Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ModelicaTest_3.2.1_ModelicaTest.Blocks.Logical.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 3.2.1+maint.om/package.mo", uses=false) Using package ModelicaTest with version 3.2.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 3.2.1+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.Blocks.Logical,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ModelicaTest_3.2.1_ModelicaTest.Blocks.Logical") translateModel(ModelicaTest.Blocks.Logical,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ModelicaTest_3.2.1_ModelicaTest.Blocks.Logical") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.008382/0.008388, allocations: 104.7 kB / 15.73 MB, free: 6.035 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001768/0.001768, allocations: 199.2 kB / 16.67 MB, free: 5.969 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.623/1.623, allocations: 205.1 MB / 222.5 MB, free: 4.391 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 3.2.1+maint.om/package.mo): time 0.4179/0.4179, allocations: 37.99 MB / 307.9 MB, free: 10.42 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 3.2.1. 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 0.002151/0.002151, allocations: 63.91 kB / 433 MB, free: 5.422 MB / 366.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.4583/0.4604, allocations: 56.48 MB / 489.5 MB, free: 20.23 MB / 382.1 MB Notification: Performance of NFInst.instantiate(ModelicaTest.Blocks.Logical): time 0.006448/0.467, allocations: 2.715 MB / 492.2 MB, free: 18.33 MB / 382.1 MB Notification: Performance of NFInst.instExpressions: time 0.002911/0.4699, allocations: 1.321 MB / 493.5 MB, free: 17.41 MB / 382.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0002959/0.4703, allocations: 9.469 kB / 493.5 MB, free: 17.41 MB / 382.1 MB Notification: Performance of NFTyping.typeComponents: time 0.001241/0.4716, allocations: 324.3 kB / 493.8 MB, free: 17.3 MB / 382.1 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/Utilities/Strings.mo:139:3-175:14:writable] Warning: Pure function 'Modelica.Utilities.Strings.isEmpty' contains a call to impure function 'Modelica.Utilities.Strings.Advanced.skipWhiteSpace'. Notification: Performance of NFTyping.typeBindings: time 0.0007113/0.4723, allocations: 238.8 kB / 494.1 MB, free: 17.19 MB / 382.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.001195/0.4735, allocations: 383.4 kB / 494.4 MB, free: 16.98 MB / 382.1 MB Notification: Performance of NFFlatten.flatten: time 0.0009107/0.4744, allocations: 0.6275 MB / 495.1 MB, free: 16.7 MB / 382.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0005143/0.4749, allocations: 232.8 kB / 495.3 MB, free: 16.57 MB / 382.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.000432/0.4754, allocations: 270.4 kB / 495.6 MB, free: 16.45 MB / 382.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0004136/0.4758, allocations: 298 kB / 495.8 MB, free: 16.31 MB / 382.1 MB Notification: Performance of NFPackage.collectConstants: time 0.000108/0.4759, allocations: 48.84 kB / 495.9 MB, free: 16.31 MB / 382.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0003689/0.4763, allocations: 122.5 kB / 496 MB, free: 16.28 MB / 382.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0002785/0.4766, allocations: 161.1 kB / 496.2 MB, free: 16.2 MB / 382.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0003245/0.4769, allocations: 270.2 kB / 496.4 MB, free: 16.01 MB / 382.1 MB Notification: Performance of NFConvertDAE.convert: time 0.001343/0.4783, allocations: 0.6397 MB / 497.1 MB, free: 15.72 MB / 382.1 MB Notification: Performance of FrontEnd - DAE generated: time 8.135e-06/0.4783, allocations: 1.406 kB / 497.1 MB, free: 15.72 MB / 382.1 MB Notification: Performance of FrontEnd: time 2.795e-06/0.4783, allocations: 0 / 497.1 MB, free: 15.72 MB / 382.1 MB Notification: Performance of Transformations before backend: time 1.235e-05/0.4783, allocations: 0 / 497.1 MB, free: 15.72 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: 100 * Number of variables: 100 Notification: Performance of Generate backend data structure: time 0.002483/0.4808, allocations: 0.9834 MB / 498.1 MB, free: 14.98 MB / 382.1 MB Notification: Performance of prepare preOptimizeDAE: time 6.131e-05/0.4809, allocations: 14.19 kB / 498.1 MB, free: 14.98 MB / 382.