Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.8.0.x_Buildings.Utilities.Plotters.Examples.ControlsVerification_CoolingCoilValve.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.1-maint.8.0.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 8.0.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.1-maint.8.0.x/package.mo) Running command: translateModel(Buildings.Utilities.Plotters.Examples.ControlsVerification_CoolingCoilValve,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.8.0.x_Buildings.Utilities.Plotters.Examples.ControlsVerification_CoolingCoilValve") translateModel(Buildings.Utilities.Plotters.Examples.ControlsVerification_CoolingCoilValve,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.8.0.x_Buildings.Utilities.Plotters.Examples.ControlsVerification_CoolingCoilValve") [:1:1-1:32:writable] Error: Class GC_set_max_heap_size not found in scope (looking for a function or record). Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.1-maint.8.0.x/package.mo): time 1.348/1.348, allocations: 285.5 MB / 292.8 MB, free: 9.895 MB / 234.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.001001/0.001001, allocations: 189.3 kB / 361.1 MB, free: 404 kB / 282.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.028/1.028, allocations: 205.1 MB / 0.6195 GB, free: 2.949 MB / 442.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.0007478/0.0007479, allocations: 81.27 kB / 0.7326 GB, free: 1.141 MB / 0.5417 GB Notification: Performance of FrontEnd - loaded program: time 5.811e-06/5.821e-06, allocations: 1.156 kB / 0.8511 GB, free: 151.7 MB / 0.6355 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1643/0.1643, allocations: 115.3 MB / 0.9637 GB, free: 56.43 MB / 0.6355 GB Notification: Performance of FrontEnd - scodeFlatten: time 0.4773/0.6416, allocations: 151 MB / 1.111 GB, free: 24.26 MB / 0.7136 GB Notification: Performance of FrontEnd - mkProgramGraph: time 0.0001956/0.6418, allocations: 82.19 kB / 1.111 GB, free: 24.26 MB / 0.7136 GB Notification: Performance of FrontEnd: time 0.07865/0.7205, allocations: 34.15 MB / 1.145 GB, free: 22.23 MB / 0.7136 GB Notification: Performance of Transformations before backend: time 6.908e-05/0.7206, allocations: 30.98 kB / 1.145 GB, free: 22.23 MB / 0.7136 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 167 * Number of variables: 167 Notification: Performance of Generate backend data structure: time 0.001882/0.7225, allocations: 1.446 MB / 1.146 GB, free: 21.3 MB / 0.7136 GB Notification: Performance of prepare preOptimizeDAE: time 2.997e-05/0.7225, allocations: 11.66 kB / 1.146 GB, free: 21.3 MB / 0.7136 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.000207/0.7228, allocations: 143.6 kB / 1.146 GB, free: 21.23 MB / 0.7136 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001665/0.7244, allocations: 0.8681 MB / 1.147 GB, free: 20.87 MB / 0.7136 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.523e-05/0.7245, allocations: 25.42 kB / 1.147 GB, free: 20.87 MB / 0.7136 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001042/0.7246, allocations: 62.42 kB / 1.147 GB, free: 20.86 MB / 0.7136 GB Notification: Performance of preOpt removeEqualFunctionCalls (simulation): time 0.0007012/0.7253, allocations: 433.4 kB / 1.147 GB, free: 20.86 MB / 0.7136 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0009076/0.7262, allocations: 0.6475 MB / 1.148 GB, free: 20.73 MB / 0.7136 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.748e-05/0.7262, allocations: 0 / 1.148 GB, free: 20.73 MB / 0.7136 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.756e-05/0.7263, allocations: 10.05 kB / 1.148 GB, free: 20.73 MB / 0.7136 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.175e-05/0.7263, allocations: 15.53 kB / 1.148 GB, free: 20.73 MB / 0.7136 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.003161/0.7295, allocations: 2.106 MB / 1.15 GB, free: 20.26 MB / 0.7136 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0008837/0.7304, allocations: 0.6521 MB / 1.151 GB, free: 20.13 MB / 0.7136 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003304/0.7307, allocations: 256.2 kB / 1.151 GB, free: 20.11 MB / 0.7136 GB Notification: Performance