Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.Fluid.Examples.Performance.Example1v1.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.Fluid.Examples.Performance.Example1v1,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Fluid.Examples.Performance.Example1v1") translateModel(Buildings.Fluid.Examples.Performance.Example1v1,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Fluid.Examples.Performance.Example1v1") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0103/0.0103, allocations: 102.3 kB / 15.73 MB, free: 5.578 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001144/0.001144, allocations: 194.8 kB / 16.67 MB, free: 5.52 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.412/1.412, allocations: 205.1 MB / 222.5 MB, free: 12.25 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo): time 1.371/1.371, allocations: 251.7 MB / 0.5094 GB, free: 412 kB / 430.1 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 0.001433/0.001433, allocations: 59.91 kB / 0.7258 GB, free: 4.652 MB / 0.5606 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.6085/0.61, allocations: 104.7 MB / 0.828 GB, free: 2.594 MB / 0.6231 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Examples.Performance.Example1v1): time 0.0672/0.6772, allocations: 72.61 MB / 0.899 GB, free: 9.727 MB / 0.7012 GB Notification: Performance of NFInst.instExpressions: time 0.03147/0.7087, allocations: 20.07 MB / 0.9186 GB, free: 5.609 MB / 0.7169 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.004092/0.7129, allocations: 95.38 kB / 0.9186 GB, free: 5.516 MB / 0.7169 GB Notification: Performance of NFTyping.typeComponents: time 0.003574/0.7165, allocations: 1.006 MB / 0.9196 GB, free: 4.504 MB / 0.7169 GB Notification: Performance of NFTyping.typeBindings: time 0.00741/0.724, allocations: 2.343 MB / 0.9219 GB, free: 2.152 MB / 0.7169 GB Notification: Performance of NFTyping.typeClassSections: time 0.005462/0.7294, allocations: 2.074 MB / 0.9239 GB, free: 96 kB / 0.7169 GB Notification: Performance of NFFlatten.flatten: time 0.009167/0.7386, allocations: 8.004 MB / 0.9318 GB, free: 8.066 MB / 0.7325 GB Notification: Performance of NFFlatten.resolveConnections: time 0.007591/0.7462, allocations: 6.113 MB / 0.9377 GB, free: 1.887 MB / 0.7325 GB Notification: Performance of NFEvalConstants.evaluate: time 0.007754/0.754, allocations: 3.258 MB / 0.9409 GB, free: 14.62 MB / 0.7481 GB Notification: Performance of NFSimplifyModel.simplify: time 0.004733/0.7588, allocations: 2.486 MB / 0.9433 GB, free: 12.12 MB / 0.7481 GB Notification: Performance of NFPackage.collectConstants: time 0.001252/0.7601, allocations: 252 kB / 0.9436 GB, free: 11.88 MB / 0.7481 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004332/0.7644, allocations: 1.377 MB / 0.9449 GB, free: 10.5 MB / 0.7481 GB Notification: Performance of NFScalarize.scalarize: time 0.001503/0.766, allocations: 0.7549 MB / 0.9457 GB, free: 9.738 MB / 0.7481 GB Notification: Performance of NFVerifyModel.verify: time 0.00311/0.7691, allocations: 1.768 MB / 0.9474 GB, free: 7.961 MB / 0.7481 GB Notification: Performance of NFConvertDAE.convert: time 0.006976/0.7761, allocations: 4.716 MB / 0.952 GB, free: 3.23 MB / 0.7481 GB Notification: Performance of FrontEnd - DAE generated: time 5.2e-06/0.7761, allocations: 0 / 0.952 GB, free: 3.23 MB / 0.7481 GB Notification: Performance of FrontEnd: time 1.793e-06/0.7762, allocations: 4 kB / 0.952 GB, free: 3.227 MB / 0.7481 GB Notification: Performance of Transformations before backend: time 0.0001347/0.7763, allocations: 0 / 0.952 GB, free: 3.227 MB / 0.7481 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 398 * Number of variables: 398 Notification: Performance of Generate backend data structure: time 0.007546/0.7838, allocations: 3.927 MB / 0.9558 GB, free: 15.21 MB / 0.7637 GB Notification: Performance of prepare preOptimizeDAE: time 4.525e-05/0.7839, allocations: 8.031 kB / 0.9558 GB, free: 15.21 MB / 0.7637 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.00227/0.7862, allocations: 