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001782/0.4811, allocations: 69.33 kB / 498.1 MB, free: 14.95 MB / 382.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0006579/0.4817, allocations: 416.6 kB / 498.5 MB, free: 14.62 MB / 382.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.806e-05/0.4818, allocations: 37.12 kB / 498.6 MB, free: 14.61 MB / 382.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 8.891e-05/0.4819, allocations: 46.69 kB / 498.6 MB, free: 14.59 MB / 382.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.00105/0.4829, allocations: 458 kB / 499.1 MB, free: 14.39 MB / 382.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 2.062e-05/0.483, allocations: 0 / 499.1 MB, free: 14.39 MB / 382.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.55e-05/0.483, allocations: 19.47 kB / 499.1 MB, free: 14.38 MB / 382.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.086e-05/0.4831, allocations: 13.61 kB / 499.1 MB, free: 14.37 MB / 382.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0008422/0.4839, allocations: 317.8 kB / 499.4 MB, free: 14.28 MB / 382.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002734/0.4867, allocations: 1.068 MB / 0.4888 GB, free: 13.69 MB / 382.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.001941/0.4886, allocations: 478.4 kB / 0.4892 GB, free: 13.52 MB / 382.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005954/0.4892, allocations: 181.8 kB / 0.4894 GB, free: 13.45 MB / 382.1 MB Notification: Performance of preOpt evalFunc (simulation): time 7.812e-05/0.4893, allocations: 10.36 kB / 0.4894 GB, free: 13.45 MB / 382.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0009762/0.4903, allocations: 295.4 kB / 0.4897 GB, free: 13.32 MB / 382.1 MB Notification: Performance of pre-optimization done (n=52): time 3.026e-06/0.4903, allocations: 0 / 0.4897 GB, free: 13.32 MB / 382.1 MB Notification: Performance of matching and sorting (n=52): time 0.002224/0.4926, allocations: 0.6125 MB / 0.4903 GB, free: 13.1 MB / 382.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001052/0.4927, allocations: 136.5 kB / 0.4904 GB, free: 12.94 MB / 382.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0008912/0.4936, allocations: 0.5079 MB / 0.4909 GB, free: 12.71 MB / 382.1 MB Notification: Performance of collectPreVariables (initialization): time 7.152e-05/0.4937, allocations: 51.42 kB / 0.4909 GB, free: 12.66 MB / 382.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0002207/0.4939, allocations: 244.1 kB / 0.4912 GB, free: 12.46 MB / 382.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0001565/0.4941, allocations: 124 kB / 0.4913 GB, free: 12.37 MB / 382.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002073/0.4943, allocations: 114 kB / 0.4914 GB, free: 12.31 MB / 382.1 MB Notification: Performance of setup shared object (initialization): time 0.0001543/0.4944, allocations: 369.7 kB / 0.4918 GB, free: 11.97 MB / 382.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004331/0.4949, allocations: 163.2 kB / 0.4919 GB, free: 11.92 MB / 382.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0006137/0.4955, allocations: 258.5 kB / 0.4922 GB, free: 11.79 MB / 382.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.0008803/0.4964, allocations: 298 kB / 0.4924 GB, free: 11.66 MB / 382.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.567e-06/0.4964, allocations: 0 / 0.4924 GB, free: 11.66 MB / 382.1 MB Notification: Performance of matching and sorting (n=68) (initialization): time 0.001215/0.4976, allocations: 481.7 kB / 0.4929 GB, free: 11.46 MB / 382.1 MB Notification: Performance of prepare postOptimizeDAE: time 3.409e-05/0.4977, allocations: 5.562 kB / 0.4929 GB, free: 11.46 MB / 382.