Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8.0.0_Buildings.Fluid.Examples.FlowSystem.Simplified6.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.0/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+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/ModelicaServices 3.2.3+maint.om/package.mo", uses=false) Using package ModelicaServices with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+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 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo) Using package Buildings with version 8.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.0/package.mo) Running command: "" <> buildModelFMU(Buildings.Fluid.Examples.FlowSystem.Simplified6,fileNamePrefix="Buildings_8_0_0_Buildings_Fluid_Examples_FlowSystem_Simplified6",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.Examples.FlowSystem.Simplified6,fileNamePrefix="Buildings_8_0_0_Buildings_Fluid_Examples_FlowSystem_Simplified6",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.0/package.mo): time 2.733/2.733, allocations: 287.5 MB / 302.4 MB, free: 8.367 MB / 234.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.001386/0.001386, allocations: 174.2 kB / 371 MB, free: 10.86 MB / 298.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 2.044/2.044, allocations: 205.4 MB / 0.6297 GB, free: 10.58 MB / 458.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.0009518/0.000952, allocations: 93.34 kB / 0.743 GB, free: 6.598 MB / 0.5573 GB Notification: Performance of FrontEnd - loaded program: time 0.0004707/0.0004709, allocations: 12.2 kB / 0.8659 GB, free: 140.9 MB / 0.6198 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2013/0.2018, allocations: 115.3 MB / 0.9784 GB, free: 28.29 MB / 0.6198 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Examples.FlowSystem.Simplified6): time 1.112/1.314, allocations: 329.6 MB / 1.3 GB, free: 5.988 MB / 0.823 GB Notification: Performance of NFInst.instExpressions: time 0.1547/1.469, allocations: 72.95 MB / 1.372 GB, free: 12.91 MB / 0.9011 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.01583/1.485, allocations: 373.2 kB / 1.372 GB, free: 12.54 MB / 0.9011 GB Notification: Performance of NFTyping.typeComponents: time 0.01586/1.501, allocations: 3.14 MB / 1.375 GB, free: 9.379 MB / 0.9011 GB Notification: Performance of NFTyping.typeBindings: time 0.03718/1.538, allocations: 8.836 MB / 1.384 GB, free: 0.5156 MB / 0.9011 GB Notification: Performance of NFTyping.typeClassSections: time 0.02556/1.563, allocations: 6.017 MB / 1.39 GB, free: 10.56 MB / 0.9167 GB Notification: Performance of NFFlatten.flatten: time 0.05792/1.621, allocations: 32.57 MB / 1.421 GB, free: 9.891 MB / 0.948 GB Notification: Performance of NFFlatten.resolveConnections: time 0.89/2.512, allocations: 13.04 MB / 1.434 GB, free: 49.73 MB / 0.948 GB Notification: Performance of NFEvalConstants.evaluate: time 0.03254/2.544, allocations: 10.11 MB / 1.444 GB, free: 49.73 MB / 0.948 GB Notification: Performance of NFSimplifyModel.simplify: time 0.02638/2.571, allocations: 9.044 MB / 1.453 GB, free: 49.72 MB / 0.948 GB Notification: Performance of NFPackage.collectConstants: time 0.006252/2.577, allocations: 0.4959 MB / 1.453 GB, free: 49.72 MB / 0.948 GB Notification: Performance of NFFlatten.collectFunctions: time 0.02005/2.597, allocations: 2.863 MB / 1.456 GB, free: 49.72 MB / 0.948 GB Notification: Performance of NFScalarize.scalarize: time 0.008213/2.605, allocations: 2.886 MB / 1.459 GB, free: 49.72 MB / 0.948 GB Notification: Performance of NFVerifyModel.verify: time 0.009851/2.615, allocations: 2.644 MB / 1.461 GB, free: 49.69 MB / 0.948 GB Notification: Performance of NFConvertDAE.convert: time 0.02959/2.645, allocations: 14.71 MB / 1.476 GB, free: 48.77 MB / 0.948 GB Notification: Performance of FrontEnd - DAE generated: time 7.765e-06/2.645, allocations: 0 / 1.476 GB, free: 48.77 MB / 0.948 GB Notification: Performance of FrontEnd: time 2.986e-06/2.645, allocations: 2.812 kB / 1.476 GB, free: 48.77 MB / 0.948 GB Notification: Performance of Transformations before backend: time 0.0008176/2.646, allocations: 0 / 1.476 GB, free: 48.77 MB / 0.948 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 1521 * Number