Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr BuildingSystems_BuildingSystems.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/NcDataReader2 2.5.1-master/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo", uses=false) Using package BuildingSystems with version 2.0.0-beta (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo) Using package NcDataReader2 with version 2.5.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-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: translateModel(BuildingSystems.Fluid.Humidifiers.Validation.SteamHumidifier_X,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.Humidifiers.Validation.SteamHumidifier_X") translateModel(BuildingSystems.Fluid.Humidifiers.Validation.SteamHumidifier_X,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.Humidifiers.Validation.SteamHumidifier_X") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001188/0.001188, allocations: 109.3 kB / 15.99 MB, free: 6.359 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00122/0.00122, allocations: 194.5 kB / 16.91 MB, free: 6.195 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.252/1.252, allocations: 222.9 MB / 240.6 MB, free: 15.44 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.002023/0.002023, allocations: 283.8 kB / 291 MB, free: 14.7 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo): time 0.9052/0.9052, allocations: 169.2 MB / 0.4985 GB, free: 4.73 MB / 382.1 MB Notification: Performance of FrontEnd - loaded program: time 0.00165/0.00165, allocations: 102.7 kB / 0.5953 GB, free: 15.52 MB / 414.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1856/0.1872, allocations: 86.97 MB / 0.6803 GB, free: 8.559 MB / 494.1 MB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.Humidifiers.Validation.SteamHumidifier_X): time 0.5232/0.7106, allocations: 196.4 MB / 0.8721 GB, free: 10.9 MB / 0.6387 GB Notification: Performance of NFInst.instExpressions: time 0.006245/0.7168, allocations: 3.706 MB / 0.8757 GB, free: 7.184 MB / 0.6387 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0008619/0.7177, allocations: 27.81 kB / 0.8757 GB, free: 7.156 MB / 0.6387 GB Notification: Performance of NFTyping.typeComponents: time 0.001165/0.7189, allocations: 386.3 kB / 0.8761 GB, free: 6.777 MB / 0.6387 GB Notification: Performance of NFTyping.typeBindings: time 0.002921/0.7219, allocations: 1.175 MB / 0.8772 GB, free: 5.598 MB / 0.6387 GB Notification: Performance of NFTyping.typeClassSections: time 0.00183/0.7237, allocations: 0.6716 MB / 0.8779 GB, free: 4.934 MB / 0.6387 GB Notification: Performance of NFFlatten.flatten: time 0.00172/0.7255, allocations: 1.367 MB / 0.8792 GB, free: 3.562 MB / 0.6387 GB Notification: Performance of NFFlatten.resolveConnections: time 0.000652/0.7261, allocations: 490.6 kB / 0.8797 GB, free: 3.082 MB / 0.6387 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002565/0.7287, allocations: 0.9765 MB / 0.8806 GB, free: 2.109 MB / 0.6387 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0006323/0.7293, allocations: 482.1 kB / 0.8811 GB, free: 1.637 MB / 0.6387 GB Notification: Performance of NFPackage.collectConstants: time 6.517e-05/0.7294, allocations: 48 kB / 0.8812 GB, free: 1.59 MB / 0.6387 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002087/0.7315, allocations: 1.228 MB / 0.8824 GB, free: 368 kB / 0.6387 GB Notification: Performance of NFScalarize.scalarize: time 0.0001847/0.7317, allocations: 195.4 kB / 0.8825 GB, free: 172 kB / 0.6387 GB Notification: Performance of NFVerifyModel.verify: time 0.0003167/0.732, allocations: 334.3 kB / 0.8829 GB, free: 15.84 MB / 0.6544 GB Notification: Performance of NFConvertDAE.convert: time 0.001186/0.7332, allocations: 0.8615 MB / 0.8837 GB, free: 14.97 MB / 0.6544 GB Notification: Performance of FrontEnd - DAE generated: time 