Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow.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/package.mo", uses=false) Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/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(IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow") translateModel(IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.007295/0.007295, allocations: 100.2 kB / 15.73 MB, free: 6.004 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001574/0.001574, allocations: 192.9 kB / 16.67 MB, free: 5.926 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.353/1.353, allocations: 222.9 MB / 240.4 MB, free: 15.15 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo): time 0.8138/0.8138, allocations: 132.2 MB / 422.7 MB, free: 6.59 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001245/0.001245, allocations: 67.23 kB / 0.5813 GB, free: 23.78 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1466/0.1479, allocations: 80.2 MB / 0.6597 GB, free: 10.25 MB / 0.4981 GB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow): time 0.5462/0.6941, allocations: 161.6 MB / 0.8175 GB, free: 9.742 MB / 0.5919 GB Notification: Performance of NFInst.instExpressions: time 0.00295/0.6971, allocations: 1.756 MB / 0.8192 GB, free: 8.758 MB / 0.5919 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.000297/0.6974, allocations: 15.75 kB / 0.8192 GB, free: 8.75 MB / 0.5919 GB Notification: Performance of NFTyping.typeComponents: time 0.0005588/0.6979, allocations: 172.2 kB / 0.8194 GB, free: 8.641 MB / 0.5919 GB Notification: Performance of NFTyping.typeBindings: time 0.00133/0.6993, allocations: 0.5469 MB / 0.8199 GB, free: 8.312 MB / 0.5919 GB Notification: Performance of NFTyping.typeClassSections: time 0.001057/0.7004, allocations: 393.3 kB / 0.8203 GB, free: 8.07 MB / 0.5919 GB Notification: Performance of NFFlatten.flatten: time 0.002293/0.7027, allocations: 2.525 MB / 0.8228 GB, free: 6.676 MB / 0.5919 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001052/0.7038, allocations: 0.9352 MB / 0.8237 GB, free: 6.148 MB / 0.5919 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001495/0.7053, allocations: 1.044 MB / 0.8247 GB, free: 5.594 MB / 0.5919 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0008331/0.7061, allocations: 0.71 MB / 0.8254 GB, free: 5.188 MB / 0.5919 GB Notification: Performance of NFPackage.collectConstants: time 9.731e-05/0.7062, allocations: 54.78 kB / 0.8254 GB, free: 5.188 MB / 0.5919 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001403/0.7076, allocations: 0.7435 MB / 0.8262 GB, free: 4.789 MB / 0.5919 GB Notification: Performance of NFScalarize.scalarize: time 0.0003138/0.708, allocations: 300.8 kB / 0.8265 GB, free: 4.59 MB / 0.5919 GB Notification: Performance of NFVerifyModel.verify: time 0.0006802/0.7087, allocations: 0.5389 MB / 0.827 GB, free: 4.262 MB / 0.5919 GB Notification: Performance of NFConvertDAE.convert: time 0.001709/0.7104, allocations: 1.406 MB / 0.8284 GB, free: 3.43 MB / 0.5919 GB Notification: Performance of FrontEnd - DAE generated: time 6.352e-06/0.7104, allocations: 3.984 kB / 0.8284 GB, free: 3.426 MB / 0.5919 GB Notification: Performance of FrontEnd: time 1.753e-06/0.7104, allocations: 0 / 0.8284 GB, free: 3.426 MB / 0.5919 GB Notification: Performance of Transformations before backend: time 1.818e-05/0.7104, allocations: 0 / 0.8284 GB, free: 3.426 MB / 0.5919 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 126 * Number of variables: 126 Notification: Performance of Generate backend data structure: time 0.002267/0.7127, allocations: 1.451 MB / 0.8298 GB, free: 2.309 MB / 0.5919 GB Notification: Performance of prepare preOptimizeDAE: time 3.918e-05/0.7128, allocations: 10.03 kB / 0.8298 GB, free: 2.309 MB / 0.5919 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0007403/0.7135, allocations: 184.1 kB / 0.83 GB, free: 2.223 MB / 0.5919 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001237/0.7147, allocations: 0.8573 MB / 0.8308 GB, free: 1.59 MB / 0.5919 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.876e-05/0.7148, allocations: 42.91 kB / 0.8308 GB, free: 1.574 MB / 0.5919 GB Notification: Performance of preOpt expandDerOperator (simulation): time 9.724e-05/0.7149, allocations: 59.06 kB / 0.8309 GB, free: 1.559 MB / 0.5919 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001106/0.716, allocations: 0.793 MB / 0.8317 GB, free: 0.9883 MB / 0.5919 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.662e-05/0.716, allocations: 6.156 kB / 0.8317 GB, free: 0.9844 MB / 0.5919 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.919e-05/0.7161, allocations: 21.66 kB / 0.8317 GB, free: 0.9688 MB / 0.5919 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.434e-05/0.7161, allocations: 18.92 kB / 0.8317 GB, free: 0.9648 MB / 0.5919 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0008585/0.717, allocations: 0.5382 MB / 0.8322 GB, free: 0.6992 MB / 0.5919 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 0.004023/0.721, allocations: 4.586 MB / 0.8367 GB, free: 12.39 MB / 0.6075 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0007294/0.7218, allocations: 