Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull.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 7.0.3-maint.7.0.x/package.mo", uses=false) Using package Buildings with version 7.0.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.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: translateModel(Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull") translateModel(Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001467/0.001466, allocations: 111.3 kB / 15.23 MB, free: 0.6602 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00154/0.00154, allocations: 193.8 kB / 16.13 MB, free: 6.652 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 2.113/2.113, allocations: 205.1 MB / 222 MB, free: 4.977 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo): time 1.658/1.658, allocations: 251.7 MB / 0.5088 GB, free: 3.332 MB / 414.1 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 0.00199/0.00199, allocations: 63.91 kB / 0.6216 GB, free: 1.953 MB / 0.5137 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.7954/0.7974, allocations: 104.7 MB / 0.7238 GB, free: 13.12 MB / 0.545 GB Notification: Performance of NFInst.instantiate(Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull): time 0.007144/0.8045, allocations: 5.395 MB / 0.7291 GB, free: 7.699 MB / 0.545 GB Notification: Performance of NFInst.instExpressions: time 0.007554/0.8122, allocations: 4.175 MB / 0.7332 GB, free: 3.508 MB / 0.545 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0007987/0.813, allocations: 15.88 kB / 0.7332 GB, free: 3.492 MB / 0.545 GB Notification: Performance of NFTyping.typeComponents: time 0.001589/0.8147, allocations: 0.541 MB / 0.7337 GB, free: 2.949 MB / 0.545 GB Notification: Performance of NFTyping.typeBindings: time 0.002089/0.8168, allocations: 0.6186 MB / 0.7343 GB, free: 2.328 MB / 0.545 GB Notification: Performance of NFTyping.typeClassSections: time 0.00168/0.8185, allocations: 0.4984 MB / 0.7348 GB, free: 1.832 MB / 0.545 GB Notification: Performance of NFFlatten.flatten: time 0.001902/0.8204, allocations: 1.63 MB / 0.7364 GB, free: 200 kB / 0.545 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0008493/0.8212, allocations: 432.9 kB / 0.7368 GB, free: 15.77 MB / 0.5606 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0006615/0.8219, allocations: 406.3 kB / 0.7372 GB, free: 15.38 MB / 0.5606 GB Notification: Performance of NFSimplifyModel.simplify: time 0.000915/0.8228, allocations: 0.5411 MB / 0.7377 GB, free: 14.83 MB / 0.5606 GB Notification: Performance of NFPackage.collectConstants: time 0.000105/0.8229, allocations: 40 kB / 0.7377 GB, free: 14.79 MB / 0.5606 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002015/0.825, allocations: 1.01 MB / 0.7387 GB, free: 13.78 MB / 0.5606 GB Notification: Performance of NFScalarize.scalarize: time 0.0003471/0.8253, allocations: 315.1 kB / 0.739 GB, free: 13.47 MB / 0.5606 GB Notification: Performance of NFVerifyModel.verify: time 0.000437/0.8258, allocations: 397.8 kB / 0.7394 GB, free: 13.08 MB / 0.5606 GB Notification: Performance of NFConvertDAE.convert: time 0.001859/0.8276, allocations: 1.433 MB / 0.7408 GB, free: 11.64 MB / 0.5606 GB Notification: Performance of FrontEnd - DAE generated: time 1.36e-05/0.8277, allocations: 4 kB / 0.7408 GB, free: 11.64 MB / 0.5606 GB Notification: Performance of FrontEnd: time 1.182e-06/0.8277, allocations: 4 kB / 0.7408 GB, free: 11.64 MB / 0.5606 GB Notification: Performance of Transformations before backend: time 1.054e-05/0.8277, allocations: 0 / 0.7408 GB, free: 11.64 MB / 0.5606 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 184 * Number of variables: 184 Notification: Performance of Generate backend data structure: time 0.002077/0.8298, allocations: 1.141 MB / 0.7419 GB, free: 10.44 MB / 0.5606 GB Notification: Performance of prepare preOptimizeDAE: time 4.544e-05/0.8298, allocations: 12.03 kB / 0.7419 GB, free: 10.43 MB / 0.5606 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.008838/0.8387, allocations: 1.689 MB / 0.7436 GB, free: 8.738 MB / 0.5606 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001167/0.8399, allocations: 0.6156 MB / 0.7442 GB, free: 8.078 MB / 0.5606 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.482e-05/0.8399, allocations: 49.66 kB / 0.7442 GB, free: 8.031 MB / 0.5606 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001569/0.8401, allocations: 56.36 kB / 0.7443 GB, free: 7.977 MB / 0.5606 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.004458/0.8446, allocations: 1.913 MB / 0.7462 GB, free: 6 MB / 0.5606 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.6e-05/0.8446, allocations: 4 kB / 0.7462 GB, free: 5.996 MB / 0.5606 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001384/0.8447, allocations: 31.97 kB / 0.7462 GB, free: 5.965 MB / 0.5606 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0003069/0.8451, allocations: 149.4 kB / 0.7463 GB, free: 5.82 MB / 0.5606 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.006858/0.8519, allocations: 2.601 MB / 0.7489 GB, free: 3.219 MB / 0.5606 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.009719/0.8617, allocations: 