Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr OpenIPSL_release_OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test.conf.json 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/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0-master/package.mo", uses=false) Using package OpenIPSL with version 3.1.0-dev (/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0-master/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) 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) Running command: translateModel(OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="OpenIPSL_release_OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test") translateModel(OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="OpenIPSL_release_OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.000862/0.0008621, allocations: 175.2 kB / 15.42 MB, free: 6.141 MB / 13.93 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.21/1.21, allocations: 222.9 MB / 239 MB, free: 15.87 MB / 202.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0007483/0.0007484, allocations: 98.22 kB / 289.8 MB, free: 4.566 MB / 234.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0-master/package.mo): time 0.2916/0.2916, allocations: 78.43 MB / 419 MB, free: 24 kB / 346.7 MB Notification: Performance of FrontEnd - loaded program: time 0.0003147/0.0003147, allocations: 9.156 kB / 498.4 MB, free: 8.289 MB / 362.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1037/0.104, allocations: 68.76 MB / 0.5539 GB, free: 3.473 MB / 426.7 MB Notification: Performance of NFInst.instantiate(OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test): time 0.007004/0.111, allocations: 7.373 MB / 0.5611 GB, free: 12.05 MB / 442.7 MB Notification: Performance of NFInst.instExpressions: time 0.003373/0.1144, allocations: 2.188 MB / 0.5632 GB, free: 9.859 MB / 442.7 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0004278/0.1149, allocations: 27.88 kB / 0.5633 GB, free: 9.832 MB / 442.7 MB Notification: Performance of NFTyping.typeComponents: time 0.0004617/0.1154, allocations: 198.6 kB / 0.5634 GB, free: 9.637 MB / 442.7 MB Notification: Performance of NFTyping.typeBindings: time 0.00138/0.1167, allocations: 0.6605 MB / 0.5641 GB, free: 8.973 MB / 442.7 MB Notification: Performance of NFTyping.typeClassSections: time 0.001332/0.1181, allocations: 0.7277 MB / 0.5648 GB, free: 8.254 MB / 442.7 MB Notification: Performance of NFFlatten.flatten: time 0.001301/0.1194, allocations: 1.57 MB / 0.5663 GB, free: 6.68 MB / 442.7 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0005038/0.1199, allocations: 432.5 kB / 0.5668 GB, free: 6.227 MB / 442.7 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0005488/0.1205, allocations: 0.5674 MB / 0.5673 GB, free: 5.656 MB / 442.7 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0006378/0.1211, allocations: 0.7227 MB / 0.568 GB, free: 4.93 MB / 442.7 MB Notification: Performance of NFPackage.collectConstants: time 0.0001227/0.1212, allocations: 60 kB / 0.5681 GB, free: 4.871 MB / 442.7 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0003607/0.1216, allocations: 195.9 kB / 0.5683 GB, free: 4.68 MB / 442.7 MB Notification: Performance of NFScalarize.scalarize: time 0.0001915/0.1218, allocations: 258.5 kB / 0.5685 GB, free: 4.426 MB / 442.7 MB Notification: Performance of NFVerifyModel.verify: time 0.0004351/0.1223, allocations: 0.6364 MB / 0.5691 GB, free: 3.785 MB / 442.7 MB Notification: Performance of NFConvertDAE.convert: time 0.001293/0.1236, allocations: 1.708 MB / 0.5708 GB, free: 2.07 MB / 442.7 MB Notification: Performance of FrontEnd - DAE generated: time 3.737e-06/0.1236, allocations: 0 / 0.5708 GB, free: 2.07 MB / 442.7 MB Notification: Performance of FrontEnd: time 1.092e-06/0.1236, allocations: 0 / 0.5708 GB, free: 2.07 MB / 442.7 MB Notification: Performance of Transformations before backend: time 1.247e-05/0.1236, allocations: 0 / 0.5708 GB, free: 2.07 MB / 442.7 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 244 * Number of variables: 244 Notification: Performance of Generate backend data structure: time 