Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume.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 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo", uses=false) Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/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) 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: "" <> buildModelFMU(IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume,fileNamePrefix="IBPSA_latest_IBPSA_Airflow_Multizone_Examples_ChimneyShaftNoVolume",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume,fileNamePrefix="IBPSA_latest_IBPSA_Airflow_Multizone_Examples_ChimneyShaftNoVolume",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0008785/0.0008785, allocations: 98.58 kB / 16.02 MB, free: 80 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001078/0.001078, allocations: 184.1 kB / 16.92 MB, free: 6.754 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.32/1.32, allocations: 223.3 MB / 241 MB, free: 5.328 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo): time 0.6796/0.6796, allocations: 115.5 MB / 407.6 MB, free: 2.672 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0002866/0.0002866, allocations: 16 kB / 496 MB, free: 6.234 MB / 350.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.142/0.1423, allocations: 77.52 MB / 0.56 GB, free: 8.914 MB / 430.1 MB Notification: Performance of NFInst.instantiate(IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume): time 0.3973/0.5397, allocations: 163 MB / 0.7192 GB, free: 3.09 MB / 0.5294 GB Notification: Performance of NFInst.instExpressions: time 0.01125/0.551, allocations: 8.84 MB / 0.7278 GB, free: 10.23 MB / 0.545 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001115/0.5521, allocations: 35.81 kB / 0.7279 GB, free: 10.19 MB / 0.545 GB Notification: Performance of NFTyping.typeComponents: time 0.001335/0.5535, allocations: 0.548 MB / 0.7284 GB, free: 9.641 MB / 0.545 GB Notification: Performance of NFTyping.typeBindings: time 0.003184/0.5567, allocations: 1.396 MB / 0.7297 GB, free: 8.238 MB / 0.545 GB Notification: Performance of NFTyping.typeClassSections: time 0.002461/0.5591, allocations: 1.069 MB / 0.7308 GB, free: 7.18 MB / 0.545 GB Notification: Performance of NFFlatten.flatten: time 0.003544/0.5627, allocations: 3.644 MB / 0.7344 GB, free: 3.523 MB / 0.545 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001026/0.5637, allocations: 0.8163 MB / 0.7351 GB, free: 2.688 MB / 0.545 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001237/0.565, allocations: 0.8711 MB / 0.736 GB, free: 1.812 MB / 0.545 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001073/0.5661, allocations: 0.9764 MB / 0.737 GB, free: 0.832 MB / 0.545 GB Notification: Performance of NFPackage.collectConstants: time 8.898e-05/0.5662, allocations: 40 kB / 0.737 GB, free: 0.793 MB / 0.545 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001895/0.5681, allocations: 1.006 MB / 0.738 GB, free: 15.78 MB / 0.5606 GB Notification: Performance of NFScalarize.scalarize: time 0.0002038/0.5683, allocations: 222.9 kB / 0.7382 GB, free: 15.57 MB / 0.5606 GB Notification: Performance of NFVerifyModel.verify: time 0.0004796/0.5688, allocations: 0.5688 MB / 0.7387 GB, free: 14.99 MB / 0.5606 GB Notification: Performance of NFConvertDAE.convert: time 0.001606/0.5704, allocations: 1.659 MB / 0.7404 GB, free: 13.32 MB / 0.5606 GB Notification: Performance of FrontEnd - DAE generated: time 2.976e-06/0.5704, allocations: 3.938 kB / 0.7404 GB, free: 13.32 MB / 0.5606 GB Notification: Performance of FrontEnd: time 1.643e-06/0.5704, allocations: 0 / 0.7404 GB, free: 13.32 MB / 0.5606 GB Notification: Performance of Transformations before backend: time 1.011e-05/0.5704, allocations: 0 / 0.7404 GB, free: 13.32 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: 195 * Number of variables: 195 Notification: Performance of Generate backend data structure: time 0.002123/0.5726, allocations: 1.359 MB / 0.7417 GB, free: 11.91 MB / 0.5606 GB Notification: Performance of prepare preOptimizeDAE: time 3.535e-05/0.5726, allocations: 8.031 kB / 0.7417 GB, free: 11.9 MB / 0.5606 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001404/0.5727, allocations: 134.9 kB / 0.7418 GB, free: 11.76 MB / 0.5606 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0002292/0.573, allocations: 135.3 kB / 0.742 GB, free: 11.63 MB / 0.5606 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001161/0.5741, allocations: 0.8569 MB / 0.7428 GB, free: 10.73 MB / 0.5606 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.355e-05/0.5742, allocations: 61.94 kB / 0.7429 GB, free: 10.67 MB / 0.5606 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001033/0.5743, allocations: 76 kB / 0.7429 GB, free: 10.59 MB / 0.5606 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001298/0.5756, allocations: 0.881 MB / 0.7438 GB, free: 9.668 MB / 0.5606 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.111e-05/0.5757, allocations: 4 kB / 0.7438 GB, free: 9.664 MB / 0.5606 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.652e-05/0.5757, allocations: 32 kB / 0.7438 GB, free: 9.633 MB / 0.5606 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.514e-05/0.5758, allocations: 