Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter.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: translateModel(Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter") translateModel(Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001386/0.001392, allocations: 108.3 kB / 16.36 MB, free: 6.012 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001515/0.001515, allocations: 191.6 kB / 17.3 MB, free: 5.617 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.406/1.406, allocations: 205.1 MB / 223.2 MB, free: 12.26 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo): time 1.922/1.922, allocations: 292.3 MB / 0.5496 GB, free: 17.46 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 0.001454/0.001454, allocations: 64.47 kB / 0.6729 GB, free: 5.875 MB / 0.545 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2171/0.2186, allocations: 114.6 MB / 0.7848 GB, free: 3.199 MB / 0.6544 GB Notification: Performance of NFInst.instantiate(Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter): time 0.372/0.5906, allocations: 3.332 MB / 0.788 GB, free: 47.32 MB / 0.6544 GB Notification: Performance of NFInst.instExpressions: time 0.003092/0.5937, allocations: 2.193 MB / 0.7902 GB, free: 47.22 MB / 0.6544 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0001768/0.5939, allocations: 7.5 kB / 0.7902 GB, free: 47.22 MB / 0.6544 GB Notification: Performance of NFTyping.typeComponents: time 0.0009098/0.5949, allocations: 283.3 kB / 0.7905 GB, free: 47.16 MB / 0.6544 GB Notification: Performance of NFTyping.typeBindings: time 0.0005738/0.5954, allocations: 243.4 kB / 0.7907 GB, free: 47.11 MB / 0.6544 GB Notification: Performance of NFTyping.typeClassSections: time 0.0008298/0.5963, allocations: 293 kB / 0.791 GB, free: 47.07 MB / 0.6544 GB Notification: Performance of NFFlatten.flatten: time 0.000413/0.5967, allocations: 383.8 kB / 0.7913 GB, free: 47.05 MB / 0.6544 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0003619/0.5971, allocations: 209.3 kB / 0.7915 GB, free: 47.04 MB / 0.6544 GB Notification: Performance of NFEvalConstants.evaluate: time 0.000204/0.5973, allocations: 155.9 kB / 0.7917 GB, free: 47.01 MB / 0.6544 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0003259/0.5976, allocations: 179 kB / 0.7919 GB, free: 46.97 MB / 0.6544 GB Notification: Performance of NFPackage.collectConstants: time 4.713e-05/0.5977, allocations: 22.5 kB / 0.7919 GB, free: 46.97 MB / 0.6544 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0006771/0.5984, allocations: 425.4 kB / 0.7923 GB, free: 46.91 MB / 0.6544 GB Notification: Performance of NFScalarize.scalarize: time 9.646e-05/0.5985, allocations: 97.06 kB / 0.7924 GB, free: 46.9 MB / 0.6544 GB Notification: Performance of NFVerifyModel.verify: time 0.0001188/0.5986, allocations: 139.6 kB / 0.7925 GB, free: 46.86 MB / 0.6544 GB Notification: Performance of NFConvertDAE.convert: time 0.0005676/0.5992, allocations: 0.5087 MB / 0.793 GB, free: 46.77 MB / 0.6544 GB Notification: Performance of FrontEnd - DAE generated: time 3.987e-06/0.5992, allocations: 2.156 kB / 0.793 GB, free: 46.77 MB / 0.6544 GB Notification: Performance of FrontEnd: time 1.493e-06/0.5992, allocations: 0 / 0.793 GB, free: 46.77 MB / 0.6544 GB Notification: Performance of Transformations before backend: time 6.593e-06/0.5992, allocations: 3.312 kB / 0.793 GB, free: 46.77 MB / 0.6544 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 63 * Number of variables: 63 Notification: Performance of Generate backend data structure: time 0.000866/0.6001, allocations: 0.6123 MB / 0.7936 GB, free: 46.3 MB / 0.6544 GB Notification: Performance of prepare preOptimizeDAE: time 3.35e-05/0.6001, allocations: 10.03 kB / 0.7936 GB, free: 46.3 MB / 0.6544 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0008226/0.601, allocations: 120.4 kB / 0.7937 GB, free: 46.28 MB / 0.6544 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0003201/0.6013, allocations: 269.7 kB / 0.794 GB, free: 46.06 MB / 0.6544 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.783e-05/0.6013, allocations: 23.42 kB / 0.794 GB, free: 46.05 MB / 0.6544 GB Notification: Performance of preOpt expandDerOperator (simulation): time 4.201e-05/0.6014, allocations: 18.31 kB / 0.794 GB, free: 46.05 MB / 0.6544 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.000601/0.602, allocations: 419.4 kB / 0.7944 GB, free: 45.95 MB / 0.6544 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.303e-05/0.602, allocations: 2.906 kB / 0.7944 GB, free: 45.95 MB / 0.6544 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 3.393e-05/0.602, allocations: 16.41 kB / 0.7945 GB, free: 45.95 MB / 0.6544 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 5.507e-05/0.6021, allocations: 33.75 kB / 0.7945 GB, free: 45.94 MB / 0.6544 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0005679/0.6027, allocations: 345.5 kB / 0.7948 GB, free: 45.94 MB / 0.6544 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002002/0.6047, allocations: 2.037 MB / 0.7968 GB, free: 44.49 MB / 0.6544 GB Notification: Performance of preOpt comSubExp (simulation): time 0.000698/0.6054, allocations: 