420.8 kB / 0.8371 GB, free: 12.18 MB / 0.6075 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003762/0.7221, allocations: 249.9 kB / 0.8374 GB, free: 12.06 MB / 0.6075 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002778/0.7224, allocations: 191.1 kB / 0.8375 GB, free: 11.86 MB / 0.6075 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0004939/0.7229, allocations: 287.2 kB / 0.8378 GB, free: 11.68 MB / 0.6075 GB Notification: Performance of pre-optimization done (n=31): time 1.963e-06/0.7229, allocations: 0 / 0.8378 GB, free: 11.68 MB / 0.6075 GB Notification: Performance of matching and sorting (n=31): time 0.001263/0.7242, allocations: 0.6339 MB / 0.8384 GB, free: 11.36 MB / 0.6075 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.45e-05/0.7243, allocations: 87.39 kB / 0.8385 GB, free: 11.26 MB / 0.6075 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001223/0.7255, allocations: 1.118 MB / 0.8396 GB, free: 10.66 MB / 0.6075 GB Notification: Performance of collectPreVariables (initialization): time 4.845e-05/0.7256, allocations: 35.48 kB / 0.8396 GB, free: 10.62 MB / 0.6075 GB Notification: Performance of collectInitialEqns (initialization): time 0.000392/0.726, allocations: 494.4 kB / 0.8401 GB, free: 10.21 MB / 0.6075 GB Notification: Performance of collectInitialBindings (initialization): time 9.38e-05/0.7261, allocations: 105.4 kB / 0.8402 GB, free: 10.12 MB / 0.6075 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001695/0.7262, allocations: 114.5 kB / 0.8403 GB, free: 10.05 MB / 0.6075 GB Notification: Performance of setup shared object (initialization): time 0.0001159/0.7264, allocations: 327 kB / 0.8406 GB, free: 9.73 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003735/0.7267, allocations: 222.2 kB / 0.8408 GB, free: 9.613 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005643/0.7273, allocations: 0.5203 MB / 0.8414 GB, free: 9.113 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0008022/0.7281, allocations: 0.6343 MB / 0.842 GB, free: 8.641 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.128e-06/0.7281, allocations: 2.594 kB / 0.842 GB, free: 8.641 MB / 0.6075 GB Notification: Performance of matching and sorting (n=54) (initialization): time 0.001116/0.7293, allocations: 0.7215 MB / 0.8427 GB, free: 8.25 MB / 0.6075 GB Notification: Performance of prepare postOptimizeDAE: time 3.515e-05/0.7293, allocations: 37.48 kB / 0.8427 GB, free: 8.215 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.035e-06/0.7293, allocations: 7.875 kB / 0.8427 GB, free: 8.215 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.836e-05/0.7293, allocations: 7.375 kB / 0.8427 GB, free: 8.215 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001782/0.7311, allocations: 355.9 kB / 0.8431 GB, free: 8.09 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003099/0.7342, allocations: 6.079 MB / 0.849 GB, free: 2.008 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007841/0.735, allocations: 73.69 kB / 0.8491 GB, free: 1.965 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.902e-05/0.7351, allocations: 28.55 kB / 0.8491 GB, free: 1.957 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0007706/0.7359, allocations: 0.4905 MB / 0.8496 GB, free: 1.672 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0005196/0.7364, allocations: 498.7 kB / 0.8501 GB, free: 1.188 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0006931/0.7371, allocations: 0.5517 MB / 0.8506 GB, free: 0.7578 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 5.861e-06/0.7371, allocations: 10.55 kB / 0.8506 GB, free: 0.75 MB / 0.6075 GB Notification: Performance of matching and sorting (n=54) (initialization_lambda0): time 0.0009771/0.7381, allocations: 0.6513 MB / 0.8512 GB, free: 404 kB / 0.6075 GB Notification: Performance of prepare postOptimizeDAE: time 3.045e-05/0.7382, allocations: 33.17 kB / 0.8513 GB, free: 372 kB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.402e-06/0.7382, allocations: 8.344 kB / 0.8513 GB, free: 372 kB / 0.6075 GB Notification: Performance of postOpt tearingSystem (initialization): time 8.306e-06/0.7382, allocations: 7.469 kB / 0.8513 GB, free: 372 kB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005374/0.7387, allocations: 157.3 kB / 0.8514 GB, free: 228 kB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 9.818e-06/0.7388, allocations: 8 kB / 0.8514 GB, free: 220 kB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0006207/0.7394, allocations: 64.03 kB / 0.8515 GB, free: 156 kB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.666e-05/0.7394, allocations: 24 kB / 0.8515 GB, free: 132 kB / 0.6075 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 24 * Number of states: 0 () * Number of discrete variables: 5 (pulse_p.count,$PRE.pulse_p.count,pulse_p.T_start,$PRE.pulse_p.T_start,$whenCondition1) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (53): * Single equations (assignments): 42 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 10 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 10 systems {1, 1, 1, 1, 1, 1, 1, 1, 1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0002017/0.7396, allocations: 