Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear.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 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo", uses=false) Using package Buildings with version 7.0.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/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 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(Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear") translateModel(Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.009156/0.009156, allocations: 104.8 kB / 15.74 MB, free: 6.496 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001847/0.001847, allocations: 197.2 kB / 16.68 MB, free: 6.371 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.554/1.554, allocations: 205.1 MB / 222.5 MB, free: 4.543 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo): time 1.538/1.538, allocations: 251.7 MB / 0.5094 GB, free: 3.117 MB / 414.1 MB Notification: Modelica requested package Complex of version 3.2.3. Complex 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Modelica requested package ModelicaServices of version 3.2.3. ModelicaServices 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.001647/0.001647, allocations: 77.77 kB / 0.7258 GB, free: 9.051 MB / 0.545 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2326/0.2343, allocations: 104.7 MB / 0.828 GB, free: 248 kB / 0.6387 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear): time 0.06327/0.2976, allocations: 57.94 MB / 0.8846 GB, free: 6.094 MB / 0.7012 GB Notification: Performance of NFInst.instExpressions: time 0.03337/0.331, allocations: 20.62 MB / 0.9048 GB, free: 1.426 MB / 0.7169 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003874/0.3349, allocations: 87.44 kB / 0.9048 GB, free: 1.34 MB / 0.7169 GB Notification: Performance of NFTyping.typeComponents: time 0.003715/0.3387, allocations: 1.173 MB / 0.906 GB, free: 164 kB / 0.7169 GB Notification: Performance of NFTyping.typeBindings: time 0.4672/0.806, allocations: 2.761 MB / 0.9087 GB, free: 4.883 MB / 0.7169 GB Notification: Performance of NFTyping.typeClassSections: time 0.005981/0.812, allocations: 2.242 MB / 0.9109 GB, free: 4.867 MB / 0.7169 GB Notification: Performance of NFFlatten.flatten: time 0.007806/0.8198, allocations: 4.734 MB / 0.9155 GB, free: 4.859 MB / 0.7169 GB Notification: Performance of NFFlatten.resolveConnections: time 0.003114/0.823, allocations: 1.745 MB / 0.9172 GB, free: 4.664 MB / 0.7169 GB Notification: Performance of NFEvalConstants.evaluate: time 0.005357/0.8283, allocations: 1.949 MB / 0.9191 GB, free: 4.637 MB / 0.7169 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002927/0.8313, allocations: 1.416 MB / 0.9205 GB, free: 4.379 MB / 0.7169 GB Notification: Performance of NFPackage.collectConstants: time 0.000545/0.8318, allocations: 185.2 kB / 0.9207 GB, free: 4.379 MB / 0.7169 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004502/0.8363, allocations: 1.956 MB / 0.9226 GB, free: 4.375 MB / 0.7169 GB Notification: Performance of NFScalarize.scalarize: time 0.0008383/0.8372, allocations: 0.6021 MB / 0.9232 GB, free: 4.297 MB / 0.7169 GB Notification: Performance of NFVerifyModel.verify: time 0.001548/0.8388, allocations: 1.066 MB / 0.9242 GB, free: 3.984 MB / 0.7169 GB Notification: Performance of NFConvertDAE.convert: time 0.00624/0.845, allocations: 3.622 MB / 0.9277 GB, free: 3.52 MB / 0.7169 GB Notification: Performance of FrontEnd - DAE generated: time 5.139e-06/0.845, allocations: 5.125 kB / 0.9277 GB, free: 3.516 MB / 0.7169 GB Notification: Performance of FrontEnd: time 2.204e-06/0.8451, allocations: 0 / 0.9277 GB, free: 3.516 MB / 0.7169 GB Notification: Performance of Transformations before backend: time 4.748e-05/0.8451, allocations: 3.469 kB / 0.9277 GB, free: 3.516 MB / 0.7169 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 262 * Number of variables: 262 Notification: Performance of Generate backend data structure: time 0.004645/0.8498, allocations: 2.48 MB / 0.9302 GB, free: 2.258 MB / 0.7169 GB Notification: Performance of prepare preOptimizeDAE: time 3.601e-05/0.8498, allocations: 13.5 kB / 0.9302 GB, free: 2.254 MB / 0.7169 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.003209/0.853, allocations: 0.5663 MB / 0.9307 GB, free: 2.121 MB / 0.7169 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004587/0.8576, allocations: 1.889 MB / 0.9326 GB, free: 1.613 MB / 0.7169 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 7.964e-05/0.8577, allocations: 90.88 kB / 0.9327 GB, free: 1.605 MB / 0.7169 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002016/0.8579, allocations: 116.2 kB / 0.9328 GB, free: 1.602 MB / 0.7169 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002556/0.8605, allocations: 1.275 MB / 0.934 GB, free: 1.41 MB / 0.7169 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.401e-05/0.8605, allocations: 5.656 kB / 0.934 GB, free: 1.406 MB / 0.7169 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.000115/0.8607, allocations: 40.78 kB / 0.9341 GB, free: 1.406 MB / 0.7169 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.146e-05/0.8607, allocations: 