Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_IDEAS.Fluid.HeatPumps.Validation.ScrollWaterToWater_Dynamic.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 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo", uses=false) Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo) Using package Modelica with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+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(IDEAS.Fluid.HeatPumps.Validation.ScrollWaterToWater_Dynamic,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.HeatPumps.Validation.ScrollWaterToWater_Dynamic") translateModel(IDEAS.Fluid.HeatPumps.Validation.ScrollWaterToWater_Dynamic,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.HeatPumps.Validation.ScrollWaterToWater_Dynamic") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001092/0.001092, allocations: 109 kB / 16.37 MB, free: 6.004 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001099/0.001099, allocations: 197.6 kB / 17.31 MB, free: 5.613 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.341/1.341, allocations: 222.9 MB / 241 MB, free: 15.16 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo): time 0.7767/0.7767, allocations: 132.2 MB / 423.3 MB, free: 6.582 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001173/0.001173, allocations: 59.91 kB / 0.5032 GB, free: 10.95 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.357/0.3581, allocations: 80.18 MB / 0.5815 GB, free: 27.56 MB / 446.1 MB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.HeatPumps.Validation.ScrollWaterToWater_Dynamic): time 0.1153/0.4735, allocations: 130.9 MB / 0.7093 GB, free: 10.97 MB / 0.545 GB Notification: Performance of NFInst.instExpressions: time 0.03588/0.5094, allocations: 24.95 MB / 0.7337 GB, free: 1.949 MB / 0.5606 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.008721/0.5181, allocations: 135.2 kB / 0.7338 GB, free: 1.816 MB / 0.5606 GB Notification: Performance of NFTyping.typeComponents: time 0.005742/0.524, allocations: 1.727 MB / 0.7355 GB, free: 80 kB / 0.5606 GB Notification: Performance of NFTyping.typeBindings: time 0.01395/0.538, allocations: 4.497 MB / 0.7399 GB, free: 11.57 MB / 0.5762 GB Notification: Performance of NFTyping.typeClassSections: time 0.01205/0.5501, allocations: 3.51 MB / 0.7433 GB, free: 8.098 MB / 0.5762 GB Notification: Performance of NFFlatten.flatten: time 0.3494/0.8995, allocations: 8.954 MB / 0.752 GB, free: 42.99 MB / 0.5762 GB Notification: Performance of NFFlatten.resolveConnections: time 0.00478/0.9043, allocations: 3.195 MB / 0.7552 GB, free: 42.69 MB / 0.5762 GB Notification: Performance of NFEvalConstants.evaluate: time 0.007477/0.9118, allocations: 3.444 MB / 0.7585 GB, free: 42.68 MB / 0.5762 GB Notification: Performance of NFSimplifyModel.simplify: time 0.005084/0.9169, allocations: 2.475 MB / 0.7609 GB, free: 42.43 MB / 0.5762 GB Notification: Performance of NFPackage.collectConstants: time 0.001226/0.9182, allocations: 389.5 kB / 0.7613 GB, free: 42.43 MB / 0.5762 GB Notification: Performance of NFFlatten.collectFunctions: time 0.007193/0.9254, allocations: 2.886 MB / 0.7641 GB, free: 42.43 MB / 0.5762 GB Notification: Performance of NFScalarize.scalarize: time 0.00125/0.9266, allocations: 0.886 MB / 0.765 GB, free: 42.3 MB / 0.5762 GB Notification: Performance of NFVerifyModel.verify: time 0.00295/0.9296, allocations: 1.989 MB / 0.7669 GB, free: 41.8 MB / 0.5762 GB Notification: Performance of NFConvertDAE.convert: time 0.008942/0.9385, allocations: 6.357 MB / 0.7731 GB, free: 41.21 MB / 0.5762 GB Notification: Performance of FrontEnd - DAE generated: time 4.869e-06/0.9386, allocations: 0 / 0.7731 GB, free: 41.21 MB / 0.5762 GB Notification: Performance of FrontEnd: time 1.352e-06/0.9386, allocations: 0 / 0.7731 GB, free: 41.21 MB / 0.5762 GB Notification: Performance of Transformations before backend: time 9.938e-05/0.9387, allocations: 0 / 0.7731 GB, free: 41.21 MB / 0.5762 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 579 * Number of variables: 579 Notification: Performance of