5.731e-06/0.7332, allocations: 4 kB / 0.8837 GB, free: 14.97 MB / 0.6544 GB Notification: Performance of FrontEnd: time 1.583e-06/0.7332, allocations: 0 / 0.8837 GB, free: 14.97 MB / 0.6544 GB Notification: Performance of Transformations before backend: time 9.067e-06/0.7333, allocations: 0 / 0.8837 GB, free: 14.97 MB / 0.6544 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 0.001903/0.7352, allocations: 1.052 MB / 0.8847 GB, free: 13.87 MB / 0.6544 GB Notification: Performance of prepare preOptimizeDAE: time 3.953e-05/0.7352, allocations: 8.031 kB / 0.8847 GB, free: 13.86 MB / 0.6544 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001282/0.7365, allocations: 214.9 kB / 0.8849 GB, free: 13.65 MB / 0.6544 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0007214/0.7372, allocations: 0.5381 MB / 0.8855 GB, free: 13.07 MB / 0.6544 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.161e-05/0.7373, allocations: 32.94 kB / 0.8855 GB, free: 13.04 MB / 0.6544 GB Notification: Performance of preOpt expandDerOperator (simulation): time 6.682e-05/0.7374, allocations: 40 kB / 0.8855 GB, free: 13 MB / 0.6544 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0009928/0.7384, allocations: 0.5349 MB / 0.8861 GB, free: 12.46 MB / 0.6544 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.358e-05/0.7384, allocations: 4 kB / 0.8861 GB, free: 12.45 MB / 0.6544 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.631e-05/0.7384, allocations: 20 kB / 0.8861 GB, free: 12.43 MB / 0.6544 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.991e-05/0.7385, allocations: 13 kB / 0.8861 GB, free: 12.42 MB / 0.6544 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001079/0.7396, allocations: 0.5074 MB / 0.8866 GB, free: 11.91 MB / 0.6544 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 0.003046/0.7426, allocations: 2.227 MB / 0.8888 GB, free: 9.496 MB / 0.6544 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0007337/0.7434, allocations: 347.8 kB / 0.8891 GB, free: 9.129 MB / 0.6544 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002134/0.7436, allocations: 144.7 kB / 0.8892 GB, free: 8.984 MB / 0.6544 GB Notification: Performance of preOpt evalFunc (simulation): time 0.001271/0.7449, allocations: 0.8416 MB / 0.8901 GB, free: 7.977 MB / 0.6544 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0003174/0.7452, allocations: 195.2 kB / 0.8902 GB, free: 7.77 MB / 0.6544 GB Notification: Performance of pre-optimization done (n=26): time 1.834e-06/0.7452, allocations: 0 / 0.8902 GB, free: 7.77 MB / 0.6544 GB Notification: Performance of matching and sorting (n=26): time 0.0009772/0.7462, allocations: 435 kB / 0.8907 GB, free: 7.34 MB / 0.6544 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.596e-05/0.7463, allocations: 85.11 kB / 0.8907 GB, free: 7.238 MB / 0.6544 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0007904/0.7471, allocations: 0.6486 MB / 0.8914 GB, free: 6.578 MB / 0.6544 GB Notification: Performance of collectPreVariables (initialization): time 3.106e-05/0.7471, allocations: 33.7 kB / 0.8914 GB, free: 6.539 MB / 0.6544 GB Notification: Performance of collectInitialEqns (initialization): time 0.000219/0.7473, allocations: 323.7 kB / 0.8917 GB, free: 6.219 MB / 0.6544 GB Notification: Performance of collectInitialBindings (initialization): time 7.699e-05/0.7474, allocations: 86.75 kB / 0.8918 GB, free: 6.133 MB / 0.6544 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001338/0.7475, allocations: 81.59 kB / 0.8919 GB, free: 6.047 MB / 0.6544 GB Notification: Performance of setup shared object (initialization): time 0.0001426/0.7477, allocations: 374.8 kB / 0.8922 GB, free: 5.672 MB / 0.6544 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003369/0.748, allocations: 128.8 kB / 0.8924 GB, free: 5.543 MB / 0.6544 