29.56 kB / 0.9341 GB, free: 1.402 MB / 0.7169 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002381/0.8631, allocations: 0.9676 MB / 0.935 GB, free: 1.391 MB / 0.7169 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 0.00801/0.8711, allocations: 5.974 MB / 0.9409 GB, free: 14.25 MB / 0.7325 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002064/0.8732, allocations: 0.719 MB / 0.9416 GB, free: 14.21 MB / 0.7325 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0008674/0.8741, allocations: 369 kB / 0.9419 GB, free: 14.2 MB / 0.7325 GB Notification: Performance of preOpt evalFunc (simulation): time 0.003358/0.8774, allocations: 2.438 MB / 0.9443 GB, free: 12.55 MB / 0.7325 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.051e-05/0.8775, allocations: 40.34 kB / 0.9443 GB, free: 12.52 MB / 0.7325 GB Notification: Performance of pre-optimization done (n=56): time 3.576e-06/0.8775, allocations: 0 / 0.9443 GB, free: 12.52 MB / 0.7325 GB Notification: Performance of matching and sorting (n=56): time 0.003735/0.8812, allocations: 1.245 MB / 0.9456 GB, free: 12.27 MB / 0.7325 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.341e-05/0.8813, allocations: 57.81 kB / 0.9456 GB, free: 12.2 MB / 0.7325 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002146/0.8834, allocations: 1.58 MB / 0.9472 GB, free: 11.98 MB / 0.7325 GB Notification: Performance of collectPreVariables (initialization): time 0.0001002/0.8836, allocations: 43.59 kB / 0.9472 GB, free: 11.95 MB / 0.7325 GB Notification: Performance of collectInitialEqns (initialization): time 0.0005756/0.8841, allocations: 0.8145 MB / 0.948 GB, free: 11.68 MB / 0.7325 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001741/0.8843, allocations: 190.8 kB / 0.9482 GB, free: 11.56 MB / 0.7325 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000338/0.8847, allocations: 215.5 kB / 0.9484 GB, free: 11.54 MB / 0.7325 GB Notification: Performance of setup shared object (initialization): time 0.000132/0.8848, allocations: 336.5 kB / 0.9487 GB, free: 11.23 MB / 0.7325 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001026/0.8858, allocations: 428 kB / 0.9491 GB, free: 11.09 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001289/0.8871, allocations: 0.7285 MB / 0.9498 GB, free: 10.59 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.002129/0.8893, allocations: 1.093 MB / 0.9509 GB, free: 9.973 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 8.636e-06/0.8893, allocations: 2.25 kB / 0.9509 GB, free: 9.973 MB / 0.7325 GB Notification: Performance of matching and sorting (n=102) (initialization): time 0.003166/0.8925, allocations: 1.341 MB / 0.9522 GB, free: 9.508 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 2.036e-05/0.8925, allocations: 12.72 kB / 0.9522 GB, free: 9.508 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.238e-05/0.8925, allocations: 8.688 kB / 0.9522 GB, free: 9.508 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0003851/0.8929, allocations: 106.8 kB / 0.9523 GB, free: 9.477 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008574/0.8938, allocations: 212.2 kB / 0.9525 GB, free: 9.469 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0005163/0.8943, allocations: 0.6162 MB / 0.9531 GB, free: 8.914 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00134/0.8957, allocations: 124.9 kB / 0.9532 GB, free: 8.852 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001129/0.8958, allocations: 60.5 kB / 0.9533 GB, free: 8.844 MB / 0.7325 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001455/0.8972, allocations: 0.6831 MB / 0.954 GB, free: 8.523 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001044/0.8983, allocations: 0.6625 MB / 0.9546 GB, free: 8.035 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.00167/0.9, allocations: 0.9599 MB / 0.9556 GB, free: 7.465 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 4.879e-06/0.9, allocations: 2.938 kB / 0.9556 GB, free: 7.465 MB / 0.7325 GB Notification: Performance of matching and sorting (n=102) (initialization_lambda0): time 0.002604/0.9026, allocations: 1.222 MB / 0.9568 GB, free: 7.047 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 1.357e-05/0.9026, allocations: 10.77 kB / 0.9568 GB, free: 7.047 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.207e-06/0.9026, allocations: 11 kB / 0.9568 GB, free: 7.047 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004883/0.9031, allocations: 130.1 kB / 0.9569 GB, free: 7.012 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0007178/0.9039, allocations: 199.8 kB / 0.9571 GB, free: 7.004 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003974/0.9079, allocations: 2.88 MB / 0.9599 GB, free: 4.754 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001199/0.9091, allocations: 100.3 kB / 0.96 GB, free: 4.707 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 9.462e-05/0.9092, allocations: 56.61 kB / 0.96 GB, free: 4.699 MB / 0.7325 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 37 * 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 initialization (96): * Single equations (assignments): 93 * Array