Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.GFunction_100boreholes.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 11.0.1-master/package.mo", uses=false) Using package Buildings with version 11.0.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.0.1-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.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.GFunction_100boreholes,fileNamePrefix="Buildings_latest_Buildings_Fluid_Geothermal_Borefields_BaseClasses_HeatTransfer_ThermalResponseFactors_Validation_GFunction_100boreholes",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.GFunction_100boreholes,fileNamePrefix="Buildings_latest_Buildings_Fluid_Geothermal_Borefields_BaseClasses_HeatTransfer_ThermalResponseFactors_Validation_GFunction_100boreholes",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 0.001896/0.001896, 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 0.002214/0.002214, allocations: 198.2 kB / 16.54 MB, free: 6.672 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.394/1.394, allocations: 222.9 MB / 240.2 MB, free: 4.406 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.0.1-master/package.mo): time 2.806/2.806, allocations: 469.4 MB / 0.742 GB, free: 7.66 MB / 0.5919 GB Notification: Performance of FrontEnd - loaded program: time 0.001379/0.001379, allocations: 68.7 kB / 0.9083 GB, free: 34.41 MB / 0.7169 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.337/0.3384, allocations: 159.1 MB / 1.064 GB, free: 14.43 MB / 0.8262 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.GFunction_100boreholes): time 0.002665/0.3411, allocations: 1.438 MB / 1.065 GB, free: 12.97 MB / 0.8262 GB Notification: Performance of NFInst.instExpressions: time 0.006381/0.3475, allocations: 4.2 MB / 1.069 GB, free: 8.758 MB / 0.8262 GB Notification: Performance of NFInst.updateImplicitVariability: time 5.571e-05/0.3476, allocations: 0 / 1.069 GB, free: 8.758 MB / 0.8262 GB Notification: Performance of NFTyping.typeComponents: time 0.0001031/0.3477, allocations: 19.86 kB / 1.069 GB, free: 8.738 MB / 0.8262 GB Notification: Performance of NFTyping.typeBindings: time 0.0002431/0.348, allocations: 35.77 kB / 1.069 GB, free: 8.703 MB / 0.8262 GB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.0.1-master/Utilities/Clustering/KMeans.mo:96:7-96:35:writable] Warning: inertia was used before it was defined (given a value). Additional such uses may exist for the variable, but some messages were suppressed. Notification: Performance of NFTyping.typeClassSections: time 0.003833/0.3518, allocations: 1.49 MB / 1.071 GB, free: 7.215 MB / 0.8262 GB Notification: Performance of NFFlatten.flatten: time 0.00014/0.352, allocations: 91.73 kB / 1.071 GB, free: 7.125 MB / 0.8262 GB Notification: Performance of NFFlatten.resolveConnections: time 3.967e-05/0.352, allocations: 4 kB / 1.071 GB, free: 7.121 MB / 0.8262 GB Notification: Performance of NFEvalConstants.evaluate: time 8.072e-05/0.3521, allocations: 55.77 kB / 1.071 GB, free: 7.066 MB / 0.8262 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0002165/0.3523, allocations: 169.6 kB / 1.071 GB, free: 6.902 MB / 0.8262 GB Notification: Performance of NFPackage.collectConstants: time 5.056e-05/0.3524, allocations: 16 kB / 1.071 GB, free: 6.887 MB / 0.8262 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003211/0.3556, allocations: 2.157 MB / 1.073 GB, free: 4.727 MB / 0.8262 GB Notification: Performance of NFScalarize.scalarize: time 0.0006987/0.3563, allocations: 0.7537 MB / 1.074 GB, free: 3.969 MB / 0.8262 GB Notification: Performance of NFVerifyModel.verify: time 0.0004346/0.3568, allocations: 0.5002 MB / 1.074 GB, free: 3.465 MB / 0.8262 GB Notification: Performance of NFConvertDAE.convert: time 0.003277/0.36, allocations: 2.528 MB / 1.077 GB, free: 0.9258 MB / 0.8262 GB Notification: Performance of FrontEnd - DAE generated: time 3.437e-06/0.3601, allocations: 0 / 1.077 GB, free: 0.9258 MB / 0.8262 GB Notification: Performance of FrontEnd: time 1.022e-06/0.3601, allocations: 0 / 1.077 GB, free: 0.9258 MB / 0.8262 GB Notification: Performance of Transformations