of preOpt evalFunc (simulation): time 4.844e-05/0.7308, allocations: 15.89 kB / 1.151 GB, free: 20.11 MB / 0.7136 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0004983/0.7313, allocations: 401.3 kB / 1.151 GB, free: 20.02 MB / 0.7136 GB Notification: Performance of pre-optimization done (n=83): time 2.064e-06/0.7313, allocations: 0 / 1.151 GB, free: 20.02 MB / 0.7136 GB Notification: Performance of matching and sorting (n=83): time 0.0009273/0.7322, allocations: 0.6193 MB / 1.152 GB, free: 19.91 MB / 0.7136 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.936e-05/0.7323, allocations: 306 kB / 1.152 GB, free: 19.56 MB / 0.7136 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.000754/0.7331, allocations: 0.7465 MB / 1.153 GB, free: 19.4 MB / 0.7136 GB Notification: Performance of collectPreVariables (initialization): time 7.726e-05/0.7332, allocations: 37.84 kB / 1.153 GB, free: 19.37 MB / 0.7136 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001725/0.7333, allocations: 312.1 kB / 1.153 GB, free: 19.17 MB / 0.7136 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001186/0.7335, allocations: 216.3 kB / 1.154 GB, free: 19.02 MB / 0.7136 GB Notification: Performance of simplifyInitialFunctions (initialization): time 4.164e-05/0.7335, allocations: 3.875 kB / 1.154 GB, free: 19.02 MB / 0.7136 GB Notification: Performance of setup shared object (initialization): time 0.000125/0.7336, allocations: 343.7 kB / 1.154 GB, free: 34.7 MB / 0.7292 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003538/0.734, allocations: 233.9 kB / 1.154 GB, free: 34.68 MB / 0.7292 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004733/0.7345, allocations: 0.5055 MB / 1.155 GB, free: 34.34 MB / 0.7292 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0003997/0.7349, allocations: 286.9 kB / 1.155 GB, free: 34.28 MB / 0.7292 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.138e-06/0.7349, allocations: 3.875 kB / 1.155 GB, free: 34.28 MB / 0.7292 GB Notification: Performance of matching and sorting (n=117) (initialization): time 0.001106/0.736, allocations: 0.7945 MB / 1.156 GB, free: 34.07 MB / 0.7292 GB Notification: Performance of prepare postOptimizeDAE: time 0.0006428/0.7367, allocations: 2.097 MB / 1.158 GB, free: 31.87 MB / 0.7292 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.278e-06/0.7367, allocations: 7.844 kB / 1.158 GB, free: 31.87 MB / 0.7292 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.947e-05/0.7367, allocations: 11.44 kB / 1.158 GB, free: 31.87 MB / 0.7292 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005253/0.7372, allocations: 168.5 kB / 1.158 GB, free: 31.83 MB / 0.7292 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.316e-05/0.7372, allocations: 7.844 kB / 1.158 GB, free: 31.83 MB / 0.7292 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0006061/0.7379, allocations: 101.7 kB / 1.158 GB, free: 31.78 MB / 0.7292 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.651e-05/0.7379, allocations: 45.73 kB / 1.158 GB, free: 31.77 MB / 0.7292 GB Notification: Performance of prepare postOptimizeDAE: time 4.929e-06/0.7379, allocations: 3.844 kB / 1.158 GB, free: 31.77 MB / 0.7292 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.0009327/0.7389, allocations: 0.6517 MB / 1.159 GB, free: 31.66 MB / 0.7292 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.47e-06/0.7389, allocations: 3.812 kB / 1.159 GB, free: 31.66 MB / 0.7292 GB Notification: Performance of postOpt tearingSystem (initialization): time 8.947e-06/0.7389, allocations: 11.72 kB / 1.159 GB, free: 31.66 MB / 0.7292 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004658/0.7394, allocations: 147.8 kB / 1.159 GB, free: 31.63 MB / 0.7292 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 8.265e-06/0.7394, allocations: 15.61 kB / 1.159 GB, free: 31.62 MB / 0.7292 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005469/0.7399, allocations: 97.77 kB / 1.159 GB, free: 31.57 MB / 0.7292 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.716e-05/0.74, allocations: 42.52 kB / 1.159 GB, free: 31.57 MB / 0.7292 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 24 * Number of states: 0 () * Number of discrete