Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ThermoSysPro_ThermoSysPro.Fluid.Examples.SimpleExamples.TestAirHumidity.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/package.mo", uses=false) Using package ThermoSysPro with version 4.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/package.mo) Running command: translateModel(ThermoSysPro.Fluid.Examples.SimpleExamples.TestAirHumidity,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ThermoSysPro_ThermoSysPro.Fluid.Examples.SimpleExamples.TestAirHumidity") translateModel(ThermoSysPro.Fluid.Examples.SimpleExamples.TestAirHumidity,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ThermoSysPro_ThermoSysPro.Fluid.Examples.SimpleExamples.TestAirHumidity") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/package.mo): time 0.9559/0.9559, allocations: 150.9 MB / 166.5 MB, free: 14.39 MB / 142.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0003385/0.0003385, allocations: 16.06 kB / 237.1 MB, free: 1.777 MB / 190.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.06412/0.06447, allocations: 31.35 MB / 268.4 MB, free: 7.039 MB / 222.1 MB Notification: Automatically loaded package Complex 4.0.0 due to uses annotation from Modelica. Notification: Automatically loaded package ModelicaServices 4.0.0 due to uses annotation from Modelica. Notification: Automatically loaded package Modelica 4.0.0 due to usage. Notification: Performance of NFInst.instantiate(ThermoSysPro.Fluid.Examples.SimpleExamples.TestAirHumidity): time 1.832/1.896, allocations: 295.4 MB / 0.5507 GB, free: 12.51 MB / 446.1 MB Notification: Performance of NFInst.instExpressions: time 0.6716/2.568, allocations: 188.8 MB / 0.735 GB, free: 1.723 MB / 0.5919 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0005893/2.569, allocations: 9.156 kB / 0.7351 GB, free: 1.723 MB / 0.5919 GB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/Fluid/BoundaryConditions/AirHumidity.mo:39:3-40:54:writable] Warning: Connector C1 is not balanced: The number of potential variables (9) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/Fluid/BoundaryConditions/AirHumidity.mo:47:3-48:52:writable] Warning: Connector C2 is not balanced: The number of potential variables (9) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/Fluid/PressureLosses/SingularPressureLoss.mo:27:3-28:67:writable] Warning: Connector C1 is not balanced: The number of potential variables (9) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/Fluid/PressureLosses/SingularPressureLoss.mo:29:3-30:65:writable] Warning: Connector C2 is not balanced: The number of potential variables (9) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/Fluid/BoundaryConditions/Sink.mo:39:3-40:67:writable] Warning: Connector C is not balanced: The number of potential variables (9) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/Fluid/BoundaryConditions/SourcePQ.mo:74:3-75:65:writable] Warning: Connector C is not balanced: The number of potential variables (9) is not equal to the number of flow variables (0). Notification: Performance of NFTyping.typeComponents: time 0.0006749/2.569, allocations: 146 kB / 0.7352 GB, free: 1.723 MB / 0.5919 GB Notification: Performance of NFTyping.typeBindings: time 0.000761/2.57, allocations: 173.1 kB / 0.7354 GB, free: 1.723 MB / 0.5919 GB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/Properties/WaterSteam/IF97_packages.mo:783:9-783:27:writable] Warning: cv was used before it was defined (given a value). Additional such uses may exist for the variable, but some messages were suppressed. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/Properties/WaterSteam/IF97_packages.mo:850:9-850:27:writable] Warning: cv was used before it was defined (given a value). Additional such uses may exist for the variable, but some messages were suppressed. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/Properties/WaterSteam/IF97_packages.mo:1088:9-1088:27:writable] Warning: cv was used before it was defined (given a value). Additional such uses may exist for the variable, but some messages were suppressed. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/Properties/WaterSteamSimple/prop4_Ph.mo:69:3-69:60:writable] Warning: dh1satp was used before it was defined (given a value). Additional such uses may exist for the variable, but some messages were suppressed. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/Properties/WaterSteamSimple/prop4_Ph.mo:69:3-69:60:writable] Warning: dh2satp was used before it was defined (given a value). Additional such uses may exist for the variable, but some messages were suppressed. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/Properties/WaterSteamSimple/prop4_Ph_der.mo:167:3-170:49:writable] Warning: du1satp_der was used before it was defined (given a value). Additional such uses may exist for the variable, but some messages were suppressed. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/Properties/WaterSteamSimple/prop4_Ph_der.mo:167:3-170:49:writable] Warning: du2satp_der was used before it was defined (given a value). Additional such uses may exist for the variable, but some messages were suppressed. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/Properties/Fluid/derDensity_derP_derh.mo:63:5-63:84:writable] Warning: T 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 0.04096/2.611, allocations: 12.14 MB / 0.7472 GB, free: 1.473 MB / 0.5919 GB Notification: Performance of NFFlatten.flatten: time 0.0009439/2.612, allocations: 0.5734 MB / 0.7478 GB, free: 1.473 MB / 0.5919 GB Notification: Performance of NFFlatten.resolveConnections: time 0.000408/2.613, allocations: 307.1 kB / 0.7481 GB, free: 1.449 MB / 0.5919 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0003072/2.613, allocations: 246.3 kB / 0.7483 GB, free: 1.449 MB / 0.5919 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0002685/2.613, allocations: 251.4 kB / 0.7485 GB, free: 1.449 MB / 0.5919 GB Notification: Performance of NFPackage.collectConstants: time 5.807e-05/2.613, allocations: 47.47 kB / 0.7486 GB, free: 1.449 MB / 0.5919 GB Notification: Performance of NFFlatten.collectFunctions: time 0.04691/2.66, allocations: 21.86 MB / 0.7699 GB, free: 24 kB / 0.5919 GB Notification: Performance of NFScalarize.scalarize: time 0.000269/2.66, allocations: 108.1 kB / 0.77 GB, free: 8 kB / 0.5919 GB Notification: Performance of NFVerifyModel.verify: time 0.0005322/2.661, allocations: 276 kB / 0.7703 GB, free: 0 / 0.5919 GB Notification: Performance of NFConvertDAE.convert: time 0.03429/2.695, allocations: 10.46 MB / 0.7805 GB, free: 12.15 MB / 0.6075 GB Notification: Performance of FrontEnd - DAE generated: time 7.685e-06/2.695, allocations: 0.8125 kB / 0.7805 GB, free: 12.15 MB / 0.6075 GB Notification: Performance of FrontEnd: time 2.294e-06/2.695, allocations: 0 / 0.7805 GB, free: 12.15 MB / 0.6075 GB Notification: Performance of Transformations before backend: time 1.352e-05/2.695, allocations: 0 / 0.7805 GB, free: 12.15 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: 142 * Number of variables: 142 Notification: Performance of Generate backend data structure: time 0.007069/2.703, allocations: 1.936 MB / 0.7824 GB, free: 10.93 MB / 0.6075 GB Notification: Performance of prepare preOptimizeDAE: time 4.822e-05/2.703, allocations: 11.42 kB / 0.7824 GB, free: 10.93 MB / 0.6075 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001418/2.703, allocations: 61.59 kB / 0.7825 GB, free: 10.9 MB / 0.6075 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0004839/2.703, allocations: 334.8 kB / 0.7828 GB, free: 10.63 MB / 0.6075 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.984e-05/2.703, allocations: 43.88 kB / 0.7828 GB, free: 10.63 MB / 0.6075 GB Notification: Performance of preOpt expandDerOperator (simulation): time 6.104e-05/2.703, allocations: 50.69 kB / 0.7829 GB, free: 10.63 MB / 0.6075 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0008811/2.704, allocations: 0.5503 MB / 0.7834 GB, free: 10.43 MB / 0.6075 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.685e-05/2.704, allocations: 1.156 kB / 0.7834 GB, free: 10.43 MB / 0.6075 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.43e-05/2.704, allocations: 22.5 kB / 0.7834 GB, free: 10.43 MB / 0.6075 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.094e-05/2.704, allocations: 14.06 kB / 0.7835 GB, free: 10.43 MB / 0.6075 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0006718/2.705, allocations: 365.6 kB / 0.7838 GB, free: 10.39 MB / 0.6075 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002971/2.708, allocations: 2.918 MB / 0.7867 GB, free: 7.91 MB / 0.6075 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0003172/2.708, allocations: 154.5 kB / 0.7868 GB, free: 7.871 MB / 0.6075 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0001554/2.708, allocations: 86.5 kB / 0.7869 