Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_8_Buildings.Controls.OBC.CDL.Continuous.Validation.PID.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 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo", uses=false) Using package Buildings with version 8.1.4 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/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 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: "" <> buildModelFMU(Buildings.Controls.OBC.CDL.Continuous.Validation.PID,fileNamePrefix="Buildings_8_Buildings_Controls_OBC_CDL_Continuous_Validation_PID",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Controls.OBC.CDL.Continuous.Validation.PID,fileNamePrefix="Buildings_8_Buildings_Controls_OBC_CDL_Continuous_Validation_PID",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001369/0.001369, allocations: 109.4 kB / 15.69 MB, free: 128 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001392/0.001392, allocations: 187.7 kB / 16.62 MB, free: 6.582 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.539/1.539, allocations: 205.1 MB / 222.5 MB, free: 4.504 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo): time 1.762/1.762, allocations: 292.3 MB / 0.549 GB, free: 12.73 MB / 462.1 MB Notification: Modelica requested package Complex of version 3.2.3. Complex 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Modelica requested package ModelicaServices of version 3.2.3. ModelicaServices 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.001658/0.001658, allocations: 72.14 kB / 0.6718 GB, free: 26.11 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2402/0.2418, allocations: 114.5 MB / 0.7836 GB, free: 13.25 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Controls.OBC.CDL.Continuous.Validation.PID): time 0.004921/0.2468, allocations: 3.586 MB / 0.7871 GB, free: 9.648 MB / 0.6075 GB Notification: Performance of NFInst.instExpressions: time 0.003633/0.2505, allocations: 2.112 MB / 0.7892 GB, free: 7.52 MB / 0.6075 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0006983/0.2512, allocations: 19.94 kB / 0.7892 GB, free: 7.5 MB / 0.6075 GB Notification: Performance of NFTyping.typeComponents: time 0.0004466/0.2517, allocations: 166.1 kB / 0.7894 GB, free: 7.336 MB / 0.6075 GB Notification: Performance of NFTyping.typeBindings: time 0.0006255/0.2524, allocations: 169.5 kB / 0.7895 GB, free: 7.172 MB / 0.6075 GB Notification: Performance of NFTyping.typeClassSections: time 0.001061/0.2535, allocations: 494.3 kB / 0.79 GB, free: 6.691 MB / 0.6075 GB Notification: Performance of NFFlatten.flatten: time 0.001257/0.2547, allocations: 1.248 MB / 0.7912 GB, free: 5.438 MB / 0.6075 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0008553/0.2556, allocations: 0.5676 MB / 0.7918 GB, free: 4.848 MB / 0.6075 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0004786/0.2561, allocations: 442.2 kB / 0.7922 GB, free: 4.414 MB / 0.6075 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0004447/0.2565, allocations: 481.5 kB / 0.7927 GB, free: 3.941 MB / 0.6075 GB Notification: Performance of NFPackage.collectConstants: time 0.0001719/0.2567, allocations: 124 kB / 0.7928 GB, free: 3.82 MB / 0.6075 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0002024/0.2569, allocations: 143.9 kB / 0.7929 GB, free: 3.68 MB / 0.6075 GB Notification: Performance of NFScalarize.scalarize: time 0.0001717/0.2571, allocations: 255.1 kB / 0.7932 GB, free: 3.43 MB / 0.6075 GB Notification: Performance of NFVerifyModel.verify: time 0.0003623/0.2575, allocations: 0.4972 MB / 0.7937 GB, free: 2.93 MB / 0.6075 GB Notification: Performance of NFConvertDAE.convert: time 0.001247/0.2587, allocations: 1.444 MB / 0.7951 GB, free: 1.48 MB / 0.6075 GB Notification: Performance of FrontEnd - DAE generated: time 7.705e-06/0.2588, allocations: 0 / 0.7951 GB, free: 1.48 MB / 0.6075 GB Notification: Performance of FrontEnd: time 1.893e-06/0.2588, allocations: 3.938 kB / 0.7951 GB, free: 1.477 MB / 0.6075 GB Notification: Performance of Transformations before backend: time 2.274e-05/0.2588, allocations: 