variables: 67 ($PRE.timSerRes.timeConverted,timSerRes.timeConverted,$PRE.timSerInp.timeConverted,timSerInp.timeConverted,$PRE.csvWriter.str,csvWriter.str,$whenCondition10,$PRE.TOut_F.nextTimeEvent,$whenCondition9,$PRE.TSupSetpoint_F.nextTimeEvent,$whenCondition8,$PRE.coolingValveSignal.nextTimeEvent,$whenCondition7,$PRE.fanFeedback.nextTimeEvent,$whenCondition6,$PRE.fanStatus.nextTimeEvent,$whenCondition5,$PRE.TSupply_F.nextTimeEvent,$whenCondition12,$whenCondition4,$whenCondition3,$whenCondition2,$PRE.plotConfiguration.tActivateLast,plotConfiguration.tActivateLast,correlation.active,$PRE.correlation.tActivateLast,correlation.tActivateLast,correlation.sampleTrigger,timSerRes.active,$PRE.timSerRes.tActivateLast,timSerRes.tActivateLast,timSerRes.sampleTrigger,timSerInp.active,timSerInp.activate_internal,$PRE.timSerInp.tActivateLast,timSerInp.tActivateLast,timSerInp.sampleTrigger,$whenCondition1,csvWriter.sampleTrigger,coolingValveSignal.nextTimeEvent,$PRE.coolingValveSignal.nextTimeEventScaled,coolingValveSignal.nextTimeEventScaled,$whenCondition11,TOut_F.nextTimeEvent,$PRE.TOut_F.nextTimeEventScaled,TOut_F.nextTimeEventScaled,TSupSetpoint_F.nextTimeEvent,$PRE.TSupSetpoint_F.nextTimeEventScaled,TSupSetpoint_F.nextTimeEventScaled,fanFeedback.nextTimeEvent,$PRE.fanFeedback.nextTimeEventScaled,fanFeedback.nextTimeEventScaled,fanStatus.nextTimeEvent,$PRE.fanStatus.nextTimeEventScaled,fanStatus.nextTimeEventScaled,TSupply_F.nextTimeEvent,$PRE.TSupply_F.nextTimeEventScaled,TSupply_F.nextTimeEventScaled,cooValSta.uFanSta,cooValSta.limPI.trigger,$PRE.cooValSta.TOutThr.y,cooValSta.TOutThr.y,$PRE.cooValSta.uFanFeeThr.y,cooValSta.uFanFeeThr.y,$PRE.cooValSta.cha.u,cooValSta.cha.u,plotConfiguration.activate_internal) * Number of discrete states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (117): * Single equations (assignments): 113 * Array equations: 0 * Algorithm blocks: 4 * 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 0.0002132/0.7402, allocations: 194.8 kB / 1.159 GB, free: 31.4 MB / 0.7292 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000122/0.7404, allocations: 117.2 kB / 1.159 GB, free: 31.34 MB / 0.7292 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001025/0.7414, allocations: 0.6997 MB / 1.16 GB, free: 31.16 MB / 0.7292 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.644e-06/0.7414, allocations: 7.75 kB / 1.16 GB, free: 31.16 MB / 0.7292 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.99e-06/0.7414, allocations: 128 / 1.16 GB, free: 31.16 MB / 0.7292 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 9.497e-06/0.7414, allocations: 7.984 kB / 1.16 GB, free: 31.16 MB / 0.7292 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.00212/0.7436, allocations: 1.658 MB / 1.162 GB, free: 30.5 MB / 0.7292 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.475e-06/0.7436, allocations: 0 / 1.162 GB, free: 30.5 MB / 0.7292 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003403/0.7439, allocations: 89.23 kB / 1.162 GB, free: 30.48 MB / 0.7292 GB Notification: Performance of postOpt tearingSystem (simulation): time 5.721e-06/0.744, allocations: 3.875 kB / 1.162 GB, free: 30.48 MB / 0.7292 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.298e-05/0.744, allocations: 18.86 kB / 1.162 GB, free: 30.47 MB / 0.7292 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 3.357e-06/0.744, allocations: 3.875 kB / 1.162 GB, free: 30.47 MB / 0.7292 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.873e-06/0.744, allocations: 0 / 1.162 GB, free: 30.47 MB / 0.7292 GB Notification: Performance of postOpt detectJacobianSparsePattern (simulation): time 0.001303/0.7453, allocations: 1.097 MB / 1.163 GB, free: 30.18 MB / 0.7292 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0003293/0.7457, allocations: 286.7 kB / 1.163 GB, free: 29.98 MB / 0.7292 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001425/0.7458, allocations: 15.45 kB / 1.163 GB, free: 29.97 MB / 0.7292 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0004468/0.7463, allocations: 50.86 kB / 1.163 GB, free: 29.96 MB / 0.7292 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001399/0.7464, allocations: 82.59 kB / 1.163 GB, free: 