GB, free: 7.859 MB / 0.6075 GB Notification: Performance of preOpt evalFunc (simulation): time 0.3692/3.078, allocations: 183.2 MB / 0.9658 GB, free: 15.26 MB / 0.8106 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.529e-05/3.078, allocations: 30.56 kB / 0.9658 GB, free: 15.22 MB / 0.8106 GB Notification: Performance of pre-optimization done (n=26): time 2.585e-06/3.078, allocations: 0 / 0.9658 GB, free: 15.22 MB / 0.8106 GB Notification: Performance of matching and sorting (n=26): time 0.002029/3.08, allocations: 0.6427 MB / 0.9664 GB, free: 14.54 MB / 0.8106 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.05e-05/3.08, allocations: 58.59 kB / 0.9665 GB, free: 14.47 MB / 0.8106 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0004966/3.08, allocations: 333.5 kB / 0.9668 GB, free: 14.13 MB / 0.8106 GB Notification: Performance of collectPreVariables (initialization): time 2.892e-05/3.08, allocations: 25.7 kB / 0.9668 GB, free: 14.1 MB / 0.8106 GB Notification: Performance of collectInitialEqns (initialization): time 0.000205/3.081, allocations: 272.5 kB / 0.9671 GB, free: 13.84 MB / 0.8106 GB Notification: Performance of collectInitialBindings (initialization): time 8.867e-05/3.081, allocations: 94.59 kB / 0.9672 GB, free: 13.74 MB / 0.8106 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000129/3.081, allocations: 73.69 kB / 0.9673 GB, free: 13.66 MB / 0.8106 GB Notification: Performance of setup shared object (initialization): time 0.0001313/3.081, allocations: 346.8 kB / 0.9676 GB, free: 13.32 MB / 0.8106 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001992/3.081, allocations: 88.08 kB / 0.9677 GB, free: 13.23 MB / 0.8106 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002656/3.082, allocations: 201 kB / 0.9679 GB, free: 12.98 MB / 0.8106 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0004777/3.082, allocations: 324.1 kB / 0.9682 GB, free: 12.63 MB / 0.8106 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.061e-06/3.082, allocations: 0 / 0.9682 GB, free: 12.63 MB / 0.8106 GB Notification: Performance of matching and sorting (n=46) (initialization): time 0.0009958/3.083, allocations: 453.8 kB / 0.9686 GB, free: 12.2 MB / 0.8106 GB Notification: Performance of prepare postOptimizeDAE: time 2.421e-05/3.083, allocations: 8 kB / 0.9686 GB, free: 12.2 MB / 0.8106 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.245e-05/3.083, allocations: 8.031 kB / 0.9686 GB, free: 12.19 MB / 0.8106 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001032/3.084, allocations: 251.9 kB / 0.9689 GB, free: 11.94 MB / 0.8106 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001596/3.084, allocations: 43.08 kB / 0.9689 GB, free: 11.9 MB / 0.8106 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001105/3.085, allocations: 1.258 MB / 0.9701 GB, free: 10.61 MB / 0.8106 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003068/3.086, allocations: 43.61 kB / 0.9702 GB, free: 10.56 MB / 0.8106 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.239e-05/3.086, allocations: 29.08 kB / 0.9702 GB, free: 10.54 MB / 0.8106 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 18 * Number of states: 0 () * Number of discrete variables: 7 (sourceFlueGasesPQ.fluid1,sourceFlueGasesPQ.C.ftype,airHumidity.fluid,singularPressureLoss.fluid,sinkFlueGases.fluid,singularPressureLoss.C2.diff_on_1,airHumidity.C1.diff_on_2) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (26): * Single equations (assignments): 24 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * 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): 2 systems {(1,3), (4,5)} Notification: Performance of prepare postOptimizeDAE: time 0.0002309/3.086, allocations: 164.4 kB / 0.9704 GB, free: 10.37 MB / 0.8106 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 8.026e-05/3.086, allocations: 31.62 kB / 0.9704 GB, free: 10.34 MB / 0.8106 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0009808/3.087, allocations: 0.4949 MB / 0.9709 GB, free: 9.848 MB / 0.8106 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 0.0006408/3.088, allocations: 352.9 kB / 0.9712 GB, free: 9.496 MB / 0.8106 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.412e-06/3.088, allocations: 0 / 0.9712 GB, free: 9.496 MB / 0.8106 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 8.136e-06/3.088, allocations: 9.672 kB / 0.9712 GB, free: 9.488 MB / 0.8106 