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004162/0.7485, allocations: 285.8 kB / 0.8926 GB, free: 5.203 MB / 0.6544 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0005792/0.749, allocations: 384.6 kB / 0.893 GB, free: 4.773 MB / 0.6544 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.619e-06/0.7491, allocations: 7.938 kB / 0.893 GB, free: 4.766 MB / 0.6544 GB Notification: Performance of matching and sorting (n=43) (initialization): time 0.0009166/0.75, allocations: 477.7 kB / 0.8935 GB, free: 4.293 MB / 0.6544 GB Notification: Performance of prepare postOptimizeDAE: time 1.849e-05/0.75, allocations: 4 kB / 0.8935 GB, free: 4.289 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.041e-05/0.75, allocations: 8 kB / 0.8935 GB, free: 4.281 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.672e-05/0.7501, allocations: 4 kB / 0.8935 GB, free: 4.277 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004044/0.7505, allocations: 91.86 kB / 0.8936 GB, free: 4.191 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.791e-05/0.7505, allocations: 15.92 kB / 0.8936 GB, free: 4.176 MB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0006522/0.7511, allocations: 87.48 kB / 0.8937 GB, free: 4.09 MB / 0.6544 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.049e-05/0.7512, allocations: 12 kB / 0.8937 GB, free: 4.078 MB / 0.6544 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0005247/0.7517, allocations: 296 kB / 0.894 GB, free: 3.785 MB / 0.6544 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0004107/0.7521, allocations: 282.4 kB / 0.8942 GB, free: 3.449 MB / 0.6544 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0005564/0.7527, allocations: 385.2 kB / 0.8946 GB, free: 3.02 MB / 0.6544 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.973e-06/0.7527, allocations: 0 / 0.8946 GB, free: 3.02 MB / 0.6544 GB Notification: Performance of matching and sorting (n=43) (initialization_lambda0): time 0.0009022/0.7536, allocations: 471.8 kB / 0.895 GB, free: 2.555 MB / 0.6544 GB Notification: Performance of prepare postOptimizeDAE: time 1.212e-05/0.7537, allocations: 8 kB / 0.895 GB, free: 2.547 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.98e-06/0.7537, allocations: 4.406 kB / 0.8951 GB, free: 2.543 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (initialization): time 8.306e-06/0.7537, allocations: 12 kB / 0.8951 GB, free: 2.531 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003687/0.7541, allocations: 87.83 kB / 0.8951 GB, free: 2.445 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 8.406e-06/0.7541, allocations: 4 kB / 0.8951 GB, free: 2.441 MB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005704/0.7546, allocations: 79.62 kB / 0.8952 GB, free: 2.363 MB / 0.6544 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.457e-05/0.7547, allocations: 16 kB / 0.8952 GB, free: 2.348 MB / 0.6544 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 0.0001574/0.7549, allocations: 212.2 kB / 0.8954 GB, free: 2.133 MB / 0.6544 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 8.585e-05/0.7549, allocations: 63.23 kB / 0.8955 GB, free: 2.07 MB / 0.6544 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0006021/0.7556, allocations: 324.9 kB / 0.8958 GB, free: 1.742 MB / 0.6544 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.19e-06/0.7556, allocations: 4 kB / 0.8958 GB, free: 1.738 MB / 0.6544 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.5e-06/0.7556, allocations: 0 / 0.8958 GB, free: 1.738 MB / 0.6544 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.278e-06/0.7556, allocations: 0 / 0.8958 GB, free: 1.738 MB / 0.6544 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001379/0.757, allocations: 1.091 MB / 0.8969 GB, free: 0.5586 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.939e-06/0.757, allocations: 