Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Occupants.Office.Occupancy.Validation.Wang2005Occupancy.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) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo", uses=false) Using package Buildings with version 8.1.4 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo) 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(Buildings.Occupants.Office.Occupancy.Validation.Wang2005Occupancy,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Occupants.Office.Occupancy.Validation.Wang2005Occupancy") translateModel(Buildings.Occupants.Office.Occupancy.Validation.Wang2005Occupancy,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Occupants.Office.Occupancy.Validation.Wang2005Occupancy") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001384/0.001384, allocations: 100.8 kB / 16.26 MB, free: 6.418 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001745/0.001745, allocations: 191.2 kB / 17.2 MB, free: 5.953 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.641/1.641, allocations: 205.1 MB / 223.1 MB, free: 12.32 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo): time 1.908/1.908, allocations: 292.3 MB / 0.5495 GB, free: 17.61 MB / 462.1 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 0.001447/0.001447, allocations: 63.91 kB / 0.6721 GB, free: 6.535 MB / 0.545 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2606/0.2621, allocations: 114.6 MB / 0.784 GB, free: 3.859 MB / 0.6544 GB Notification: Performance of NFInst.instantiate(Buildings.Occupants.Office.Occupancy.Validation.Wang2005Occupancy): time 0.002541/0.2647, allocations: 1.328 MB / 0.7853 GB, free: 2.516 MB / 0.6544 GB Notification: Performance of NFInst.instExpressions: time 0.0007737/0.2654, allocations: 355.8 kB / 0.7857 GB, free: 2.164 MB / 0.6544 GB Notification: Performance of NFInst.updateImplicitVariability: time 3.278e-05/0.2655, allocations: 4 kB / 0.7857 GB, free: 2.16 MB / 0.6544 GB Notification: Performance of NFTyping.typeComponents: time 8.988e-05/0.2656, allocations: 3.984 kB / 0.7857 GB, free: 2.156 MB / 0.6544 GB Notification: Performance of NFTyping.typeBindings: time 2.72e-05/0.2656, allocations: 3.938 kB / 0.7857 GB, free: 2.152 MB / 0.6544 GB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/Math/Random.mo:127:7-213:23:writable] Warning: Pure function 'Modelica.Math.Random.Generators.Xorshift64star.initialState' contains a call to impure function 'Modelica.Math.Random.Generators.Xorshift64star.random'. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/Math/Random.mo:851:5-931:39:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initialStateWithXorshift64star' contains a call to impure function 'Modelica.Math.Random.Generators.Xorshift64star.initialState'. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/Math/Random.mo:499:7-563:23:writable] Warning: Pure function 'Modelica.Math.Random.Generators.Xorshift1024star.initialState' contains a call to impure function 'Modelica.Math.Random.Utilities.initialStateWithXorshift64star'. Notification: Performance of NFTyping.typeClassSections: time 0.0004742/0.2661, allocations: 91.72 kB / 0.7858 GB, free: 2.062 MB / 0.6544 GB Notification: Performance of NFFlatten.flatten: time 0.0001137/0.2662, allocations: 59.91 kB / 0.7858 GB, free: 2.004 MB / 0.6544 GB Notification: Performance of NFFlatten.resolveConnections: time 4.582e-05/0.2663, allocations: 11.86 kB / 0.7858 GB, free: 1.992 MB / 0.6544 GB Notification: Performance of NFEvalConstants.evaluate: time 3.174e-05/0.2663, allocations: 12 kB / 0.7858 GB, free: 1.98 MB / 0.6544 GB Notification: Performance of NFSimplifyModel.simplify: time 5.783e-05/0.2664, allocations: 23.91 kB / 0.7859 GB, free: 1.957 MB / 0.6544 GB Notification: Performance of NFPackage.collectConstants: time 1.343e-05/0.2664, allocations: 4 kB / 0.7859 GB, free: 1.953 MB / 0.6544 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0001696/0.2666, allocations: 83.86 kB / 0.7859 GB, free: 1.871 MB / 0.6544 GB Notification: Performance of NFScalarize.scalarize: time 4.099e-05/0.2666, allocations: 27.92 kB / 0.786 GB, free: 1.844 MB / 0.6544 GB Notification: Performance of NFVerifyModel.verify: time 6.352e-05/0.2667, allocations: 51.66 kB / 0.786 GB, free: 1.793 MB / 0.6544 GB Notification: Performance of NFConvertDAE.convert: time 0.0002266/0.2669, allocations: 155.6 kB / 0.7862 GB, free: 1.641 MB / 0.6544 GB Notification: Performance of FrontEnd - DAE generated: time 3.957e-06/0.2669, allocations: 0 / 0.7862 GB, free: 1.641 MB / 0.6544 GB Notification: Performance of FrontEnd: time 1.102e-06/0.267, allocations: 0 / 0.7862 GB, free: 1.641 MB / 0.6544 GB Notification: Performance of Transformations before backend: time 4.979e-06/0.267, allocations: 0 / 0.7862 GB, free: 1.641 MB / 0.6544 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 38 * Number of variables: 38 Notification: Performance of Generate backend data structure: time 0.0005287/0.2675, allocations: 0.5125 MB / 0.7867 GB, free: 1.07 MB / 0.6544 GB Notification: Performance of prepare preOptimizeDAE: time 3.85e-05/0.2675, allocations: 8.031 kB / 0.7867 GB, free: 1.062 MB / 0.6544 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001183/0.2677, allocations: 24.73 kB / 0.7867 GB, free: 1.039 MB / 0.6544 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0001268/0.2678, allocations: 172.3 kB / 0.7869 GB, free: 0.832 MB / 0.6544 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.881e-05/0.2678, allocations: 384 / 0.7869 GB, free: 0.832 MB / 0.6544 GB Notification: Performance of preOpt expandDerOperator (simulation): time 1.353e-05/0.2678, allocations: 4.375 kB / 0.7869 GB, free: 0.8281 MB / 0.6544 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0002789/0.2681, allocations: 245.9 kB / 0.7871 GB, free: 0.582 MB / 0.6544 GB Notification: Performance of preOpt findStateOrder (simulation): time 8.225e-06/0.2681, allocations: 192 / 0.7871 GB, free: 0.582 MB / 0.6544 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 1.476e-05/0.2682, allocations: 7.938 kB / 0.7871 GB, free: 0.5742 MB / 0.6544 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.99e-06/0.2682, allocations: 0 / 0.7871 GB, free: 0.5742 MB / 0.6544 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0001508/0.2683, allocations: 147.9 kB / 0.7873 GB, free: 440 kB / 0.6544 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0001903/0.2685, allocations: 197.2 kB / 0.7874 GB, free: 192 kB / 0.6544 GB Notification: Performance of preOpt comSubExp (simulation): time 0.4307/0.6992, allocations: 0.532 MB / 0.788 GB, free: 48.8 MB / 0.6544 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003124/0.6996, allocations: 0.5218 MB / 0.7885 GB, free: 48.79 MB / 0.6544 GB Notification: Performance of preOpt evalFunc (simulation): time 1.494e-05/0.6996, allocations: 0 / 0.7885 GB, free: 48.79 MB / 0.6544 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0004236/0.7, allocations: 398.4 kB / 0.7889 GB, free: 48.68 MB / 0.6544 GB Notification: Performance of pre-optimization done (n=39): time 2.344e-06/0.7, allocations: 0 / 0.7889 GB, free: 48.68 MB / 0.6544 GB Notification: Performance of matching and sorting (n=39): time 0.0006801/0.7007, allocations: 0.6928 MB / 0.7895 GB, free: 48.61 MB / 0.6544 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.446e-05/0.7008, allocations: 105.9 kB / 0.7896 GB, free: 48.52 MB / 0.6544 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 6.533e-05/0.7009, allocations: 102.1 kB / 0.7897 GB, free: 48.42 MB / 0.6544 GB Notification: Performance of collectPreVariables (initialization): time 1.035e-05/0.7009, allocations: 25.7 kB / 0.7898 GB, free: 48.39 MB / 0.6544 GB Notification: Performance of collectInitialEqns (initialization): time 1.931e-05/0.7009, allocations: 90.22 kB / 0.7898 GB, free: 48.3 MB / 0.6544 GB Notification: Performance of collectInitialBindings (initialization): time 8.102e-05/0.701, allocations: 77.58 kB / 0.7899 GB, free: 48.28 MB / 0.6544 GB Notification: Performance of simplifyInitialFunctions (initialization): time 4.926e-05/0.701, allocations: 31.86 kB / 0.7899 GB, free: 48.26 MB / 0.6544 GB Notification: Performance of setup shared object (initialization): time 5.616e-05/0.7011, allocations: 330.2 kB / 0.7903 GB, free: 47.95 MB / 0.6544 GB Notification: Performance of preBalanceInitialSystem (initialization): time 