before backend: time 2.375e-05/0.3601, allocations: 4 kB / 1.077 GB, free: 0.9219 MB / 0.8262 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 7 * Number of variables: 7 Notification: Performance of Generate backend data structure: time 0.01169/0.3718, allocations: 1.962 MB / 1.079 GB, free: 14.9 MB / 0.8419 GB Notification: Performance of prepare preOptimizeDAE: time 3.904e-05/0.3718, allocations: 8.031 kB / 1.079 GB, free: 14.89 MB / 0.8419 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 3.886e-05/0.3719, allocations: 38.75 kB / 1.079 GB, free: 14.85 MB / 0.8419 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0004583/0.3723, allocations: 158.6 kB / 1.079 GB, free: 14.69 MB / 0.8419 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0005843/0.3729, allocations: 0.5735 MB / 1.08 GB, free: 14.05 MB / 0.8419 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 8.606e-06/0.373, allocations: 384 / 1.08 GB, free: 14.05 MB / 0.8419 GB Notification: Performance of preOpt expandDerOperator (simulation): time 4.144e-05/0.373, allocations: 12.38 kB / 1.08 GB, free: 14.04 MB / 0.8419 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0004313/0.3735, allocations: 403.2 kB / 1.08 GB, free: 13.64 MB / 0.8419 GB Notification: Performance of preOpt findStateOrder (simulation): time 6.823e-06/0.3735, allocations: 0 / 1.08 GB, free: 13.64 MB / 0.8419 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 1.205e-05/0.3735, allocations: 0 / 1.08 GB, free: 13.64 MB / 0.8419 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.618e-06/0.3735, allocations: 0 / 1.08 GB, free: 13.64 MB / 0.8419 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0004245/0.3739, allocations: 435.7 kB / 1.08 GB, free: 13.21 MB / 0.8419 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0008969/0.3748, allocations: 0.9219 MB / 1.081 GB, free: 12.23 MB / 0.8419 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0005627/0.3754, allocations: 0.5672 MB / 1.082 GB, free: 11.64 MB / 0.8419 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002985/0.3757, allocations: 337.7 kB / 1.082 GB, free: 11.31 MB / 0.8419 GB Notification: Performance of preOpt evalFunc (simulation): time 0.001071/0.3768, allocations: 1.032 MB / 1.083 GB, free: 10.05 MB / 0.8419 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.000418/0.3772, allocations: 412.7 kB / 1.084 GB, free: 9.633 MB / 0.8419 GB Notification: Performance of pre-optimization done (n=8): time 1.413e-06/0.3772, allocations: 0 / 1.084 GB, free: 9.633 MB / 0.8419 GB Notification: Performance of matching and sorting (n=8): time 0.00145/0.3787, allocations: 1.366 MB / 1.085 GB, free: 8.258 MB / 0.8419 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.404e-05/0.3788, allocations: 85.09 kB / 1.085 GB, free: 8.156 MB / 0.8419 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002615/0.3814, allocations: 2.22 MB / 1.087 GB, free: 5.906 MB / 0.8419 GB Notification: Performance of collectPreVariables (initialization): time 4.134e-05/0.3815, allocations: 33.7 kB / 1.087 GB, free: 5.867 MB / 0.8419 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004021/0.3819, allocations: 0.5173 MB / 1.088 GB, free: 5.344 MB / 0.8419 GB Notification: Performance of collectInitialBindings (initialization): time 4.517e-05/0.3819, allocations: 19.92 kB / 1.088 GB, free: 5.324 MB / 0.8419 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004006/0.3823, allocations: 463.3 kB / 1.088 GB, free: 4.863 MB / 0.8419 GB Notification: Performance of setup shared object (initialization): time 0.0001031/0.3824, allocations: 301.1 kB / 1.088 GB, free: 4.566 MB / 0.8419 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001912/0.3843, allocations: 2.057 MB / 1.09 GB, free: 2.508 MB / 0.8419 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001843/0.3862, allocations: 2.23 MB / 1.093 GB, free: 276 kB / 0.8419 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.008232/0.3944, allocations: 4.693 MB / 1.097 GB, free: 11.45 MB / 0.8575 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.298e-06/0.3945, allocations: 0 / 1.097 GB, free: 11.45 