0.5461 MB / 0.9564 GB, free: 14.66 MB / 0.7637 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.005457/0.7917, allocations: 2.744 MB / 0.959 GB, free: 11.85 MB / 0.7637 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.000107/0.7918, allocations: 135.1 kB / 0.9592 GB, free: 11.71 MB / 0.7637 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.000307/0.7921, allocations: 184 kB / 0.9594 GB, free: 11.54 MB / 0.7637 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.003639/0.7958, allocations: 2.326 MB / 0.9616 GB, free: 9.055 MB / 0.7637 GB Notification: Performance of preOpt findStateOrder (simulation): time 4.004e-05/0.7958, allocations: 3.938 kB / 0.9616 GB, free: 9.051 MB / 0.7637 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001744/0.796, allocations: 68 kB / 0.9617 GB, free: 8.984 MB / 0.7637 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.931e-05/0.796, allocations: 40 kB / 0.9617 GB, free: 8.945 MB / 0.7637 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003426/0.7995, allocations: 1.868 MB / 0.9636 GB, free: 7.07 MB / 0.7637 GB 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 0.0144/0.8139, allocations: 11.07 MB / 0.9744 GB, free: 11.49 MB / 0.7794 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002637/0.8165, allocations: 1.338 MB / 0.9757 GB, free: 10.16 MB / 0.7794 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001613/0.8182, allocations: 1.005 MB / 0.9767 GB, free: 9.148 MB / 0.7794 GB Notification: Performance of preOpt evalFunc (simulation): time 0.006162/0.8243, allocations: 3.623 MB / 0.9802 GB, free: 5.258 MB / 0.7794 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.00143/0.8258, allocations: 0.7702 MB / 0.9809 GB, free: 4.477 MB / 0.7794 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.001259/0.8271, allocations: 238.8 kB / 0.9812 GB, free: 4.242 MB / 0.7794 GB Notification: Performance of pre-optimization done (n=95): time 5.139e-06/0.8271, allocations: 0 / 0.9812 GB, free: 4.242 MB / 0.7794 GB Notification: Performance of matching and sorting (n=95): time 0.01168/0.8388, allocations: 4.16 MB / 0.9852 GB, free: 28 kB / 0.7794 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.912e-05/0.8389, allocations: 64.34 kB / 0.9853 GB, free: 15.95 MB / 0.795 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003726/0.8426, allocations: 2.867 MB / 0.9881 GB, free: 13.09 MB / 0.795 GB Notification: Performance of collectPreVariables (initialization): time 0.0002306/0.8429, allocations: 61.69 kB / 0.9882 GB, free: 13.02 MB / 0.795 GB Notification: Performance of collectInitialEqns (initialization): time 0.001164/0.844, allocations: 1.414 MB / 0.9895 GB, free: 11.59 MB / 0.795 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003175/0.8444, allocations: 339.2 kB / 0.9899 GB, free: 11.25 MB / 0.795 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004672/0.8448, allocations: 347.6 kB / 0.9902 GB, free: 10.9 MB / 0.795 GB Notification: Performance of setup shared object (initialization): time 8.52e-05/0.8449, allocations: 305.1 kB / 0.9905 GB, free: 10.6 MB / 0.795 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001325/0.8463, allocations: 0.677 MB / 0.9911 GB, free: 9.922 MB / 0.795 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001876/0.8481, allocations: 1.437 MB / 0.9925 GB, free: 8.133 MB / 0.795 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.002935/0.8511, allocations: 1.915 MB / 0.9944 GB, free: 6.008 MB / 0.795 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.074e-05/0.8511, allocations: 7.938 kB / 0.9944 GB, free: 6 MB / 0.795 GB Notification: Performance of matching and sorting (n=183) (initialization): time 0.006031/0.8572, allocations: 2.827 MB / 0.9972 GB, free: 3.148 MB / 0.795 GB Notification: Performance of prepare postOptimizeDAE: time 5.373e-05/0.8572, allocations: 44.92 kB / 0.9972 GB, free: 3.102 MB / 0.795 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.283e-05/0.8573, allocations: 23.92 kB / 0.9972 GB, free: 3.078 MB / 0.795 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.002357/0.8596, allocations: 0.6848 MB / 0.9979 GB, free: 2.387 MB / 0.795 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001204/0.8608, allocations: 293.3 kB / 0.9982 GB, free: 2.102 MB / 0.795 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001741/0.8626, allocations: 1.905 MB / 1 GB, free: 148 kB / 0.795 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001848/0.8645, allocations: 97.02 kB / 1 GB, free: 52 kB / 0.795 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001641/0.8646, allocations: 88 kB / 1 GB, free: 15.96 MB / 0.8106 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.002152/0.8668, allocations: 1.284 MB / 1.001 GB, free: 14.68 MB / 0.8106 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001584/0.8684, allocations: 1.384 MB / 1.003 GB, free: 12.95 MB / 0.8106 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.002597/0.871, allocations: 1.82 MB / 1.005 GB, free: 10.91 MB / 0.8106 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 9.298e-06/0.871, allocations: 7.984 kB / 1.005 GB, free: 10.9 MB / 0.8106 GB Notification: Performance of matching and sorting (n=183) (initialization_lambda0): time 0.004797/0.8758, allocations: 2.689 MB / 1.007 GB, free: 8.164 MB / 0.8106 GB Notification: Performance of prepare postOptimizeDAE: time 4.106e-05/0.8759, allocations: 41.7 kB / 1.007 GB, free: 8.117 MB / 0.8106 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.666e-05/0.8759, allocations: 12 kB / 1.007 GB, free: 8.105 MB / 0.8106 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0008914/0.8768, allocations: 481.2 kB / 1.008 GB, free: 7.629 MB / 0.8106 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001157/0.878, allocations: 293.1 kB / 1.008 GB, free: 7.34 MB / 0.8106 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.006578/0.8846, allocations: 6.328 MB / 1.014 GB, free: 0.7266 MB / 0.8106 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002066/0.8867, allocations: 113.5 kB / 1.014 GB, free: 0.6094 MB / 0.8106 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001515/0.8868, allocations: 79.91 kB / 1.014 GB, free: 0.5312 MB / 0.8106 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 66 * Number of states: 0 () * Number of discrete variables: 8 (pulse.count,$PRE.pulse.count,pulse.T_start,$PRE.pulse.T_start,$whenCondition1,from_dp.y,nRes.y,allowFlowReversal.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (135): * Single equations (assignments): 131 * Array equations: 1 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * 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): 2 systems {(1,40), (2,5)} Notification: Performance of prepare postOptimizeDAE: time 0.0004868/0.8873, allocations: 286 kB / 1.015 GB, free: 252 kB / 0.8106 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.00048/0.8878, allocations: 292.5 kB / 1.015 GB, free: 15.95 MB / 0.8262 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004756/0.8926, allocations: 2.435 MB / 1.017 GB, free: 13.5 MB / 0.8262 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.985e-05/0.8926, allocations: 12 kB / 1.017 GB, free: 13.48 MB / 0.8262 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.502e-06/0.8926, allocations: 4 kB / 1.017 GB, free: 13.48 MB / 0.8262 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.003387/0.896, allocations: 2.055 MB / 1.019 GB, free: 11.36 MB / 0.8262 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.007896/0.9039, allocations: 4.375 MB / 1.024 GB, free: 6.902 MB / 0.8262 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.635e-06/0.904, allocations: 64 / 1.024 GB, free: 6.902 MB / 0.8262 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0008348/0.9048, allocations: 165.6 kB / 1.024 GB, free: 6.742 MB / 0.8262 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0009947/0.9058, allocations: 485 kB / 1.024 GB, free: 6.262 MB / 0.8262 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.901e-05/0.9059, allocations: 31.98 kB / 1.024 