Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Valves.TestCheckValve.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/ModelicaTest 3.2.2+maint.om/package.mo", uses=false) Using package ModelicaTest with version 3.2.2 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 3.2.2+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 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(ModelicaTest.Fluid.TestComponents.Valves.TestCheckValve,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Valves.TestCheckValve") translateModel(ModelicaTest.Fluid.TestComponents.Valves.TestCheckValve,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Valves.TestCheckValve") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001391/0.001391, allocations: 115.3 kB / 15.34 MB, free: 0.5156 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001395/0.001395, allocations: 189.2 kB / 16.25 MB, free: 6.625 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.465/1.465, allocations: 205.1 MB / 222.1 MB, free: 4.707 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 3.2.2+maint.om/package.mo): time 0.4004/0.4004, allocations: 39.94 MB / 309.4 MB, free: 9.07 MB / 254.1 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: ModelicaTest requested package Modelica of version 3.2.2. Modelica 3.2.3 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.001754/0.001755, allocations: 75.91 kB / 377.1 MB, free: 12.74 MB / 318.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1521/0.1539, allocations: 56.89 MB / 434 MB, free: 3.75 MB / 366.1 MB Notification: Performance of NFInst.instantiate(ModelicaTest.Fluid.TestComponents.Valves.TestCheckValve): time 0.2659/0.4198, allocations: 28.63 MB / 462.6 MB, free: 35.96 MB / 382.1 MB Notification: Performance of NFInst.instExpressions: time 0.01737/0.4373, allocations: 17.1 MB / 479.7 MB, free: 27.56 MB / 382.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0006399/0.438, allocations: 13.91 kB / 479.7 MB, free: 27.55 MB / 382.1 MB Notification: Performance of NFTyping.typeComponents: time 0.0008841/0.4389, allocations: 226.3 kB / 480 MB, free: 27.43 MB / 382.1 MB Notification: Performance of NFTyping.typeBindings: time 0.01513/0.4541, allocations: 4.012 MB / 484 MB, free: 25.8 MB / 382.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.005777/0.4599, allocations: 1.694 MB / 485.7 MB, free: 24.93 MB / 382.1 MB Notification: Performance of NFFlatten.flatten: time 0.001453/0.4613, allocations: 0.9703 MB / 486.6 MB, free: 24.47 MB / 382.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0003894/0.4617, allocations: 273.6 kB / 486.9 MB, free: 24.36 MB / 382.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.000866/0.4626, allocations: 488.4 kB / 487.4 MB, free: 24.14 MB / 382.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.003348/0.466, allocations: 1.861 MB / 489.3 MB, free: 23.29 MB / 382.1 MB Notification: Performance of NFPackage.collectConstants: time 8.788e-05/0.4661, allocations: 37.03 kB / 489.3 MB, free: 23.29 MB / 382.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.01558/0.4816, allocations: 7.401 MB / 496.7 MB, free: 21.34 MB / 382.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0002935/0.482, allocations: 115.1 kB / 496.8 MB, free: 21.27 MB / 382.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0005211/0.4825, allocations: 246.5 kB / 497 MB, free: 21.13 MB / 382.1 MB Notification: Performance of NFConvertDAE.convert: time 0.02026/0.5028, allocations: 4.651 MB / 0.4899 GB, free: 19.8 MB / 382.1 MB Notification: Performance of FrontEnd - DAE generated: time 5.54e-06/0.5028, allocations: 2.359 kB / 0.4899 GB, free: 19.8 MB / 382.1 MB Notification: Performance of FrontEnd: time 1.383e-06/0.5028, allocations: 3.938 kB / 0.4899 GB, free: 19.8 MB / 382.1 MB Notification: Performance of Transformations before backend: time 1.064e-05/0.5029, allocations: 0 / 0.4899 GB, free: 19.8 MB / 382.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 78 * Number of variables: 78 Notification: Performance of Generate backend data structure: time 0.006767/0.5096, allocations: 1.329 MB / 0.4912 GB, free: 18.94 MB / 382.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.481e-05/0.5097, allocations: 14.05 kB / 0.4913 GB, free: 18.94 MB / 382.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002149/0.5118, allocations: 240.3 kB / 0.4915 GB, free: 18.89 MB / 382.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0006095/0.5125, allocations: 398.3 kB / 0.4919 GB, free: 18.59 MB / 382.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.719e-05/0.5125, allocations: 30.72 kB / 0.4919 GB, free: 18.57 MB / 382.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 5.825e-05/0.5126, allocations: 27.88 kB / 0.4919 GB, free: 18.56 MB / 382.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001774/0.5144, allocations: 0.602 MB / 0.4925 GB, free: 18.31 MB / 382.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.798e-05/0.5144, allocations: 1.188 kB / 0.4925 GB, free: 18.31 MB / 382.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.989e-05/0.5145, allocations: 16.28 kB / 0.4925 GB, free: 18.3 MB / 382.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.589e-05/0.5145, allocations: 9.922 kB / 0.4925 GB, free: 18.3 MB / 382.