Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_dev_IDEAS.Fluid.Humidifiers.Validation.SteamHumidifier_X.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/IDEAS 3.0.0-master/package.mo", uses=false) Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-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(IDEAS.Fluid.Humidifiers.Validation.SteamHumidifier_X,fileNamePrefix="IDEAS_dev_IDEAS_Fluid_Humidifiers_Validation_SteamHumidifier_X",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(IDEAS.Fluid.Humidifiers.Validation.SteamHumidifier_X,fileNamePrefix="IDEAS_dev_IDEAS_Fluid_Humidifiers_Validation_SteamHumidifier_X",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 0.001114/0.001114, allocations: 108 kB / 15.61 MB, free: 148 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00105/0.00105, allocations: 195.8 kB / 16.53 MB, free: 6.664 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.332/1.332, allocations: 222.9 MB / 240.2 MB, free: 4.383 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo): time 0.9135/0.9135, allocations: 135.1 MB / 425.5 MB, free: 11.98 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001228/0.001228, allocations: 64.23 kB / 0.5054 GB, free: 5.227 MB / 414.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.133/0.1342, allocations: 80.93 MB / 0.5845 GB, free: 4.457 MB / 494.1 MB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.Humidifiers.Validation.SteamHumidifier_X): time 0.4103/0.5445, allocations: 198.9 MB / 0.7787 GB, free: 5.902 MB / 0.5919 GB Notification: Performance of NFInst.instExpressions: time 0.005796/0.5503, allocations: 3.744 MB / 0.7824 GB, free: 2.148 MB / 0.5919 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0004612/0.5508, allocations: 27.81 kB / 0.7824 GB, free: 2.121 MB / 0.5919 GB Notification: Performance of NFTyping.typeComponents: time 0.001002/0.5518, allocations: 441.4 kB / 0.7828 GB, free: 1.688 MB / 0.5919 GB Notification: Performance of NFTyping.typeBindings: time 0.002582/0.5545, allocations: 1.248 MB / 0.7841 GB, free: 444 kB / 0.5919 GB Notification: Performance of NFTyping.typeClassSections: time 0.001687/0.5562, allocations: 0.7484 MB / 0.7848 GB, free: 15.69 MB / 0.6075 GB Notification: Performance of NFFlatten.flatten: time 0.001378/0.5576, allocations: 1.352 MB / 0.7861 GB, free: 14.34 MB / 0.6075 GB Notification: Performance of NFFlatten.resolveConnections: time 0.000631/0.5582, allocations: 0.4908 MB / 0.7866 GB, free: 13.84 MB / 0.6075 GB Notification: Performance of NFEvalConstants.evaluate: time 0.00204/0.5603, allocations: 0.9674 MB / 0.7875 GB, free: 12.88 MB / 0.6075 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0005335/0.5608, allocations: 458.1 kB / 0.788 GB, free: 12.43 MB / 0.6075 GB Notification: Performance of NFPackage.collectConstants: time 7.387e-05/0.5609, allocations: 44 kB / 0.788 GB, free: 12.39 MB / 0.6075 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001849/0.5627, allocations: 1.185 MB / 0.7892 GB, free: 11.2 MB / 0.6075 GB Notification: Performance of NFScalarize.scalarize: time 0.000177/0.5629, allocations: 203.3 kB / 0.7894 GB, free: 11 MB / 0.6075 GB Notification: Performance of NFVerifyModel.verify: time 0.0002952/0.5632, allocations: 326.3 kB / 0.7897 GB, free: 10.68 MB / 0.6075 GB Notification: Performance of NFConvertDAE.convert: time 0.001387/0.5646, allocations: 1.192 MB / 0.7908 GB, free: 9.488 MB / 0.6075 GB Notification: Performance of FrontEnd - DAE generated: time 4.538e-06/0.5647, allocations: 4 kB / 0.7909 GB, free: 9.484 MB / 0.6075 GB Notification: Performance of FrontEnd: time 1.382e-06/0.5647, allocations: 0 / 0.7909 GB, free: 9.484 MB / 0.6075 GB Notification: Performance of Transformations before backend: time 8.777e-06/0.5647, allocations: 0 / 0.7909 GB, free: 9.484 MB / 0.6075 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 98 * Number of variables: 98 Notification: Performance of Generate backend data structure: time 0.001888/0.5666, allocations: 1.052 MB / 0.7919 GB, free: 8.387 MB / 