Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.8.0.x_Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.Examples.BoreholeOneUTube.conf.json
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.1-maint.8.0.x/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 8.0.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.1-maint.8.0.x/package.mo)
Running command: translateModel(Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.Examples.BoreholeOneUTube,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.8.0.x_Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.Examples.BoreholeOneUTube")
translateModel(Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.Examples.BoreholeOneUTube,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.8.0.x_Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.Examples.BoreholeOneUTube")
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.1-maint.8.0.x/package.mo): time 1.657/1.657, allocations: 285.4 MB / 298 MB, free: 5.926 MB / 234.7 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.001109/0.001109, allocations: 172.9 kB / 366.4 MB, free: 2.094 MB / 298.7 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.663/1.663, allocations: 205.1 MB / 0.6248 GB, free: 7.727 MB / 474.7 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.0008618/0.0008617, allocations: 94.05 kB / 0.738 GB, free: 40.25 MB / 0.5105 GB
Notification: Performance of FrontEnd - loaded program: time 4.097e-05/4.099e-05, allocations: 12 kB / 0.8583 GB, free: 13.07 MB / 0.6042 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.7379/0.7379, allocations: 115.3 MB / 0.9709 GB, free: 77.86 MB / 0.6667 GB
Notification: Performance of FrontEnd - scodeFlatten: time 1.142/1.88, allocations: 413.7 MB / 1.375 GB, free: 145.9 MB / 0.8542 GB
Notification: Performance of FrontEnd - mkProgramGraph: time 0.0002779/1.881, allocations: 110.8 kB / 1.375 GB, free: 145.8 MB / 0.8542 GB
Notification: Performance of FrontEnd - DAE generated: time 10.3/12.19, allocations: 2.788 GB / 4.163 GB, free: 22.15 MB / 0.9792 GB
Notification: Performance of FrontEnd: time 4.539e-06/12.19, allocations: 0 / 4.163 GB, free: 22.15 MB / 0.9792 GB
Notification: Performance of Transformations before backend: time 0.005546/12.19, allocations: 311.8 kB / 4.163 GB, free: 21.85 MB / 0.9792 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 2147
 * Number of variables: 2147
Notification: Performance of Generate backend data structure: time 0.05045/12.24, allocations: 10.85 MB / 4.174 GB, free: 10.91 MB / 0.9792 GB
Notification: Performance of prepare preOptimizeDAE: time 7.672e-05/12.24, allocations: 11.97 kB / 4.174 GB, free: 10.9 MB / 0.9792 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01581/12.26, allocations: 1.626 MB / 4.176 GB, free: 9.254 MB / 0.9792 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 1.515/13.77, allocations: 18.66 MB / 4.194 GB, free: 108.6 MB / 0.9793 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.001242/13.77, allocations: 0.6411 MB / 4.194 GB, free: 108.6 MB / 0.9793 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.005279/13.78, allocations: 0.8632 MB / 4.195 GB, free: 108.6 MB / 0.9793 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.04223/13.82, allocations: 11.82 MB / 4.207 GB, free: 107.7 MB / 0.9793 GB
Notification: Performance of preOpt findStateOrder (simulation): time 0.0005868/13.82, allocations: 25 kB / 4.207 GB, free: 107.7 MB / 0.9793 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.003533/13.83, allocations: 355.1 kB / 4.207 GB, free: 107.7 MB / 0.9793 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001865/13.83, allocations: 213.9 kB / 4.207 GB, free: 107.7 MB / 0.9793 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.02873/13.85, allocations: 10.09 MB / 4.217 GB, free: 107.6 MB / 0.9793 GB