MB / 0.8575 GB Notification: Performance of matching and sorting (n=422) (initialization): time 0.006443/0.4009, allocations: 6.247 MB / 1.103 GB, free: 5.094 MB / 0.8575 GB Notification: Performance of prepare postOptimizeDAE: time 1.86e-05/0.401, allocations: 5.406 kB / 1.103 GB, free: 5.09 MB / 0.8575 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.86e-05/0.401, allocations: 4 kB / 1.103 GB, free: 5.086 MB / 0.8575 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.153e-05/0.401, allocations: 0 / 1.103 GB, free: 5.086 MB / 0.8575 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001325/0.4011, allocations: 20.02 kB / 1.103 GB, free: 5.066 MB / 0.8575 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 6.372e-06/0.4012, allocations: 0 / 1.103 GB, free: 5.066 MB / 0.8575 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007009/0.4019, allocations: 299.2 kB / 1.104 GB, free: 4.77 MB / 0.8575 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.206e-05/0.4019, allocations: 23.98 kB / 1.104 GB, free: 4.746 MB / 0.8575 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 2 * Number of states: 0 () * Number of discrete variables: 116 (cluSiz[5],cluSiz[4],cluSiz[3],cluSiz[2],cluSiz[1],labels[100],labels[99],labels[98],labels[97],labels[96],labels[95],labels[94],labels[93],labels[92],labels[91],labels[90],labels[89],labels[88],labels[87],labels[86],labels[85],labels[84],labels[83],labels[82],labels[81],labels[80],labels[79],labels[78],labels[77],labels[76],labels[75],labels[74],labels[73],labels[72],labels[71],labels[70],labels[69],labels[68],labels[67],labels[66],labels[65],labels[64],labels[63],labels[62],labels[61],labels[60],labels[59],labels[58],labels[57],labels[56],labels[55],labels[54],labels[53],labels[52],labels[51],labels[50],labels[49],labels[48],labels[47],labels[46],labels[45],labels[44],labels[43],labels[42],labels[41],labels[40],labels[39],labels[38],labels[37],labels[36],labels[35],labels[34],labels[33],labels[32],labels[31],labels[30],labels[29],labels[28],labels[27],labels[26],labels[25],labels[24],labels[23],labels[22],labels[21],labels[20],labels[19],labels[18],labels[17],labels[16],labels[15],labels[14],labels[13],labels[12],labels[11],labels[10],labels[9],labels[8],labels[7],labels[6],labels[5],labels[4],labels[3],labels[2],labels[1],gFun2,$PRE.gFun2,gFun1,$PRE.gFun1,t2,$PRE.t2,t1,$PRE.t1,k,$PRE.k,$whenCondition1) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (17): * Single equations (assignments): 13 * Array equations: 2 * Algorithm blocks: 0 * Record equations: 2 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.0006851/0.4026, allocations: 472.4 kB / 1.104 GB, free: 4.277 MB / 0.8575 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001632/0.4028, allocations: 149.6 kB / 1.104 GB, free: 4.129 MB / 0.8575 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0003859/0.4032, allocations: 144 kB / 1.104 GB, free: 3.977 MB / 0.8575 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.25e-06/0.4032, allocations: 4 kB / 1.104 GB, free: 3.973 MB / 0.8575 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.949e-06/0.4032, allocations: 0 / 1.104 GB, free: 3.973 MB / 0.8575 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.496e-06/0.4032, allocations: 0 / 1.104 GB, free: 3.973 MB / 0.8575 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.000746/0.404, allocations: 0.7711 MB / 1.105 GB, free: 3.148 MB / 0.8575 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.958e-06/0.404, allocations: 3.938 kB / 1.105 GB, free: 3.145 MB / 0.8575 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 7.594e-05/0.4041, allocations: 12.02 kB / 1.105 GB, free: 3.133 MB / 0.8575 GB Notification: Performance of postOpt tearingSystem (simulation): time 5.32e-06/0.4041, allocations: 4 kB / 1.105 GB, free: 3.129 MB / 0.8575 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.139e-05/0.4041, allocations: 0 / 1.105 GB, free: 3.129 MB / 0.8575 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 4.038e-06/0.4041, allocations: 0 / 1.105 GB, free: 3.129 MB / 0.8575 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.433e-06/0.4041, allocations: 