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001676/3.089, allocations: 1.006 MB / 0.9722 GB, free: 8.434 MB / 0.8106 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.577e-06/3.089, allocations: 0 / 0.9722 GB, free: 8.434 MB / 0.8106 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 7.64e-05/3.09, allocations: 32.48 kB / 0.9722 GB, free: 8.406 MB / 0.8106 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0007441/3.09, allocations: 224.2 kB / 0.9724 GB, free: 8.184 MB / 0.8106 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.054e-05/3.09, allocations: 4 kB / 0.9724 GB, free: 8.18 MB / 0.8106 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001015/3.091, allocations: 1.268 MB / 0.9737 GB, free: 6.871 MB / 0.8106 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.006e-06/3.091, allocations: 0 / 0.9737 GB, free: 6.871 MB / 0.8106 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0007801/3.092, allocations: 0.4928 MB / 0.9742 GB, free: 6.359 MB / 0.8106 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001295/3.092, allocations: 112.7 kB / 0.9743 GB, free: 6.23 MB / 0.8106 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 5.779e-05/3.092, allocations: 11.88 kB / 0.9743 GB, free: 6.219 MB / 0.8106 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0001542/3.093, allocations: 9.203 kB / 0.9743 GB, free: 6.211 MB / 0.8106 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.958e-05/3.093, allocations: 19.97 kB / 0.9743 GB, free: 6.191 MB / 0.8106 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.514e-05/3.093, allocations: 8 kB / 0.9743 GB, free: 6.184 MB / 0.8106 GB Notification: Performance of sorting global known variables: time 0.0002786/3.093, allocations: 227.1 kB / 0.9745 GB, free: 5.961 MB / 0.8106 GB Notification: Performance of sort global known variables: time 5.61e-07/3.093, allocations: 0 / 0.9745 GB, free: 5.961 MB / 0.8106 GB Notification: Performance of remove unused functions: time 0.005842/3.099, allocations: 1.507 MB / 0.976 GB, free: 4.453 MB / 0.8106 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 2 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (16): * Single equations (assignments): 14 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * 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): 2 systems {(1,3), (4,5)} Notification: Performance of Backend phase and start with SimCode phase: time 0.009905/3.109, allocations: 2.247 MB / 0.9782 GB, free: 2.469 MB / 0.8106 GB Notification: Performance of simCode: created initialization part: time 0.001228/3.11, allocations: 355.5 kB / 0.9785 GB, free: 2.129 MB / 0.8106 GB Notification: Performance of simCode: created event and clocks part: time 4.759e-06/3.11, allocations: 0 / 0.9785 GB, free: 2.129 MB / 0.8106 GB Notification: Performance of simCode: created simulation system equations: time 0.0005603/3.111, allocations: 190.2 kB / 0.9787 GB, free: 1.953 MB / 0.8106 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0008759/3.111, allocations: 153.5 kB / 0.9789 GB, free: 1.82 MB / 0.8106 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00152/3.113, allocations: 0.7345 MB / 0.9796 GB, free: 1.066 MB / 0.8106 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004061/3.113, allocations: 0.8352 MB / 0.9804 GB, free: 208 kB / 0.8106 GB Notification: Performance of simCode: alias equations: time 0.0002115/3.114, allocations: 52.27 kB / 0.9804 GB, free: 160 kB / 0.8106 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 6.516e-05/3.114, allocations: 28.64 kB / 0.9805 GB, free: 132 kB / 0.8106 GB Notification: Performance of SimCode: time 3.1e-07/3.114, allocations: 0 / 0.9805 GB, free: 132 kB / 0.8106 GB Notification: Performance of Templates: time 0.3275/3.441, allocations: 49.44 MB / 1.029 GB, free: 459.8 MB / 0.8419 GB make -j1 -f ThermoSysPro_ThermoSysPro.Fluid.Examples.SimpleExamples.TestAirHumidity.makefile (rm -f ThermoSysPro_ThermoSysPro.Fluid.Examples.SimpleExamples.TestAirHumidity.pipe ; mkfifo ThermoSysPro_ThermoSysPro.Fluid.Examples.SimpleExamples.TestAirHumidity.pipe ; head -c 1048576 < ThermoSysPro_ThermoSysPro.Fluid.Examples.SimpleExamples.TestAirHumidity.pipe >> ../files/ThermoSysPro_ThermoSysPro.Fluid.Examples.SimpleExamples.TestAirHumidity.sim & ./ThermoSysPro_ThermoSysPro.Fluid.Examples.SimpleExamples.TestAirHumidity -abortSlowSimulation -alarm=480 -lv LOG_STATS > ThermoSysPro_ThermoSysPro.Fluid.Examples.SimpleExamples.TestAirHumidity.pipe 2>&1)