0.2123/0.3359, allocations: 2.481 MB / 0.5732 GB, free: 45.74 MB / 442.7 MB Notification: Performance of prepare preOptimizeDAE: time 4.575e-05/0.3359, allocations: 9.219 kB / 0.5732 GB, free: 45.74 MB / 442.7 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004839/0.3408, allocations: 0.8032 MB / 0.574 GB, free: 45.65 MB / 442.7 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001221/0.342, allocations: 0.9082 MB / 0.5749 GB, free: 45.25 MB / 442.7 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001834/0.3422, allocations: 239.2 kB / 0.5751 GB, free: 45.09 MB / 442.7 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001522/0.3424, allocations: 98.06 kB / 0.5752 GB, free: 45.09 MB / 442.7 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002164/0.3446, allocations: 1.375 MB / 0.5766 GB, free: 44.91 MB / 442.7 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.843e-05/0.3446, allocations: 4.688 kB / 0.5766 GB, free: 44.91 MB / 442.7 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.169e-05/0.3447, allocations: 41.47 kB / 0.5766 GB, free: 44.91 MB / 442.7 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.893e-05/0.3447, allocations: 22.34 kB / 0.5766 GB, free: 44.91 MB / 442.7 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002179/0.3469, allocations: 1.214 MB / 0.5778 GB, free: 44.89 MB / 442.7 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 0.005007/0.3519, allocations: 4.475 MB / 0.5822 GB, free: 43.14 MB / 442.7 MB Notification: Performance of preOpt comSubExp (simulation): time 0.002879/0.3548, allocations: 1.707 MB / 0.5838 GB, free: 42.54 MB / 442.7 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.001413/0.3562, allocations: 0.8313 MB / 0.5847 GB, free: 42.53 MB / 442.7 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0001166/0.3563, allocations: 21.14 kB / 0.5847 GB, free: 42.53 MB / 442.7 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.063e-05/0.3564, allocations: 44.44 kB / 0.5847 GB, free: 42.49 MB / 442.7 MB Notification: Performance of pre-optimization done (n=110): time 2.495e-06/0.3564, allocations: 0 / 0.5847 GB, free: 42.49 MB / 442.7 MB Notification: Performance of matching and sorting (n=110): time 0.02637/0.3828, allocations: 7.026 MB / 0.5916 GB, free: 42.04 MB / 442.7 MB Notification: Performance of inlineWhenForInitialization (initialization): time 4.872e-05/0.3828, allocations: 115 kB / 0.5917 GB, free: 41.91 MB / 442.7 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001318/0.3842, allocations: 1.057 MB / 0.5927 GB, free: 41.48 MB / 442.7 MB Notification: Performance of collectPreVariables (initialization): time 0.0001391/0.3843, allocations: 45.3 kB / 0.5928 GB, free: 41.43 MB / 442.7 MB Notification: Performance of collectInitialEqns (initialization): time 0.0002925/0.3846, allocations: 0.5831 MB / 0.5933 GB, free: 40.97 MB / 442.7 MB Notification: Performance of collectInitialBindings (initialization): time 0.000281/0.3849, allocations: 399.2 kB / 0.5937 GB, free: 40.66 MB / 442.7 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001508/0.3851, allocations: 124.7 kB / 0.5938 GB, free: 40.6 MB / 442.7 MB Notification: Performance of setup shared object (initialization): time 6.56e-05/0.3851, allocations: 359.6 kB / 0.5942 GB, free: 40.27 MB / 442.7 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001395/0.3865, allocations: 0.7526 MB / 0.5949 GB, free: 40 MB / 442.7 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001456/0.388, allocations: 0.9634 MB / 0.5959 GB, free: 39.51 MB / 442.7 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.01621/0.4042, allocations: 4.973 MB / 0.6007 GB, free: 38.02 MB / 442.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.263e-06/0.4043, allocations: 3.156 kB / 0.6007 GB, free: 38.02 MB / 442.7 MB Notification: Performance of matching and sorting (n=176) (initialization): time 0.01231/0.4166, allocations: 4.583 MB / 0.6052 GB, free: 36.88 MB / 442.7 MB Notification: Performance of prepare postOptimizeDAE: time 0.0001049/0.4167, allocations: 220.2 kB / 0.6054 GB, free: 36.62 MB / 442.