Generate backend data structure: time 0.007508/0.9462, allocations: 4.071 MB / 0.7771 GB, free: 39.33 MB / 0.5762 GB Notification: Performance of prepare preOptimizeDAE: time 3.497e-05/0.9463, allocations: 7.938 kB / 0.7771 GB, free: 39.33 MB / 0.5762 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01045/0.9567, allocations: 1.376 MB / 0.7785 GB, free: 39.11 MB / 0.5762 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.006435/0.9632, allocations: 2.991 MB / 0.7814 GB, free: 38.48 MB / 0.5762 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.000221/0.9634, allocations: 255.8 kB / 0.7816 GB, free: 38.4 MB / 0.5762 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0005294/0.964, allocations: 244.6 kB / 0.7819 GB, free: 38.39 MB / 0.5762 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.007573/0.9715, allocations: 3.194 MB / 0.785 GB, free: 37.89 MB / 0.5762 GB Notification: Performance of preOpt findStateOrder (simulation): time 5.044e-05/0.9716, allocations: 7.828 kB / 0.785 GB, free: 37.89 MB / 0.5762 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0003104/0.9719, allocations: 98.41 kB / 0.7851 GB, free: 37.89 MB / 0.5762 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 6.8e-05/0.972, allocations: 72.92 kB / 0.7852 GB, free: 37.89 MB / 0.5762 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.009587/0.9816, allocations: 2.828 MB / 0.7879 GB, free: 37.83 MB / 0.5762 GB Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts. Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0176/0.9992, allocations: 13.59 MB / 0.8012 GB, free: 31.09 MB / 0.5762 GB Notification: Performance of preOpt comSubExp (simulation): time 0.003821/1.003, allocations: 1.48 MB / 0.8026 GB, free: 30.82 MB / 0.5762 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.002777/1.006, allocations: 0.9148 MB / 0.8035 GB, free: 30.66 MB / 0.5762 GB Notification: Performance of preOpt evalFunc (simulation): time 0.001378/1.007, allocations: 1.777 MB / 0.8053 GB, free: 28.63 MB / 0.5762 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.003338/1.011, allocations: 1.189 MB / 0.8064 GB, free: 28.15 MB / 0.5762 GB Notification: Performance of pre-optimization done (n=126): time 3.005e-06/1.011, allocations: 0 / 0.8064 GB, free: 28.15 MB / 0.5762 GB Notification: Performance of matching and sorting (n=132): time 0.04833/1.059, allocations: 11.65 MB / 0.8178 GB, free: 22.18 MB / 0.5762 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001181/1.059, allocations: 0.5783 MB / 0.8184 GB, free: 21.47 MB / 0.5762 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003408/1.063, allocations: 2.649 MB / 0.821 GB, free: 19.56 MB / 0.5762 GB Notification: Performance of collectPreVariables (initialization): time 0.0002962/1.063, allocations: 60.64 kB / 0.821 GB, free: 19.52 MB / 0.5762 GB Notification: Performance of collectInitialEqns (initialization): time 0.0008963/1.064, allocations: 1.32 MB / 0.8223 GB, free: 18.78 MB / 0.5762 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003707/1.064, allocations: 465.1 kB / 0.8227 GB, free: 18.39 MB / 0.5762 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0006492/1.065, allocations: 460.8 kB / 0.8232 GB, free: 18.08 MB / 0.5762 GB Notification: Performance of setup shared object (initialization): time 3.814e-05/1.065, allocations: 305.1 kB / 0.8235 GB, free: 17.78 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.003352/1.068, allocations: 0.9885 MB / 0.8244 GB, free: 17.07 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.003687/1.072, allocations: 1.581 MB / 0.826 GB, free: 15.6 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.006125/1.078, allocations: 2.251 MB / 0.8282 GB, free: 13.45 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.294e-06/1.078, allocations: 4 kB / 0.8282 GB, free: 13.45 MB / 0.5762 GB Notification: Performance of matching and sorting (n=225) (initialization): time 0.02028/1.098, allocations: 4.151 MB / 0.8322 GB, free: 9.348 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 5.148e-05/1.098, allocations: 