0 / 0.7951 GB, free: 1.477 MB / 0.6075 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 203 * Number of variables: 203 Notification: Performance of Generate backend data structure: time 0.002627/0.2614, allocations: 1.398 MB / 0.7964 GB, free: 16 kB / 0.6075 GB Notification: Performance of prepare preOptimizeDAE: time 4.966e-05/0.2615, allocations: 12.03 kB / 0.7965 GB, free: 4 kB / 0.6075 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001534/0.2616, allocations: 127.2 kB / 0.7966 GB, free: 15.87 MB / 0.6231 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0002081/0.2619, allocations: 119.5 kB / 0.7967 GB, free: 15.75 MB / 0.6231 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001039/0.2629, allocations: 0.6656 MB / 0.7973 GB, free: 15.05 MB / 0.6231 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.114e-05/0.263, allocations: 62.38 kB / 0.7974 GB, free: 14.98 MB / 0.6231 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001087/0.2631, allocations: 84.38 kB / 0.7975 GB, free: 14.9 MB / 0.6231 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.00136/0.2645, allocations: 0.8172 MB / 0.7983 GB, free: 14.06 MB / 0.6231 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.017e-05/0.2645, allocations: 3.938 kB / 0.7983 GB, free: 14.06 MB / 0.6231 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.34e-05/0.2646, allocations: 32 kB / 0.7983 GB, free: 14.03 MB / 0.6231 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.892e-05/0.2646, allocations: 20 kB / 0.7983 GB, free: 14.01 MB / 0.6231 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001234/0.2658, allocations: 0.6128 MB / 0.7989 GB, free: 13.39 MB / 0.6231 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.004042/0.2699, allocations: 2.781 MB / 0.8016 GB, free: 10.52 MB / 0.6231 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001368/0.2713, allocations: 0.6508 MB / 0.8023 GB, free: 9.855 MB / 0.6231 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005784/0.2719, allocations: 345.7 kB / 0.8026 GB, free: 9.516 MB / 0.6231 GB Notification: Performance of preOpt evalFunc (simulation): time 4.544e-05/0.272, allocations: 8.5 kB / 0.8026 GB, free: 9.508 MB / 0.6231 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0006124/0.2726, allocations: 319.7 kB / 0.8029 GB, free: 9.184 MB / 0.6231 GB Notification: Performance of pre-optimization done (n=59): time 3.136e-06/0.2726, allocations: 4 kB / 0.8029 GB, free: 9.18 MB / 0.6231 GB Notification: Performance of matching and sorting (n=59): time 0.001677/0.2743, allocations: 0.7634 MB / 0.8037 GB, free: 8.41 MB / 0.6231 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001534/0.2745, allocations: 188.5 kB / 0.8038 GB, free: 8.18 MB / 0.6231 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001027/0.2755, allocations: 0.7116 MB / 0.8045 GB, free: 7.457 MB / 0.6231 GB Notification: Performance of collectPreVariables (initialization): time 0.0001039/0.2756, allocations: 45.7 kB / 0.8046 GB, free: 7.406 MB / 0.6231 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003815/0.276, allocations: 447.7 kB / 0.805 GB, free: 6.961 MB / 0.6231 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001768/0.2762, allocations: 209 kB / 0.8052 GB, free: 6.754 MB / 0.6231 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002244/0.2764, allocations: 134.2 kB / 0.8053 GB, free: 6.617 MB / 0.6231 GB Notification: Performance of setup shared object (initialization): time 0.0001213/0.2766, allocations: 341.9 kB / 0.8057 GB, free: 6.277 MB / 0.6231 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0006104/0.2772, allocations: 259.7 kB / 0.8059 GB, free: 6.02 MB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0006625/0.2778, allocations: 448.8 kB / 0.8063 GB, free: 5.508 MB / 0.6231 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001072/0.2789, allocations: 0.6143 MB / 0.8069 GB, free: 4.848 MB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.322e-06/0.2789, allocations: 4 kB / 0.8069 GB, free: 4.844 MB / 0.6231 GB Notification: Performance of matching and