6.649 MB / 0.7554 GB, free: 12.21 MB / 0.5762 GB Notification: Performance of preOpt comSubExp (simulation): time 0.003085/0.8648, allocations: 1.265 MB / 0.7566 GB, free: 10.92 MB / 0.5762 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.002231/0.867, allocations: 0.8992 MB / 0.7575 GB, free: 10.02 MB / 0.5762 GB Notification: Performance of preOpt evalFunc (simulation): time 0.002329/0.8694, allocations: 1.495 MB / 0.759 GB, free: 8.449 MB / 0.5762 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.456e-05/0.8694, allocations: 42.56 kB / 0.759 GB, free: 8.398 MB / 0.5762 GB Notification: Performance of pre-optimization done (n=73): time 3.146e-06/0.8695, allocations: 0 / 0.759 GB, free: 8.398 MB / 0.5762 GB Notification: Performance of matching and sorting (n=107): time 0.02619/0.8957, allocations: 8.099 MB / 0.7669 GB, free: 252 kB / 0.5762 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.114e-05/0.8957, allocations: 86.11 kB / 0.767 GB, free: 140 kB / 0.5762 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0008791/0.8966, allocations: 0.5886 MB / 0.7676 GB, free: 15.54 MB / 0.5919 GB Notification: Performance of collectPreVariables (initialization): time 0.0002105/0.8969, allocations: 41.7 kB / 0.7676 GB, free: 15.49 MB / 0.5919 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003056/0.8972, allocations: 415 kB / 0.768 GB, free: 15.08 MB / 0.5919 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003651/0.8975, allocations: 370.6 kB / 0.7683 GB, free: 14.71 MB / 0.5919 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004562/0.898, allocations: 262.7 kB / 0.7686 GB, free: 14.45 MB / 0.5919 GB Notification: Performance of setup shared object (initialization): time 0.000181/0.8982, allocations: 390.8 kB / 0.769 GB, free: 14.06 MB / 0.5919 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002755/0.901, allocations: 1.103 MB / 0.77 GB, free: 12.95 MB / 0.5919 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002862/0.9038, allocations: 1.448 MB / 0.7715 GB, free: 11.36 MB / 0.5919 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.005578/0.9094, allocations: 2.581 MB / 0.774 GB, free: 8.641 MB / 0.5919 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.161e-05/0.9095, allocations: 4 kB / 0.774 GB, free: 8.637 MB / 0.5919 GB Notification: Performance of matching and sorting (n=163) (initialization): time 0.01031/0.9198, allocations: 3.85 MB / 0.7777 GB, free: 4.762 MB / 0.5919 GB Notification: Performance of prepare postOptimizeDAE: time 3.571e-05/0.9199, allocations: 8 kB / 0.7778 GB, free: 4.754 MB / 0.5919 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.18e-05/0.9199, allocations: 12.53 kB / 0.7778 GB, free: 4.742 MB / 0.5919 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.004996/0.9249, allocations: 1.326 MB / 0.7791 GB, free: 3.402 MB / 0.5919 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00205/0.927, allocations: 459.2 kB / 0.7795 GB, free: 2.953 MB / 0.5919 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01566/0.9427, allocations: 11.17 MB / 0.7904 GB, free: 7.25 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002625/0.9453, allocations: 307.6 kB / 0.7907 GB, free: 6.949 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001897/0.9455, allocations: 67.95 kB / 0.7908 GB, free: 6.883 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.00324/0.9488, allocations: 1.314 MB / 0.792 GB, free: 5.562 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.002978/0.9518, allocations: 1.425 MB / 0.7934 GB, free: 3.992 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.005619/0.9574, allocations: 2.557 MB / 0.7959 GB, free: 1.297 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.252e-05/0.9575, allocations: 4.562 kB / 0.7959 GB, free: 1.293 MB / 0.6075 GB Notification: Performance of matching and sorting (n=163) (initialization_lambda0): time 0.009506/0.967, allocations: 3.62 MB / 0.7995 GB, free: 13.65 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 2.971e-05/0.967, allocations: 10.72 kB / 0.7995 GB, free: 13.64 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.223e-05/0.9671, allocations: 15.94 kB / 0.7995 GB, free: 13.62 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.003692/0.9708, allocations: 1.064 MB / 0.8005 GB, free: 12.55 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002077/0.9729, allocations: 467.2 kB / 0.801 GB, free: 12.09 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01278/0.9857, allocations: 10.26 MB / 0.811 GB, free: 1.293 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002248/0.988, allocations: 303.5 kB / 0.8113 GB, free: 0.9961 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001983/0.9882, allocations: 68.03 kB / 0.8114 GB, free: 0.9297 MB / 0.6231 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 46 * 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 (123): * Single equations (assignments): 119 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 4 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 3 systems {(2,8,100.0%), (2,8,100.0%), (3,9,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(3,9)} Notification: Performance of prepare postOptimizeDAE: time 0.00055/0.9887, allocations: 248 kB / 0.8116 GB, free: 0.6797 MB / 0.6231 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002426/0.989, allocations: 90.91 kB / 0.8117 GB, free: 0.5898 MB / 0.6231 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0101/0.9991, allocations: 3.723 MB / 0.8153 GB, free: 12.83 MB / 0.6387 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.07e-05/0.9992, allocations: 12 kB / 0.8153 GB, free: 12.82 MB / 0.6387 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.133e-05/0.9992, allocations: 8 kB / 0.8153 GB, free: 12.81 MB / 0.6387 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.844e-05/0.9992, allocations: 3.984 kB / 0.8153 GB, free: 12.81 MB / 0.6387 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01256/1.012, allocations: 5.434 MB / 0.8207 GB, free: 7.234 MB / 0.6387 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.743e-05/1.012, allocations: 4 kB / 0.8207 GB, free: 7.23 MB / 0.6387 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.00157/1.013, allocations: 351.4 kB / 0.821 GB, free: 6.887 MB / 0.6387 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.004454/1.018, allocations: 1.197 MB / 0.8222 GB, free: 5.676 MB / 0.6387 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0002266/1.018, allocations: 31.97 kB / 0.8222 GB, free: 5.645 MB / 0.6387 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.01416/1.032, allocations: 10.73 MB / 0.8327 GB, free: 10.38 MB / 0.6544 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.601e-06/1.032, allocations: 4 kB / 0.8327 GB, free: 10.37 MB / 0.6544 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01008/1.042, allocations: 3.634 MB / 0.8362 GB, free: 6.633 MB / 0.6544 GB Notification: Performance of postOpt removeConstants (simulation): time 0.000935/1.043, allocations: 335.9 kB / 0.8365 GB, free: 6.285 MB / 0.6544 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001926/1.044, allocations: 23.94 kB / 0.8366 GB, free: 6.262 MB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001975/1.046, allocations: 315.5 kB / 0.8369 GB, free: 5.953 MB / 0.6544 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0004963/1.046, allocations: 100.1 kB / 0.837 GB, free: 5.855 MB / 0.6544 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001275/1.046, allocations: 51.97 kB / 0.837 GB, free: 5.805 MB / 0.6544 GB Notification: Performance of sorting global known variables: time 0.0008754/1.047, allocations: 402.8 kB / 0.8374 GB, free: 5.414 MB / 0.6544 GB Notification: Performance of sort global known variables: time 8.61e-07/1.047, allocations: 0 / 0.8374 GB, free: 5.414 MB / 0.6544 GB Notification: Performance of remove unused functions: time 0.003448/1.051, allocations: 0.6016 MB / 0.838 GB, free: 4.812 MB / 0.6544 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 24 * 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 simulation (68): * Single equations (assignments): 64 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 4 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 3 systems {(3,9,100.0%), (2,8,100.0%), (2,8,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(3,9)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0004512/1.051, allocations: 139.5 kB / 0.8381 GB, free: 4.668 MB / 0.6544 GB Notification: Performance of simCode: created initialization part: time 0.01643/1.068, allocations: 5.677 MB / 0.8437 GB, free: 14.89 MB / 0.67 GB Notification: Performance of simCode: created event and clocks part: time 1.863e-05/1.068, allocations: 4.062 kB / 0.8437 GB, free: 14.88 MB / 0.67 GB Notification: Performance of simCode: created simulation system equations: time 0.005865/1.074, allocations: 2.106 MB / 0.8457 GB, free: 12.73 MB / 0.67 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001825/1.075, allocations: 153.3 kB / 0.8459 GB, free: 12.58 MB / 0.67 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01171/1.087, allocations: 3.871 MB / 0.8496 GB, free: 8.613 MB / 0.67 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001116/1.088, allocations: 1.11 MB / 0.8507 GB, free: 7.477 MB / 0.67 GB Notification: Performance of simCode: alias equations: time 0.002306/1.091, allocations: 0.546 MB / 0.8513 GB, free: 6.926 MB / 0.67 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003388/1.091, allocations: 75.39 kB / 0.8513 GB, free: 6.852 MB / 0.67 GB Notification: Performance of SimCode: time 1.923e-06/1.091, allocations: 0 / 0.8513 GB, free: 6.852 MB / 0.67 GB Notification: Performance of Templates: time 0.05732/1.148, allocations: 26.74 MB / 0.8774 GB, free: 12.24 MB / 0.7012 GB make -j1 -f Buildings_maint.7.0.x_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull.makefile (rm -f Buildings_maint.7.0.x_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull.pipe >> ../files/Buildings_maint.7.0.x_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull.sim & ./Buildings_maint.7.0.x_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.7.0.x_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull.pipe 2>&1)