Warning: The model contains alias variables with conflicting start and/or 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 0.1452/14, allocations: 51.43 MB / 4.268 GB, free: 93.35 MB / 0.9793 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.01501/14.01, allocations: 5.787 MB / 4.273 GB, free: 93.23 MB / 0.9793 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.009953/14.02, allocations: 3.853 MB / 4.277 GB, free: 93.18 MB / 0.9793 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.002614/14.03, allocations: 2.185 MB / 4.279 GB, free: 90.83 MB / 0.9793 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0002123/14.03, allocations: 96.89 kB / 4.279 GB, free: 90.79 MB / 0.9793 GB
Notification: Performance of pre-optimization done (n=482): time 1.31e-05/14.03, allocations: 0 / 4.279 GB, free: 90.79 MB / 0.9793 GB
Notification: Performance of matching and sorting (n=482): time 0.02446/14.05, allocations: 7.441 MB / 4.286 GB, free: 89.86 MB / 0.9793 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001562/14.05, allocations: 364.7 kB / 4.287 GB, free: 89.48 MB / 0.9793 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.04621/14.1, allocations: 14.6 MB / 4.301 GB, free: 88.84 MB / 0.9793 GB
Notification: Performance of collectPreVariables (initialization): time 0.002118/14.1, allocations: 127.5 kB / 4.301 GB, free: 88.8 MB / 0.9793 GB
Notification: Performance of collectInitialEqns (initialization): time 0.01349/14.11, allocations: 6.018 MB / 4.307 GB, free: 87.32 MB / 0.9793 GB
Notification: Performance of collectInitialBindings (initialization): time 0.004482/14.12, allocations: 1.708 MB / 4.309 GB, free: 86.24 MB / 0.9793 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.001794/14.12, allocations: 128.6 kB / 4.309 GB, free: 86.24 MB / 0.9793 GB
Notification: Performance of setup shared object (initialization): time 0.001007/14.12, allocations: 0.5705 MB / 4.309 GB, free: 85.93 MB / 0.9793 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.008827/14.13, allocations: 3.462 MB / 4.313 GB, free: 85.91 MB / 0.9793 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.01156/14.14, allocations: 5.679 MB / 4.318 GB, free: 83.73 MB / 0.9793 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.009195/14.15, allocations: 4.58 MB / 4.323 GB, free: 83.61 MB / 0.9793 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 8.354e-05/14.15, allocations: 11.09 kB / 4.323 GB, free: 83.61 MB / 0.9793 GB
Notification: Performance of matching and sorting (n=847) (initialization): time 0.03255/14.18, allocations: 10.84 MB / 4.333 GB, free: 82.61 MB / 0.9793 GB
Notification: Performance of prepare postOptimizeDAE: time 0.01083/14.19, allocations: 25.32 MB / 4.358 GB, free: 72.42 MB / 0.9949 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.000406/14.2, allocations: 71.83 kB / 4.358 GB, free: 72.42 MB / 0.9949 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.002662/14.2, allocations: 1.015 MB / 4.359 GB, free: 72.26 MB / 0.9949 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.006545/14.2, allocations: 1.448 MB / 4.361 GB, free: 72.26 MB / 0.9949 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.02797/14.23, allocations: 33.04 MB / 4.393 GB, free: 61.62 MB / 1.011 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0192/14.25, allocations: 1.514 MB / 4.394 GB, free: 61.2 MB / 1.011 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.002437/14.25, allocations: 276.2 kB / 4.395 GB, free: 61.2 MB / 1.011 GB
Notification: Performance of prepare postOptimizeDAE: time 1.86e-05/14.25, allocations: 3.562 kB / 4.395 GB, free: 61.2 MB / 1.011 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.02486/14.28, allocations: 9.747 MB / 4.404 GB, free: 58.73 MB / 1.011 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0004672/14.28, allocations: 72.38 kB / 4.404 GB, free: 58.73 MB / 1.011 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.001999/14.28, allocations: 0.9881 MB / 4.405 GB, free: 58.32 MB / 1.011 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.006583/14.29, allocations: 1.446 MB / 4.407 GB, free: 58.28 MB / 1.011 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.03281/14.32, allocations: 33.29 MB / 4.439 GB, free: 60.2 MB / 1.042 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.01697/14.34, allocations: 1.414 MB / 4.44 GB, free: 59.74 MB / 1.042 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.002881/14.34, allocations: 274 kB / 4.441 GB, free: 59.69 MB / 1.042 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 183