360.8 kB / 0.7972 GB, free: 44.44 MB / 0.6544 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003676/0.6058, allocations: 191.2 kB / 0.7973 GB, free: 44.41 MB / 0.6544 GB Notification: Performance of preOpt evalFunc (simulation): time 8.959e-05/0.6059, allocations: 91.25 kB / 0.7974 GB, free: 44.32 MB / 0.6544 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 1.685e-05/0.6059, allocations: 40.81 kB / 0.7975 GB, free: 44.28 MB / 0.6544 GB Notification: Performance of pre-optimization done (n=22): time 2.154e-06/0.6059, allocations: 0 / 0.7975 GB, free: 44.28 MB / 0.6544 GB Notification: Performance of matching and sorting (n=34): time 0.004737/0.6107, allocations: 1.575 MB / 0.799 GB, free: 43.9 MB / 0.6544 GB Notification: Performance of inlineWhenForInitialization (initialization): time 2.96e-05/0.6107, allocations: 88.73 kB / 0.7991 GB, free: 43.8 MB / 0.6544 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0002125/0.6109, allocations: 237 kB / 0.7993 GB, free: 43.66 MB / 0.6544 GB Notification: Performance of collectPreVariables (initialization): time 2.888e-05/0.611, allocations: 29.7 kB / 0.7993 GB, free: 43.62 MB / 0.6544 GB Notification: Performance of collectInitialEqns (initialization): time 7.818e-05/0.6111, allocations: 182 kB / 0.7995 GB, free: 43.46 MB / 0.6544 GB Notification: Performance of collectInitialBindings (initialization): time 6.61e-05/0.6111, allocations: 118.2 kB / 0.7996 GB, free: 43.37 MB / 0.6544 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001203/0.6113, allocations: 76.06 kB / 0.7997 GB, free: 43.33 MB / 0.6544 GB Notification: Performance of setup shared object (initialization): time 5.741e-05/0.6113, allocations: 339.3 kB / 0.8 GB, free: 43 MB / 0.6544 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003711/0.6117, allocations: 201 kB / 0.8002 GB, free: 42.94 MB / 0.6544 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004051/0.6121, allocations: 300.5 kB / 0.8005 GB, free: 42.75 MB / 0.6544 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0007718/0.6129, allocations: 0.5053 MB / 0.801 GB, free: 42.48 MB / 0.6544 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.644e-06/0.6129, allocations: 0.5625 kB / 0.801 GB, free: 42.48 MB / 0.6544 GB Notification: Performance of matching and sorting (n=49) (initialization): time 0.001295/0.6142, allocations: 0.6683 MB / 0.8016 GB, free: 42.21 MB / 0.6544 GB Notification: Performance of prepare postOptimizeDAE: time 2.107e-05/0.6142, allocations: 6 kB / 0.8017 GB, free: 42.21 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.365e-05/0.6143, allocations: 9.547 kB / 0.8017 GB, free: 42.21 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005157/0.6148, allocations: 140.5 kB / 0.8018 GB, free: 42.15 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004292/0.6152, allocations: 93.81 kB / 0.8019 GB, free: 42.15 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002423/0.6177, allocations: 4.165 MB / 0.806 GB, free: 38.17 MB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003808/0.6181, allocations: 31.12 kB / 0.806 GB, free: 38.17 MB / 0.6544 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.82e-05/0.6181, allocations: 23.3 kB / 0.806 GB, free: 38.16 MB / 0.6544 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0005288/0.6186, allocations: 318.7 kB / 0.8063 GB, free: 38 MB / 0.6544 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0004365/0.6191, allocations: 307.5 kB / 0.8066 GB, free: 37.81 MB / 0.6544 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0008462/0.6199, allocations: 0.5178 MB / 0.8071 GB, free: 37.52 MB / 0.6544 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.035e-06/0.62, allocations: 0 / 0.8071 GB, free: 37.52 MB / 0.6544 GB Notification: Performance of matching and sorting (n=49) (initialization_lambda0): time 0.00137/0.6213, allocations: 0.6495 MB / 0.8077 GB, free: 37.27 MB / 0.6544 GB Notification: Performance of prepare postOptimizeDAE: time 1.368e-05/0.6214, allocations: 6.312 kB / 0.8077 GB, free: 37.27 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.282e-06/0.6214, allocations: 4.5 kB / 0.8077 GB, free: 37.27 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004581/0.6218, allocations: 149.9 kB / 0.8079 GB, free: 37.21 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004253/0.6223, allocations: 92.84 kB / 0.808 GB, free: 37.2 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002419/0.6247, allocations: 4.173 MB / 0.8121 GB, free: 33.22 MB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003881/0.6251, allocations: 35.36 kB / 0.8121 GB, free: 33.21 MB / 0.6544 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.33e-05/0.6252, allocations: 13.38 kB / 0.8121 GB, free: 33.21 MB / 0.6544 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 14 * 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 (45): * Single equations (assignments): 41 * 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): 2 systems {(1,1,100.0%), (1,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 2 systems {(1,1), (1,1)} Notification: Performance of prepare postOptimizeDAE: time 0.000186/0.6254, allocations: 