Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_8_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 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.Fluid.Examples.Performance.Example1v1,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.Examples.Performance.Example1v1") translateModel(Buildings.Fluid.Examples.Performance.Example1v1,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_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 0.001413/0.001412, allocations: 108 kB / 15.6 MB, free: 132 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001698/0.001698, allocations: 191.9 kB / 16.53 MB, free: 6.391 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.503/1.503, allocations: 205.1 MB / 222.4 MB, free: 4.59 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo): time 1.701/1.701, allocations: 292.3 MB / 0.5489 GB, free: 12.84 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 0.001986/0.001986, allocations: 70.92 kB / 0.6715 GB, free: 26.24 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2392/0.2412, allocations: 114.5 MB / 0.7834 GB, free: 13.48 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Examples.Performance.Example1v1): time 0.06671/0.3079, allocations: 72.62 MB / 0.8543 GB, free: 4.602 MB / 0.67 GB Notification: Performance of NFInst.instExpressions: time 0.03059/0.3386, allocations: 20.06 MB / 0.8739 GB, free: 0.4961 MB / 0.6856 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.004139/0.3427, allocations: 95.38 kB / 0.874 GB, free: 412 kB / 0.6856 GB Notification: Performance of NFTyping.typeComponents: time 0.003449/0.3463, allocations: 1.013 MB / 0.8749 GB, free: 15.38 MB / 0.7013 GB Notification: Performance of NFTyping.typeBindings: time 0.008034/0.3543, allocations: 2.334 MB / 0.8772 GB, free: 13.04 MB / 0.7013 GB Notification: Performance of NFTyping.typeClassSections: time 0.007102/0.3614, allocations: 2.061 MB / 0.8792 GB, free: 10.99 MB / 0.7013 GB Notification: Performance of NFFlatten.flatten: time 0.01015/0.3716, allocations: 7.982 MB / 0.887 GB, free: 2.984 MB / 0.7013 GB Notification: Performance of NFFlatten.resolveConnections: time 0.008133/0.3798, allocations: 6.113 MB / 0.893 GB, free: 12.8 MB / 0.7169 GB Notification: Performance of NFEvalConstants.evaluate: time 0.007149/0.387, allocations: 3.245 MB / 0.8962 GB, free: 9.551 MB / 0.7169 GB Notification: Performance of NFSimplifyModel.simplify: time 0.004666/0.3917, allocations: 2.485 MB / 0.8986 GB, free: 7.055 MB / 0.7169 GB Notification: Performance of NFPackage.collectConstants: time 0.00127/0.3929, allocations: 256 kB / 0.8988 GB, free: 6.805 MB / 0.7169 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004813/0.3978, allocations: 1.361 MB / 0.9002 GB, free: 5.441 MB / 0.7169 GB Notification: Performance of NFScalarize.scalarize: time 0.001743/0.3995, allocations: 0.7704 MB / 0.9009 GB, free: 4.668 MB / 0.7169 GB Notification: Performance of NFVerifyModel.verify: time 0.004269/0.4038, allocations: 1.765 MB / 0.9026 GB, free: 2.895 MB / 0.7169 GB Notification: Performance of NFConvertDAE.convert: time 0.4673/0.8711, allocations: 4.673 MB / 0.9072 GB, free: 35.03 MB / 0.7169 GB Notification: Performance of FrontEnd - DAE generated: time 8.005e-06/0.8712, allocations: 0.7188 kB / 0.9072 GB, free: 35.03 MB / 0.7169 GB Notification: Performance of FrontEnd: time 2.805e-06/0.8712, allocations: 0 / 0.9072 GB, free: 35.03 MB / 0.7169 GB Notification: Performance of Transformations before backend: time 0.0001741/0.8714, allocations: 0.75 kB / 0.9072 GB, free: 35.03 MB / 0.7169 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 0.009968/0.8814, allocations: 3.926 MB / 0.911 GB, free: 33.39 MB / 0.7169 GB Notification: Performance of prepare preOptimizeDAE: time 5.008e-05/0.8814, allocations: 10.03 kB / 0.9111 GB, free: 33.39 MB / 0.7169 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002849/0.8843, allocations: 0.5502 MB / 0.9116 GB, free: 33.2 MB / 0.7169 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.006261/0.8906, allocations: 2.597 MB / 0.9141 GB, free: 32.5 MB / 0.7169 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001239/0.8907, allocations: 143.9 kB / 0.9143 GB, free: 32.5 MB / 0.7169 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0003067/0.891, allocations: 181.4 kB / 0.9144 GB, free: 32.5 MB / 0.7169 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.003989/0.895, allocations: 2.327 MB / 0.9167 GB, free: 32.07 MB / 0.7169 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.736e-05/0.8951, allocations: 6.219 kB / 0.9167 GB, free: 32.07 MB / 0.7169 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001687/0.8952, allocations: 69.89 kB / 0.9168 GB, free: 32.07 MB / 0.7169 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.901e-05/0.8953, allocations: 46.16 kB / 0.9168 GB, free: 32.06 MB / 0.7169 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003447/0.8987, allocations: 1.859 MB / 0.9186 GB, free: 32.04 MB / 0.7169 