7.839e-05/0.7012, allocations: 76.08 kB / 0.7903 GB, free: 47.95 MB / 0.6544 GB Notification: Performance of partitionIndependentBlocks (initialization): time 6.501e-05/0.7013, allocations: 81.98 kB / 0.7904 GB, free: 47.95 MB / 0.6544 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0002232/0.7015, allocations: 358.3 kB / 0.7907 GB, free: 47.87 MB / 0.6544 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.623e-06/0.7015, allocations: 1 kB / 0.7908 GB, free: 47.87 MB / 0.6544 GB Notification: Performance of matching and sorting (n=40) (initialization): time 0.0002652/0.7018, allocations: 336.5 kB / 0.7911 GB, free: 47.8 MB / 0.6544 GB Notification: Performance of prepare postOptimizeDAE: time 6.346e-05/0.7018, allocations: 82.02 kB / 0.7911 GB, free: 47.77 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.718e-06/0.7019, allocations: 1.5 kB / 0.7912 GB, free: 47.77 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.713e-05/0.7019, allocations: 0 / 0.7912 GB, free: 47.77 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 6.137e-05/0.7019, allocations: 4.969 kB / 0.7912 GB, free: 47.77 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 6.933e-06/0.702, allocations: 1.172 kB / 0.7912 GB, free: 47.77 MB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0001001/0.7021, allocations: 23.31 kB / 0.7912 GB, free: 47.76 MB / 0.6544 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 1.648e-05/0.7021, allocations: 5.25 kB / 0.7912 GB, free: 47.76 MB / 0.6544 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 40 (occ.state[33],occ.state[32],occ.state[31],occ.state[30],occ.state[29],occ.state[28],occ.state[27],occ.state[26],occ.state[25],occ.state[24],occ.state[23],occ.state[22],occ.state[21],occ.state[20],occ.state[19],occ.state[18],occ.state[17],occ.state[16],occ.state[15],occ.state[14],occ.state[13],occ.state[12],occ.state[11],occ.state[10],occ.state[9],occ.state[8],occ.state[7],occ.state[6],occ.state[5],occ.state[4],occ.state[3],occ.state[2],occ.state[1],occ.r,occ.hold_time,occ.tNext,$PRE.occ.tNext,occ.mu,occ.occ,$whenCondition1) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (2): * Single equations (assignments): 1 * Array equations: 0 * Algorithm blocks: 1 * 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 prepare postOptimizeDAE: time 0.0001866/0.7023, allocations: 276.1 kB / 0.7914 GB, free: 47.61 MB / 0.6544 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 3.604e-05/0.7023, allocations: 22.56 kB / 0.7915 GB, free: 47.61 MB / 0.6544 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 1.158e-05/0.7023, allocations: 5.219 kB / 0.7915 GB, free: 47.61 MB / 0.6544 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.825e-06/0.7023, allocations: 3.312 kB / 0.7915 GB, free: 47.61 MB / 0.6544 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.436e-06/0.7024, allocations: 0.5938 kB / 0.7915 GB, free: 47.61 MB / 0.6544 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.615e-06/0.7024, allocations: 4.547 kB / 0.7915 GB, free: 47.61 MB / 0.6544 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0001247/0.7025, allocations: 250.2 kB / 0.7917 GB, free: 47.41 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.052e-06/0.7025, allocations: 0 / 0.7917 GB, free: 47.41 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 4.41e-07/0.7025, allocations: 0 / 0.7917 GB, free: 47.41 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.332e-06/0.7025, allocations: 0 / 0.7917 GB, free: 47.41 MB / 0.6544 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.181e-05/0.7025, allocations: 16.94 kB / 0.7917 GB, free: 47.41 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.473e-06/0.7025, allocations: 1.875 kB / 0.7917 GB, free: 47.41 MB / 0.6544 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 7.91e-07/0.7025, allocations: 0 / 0.7917 GB, free: 47.41 MB / 0.6544 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0009128/0.7035, allocations: 1.289 MB / 0.793 GB, free: 47.3 MB / 0.6544 GB Notification: Performance of postOpt removeConstants (simulation): time 2.601e-05/0.7035, allocations: 94.53 kB / 0.7931 GB, free: 47.2 MB / 0.6544 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.992e-05/0.7036, allocations: 