228 kB / 0.8517 GB, free: 15.9 MB / 0.6231 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000117/0.7398, allocations: 94.78 kB / 0.8518 GB, free: 15.8 MB / 0.6231 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0009068/0.7407, allocations: 495 kB / 0.8523 GB, free: 15.31 MB / 0.6231 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.199e-06/0.7407, allocations: 8 kB / 0.8523 GB, free: 15.3 MB / 0.6231 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.348e-06/0.7407, allocations: 0 / 0.8523 GB, free: 15.3 MB / 0.6231 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.761e-06/0.7407, allocations: 3.984 kB / 0.8523 GB, free: 15.3 MB / 0.6231 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001855/0.7426, allocations: 1.383 MB / 0.8537 GB, free: 13.84 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.535e-06/0.7426, allocations: 0 / 0.8537 GB, free: 13.84 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006483/0.7432, allocations: 143.8 kB / 0.8538 GB, free: 13.7 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (simulation): time 6.593e-06/0.7433, allocations: 8 kB / 0.8538 GB, free: 13.69 MB / 0.6231 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.273e-05/0.7433, allocations: 11.94 kB / 0.8538 GB, free: 13.68 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.002606/0.7459, allocations: 6.017 MB / 0.8597 GB, free: 7.43 MB / 0.6231 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.221e-06/0.7459, allocations: 12.16 kB / 0.8597 GB, free: 7.418 MB / 0.6231 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0008308/0.7467, allocations: 0.5945 MB / 0.8603 GB, free: 6.785 MB / 0.6231 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002867/0.747, allocations: 211.9 kB / 0.8605 GB, free: 6.559 MB / 0.6231 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001196/0.7472, allocations: 11.98 kB / 0.8605 GB, free: 6.547 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000409/0.7476, allocations: 19.98 kB / 0.8605 GB, free: 6.527 MB / 0.6231 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 8.455e-05/0.7477, allocations: 35.83 kB / 0.8606 GB, free: 6.492 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.2e-05/0.7477, allocations: 15.94 kB / 0.8606 GB, free: 6.477 MB / 0.6231 GB Notification: Performance of sorting global known variables: time 0.0009414/0.7487, allocations: 0.7914 MB / 0.8614 GB, free: 5.676 MB / 0.6231 GB Notification: Performance of sort global known variables: time 1.31e-07/0.7487, allocations: 0 / 0.8614 GB, free: 5.676 MB / 0.6231 GB Notification: Performance of remove unused functions: time 0.001079/0.7498, allocations: 407.4 kB / 0.8617 GB, free: 5.277 MB / 0.6231 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * Number of states: 0 () * Number of discrete variables: 3 ($whenCondition1,pulse_p.T_start,pulse_p.count) * Number of discrete states: 1 (pulse_p.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (31): * Single equations (assignments): 19 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 10 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 10 systems {1, 1, 1, 1, 1, 1, 1, 1, 1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0003726/0.7501, allocations: 184.6 kB / 0.8619 GB, free: 5.102 MB / 0.6231 GB Notification: Performance of simCode: created initialization part: time 0.003043/0.7532, allocations: 1.088 MB / 0.863 GB, free: 3.988 MB / 0.6231 GB Notification: Performance of simCode: created event and clocks part: time 3.606e-06/0.7532, allocations: 0 / 0.863 GB, free: 3.988 MB / 0.6231 GB Notification: Performance of simCode: created simulation system equations: time 0.0008171/0.754, allocations: 297.4 kB / 0.8633 GB, free: 3.699 MB / 0.6231 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001986/0.756, allocations: 447 kB / 0.8637 GB, free: 3.281 MB / 0.6231 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002681/0.7587, allocations: 1.787 MB / 0.8654 GB, free: 1.445 MB / 0.6231 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.00068/0.7594, allocations: 1.18 MB / 0.8666 GB, free: 240 kB / 0.6231 GB Notification: Performance of simCode: alias equations: time 0.000863/0.7603, allocations: 371.7 kB / 0.8669 GB, free: 15.87 MB / 0.6387 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001337/0.7604, allocations: 67.44 kB / 0.867 GB, free: 15.8 MB / 0.6387 GB Notification: Performance of SimCode: time 6.81e-07/0.7604, allocations: 0 / 0.867 GB, free: 15.8 MB / 0.6387 GB Notification: Performance of Templates: time 0.02819/0.7886, allocations: 18.12 MB / 0.8847 GB, free: 13.89 MB / 0.6544 GB make -j1 -f IDEAS_IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow.makefile (rm -f IDEAS_IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow.pipe ; mkfifo IDEAS_IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow.pipe ; head -c 1048576 < IDEAS_IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow.pipe >> ../files/IDEAS_IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow.sim & ./IDEAS_IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow -abortSlowSimulation -alarm=480 -lv LOG_STATS > IDEAS_IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow.pipe 2>&1)