 * Number of states: 0 ()
 * Number of discrete variables: 0 ()
 * Number of discrete states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (757):
 * Single equations (assignments): 727
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 10
 * When equations: 0
 * If-equations: 0
 * Equation systems (linear and non-linear blocks): 0
 * Torn equation systems: 20
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems: 20 {(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3}
 * Non-linear torn systems: 0
Notification: Performance of prepare postOptimizeDAE: time 0.005996/14.35, allocations: 494.8 kB / 4.441 GB, free: 59.38 MB / 1.042 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.009463/14.36, allocations: 1.162 MB / 4.442 GB, free: 58.77 MB / 1.042 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.02633/14.38, allocations: 8.308 MB / 4.45 GB, free: 55.68 MB / 1.042 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.164e-05/14.38, allocations: 45.72 kB / 4.45 GB, free: 55.68 MB / 1.042 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 7.261e-05/14.38, allocations: 13.84 kB / 4.45 GB, free: 55.68 MB / 1.042 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.01417/14.4, allocations: 6.422 MB / 4.457 GB, free: 53.34 MB / 1.042 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0869/14.48, allocations: 44.06 MB / 4.5 GB, free: 21.8 MB / 1.042 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.277e-05/14.48, allocations: 10.81 kB / 4.5 GB, free: 21.8 MB / 1.042 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.004687/14.49, allocations: 1.068 MB / 4.501 GB, free: 21.74 MB / 1.042 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.002097/14.49, allocations: 0.9755 MB / 4.502 GB, free: 21.34 MB / 1.042 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.001122/14.49, allocations: 148.4 kB / 4.502 GB, free: 21.27 MB / 1.042 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.02608/14.52, allocations: 33.17 MB / 4.534 GB, free: 23.04 MB / 1.073 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.465e-05/14.52, allocations: 15.09 kB / 4.534 GB, free: 23.04 MB / 1.073 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.03077/14.55, allocations: 15.61 MB / 4.55 GB, free: 13.88 MB / 1.073 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.01539/14.56, allocations: 2.96 MB / 4.552 GB, free: 12.19 MB / 1.073 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.007634/14.57, allocations: 128.5 kB / 4.553 GB, free: 12.12 MB / 1.073 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.01488/14.59, allocations: 0.6678 MB / 4.553 GB, free: 11.98 MB / 1.073 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.002231/14.59, allocations: 354.1 kB / 4.554 GB, free: 11.92 MB / 1.073 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.001713/14.59, allocations: 194 kB / 4.554 GB, free: 11.88 MB / 1.073 GB
Notification: Performance of sorting global known variables: time 0.0355/14.63, allocations: 11.92 MB / 4.565 GB, free: 7.672 MB / 1.073 GB
Notification: Performance of sort global known variables: time 4.41e-07/14.63, allocations: 3.938 kB / 4.565 GB, free: 7.672 MB / 1.073 GB
Notification: Performance of remove unused functions: time 0.04331/14.67, allocations: 6.512 MB / 4.572 GB, free: 6.715 MB / 1.073 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 45