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.162e-05/0.4977, allocations: 1.031 kB / 0.4929 GB, free: 11.46 MB / 382.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 4.07e-05/0.4978, allocations: 4.469 kB / 0.4929 GB, free: 11.46 MB / 382.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000365/0.4981, allocations: 67.73 kB / 0.493 GB, free: 11.45 MB / 382.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.241e-05/0.4982, allocations: 3.281 kB / 0.493 GB, free: 11.45 MB / 382.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004694/0.4986, allocations: 89.19 kB / 0.4931 GB, free: 11.41 MB / 382.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.174e-05/0.4987, allocations: 16.98 kB / 0.4931 GB, free: 11.4 MB / 382.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 3 * Number of states: 0 () * Number of discrete variables: 58 ($PRE.table2.combiTimeTable.nextTimeEvent,$whenCondition2,$PRE.table1.combiTimeTable.nextTimeEvent,$whenCondition1,rSFlipFlop.pre.u,$PRE.rSFlipFlop.pre.u,rSFlipFlop.QI,rSFlipFlop.Q,timer.entryTime,$PRE.timer.entryTime,timer.u,triggeredTrapezoid.T,triggeredTrapezoid.rate,triggeredTrapezoid.endValue,onOffController.y,$PRE.onOffController.y,hysteresis.y,$PRE.hysteresis.y,logicalSwitch.y,zeroCrossing.u_pos,$PRE.zeroCrossing.u_pos,zeroCrossing.disable,$PRE.zeroCrossing.disable,zeroCrossing.enable,$PRE.zeroCrossing.enable,zeroCrossing.y,lessEqual.y,less.y,greaterEqual.y,greater.y,lessEqualThreshold.y,lessThreshold.y,greaterEqualThreshold.y,change1.y,change1.u,$PRE.change1.u,fallingEdge.not_u,$PRE.fallingEdge.not_u,fallingEdge.y,edge1.y,edge1.u,$PRE.edge1.u,pre1.y,pre1.u,$PRE.pre1.u,nand.y,nor.y,xor.y,and1.y,table2.combiTimeTable.nextTimeEventScaled,$PRE.table2.combiTimeTable.nextTimeEventScaled,table2.combiTimeTable.nextTimeEvent,table1.combiTimeTable.nextTimeEventScaled,$PRE.table1.combiTimeTable.nextTimeEventScaled,table1.combiTimeTable.nextTimeEvent,table1.y,$whenCondition3,$whenCondition4) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (68): * Single equations (assignments): 68 * 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 0.0003245/0.499, allocations: 218.8 kB / 0.4933 GB, free: 11.23 MB / 382.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 9.635e-05/0.4991, allocations: 59.39 kB / 0.4934 GB, free: 11.2 MB / 382.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0001493/0.4993, allocations: 60.94 kB / 0.4934 GB, free: 11.16 MB / 382.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.272e-05/0.4993, allocations: 6.078 kB / 0.4934 GB, free: 11.16 MB / 382.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.921e-05/0.4993, allocations: 0 / 0.4934 GB, free: 11.16 MB / 382.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.336e-05/0.4993, allocations: 2.484 kB / 0.4934 GB, free: 11.16 MB / 382.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002617/0.502, allocations: 1.081 MB / 0.4945 GB, free: 10.57 MB / 382.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.29e-06/0.502, allocations: 0.75 kB / 0.4945 GB, free: 10.57 MB / 382.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001875/0.5022, allocations: 37.98 kB / 0.4945 GB, free: 10.57 MB / 382.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 8.446e-06/0.5022, allocations: 7.062 kB / 0.4945 GB, free: 10.56 MB / 382.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.871e-05/0.5023, allocations: 14.88 kB / 0.4945 GB, free: 10.55 MB / 382.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 5.911e-06/0.5023, allocations: 2.25 kB / 0.4945 GB, free: 10.55 MB / 382.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.613e-06/0.5023, allocations: 0 / 0.4945 GB, free: 10.55 MB / 382.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001356/0.5036, allocations: 0.5579 MB / 0.4951 GB, free: 10.28 MB / 382.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0001152/0.5038, allocations: 126 kB / 0.4952 GB, free: 10.15 MB / 382.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 8.545e-05/0.5039, allocations: 14.5 kB / 0.4952 GB, free: 10.14 MB / 382.