Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.Applications.DataCenters.ChillerCooled.Controls.Validation.ConstantSpeedPumpStage.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+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/ModelicaServices 3.2.3+maint.om/package.mo", uses=false) Using package ModelicaServices with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/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 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo) Using package Buildings with version 7.0.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo) Running command: "" <> buildModelFMU(Buildings.Applications.DataCenters.ChillerCooled.Controls.Validation.ConstantSpeedPumpStage,fileNamePrefix="Buildings_maint_7_0_x_Buildings_Applications_DataCenters_ChillerCooled_Controls_Validation_ConstantSpeedPumpStage",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Applications.DataCenters.ChillerCooled.Controls.Validation.ConstantSpeedPumpStage,fileNamePrefix="Buildings_maint_7_0_x_Buildings_Applications_DataCenters_ChillerCooled_Controls_Validation_ConstantSpeedPumpStage",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo): time 1.588/1.588, allocations: 251.9 MB / 266.9 MB, free: 11.01 MB / 218.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.001149/0.001149, allocations: 181 kB / 326.5 MB, free: 2.254 MB / 250.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 2.083/2.083, allocations: 205.4 MB / 0.5775 GB, free: 20.27 MB / 426.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.0009914/0.000991, allocations: 103.8 kB / 0.6821 GB, free: 12.9 MB / 0.5105 GB Notification: Performance of FrontEnd - loaded program: time 0.0003449/0.0003449, allocations: 8.594 kB / 0.7963 GB, free: 135.1 MB / 0.6042 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2622/0.2626, allocations: 106.3 MB / 0.9002 GB, free: 63.86 MB / 0.6042 GB Notification: Performance of FrontEnd - scodeFlatten: time 0.1881/0.4508, allocations: 140.5 MB / 1.037 GB, free: 3.219 MB / 0.6823 GB Notification: Performance of FrontEnd - mkProgramGraph: time 0.0002834/0.4511, allocations: 99.92 kB / 1.037 GB, free: 3.121 MB / 0.6823 GB Notification: Performance of FrontEnd - DAE generated: time 0.0433/0.4944, allocations: 16.35 MB / 1.053 GB, free: 2.707 MB / 0.698 GB Notification: Performance of FrontEnd: time 3.337e-06/0.4945, allocations: 0 / 1.053 GB, free: 2.707 MB / 0.698 GB Notification: Performance of Transformations before backend: time 9.479e-05/0.4946, allocations: 24.12 kB / 1.053 GB, free: 2.684 MB / 0.698 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 124 * Number of variables: 124 Notification: Performance of Generate backend data structure: time 0.002652/0.4972, allocations: 1.003 MB / 1.054 GB, free: 1.609 MB / 0.698 GB Notification: Performance of prepare preOptimizeDAE: time 5.677e-05/0.4973, allocations: 8.031 kB / 1.054 GB, free: 1.602 MB / 0.698 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0002871/0.4976, allocations: 90.52 kB / 1.054 GB, free: 1.504 MB / 0.698 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0003502/0.498, allocations: 87.05 kB / 1.055 GB, free: 1.418 MB / 0.698 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001286/0.4993, allocations: 0.5622 MB / 1.055 GB, free: 0.8164 MB / 0.698 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 7.195e-05/0.4993, allocations: 52.98 kB / 1.055 GB, free: 0.7617 MB / 0.698 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.000118/0.4995, allocations: 52 kB / 1.055 GB, free: 0.7109 MB / 0.698 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001173/0.5006, allocations: 0.5755 MB / 1.056 GB, free: 112 kB / 0.698 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.504e-05/0.5007, allocations: 0 / 1.056 GB, free: 112 kB / 0.698 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.681e-05/0.5007, allocations: 23.98 kB / 1.056 GB, free: 88 kB / 0.698 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.343e-05/0.5008, allocations: 12 kB / 1.056 GB, free: 76 kB / 0.698 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.546/1.047, allocations: 447.1 kB / 1.056 GB, free: 143.8 MB / 0.698 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002828/1.05, allocations: 1.614 