sorting (n=83) (initialization): time 0.00158/0.2805, allocations: 0.8134 MB / 0.8077 GB, free: 4.02 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 8.12e-05/0.2806, allocations: 41.69 kB / 0.8078 GB, free: 3.973 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.327e-06/0.2806, allocations: 0 / 0.8078 GB, free: 3.973 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.283e-05/0.2807, allocations: 8 kB / 0.8078 GB, free: 3.965 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005764/0.2813, allocations: 148.2 kB / 0.8079 GB, free: 3.82 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.635e-05/0.2813, allocations: 8 kB / 0.8079 GB, free: 3.812 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0006753/0.282, allocations: 127.2 kB / 0.8081 GB, free: 3.688 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.619e-05/0.282, allocations: 24 kB / 0.8081 GB, free: 3.664 MB / 0.6231 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0005888/0.2826, allocations: 365.7 kB / 0.8084 GB, free: 3.305 MB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0004592/0.2831, allocations: 388.8 kB / 0.8088 GB, free: 2.859 MB / 0.6231 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0006788/0.2838, allocations: 0.5207 MB / 0.8093 GB, free: 2.289 MB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.707e-06/0.2838, allocations: 0 / 0.8093 GB, free: 2.289 MB / 0.6231 GB Notification: Performance of matching and sorting (n=83) (initialization_lambda0): time 0.001122/0.2849, allocations: 0.6964 MB / 0.81 GB, free: 1.578 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 4.211e-05/0.285, allocations: 40.34 kB / 0.81 GB, free: 1.535 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.013e-06/0.285, allocations: 4 kB / 0.81 GB, free: 1.531 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 9.799e-06/0.285, allocations: 4 kB / 0.81 GB, free: 1.527 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004236/0.2854, allocations: 123.8 kB / 0.8102 GB, free: 1.406 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.024e-05/0.2855, allocations: 8.312 kB / 0.8102 GB, free: 1.398 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005757/0.286, allocations: 103.5 kB / 0.8103 GB, free: 1.297 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.815e-05/0.2861, allocations: 28 kB / 0.8103 GB, free: 1.27 MB / 0.6231 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 13 * Number of states: 0 () * Number of discrete variables: 7 ($whenCondition1,$whenCondition2,noLimPID.con1.y,limPI.con1.y,limPID.con1.y,pulse.booPul.y,$PRE.pulse.booPul.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (81): * Single equations (assignments): 80 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.0002758/0.2864, allocations: 224.1 kB / 0.8105 GB, free: 1.043 MB / 0.6231 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001196/0.2865, allocations: 90.89 kB / 0.8106 GB, free: 0.9531 MB / 0.6231 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0001925/0.2867, allocations: 88.03 kB / 0.8107 GB, free: 0.8594 MB / 0.6231 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.885e-06/0.2867, allocations: 7.984 kB / 0.8107 GB, free: 0.8516 MB / 0.6231 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 9.047e-06/0.2867, allocations: 0 / 0.8107 GB, free: 0.8516 MB / 0.6231 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 9.849e-06/0.2868, allocations: 7.984 kB / 0.8107 GB, free: 0.8438 MB / 0.6231 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0008674/0.2876, allocations: 0.7666 MB / 0.8114 GB, free: 28 kB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.807e-06/0.2876, allocations: 0 / 0.8114 GB, free: 28 kB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0005323/0.2882, allocations: 115.8 kB / 0.8115 GB, free: 15.91 MB / 0.6387 GB Notification: Performance of postOpt tearingSystem (simulation): time 7.795e-06/0.2882, allocations: 4 kB / 0.8115 GB, free: 15.91 MB / 0.6387 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.701e-05/0.2882, allocations: 16.17 kB / 0.8116 GB, free: 15.89 MB / 0.6387 