of variables: 1521 Notification: Performance of Generate backend data structure: time 0.05312/2.699, allocations: 13.93 MB / 1.489 GB, free: 42.86 MB / 0.948 GB Notification: Performance of prepare preOptimizeDAE: time 4.803e-05/2.699, allocations: 9.531 kB / 1.489 GB, free: 42.86 MB / 0.948 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.003724/2.703, allocations: 0.7808 MB / 1.49 GB, free: 42.79 MB / 0.948 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01554/2.718, allocations: 2.225 MB / 1.492 GB, free: 41.95 MB / 0.948 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.04274/2.761, allocations: 13.22 MB / 1.505 GB, free: 40.22 MB / 0.948 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.003215/2.764, allocations: 0.7877 MB / 1.506 GB, free: 40.18 MB / 0.948 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.004/2.768, allocations: 0.6881 MB / 1.507 GB, free: 40.18 MB / 0.948 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.03325/2.802, allocations: 8.95 MB / 1.515 GB, free: 39.11 MB / 0.948 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0003265/2.802, allocations: 14.72 kB / 1.515 GB, free: 39.11 MB / 0.948 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.002952/2.805, allocations: 253.1 kB / 1.516 GB, free: 39.11 MB / 0.948 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0002196/2.805, allocations: 156.3 kB / 1.516 GB, free: 39.11 MB / 0.948 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.02902/2.834, allocations: 7.423 MB / 1.523 GB, free: 39.02 MB / 0.948 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 0.1128/2.947, allocations: 51.13 MB / 1.573 GB, free: 22.89 MB / 0.9636 GB Notification: Performance of preOpt comSubExp (simulation): time 0.01651/2.964, allocations: 5.54 MB / 1.578 GB, free: 21.94 MB / 0.9636 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.01134/2.975, allocations: 3.998 MB / 1.582 GB, free: 21.32 MB / 0.9636 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 evalFunc (simulation): time 0.0519/3.027, allocations: 13.71 MB / 1.596 GB, free: 15.15 MB / 0.9636 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.01133/3.038, allocations: 3.729 MB / 1.599 GB, free: 14.1 MB / 0.9636 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.01486/3.053, allocations: 1.863 MB / 1.601 GB, free: 13.17 MB / 0.9636 GB Notification: Performance of pre-optimization done (n=320): time 2.202e-05/3.053, allocations: 4 kB / 1.601 GB, free: 13.17 MB / 0.9636 GB Notification: Performance of matching and sorting (n=506): time 0.3398/3.393, allocations: 53.64 MB / 1.654 GB, free: 15 MB / 1.01 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001122/3.393, allocations: 103.4 kB / 1.654 GB, free: 14.89 MB / 1.01 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.03992/3.433, allocations: 15.22 MB / 1.669 GB, free: 4.074 MB / 1.01 GB Notification: Performance of collectPreVariables (initialization): time 0.002163/3.435, allocations: 165.6 kB / 1.669 GB, free: 4.004 MB / 1.01 GB Notification: Performance of collectInitialEqns (initialization): time 0.01038/3.446, allocations: 6.212 MB / 1.675 GB, free: 1.285 MB / 1.01 GB Notification: Performance of collectInitialBindings (initialization): time 0.003574/3.449, allocations: 1.707 MB / 1.676 GB, free: 15.82 MB / 1.026 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001645/3.451, allocations: 143.6 kB / 1.677 GB, free: 15.79 MB / 1.026 GB Notification: Performance of setup shared object (initialization): time 0.000703/3.452, allocations: 0.5873 MB / 1.677 GB, free: 15.31 MB / 1.026 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.02124/3.473, allocations: 5.158 MB / 1.682 GB, free: 11.62 MB / 1.026 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.02467/3.498, allocations: 7.815 MB / 1.69 GB, free: 4.391 MB / 1.026 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.02318/3.521, allocations: 5.868 MB / 1.696 GB, free: 404 kB / 1.026 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.611e-05/3.521, allocations: 16 kB / 1.696 GB, free: 388 kB / 1.026 GB Notification: Performance of matching and sorting (n=953) (initialization): time 0.07876/3.6, allocations: 17.23 MB / 1.712 GB, free: 3.504 MB / 1.042 GB Notification: Performance