Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_1.6_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed.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: translateModel(Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_1.6_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed") translateModel(Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_1.6_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001434/0.001434, allocations: 111.3 kB / 15.23 MB, free: 0.6406 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001677/0.001677, allocations: 194.2 kB / 16.14 MB, free: 6.695 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.429/1.429, allocations: 222.9 MB / 239.8 MB, free: 4.602 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.0.0-master/package.mo): time 2.877/2.877, allocations: 472.6 MB / 0.7447 GB, free: 4.949 MB / 0.5919 GB Notification: Performance of FrontEnd - loaded program: time 0.001194/0.001194, allocations: 71.7 kB / 0.9113 GB, free: 33.56 MB / 0.7169 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2967/0.2979, allocations: 159.9 MB / 1.068 GB, free: 10.88 MB / 0.8262 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed): time 0.06643/0.3644, allocations: 69.54 MB / 1.135 GB, free: 5.102 MB / 0.8887 GB Notification: Performance of NFInst.instExpressions: time 0.0207/0.3851, allocations: 14.7 MB / 1.15 GB, free: 6.359 MB / 0.9044 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002914/0.3881, allocations: 67.56 kB / 1.15 GB, free: 6.293 MB / 0.9044 GB Notification: Performance of NFTyping.typeComponents: time 0.002576/0.3907, allocations: 0.7615 MB / 1.151 GB, free: 5.527 MB / 0.9044 GB Notification: Performance of NFTyping.typeBindings: time 0.006363/0.3971, allocations: 2.356 MB / 1.153 GB, free: 3.168 MB / 0.9044 GB Notification: Performance of NFTyping.typeClassSections: time 0.004936/0.402, allocations: 1.785 MB / 1.155 GB, free: 1.398 MB / 0.9044 GB Notification: Performance of NFFlatten.flatten: time 0.008075/0.4101, allocations: 5.949 MB / 1.16 GB, free: 11.43 MB / 0.92 GB Notification: Performance of NFFlatten.resolveConnections: time 0.003269/0.4134, allocations: 1.344 MB / 1.162 GB, free: 10.05 MB / 0.92 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003983/0.4174, allocations: 1.493 MB / 1.163 GB, free: 8.555 MB / 0.92 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002731/0.4202, allocations: 1.26 MB / 1.164 GB, free: 7.289 MB / 0.92 GB Notification: Performance of NFPackage.collectConstants: time 0.0006667/0.4209, allocations: 92 kB / 1.165 GB, free: 7.199 MB / 0.92 GB Notification: Performance of NFFlatten.collectFunctions: time 0.00471/0.4256, allocations: 1.758 MB / 1.166 GB, free: 5.441 MB / 0.92 GB Notification: Performance of NFScalarize.scalarize: time 0.0007641/0.4264, allocations: 370.4 kB / 1.167 GB, free: 5.078 MB / 0.92 GB Notification: Performance of NFVerifyModel.verify: time 0.001787/0.4282, allocations: 0.9213 MB / 1.167 GB, free: 4.152 MB / 0.92 GB Notification: Performance of NFConvertDAE.convert: time 0.005422/0.4337, allocations: 3.44 MB / 1.171 GB, free: 0.7031 MB / 0.92 GB Notification: Performance of FrontEnd - DAE generated: time 5.601e-06/0.4337, allocations: 0 / 1.171 GB, free: 0.7031 MB / 0.92 GB Notification: Performance of FrontEnd: time 3.055e-06/0.4337, allocations: 0 / 1.171 GB, free: 0.7031 MB / 0.92 GB Notification: Performance of Transformations before backend: time 3.727e-05/0.4338, allocations: 3.938 kB / 1.171 GB, free: 0.6992 MB / 0.92 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 296 * Number of variables: 296 Notification: Performance of Generate backend data structure: time 0.004861/0.4386, allocations: 2.367 MB / 1.173 GB, free: 14.26 MB / 0.9356 GB Notification: Performance of prepare preOptimizeDAE: time 4.186e-05/0.4387, allocations: 8.031 kB / 1.173 GB, free: 14.25 MB / 0.9356 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.005463/0.4441, allocations: 