0.6075 GB Notification: Performance of prepare preOptimizeDAE: time 3.551e-05/0.5666, allocations: 12.03 kB / 0.7919 GB, free: 8.375 MB / 0.6075 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 8.528e-05/0.5667, allocations: 74.53 kB / 0.792 GB, free: 8.293 MB / 0.6075 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001331/0.568, allocations: 215 kB / 0.7922 GB, free: 8.082 MB / 0.6075 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0007173/0.5688, allocations: 0.5304 MB / 0.7927 GB, free: 7.512 MB / 0.6075 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.171e-05/0.5688, allocations: 29 kB / 0.7927 GB, free: 7.48 MB / 0.6075 GB Notification: Performance of preOpt expandDerOperator (simulation): time 6.53e-05/0.5689, allocations: 40 kB / 0.7928 GB, free: 7.441 MB / 0.6075 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001014/0.5699, allocations: 0.5465 MB / 0.7933 GB, free: 6.883 MB / 0.6075 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.288e-05/0.5699, allocations: 0 / 0.7933 GB, free: 6.883 MB / 0.6075 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 7.684e-05/0.57, allocations: 16 kB / 0.7933 GB, free: 6.867 MB / 0.6075 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.589e-05/0.57, allocations: 13 kB / 0.7933 GB, free: 6.855 MB / 0.6075 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.00123/0.5713, allocations: 0.5113 MB / 0.7938 GB, free: 6.344 MB / 0.6075 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 0.003117/0.5744, allocations: 2.231 MB / 0.796 GB, free: 3.926 MB / 0.6075 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0007439/0.5752, allocations: 347.8 kB / 0.7963 GB, free: 3.559 MB / 0.6075 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002298/0.5754, allocations: 148.7 kB / 0.7965 GB, free: 3.41 MB / 0.6075 GB Notification: Performance of preOpt evalFunc (simulation): time 0.001311/0.5767, allocations: 0.8416 MB / 0.7973 GB, free: 2.402 MB / 0.6075 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0003086/0.577, allocations: 190.4 kB / 0.7975 GB, free: 2.199 MB / 0.6075 GB Notification: Performance of pre-optimization done (n=26): time 1.623e-06/0.5771, allocations: 7.875 kB / 0.7975 GB, free: 2.191 MB / 0.6075 GB Notification: Performance of matching and sorting (n=26): time 0.0009355/0.578, allocations: 427.8 kB / 0.7979 GB, free: 1.77 MB / 0.6075 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.502e-05/0.5781, allocations: 89.05 kB / 0.798 GB, free: 1.664 MB / 0.6075 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0008282/0.5789, allocations: 0.6524 MB / 0.7986 GB, free: 1 MB / 0.6075 GB Notification: Performance of collectPreVariables (initialization): time 3.944e-05/0.579, allocations: 33.7 kB / 0.7986 GB, free: 0.9609 MB / 0.6075 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002267/0.5792, allocations: 315.8 kB / 0.7989 GB, free: 0.6484 MB / 0.6075 GB Notification: Performance of collectInitialBindings (initialization): time 7.308e-05/0.5793, allocations: 90.73 kB / 0.799 GB, free: 0.5586 MB / 0.6075 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000128/0.5794, allocations: 81.59 kB / 0.7991 GB, free: 484 kB / 0.6075 GB Notification: Performance of setup shared object (initialization): time 0.0001446/0.5796, allocations: 378.7 kB / 0.7995 GB, free: 96 kB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003738/0.5799, allocations: 132.8 kB / 0.7996 GB, free: 15.96 MB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004613/0.5804, allocations: 285 kB / 0.7999 GB, free: 15.62 MB / 0.6231 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.000632/0.5811, allocations: 376.8 kB / 0.8002 GB, free: 15.2 MB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.729e-06/0.5811, allocations: 8 kB / 0.8002 GB, free: 15.19 MB / 0.6231 GB Notification: Performance of matching and sorting (n=43) (initialization): time 0.0009979/0.5821, allocations: 474.4 kB / 0.8007 GB, free: 14.72 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 1.589e-05/0.5821, allocations: 