of prepare postOptimizeDAE: time 0.002345/3.602, allocations: 1.936 MB / 1.714 GB, free: 0.9531 MB / 1.042 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0002914/3.603, allocations: 60 kB / 1.714 GB, free: 0.8945 MB / 1.042 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.02946/3.632, allocations: 4.654 MB / 1.719 GB, free: 12.79 MB / 1.057 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.02134/3.654, allocations: 2.033 MB / 1.721 GB, free: 10.9 MB / 1.057 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.02196/3.676, allocations: 10.9 MB / 1.732 GB, free: 1.98 MB / 1.057 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.02395/3.7, allocations: 1.22 MB / 1.733 GB, free: 0.8828 MB / 1.057 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.00284/3.703, allocations: 468 kB / 1.733 GB, free: 496 kB / 1.057 GB Notification: Performance of prepare postOptimizeDAE: time 1.684e-05/3.703, allocations: 4 kB / 1.733 GB, free: 492 kB / 1.057 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.06703/3.77, allocations: 16.1 MB / 1.749 GB, free: 5.012 MB / 1.073 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0002027/3.77, allocations: 60 kB / 1.749 GB, free: 4.953 MB / 1.073 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.02354/3.793, allocations: 4.385 MB / 1.753 GB, free: 1.117 MB / 1.073 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.01919/3.813, allocations: 2.027 MB / 1.755 GB, free: 15.23 MB / 1.089 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.04364/3.856, allocations: 15.06 MB / 1.77 GB, free: 1.379 MB / 1.089 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.02354/3.88, allocations: 1.201 MB / 1.771 GB, free: 180 kB / 1.089 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.002937/3.883, allocations: 443.8 kB / 1.771 GB, free: 15.74 MB / 1.104 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 269 * Number of states: 0 () * Number of discrete variables: 10 ($whenCondition1,$whenCondition2,stepPump.y,$PRE.stepPump.pulseStart,stepPump.pulseStart,pumpHea.stage,$PRE.stepValve.T_start,stepValve.T_start,$PRE.stepValve.count,stepValve.count) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (748): * Single equations (assignments): 735 * Array equations: 4 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 6 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 6 {1,1,1,1,1,1} * Without analytic Jacobian: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 2 {5 80,7 78} Notification: Performance of prepare postOptimizeDAE: time 0.01335/3.896, allocations: 3.112 MB / 1.775 GB, free: 12.71 MB / 1.104 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.005015/3.901, allocations: 1.195 MB / 1.776 GB, free: 11.5 MB / 1.104 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0723/3.974, allocations: 14.99 MB / 1.79 GB, free: 12.57 MB / 1.12 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 0.000127/3.974, allocations: 65.86 kB / 1.79 GB, free: 12.5 MB / 1.12 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.196e-05/3.974, allocations: 0 / 1.79 GB, free: 12.5 MB / 1.12 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.05467/4.029, allocations: 12.29 MB / 1.802 GB, free: 224 kB / 1.12 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 postOpt removeSimpleEquations (simulation): time 0.1039/4.133, allocations: 26.55 MB / 1.828 GB, free: 5.664 MB / 1.151 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 9.584e-05/4.133, allocations: 4 kB / 1.828 GB, free: 5.66 MB / 1.151 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.01338/4.146, allocations: 1.243 MB / 1.83 GB, free: 4.457 MB / 1.151 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.01919/4.165, allocations: 3.271 MB / 1.833 GB, free: 1.195 MB / 1.151 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.001574/4.167, allocations: 167.9 kB / 1.833 GB, free: 1.031 MB / 1.151 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.01715/4.184, allocations: 9.583 MB / 1.842 GB, free: 7.27 MB / 1.167 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.304e-05/4.184, allocations: 10.72 kB / 1.842 GB, free: 7.262 MB / 1.167 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.7449/4.929, allocations: 20.22 MB / 1.862 GB, free: 0.5106 