MB / 1.058 GB, free: 143.5 MB / 0.698 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0009617/1.051, allocations: 0.5163 MB / 1.058 GB, free: 143.4 MB / 0.698 GB Notification: Performance of preOpt evalFunc (simulation): time 4.752e-05/1.051, allocations: 14.92 kB / 1.058 GB, free: 143.4 MB / 0.698 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0005563/1.051, allocations: 312.3 kB / 1.059 GB, free: 143.4 MB / 0.698 GB Notification: Performance of pre-optimization done (n=65): time 3.697e-06/1.051, allocations: 0 / 1.059 GB, free: 143.4 MB / 0.698 GB Notification: Performance of matching and sorting (n=65): time 0.001332/1.053, allocations: 0.6837 MB / 1.059 GB, free: 143.3 MB / 0.698 GB Notification: Performance of inlineWhenForInitialization (initialization): time 8.699e-05/1.053, allocations: 171.1 kB / 1.059 GB, free: 143.1 MB / 0.698 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0008723/1.054, allocations: 0.6578 MB / 1.06 GB, free: 143 MB / 0.698 GB Notification: Performance of collectPreVariables (initialization): time 7.597e-05/1.054, allocations: 52.88 kB / 1.06 GB, free: 143 MB / 0.698 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002344/1.054, allocations: 296 kB / 1.06 GB, free: 142.8 MB / 0.698 GB Notification: Performance of collectInitialBindings (initialization): time 0.000145/1.054, allocations: 162.3 kB / 1.061 GB, free: 142.8 MB / 0.698 GB Notification: Performance of simplifyInitialFunctions (initialization): time 3.261e-05/1.054, allocations: 14.5 kB / 1.061 GB, free: 142.8 MB / 0.698 GB Notification: Performance of setup shared object (initialization): time 0.0001526/1.054, allocations: 386.9 kB / 1.061 GB, free: 142.4 MB / 0.698 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000362/1.055, allocations: 196 kB / 1.061 GB, free: 142.4 MB / 0.698 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005519/1.055, allocations: 377.2 kB / 1.062 GB, free: 142.3 MB / 0.698 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0003732/1.056, allocations: 199.4 kB / 1.062 GB, free: 142.3 MB / 0.698 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.488e-06/1.056, allocations: 0 / 1.062 GB, free: 142.3 MB / 0.698 GB Notification: Performance of matching and sorting (n=89) (initialization): time 0.0009906/1.057, allocations: 0.6016 MB / 1.062 GB, free: 142.2 MB / 0.698 GB Notification: Performance of prepare postOptimizeDAE: time 1.961e-05/1.057, allocations: 5.594 kB / 1.062 GB, free: 142.2 MB / 0.698 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.093e-05/1.057, allocations: 3.453 kB / 1.062 GB, free: 142.2 MB / 0.698 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.063e-05/1.057, allocations: 5.656 kB / 1.062 GB, free: 142.2 MB / 0.698 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003454/1.057, allocations: 83.83 kB / 1.062 GB, free: 142.2 MB / 0.698 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.418e-05/1.057, allocations: 9.719 kB / 1.062 GB, free: 142.2 MB / 0.698 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003204/1.057, allocations: 53.25 kB / 1.062 GB, free: 142.2 MB / 0.698 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.926e-05/1.057, allocations: 29.94 kB / 1.062 GB, free: 142.2 MB / 0.698 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 10 * Number of states: 0 () * Number of discrete variables: 69 ($PRE.conSpePumSta.con1.enableFire,$PRE.conSpePumSta.con2.enableFire,$PRE.conSpePumSta.con3.enableFire,$PRE.conSpePumSta.con4.enableFire,$whenCondition6,$PRE.chiNumOn.combiTimeTable.nextTimeEvent,$whenCondition5,$PRE.cooMod.combiTimeTable.nextTimeEvent,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,conSpePumSta.cooMod,conSpePumSta.con1.enableFire,conSpePumSta.con1.fire,$PRE.conSpePumSta.con1.t_start,conSpePumSta.con1.t_start,conSpePumSta.con1.condition,$PRE.conSpePumSta.oneOn.localActive,conSpePumSta.oneOn.localActive,conSpePumSta.oneOn.inPort[2].occupied,conSpePumSta.oneOn.outPort[2].available,$PRE.conSpePumSta.oneOn.newActive,conSpePumSta.oneOn.newActive,$PRE.conSpePumSta.oneOn.oldActive,conSpePumSta.oneOn.oldActive,conSpePumSta.oneOn.active,$PRE.conSpePumSta.off.localActive,conSpePumSta.off.localActive,$PRE.conSpePumSta.off.newActive,conSpePumSta.off.newActive,$PRE.conSpePumSta