20 kB / 0.7438 GB, free: 9.613 MB / 0.5606 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001074/0.5768, allocations: 0.644 MB / 0.7445 GB, free: 8.969 MB / 0.5606 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 0.004044/0.5809, allocations: 3.954 MB / 0.7483 GB, free: 4.762 MB / 0.5606 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001067/0.582, allocations: 0.5836 MB / 0.7489 GB, free: 4.168 MB / 0.5606 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0004593/0.5824, allocations: 299.9 kB / 0.7492 GB, free: 3.875 MB / 0.5606 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0008944/0.5833, allocations: 1.243 MB / 0.7504 GB, free: 2.355 MB / 0.5606 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0005551/0.5839, allocations: 339 kB / 0.7507 GB, free: 2.016 MB / 0.5606 GB Notification: Performance of pre-optimization done (n=63): time 2.134e-06/0.5839, allocations: 0 / 0.7507 GB, free: 2.016 MB / 0.5606 GB Notification: Performance of matching and sorting (n=63): time 0.002251/0.5862, allocations: 1.158 MB / 0.7519 GB, free: 0.8125 MB / 0.5606 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.703e-05/0.5862, allocations: 89.66 kB / 0.7519 GB, free: 0.707 MB / 0.5606 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0009426/0.5872, allocations: 0.8611 MB / 0.7528 GB, free: 15.82 MB / 0.5762 GB Notification: Performance of collectPreVariables (initialization): time 4.91e-05/0.5872, allocations: 41.7 kB / 0.7528 GB, free: 15.77 MB / 0.5762 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003231/0.5876, allocations: 460.2 kB / 0.7533 GB, free: 15.32 MB / 0.5762 GB Notification: Performance of collectInitialBindings (initialization): time 0.000162/0.5877, allocations: 224.8 kB / 0.7535 GB, free: 15.1 MB / 0.5762 GB Notification: Performance of simplifyInitialFunctions (initialization): time 7.069e-05/0.5878, allocations: 53.69 kB / 0.7535 GB, free: 15.04 MB / 0.5762 GB Notification: Performance of setup shared object (initialization): time 0.0001039/0.5879, allocations: 330 kB / 0.7538 GB, free: 14.71 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003876/0.5883, allocations: 213.2 kB / 0.754 GB, free: 14.5 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004532/0.5888, allocations: 320.4 kB / 0.7543 GB, free: 14.15 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0008441/0.5896, allocations: 0.5347 MB / 0.7549 GB, free: 13.59 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.775e-06/0.5897, allocations: 0 / 0.7549 GB, free: 13.59 MB / 0.5762 GB Notification: Performance of matching and sorting (n=75) (initialization): time 0.001186/0.5908, allocations: 0.7288 MB / 0.7556 GB, free: 12.85 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 7.903e-05/0.5909, allocations: 151.3 kB / 0.7557 GB, free: 12.67 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.652e-06/0.591, allocations: 4 kB / 0.7557 GB, free: 12.66 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005122/0.5915, allocations: 112.7 kB / 0.7558 GB, free: 12.55 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004138/0.5919, allocations: 115.8 kB / 0.7559 GB, free: 12.44 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0005229/0.5924, allocations: 0.6655 MB / 0.7566 GB, free: 11.75 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005583/0.593, allocations: 95.39 kB / 0.7567 GB, free: 11.65 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.171e-05/0.5931, allocations: 27.98 kB / 0.7567 GB, free: 11.62 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 4.609e-06/0.5931, allocations: 0 / 0.7567 GB, free: 11.62 MB / 0.5762 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.0009391/0.594, allocations: 0.58 MB / 0.7573 GB, free: 11.04 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.216e-06/0.594, allocations: 4.281 kB / 0.7573 GB, free: 11.04 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0003959/0.5944, allocations: 104.8 kB / 0.7574 GB, free: 10.93 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003843/0.5948, allocations: 111.8 kB / 0.7575 GB, free: 10.82 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0004773/0.5953, allocations: 0.6538 MB / 0.7581 GB, free: 10.14 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004809/0.5958, allocations: 91.31 kB / 0.7582 GB, free: 10.05 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.229e-05/0.5959, allocations: 31.98 kB / 0.7582 GB, free: 10.02 MB / 0.5762 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 10 * Number of states: 0 () * Number of discrete variables: 5 ($PRE.mRoo_flow.nextTimeEvent,$whenCondition1,mRoo_flow.nextTimeEventScaled,$PRE.mRoo_flow.nextTimeEventScaled,mRoo_flow.nextTimeEvent) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (67): * Single equations (assignments): 66 * 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 {(2,7)} Notification: Performance of prepare postOptimizeDAE: time 0.0003483/0.5962, allocations: 328.9 kB / 0.7586 GB, free: 9.691 MB / 0.5762 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001188/0.5963, allocations: 102.8 kB / 0.7587 GB, free: 9.59 MB / 0.5762 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001644/0.598, allocations: 