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") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.1-maint.8.0.x/package.mo): time 1.754/1.754, allocations: 288.3 MB / 303.2 MB, free: 8.117 MB / 234.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.001115/0.001114, allocations: 176.2 kB / 371.8 MB, free: 10.14 MB / 298.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.703/1.703, allocations: 205.4 MB / 0.6306 GB, free: 9.902 MB / 458.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.0008895/0.0008892, allocations: 95.22 kB / 0.7439 GB, free: 5.832 MB / 0.5573 GB Notification: Performance of FrontEnd - loaded program: time 0.0005323/0.0005324, allocations: 10.53 kB / 0.8668 GB, free: 142 MB / 0.6198 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2362/0.2367, allocations: 115.3 MB / 0.9794 GB, free: 27.72 MB / 0.6198 GB Notification: Performance of FrontEnd - scodeFlatten: time 0.731/0.9678, allocations: 151.7 MB / 1.128 GB, free: 16.4 MB / 0.6823 GB Notification: Performance of FrontEnd - mkProgramGraph: time 0.0002599/0.9681, allocations: 88.17 kB / 1.128 GB, free: 16.4 MB / 0.6823 GB Notification: Performance of FrontEnd - DAE generated: time 0.07195/1.04, allocations: 32.16 MB / 1.159 GB, free: 17.77 MB / 0.698 GB Notification: Performance of FrontEnd: time 1.924e-06/1.04, allocations: 4 kB / 1.159 GB, free: 17.77 MB / 0.698 GB Notification: Performance of Transformations before backend: time 7.938e-05/1.04, allocations: 28 kB / 1.159 GB, free: 17.74 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: 167 * Number of variables: 167 Notification: Performance of Generate backend data structure: time 0.00234/1.043, allocations: 1.61 MB / 1.161 GB, free: 16.15 MB / 0.698 GB Notification: Performance of prepare preOptimizeDAE: time 4.108e-05/1.043, allocations: 12.02 kB / 1.161 GB, free: 16.14 MB / 0.698 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0002131/1.043, allocations: 142.4 kB / 1.161 GB, free: 16 MB / 0.698 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001664/1.044, allocations: 0.8602 MB / 1.162 GB, free: 15.25 MB / 0.698 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.893e-05/1.045, allocations: 59.44 kB / 1.162 GB, free: 15.21 MB / 0.698 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001266/1.045, allocations: 81.56 kB / 1.162 GB, free: 15.15 MB / 0.698 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001211/1.046, allocations: 0.7628 MB / 1.163 GB, free: 14.57 MB / 0.698 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.654e-05/1.046, allocations: 3.953 kB / 1.163 GB, free: 14.57 MB / 0.698 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.501e-05/1.046, allocations: 32.67 kB / 1.163 GB, free: 14.55 MB / 0.698 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.544e-05/1.046, allocations: 20 kB / 1.163 GB, free: 14.54 MB / 0.698 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0009376/1.047, allocations: 0.5058 MB / 1.163 GB, free: 14.19 MB / 0.698 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.003644/1.051, allocations: 2.246 MB / 1.165 GB, free: 12.51 MB / 0.698 GB Notification: Performance of preOpt comSubExp (simulation): time 0.00156/1.052, allocations: 0.8041 MB / 1.166 GB, free: 11.89 MB / 0.698 GB Notification: Performance of preOpt evalFunc (simulation): time 4.6e-05/1.052, allocations: 8.656 kB / 1.166 GB, free: 11.88 MB / 0.698 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0008606/1.053, allocations: 483.9 kB / 1.167 GB, free: 11.5 MB / 0.698 GB Notification: Performance of pre-optimization done (n=83): time 4.148e-06/1.053, allocations: 0 / 1.167 GB, free: 11.5 MB / 0.698 GB Notification: Performance of matching and sorting (n=83): time 0.00209/1.055, allocations: 1.159 MB / 1.168 GB, free: 10.56 MB / 0.698 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001555/1.055, allocations: 302.6 kB / 1.168 GB, free: 10.2 MB / 0.698 