70.02 kB / 0.7932 GB, free: 47.2 MB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 6.945e-05/0.7037, allocations: 10.25 kB / 0.7932 GB, free: 47.2 MB / 0.6544 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 3.589e-05/0.7037, allocations: 9.703 kB / 0.7932 GB, free: 47.2 MB / 0.6544 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.003e-05/0.7037, allocations: 14.5 kB / 0.7932 GB, free: 47.2 MB / 0.6544 GB Notification: Performance of sorting global known variables: time 2.201e-05/0.7038, allocations: 86.19 kB / 0.7933 GB, free: 47.12 MB / 0.6544 GB Notification: Performance of sort global known variables: time 1e-07/0.7038, allocations: 0.5312 kB / 0.7933 GB, free: 47.12 MB / 0.6544 GB Notification: Performance of remove unused functions: time 0.0002874/0.7041, allocations: 67.25 kB / 0.7933 GB, free: 47.12 MB / 0.6544 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 39 ($whenCondition1,occ.occ,occ.mu,occ.tNext,occ.hold_time,occ.r,occ.state[1],occ.state[2],occ.state[3],occ.state[4],occ.state[5],occ.state[6],occ.state[7],occ.state[8],occ.state[9],occ.state[10],occ.state[11],occ.state[12],occ.state[13],occ.state[14],occ.state[15],occ.state[16],occ.state[17],occ.state[18],occ.state[19],occ.state[20],occ.state[21],occ.state[22],occ.state[23],occ.state[24],occ.state[25],occ.state[26],occ.state[27],occ.state[28],occ.state[29],occ.state[30],occ.state[31],occ.state[32],occ.state[33]) * Number of discrete states: 39 (occ.tNext,occ.hold_time,occ.mu,occ.occ,occ.state[33],occ.state[32],occ.state[31],occ.state[30],occ.state[29],occ.state[28],occ.state[27],occ.state[26],occ.state[25],occ.state[24],occ.state[23],occ.state[22],occ.state[21],occ.state[20],occ.state[19],occ.state[18],occ.state[17],occ.state[16],occ.state[15],occ.state[14],occ.state[13],occ.state[12],occ.state[11],occ.state[10],occ.state[9],occ.state[8],occ.state[7],occ.state[6],occ.state[5],occ.state[4],occ.state[3],occ.state[2],occ.state[1],occ.r,$whenCondition1) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (1): * Single equations (assignments): 0 * Array equations: 0 * Algorithm blocks: 1 * 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 0.0003922/0.7045, allocations: 250.5 kB / 0.7936 GB, free: 47.03 MB / 0.6544 GB Notification: Performance of simCode: created initialization part: time 0.001168/0.7056, allocations: 1.968 MB / 0.7955 GB, free: 46.15 MB / 0.6544 GB Notification: Performance of simCode: created event and clocks part: time 2.364e-06/0.7056, allocations: 4.438 kB / 0.7955 GB, free: 46.15 MB / 0.6544 GB Notification: Performance of simCode: created simulation system equations: time 0.001075/0.7067, allocations: 2.012 MB / 0.7975 GB, free: 44.97 MB / 0.6544 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0002247/0.707, allocations: 17.91 kB / 0.7975 GB, free: 44.97 MB / 0.6544 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0005027/0.7075, allocations: 364.1 kB / 0.7978 GB, free: 44.78 MB / 0.6544 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0001487/0.7076, allocations: 0.7164 MB / 0.7985 GB, free: 44.07 MB / 0.6544 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 1.206e-05/0.7077, allocations: 7.438 kB / 0.7985 GB, free: 44.07 MB / 0.6544 GB Notification: Performance of SimCode: time 4.61e-07/0.7077, allocations: 3.906 kB / 0.7985 GB, free: 44.07 MB / 0.6544 GB Notification: Performance of Templates: time 0.004396/0.7121, allocations: 2.432 MB / 0.8009 GB, free: 43.89 MB / 0.6544 GB make -j1 -f Buildings_8_Buildings.Occupants.Office.Occupancy.Validation.Wang2005Occupancy.makefile (rm -f Buildings_8_Buildings.Occupants.Office.Occupancy.Validation.Wang2005Occupancy.pipe ; mkfifo Buildings_8_Buildings.Occupants.Office.Occupancy.Validation.Wang2005Occupancy.pipe ; head -c 1048576 < Buildings_8_Buildings.Occupants.Office.Occupancy.Validation.Wang2005Occupancy.pipe >> ../files/Buildings_8_Buildings.Occupants.Office.Occupancy.Validation.Wang2005Occupancy.sim & ./Buildings_8_Buildings.Occupants.Office.Occupancy.Validation.Wang2005Occupancy -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8_Buildings.Occupants.Office.Occupancy.Validation.Wang2005Occupancy.pipe 2>&1)