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001727/0.5162, allocations: 0.5604 MB / 0.4931 GB, free: 18.16 MB / 382.1 MB 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 0.003211/0.5194, allocations: 2.639 MB / 0.4957 GB, free: 15.97 MB / 382.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.001512/0.521, allocations: 458.7 kB / 0.4961 GB, free: 15.84 MB / 382.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005089/0.5215, allocations: 205.9 kB / 0.4963 GB, free: 15.77 MB / 382.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.04892/0.5704, allocations: 24.21 MB / 0.5199 GB, free: 12.87 MB / 398.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.484e-05/0.5705, allocations: 38.97 kB / 0.52 GB, free: 12.82 MB / 398.1 MB Notification: Performance of pre-optimization done (n=25): time 4.198e-06/0.5705, allocations: 3.984 kB / 0.52 GB, free: 12.82 MB / 398.1 MB Notification: Performance of matching and sorting (n=25): time 0.003037/0.5736, allocations: 0.8078 MB / 0.5208 GB, free: 12.42 MB / 398.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 8.039e-05/0.5737, allocations: 121.4 kB / 0.5209 GB, free: 12.28 MB / 398.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0005302/0.5742, allocations: 370.3 kB / 0.5212 GB, free: 12.04 MB / 398.1 MB Notification: Performance of collectPreVariables (initialization): time 4.452e-05/0.5743, allocations: 29.7 kB / 0.5213 GB, free: 12.01 MB / 398.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0001715/0.5744, allocations: 219.5 kB / 0.5215 GB, free: 11.81 MB / 398.1 MB Notification: Performance of collectInitialBindings (initialization): time 8.602e-05/0.5745, allocations: 94.02 kB / 0.5216 GB, free: 11.73 MB / 398.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001508/0.5747, allocations: 71.38 kB / 0.5216 GB, free: 11.68 MB / 398.1 MB Notification: Performance of setup shared object (initialization): time 0.0001619/0.5749, allocations: 351.2 kB / 0.522 GB, free: 11.34 MB / 398.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004275/0.5753, allocations: 169 kB / 0.5221 GB, free: 11.25 MB / 398.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005173/0.5758, allocations: 265.3 kB / 0.5224 GB, free: 11.04 MB / 398.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.0008706/0.5767, allocations: 403.1 kB / 0.5228 GB, free: 10.77 MB / 398.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.883e-06/0.5767, allocations: 6.5 kB / 0.5228 GB, free: 10.77 MB / 398.1 MB Notification: Performance of matching and sorting (n=38) (initialization): time 0.001111/0.5778, allocations: 477.7 kB / 0.5232 GB, free: 10.39 MB / 398.1 MB Notification: Performance of prepare postOptimizeDAE: time 2.375e-05/0.5779, allocations: 8 kB / 0.5232 GB, free: 10.38 MB / 398.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.417e-06/0.5779, allocations: 4.344 kB / 0.5232 GB, free: 10.38 MB / 398.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 1.971e-05/0.5779, allocations: 8 kB / 0.5232 GB, free: 10.37 MB / 398.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004241/0.5783, allocations: 95.86 kB / 0.5233 GB, free: 10.27 MB / 398.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.337e-05/0.5784, allocations: 7.984 kB / 0.5233 GB, free: 10.27 MB / 398.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004715/0.5788, allocations: 63.56 kB / 0.5234 GB, free: 10.2 MB / 398.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.012e-05/0.5789, allocations: 27.98 kB / 0.5234 GB, free: 10.18 MB / 398.1 MB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0005366/0.5795, allocations: 268 kB / 0.5237 GB, free: 9.91 MB / 398.1 MB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0004749/0.58, allocations: 261.2 kB / 0.5239 GB, free: 9.613 MB / 398.1 MB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0008176/0.5808, allocations: 383.2 kB / 0.5243 GB, free: 9.203 MB / 398.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.523e-06/0.5808, allocations: 0 / 0.5243 GB, free: 9.203 MB / 398.1 MB Notification: Performance of matching and sorting (n=38) (initialization_lambda0): time 0.001081/0.5819, allocations: 476.7 kB / 0.5248 GB, free: 8.73 MB / 398.1 MB Notification: Performance of prepare postOptimizeDAE: time 1.253e-05/0.5819, allocations: 8 kB / 0.5248 GB, free: 8.723 MB / 398.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.72e-06/0.5819, allocations: 4.344 kB / 0.5248 GB, free: 8.719 MB / 398.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 6.422e-06/0.5819, allocations: 7.938 kB / 0.5248 GB, free: 8.711 MB / 398.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003841/0.5823, allocations: 99.86 kB / 0.5249 GB, free: 8.613 MB / 398.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 8.035e-06/0.5823, allocations: 5.016 kB / 0.5249 GB, free: 8.609 MB / 398.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004243/0.5828, allocations: 67.58 kB / 0.5249 GB, free: 8.543 MB / 398.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.093e-05/0.5828, allocations: 16 kB / 0.525 GB, free: 8.527 MB / 398.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 12 * Number of states: 0 () * Number of discrete variables: 4 (V1.state_b.phase,V1.state_a.phase,SinkP1.medium.phase,SourceP1.medium.phase) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (38): * Single equations (assignments): 38 * Array equations: 0 * Algorithm blocks: 0 * 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 0.0001927/0.583, allocations: 200.1 kB / 0.5251 GB, free: 8.324 MB / 398.