4.312 kB / 0.8969 GB, free: 0.5547 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001753/0.7572, allocations: 39.92 kB / 0.8969 GB, free: 0.5156 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (simulation): time 5.71e-06/0.7572, allocations: 4 kB / 0.8969 GB, free: 0.5117 MB / 0.6544 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.383e-05/0.7572, allocations: 12 kB / 0.8969 GB, free: 0.5 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 5.481e-06/0.7572, allocations: 4 kB / 0.8969 GB, free: 0.4961 MB / 0.6544 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.616e-06/0.7572, allocations: 3.984 kB / 0.8969 GB, free: 0.4922 MB / 0.6544 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0005428/0.7578, allocations: 480 kB / 0.8974 GB, free: 15.98 MB / 0.67 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001624/0.7579, allocations: 152.3 kB / 0.8976 GB, free: 15.81 MB / 0.67 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.705e-05/0.758, allocations: 12 kB / 0.8976 GB, free: 15.8 MB / 0.67 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003482/0.7584, allocations: 27.97 kB / 0.8976 GB, free: 15.77 MB / 0.67 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 6.861e-05/0.7585, allocations: 39.05 kB / 0.8976 GB, free: 15.73 MB / 0.67 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.009e-05/0.7585, allocations: 8 kB / 0.8976 GB, free: 15.73 MB / 0.67 GB Notification: Performance of sorting global known variables: time 0.0005928/0.7591, allocations: 479 kB / 0.8981 GB, free: 15.26 MB / 0.67 GB Notification: Performance of sort global known variables: time 1.6e-07/0.7591, allocations: 0 / 0.8981 GB, free: 15.26 MB / 0.67 GB Notification: Performance of remove unused functions: time 0.000864/0.76, allocations: 271.5 kB / 0.8983 GB, free: 15 MB / 0.67 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 0.001225/0.7612, allocations: 0.5119 MB / 0.8988 GB, free: 14.65 MB / 0.67 GB Notification: Performance of simCode: created initialization part: time 0.001088/0.7623, allocations: 0.5103 MB / 0.8993 GB, free: 14.14 MB / 0.67 GB Notification: Performance of simCode: created event and clocks part: time 3.156e-06/0.7623, allocations: 0 / 0.8993 GB, free: 14.14 MB / 0.67 GB Notification: Performance of simCode: created simulation system equations: time 0.0002046/0.7625, allocations: 128.8 kB / 0.8995 GB, free: 14.02 MB / 0.67 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001261/0.7638, allocations: 273.6 kB / 0.8997 GB, free: 13.76 MB / 0.67 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00198/0.7658, allocations: 1.273 MB / 0.901 GB, free: 12.42 MB / 0.67 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004133/0.7662, allocations: 0.8937 MB / 0.9018 GB, free: 11.5 MB / 0.67 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001497/0.7664, allocations: 51.42 kB / 0.9019 GB, free: 11.45 MB / 0.67 GB Notification: Performance of SimCode: time 5.11e-07/0.7664, allocations: 0 / 0.9019 GB, free: 11.45 MB / 0.67 GB Notification: Performance of Templates: time 0.01401/0.7804, allocations: 9.781 MB / 0.9114 GB, free: 1.773 MB / 0.67 GB make -j1 -f BuildingSystems_BuildingSystems.Fluid.Humidifiers.Validation.SteamHumidifier_X.makefile (rm -f BuildingSystems_BuildingSystems.Fluid.Humidifiers.Validation.SteamHumidifier_X.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.Humidifiers.Validation.SteamHumidifier_X.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.Humidifiers.Validation.SteamHumidifier_X.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.Humidifiers.Validation.SteamHumidifier_X.sim & ./BuildingSystems_BuildingSystems.Fluid.Humidifiers.Validation.SteamHumidifier_X -abortSlowSimulation -alarm=480 -lv LOG_STATS > BuildingSystems_BuildingSystems.Fluid.Humidifiers.Validation.SteamHumidifier_X.pipe 2>&1)