Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.ThermalZones.ReducedOrder.Examples.SimpleRoomFourElements.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/Buildings 12.0.0-master/package.mo", uses=false) Using package Buildings with version 12.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.0.0-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(Buildings.ThermalZones.ReducedOrder.Examples.SimpleRoomFourElements,fileNamePrefix="Buildings_latest_Buildings_ThermalZones_ReducedOrder_Examples_SimpleRoomFourElements",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.ThermalZones.ReducedOrder.Examples.SimpleRoomFourElements,fileNamePrefix="Buildings_latest_Buildings_ThermalZones_ReducedOrder_Examples_SimpleRoomFourElements",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 0.006722/0.006722, allocations: 96.56 kB / 15.73 MB, free: 6.043 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001739/0.001739, allocations: 195.8 kB / 16.68 MB, free: 5.969 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.415/1.415, allocations: 222.9 MB / 240.4 MB, free: 4.301 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.0.0-master/package.mo): time 2.858/2.858, allocations: 482.6 MB / 0.755 GB, free: 10.6 MB / 0.6075 GB Notification: Performance of FrontEnd - loaded program: time 0.002003/0.002003, allocations: 67.84 kB / 1.083 GB, free: 12.24 MB / 0.8419 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2907/0.2927, allocations: 162.3 MB / 1.242 GB, free: 9.836 MB / 0.9981 GB Notification: Performance of NFInst.instantiate(Buildings.ThermalZones.ReducedOrder.Examples.SimpleRoomFourElements): time 0.7102/1.003, allocations: 165.1 MB / 1.403 GB, free: 10.15 MB / 1.107 GB Notification: Performance of NFInst.instExpressions: time 0.0368/1.04, allocations: 27.81 MB / 1.43 GB, free: 3.332 MB / 1.123 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.00275/1.043, allocations: 87.44 kB / 1.43 GB, free: 3.305 MB / 1.123 GB Notification: Performance of NFTyping.typeComponents: time 0.002291/1.045, allocations: 1.195 MB / 1.431 GB, free: 2.422 MB / 1.123 GB Notification: Performance of NFTyping.typeBindings: time 0.004899/1.05, allocations: 2.077 MB / 1.433 GB, free: 0.8086 MB / 1.123 GB Notification: Performance of NFTyping.typeClassSections: time 0.004464/1.054, allocations: 2.061 MB / 1.435 GB, free: 15.16 MB / 1.139 GB Notification: Performance of NFFlatten.flatten: time 0.007243/1.062, allocations: 6.601 MB / 1.442 GB, free: 10.14 MB / 1.139 GB Notification: Performance of NFFlatten.resolveConnections: time 0.006073/1.068, allocations: 4.927 MB / 1.447 GB, free: 5.148 MB / 1.139 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003645/1.071, allocations: 2.493 MB / 1.449 GB, free: 2.652 MB / 1.139 GB Notification: Performance of NFSimplifyModel.simplify: time 0.003881/1.075, allocations: 3.005 MB / 1.452 GB, free: 15.64 MB / 1.154 GB Notification: Performance of NFPackage.collectConstants: time 0.0008695/1.076, allocations: 0.5586 MB / 1.453 GB, free: 15.08 MB / 1.154 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002365/1.078, allocations: 1.175 MB / 1.454 GB, free: 13.9 MB / 1.154 GB Notification: Performance of NFScalarize.scalarize: time 0.001411/1.08, allocations: 1.429 MB / 1.455 GB, free: 12.47 MB / 1.154 GB Notification: Performance of NFVerifyModel.verify: time 0.002878/1.083, allocations: 2.59 MB / 1.458 GB, free: 9.867 MB / 1.154 GB Notification: Performance of NFConvertDAE.convert: time 0.008324/1.091, allocations: 7.263 MB / 1.465 GB, free: 2.578 MB / 1.154 GB Notification: Performance of FrontEnd - DAE generated: time 3.547e-06/1.091, allocations: 0 / 1.465 GB, free: 2.578 MB / 1.154 GB Notification: Performance of FrontEnd: time 1.353e-06/1.091, allocations: 0 / 1.465 GB, free: 2.578 MB / 1.154 GB Notification: Performance of Transformations before backend: time 7.324e-05/1.091, allocations: 0 / 1.465 GB, free: 2.578 MB / 1.154 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 989 * Number of variables: 989 Notification: Performance of Generate backend data structure: time 0.01101/1.102, allocations: 5.607 MB / 1.47 GB, free: 12.88 MB / 1.17 GB Notification: Performance of prepare preOptimizeDAE: time 3.736e-05/1.102, allocations: 11.97 kB / 1.47 GB, free: 12.87 MB / 1.17 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0007237/1.103, allocations: 0.5267 MB / 1.471 GB, free: 12.33 MB / 1.17 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01423/1.117, allocations: 2.868 MB / 1.474 GB, free: 9.457 MB / 1.17 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004561/1.122, allocations: 2.68 MB / 1.476 GB, free: 6.707 MB / 1.17 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002498/1.122, allocations: 291.7 kB / 1.477 GB, free: 6.422 MB / 1.17 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0006555/1.123, allocations: 376 kB / 1.477 GB, free: 6.055 MB / 1.17 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01249/1.135, allocations: 5.93 MB / 1.483 GB, free: 68 kB / 1.17 GB Notification: Performance of preOpt findStateOrder (simulation): time 8.022e-05/1.135, allocations: 11.89 kB / 1.483 GB, free: 56 kB / 1.17 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0004617/1.136, allocations: 156.1 kB / 1.483 GB, free: 15.9 MB / 1.186 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.935e-05/1.136, allocations: 96 kB / 1.483 GB, free: 15.8 MB / 1.186 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01675/1.153, allocations: 7.046 MB / 1.49 GB, free: 8.75 MB / 1.186 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 0.0295/1.182, allocations: 18.26 MB / 1.508 GB, free: 5.621 MB / 1.201 GB Notification: Performance of preOpt comSubExp (simulation): time 0.01075/1.193, allocations: 4.802 MB / 1.512 GB, free: 0.8164 MB / 1.201 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.006409/1.199, allocations: 3.069 MB / 1.515 GB, free: 13.75 MB / 1.217 GB Notification: Performance of preOpt evalFunc (simulation): time 0.001033/1.2, allocations: 0.6739 MB / 1.516 GB, free: 12.94 MB / 1.217 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.006531/1.207, allocations: 2.977 MB / 1.519 GB, free: 9.93 MB / 1.217 GB Notification: Performance of pre-optimization done (n=336): time 5.36e-06/1.207, allocations: 0 / 1.519 GB, free: 9.93 MB / 1.217 GB Notification: Performance of matching and sorting (n=336): time 0.02843/1.235, allocations: 10.19 MB / 1.529 GB, free: 15.61 MB / 1.232 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001525/1.236, allocations: 218.5 kB / 1.529 GB, free: 15.36 MB / 1.232 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003931/1.239, allocations: 2.805 MB / 1.532 GB, free: 12.53 MB / 1.232 GB Notification: Performance of collectPreVariables (initialization): time 0.000276/1.24, allocations: 93.69 kB / 1.532 GB, free: 12.43 MB / 1.232 GB Notification: Performance of collectInitialEqns (initialization): time 0.001598/1.241, allocations: 1.62 MB / 1.533 GB, free: 10.8 MB / 1.232 GB Notification: Performance of collectInitialBindings (initialization): time 0.00114/1.243, allocations: 1.158 MB / 1.535 GB, free: 9.629 MB / 1.232 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001153/1.244, allocations: 0.5609 MB / 1.535 GB, free: 9.059 MB / 1.232 GB Notification: Performance of setup shared object (initialization): time 0.0001289/1.244, allocations: 305.1 kB / 1.535 GB, free: 8.758 MB / 1.232 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0056/1.249, allocations: 2.293 MB / 1.538 GB, free: 6.461 MB / 1.232 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.006046/1.255, allocations: 2.672 MB / 1.54 GB, free: 3.703 MB / 1.232 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.01159/1.267, allocations: 4.895 MB / 1.545 GB, free: 14.73 MB / 1.248 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.493e-06/1.267, allocations: 4 kB / 1.545 GB, free: 14.73 MB / 1.248 GB Notification: Performance of matching and sorting (n=375) (initialization): time 0.01439/1.281, allocations: 6.059 MB / 1.551 GB, free: 8.625 MB / 1.248 GB Notification: Performance of prepare postOptimizeDAE: time 2.472e-05/1.282, allocations: 10.66 kB / 1.551 GB, free: 8.617 MB / 1.248 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.716e-05/1.282, allocations: 7.938 kB / 1.551 GB, free: 8.609 MB / 1.248 