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 0.01346/0.9122, allocations: 11.13 MB / 0.9295 GB, free: 26.25 MB / 0.7169 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002723/0.915, allocations: 1.338 MB / 0.9308 GB, free: 26.19 MB / 0.7169 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.00165/0.9166, allocations: 1.004 MB / 0.9318 GB, free: 26.18 MB / 0.7169 GB Notification: Performance of preOpt evalFunc (simulation): time 0.006388/0.923, allocations: 3.642 MB / 0.9354 GB, free: 24.49 MB / 0.7169 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.00144/0.9245, allocations: 0.7665 MB / 0.9361 GB, free: 24.43 MB / 0.7169 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.001467/0.926, allocations: 237.4 kB / 0.9363 GB, free: 24.38 MB / 0.7169 GB Notification: Performance of pre-optimization done (n=95): time 4.048e-06/0.926, allocations: 0 / 0.9363 GB, free: 24.38 MB / 0.7169 GB Notification: Performance of matching and sorting (n=95): time 0.01144/0.9374, allocations: 4.166 MB / 0.9404 GB, free: 23.79 MB / 0.7169 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.413e-05/0.9375, allocations: 67.27 kB / 0.9405 GB, free: 23.73 MB / 0.7169 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003893/0.9414, allocations: 2.862 MB / 0.9433 GB, free: 23.47 MB / 0.7169 GB Notification: Performance of collectPreVariables (initialization): time 0.0001925/0.9416, allocations: 54.39 kB / 0.9433 GB, free: 23.44 MB / 0.7169 GB Notification: Performance of collectInitialEqns (initialization): time 0.001067/0.9427, allocations: 1.428 MB / 0.9447 GB, free: 23.04 MB / 0.7169 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002893/0.943, allocations: 338.8 kB / 0.945 GB, free: 22.83 MB / 0.7169 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004982/0.9435, allocations: 352.1 kB / 0.9454 GB, free: 22.8 MB / 0.7169 GB Notification: Performance of setup shared object (initialization): time 4.015e-05/0.9435, allocations: 302.3 kB / 0.9457 GB, free: 22.5 MB / 0.7169 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001289/0.9448, allocations: 0.6818 MB / 0.9463 GB, free: 22.48 MB / 0.7169 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001638/0.9465, allocations: 1.43 MB / 0.9477 GB, free: 21.54 MB / 0.7169 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.002835/0.9493, allocations: 1.92 MB / 0.9496 GB, free: 20.93 MB / 0.7169 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.031e-05/0.9493, allocations: 4.656 kB / 0.9496 GB, free: 20.93 MB / 0.7169 GB Notification: Performance of matching and sorting (n=183) (initialization): time 0.005965/0.9553, allocations: 2.848 MB / 0.9524 GB, free: 20.58 MB / 0.7169 GB Notification: Performance of prepare postOptimizeDAE: time 4.967e-05/0.9554, allocations: 37.86 kB / 0.9524 GB, free: 20.55 MB / 0.7169 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.281e-05/0.9554, allocations: 13.66 kB / 0.9524 GB, free: 20.55 MB / 0.7169 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.002233/0.9576, allocations: 0.6939 MB / 0.9531 GB, free: 20.49 MB / 0.7169 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001131/0.9588, allocations: 297 kB / 0.9534 GB, free: 20.49 MB / 0.7169 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001659/0.9605, allocations: 1.907 MB / 0.9552 GB, free: 19.43 MB / 0.7169 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00254/0.963, allocations: 98.39 kB / 0.9553 GB, free: 19.41 MB / 0.7169 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001666/0.9632, allocations: 88 kB / 0.9554 GB, free: 19.41 MB / 0.7169 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.002171/0.9654, allocations: 1.271 MB / 0.9567 GB, free: 19.32 MB / 0.7169 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001449/0.9668, allocations: 1.387 MB / 0.958 GB, free: 18.37 MB / 0.7169 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.002312/0.9691, allocations: 1.819 MB / 0.9598 GB, free: 17.75 MB / 0.7169 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 8.345e-06/0.9692, allocations: 6.844 kB / 0.9598 GB, free: 17.75 MB / 0.7169 GB Notification: Performance of matching and sorting (n=183) (initialization_lambda0): time 0.004691/0.9739, allocations: 2.693 MB / 0.9624 GB, free: 17.32 MB / 0.7169 GB Notification: Performance of prepare postOptimizeDAE: time 3.518e-05/0.9739, allocations: 39.38 kB / 0.9625 GB, free: 17.29 MB / 0.7169 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.78e-05/0.9739, allocations: 16.56 kB / 0.9625 GB, free: 17.29 MB / 0.7169 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0008242/0.9748, allocations: 468.7 kB / 0.9629 GB, free: 17.27 MB / 0.7169 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001054/0.9758, allocations: 283.6 kB / 0.9632 GB, free: 17.26 MB / 0.7169 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.005794/0.9816, allocations: 6.342 MB / 0.9694 GB, free: 13.33 MB / 0.7169 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002149/0.9838, allocations: 117.6 kB / 0.9695 