3.938 kB / 1.105 GB, free: 3.125 MB / 0.8575 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0009768/0.4051, allocations: 1.076 MB / 1.106 GB, free: 2.023 MB / 0.8575 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002103/0.4053, allocations: 222.7 kB / 1.106 GB, free: 1.785 MB / 0.8575 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001253/0.4054, allocations: 4 kB / 1.106 GB, free: 1.781 MB / 0.8575 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0002222/0.4057, allocations: 7.984 kB / 1.106 GB, free: 1.773 MB / 0.8575 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 3.211e-05/0.4057, allocations: 7.938 kB / 1.106 GB, free: 1.766 MB / 0.8575 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.828e-05/0.4057, allocations: 15.97 kB / 1.106 GB, free: 1.75 MB / 0.8575 GB Notification: Performance of sorting global known variables: time 0.001491/0.4072, allocations: 1.302 MB / 1.108 GB, free: 444 kB / 0.8575 GB Notification: Performance of sort global known variables: time 1.1e-07/0.4072, allocations: 0 / 1.108 GB, free: 444 kB / 0.8575 GB Notification: Performance of remove unused functions: time 0.001619/0.4089, allocations: 0.6287 MB / 1.108 GB, free: 15.8 MB / 0.8731 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 2 * Number of states: 0 () * Number of discrete variables: 6 ($whenCondition1,k,t1,t2,gFun1,gFun2) * Number of discrete states: 2 (k,t2) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (8): * Single equations (assignments): 3 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 5 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.003347/0.4122, allocations: 2.22 MB / 1.11 GB, free: 13.57 MB / 0.8731 GB Notification: Performance of simCode: created initialization part: time 0.003/0.4152, allocations: 3.564 MB / 1.114 GB, free: 9.992 MB / 0.8731 GB Notification: Performance of simCode: created event and clocks part: time 3.156e-06/0.4153, allocations: 0 / 1.114 GB, free: 9.992 MB / 0.8731 GB Notification: Performance of simCode: created simulation system equations: time 0.0003188/0.4156, allocations: 339.7 kB / 1.114 GB, free: 9.66 MB / 0.8731 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0004443/0.416, allocations: 59.91 kB / 1.114 GB, free: 9.598 MB / 0.8731 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.3806/0.7967, allocations: 50.04 MB / 1.163 GB, free: 7.023 MB / 0.92 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0007375/0.7975, allocations: 1.235 MB / 1.164 GB, free: 5.762 MB / 0.92 GB Notification: Performance of simCode: alias equations: time 0.0002099/0.7977, allocations: 32.56 kB / 1.164 GB, free: 5.73 MB / 0.92 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004867/0.7982, allocations: 0.5227 MB / 1.165 GB, free: 5.207 MB / 0.92 GB Notification: Performance of SimCode: time 6.51e-07/0.7982, allocations: 0 / 1.165 GB, free: 5.207 MB / 0.92 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.1171/0.9153, allocations: 78.93 MB / 1.242 GB, free: 6.367 MB / 0.9981 GB Notification: Performance of buildModelFMU: Generate platform static: time 9.385/10.3, allocations: 2.625 kB / 1.242 GB, free: 6.367 MB / 0.9981 GB (rm -f Buildings_latest_Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.GFunction_100boreholes.pipe ; mkfifo Buildings_latest_Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.GFunction_100boreholes.pipe ; head -c 1048576 < Buildings_latest_Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.GFunction_100boreholes.pipe >> ../files/Buildings_latest_Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.GFunction_100boreholes.sim & python3 -m fmpy simulate --output-file Buildings_latest_Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.GFunction_100boreholes_res.csv --start-time 0 --stop-time 3.7e+11 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 1.48e+08 Buildings_latest_Buildings_Fluid_Geothermal_Borefields_BaseClasses_HeatTransfer_ThermalResponseFactors_Validation_GFunction_100boreholes.fmu > Buildings_latest_Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.GFunction_100boreholes.pipe 2>&1)