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001933/1.283, allocations: 0.8436 MB / 1.552 GB, free: 7.766 MB / 1.248 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00425/1.288, allocations: 0.8346 MB / 1.553 GB, free: 6.93 MB / 1.248 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01175/1.3, allocations: 7.589 MB / 1.56 GB, free: 15.19 MB / 1.264 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003885/1.303, allocations: 0.6069 MB / 1.561 GB, free: 14.58 MB / 1.264 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003193/1.304, allocations: 123.9 kB / 1.561 GB, free: 14.46 MB / 1.264 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 17 * Number of states: 0 () * Number of discrete variables: 32 ($PRE.intGai.nextTimeEvent,$whenCondition1,intGai.nextTimeEventScaled,$PRE.intGai.nextTimeEventScaled,intGai.nextTimeEvent,HDirTil[2].incAng.decAng.tNext,$PRE.HDirTil[2].incAng.decAng.tNext,HDirTil[1].incAng.decAng.tNext,$PRE.HDirTil[1].incAng.decAng.tNext,HDifTil[2].incAng.decAng.tNext,$PRE.HDifTil[2].incAng.decAng.tNext,HDifTil[1].incAng.decAng.tNext,$PRE.HDifTil[1].incAng.decAng.tNext,weaDat.decAng.tNext,$PRE.weaDat.decAng.tNext,weaDat.eqnTim.tNext,$PRE.weaDat.eqnTim.tNext,weaDat.conTim.tNext,$PRE.weaDat.conTim.tNext,weaDat.conTimMin.tNext,$PRE.weaDat.conTimMin.tNext,weaDat.locTim.tNext,$PRE.weaDat.locTim.tNext,$whenCondition2,$whenCondition3,$whenCondition4,$whenCondition5,$whenCondition6,$whenCondition7,$whenCondition8,$whenCondition9,$whenCondition10) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (311): * Single equations (assignments): 310 * 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): 1 system {(5,60,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.002107/1.306, allocations: 1.084 MB / 1.562 GB, free: 13.36 MB / 1.264 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000663/1.307, allocations: 345.7 kB / 1.562 GB, free: 13.02 MB / 1.264 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01629/1.323, allocations: 6.743 MB / 1.569 GB, free: 6.219 MB / 1.264 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.971e-05/1.323, allocations: 36 kB / 1.569 GB, free: 6.184 MB / 1.264 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.528e-05/1.323, allocations: 8 kB / 1.569 GB, free: 6.176 MB / 1.264 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.276e-05/1.323, allocations: 19.94 kB / 1.569 GB, free: 6.156 MB / 1.264 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.005986/1.329, allocations: 4.404 MB / 1.573 GB, free: 1.688 MB / 1.264 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 9.077e-06/1.329, allocations: 0 / 1.573 GB, free: 1.688 MB / 1.264 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.004134/1.333, allocations: 0.7878 MB / 1.574 GB, free: 0.8984 MB / 1.264 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.001912/1.335, allocations: 0.7341 MB / 1.575 GB, free: 156 kB / 1.264 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0002938/1.335, allocations: 95.86 kB / 1.575 GB, free: 60 kB / 1.264 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.01322/1.349, allocations: 10.67 MB / 1.585 GB, free: 4.945 MB / 1.279 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.206e-06/1.349, allocations: 3.984 kB / 1.585 GB, free: 4.941 MB / 1.279 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.02117/1.37, allocations: 9.607 MB / 1.594 GB, free: 11.25 MB / 1.295 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001737/1.371, allocations: 0.9665 MB / 1.595 GB, free: 10.27 MB / 1.295 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0005245/1.372, allocations: 83.83 kB / 1.595 GB, free: 10.18 MB / 1.295 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.003393/1.375, allocations: 435.4 kB / 1.596 GB, free: 9.758 MB / 1.295 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0005512/1.376, allocations: 242.4 kB / 1.596 GB, free: 9.52 MB / 1.295 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0003067/1.376, allocations: 120.2 kB / 1.596 GB, free: 9.402 MB / 1.295 GB Notification: Performance of sorting global known variables: time 0.002942/1.379, allocations: 2.033 MB / 1.598 GB, free: 7.367 MB / 1.295 GB