 1.717 MB / 0.8607 GB, free: 7.797 MB / 0.5919 GB Notification: Performance of simCode: alias equations: time 0.003029/0.7822, allocations: 0.6754 MB / 0.8614 GB, free: 7.121 MB / 0.5919 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0005776/0.7828, allocations: 192.7 kB / 0.8615 GB, free: 6.934 MB / 0.5919 GB Notification: Performance of SimCode: time 1.062e-06/0.7828, allocations: 0 / 0.8615 GB, free: 6.934 MB / 0.5919 GB Notification: Performance of Templates: time 0.07936/0.8622, allocations: 49.78 MB / 0.9102 GB, free: 6.004 MB / 0.6387 GB make -j1 -f BuildingSystems_BuildingSystems.Fluid.Movers.Examples.PumpsSeries.makefile (rm -f BuildingSystems_BuildingSystems.Fluid.Movers.Examples.PumpsSeries.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.Movers.Examples.PumpsSeries.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.Movers.Examples.PumpsSeries.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.Movers.Examples.PumpsSeries.sim & ./BuildingSystems_BuildingSystems.Fluid.Movers.Examples.PumpsSeries -abortSlowSimulation -alarm=480 -lv LOG_STATS > BuildingSystems_BuildingSystems.Fluid.Movers.Examples.PumpsSeries.pipe 2>&1)