GB / 1.167 GB Notification: Performance of postOpt removeConstants (simulation): time 0.01064/4.94, allocations: 2.365 MB / 1.864 GB, free: 0.5101 GB / 1.167 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.005457/4.945, allocations: 110.8 kB / 1.864 GB, free: 0.51 GB / 1.167 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.02032/4.966, allocations: 1.041 MB / 1.865 GB, free: 0.5099 GB / 1.167 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.002037/4.968, allocations: 388.9 kB / 1.866 GB, free: 0.5099 GB / 1.167 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.00153/4.969, allocations: 244.1 kB / 1.866 GB, free: 0.5098 GB / 1.167 GB Notification: Performance of sorting global known variables: time 0.02949/4.999, allocations: 10.59 MB / 1.876 GB, free: 0.5063 GB / 1.167 GB Notification: Performance of sort global known variables: time 1.112e-06/4.999, allocations: 0 / 1.876 GB, free: 0.5063 GB / 1.167 GB Notification: Performance of remove unused functions: time 0.04632/5.045, allocations: 5.438 MB / 1.882 GB, free: 0.5059 GB / 1.167 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 28 * Number of states: 3 (valSouth.vol.dynBal.U,valNorth.vol.dynBal.U,heater.outCon.T) * Number of discrete variables: 7 ($whenCondition2,$whenCondition1,stepPump.y,stepPump.pulseStart,pumpHea.stage,stepValve.T_start,stepValve.count) * Number of discrete states: 1 (stepValve.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (441): * Single equations (assignments): 420 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 10 * When equations: 3 * If-equations: 0 * Equation systems (linear and non-linear blocks): 5 * Torn equation systems: 3 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 5 {1,1,1,1,1} * Without analytic Jacobian: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 3 {9 78,1 1,8 77} Notification: Performance of Backend phase and start with SimCode phase: time 0.07282/5.118, allocations: 21.1 MB / 1.902 GB, free: 0.4989 GB / 1.167 GB Notification: Performance of simCode: created initialization part: time 0.07449/5.193, allocations: 19.95 MB / 1.922 GB, free: 0.493 GB / 1.167 GB Notification: Performance of simCode: created event and clocks part: time 1.593e-05/5.193, allocations: 3.969 kB / 1.922 GB, free: 0.493 GB / 1.167 GB Notification: Performance of simCode: created simulation system equations: time 0.02234/5.215, allocations: 5.698 MB / 1.927 GB, free: 0.4911 GB / 1.167 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.05533/5.27, allocations: 6.064 MB / 1.933 GB, free: 498.7 MB / 1.167 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.4281/5.698, allocations: 154.3 MB / 2.084 GB, free: 340.8 MB / 1.167 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.01294/5.711, allocations: 6.822 MB / 2.091 GB, free: 334 MB / 1.167 GB Notification: Performance of simCode: alias equations: time 0.0283/5.74, allocations: 3.869 MB / 2.094 GB, free: 330.1 MB / 1.167 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0151/5.755, allocations: 6.037 MB / 2.1 GB, free: 324.1 MB / 1.167 GB Notification: Performance of SimCode: time 1.583e-06/5.755, allocations: 0 / 2.1 GB, free: 324.1 MB / 1.167 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 2.125/7.88, allocations: 368.8 MB / 2.46 GB, free: 491.9 MB / 1.167 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0002563/7.881, allocations: 264.1 kB / 2.461 GB, free: 491.6 MB / 1.167 GB Notification: Performance of buildModelFMU: Generate platform static: time 22.63/30.51, allocations: 0.5625 kB / 2.461 GB, free: 491.6 MB / 1.167 GB (rm -f Buildings_8.0.0_Buildings.Fluid.Examples.FlowSystem.Simplified6.pipe ; mkfifo Buildings_8.0.0_Buildings.Fluid.Examples.FlowSystem.Simplified6.pipe ; head -c 1048576 < Buildings_8.0.0_Buildings.Fluid.Examples.FlowSystem.Simplified6.pipe >> ../files/Buildings_8.0.0_Buildings.Fluid.Examples.FlowSystem.Simplified6.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator --tempDir=temp_Buildings_8_0_0_Buildings_Fluid_Examples_FlowSystem_Simplified6_fmu --startTime=0 --stopTime=1000 --timeout=50 --tolerance=1e-06 Buildings_8_0_0_Buildings_Fluid_Examples_FlowSystem_Simplified6.fmu > Buildings_8.0.0_Buildings.Fluid.Examples.FlowSystem.Simplified6.pipe 2>&1)