8 kB / 0.8007 GB, free: 14.71 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.136e-06/0.5821, allocations: 4 kB / 0.8007 GB, free: 14.71 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.69e-05/0.5821, allocations: 4 kB / 0.8007 GB, free: 14.71 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004202/0.5826, allocations: 92.05 kB / 0.8008 GB, free: 14.62 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.068e-05/0.5826, allocations: 8 kB / 0.8008 GB, free: 14.61 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.000596/0.5832, allocations: 87.42 kB / 0.8009 GB, free: 14.52 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.801e-05/0.5832, allocations: 15.94 kB / 0.8009 GB, free: 14.51 MB / 0.6231 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.000503/0.5837, allocations: 295.5 kB / 0.8012 GB, free: 14.22 MB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0004407/0.5842, allocations: 282.8 kB / 0.8014 GB, free: 13.88 MB / 0.6231 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0006078/0.5848, allocations: 380.9 kB / 0.8018 GB, free: 13.46 MB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.884e-06/0.5848, allocations: 0 / 0.8018 GB, free: 13.46 MB / 0.6231 GB Notification: Performance of matching and sorting (n=43) (initialization_lambda0): time 0.0009663/0.5858, allocations: 477.7 kB / 0.8023 GB, free: 12.98 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 9.187e-06/0.5858, allocations: 8 kB / 0.8023 GB, free: 12.98 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.258e-06/0.5858, allocations: 4 kB / 0.8023 GB, free: 12.97 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 7.485e-06/0.5858, allocations: 8 kB / 0.8023 GB, free: 12.96 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004018/0.5862, allocations: 91.86 kB / 0.8024 GB, free: 12.88 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 7.254e-06/0.5863, allocations: 7.938 kB / 0.8024 GB, free: 12.87 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005466/0.5868, allocations: 67.73 kB / 0.8024 GB, free: 12.8 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.396e-05/0.5869, allocations: 19.98 kB / 0.8025 GB, free: 12.79 MB / 0.6231 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 18 * Number of states: 0 () * Number of discrete variables: 5 ($PRE.XSet.nextTimeEvent,$whenCondition1,XSet.nextTimeEventScaled,$PRE.XSet.nextTimeEventScaled,XSet.nextTimeEvent) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (43): * Single equations (assignments): 43 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * 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 0.000136/0.587, allocations: 205.5 kB / 0.8027 GB, free: 12.58 MB / 0.6231 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 7.922e-05/0.5871, allocations: 59.25 kB / 0.8027 GB, free: 12.52 MB / 0.6231 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0005684/0.5877, allocations: 325 kB / 0.803 GB, free: 12.19 MB / 0.6231 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.696e-06/0.5877, allocations: 0 / 0.803 GB, free: 12.19 MB / 0.6231 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.001e-06/0.5877, allocations: 8 kB / 0.803 GB, free: 12.18 MB / 0.6231 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.56e-06/0.5877, allocations: 3.938 kB / 0.803 GB, free: 12.18 MB / 0.6231 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001379/0.5891, allocations: 1.091 MB / 0.8041 GB, free: 11 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.138e-06/0.5891, allocations: 4 kB / 0.8041 GB, free: 10.99 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000181/0.5893, allocations: 31.98 kB / 0.8041 GB, free: 10.96 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (simulation): time 4.238e-06/0.5893, allocations: 7.938 kB / 0.8041 GB, free: 10.95 MB / 0.6231 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.172e-05/0.5893, allocations: 8 kB / 0.8041 GB, free: 10.95 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 5.05e-06/0.5893, allocations: 7.938 