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 3.577e-06/0.2882, allocations: 4 kB / 0.8116 GB, free: 15.89 MB / 0.6387 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.533e-06/0.2883, allocations: 3.938 kB / 0.8116 GB, free: 15.89 MB / 0.6387 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001607/0.2899, allocations: 0.8783 MB / 0.8124 GB, free: 14.99 MB / 0.6387 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001597/0.29, allocations: 172 kB / 0.8126 GB, free: 14.8 MB / 0.6387 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.644e-05/0.2901, allocations: 12 kB / 0.8126 GB, free: 14.79 MB / 0.6387 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003153/0.2905, allocations: 43.95 kB / 0.8126 GB, free: 14.75 MB / 0.6387 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.336e-05/0.2905, allocations: 36.45 kB / 0.8127 GB, free: 14.71 MB / 0.6387 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.171e-05/0.2906, allocations: 19.98 kB / 0.8127 GB, free: 14.69 MB / 0.6387 GB Notification: Performance of sorting global known variables: time 0.0005791/0.2912, allocations: 499 kB / 0.8132 GB, free: 14.21 MB / 0.6387 GB Notification: Performance of sort global known variables: time 1.3e-07/0.2912, allocations: 0 / 0.8132 GB, free: 14.21 MB / 0.6387 GB Notification: Performance of remove unused functions: time 0.0007956/0.292, allocations: 314.7 kB / 0.8135 GB, free: 13.9 MB / 0.6387 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 6 (limPID.I.y,limPID.D.x,limPI.I.y,limPD.D.x,noLimPID.I.y,noLimPID.D.x) * Number of discrete variables: 3 ($whenCondition1,$whenCondition2,pulse.booPul.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (59): * Single equations (assignments): 58 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 1 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.001968/0.2939, allocations: 1.454 MB / 0.8149 GB, free: 12.42 MB / 0.6387 GB Notification: Performance of simCode: created initialization part: time 0.001833/0.2958, allocations: 1.041 MB / 0.8159 GB, free: 11.35 MB / 0.6387 GB Notification: Performance of simCode: created event and clocks part: time 6.002e-06/0.2958, allocations: 3.984 kB / 0.8159 GB, free: 11.34 MB / 0.6387 GB Notification: Performance of simCode: created simulation system equations: time 0.0005174/0.2964, allocations: 272.1 kB / 0.8162 GB, free: 11.08 MB / 0.6387 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0009326/0.2973, allocations: 180.5 kB / 0.8163 GB, free: 10.91 MB / 0.6387 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.009336/0.3067, allocations: 6.34 MB / 0.8225 GB, free: 4.371 MB / 0.6387 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004931/0.3072, allocations: 0.9741 MB / 0.8235 GB, free: 3.367 MB / 0.6387 GB Notification: Performance of simCode: alias equations: time 0.0003979/0.3076, allocations: 109.8 kB / 0.8236 GB, free: 3.258 MB / 0.6387 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004247/0.308, allocations: 343.3 kB / 0.8239 GB, free: 2.922 MB / 0.6387 GB Notification: Performance of SimCode: time 9.12e-07/0.3081, allocations: 0 / 0.8239 GB, free: 2.922 MB / 0.6387 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.03675/0.3448, allocations: 15.91 MB / 0.8395 GB, free: 3.211 MB / 0.6544 GB Notification: Performance of buildModelFMU: Generate platform static: time 9.088/9.433, allocations: 4.828 kB / 0.8395 GB, free: 3.211 MB / 0.6544 GB (rm -f Buildings_8_Buildings.Controls.OBC.CDL.Continuous.Validation.PID.pipe ; mkfifo Buildings_8_Buildings.Controls.OBC.CDL.Continuous.Validation.PID.pipe ; head -c 1048576 < Buildings_8_Buildings.Controls.OBC.CDL.Continuous.Validation.PID.pipe >> ../files/Buildings_8_Buildings.Controls.OBC.CDL.Continuous.Validation.PID.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_Buildings_8_Buildings_Controls_OBC_CDL_Continuous_Validation_PID_fmu --startTime=0 --stopTime=1 --timeout=50 --tolerance=1e-06 Buildings_8_Buildings_Controls_OBC_CDL_Continuous_Validation_PID.fmu > Buildings_8_Buildings.Controls.OBC.CDL.Continuous.Validation.PID.pipe 2>&1)