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003905/0.5042, allocations: 56.64 kB / 0.4953 GB, free: 10.13 MB / 382.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002064/0.5045, allocations: 69.16 kB / 0.4953 GB, free: 10.11 MB / 382.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.549e-05/0.5045, allocations: 24.73 kB / 0.4954 GB, free: 10.11 MB / 382.1 MB Notification: Performance of sorting global known variables: time 0.0005106/0.505, allocations: 355.1 kB / 0.4957 GB, free: 9.945 MB / 382.1 MB Notification: Performance of sort global known variables: time 1.8e-07/0.5051, allocations: 0 / 0.4957 GB, free: 9.945 MB / 382.1 MB Notification: Performance of remove unused functions: time 0.0005757/0.5056, allocations: 126 kB / 0.4958 GB, free: 9.914 MB / 382.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 43 (timer.u,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,table1.y,table1.combiTimeTable.nextTimeEvent,table1.combiTimeTable.nextTimeEventScaled,table2.combiTimeTable.nextTimeEvent,table2.combiTimeTable.nextTimeEventScaled,and1.y,xor.y,nor.y,nand.y,pre1.u,pre1.y,edge1.u,edge1.y,fallingEdge.y,fallingEdge.not_u,change1.u,change1.y,greaterEqualThreshold.y,lessThreshold.y,lessEqualThreshold.y,greater.y,greaterEqual.y,less.y,lessEqual.y,zeroCrossing.y,zeroCrossing.enable,zeroCrossing.disable,zeroCrossing.u_pos,logicalSwitch.y,hysteresis.y,onOffController.y,triggeredTrapezoid.endValue,triggeredTrapezoid.rate,triggeredTrapezoid.T,timer.entryTime,rSFlipFlop.Q,rSFlipFlop.QI,rSFlipFlop.pre.u) * Number of discrete states: 15 (table2.combiTimeTable.nextTimeEvent,table1.combiTimeTable.nextTimeEvent,pre1.u,zeroCrossing.u_pos,zeroCrossing.enable,zeroCrossing.disable,hysteresis.y,onOffController.y,rSFlipFlop.pre.u,table2.combiTimeTable.nextTimeEventScaled,triggeredTrapezoid.y,table1.combiTimeTable.nextTimeEventScaled,fallingEdge.not_u,edge1.u,change1.u) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (52): * Single equations (assignments): 44 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 8 * 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 0.001203/0.5068, allocations: 462 kB / 0.4963 GB, free: 9.562 MB / 382.1 MB Notification: Performance of simCode: created initialization part: time 0.001154/0.508, allocations: 433 kB / 0.4967 GB, free: 9.398 MB / 382.1 MB Notification: Performance of simCode: created event and clocks part: time 4.428e-06/0.508, allocations: 1.312 kB / 0.4967 GB, free: 9.398 MB / 382.1 MB Notification: Performance of simCode: created simulation system equations: time 0.0005476/0.5086, allocations: 241.7 kB / 0.4969 GB, free: 9.289 MB / 382.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0006691/0.5093, allocations: 91.66 kB / 0.497 GB, free: 9.238 MB / 382.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001691/0.511, allocations: 0.8826 MB / 0.4978 GB, free: 8.699 MB / 382.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004245/0.5114, allocations: 0.8641 MB / 0.4987 GB, free: 7.926 MB / 382.1 MB Notification: Performance of simCode: alias equations: time 0.0002835/0.5117, allocations: 66.17 kB / 0.4988 GB, free: 7.895 MB / 382.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002006/0.5119, allocations: 53.61 kB / 0.4988 GB, free: 7.875 MB / 382.1 MB Notification: Performance of SimCode: time 2.31e-07/0.5119, allocations: 0 / 0.4988 GB, free: 7.875 MB / 382.1 MB Notification: Performance of Templates: time 0.01561/0.5275, allocations: 7.102 MB / 0.5057 GB, free: 4.32 MB / 382.1 MB make -j1 -f ModelicaTest_3.2.1_ModelicaTest.Blocks.Logical.makefile (rm -f ModelicaTest_3.2.1_ModelicaTest.Blocks.Logical.pipe ; mkfifo ModelicaTest_3.2.1_ModelicaTest.Blocks.Logical.pipe ; head -c 1048576 < ModelicaTest_3.2.1_ModelicaTest.Blocks.Logical.pipe >> ../files/ModelicaTest_3.2.1_ModelicaTest.Blocks.Logical.sim & ./ModelicaTest_3.2.1_ModelicaTest.Blocks.Logical -abortSlowSimulation -alarm=480 -lv LOG_STATS > ModelicaTest_3.2.1_ModelicaTest.Blocks.Logical.pipe 2>&1)