Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y.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/BuildSysPro 3.6.0/package.mo", uses=false) Using package BuildSysPro with version 3.5.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.6.0/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(BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y") translateModel(BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001123/0.001123, allocations: 104.4 kB / 16.41 MB, free: 6.484 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001169/0.001169, allocations: 193.5 kB / 17.34 MB, free: 5.766 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.37/1.37, allocations: 222.9 MB / 241 MB, free: 15.17 MB / 206.1 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.6.0/Building/BuildingEnvelope/HeatTransfer/package.mo:2:1-40:17:writable] Warning: Soil_case_nappe was referenced in the package.order file, but was not found in package.mo, Soil_case_nappe/package.mo or Soil_case_nappe.mo. Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.6.0/package.mo): time 0.9109/0.9109, allocations: 143.1 MB / 434.3 MB, free: 11.97 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001395/0.001395, allocations: 62.58 kB / 0.5962 GB, free: 12.31 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.165/0.1664, allocations: 82.03 MB / 0.6763 GB, free: 10.36 MB / 0.5137 GB Notification: Performance of NFInst.instantiate(BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y): time 0.4785/0.645, allocations: 75.18 MB / 0.7497 GB, free: 27.25 MB / 0.5762 GB Notification: Performance of NFInst.instExpressions: time 0.01997/0.665, allocations: 15.17 MB / 0.7645 GB, free: 27.07 MB / 0.5762 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0034/0.6684, allocations: 68.75 kB / 0.7646 GB, free: 27.07 MB / 0.5762 GB Notification: Performance of NFTyping.typeComponents: time 0.003068/0.6716, allocations: 0.8248 MB / 0.7654 GB, free: 27.05 MB / 0.5762 GB Notification: Performance of NFTyping.typeBindings: time 0.009634/0.6812, allocations: 2.596 MB / 0.7679 GB, free: 26.95 MB / 0.5762 GB Notification: Performance of NFTyping.typeClassSections: time 0.004602/0.6859, allocations: 1.394 MB / 0.7693 GB, free: 26.92 MB / 0.5762 GB Notification: Performance of NFFlatten.flatten: time 0.008519/0.6944, allocations: 4.406 MB / 0.7736 GB, free: 26.11 MB / 0.5762 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002843/0.6973, allocations: 1.443 MB / 0.775 GB, free: 25.44 MB / 0.5762 GB Notification: Performance of NFEvalConstants.evaluate: time 0.004839/0.7021, allocations: 1.642 MB / 0.7766 GB, free: 24.72 MB / 0.5762 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002725/0.7049, allocations: 1.207 MB / 0.7778 GB, free: 24.25 MB / 0.5762 GB Notification: Performance of NFPackage.collectConstants: time 0.0004395/0.7053, allocations: 165.7 kB / 0.7779 GB, free: 24.25 MB / 0.5762 GB Notification: Performance of NFFlatten.collectFunctions: time 0.00447/0.7098, allocations: 1.406 MB / 0.7793 GB, free: 23.81 MB / 0.5762 GB Notification: Performance of NFScalarize.scalarize: time 0.0005182/0.7104, allocations: 402.2 kB / 0.7797 GB, free: 23.57 MB / 0.5762 GB Notification: Performance of NFVerifyModel.verify: time 0.001809/0.7122, allocations: 0.9029 MB / 0.7806 GB, free: 23.01 MB / 0.5762 GB Notification: Performance of NFConvertDAE.convert: time 0.00615/0.7183, allocations: 3.014 MB / 0.7835 GB, free: 22.04 MB / 0.5762 GB Notification: Performance of FrontEnd - DAE generated: time 6.682e-06/0.7184, allocations: 1.031 kB / 0.7835 GB, free: 22.04 MB / 0.5762 GB Notification: Performance of FrontEnd: time 2.234e-06/0.7184, allocations: 0 / 0.7835 GB, free: 22.04 MB / 0.5762 GB Notification: Performance of Transformations before backend: time 4.83e-05/0.7184, allocations: 0 / 0.7835 GB, free: 22.04 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: 240 * Number of variables: 240 Notification: Performance of Generate backend data structure: time 0.004359/0.7228, allocations: 2.088 MB / 0.7856 GB, free: 20.68 MB / 0.5762 GB Notification: Performance of prepare preOptimizeDAE: time 4.892e-05/0.7229, allocations: 9 kB / 0.7856 GB, free: 20.68 MB / 0.5762 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0009407/0.7238, allocations: 226.2 kB / 0.7858 GB, free: 20.6 MB / 0.5762 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002579/0.7264, allocations: 1.529 MB / 0.7873 GB, free: 19.72 MB / 0.5762 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.855e-05/0.7265, allocations: 77.19 kB / 0.7874 GB, free: 19.68 MB / 0.5762 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001444/0.7266, allocations: 107.1 kB / 0.7875 GB, free: 19.65 MB / 0.5762 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002011/0.7287, allocations: 1.099 MB / 0.7885 GB, free: 19.16 MB / 0.5762 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.028e-05/0.7287, allocations: 1.344 kB / 0.7885 GB, free: 19.16 MB / 0.5762 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.628e-05/0.7288, allocations: 44.28 kB / 0.7886 GB, free: 19.12 MB / 0.5762 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.191e-05/0.7288, allocations: 