GB, free: 6.23 MB / 0.8262 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001682/0.9076, allocations: 1.846 MB / 1.026 GB, free: 4.332 MB / 0.8262 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.627e-06/0.9076, allocations: 4.031 kB / 1.026 GB, free: 4.328 MB / 0.8262 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.005444/0.913, allocations: 3.115 MB / 1.029 GB, free: 1.18 MB / 0.8262 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001276/0.9143, allocations: 481.1 kB / 1.03 GB, free: 0.6875 MB / 0.8262 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0003044/0.9147, allocations: 24 kB / 1.03 GB, free: 0.6641 MB / 0.8262 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001065/0.9157, allocations: 75.78 kB / 1.03 GB, free: 0.5898 MB / 0.8262 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001901/0.9159, allocations: 76.83 kB / 1.03 GB, free: 0.5156 MB / 0.8262 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 9.282e-05/0.916, allocations: 47.97 kB / 1.03 GB, free: 480 kB / 0.8262 GB Notification: Performance of sorting global known variables: time 0.00268/0.9187, allocations: 1.955 MB / 1.032 GB, free: 14.52 MB / 0.8419 GB Notification: Performance of sort global known variables: time 4e-07/0.9187, allocations: 0 / 1.032 GB, free: 14.52 MB / 0.8419 GB Notification: Performance of remove unused functions: time 0.003465/0.9222, allocations: 1.341 MB / 1.033 GB, free: 13.18 MB / 0.8419 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 2 (pump.vol.dynBal.U,hea.outCon.T) * Number of discrete variables: 3 ($whenCondition1,pulse.T_start,pulse.count) * Number of discrete states: 1 (pulse.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (79): * Single equations (assignments): 71 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 4 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * 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): 2 systems {(2,5), (1,40)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001132/0.9234, allocations: 465.5 kB / 1.033 GB, free: 12.72 MB / 0.8419 GB Notification: Performance of simCode: created initialization part: time 0.005946/0.9293, allocations: 3.176 MB / 1.037 GB, free: 9.508 MB / 0.8419 GB Notification: Performance of simCode: created event and clocks part: time 5.49e-06/0.9293, allocations: 0 / 1.037 GB, free: 9.508 MB / 0.8419 GB Notification: Performance of simCode: created simulation system equations: time 0.001525/0.9309, allocations: 0.7998 MB / 1.037 GB, free: 8.707 MB / 0.8419 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.006707/0.9376, allocations: 1.269 MB / 1.039 GB, free: 7.453 MB / 0.8419 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.009385/0.947, allocations: 5.12 MB / 1.044 GB, free: 2.305 MB / 0.8419 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001477/0.9485, allocations: 2.05 MB / 1.046 GB, free: 232 kB / 0.8419 GB Notification: Performance of simCode: alias equations: time 0.002617/0.9511, allocations: 0.6756 MB / 1.046 GB, free: 15.55 MB / 0.8575 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004648/0.9516, allocations: 219.3 kB / 1.046 GB, free: 15.33 MB / 0.8575 GB Notification: Performance of SimCode: time 5.91e-07/0.9516, allocations: 0 / 1.046 GB, free: 15.33 MB / 0.8575 GB Notification: Performance of Templates: time 0.0868/1.038, allocations: 55.12 MB / 1.1 GB, free: 8.992 MB / 0.9044 GB make -j1 -f Buildings_maint.7.0.x_Buildings.Fluid.Examples.Performance.Example1v1.makefile (rm -f Buildings_maint.7.0.x_Buildings.Fluid.Examples.Performance.Example1v1.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.Fluid.Examples.Performance.Example1v1.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.Fluid.Examples.Performance.Example1v1.pipe >> ../files/Buildings_maint.7.0.x_Buildings.Fluid.Examples.Performance.Example1v1.sim & ./Buildings_maint.7.0.x_Buildings.Fluid.Examples.Performance.Example1v1 -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.7.0.x_Buildings.Fluid.Examples.Performance.Example1v1.pipe 2>&1)