0.6465 MB / 1.174 GB, free: 13.6 MB / 0.9356 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002786/0.447, allocations: 1.57 MB / 1.175 GB, free: 11.98 MB / 0.9356 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001479/0.4471, allocations: 128 kB / 1.175 GB, free: 11.84 MB / 0.9356 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002049/0.4473, allocations: 120 kB / 1.176 GB, free: 11.73 MB / 0.9356 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.00408/0.4514, allocations: 1.636 MB / 1.177 GB, free: 10 MB / 0.9356 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.024e-05/0.4515, allocations: 4 kB / 1.177 GB, free: 9.996 MB / 0.9356 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001462/0.4516, allocations: 48 kB / 1.177 GB, free: 9.949 MB / 0.9356 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.49e-05/0.4517, allocations: 35.94 kB / 1.177 GB, free: 9.914 MB / 0.9356 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.004977/0.4567, allocations: 1.449 MB / 1.179 GB, free: 8.457 MB / 0.9356 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 0.01064/0.4673, allocations: 6.958 MB / 1.185 GB, free: 1.156 MB / 0.9356 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002556/0.4699, allocations: 0.7594 MB / 1.186 GB, free: 400 kB / 0.9356 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001845/0.4718, allocations: 498.1 kB / 1.187 GB, free: 15.9 MB / 0.9512 GB Notification: Performance of preOpt evalFunc (simulation): time 0.001435/0.4732, allocations: 1.267 MB / 1.188 GB, free: 14.36 MB / 0.9512 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.002229/0.4755, allocations: 0.644 MB / 1.189 GB, free: 13.67 MB / 0.9512 GB Notification: Performance of pre-optimization done (n=69): time 3.436e-06/0.4755, allocations: 0 / 1.189 GB, free: 13.67 MB / 0.9512 GB Notification: Performance of matching and sorting (n=69): time 0.01075/0.4862, allocations: 2.041 MB / 1.191 GB, free: 11.61 MB / 0.9512 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001928/0.4865, allocations: 320.9 kB / 1.191 GB, free: 11.22 MB / 0.9512 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003144/0.4896, allocations: 1.391 MB / 1.192 GB, free: 9.816 MB / 0.9512 GB Notification: Performance of collectPreVariables (initialization): time 0.0002237/0.4899, allocations: 45.7 kB / 1.192 GB, free: 9.766 MB / 0.9512 GB Notification: Performance of collectInitialEqns (initialization): time 0.0009342/0.4908, allocations: 0.6997 MB / 1.193 GB, free: 9.059 MB / 0.9512 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003968/0.4912, allocations: 244.5 kB / 1.193 GB, free: 8.816 MB / 0.9512 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004917/0.4917, allocations: 250.3 kB / 1.193 GB, free: 8.566 MB / 0.9512 GB Notification: Performance of setup shared object (initialization): time 0.000138/0.4919, allocations: 345.9 kB / 1.194 GB, free: 8.223 MB / 0.9512 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002056/0.4939, allocations: 0.5005 MB / 1.194 GB, free: 7.719 MB / 0.9512 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002296/0.4962, allocations: 0.8078 MB / 1.195 GB, free: 6.789 MB / 0.9512 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.003976/0.5002, allocations: 1.162 MB / 1.196 GB, free: 5.531 MB / 0.9512 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.068e-05/0.5003, allocations: 0 / 1.196 GB, free: 5.531 MB / 0.9512 GB Notification: Performance of matching and sorting (n=117) (initialization): time 0.006868/0.5071, allocations: 1.641 MB / 1.198 GB, free: 3.871 MB / 0.9512 GB Notification: Performance of prepare postOptimizeDAE: time 5.552e-05/0.5072, allocations: 33.7 kB / 1.198 GB, free: 3.832 MB / 0.9512 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.99e-05/0.5073, allocations: 7.984 kB / 1.198 GB, free: 3.824 MB / 0.9512 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001457/0.5087, allocations: 371.6 kB / 1.198 