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001145/1.057, allocations: 0.8113 MB / 1.169 GB, free: 9.57 MB / 0.698 GB Notification: Performance of collectPreVariables (initialization): time 0.0001091/1.057, allocations: 58.75 kB / 1.169 GB, free: 9.523 MB / 0.698 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003768/1.057, allocations: 484.2 kB / 1.169 GB, free: 9.258 MB / 0.698 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001897/1.057, allocations: 235.3 kB / 1.17 GB, free: 9.07 MB / 0.698 GB Notification: Performance of simplifyInitialFunctions (initialization): time 4.929e-05/1.057, allocations: 18.94 kB / 1.17 GB, free: 9.066 MB / 0.698 GB Notification: Performance of setup shared object (initialization): time 0.0001493/1.057, allocations: 338.4 kB / 1.17 GB, free: 8.746 MB / 0.698 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0005659/1.058, allocations: 288.1 kB / 1.17 GB, free: 8.551 MB / 0.698 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0008179/1.059, allocations: 0.5658 MB / 1.171 GB, free: 7.984 MB / 0.698 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0006566/1.06, allocations: 443.4 kB / 1.171 GB, free: 7.641 MB / 0.698 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.799e-06/1.06, allocations: 0 / 1.171 GB, free: 7.641 MB / 0.698 GB Notification: Performance of matching and sorting (n=117) (initialization): time 0.001958/1.062, allocations: 1.112 MB / 1.172 GB, free: 6.727 MB / 0.698 GB Notification: Performance of prepare postOptimizeDAE: time 0.0009458/1.062, allocations: 2.212 MB / 1.174 GB, free: 4.371 MB / 0.698 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.59e-05/1.063, allocations: 4 kB / 1.174 GB, free: 4.367 MB / 0.698 GB Notification: Performance of postOpt tearingSystem (initialization): time 4.146e-05/1.063, allocations: 12 kB / 1.174 GB, free: 4.355 MB / 0.698 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006142/1.063, allocations: 158.8 kB / 1.175 GB, free: 4.207 MB / 0.698 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.174e-05/1.063, allocations: 11.98 kB / 1.175 GB, free: 4.195 MB / 0.698 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0009462/1.064, allocations: 124 kB / 1.175 GB, free: 4.09 MB / 0.698 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 9.636e-05/1.064, allocations: 46.36 kB / 1.175 GB, free: 4.051 MB / 0.698 GB Notification: Performance of prepare postOptimizeDAE: time 1.673e-05/1.064, allocations: 4 kB / 1.175 GB, free: 4.047 MB / 0.698 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.001857/1.066, allocations: 0.9644 MB / 1.176 GB, free: 3.301 MB / 0.698 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.072e-05/1.066, allocations: 4 kB / 1.176 GB, free: 3.297 MB / 0.698 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.358e-05/1.066, allocations: 12 kB / 1.176 GB, free: 3.285 MB / 0.698 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005026/1.067, allocations: 145.7 kB / 1.176 GB, free: 3.152 MB / 0.698 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.876e-05/1.067, allocations: 27.86 kB / 1.176 GB, free: 3.125 MB / 0.698 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0008787/1.068, allocations: 105 kB / 1.176 GB, free: 3.035 MB / 0.698 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.169e-05/1.068, allocations: 42.67 kB / 1.176 GB, free: 3 MB / 0.698 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 () * Number of clocked 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 0.0009788/1.069, allocations: 404.3 kB / 1.176 GB, free: 2.664 MB / 0.698 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002478/1.069, allocations: 118.5 kB / 1.176 GB, free: 2.547 MB / 0.698 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001682/1.071, allocations: 0.928 MB / 1.177 GB, free: 1.859 MB / 0.698 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 9.638e-06/1.071, allocations: 