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.189e-05/0.4167, allocations: 3.062 kB / 0.6054 GB, free: 36.62 MB / 442.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.005494/0.4222, allocations: 1.905 MB / 0.6073 GB, free: 36.29 MB / 442.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000922/0.4232, allocations: 224.4 kB / 0.6075 GB, free: 36.26 MB / 442.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01841/0.4416, allocations: 9.166 MB / 0.6164 GB, free: 32.07 MB / 442.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001539/0.4431, allocations: 189.8 kB / 0.6166 GB, free: 31.99 MB / 442.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 9.877e-05/0.4433, allocations: 54.48 kB / 0.6167 GB, free: 31.97 MB / 442.7 MB Notification: Performance of prepare postOptimizeDAE: time 8.686e-06/0.4433, allocations: 2.875 kB / 0.6167 GB, free: 31.97 MB / 442.7 MB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.01306/0.4563, allocations: 4.385 MB / 0.6209 GB, free: 30.93 MB / 442.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.601e-05/0.4564, allocations: 9.344 kB / 0.621 GB, free: 30.93 MB / 442.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.006475/0.4629, allocations: 1.893 MB / 0.6228 GB, free: 30.61 MB / 442.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001048/0.4639, allocations: 221.2 kB / 0.623 GB, free: 30.58 MB / 442.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01896/0.4829, allocations: 9.144 MB / 0.6319 GB, free: 25.45 MB / 442.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00143/0.4844, allocations: 172.3 kB / 0.6321 GB, free: 25.34 MB / 442.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.869e-05/0.4845, allocations: 55.42 kB / 0.6322 GB, free: 25.32 MB / 442.7 MB Warning: Assuming fixed start value for the following 5 variables: tGTypeIV.integrator3.y:VARIABLE(flow=false start = tGTypeIV.integrator3.y_start fixed = true ) "Connector of Real output signal" type: Real tGTypeIV.integrator2.y:VARIABLE(flow=false start = tGTypeIV.integrator2.y_start fixed = true ) "Connector of Real output signal" type: Real tGTypeIV.integrator4.y:VARIABLE(flow=false start = tGTypeIV.integrator4.y_start fixed = true ) "Connector of Real output signal" type: Real tGTypeIV.integrator5.y:VARIABLE(flow=false start = tGTypeIV.integrator5.y_start fixed = true ) "Connector of Real output signal" type: Real tGTypeIV.integrator1.y:VARIABLE(flow=false start = tGTypeIV.integrator1.y_start fixed = true ) "Connector of Real output signal" type: Real Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 19 * Number of states: 0 () * Number of discrete variables: 5 (tGTypeIV.integrator1.local_reset,tGTypeIV.integrator5.local_reset,tGTypeIV.integrator4.local_reset,tGTypeIV.integrator2.local_reset,tGTypeIV.integrator3.local_reset) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (136): * Single equations (assignments): 135 * 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 {(25,16)} Notification: Performance of prepare postOptimizeDAE: time 0.0005901/0.4851, allocations: 363.4 kB / 0.6325 GB, free: 25.03 MB / 442.7 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001921/0.4853, allocations: 144.7 kB / 0.6326 GB, free: 24.95 MB / 442.7 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0118/0.4971, allocations: 4.21 MB / 0.6368 GB, free: 21.68 MB / 442.7 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.558e-05/0.4971, allocations: 12 kB / 0.6368 GB, free: 21.66 MB / 442.7 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.609e-06/0.4971, allocations: 3.938 kB / 0.6368 GB, free: 21.66 MB / 442.7 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.145e-05/0.4972, allocations: 3.984 kB / 0.6368 GB, free: 21.66 MB / 442.7 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01336/0.5105, allocations: 6.031 MB / 0.6427 GB, free: 15.52 MB / 442.7 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.325e-05/0.5106, allocations: 4 kB / 0.6427 GB, free: 15.51 MB / 442.7 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006231/0.5112, allocations: 124.9 kB / 0.6428 GB, free: 15.39 MB / 442.7 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.005152/0.5164, allocations: 1.819 MB / 0.6446 GB, free: 13.57 MB / 442.7 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001481/0.5166, allocations: 24 kB / 0.6446 GB, free: 13.55 MB / 442.