 * Number of states: 40 (borHol.intHex[1].vol1.dynBal.U,borHol.intHex[1].vol2.dynBal.U,borHol.intHex[1].intResUTub.capFil1.T,borHol.intHex[1].intResUTub.capFil2.T,borHol.intHex[2].vol1.dynBal.U,borHol.intHex[2].vol2.dynBal.U,borHol.intHex[2].intResUTub.capFil1.T,borHol.intHex[2].intResUTub.capFil2.T,borHol.intHex[3].vol1.dynBal.U,borHol.intHex[3].vol2.dynBal.U,borHol.intHex[3].intResUTub.capFil1.T,borHol.intHex[3].intResUTub.capFil2.T,borHol.intHex[4].vol1.dynBal.U,borHol.intHex[4].vol2.dynBal.U,borHol.intHex[4].intResUTub.capFil1.T,borHol.intHex[4].intResUTub.capFil2.T,borHol.intHex[5].vol1.dynBal.U,borHol.intHex[5].vol2.dynBal.U,borHol.intHex[5].intResUTub.capFil1.T,borHol.intHex[5].intResUTub.capFil2.T,borHol.intHex[6].vol1.dynBal.U,borHol.intHex[6].vol2.dynBal.U,borHol.intHex[6].intResUTub.capFil1.T,borHol.intHex[6].intResUTub.capFil2.T,borHol.intHex[7].vol1.dynBal.U,borHol.intHex[7].vol2.dynBal.U,borHol.intHex[7].intResUTub.capFil1.T,borHol.intHex[7].intResUTub.capFil2.T,borHol.intHex[8].vol1.dynBal.U,borHol.intHex[8].vol2.dynBal.U,borHol.intHex[8].intResUTub.capFil1.T,borHol.intHex[8].intResUTub.capFil2.T,borHol.intHex[9].vol1.dynBal.U,borHol.intHex[9].vol2.dynBal.U,borHol.intHex[9].intResUTub.capFil1.T,borHol.intHex[9].intResUTub.capFil2.T,borHol.intHex[10].vol1.dynBal.U,borHol.intHex[10].vol2.dynBal.U,borHol.intHex[10].intResUTub.capFil1.T,borHol.intHex[10].intResUTub.capFil2.T)
 * Number of discrete variables: 0 ()
 * Number of discrete states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (428):
 * Single equations (assignments): 402
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 6
 * When equations: 0
 * If-equations: 0
 * Equation systems (linear and non-linear blocks): 0
 * Torn equation systems: 20
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems: 20 {(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3}
 * Non-linear torn systems: 0
Notification: Performance of Backend phase and start with SimCode phase: time 0.006137/14.68, allocations: 1.418 MB / 4.573 GB, free: 6.008 MB / 1.073 GB
Notification: Performance of simCode: created initialization part: time 0.8489/15.53, allocations: 18.28 MB / 4.591 GB, free: 177.2 MB / 1.073 GB
Notification: Performance of simCode: created event and clocks part: time 3.241e-05/15.53, allocations: 5.281 kB / 4.591 GB, free: 177.2 MB / 1.073 GB
Notification: Performance of simCode: created simulation system equations: time 0.01058/15.54, allocations: 5.625 MB / 4.596 GB, free: 175 MB / 1.073 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.04682/15.58, allocations: 7.958 MB / 4.604 GB, free: 174.8 MB / 1.073 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0695/15.65, allocations: 25.93 MB / 4.63 GB, free: 170.3 MB / 1.073 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.02844/15.68, allocations: 9.571 MB / 4.639 GB, free: 169.2 MB / 1.073 GB
Notification: Performance of simCode: alias equations: time 0.06001/15.74, allocations: 13.11 MB / 4.652 GB, free: 168.5 MB / 1.073 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.006695/15.75, allocations: 0.6466 MB / 4.652 GB, free: 168.5 MB / 1.073 GB
Notification: Performance of SimCode: time 1.483e-06/15.75, allocations: 2.297 kB / 4.652 GB, free: 168.5 MB / 1.073 GB
Notification: Performance of Templates: time 0.4785/16.23, allocations: 295 MB / 4.94 GB, free: 17.52 MB / 1.073 GB
make -j1 -f Buildings_maint.8.0.x_Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.Examples.BoreholeOneUTube.makefile
(rm -f Buildings_maint.8.0.x_Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.Examples.BoreholeOneUTube.pipe ; mkfifo Buildings_maint.8.0.x_Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.Examples.BoreholeOneUTube.pipe ; head -c 1048576 < Buildings_maint.8.0.x_Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.Examples.BoreholeOneUTube.pipe >> ../files/Buildings_maint.8.0.x_Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.Examples.BoreholeOneUTube.sim & ./Buildings_maint.8.0.x_Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.Examples.BoreholeOneUTube -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.8.0.x_Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.Examples.BoreholeOneUTube.pipe 2>&1)