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001088/0.5831, allocations: 46.83 kB / 0.5252 GB, free: 8.281 MB / 398.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002553/0.5857, allocations: 1.959 MB / 0.5271 GB, free: 6.312 MB / 398.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.06e-05/0.5857, allocations: 31.95 kB / 0.5271 GB, free: 6.281 MB / 398.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 8.155e-06/0.5857, allocations: 3.984 kB / 0.5271 GB, free: 6.277 MB / 398.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.111e-06/0.5858, allocations: 0 / 0.5271 GB, free: 6.277 MB / 398.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001199/0.587, allocations: 1.059 MB / 0.5282 GB, free: 5.172 MB / 398.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.758e-06/0.587, allocations: 3.938 kB / 0.5282 GB, free: 5.168 MB / 398.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003265/0.5873, allocations: 75.86 kB / 0.5282 GB, free: 5.094 MB / 398.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 1.686e-05/0.5873, allocations: 4 kB / 0.5283 GB, free: 5.09 MB / 398.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.499e-05/0.5874, allocations: 8 kB / 0.5283 GB, free: 5.082 MB / 398.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 2.705e-06/0.5874, allocations: 4 kB / 0.5283 GB, free: 5.078 MB / 398.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.934e-06/0.5874, allocations: 4 kB / 0.5283 GB, free: 5.074 MB / 398.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001538/0.5889, allocations: 1.123 MB / 0.5294 GB, free: 3.93 MB / 398.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.000258/0.5892, allocations: 215.6 kB / 0.5296 GB, free: 3.699 MB / 398.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 8.152e-05/0.5893, allocations: 23.78 kB / 0.5296 GB, free: 3.676 MB / 398.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000327/0.5896, allocations: 41.42 kB / 0.5296 GB, free: 3.637 MB / 398.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001151/0.5897, allocations: 35.89 kB / 0.5297 GB, free: 3.602 MB / 398.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.04e-05/0.5898, allocations: 12 kB / 0.5297 GB, free: 3.59 MB / 398.1 MB Notification: Performance of sorting global known variables: time 0.0004497/0.5902, allocations: 378.8 kB / 0.53 GB, free: 3.219 MB / 398.1 MB Notification: Performance of sort global known variables: time 2.7e-07/0.5902, allocations: 0 / 0.53 GB, free: 3.219 MB / 398.1 MB Notification: Performance of remove unused functions: time 0.007772/0.598, allocations: 1.148 MB / 0.5312 GB, free: 2.07 MB / 398.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 18 ($cse4.phase,$cse4.region,$cse5.phase,$cse5.region,$cse7.phase,$cse7.region,$cse8.phase,$cse8.region,$cse9.region3boundary,$cse10.region3boundary,$cse11.phase,$cse11.region,$cse12.phase,$cse12.region,$cse15.phase,$cse15.region,SourceP1.medium.phase,SinkP1.medium.phase) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (38): * Single equations (assignments): 29 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 9 * When equations: 0 * 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 0.01227/0.6103, allocations: 1.258 MB / 0.5324 GB, free: 0.8086 MB / 398.1 MB Notification: Performance of simCode: created initialization part: time 0.002521/0.6129, allocations: 0.8809 MB / 0.5332 GB, free: 15.93 MB / 414.1 MB Notification: Performance of simCode: created event and clocks part: time 6.042e-06/0.6129, allocations: 0 / 0.5332 GB, free: 15.93 MB / 414.1 MB Notification: Performance of simCode: created simulation system equations: time 0.0007161/0.6136, allocations: 0.5254 MB / 0.5338 GB, free: 15.41 MB / 414.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0014/0.6151, allocations: 246.1 kB / 0.534 GB, free: 15.18 MB / 414.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002446/0.6175, allocations: 1.964 MB / 0.5359 GB, free: 13.18 MB / 414.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005374/0.6181, allocations: 0.9833 MB / 0.5369 GB, free: 12.17 MB / 414.1 MB Notification: Performance of simCode: alias equations: time 0.000931/0.619, allocations: 0.6094 MB / 0.5375 GB, free: 11.56 MB / 414.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001363/0.6192, allocations: 55.38 kB / 0.5375 GB, free: 11.51 MB / 414.1 MB Notification: Performance of SimCode: time 8.41e-07/0.6192, allocations: 0 / 0.5375 GB, free: 11.51 MB / 414.1 MB Notification: Performance of Templates: time 0.05926/0.6784, allocations: 41.31 MB / 0.5779 GB, free: 2.191 MB / 446.1 MB make -j1 -f ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Valves.TestCheckValve.makefile (rm -f ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Valves.TestCheckValve.pipe ; mkfifo ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Valves.TestCheckValve.pipe ; head -c 1048576 < ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Valves.TestCheckValve.pipe >> ../files/ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Valves.TestCheckValve.sim & ./ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Valves.TestCheckValve -abortSlowSimulation -alarm=480 -lv LOG_STATS > ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Valves.TestCheckValve.pipe 2>&1)