Notification: Performance of sort global known variables: time 1.81e-07/1.379, allocations: 96 / 1.598 GB, free: 7.367 MB / 1.295 GB Notification: Performance of remove unused functions: time 0.002994/1.382, allocations: 1.329 MB / 1.6 GB, free: 6.035 MB / 1.295 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 6 (thermalZoneFourElements.volAir.dynBal.U,thermalZoneFourElements.volAir.dynBal.m,thermalZoneFourElements.extWallRC.thermCapExt[1].T,thermalZoneFourElements.intWallRC.thermCapInt[1].T,thermalZoneFourElements.floorRC.thermCapExt[1].T,thermalZoneFourElements.roofRC.thermCapExt[1].T) * Number of discrete variables: 21 ($whenCondition10,$whenCondition9,$whenCondition8,$whenCondition7,$whenCondition6,$whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,weaDat.locTim.tNext,weaDat.conTimMin.tNext,weaDat.conTim.tNext,weaDat.eqnTim.tNext,weaDat.decAng.tNext,HDifTil[1].incAng.decAng.tNext,HDifTil[2].incAng.decAng.tNext,HDirTil[1].incAng.decAng.tNext,HDirTil[2].incAng.decAng.tNext,intGai.nextTimeEvent,intGai.nextTimeEventScaled) * Number of discrete states: 11 (intGai.nextTimeEventScaled,intGai.nextTimeEvent,HDirTil[2].incAng.decAng.tNext,HDirTil[1].incAng.decAng.tNext,HDifTil[2].incAng.decAng.tNext,HDifTil[1].incAng.decAng.tNext,weaDat.decAng.tNext,weaDat.eqnTim.tNext,weaDat.conTim.tNext,weaDat.conTimMin.tNext,weaDat.locTim.tNext) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (295): * Single equations (assignments): 280 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 11 * 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 {(5,49,100.0%), (1,3,100.0%), (1,3,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,2)} Notification: Performance of Backend phase and start with SimCode phase: time 0.025/1.407, allocations: 11.14 MB / 1.61 GB, free: 11.16 MB / 1.311 GB Notification: Performance of simCode: created initialization part: time 0.01366/1.421, allocations: 5.813 MB / 1.616 GB, free: 5.309 MB / 1.311 GB Notification: Performance of simCode: created event and clocks part: time 3.807e-06/1.421, allocations: 0 / 1.616 GB, free: 5.309 MB / 1.311 GB Notification: Performance of simCode: created simulation system equations: time 0.007516/1.428, allocations: 3.49 MB / 1.62 GB, free: 1.773 MB / 1.311 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003535/1.432, allocations: 0.8315 MB / 1.62 GB, free: 0.9766 MB / 1.311 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.06702/1.499, allocations: 34.94 MB / 1.654 GB, free: 13.66 MB / 1.357 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.002879/1.502, allocations: 2.79 MB / 1.657 GB, free: 10.84 MB / 1.357 GB Notification: Performance of simCode: alias equations: time 0.003952/1.506, allocations: 1.224 MB / 1.658 GB, free: 9.617 MB / 1.357 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.002915/1.509, allocations: 1.725 MB / 1.66 GB, free: 7.891 MB / 1.357 GB Notification: Performance of SimCode: time 2.695e-06/1.509, allocations: 0 / 1.66 GB, free: 7.891 MB / 1.357 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 1.155/2.664, allocations: 87.25 MB / 1.745 GB, free: 1.289 MB / 1.436 GB Notification: Performance of buildModelFMU: Generate platform static: time 18.95/21.61, allocations: 11.8 kB / 1.745 GB, free: 1.277 MB / 1.436 GB (rm -f Buildings_latest_Buildings.ThermalZones.ReducedOrder.Examples.SimpleRoomFourElements.pipe ; mkfifo Buildings_latest_Buildings.ThermalZones.ReducedOrder.Examples.SimpleRoomFourElements.pipe ; head -c 1048576 < Buildings_latest_Buildings.ThermalZones.ReducedOrder.Examples.SimpleRoomFourElements.pipe >> ../files/Buildings_latest_Buildings.ThermalZones.ReducedOrder.Examples.SimpleRoomFourElements.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_latest_Buildings.ThermalZones.ReducedOrder.Examples.SimpleRoomFourElements_res.mat --tempDir=temp_Buildings_latest_Buildings_ThermalZones_ReducedOrder_Examples_SimpleRoomFourElements_fmu --startTime=0 --stopTime=3.1536e+07 --timeout=400 --tolerance=1e-06 Buildings_latest_Buildings_ThermalZones_ReducedOrder_Examples_SimpleRoomFourElements.fmu > Buildings_latest_Buildings.ThermalZones.ReducedOrder.Examples.SimpleRoomFourElements.pipe 2>&1)