0.9486 MB / 0.7596 GB, free: 8.629 MB / 0.5762 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.311e-05/0.598, allocations: 19.88 kB / 0.7596 GB, free: 8.609 MB / 0.5762 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.84e-06/0.598, allocations: 0 / 0.7596 GB, free: 8.609 MB / 0.5762 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001209/0.5992, allocations: 0.8582 MB / 0.7604 GB, free: 7.695 MB / 0.5762 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002508/0.6018, allocations: 1.861 MB / 0.7623 GB, free: 5.766 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.689e-06/0.6018, allocations: 0 / 0.7623 GB, free: 5.766 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004056/0.6022, allocations: 103.9 kB / 0.7624 GB, free: 5.664 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0005562/0.6028, allocations: 157.7 kB / 0.7625 GB, free: 5.504 MB / 0.5762 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.874e-05/0.6028, allocations: 16 kB / 0.7625 GB, free: 5.488 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0008324/0.6036, allocations: 1.264 MB / 0.7638 GB, free: 4.18 MB / 0.5762 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.814e-06/0.6037, allocations: 0 / 0.7638 GB, free: 4.18 MB / 0.5762 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001911/0.6056, allocations: 1.292 MB / 0.765 GB, free: 2.863 MB / 0.5762 GB Notification: Performance of postOpt removeConstants (simulation): time 0.000313/0.6059, allocations: 271.6 kB / 0.7653 GB, free: 2.578 MB / 0.5762 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001007/0.606, allocations: 16 kB / 0.7653 GB, free: 2.562 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0005073/0.6065, allocations: 59.98 kB / 0.7654 GB, free: 2.504 MB / 0.5762 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001104/0.6066, allocations: 52.53 kB / 0.7654 GB, free: 2.453 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.433e-05/0.6067, allocations: 27.98 kB / 0.7654 GB, free: 2.426 MB / 0.5762 GB Notification: Performance of sorting global known variables: time 0.0006787/0.6074, allocations: 0.6052 MB / 0.766 GB, free: 1.809 MB / 0.5762 GB Notification: Performance of sort global known variables: time 2.7e-07/0.6074, allocations: 3.938 kB / 0.766 GB, free: 1.805 MB / 0.5762 GB Notification: Performance of remove unused functions: time 0.001226/0.6086, allocations: 0.5573 MB / 0.7666 GB, free: 1.246 MB / 0.5762 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 5 (roo.dynBal.U,roo.dynBal.m,oriChiTop.mExc,oriBot.mExc,oriChiBot.mExc) * Number of discrete variables: 3 ($whenCondition1,mRoo_flow.nextTimeEvent,mRoo_flow.nextTimeEventScaled) * Number of discrete states: 2 (mRoo_flow.nextTimeEvent,mRoo_flow.nextTimeEventScaled) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (62): * Single equations (assignments): 54 * 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 {(2,9), (1,2)} Notification: Performance of Backend phase and start with SimCode phase: time 0.003519/0.6122, allocations: 2.442 MB / 0.769 GB, free: 14.93 MB / 0.5919 GB Notification: Performance of simCode: created initialization part: time 0.001723/0.6139, allocations: 0.9337 MB / 0.7699 GB, free: 14 MB / 0.5919 GB Notification: Performance of simCode: created event and clocks part: time 3.036e-06/0.6139, allocations: 0 / 0.7699 GB, free: 14 MB / 0.5919 GB Notification: Performance of simCode: created simulation system equations: time 0.0006946/0.6146, allocations: 392.5 kB / 0.7702 GB, free: 13.62 MB / 0.5919 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002048/0.6167, allocations: 428.5 kB / 0.7706 GB, free: 13.2 MB / 0.5919 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0103/0.627, allocations: 8.107 MB / 0.7786 GB, free: 4.785 MB / 0.5919 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005741/0.6276, allocations: 1.065 MB / 0.7796 GB, free: 3.691 MB / 0.5919 GB Notification: Performance of simCode: alias equations: time 0.0007873/0.6284, allocations: 223 kB / 0.7798 GB, free: 3.469 MB / 0.5919 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004618/0.6288, allocations: 407.3 kB / 0.7802 GB, free: 3.07 MB / 0.5919 GB Notification: Performance of SimCode: time 6.61e-07/0.6288, allocations: 0 / 0.7802 GB, free: 3.07 MB / 0.5919 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.08083/0.7097, allocations: 28.35 MB / 0.8079 GB, free: 7.137 MB / 0.6231 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0002624/0.71, allocations: 287.9 kB / 0.8082 GB, free: 6.746 MB / 0.6231 GB Notification: Performance of buildModelFMU: Generate platform static: time 2.394/3.105, allocations: 0 / 0.8082 GB, free: 6.746 MB / 0.6231 GB (rm -f IBPSA_latest_IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume.pipe ; mkfifo IBPSA_latest_IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume.pipe >> ../files/IBPSA_latest_IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_IBPSA_latest_IBPSA_Airflow_Multizone_Examples_ChimneyShaftNoVolume_fmu --startTime=0 --stopTime=3600 --timeout=50 --tolerance=1e-06 IBPSA_latest_IBPSA_Airflow_Multizone_Examples_ChimneyShaftNoVolume.fmu > IBPSA_latest_IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume.pipe 2>&1)