kB / 0.8042 GB, free: 10.94 MB / 0.6231 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.306e-06/0.5893, allocations: 4.312 kB / 0.8042 GB, free: 10.93 MB / 0.6231 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0005612/0.5899, allocations: 482.4 kB / 0.8046 GB, free: 10.42 MB / 0.6231 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001621/0.5901, allocations: 164.2 kB / 0.8048 GB, free: 10.24 MB / 0.6231 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.907e-05/0.5902, allocations: 4 kB / 0.8048 GB, free: 10.23 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003389/0.5905, allocations: 19.98 kB / 0.8048 GB, free: 10.21 MB / 0.6231 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 5.494e-05/0.5906, allocations: 27.86 kB / 0.8048 GB, free: 10.19 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.645e-05/0.5906, allocations: 12 kB / 0.8048 GB, free: 10.18 MB / 0.6231 GB Notification: Performance of sorting global known variables: time 0.0006268/0.5912, allocations: 482.9 kB / 0.8053 GB, free: 9.707 MB / 0.6231 GB Notification: Performance of sort global known variables: time 2e-07/0.5912, allocations: 4 kB / 0.8053 GB, free: 9.703 MB / 0.6231 GB Notification: Performance of remove unused functions: time 0.0007917/0.592, allocations: 267.6 kB / 0.8056 GB, free: 9.441 MB / 0.6231 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 11 * Number of states: 0 () * Number of discrete variables: 3 ($whenCondition1,XSet.nextTimeEvent,XSet.nextTimeEventScaled) * Number of discrete states: 2 (XSet.nextTimeEvent,XSet.nextTimeEventScaled) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (25): * Single equations (assignments): 23 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 2 * 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 0.001807/0.5939, allocations: 1.402 MB / 0.8069 GB, free: 8.188 MB / 0.6231 GB Notification: Performance of simCode: created initialization part: time 0.001124/0.595, allocations: 0.5175 MB / 0.8074 GB, free: 7.672 MB / 0.6231 GB Notification: Performance of simCode: created event and clocks part: time 2.104e-06/0.595, allocations: 0 / 0.8074 GB, free: 7.672 MB / 0.6231 GB Notification: Performance of simCode: created simulation system equations: time 0.0002097/0.5952, allocations: 123.8 kB / 0.8075 GB, free: 7.551 MB / 0.6231 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001281/0.5965, allocations: 277.5 kB / 0.8078 GB, free: 7.289 MB / 0.6231 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.006353/0.6029, allocations: 4.79 MB / 0.8125 GB, free: 2.266 MB / 0.6231 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004412/0.6033, allocations: 0.8821 MB / 0.8134 GB, free: 1.355 MB / 0.6231 GB Notification: Performance of simCode: alias equations: time 0.0006488/0.604, allocations: 172.8 kB / 0.8135 GB, free: 1.184 MB / 0.6231 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002686/0.6043, allocations: 203.3 kB / 0.8137 GB, free: 0.9844 MB / 0.6231 GB Notification: Performance of SimCode: time 2.71e-07/0.6043, allocations: 0 / 0.8137 GB, free: 0.9844 MB / 0.6231 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.03464/0.6389, allocations: 15.66 MB / 0.829 GB, free: 1.555 MB / 0.6387 GB Notification: Performance of buildModelFMU: Generate platform static: time 7.593/8.232, allocations: 5.188 kB / 0.829 GB, free: 1.551 MB / 0.6387 GB (rm -f IDEAS_dev_IDEAS.Fluid.Humidifiers.Validation.SteamHumidifier_X.pipe ; mkfifo IDEAS_dev_IDEAS.Fluid.Humidifiers.Validation.SteamHumidifier_X.pipe ; head -c 1048576 < IDEAS_dev_IDEAS.Fluid.Humidifiers.Validation.SteamHumidifier_X.pipe >> ../files/IDEAS_dev_IDEAS.Fluid.Humidifiers.Validation.SteamHumidifier_X.sim & python3 -m fmpy simulate --output-file IDEAS_dev_IDEAS.Fluid.Humidifiers.Validation.SteamHumidifier_X_res.csv --start-time 0 --stop-time 1080 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.432 IDEAS_dev_IDEAS_Fluid_Humidifiers_Validation_SteamHumidifier_X.fmu > IDEAS_dev_IDEAS.Fluid.Humidifiers.Validation.SteamHumidifier_X.pipe 2>&1)