8 kB / 1.177 GB, free: 1.852 MB / 0.698 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.993e-06/1.071, allocations: 7.953 kB / 1.177 GB, free: 1.844 MB / 0.698 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 9.428e-06/1.071, allocations: 3.984 kB / 1.177 GB, free: 1.84 MB / 0.698 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003202/1.074, allocations: 1.968 MB / 1.179 GB, free: 348 kB / 0.698 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.518e-06/1.074, allocations: 0 / 1.179 GB, free: 348 kB / 0.698 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003608/1.074, allocations: 95.45 kB / 1.179 GB, free: 256 kB / 0.698 GB Notification: Performance of postOpt tearingSystem (simulation): time 9.398e-06/1.074, allocations: 4 kB / 1.179 GB, free: 252 kB / 0.698 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.861e-05/1.074, allocations: 26.47 kB / 1.179 GB, free: 236 kB / 0.698 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 6.643e-06/1.074, allocations: 8 kB / 1.179 GB, free: 228 kB / 0.698 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.593e-06/1.074, allocations: 0 / 1.179 GB, free: 228 kB / 0.698 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002235/1.077, allocations: 1.345 MB / 1.181 GB, free: 15.2 MB / 0.7136 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004351/1.077, allocations: 291 kB / 1.181 GB, free: 14.95 MB / 0.7136 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001258/1.077, allocations: 26.61 kB / 1.181 GB, free: 14.93 MB / 0.7136 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0004347/1.078, allocations: 61.52 kB / 1.181 GB, free: 14.88 MB / 0.7136 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001665/1.078, allocations: 83.5 kB / 1.181 GB, free: 14.81 MB / 0.7136 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 8.828e-05/1.078, allocations: 39.47 kB / 1.181 GB, free: 14.78 MB / 0.7136 GB Notification: Performance of sorting global known variables: time 0.0007948/1.079, allocations: 0.6189 MB / 1.182 GB, free: 14.31 MB / 0.7136 GB Notification: Performance of sort global known variables: time 1.41e-07/1.079, allocations: 0 / 1.182 GB, free: 14.31 MB / 0.7136 GB Notification: Performance of remove unused functions: time 0.001274/1.08, allocations: 435.6 kB / 1.182 GB, free: 13.93 MB / 0.7136 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) * Number of clocked states: 0 () * 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 0.001185/1.081, allocations: 0.569 MB / 1.183 GB, free: 13.56 MB / 0.7136 GB Notification: Performance of simCode: created initialization part: time 0.002402/1.084, allocations: 1.576 MB / 1.184 GB, free: 12.17 MB / 0.7136 GB Notification: Performance of simCode: created event and clocks part: time 5.611e-06/1.084, allocations: 8.625 kB / 1.184 GB, free: 12.16 MB / 0.7136 GB Notification: Performance of simCode: created simulation system equations: time 0.0006451/1.084, allocations: 434.3 kB / 1.185 GB, free: 11.82 MB / 0.7136 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001139/1.085, allocations: 265.2 kB / 1.185 GB, free: 11.62 MB / 0.7136 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00292/1.088, allocations: 2.03 MB / 1.187 GB, free: 9.754 MB / 0.7136 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006346/1.089, allocations: 1.086 MB / 1.188 GB, free: 8.637 MB / 0.7136 GB Notification: Performance of simCode: alias equations: time 0.0007609/1.09, allocations: 216.5 kB / 1.188 GB, free: 8.422 MB / 0.7136 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002818/1.09, allocations: 117.4 kB / 1.188 GB, free: 8.316 MB / 0.7136 GB Notification: Performance of SimCode: time 5.11e-07/1.09, allocations: 0 / 1.188 GB, free: 8.316 MB / 0.7136 GB Notification: Performance of Templates: time 0.03024/1.12, allocations: 15.55 MB / 1.204 GB, free: 8.926 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)