GB, free: 3.465 MB / 0.9512 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001561/0.5103, allocations: 267.5 kB / 1.198 GB, free: 3.203 MB / 0.9512 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001229/0.5115, allocations: 0.8777 MB / 1.199 GB, free: 2.301 MB / 0.9512 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002658/0.5142, allocations: 270.5 kB / 1.2 GB, free: 2.035 MB / 0.9512 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001466/0.5144, allocations: 59.94 kB / 1.2 GB, free: 1.977 MB / 0.9512 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.002578/0.517, allocations: 0.7986 MB / 1.2 GB, free: 1.172 MB / 0.9512 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.002294/0.5193, allocations: 0.8058 MB / 1.201 GB, free: 252 kB / 0.9512 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.003762/0.523, allocations: 1.154 MB / 1.202 GB, free: 15 MB / 0.9669 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 6.532e-06/0.5231, allocations: 7.938 kB / 1.202 GB, free: 14.99 MB / 0.9669 GB Notification: Performance of matching and sorting (n=117) (initialization_lambda0): time 0.0067/0.5298, allocations: 1.622 MB / 1.204 GB, free: 13.35 MB / 0.9669 GB Notification: Performance of prepare postOptimizeDAE: time 5.202e-05/0.5298, allocations: 42.14 kB / 1.204 GB, free: 13.3 MB / 0.9669 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.245e-05/0.5299, allocations: 12 kB / 1.204 GB, free: 13.29 MB / 0.9669 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001286/0.5311, allocations: 353.7 kB / 1.204 GB, free: 12.95 MB / 0.9669 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001516/0.5327, allocations: 271.5 kB / 1.205 GB, free: 12.68 MB / 0.9669 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001243/0.5339, allocations: 0.8898 MB / 1.205 GB, free: 11.77 MB / 0.9669 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002669/0.5366, allocations: 235.2 kB / 1.206 GB, free: 11.54 MB / 0.9669 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001382/0.5368, allocations: 63.94 kB / 1.206 GB, free: 11.47 MB / 0.9669 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 28 * Number of states: 0 () * Number of discrete variables: 7 (N.count,$PRE.N.count,N.T_start,$PRE.N.T_start,heaPum.com.isOn,$PRE.heaPum.com.isOn,$whenCondition1) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (98): * Single equations (assignments): 96 * Array equations: 0 * Algorithm blocks: 1 * 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 {(2,17)} Notification: Performance of prepare postOptimizeDAE: time 0.00038/0.5372, allocations: 243.9 kB / 1.206 GB, free: 11.23 MB / 0.9669 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0004039/0.5376, allocations: 154.2 kB / 1.206 GB, free: 11.07 MB / 0.9669 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004539/0.5421, allocations: 1.217 MB / 1.207 GB, free: 9.84 MB / 0.9669 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.129e-05/0.5421, allocations: 8 kB / 1.207 GB, free: 9.832 MB / 0.9669 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 9.748e-06/0.5422, allocations: 7.938 kB / 1.207 GB, free: 9.824 MB / 0.9669 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.003659/0.5458, allocations: 1.029 MB / 1.208 GB, free: 8.758 MB / 0.9669 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.008241/0.5541, allocations: 3.275 MB / 1.211 GB, free: 5.359 MB / 0.9669 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.209e-05/0.5541, allocations: 4 kB / 1.211 GB, free: 5.355 MB / 0.9669 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001037/0.5552, allocations: 152.1 kB / 1.212 GB, free: 5.207 MB / 0.9669 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.001247/0.5564, allocations: 373.7 kB / 1.212 GB, free: 4.848 MB / 0.9669 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.278e-05/0.5565, allocations: 27.95 kB / 1.212 GB, free: 4.82 MB / 0.9669 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001151/0.5577, allocations: 