.off.oldActive,conSpePumSta.off.oldActive,conSpePumSta.off.active,$PRE.conSpePumSta.twoOn.localActive,conSpePumSta.twoOn.localActive,$PRE.conSpePumSta.twoOn.newActive,conSpePumSta.twoOn.newActive,$PRE.conSpePumSta.twoOn.oldActive,conSpePumSta.twoOn.oldActive,conSpePumSta.twoOn.active,conSpePumSta.con2.enableFire,conSpePumSta.con2.fire,$PRE.conSpePumSta.con2.t_start,conSpePumSta.con2.t_start,conSpePumSta.con2.condition,conSpePumSta.con3.enableFire,conSpePumSta.con3.fire,$PRE.conSpePumSta.con3.t_start,conSpePumSta.con3.t_start,conSpePumSta.con3.condition,conSpePumSta.con4.enableFire,conSpePumSta.con4.fire,$PRE.conSpePumSta.con4.t_start,conSpePumSta.con4.t_start,conSpePumSta.con4.condition,conSpePumSta.stateGraphRoot.activeSteps,conSpePumSta.addInt.u1,conSpePumSta.addInt.u2,conSpePumSta.addInt.y,cooMod.combiTimeTable.nextTimeEvent,$PRE.cooMod.combiTimeTable.nextTimeEventScaled,cooMod.combiTimeTable.nextTimeEventScaled,chiNumOn.y,chiNumOn.combiTimeTable.nextTimeEvent,$PRE.chiNumOn.combiTimeTable.nextTimeEventScaled,chiNumOn.combiTimeTable.nextTimeEventScaled,conSpePumSta.stateGraphRoot.resume,conSpePumSta.stateGraphRoot.suspend) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (89): * Single equations (assignments): 89 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.0004373/1.058, allocations: 312 kB / 1.063 GB, free: 142.1 MB / 0.698 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 9.708e-05/1.058, allocations: 64.28 kB / 1.063 GB, free: 142 MB / 0.698 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001154/1.059, allocations: 0.6127 MB / 1.063 GB, free: 142 MB / 0.698 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.255e-06/1.059, allocations: 8.375 kB / 1.063 GB, free: 142 MB / 0.698 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 8.596e-06/1.059, allocations: 1.484 kB / 1.063 GB, free: 142 MB / 0.698 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.076e-05/1.059, allocations: 3.188 kB / 1.063 GB, free: 142 MB / 0.698 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002515/1.062, allocations: 1.491 MB / 1.065 GB, free: 141.7 MB / 0.698 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.219e-06/1.062, allocations: 0 / 1.065 GB, free: 141.7 MB / 0.698 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002573/1.062, allocations: 57.98 kB / 1.065 GB, free: 141.7 MB / 0.698 GB Notification: Performance of postOpt tearingSystem (simulation): time 9.138e-06/1.062, allocations: 3.562 kB / 1.065 GB, free: 141.7 MB / 0.698 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.481e-05/1.062, allocations: 18.53 kB / 1.065 GB, free: 141.7 MB / 0.698 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 7.774e-06/1.062, allocations: 3.453 kB / 1.065 GB, free: 141.7 MB / 0.698 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.346e-06/1.062, allocations: 7.609 kB / 1.065 GB, free: 141.6 MB / 0.698 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001318/1.063, allocations: 0.6551 MB / 1.066 GB, free: 141.5 MB / 0.698 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002441/1.064, allocations: 172.8 kB / 1.066 GB, free: 141.3 MB / 0.698 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 9.472e-05/1.064, allocations: 19.64 kB / 1.066 GB, free: 141.3 MB / 0.698 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0002798/1.064, allocations: 36.81 kB / 1.066 GB, free: 141.3 MB / 0.698 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000246/1.064, allocations: 91.19 kB / 1.066 GB, free: 141.3 MB / 0.698 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.928e-05/1.064, allocations: 22.75 kB / 1.066 GB, free: 141.3 MB / 0.698 GB Notification: Performance of sorting global known variables: time 0.0008032/1.065, allocations: 497.9 kB / 1.066 GB, free: 141.2 MB / 0.698 GB Notification: Performance of sort global known variables: time 1.142e-06/1.065, allocations: 0.9375 kB / 1.066 GB, free: 141.2 MB / 0.698 GB Notification: Performance of remove unused functions: time 0.0009119/1.066, allocations: 175 kB / 1.067 GB, free: 141.2 MB / 0.698 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 52 (conSpePumSta.con3.enableFire,conSpePumSta.con4.enableFire,conSpePumSta.con1.enableFire,conSpePumSta.con2.enableFire,conSpePumSta.twoOn.localActive,conSpePumSta.off.localActive,conSpePumSta.oneOn.localActive,$cse3,$cse4,$cse5,$cse6,$cse7,$cse8,$whenCondition6,$whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,conSpePumSta.cooMod,conSpePumSta.con1.fire,conSpePumSta.con1.t_start,conSpePumSta.con1.condition,conSpePumSta.oneOn.inPort[2].occupied,conSpePumSta.oneOn.outPort[2].available,conSpePumSta.oneOn.newActive,conSpePumSta.oneOn.oldActive,conSpePumSta.oneOn.active,conSpePumSta.off.newActive,conSpePumSta.off.oldActive,conSpePumSta.off.active,conSpePumSta.twoOn.newActive,conSpePumSta.twoOn.oldActive,conSpePumSta.twoOn.active,conSpePumSta.con2.fire,conSpePumSta.con2.t_start,conSpePumSta.con2.condition,conSpePumSta.con3.fire,conSpePumSta.con3.t_start,conSpePumSta.con3.condition,conSpePumSta.con4.fire,conSpePumSta.con4.t_start,conSpePumSta.con4.condition,conSpePumSta.stateGraphRoot.activeSteps,conSpePumSta.addInt.u1,conSpePumSta.addInt.u2,conSpePumSta.addInt.y,cooMod.combiTimeTable.nextTimeEvent,cooMod.combiTimeTable.nextTimeEventScaled,chiNumOn.y,chiNumOn.combiTimeTable.nextTimeEvent,chiNumOn.combiTimeTable.nextTimeEventScaled) * Number of discrete states: 7 (chiNumOn.combiTimeTable.nextTimeEvent,cooMod.combiTimeTable.nextTimeEvent,conSpePumSta.oneOn.newActive,conSpePumSta.off.newActive,conSpePumSta.twoOn.newActive,chiNumOn.combiTimeTable.nextTimeEventScaled,cooMod.combiTimeTable.nextTimeEventScaled) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (73): * Single equations (assignments): 62 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 11 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.003118/1.069, allocations: 1.84 MB / 1.068 GB, free: 140.4 MB / 0.698 GB Notification: Performance of simCode: created initialization part: time 0.00151/1.071, allocations: 0.5588 MB / 1.069 GB, free: 140.4 MB / 0.698 GB Notification: Performance of simCode: created event and clocks part: time 3.377e-06/1.071, allocations: 0 / 1.069 GB, free: 140.4 MB / 0.698 GB Notification: Performance of simCode: created simulation system equations: time 0.0006616/1.071, allocations: 285.1 kB / 1.069 GB, free: 140.4 MB / 0.698 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0007875/1.072, allocations: 122 kB / 1.069 GB, free: 140.4 MB / 0.698 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.008033/1.08, allocations: 5.189 MB / 1.074 GB, free: 137.8 MB / 0.698 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006125/1.081, allocations: 0.9554 MB / 1.075 GB, free: 137.1 MB / 0.698 GB Notification: Performance of simCode: alias equations: time 0.00055/1.082, allocations: 120.5 kB / 1.075 GB, free: 137.1 MB / 0.698 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004616/1.082, allocations: 268.1 kB / 1.076 GB, free: 137.1 MB / 0.698 GB Notification: Performance of SimCode: time 9.51e-07/1.082, allocations: 0 / 1.076 GB, free: 137.1 MB / 0.698 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.03454/1.117, allocations: 14.76 MB / 1.09 GB, free: 135.3 MB / 0.698 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0002074/1.117, allocations: 284.2 kB / 1.09 GB, free: 134.9 MB / 0.698 GB Notification: Performance of buildModelFMU: Generate platform static: time 2.401/3.518, allocations: 0 / 1.09 GB, free: 134.9 MB / 0.698 GB (rm -f Buildings_maint.7.0.x_Buildings.Applications.DataCenters.ChillerCooled.Controls.Validation.ConstantSpeedPumpStage.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.Applications.DataCenters.ChillerCooled.Controls.Validation.ConstantSpeedPumpStage.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.Applications.DataCenters.ChillerCooled.Controls.Validation.ConstantSpeedPumpStage.pipe >> ../files/Buildings_maint.7.0.x_Buildings.Applications.DataCenters.ChillerCooled.Controls.Validation.ConstantSpeedPumpStage.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator --tempDir=temp_Buildings_maint_7_0_x_Buildings_Applications_DataCenters_ChillerCooled_Controls_Validation_ConstantSpeedPumpStage_fmu --startTime=0 --stopTime=1440 --timeout=50 --tolerance=1e-06 Buildings_maint_7_0_x_Buildings_Applications_DataCenters_ChillerCooled_Controls_Validation_ConstantSpeedPumpStage.fmu > Buildings_maint.7.0.x_Buildings.Applications.DataCenters.ChillerCooled.Controls.Validation.ConstantSpeedPumpStage.pipe 2>&1)