211.6 kB / 0.8123 GB, free: 33.01 MB / 0.6544 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 9.381e-05/0.6254, allocations: 30.25 kB / 0.8123 GB, free: 33 MB / 0.6544 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001369/0.6268, allocations: 0.6071 MB / 0.8129 GB, free: 32.73 MB / 0.6544 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.682e-06/0.6268, allocations: 5.422 kB / 0.8129 GB, free: 32.73 MB / 0.6544 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.439e-06/0.6269, allocations: 1.859 kB / 0.8129 GB, free: 32.73 MB / 0.6544 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.953e-06/0.6269, allocations: 3.734 kB / 0.8129 GB, free: 32.73 MB / 0.6544 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002245/0.6291, allocations: 1.316 MB / 0.8142 GB, free: 31.95 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.671e-06/0.6291, allocations: 5.844 kB / 0.8142 GB, free: 31.95 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002748/0.6294, allocations: 59.39 kB / 0.8143 GB, free: 31.95 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004372/0.6299, allocations: 152.7 kB / 0.8144 GB, free: 31.88 MB / 0.6544 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.636e-05/0.6299, allocations: 8.594 kB / 0.8144 GB, free: 31.88 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.00226/0.6322, allocations: 4.191 MB / 0.8185 GB, free: 27.88 MB / 0.6544 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.757e-06/0.6322, allocations: 2.562 kB / 0.8185 GB, free: 27.88 MB / 0.6544 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0012/0.6334, allocations: 0.7804 MB / 0.8193 GB, free: 27.38 MB / 0.6544 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001723/0.6336, allocations: 132.5 kB / 0.8194 GB, free: 27.27 MB / 0.6544 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 4.405e-05/0.6336, allocations: 13.61 kB / 0.8194 GB, free: 27.26 MB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000316/0.634, allocations: 37.53 kB / 0.8195 GB, free: 27.25 MB / 0.6544 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001067/0.6341, allocations: 31.78 kB / 0.8195 GB, free: 27.24 MB / 0.6544 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.61e-05/0.6341, allocations: 13.69 kB / 0.8195 GB, free: 27.23 MB / 0.6544 GB Notification: Performance of sorting global known variables: time 0.0001665/0.6343, allocations: 172.4 kB / 0.8197 GB, free: 27.13 MB / 0.6544 GB Notification: Performance of sort global known variables: time 1.1e-07/0.6343, allocations: 0 / 0.8197 GB, free: 27.13 MB / 0.6544 GB Notification: Performance of remove unused functions: time 0.0008436/0.6351, allocations: 169 kB / 0.8198 GB, free: 27.1 MB / 0.6544 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 10 * 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 (31): * Single equations (assignments): 27 * 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): 2 systems {(1,1,100.0%), (1,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 2 systems {(1,2), (1,2)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0001896/0.6353, allocations: 129.5 kB / 0.82 GB, free: 27 MB / 0.6544 GB Notification: Performance of simCode: created initialization part: time 0.002104/0.6375, allocations: 1.239 MB / 0.8212 GB, free: 26.3 MB / 0.6544 GB Notification: Performance of simCode: created event and clocks part: time 4.028e-06/0.6375, allocations: 1.531 kB / 0.8212 GB, free: 26.3 MB / 0.6544 GB Notification: Performance of simCode: created simulation system equations: time 0.0007157/0.6382, allocations: 482.6 kB / 0.8216 GB, free: 26.01 MB / 0.6544 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0006129/0.6388, allocations: 62.42 kB / 0.8217 GB, free: 25.99 MB / 0.6544 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001377/0.6402, allocations: 0.7536 MB / 0.8224 GB, free: 25.54 MB / 0.6544 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0003431/0.6406, allocations: 0.8116 MB / 0.8232 GB, free: 24.82 MB / 0.6544 GB Notification: Performance of simCode: alias equations: time 0.0003606/0.6409, allocations: 114.9 kB / 0.8233 GB, free: 24.81 MB / 0.6544 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 8.143e-05/0.641, allocations: 25.23 kB / 0.8234 GB, free: 24.8 MB / 0.6544 GB Notification: Performance of SimCode: time 1.172e-06/0.641, allocations: 0 / 0.8234 GB, free: 24.8 MB / 0.6544 GB Notification: Performance of Templates: time 0.01329/0.6543, allocations: 6.315 MB / 0.8295 GB, free: 24.51 MB / 0.6544 GB make -j1 -f Buildings_8_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter.makefile (rm -f Buildings_8_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter.pipe ; mkfifo Buildings_8_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter.pipe ; head -c 1048576 < Buildings_8_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter.pipe >> ../files/Buildings_8_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter.sim & ./Buildings_8_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter -abortSlowSimulation -alarm=480 -s gbode -lv LOG_STATS > Buildings_8_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter.pipe 2>&1)