31.77 kB / 0.7886 GB, free: 19.12 MB / 0.5762 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001893/0.7307, allocations: 0.8854 MB / 0.7895 GB, free: 18.82 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 0.005604/0.7364, allocations: 4.929 MB / 0.7943 GB, free: 14.73 MB / 0.5762 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001315/0.7377, allocations: 0.6178 MB / 0.7949 GB, free: 14.43 MB / 0.5762 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.000679/0.7384, allocations: 353.1 kB / 0.7952 GB, free: 14.25 MB / 0.5762 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0004785/0.7389, allocations: 0.8272 MB / 0.796 GB, free: 13.29 MB / 0.5762 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.258e-05/0.7389, allocations: 43.5 kB / 0.7961 GB, free: 13.24 MB / 0.5762 GB Notification: Performance of pre-optimization done (n=61): time 2.615e-06/0.7389, allocations: 0 / 0.7961 GB, free: 13.24 MB / 0.5762 GB Notification: Performance of matching and sorting (n=61): time 0.006951/0.7459, allocations: 1.688 MB / 0.7977 GB, free: 12.36 MB / 0.5762 GB Notification: Performance of inlineWhenForInitialization (initialization): time 2.868e-05/0.7459, allocations: 60.25 kB / 0.7978 GB, free: 12.29 MB / 0.5762 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001692/0.7476, allocations: 1.227 MB / 0.799 GB, free: 11.61 MB / 0.5762 GB Notification: Performance of collectPreVariables (initialization): time 0.000149/0.7478, allocations: 45.33 kB / 0.799 GB, free: 11.57 MB / 0.5762 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004014/0.7482, allocations: 0.6063 MB / 0.7996 GB, free: 11.03 MB / 0.5762 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001909/0.7484, allocations: 212.1 kB / 0.7998 GB, free: 10.85 MB / 0.5762 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002092/0.7486, allocations: 157.6 kB / 0.8 GB, free: 10.76 MB / 0.5762 GB Notification: Performance of setup shared object (initialization): time 6.745e-05/0.7487, allocations: 331.5 kB / 0.8003 GB, free: 10.43 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0006336/0.7493, allocations: 290.2 kB / 0.8006 GB, free: 10.29 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0007574/0.7501, allocations: 498.5 kB / 0.801 GB, free: 9.906 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.00129/0.7514, allocations: 0.7098 MB / 0.8017 GB, free: 9.461 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.6e-06/0.7514, allocations: 6.844 kB / 0.8017 GB, free: 9.457 MB / 0.5762 GB Notification: Performance of matching and sorting (n=88) (initialization): time 0.004436/0.7559, allocations: 1.272 MB / 0.803 GB, free: 8.828 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 2.296e-05/0.7559, allocations: 7.031 kB / 0.803 GB, free: 8.828 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.081e-05/0.7559, allocations: 4.656 kB / 0.803 GB, free: 8.828 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005778/0.7565, allocations: 142.5 kB / 0.8031 GB, free: 8.758 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005818/0.7571, allocations: 157.7 kB / 0.8033 GB, free: 8.719 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0006997/0.7578, allocations: 0.6946 MB / 0.8039 GB, free: 8.105 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001263/0.7591, allocations: 132.8 kB / 0.8041 GB, free: 8.016 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.55e-05/0.7592, allocations: 30.89 kB / 0.8041 GB, free: 8.008 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001026/0.7602, allocations: 0.547 MB / 0.8046 GB, free: 7.676 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0007311/0.7609, allocations: 0.4974 MB / 0.8051 GB, free: 7.285 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001252/0.7622, allocations: 0.6994 MB / 0.8058 GB, free: 6.848 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.995e-06/0.7622, allocations: 0.9062 kB / 0.8058 GB, free: 6.848 MB / 0.5762 GB Notification: Performance of matching and sorting (n=88) (initialization_lambda0): time 0.004362/0.7666, allocations: 1.268 MB / 0.807 GB, free: 6.215 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 1.592e-05/0.7666, allocations: 7.531 kB / 0.807 GB, free: 6.215 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.683e-06/0.7666, allocations: 2.812 kB / 0.8071 GB, free: 6.215 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004912/0.7671, allocations: 140.6 kB / 0.8072 GB, free: 6.148 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005784/0.7677, allocations: 151.4 kB / 0.8073 GB, free: 6.113 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0006749/0.7684, allocations: 0.717 MB / 0.808 GB, free: 5.48 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001271/0.7697, allocations: 97.45 kB / 0.8081 GB, free: 5.422 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.77e-05/0.7697, allocations: 32.2 kB / 0.8082 GB, free: 5.414 MB / 0.5762 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 16 * 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 (78): * Single equations (assignments): 77 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * 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): 1 system {(1,10)} Notification: Performance of prepare postOptimizeDAE: time 0.000235/0.77, allocations: 227 kB / 0.8084 GB, free: 5.199 MB / 0.5762 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002498/0.7702, allocations: 135.3 kB / 0.8085 GB, free: 5.129 MB / 0.5762 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004344/0.7746, allocations: 1.274 MB / 0.8097 GB, free: 4.418 MB / 0.5762 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.321e-05/0.7746, allocations: 7.375 kB / 0.8098 GB, free: 4.418 MB / 0.5762 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.169e-05/0.7747, allocations: 0 / 0.8098 GB, free: 4.418 MB / 0.5762 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.003699/0.7784, allocations: 1.098 MB / 0.8108 GB, free: 3.344 MB / 0.5762 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.006145/0.7845, allocations: 2.628 MB / 0.8134 GB, free: 0.6172 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 8.365e-06/0.7846, allocations: 8 kB / 0.8134 GB, free: 0.6094 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004415/0.785, allocations: 112.3 kB / 0.8135 GB, free: 0.5 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004424/0.7855, allocations: 128.7 kB / 0.8136 GB, free: 380 kB / 0.5762 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.514e-05/0.7855, allocations: 23.98 kB / 0.8136 GB, free: 356 kB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.004922/0.7905, allocations: 2.629 MB / 0.8162 GB, free: 13.57 MB / 0.5919 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.876e-06/0.7905, allocations: 4 kB / 0.8162 GB, free: 13.57 MB / 0.5919 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.005357/0.7958, allocations: 1.701 MB / 0.8179 GB, free: 11.8 MB / 0.5919 GB Notification: Performance of postOpt removeConstants (simulation): time 0.000831/0.7967, allocations: 311.1 kB / 0.8182 GB, free: 11.47 MB / 0.5919 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000195/0.7969, allocations: 16 kB / 0.8182 GB, free: 11.46 MB / 0.5919 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0007791/0.7977, allocations: 47.94 kB / 0.8182 GB, free: 11.41 MB / 0.5919 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001279/0.7978, allocations: 64.3 kB / 0.8183 GB, free: 11.35 MB / 0.5919 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.628e-05/0.7979, allocations: 31.98 kB / 0.8183 GB, free: 11.32 MB / 0.5919 GB Notification: Performance of sorting global known variables: time 0.001236/0.7991, allocations: 0.8818 MB / 0.8192 GB, free: 10.43 MB / 0.5919 GB Notification: Performance of sort global known variables: time 4.81e-07/0.7991, allocations: 0 / 0.8192 GB, free: 10.43 MB / 0.5919 GB Notification: Performance of remove unused functions: time 0.002104/0.8013, allocations: 0.7252 MB / 0.8199 GB, free: 9.707 MB / 0.5919 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 15 * Number of states: 2 (heaPum.con.vol.dynBal.U,heaPum.eva.vol.dynBal.U) * 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 (55): * Single equations (assignments): 50 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 4 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * 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): 1 system {(1,10)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001007/0.8023, allocations: 474.2 kB / 0.8204 GB, free: 9.273 MB / 0.5919 GB Notification: Performance of simCode: created initialization part: time 0.002682/0.805, allocations: 1.121 MB / 0.8214 GB, free: 8.156 MB / 0.5919 GB Notification: Performance of simCode: created event and clocks part: time 7.374e-06/0.805, allocations: 0 / 0.8214 GB, free: 8.156 MB / 0.5919 GB Notification: Performance of simCode: created simulation system equations: time 0.001464/0.8065, allocations: 0.5565 MB / 0.822 GB, free: 7.582 MB / 0.5919 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003642/0.8101, allocations: 0.8104 MB / 0.8228 GB, free: 6.797 MB / 0.5919 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003914/0.814, allocations: 2.3 MB / 0.825 GB, free: 4.434 MB / 0.5919 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0007355/0.8148, allocations: 1.172 MB / 0.8262 GB, free: 3.234 MB / 0.5919 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003327/0.8151, allocations: 107.4 kB / 0.8263 GB, free: 3.129 MB / 0.5919 GB Notification: Performance of SimCode: time 1.182e-06/0.8151, allocations: 0 / 0.8263 GB, free: 3.129 MB / 0.5919 GB Notification: Performance of Templates: time 0.04181/0.857, allocations: 31.48 MB / 0.857 GB, free: 3.871 MB / 0.6231 GB make -j1 -f BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y.makefile (rm -f BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y.pipe ; mkfifo BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y.pipe ; head -c 1048576 < BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y.pipe >> ../files/BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y.sim & ./BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y -abortSlowSimulation -alarm=480 -lv LOG_STATS > BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y.pipe 2>&1)