GB, free: 13.27 MB / 0.7169 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001278/0.9839, allocations: 79.16 kB / 0.9696 GB, free: 13.25 MB / 0.7169 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 0.0004683/0.9844, allocations: 283.1 kB / 0.9699 GB, free: 13.02 MB / 0.7169 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003958/0.9848, allocations: 295 kB / 0.9701 GB, free: 12.86 MB / 0.7169 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004217/0.989, allocations: 2.44 MB / 0.9725 GB, free: 11.54 MB / 0.7169 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.49e-05/0.9891, allocations: 11.41 kB / 0.9725 GB, free: 11.54 MB / 0.7169 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.236e-06/0.9891, allocations: 4 kB / 0.9725 GB, free: 11.53 MB / 0.7169 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.00294/0.992, allocations: 2.06 MB / 0.9745 GB, free: 10.3 MB / 0.7169 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.006547/0.9986, allocations: 4.377 MB / 0.9788 GB, free: 7.641 MB / 0.7169 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.513e-06/0.9986, allocations: 0 / 0.9788 GB, free: 7.641 MB / 0.7169 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0008026/0.9994, allocations: 166.6 kB / 0.979 GB, free: 7.598 MB / 0.7169 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0009274/1, allocations: 476.1 kB / 0.9794 GB, free: 7.383 MB / 0.7169 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.34e-05/1, allocations: 37.56 kB / 0.9795 GB, free: 7.359 MB / 0.7169 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001206/1.002, allocations: 1.851 MB / 0.9813 GB, free: 5.902 MB / 0.7169 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.863e-06/1.002, allocations: 1.422 kB / 0.9813 GB, free: 5.902 MB / 0.7169 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.004809/1.006, allocations: 3.125 MB / 0.9843 GB, free: 4.188 MB / 0.7169 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001077/1.008, allocations: 479 kB / 0.9848 GB, free: 3.816 MB / 0.7169 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0003479/1.008, allocations: 25.36 kB / 0.9848 GB, free: 3.797 MB / 0.7169 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001073/1.009, allocations: 68.58 kB / 0.9849 GB, free: 3.758 MB / 0.7169 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001599/1.009, allocations: 82.98 kB / 0.985 GB, free: 3.719 MB / 0.7169 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001033/1.009, allocations: 46.88 kB / 0.985 GB, free: 3.699 MB / 0.7169 GB Notification: Performance of sorting global known variables: time 0.002232/1.012, allocations: 1.956 MB / 0.9869 GB, free: 2.688 MB / 0.7169 GB Notification: Performance of sort global known variables: time 1.4e-07/1.012, allocations: 0 / 0.9869 GB, free: 2.688 MB / 0.7169 GB Notification: Performance of remove unused functions: time 0.003282/1.015, allocations: 1.341 MB / 0.9882 GB, free: 1.656 MB / 0.7169 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 0.0008872/1.016, allocations: 462.6 kB / 0.9887 GB, free: 1.246 MB / 0.7169 GB Notification: Performance of simCode: created initialization part: time 0.006174/1.022, allocations: 3.432 MB / 0.992 GB, free: 13.87 MB / 0.7325 GB Notification: Performance of simCode: created event and clocks part: time 3.797e-06/1.022, allocations: 4.438 kB / 0.992 GB, free: 13.87 MB / 0.7325 GB Notification: Performance of simCode: created simulation system equations: time 0.001469/1.023, allocations: 0.7821 MB / 0.9928 GB, free: 13.09 MB / 0.7325 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.005598/1.029, allocations: 1.276 MB / 0.994 GB, free: 11.86 MB / 0.7325 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.008559/1.038, allocations: 5.195 MB / 0.9991 GB, free: 6.66 MB / 0.7325 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001561/1.039, allocations: 2.067 MB / 1.001 GB, free: 4.566 MB / 0.7325 GB Notification: Performance of simCode: alias equations: time 0.002854/1.042, allocations: 0.6767 MB / 1.002 GB, free: 3.891 MB / 0.7325 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0005004/1.043, allocations: 207.4 kB / 1.002 GB, free: 3.688 MB / 0.7325 GB Notification: Performance of SimCode: time 8.22e-07/1.043, allocations: 0 / 1.002 GB, free: 3.688 MB / 0.7325 GB Notification: Performance of Templates: time 0.08976/1.132, allocations: 54.77 MB / 1.055 GB, free: 13.96 MB / 0.795 GB make -j1 -f Buildings_8_Buildings.Fluid.Examples.Performance.Example1v1.makefile (rm -f Buildings_8_Buildings.Fluid.Examples.Performance.Example1v1.pipe ; mkfifo Buildings_8_Buildings.Fluid.Examples.Performance.Example1v1.pipe ; head -c 1048576 < Buildings_8_Buildings.Fluid.Examples.Performance.Example1v1.pipe >> ../files/Buildings_8_Buildings.Fluid.Examples.Performance.Example1v1.sim & ./Buildings_8_Buildings.Fluid.Examples.Performance.Example1v1 -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8_Buildings.Fluid.Examples.Performance.Example1v1.pipe 2>&1)