equations: 2 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * 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): 1 system {(1,4)} Notification: Performance of prepare postOptimizeDAE: time 0.000348/0.9095, allocations: 238.1 kB / 0.9603 GB, free: 4.492 MB / 0.7325 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002392/0.9098, allocations: 165.8 kB / 0.9604 GB, free: 4.402 MB / 0.7325 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002765/0.9125, allocations: 1.215 MB / 0.9616 GB, free: 3.973 MB / 0.7325 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.566e-05/0.9126, allocations: 11.19 kB / 0.9616 GB, free: 3.973 MB / 0.7325 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.134e-06/0.9126, allocations: 0 / 0.9616 GB, free: 3.973 MB / 0.7325 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 7.935e-06/0.9126, allocations: 2.531 kB / 0.9616 GB, free: 3.973 MB / 0.7325 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.004271/0.9169, allocations: 2.434 MB / 0.964 GB, free: 2.551 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.5e-06/0.9169, allocations: 2.844 kB / 0.964 GB, free: 2.551 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006192/0.9175, allocations: 135.5 kB / 0.9641 GB, free: 2.516 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0002186/0.9177, allocations: 71.45 kB / 0.9642 GB, free: 2.484 MB / 0.7325 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.067e-05/0.9178, allocations: 24.47 kB / 0.9642 GB, free: 2.469 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0004078/0.9182, allocations: 0.5998 MB / 0.9648 GB, free: 1.902 MB / 0.7325 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.958e-06/0.9182, allocations: 2.125 kB / 0.9648 GB, free: 1.902 MB / 0.7325 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002218/0.9205, allocations: 1.176 MB / 0.966 GB, free: 1.203 MB / 0.7325 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0005349/0.921, allocations: 340.3 kB / 0.9663 GB, free: 0.918 MB / 0.7325 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000181/0.9212, allocations: 14.59 kB / 0.9663 GB, free: 0.9062 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0007499/0.9219, allocations: 49.3 kB / 0.9664 GB, free: 0.8828 MB / 0.7325 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001007/0.9221, allocations: 50.94 kB / 0.9664 GB, free: 0.8555 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.14e-05/0.9221, allocations: 41.59 kB / 0.9664 GB, free: 0.8359 MB / 0.7325 GB Notification: Performance of sorting global known variables: time 0.001465/0.9236, allocations: 1.076 MB / 0.9675 GB, free: 228 kB / 0.7325 GB Notification: Performance of sort global known variables: time 1.8e-07/0.9236, allocations: 0 / 0.9675 GB, free: 228 kB / 0.7325 GB Notification: Performance of remove unused functions: time 0.002668/0.9263, allocations: 0.9105 MB / 0.9684 GB, free: 8 kB / 0.7325 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 9 * 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 (67): * Single equations (assignments): 58 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 8 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * 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): 1 system {(1,5)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001412/0.9277, allocations: 0.5891 MB / 0.969 GB, free: 15.74 MB / 0.7481 GB Notification: Performance of simCode: created initialization part: time 0.003615/0.9313, allocations: 1.632 MB / 0.9706 GB, free: 15 MB / 0.7481 GB Notification: Performance of simCode: created event and clocks part: time 4.589e-06/0.9314, allocations: 320 / 0.9706 GB, free: 15 MB / 0.7481 GB Notification: Performance of simCode: created simulation system equations: time 0.0009841/0.9323, allocations: 447.9 kB / 0.971 GB, free: 14.82 MB / 0.7481 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003435/0.9358, allocations: 0.8357 MB / 0.9718 GB, free: 14.38 MB / 0.7481 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004459/0.9403, allocations: 2.784 MB / 0.9745 GB, free: 12.74 MB / 0.7481 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0009343/0.9412, allocations: 1.379 MB / 0.9759 GB, free: 11.72 MB / 0.7481 GB Notification: Performance of simCode: alias equations: time 0.001654/0.9429, allocations: 458.8 kB / 0.9763 GB, free: 11.49 MB / 0.7481 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003224/0.9432, allocations: 142.9 kB / 0.9764 GB, free: 11.46 MB / 0.7481 GB Notification: Performance of SimCode: time 7.11e-07/0.9432, allocations: 0 / 0.9764 GB, free: 11.46 MB / 0.7481 GB Notification: Performance of Templates: time 0.0601/1.003, allocations: 37.46 MB / 1.013 GB, free: 7.625 MB / 0.7794 GB make -j1 -f Buildings_maint.7.0.x_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear.makefile (rm -f Buildings_maint.7.0.x_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear.pipe >> ../files/Buildings_maint.7.0.x_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear.sim & ./Buildings_maint.7.0.x_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.7.0.x_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear.pipe 2>&1)