Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_8_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.SingleZone.VAV.SetPoints.Validation.Supply_T.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.Controls.OBC.ASHRAE.G36_PR1.AHUs.SingleZone.VAV.SetPoints.Validation.Supply_T,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.SingleZone.VAV.SetPoints.Validation.Supply_T") translateModel(Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.SingleZone.VAV.SetPoints.Validation.Supply_T,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.SingleZone.VAV.SetPoints.Validation.Supply_T") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001135/0.001135, allocations: 105.3 kB / 16.36 MB, free: 6.305 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001067/0.001067, allocations: 192.1 kB / 17.29 MB, free: 5.875 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.452/1.452, allocations: 205.1 MB / 223.2 MB, free: 12.23 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 1.811/1.811, allocations: 292.3 MB / 0.5496 GB, free: 17.56 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 0.00145/0.00145, allocations: 78.56 kB / 0.673 GB, free: 5.766 MB / 0.545 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2368/0.2382, allocations: 114.6 MB / 0.7849 GB, free: 3.094 MB / 0.6544 GB Notification: Performance of NFInst.instantiate(Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.SingleZone.VAV.SetPoints.Validation.Supply_T): time 0.003649/0.2419, allocations: 2.052 MB / 0.7869 GB, free: 1.035 MB / 0.6544 GB Notification: Performance of NFInst.instExpressions: time 0.4465/0.6884, allocations: 1.294 MB / 0.7881 GB, free: 46.48 MB / 0.6544 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0006189/0.6891, allocations: 9.75 kB / 0.7881 GB, free: 46.48 MB / 0.6544 GB Notification: Performance of NFTyping.typeComponents: time 0.0003605/0.6896, allocations: 64.55 kB / 0.7882 GB, free: 46.48 MB / 0.6544 GB Notification: Performance of NFTyping.typeBindings: time 0.0005556/0.6901, allocations: 65.12 kB / 0.7883 GB, free: 46.48 MB / 0.6544 GB Notification: Performance of NFTyping.typeClassSections: time 0.0009031/0.6911, allocations: 282.4 kB / 0.7885 GB, free: 46.48 MB / 0.6544 GB Notification: Performance of NFFlatten.flatten: time 0.001118/0.6922, allocations: 0.6585 MB / 0.7892 GB, free: 46.48 MB / 0.6544 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0007099/0.6929, allocations: 306.7 kB / 0.7895 GB, free: 46.46 MB / 0.6544 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0004424/0.6934, allocations: 241.6 kB / 0.7897 GB, free: 46.41 MB / 0.6544 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0004227/0.6938, allocations: 282.7 kB / 0.79 GB, free: 46.34 MB / 0.6544 GB Notification: Performance of NFPackage.collectConstants: time 0.0001673/0.694, allocations: 75.25 kB / 0.79 GB, free: 46.34 MB / 0.6544 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0001366/0.6942, allocations: 78.69 kB / 0.7901 GB, free: 46.34 MB / 0.6544 GB Notification: Performance of NFScalarize.scalarize: time 0.0001572/0.6943, allocations: 162.2 kB / 0.7903 GB, free: 46.32 MB / 0.6544 GB Notification: Performance of NFVerifyModel.verify: time 0.0003338/0.6947, allocations: 301.9 kB / 0.7905 GB, free: 46.22 MB / 0.6544 GB Notification: Performance of NFConvertDAE.convert: time 0.001088/0.6958, allocations: 0.9625 MB / 0.7915 GB, free: 46.12 MB / 0.6544 GB Notification: Performance of FrontEnd - DAE generated: time 7.615e-06/0.6958, allocations: 2.625 kB / 0.7915 GB, free: 46.12 MB / 0.6544 GB Notification: Performance of FrontEnd: time 3.216e-06/0.6958, allocations: 0 / 0.7915 GB, free: 46.12 MB / 0.6544 GB Notification: Performance of Transformations before backend: time 3.805e-05/0.6958, allocations: 0 / 0.7915 GB, free: 46.12 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: 141 * Number of variables: 141 Notification: Performance of Generate backend data structure: time 0.002424/0.6983, allocations: 0.9001 MB / 0.7924 GB, free: 45.58 MB / 0.6544 GB Notification: Performance of prepare preOptimizeDAE: time 5.281e-05/0.6983, allocations: 11.03 kB / 0.7924 GB, free: 45.58 MB / 0.6544 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0002176/0.6986, allocations: 66.31 kB / 0.7924 GB, free: 45.55 MB / 0.6544 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001023/0.6996, allocations: 481.4 kB / 0.7929 GB, free: 45.29 MB / 0.6544 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.921e-05/0.6997, allocations: 44.5 kB / 0.7929 GB, free: 45.29 MB / 0.6544 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001029/0.6998, allocations: 55.48 kB / 0.793 GB, free: 45.29 MB / 0.6544 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001304/0.7011, allocations: 0.5115 MB / 0.7935 GB, free: 45.24 MB / 0.6544 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.395e-05/0.7011, allocations: 3.938 kB / 0.7935 GB, free: 45.24 MB / 0.6544 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.708e-05/0.7012, allocations: 26.88 kB / 0.7935 GB, free: 45.24 MB / 0.6544 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.443e-05/0.7012, allocations: 13.91 kB / 0.7935 