0.8764 MB / 1.213 GB, free: 3.918 MB / 0.9669 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 7.695e-06/0.5577, allocations: 11.94 kB / 1.213 GB, free: 3.906 MB / 0.9669 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.006165/0.5639, allocations: 1.887 MB / 1.215 GB, free: 1.941 MB / 0.9669 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0008695/0.5647, allocations: 347 kB / 1.215 GB, free: 1.582 MB / 0.9669 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000409/0.5652, allocations: 27.98 kB / 1.215 GB, free: 1.555 MB / 0.9669 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001985/0.5672, allocations: 151.8 kB / 1.215 GB, free: 1.406 MB / 0.9669 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001658/0.5673, allocations: 64.3 kB / 1.215 GB, free: 1.344 MB / 0.9669 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 9.898e-05/0.5674, allocations: 40.08 kB / 1.215 GB, free: 1.305 MB / 0.9669 GB Notification: Performance of sorting global known variables: time 0.00193/0.5694, allocations: 0.9901 MB / 1.216 GB, free: 324 kB / 0.9669 GB Notification: Performance of sort global known variables: time 2.3e-07/0.5694, allocations: 4 kB / 1.216 GB, free: 320 kB / 0.9669 GB Notification: Performance of remove unused functions: time 0.003064/0.5725, allocations: 0.8969 MB / 1.217 GB, free: 15.41 MB / 0.9825 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 19 * Number of states: 2 (heaPum.con.vol.dynBal.U,heaPum.eva.vol.dynBal.U) * Number of discrete variables: 4 ($whenCondition1,heaPum.com.isOn,N.T_start,N.count) * Number of discrete states: 2 (N.count,heaPum.com.isOn) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (51): * Single equations (assignments): 46 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 2 * When equations: 2 * 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 {(2,17)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001502/0.574, allocations: 0.5432 MB / 1.218 GB, free: 14.87 MB / 0.9825 GB Notification: Performance of simCode: created initialization part: time 0.007058/0.581, allocations: 1.941 MB / 1.22 GB, free: 12.9 MB / 0.9825 GB Notification: Performance of simCode: created event and clocks part: time 8.666e-06/0.5811, allocations: 4 kB / 1.22 GB, free: 12.9 MB / 0.9825 GB Notification: Performance of simCode: created simulation system equations: time 0.002088/0.5832, allocations: 0.5448 MB / 1.22 GB, free: 12.36 MB / 0.9825 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004027/0.5872, allocations: 0.7832 MB / 1.221 GB, free: 11.59 MB / 0.9825 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.006421/0.5937, allocations: 3.212 MB / 1.224 GB, free: 8.293 MB / 0.9825 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0008845/0.5946, allocations: 1.207 MB / 1.225 GB, free: 7.055 MB / 0.9825 GB Notification: Performance of simCode: alias equations: time 0.00188/0.5964, allocations: 377.3 kB / 1.226 GB, free: 6.695 MB / 0.9825 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004021/0.5969, allocations: 139.2 kB / 1.226 GB, free: 6.559 MB / 0.9825 GB Notification: Performance of SimCode: time 7.21e-07/0.5969, allocations: 4 kB / 1.226 GB, free: 6.555 MB / 0.9825 GB Notification: Performance of Templates: time 0.5741/1.171, allocations: 37.22 MB / 1.262 GB, free: 167.2 MB / 0.9981 GB make -j1 -f Buildings_1.6_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed.makefile (rm -f Buildings_1.6_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed.pipe ; mkfifo Buildings_1.6_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed.pipe ; head -c 1048576 < Buildings_1.6_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed.pipe >> ../files/Buildings_1.6_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed.sim & ./Buildings_1.6_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_1.6_Buildings.Fluid.HeatPumps.Validation.ReciprocatingWaterToWater_VariableSpeed.pipe 2>&1)