41.7 kB / 0.8323 GB, free: 9.301 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.145e-05/1.098, allocations: 12 kB / 0.8323 GB, free: 9.289 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.003484/1.102, allocations: 1.149 MB / 0.8334 GB, free: 8.145 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002504/1.104, allocations: 459.2 kB / 0.8339 GB, free: 7.715 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003293/1.108, allocations: 2.386 MB / 0.8362 GB, free: 5.297 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004449/1.112, allocations: 295.9 kB / 0.8365 GB, free: 5.008 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003073/1.113, allocations: 107.9 kB / 0.8366 GB, free: 4.902 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.004125/1.117, allocations: 1.48 MB / 0.838 GB, free: 3.418 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.003489/1.12, allocations: 1.567 MB / 0.8395 GB, free: 1.625 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.006146/1.126, allocations: 2.217 MB / 0.8417 GB, free: 15.29 MB / 0.5919 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.071e-05/1.126, allocations: 4 kB / 0.8417 GB, free: 15.29 MB / 0.5919 GB Notification: Performance of matching and sorting (n=225) (initialization_lambda0): time 0.02204/1.148, allocations: 4.137 MB / 0.8458 GB, free: 11.2 MB / 0.5919 GB Notification: Performance of prepare postOptimizeDAE: time 4.672e-05/1.149, allocations: 37.7 kB / 0.8458 GB, free: 11.16 MB / 0.5919 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.937e-05/1.149, allocations: 12 kB / 0.8458 GB, free: 11.15 MB / 0.5919 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.003816/1.152, allocations: 1.166 MB / 0.8469 GB, free: 9.992 MB / 0.5919 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002579/1.155, allocations: 445.1 kB / 0.8474 GB, free: 9.578 MB / 0.5919 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.00401/1.159, allocations: 2.398 MB / 0.8497 GB, free: 7.145 MB / 0.5919 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.005067/1.164, allocations: 300 kB / 0.85 GB, free: 6.852 MB / 0.5919 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000297/1.164, allocations: 104.8 kB / 0.8501 GB, free: 6.75 MB / 0.5919 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 55 * Number of states: 0 () * Number of discrete variables: 10 (realToInteger.y,N.count,$PRE.N.count,N.T_start,$PRE.N.T_start,heaPum1.com.isOn,$PRE.heaPum1.com.isOn,heaPum.com.isOn,$PRE.heaPum.com.isOn,$whenCondition1) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (166): * Single equations (assignments): 163 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 2 systems {(4,25), (4,27)} Notification: Performance of prepare postOptimizeDAE: time 0.0006589/1.165, allocations: 301 kB / 0.8504 GB, free: 6.469 MB / 0.5919 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0007766/1.166, allocations: 280.6 kB / 0.8506 GB, free: 6.191 MB / 0.5919 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.008038/1.174, allocations: 2.407 MB / 0.853 GB, free: 3.789 MB / 0.5919 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.971e-05/1.174, allocations: 12 kB / 0.853 GB, free: 3.777 MB / 0.5919 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.254e-05/1.174, allocations: 4 kB / 0.853 GB, free: 3.773 MB / 0.5919 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.006719/1.181, allocations: 2.005 MB / 0.855 GB, free: 1.734 MB / 0.5919 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.02142/1.202, allocations: 7.033 MB / 0.8618 GB, free: 10.64 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.78e-05/1.202, allocations: 8 kB / 0.8618 GB, free: 10.63 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001813/1.204, allocations: 274.4 kB / 0.8621 GB, free: 10.37 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.003576/1.208, allocations: 1.018 MB / 0.8631 GB, free: 9.355 MB / 0.6075 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0002617/1.208, allocations: 51.95 kB / 0.8631 GB, free: 9.305 