GB, free: 45.24 MB / 0.6544 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001261/0.7025, allocations: 483.8 kB / 0.794 GB, free: 45.23 MB / 0.6544 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.00321/0.7057, allocations: 1.431 MB / 0.7954 GB, free: 44.86 MB / 0.6544 GB Notification: Performance of preOpt comSubExp (simulation): time 0.00134/0.7071, allocations: 427.3 kB / 0.7958 GB, free: 44.77 MB / 0.6544 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0004974/0.7076, allocations: 179 kB / 0.796 GB, free: 44.71 MB / 0.6544 GB Notification: Performance of preOpt evalFunc (simulation): time 4.537e-05/0.7077, allocations: 5.609 kB / 0.796 GB, free: 44.71 MB / 0.6544 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.576e-05/0.7077, allocations: 41.31 kB / 0.796 GB, free: 44.66 MB / 0.6544 GB Notification: Performance of pre-optimization done (n=37): time 3.607e-06/0.7077, allocations: 0 / 0.796 GB, free: 44.66 MB / 0.6544 GB Notification: Performance of matching and sorting (n=37): time 0.001495/0.7092, allocations: 480.4 kB / 0.7965 GB, free: 44.48 MB / 0.6544 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.136e-05/0.7093, allocations: 56.72 kB / 0.7965 GB, free: 44.41 MB / 0.6544 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0007201/0.71, allocations: 482.2 kB / 0.797 GB, free: 44.18 MB / 0.6544 GB Notification: Performance of collectPreVariables (initialization): time 4.405e-05/0.7101, allocations: 29.7 kB / 0.797 GB, free: 44.15 MB / 0.6544 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002425/0.7103, allocations: 304.5 kB / 0.7973 GB, free: 43.9 MB / 0.6544 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001145/0.7105, allocations: 126.8 kB / 0.7974 GB, free: 43.8 MB / 0.6544 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001959/0.7107, allocations: 91.67 kB / 0.7975 GB, free: 43.75 MB / 0.6544 GB Notification: Performance of setup shared object (initialization): time 0.0001153/0.7108, allocations: 358 kB / 0.7979 GB, free: 43.42 MB / 0.6544 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0005248/0.7113, allocations: 156.7 kB / 0.798 GB, free: 43.36 MB / 0.6544 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.00058/0.7119, allocations: 272 kB / 0.7983 GB, free: 43.17 MB / 0.6544 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001018/0.713, allocations: 425.3 kB / 0.7987 GB, free: 42.92 MB / 0.6544 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.783e-06/0.713, allocations: 2.75 kB / 0.7987 GB, free: 42.92 MB / 0.6544 GB Notification: Performance of matching and sorting (n=58) (initialization): time 0.001382/0.7144, allocations: 0.4962 MB / 0.7992 GB, free: 42.73 MB / 0.6544 GB Notification: Performance of prepare postOptimizeDAE: time 2.467e-05/0.7144, allocations: 7.812 kB / 0.7992 GB, free: 42.73 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.358e-05/0.7144, allocations: 2.688 kB / 0.7992 GB, free: 42.73 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.613e-05/0.7145, allocations: 6.359 kB / 0.7992 GB, free: 42.73 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000608/0.7151, allocations: 111.5 kB / 0.7993 GB, free: 42.73 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.289e-05/0.7151, allocations: 12.23 kB / 0.7993 GB, free: 42.72 MB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.000536/0.7157, allocations: 72.03 kB / 0.7994 GB, free: 42.68 MB / 0.6544 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.973e-05/0.7158, allocations: 15.95 kB / 0.7994 GB, free: 42.68 MB / 0.6544 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0005968/0.7164, allocations: 264.5 kB / 0.7996 GB, free: 42.52 MB / 0.6544 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0004554/0.7168, allocations: 253.8 kB / 0.7999 GB, free: 42.33 MB / 0.6544 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0007787/0.7176, allocations: 399.2 kB / 0.8003 GB, free: 42.08 MB / 0.6544 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 5.691e-06/0.7176, allocations: 3.594 kB / 0.8003 GB, free: 42.08 MB / 0.6544 GB Notification: Performance of matching and sorting (n=58) (initialization_lambda0): time 0.001139/0.7188, allocations: 471 kB / 0.8007 GB, free: 41.89 MB / 0.6544 GB Notification: Performance of prepare postOptimizeDAE: time 1.775e-05/0.7188, allocations: 7.688 kB / 0.8007 GB, free: 41.89 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.566e-06/0.7188, allocations: 3.344 kB / 0.8007 GB, free: 41.89 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.497e-05/0.7189, allocations: 7.016 kB / 0.8007 GB, free: 41.89 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005616/0.7194, allocations: 101.4 kB / 0.8008 GB, free: 41.89 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.682e-05/0.7195, allocations: 10.27 kB / 0.8008 GB, free: 41.89 MB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004196/0.7199, allocations: 51.14 kB / 0.8009 GB, free: 41.86 MB / 0.6544 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.334e-05/0.7199, allocations: 21.3 kB / 0.8009 GB, free: 41.85 MB / 0.6544 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 15 * 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 (58): * Single equations (assignments): 58 * 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 prepare postOptimizeDAE: time 0.0001515/0.7201, allocations: 205 kB / 0.8011 GB, free: 41.66 MB / 0.6544 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001245/0.7202, allocations: 48.59 kB / 0.8011 GB, free: 41.63 MB / 0.6544 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001194/0.7214, allocations: 402 kB / 0.8015 GB, free: 41.45 MB / 0.6544 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 9.227e-06/0.7215, allocations: 4.844 kB / 0.8015 GB, free: 41.45 MB / 0.6544 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.943e-06/0.7215, allocations: 1.344 kB / 0.8015 GB, free: 41.45 MB / 0.6544 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.03e-05/0.7215, allocations: 3.172 kB / 0.8015 GB, free: 41.45 MB / 0.6544 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002717/0.7242, allocations: 1.237 MB / 0.8027 GB, free: 40.66 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.752e-05/0.7242, allocations: 5.656 kB / 0.8028 GB, free: 40.66 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004906/0.7247, allocations: 75.03 kB / 0.8028 GB, free: 40.66 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.628e-05/0.7248, allocations: 15.16 kB / 0.8028 GB, free: 40.66 MB / 0.6544 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.859e-05/0.7248, allocations: 12.44 kB / 0.8028 GB, free: 40.66 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.504e-05/0.7249, allocations: 7.719 kB / 0.8029 GB, free: 40.66 MB / 0.6544 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.163e-05/0.7249, allocations: 15.61 kB / 0.8029 GB, free: 40.65 MB / 0.6544 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001208/0.7261, allocations: 0.5957 MB / 0.8035 GB, free: 40.21 MB / 0.6544 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001666/0.7263, allocations: 136.2 kB / 0.8036 GB, free: 40.08 MB / 0.6544 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 8.924e-05/0.7264, allocations: 12.66 kB / 0.8036 GB, free: 40.07 MB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0004183/0.7268, allocations: 33.17 kB / 0.8036 GB, free: 40.06 MB / 0.6544 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001067/0.7269, allocations: 42.17 kB / 0.8037 GB, free: 40.05 MB / 0.6544 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.575e-05/0.727, allocations: 13.73 kB / 0.8037 GB, free: 40.05 MB / 0.6544 GB Notification: Performance of sorting global known variables: time 0.0006277/0.7276, allocations: 327.8 kB / 0.804 GB, free: 39.89 MB / 0.6544 GB Notification: Performance of sort global known variables: time 1.7e-07/0.7276, allocations: 0 / 0.804 GB, free: 39.89 MB / 0.6544 GB Notification: Performance of remove unused functions: time 0.001287/0.7289, allocations: 166.3 kB / 0.8042 GB, free: 39.84 MB / 0.6544 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 21 * 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 0.0002021/0.7291, allocations: 116.2 kB / 0.8043 GB, free: 39.75 MB / 0.6544 GB Notification: Performance of simCode: created initialization part: time 0.002096/0.7312, allocations: 0.5852 MB / 0.8048 GB, free: 39.59 MB / 0.6544 GB Notification: Performance of simCode: created event and clocks part: time 8.165e-06/0.7313, allocations: 0 / 0.8048 GB, free: 39.59 MB / 0.6544 GB Notification: Performance of simCode: created simulation system equations: time 0.0006576/0.7319, allocations: 183.7 kB / 0.805 GB, free: 39.54 MB / 0.6544 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0009352/0.7329, allocations: 69.55 kB / 0.8051 GB, free: 39.51 MB / 0.6544 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002588/0.7355, allocations: 0.9852 MB / 0.806 GB, free: 38.84 MB / 0.6544 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004869/0.736, allocations: 0.8478 MB / 0.8069 GB, free: 38.13 MB / 0.6544 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002157/0.7362, allocations: 44.97 kB / 0.8069 GB, free: 38.13 MB / 0.6544 GB Notification: Performance of SimCode: time 9.22e-07/0.7362, allocations: 0.8438 kB / 0.8069 GB, free: 38.13 MB / 0.6544 GB Notification: Performance of Templates: time 0.01459/0.7508, allocations: 5.674 MB / 0.8125 GB, free: 37.66 MB / 0.6544 GB make -j1 -f Buildings_8_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.SingleZone.VAV.SetPoints.Validation.Supply_T.makefile (rm -f Buildings_8_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.SingleZone.VAV.SetPoints.Validation.Supply_T.pipe ; mkfifo Buildings_8_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.SingleZone.VAV.SetPoints.Validation.Supply_T.pipe ; head -c 1048576 < Buildings_8_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.SingleZone.VAV.SetPoints.Validation.Supply_T.pipe >> ../files/Buildings_8_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.SingleZone.VAV.SetPoints.Validation.Supply_T.sim & ./Buildings_8_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.SingleZone.VAV.SetPoints.Validation.Supply_T -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.SingleZone.VAV.SetPoints.Validation.Supply_T.pipe 2>&1)