29.92 MB / 0.7292 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.808e-05/0.7465, allocations: 35.06 kB / 1.163 GB, free: 29.91 MB / 0.7292 GB Notification: Performance of sort global known variables: time 0.0005528/0.7471, allocations: 0.551 MB / 1.164 GB, free: 29.76 MB / 0.7292 GB Notification: Performance of remove unused functions: time 0.0009966/0.7481, allocations: 388.6 kB / 1.164 GB, free: 29.69 MB / 0.7292 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 1 (cooValSta.limPI.I.y) * Number of discrete variables: 44 (cooValSta.limPI.trigger,correlation.sampleTrigger,timSerRes.sampleTrigger,timSerInp.sampleTrigger,timSerInp.activate_internal,$whenCondition12,$whenCondition11,$whenCondition10,$whenCondition9,$whenCondition8,$whenCondition7,$whenCondition6,$whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,TOut_F.nextTimeEvent,TOut_F.nextTimeEventScaled,TSupSetpoint_F.nextTimeEvent,TSupSetpoint_F.nextTimeEventScaled,coolingValveSignal.nextTimeEvent,coolingValveSignal.nextTimeEventScaled,fanFeedback.nextTimeEvent,fanFeedback.nextTimeEventScaled,fanStatus.nextTimeEvent,fanStatus.nextTimeEventScaled,TSupply_F.nextTimeEvent,TSupply_F.nextTimeEventScaled,cooValSta.uFanSta,cooValSta.TOutThr.y,cooValSta.uFanFeeThr.y,cooValSta.cha.u,csvWriter.str,csvWriter.sampleTrigger,plotConfiguration.tActivateLast,correlation.active,correlation.tActivateLast,timSerRes.active,timSerRes.tActivateLast,timSerRes.timeConverted,timSerInp.active,timSerInp.tActivateLast,timSerInp.timeConverted) * Number of discrete states: 17 (TOut_F.nextTimeEvent,TSupSetpoint_F.nextTimeEvent,coolingValveSignal.nextTimeEvent,fanFeedback.nextTimeEvent,fanStatus.nextTimeEvent,TSupply_F.nextTimeEvent,TSupply_F.nextTimeEventScaled,fanStatus.nextTimeEventScaled,fanFeedback.nextTimeEventScaled,cooValSta.uFanFeeThr.y,coolingValveSignal.nextTimeEventScaled,TSupSetpoint_F.nextTimeEventScaled,TOut_F.nextTimeEventScaled,cooValSta.TOutThr.y,cooValSta.cha.u,csvWriter.str,$whenCondition1) * Top-level inputs: 0 Notification: Strong component statistics for simulation (89): * Single equations (assignments): 70 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 18 * 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 0.0007566/0.7488, allocations: 451.6 kB / 1.165 GB, free: 29.45 MB / 0.7292 GB Notification: Performance of simCode: created initialization part: time 0.001475/0.7503, allocations: 1.258 MB / 1.166 GB, free: 29.08 MB / 0.7292 GB Notification: Performance of simCode: created event and clocks part: time 3.066e-06/0.7503, allocations: 4.781 kB / 1.166 GB, free: 29.08 MB / 0.7292 GB Notification: Performance of simCode: created simulation system equations: time 0.0003972/0.7507, allocations: 362.2 kB / 1.166 GB, free: 29.02 MB / 0.7292 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001073/0.7518, allocations: 253.4 kB / 1.166 GB, free: 28.95 MB / 0.7292 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002322/0.7542, allocations: 1.286 MB / 1.168 GB, free: 28.45 MB / 0.7292 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0009065/0.7551, allocations: 1.21 MB / 1.169 GB, free: 27.55 MB / 0.7292 GB Notification: Performance of SimCode: time 2.8e-07/0.7551, allocations: 7.938 kB / 1.169 GB, free: 27.54 MB / 0.7292 GB Notification: Performance of Templates: time 0.03088/0.786, allocations: 19.64 MB / 1.188 GB, free: 17.91 MB / 0.7292 GB make -j1 -f Buildings_maint.8.0.x_Buildings.Utilities.Plotters.Examples.ControlsVerification_CoolingCoilValve.makefile (rm -f Buildings_maint.8.0.x_Buildings.Utilities.Plotters.Examples.ControlsVerification_CoolingCoilValve.pipe ; mkfifo Buildings_maint.8.0.x_Buildings.Utilities.Plotters.Examples.ControlsVerification_CoolingCoilValve.pipe ; head -c 1048576 < Buildings_maint.8.0.x_Buildings.Utilities.Plotters.Examples.ControlsVerification_CoolingCoilValve.pipe >> ../files/Buildings_maint.8.0.x_Buildings.Utilities.Plotters.Examples.ControlsVerification_CoolingCoilValve.sim & ./Buildings_maint.8.0.x_Buildings.Utilities.Plotters.Examples.ControlsVerification_CoolingCoilValve -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.8.0.x_Buildings.Utilities.Plotters.Examples.ControlsVerification_CoolingCoilValve.pipe 2>&1)