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.003526/1.211, allocations: 2.141 MB / 0.8652 GB, free: 7.117 MB / 0.6075 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 9.598e-06/1.212, allocations: 11.09 kB / 0.8653 GB, free: 7.109 MB / 0.6075 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01365/1.225, allocations: 3.751 MB / 0.8689 GB, free: 3.285 MB / 0.6075 GB Notification: Performance of postOpt removeConstants (simulation): time 0.002068/1.227, allocations: 0.5938 MB / 0.8695 GB, free: 2.672 MB / 0.6075 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000851/1.228, allocations: 39.98 kB / 0.8695 GB, free: 2.633 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.003449/1.232, allocations: 223.7 kB / 0.8697 GB, free: 2.414 MB / 0.6075 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002302/1.232, allocations: 108.4 kB / 0.8698 GB, free: 2.312 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001951/1.232, allocations: 83.58 kB / 0.8699 GB, free: 2.234 MB / 0.6075 GB Notification: Performance of sorting global known variables: time 0.003537/1.236, allocations: 1.859 MB / 0.8717 GB, free: 388 kB / 0.6075 GB Notification: Performance of sort global known variables: time 3.31e-07/1.236, allocations: 0 / 0.8717 GB, free: 388 kB / 0.6075 GB Notification: Performance of remove unused functions: time 0.005568/1.241, allocations: 1.496 MB / 0.8732 GB, free: 14.88 MB / 0.6231 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 31 * Number of states: 2 (heaPum1.con.vol.dynBal.U,heaPum1.eva.vol.dynBal.U) * Number of discrete variables: 6 ($whenCondition1,heaPum.com.isOn,heaPum1.com.isOn,N.T_start,N.count,realToInteger.y) * Number of discrete states: 3 (N.count,heaPum1.com.isOn,heaPum.com.isOn) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (82): * Single equations (assignments): 76 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 2 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 2 systems {(2,19), (4,25)} Notification: Performance of Backend phase and start with SimCode phase: time 0.00204/1.243, allocations: 0.8192 MB / 0.874 GB, free: 14.14 MB / 0.6231 GB Notification: Performance of simCode: created initialization part: time 0.01479/1.258, allocations: 3.75 MB / 0.8777 GB, free: 10.48 MB / 0.6231 GB Notification: Performance of simCode: created event and clocks part: time 1.762e-05/1.258, allocations: 448 / 0.8777 GB, free: 10.48 MB / 0.6231 GB Notification: Performance of simCode: created simulation system equations: time 0.004272/1.262, allocations: 1.096 MB / 0.8787 GB, free: 9.422 MB / 0.6231 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.007868/1.27, allocations: 1.58 MB / 0.8803 GB, free: 7.949 MB / 0.6231 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01123/1.282, allocations: 4.961 MB / 0.8851 GB, free: 2.926 MB / 0.6231 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.00132/1.283, allocations: 1.72 MB / 0.8868 GB, free: 1.18 MB / 0.6231 GB Notification: Performance of simCode: alias equations: time 0.003039/1.286, allocations: 0.6588 MB / 0.8874 GB, free: 0.5312 MB / 0.6231 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0006711/1.287, allocations: 235.3 kB / 0.8877 GB, free: 308 kB / 0.6231 GB Notification: Performance of SimCode: time 1.152e-06/1.287, allocations: 0 / 0.8877 GB, free: 308 kB / 0.6231 GB Notification: Performance of Templates: time 0.112/1.399, allocations: 74.06 MB / 0.96 GB, free: 7.332 MB / 0.7012 GB make -j1 -f IDEAS_IDEAS.Fluid.HeatPumps.Validation.ScrollWaterToWater_Dynamic.makefile (rm -f IDEAS_IDEAS.Fluid.HeatPumps.Validation.ScrollWaterToWater_Dynamic.pipe ; mkfifo IDEAS_IDEAS.Fluid.HeatPumps.Validation.ScrollWaterToWater_Dynamic.pipe ; head -c 1048576 < IDEAS_IDEAS.Fluid.HeatPumps.Validation.ScrollWaterToWater_Dynamic.pipe >> ../files/IDEAS_IDEAS.Fluid.HeatPumps.Validation.ScrollWaterToWater_Dynamic.sim & ./IDEAS_IDEAS.Fluid.HeatPumps.Validation.ScrollWaterToWater_Dynamic -abortSlowSimulation -alarm=480 -s cvode -lv LOG_STATS > IDEAS_IDEAS.Fluid.HeatPumps.Validation.ScrollWaterToWater_Dynamic.pipe 2>&1)