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.01483/0.5314, allocations: 7.876 MB / 0.6523 GB, free: 5.539 MB / 442.7 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.023e-06/0.5314, allocations: 0 / 0.6523 GB, free: 5.539 MB / 442.7 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01316/0.5446, allocations: 5.209 MB / 0.6574 GB, free: 316 kB / 442.7 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0004249/0.545, allocations: 227.1 kB / 0.6576 GB, free: 68 kB / 442.7 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001603/0.5452, allocations: 24 kB / 0.6576 GB, free: 44 kB / 442.7 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0009532/0.5462, allocations: 101.4 kB / 0.6577 GB, free: 15.95 MB / 458.7 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0005811/0.5468, allocations: 205.3 kB / 0.6579 GB, free: 15.75 MB / 458.7 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.991e-05/0.5468, allocations: 31.98 kB / 0.6579 GB, free: 15.71 MB / 458.7 MB Notification: Performance of sorting global known variables: time 0.0008094/0.5477, allocations: 0.6984 MB / 0.6586 GB, free: 15.01 MB / 458.7 MB Notification: Performance of sort global known variables: time 1.7e-07/0.5477, allocations: 0 / 0.6586 GB, free: 15.01 MB / 458.7 MB Notification: Performance of remove unused functions: time 0.002047/0.5497, allocations: 0.7966 MB / 0.6594 GB, free: 14.21 MB / 458.7 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 8 (gen.delta,gen.w,gen.e1q,tGTypeIV.integrator3.y,tGTypeIV.integrator2.y,tGTypeIV.integrator4.y,tGTypeIV.integrator5.y,tGTypeIV.integrator1.y) * 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 (73): * Single equations (assignments): 72 * 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 {(26,14)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0002397/0.55, allocations: 128.8 kB / 0.6595 GB, free: 14.08 MB / 458.7 MB Notification: Performance of simCode: created initialization part: time 0.011/0.561, allocations: 4.387 MB / 0.6638 GB, free: 9.695 MB / 458.7 MB Notification: Performance of simCode: created event and clocks part: time 5.37e-06/0.561, allocations: 4.062 kB / 0.6638 GB, free: 9.691 MB / 458.7 MB Notification: Performance of simCode: created simulation system equations: time 0.004277/0.5653, allocations: 1.605 MB / 0.6654 GB, free: 8.074 MB / 458.7 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001088/0.5664, allocations: 142.5 kB / 0.6655 GB, free: 7.938 MB / 458.7 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003793/0.5702, allocations: 2.879 MB / 0.6683 GB, free: 5.062 MB / 458.7 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006449/0.5709, allocations: 1.184 MB / 0.6695 GB, free: 3.855 MB / 458.7 MB Notification: Performance of simCode: alias equations: time 0.0005151/0.5714, allocations: 129.3 kB / 0.6696 GB, free: 3.73 MB / 458.7 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.000207/0.5716, allocations: 75.42 kB / 0.6697 GB, free: 3.656 MB / 458.7 MB Notification: Performance of SimCode: time 8.22e-07/0.5716, allocations: 0 / 0.6697 GB, free: 3.656 MB / 458.7 MB Notification: Performance of Templates: time 0.04143/0.6131, allocations: 31.26 MB / 0.7002 GB, free: 4.527 MB / 490.7 MB make -j1 -f OpenIPSL_release_OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test.makefile (rm -f OpenIPSL_release_OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test.pipe ; mkfifo OpenIPSL_release_OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test.pipe ; head -c 1048576 < OpenIPSL_release_OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test.pipe >> ../files/OpenIPSL_release_OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test.sim & ./OpenIPSL_release_OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test -abortSlowSimulation -alarm=480 -lv LOG_STATS > OpenIPSL_release_OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test.pipe 2>&1)