Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.EulerComparison.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: "" <> buildModelFMU(BuildingSystems.Fluid.Movers.BaseClasses.Validation.EulerComparison,fileNamePrefix="BuildingSystems_BuildingSystems_Fluid_Movers_BaseClasses_Validation_EulerComparison",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(BuildingSystems.Fluid.Movers.BaseClasses.Validation.EulerComparison,fileNamePrefix="BuildingSystems_BuildingSystems_Fluid_Movers_BaseClasses_Validation_EulerComparison",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 0.001095/0.001095, allocations: 108 kB / 15.61 MB, free: 152 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00124/0.00124, allocations: 194.3 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 1.237/1.237, allocations: 222.9 MB / 240.2 MB, free: 4.402 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.002044/0.002044, allocations: 278.9 kB / 290.7 MB, free: 1.992 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo): time 0.8989/0.8989, allocations: 169.3 MB / 0.4982 GB, free: 13.88 MB / 382.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001651/0.001651, allocations: 104.3 kB / 0.5954 GB, free: 27.96 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1307/0.1324, allocations: 86.98 MB / 0.6803 GB, free: 0.5859 MB / 478.1 MB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.Movers.BaseClasses.Validation.EulerComparison): time 0.004721/0.1371, allocations: 3.737 MB / 0.6839 GB, free: 12.84 MB / 494.1 MB Notification: Performance of NFInst.instExpressions: time 0.006957/0.1441, allocations: 4.896 MB / 0.6887 GB, free: 7.93 MB / 494.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.000482/0.1446, allocations: 15.94 kB / 0.6887 GB, free: 7.914 MB / 494.1 MB Notification: Performance of NFTyping.typeComponents: time 0.00853/0.1532, allocations: 5.657 MB / 0.6943 GB, free: 2.25 MB / 494.1 MB Notification: Performance of NFTyping.typeBindings: time 0.001645/0.1549, allocations: 0.7703 MB / 0.695 GB, free: 1.477 MB / 494.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.001732/0.1566, allocations: 0.8345 MB / 0.6958 GB, free: 0.6406 MB / 494.1 MB Notification: Performance of NFFlatten.flatten: time 0.01397/0.1706, allocations: 10.06 MB / 0.7057 GB, free: 6.617 MB / 0.4981 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0002227/0.1708, allocations: 89.73 kB / 0.7057 GB, free: 6.523 MB / 0.4981 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0008024/0.1716, allocations: 0.5529 MB / 0.7063 GB, free: 5.969 MB / 0.4981 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0007234/0.1724, allocations: 0.5798 MB / 0.7068 GB, free: 5.387 MB / 0.4981 GB Notification: Performance of NFPackage.collectConstants: time 0.0001634/0.1725, allocations: 68 kB / 0.7069 GB, free: 5.32 MB / 0.4981 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002048/0.1746, allocations: 1.404 MB / 0.7083 GB, free: 3.914 MB / 0.4981 GB Notification: Performance of NFScalarize.scalarize: time 0.000596/0.1752, allocations: 0.7986 MB / 0.7091 GB, free: 3.113 MB / 0.4981 GB Notification: Performance of NFVerifyModel.verify: time 0.0008298/0.176, allocations: 0.8508 MB / 0.7099 GB, free: 2.258 MB / 0.4981 GB Notification: Performance of NFConvertDAE.convert: time 0.003009/0.1791, allocations: 3.057 MB / 0.7129 GB, free: 15.19 MB / 0.5137 GB Notification: Performance of FrontEnd - DAE generated: time 5.07e-06/0.1791, allocations: 8 kB / 0.7129 GB, free: 15.18 MB / 0.5137 GB Notification: Performance of FrontEnd: time 1.343e-06/0.1791, allocations: 4 kB / 0.7129 GB, free: 15.18 MB / 0.5137 GB Notification: Performance of Transformations before backend: time 3.871e-05/0.1791, allocations: 0 / 0.7129 GB, free: 15.18 MB / 0.5137 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 44 * Number of variables: 44 Notification: Performance of Generate backend data structure: time 0.003829/0.183, allocations: 2.282 MB / 0.7151 GB, free: 12.84 MB / 0.5137 GB Notification: Performance of prepare preOptimizeDAE: time 3.542e-05/0.183, allocations: 15.97 kB / 0.7151 GB, free: 12.82 MB / 0.5137 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 5.166e-05/0.1831, allocations: 46.55 kB / 0.7152 GB, free: 12.77 MB / 0.5137 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.00255/0.1856, allocations: 497.1 kB / 0.7156 GB, free: 12.28 MB / 0.5137 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.008232/0.1939, allocations: 5.478 MB / 0.721 GB, free: 6.727 MB / 0.5137 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.356e-05/0.1939, allocations: 28.33 kB / 0.721 GB, free: 6.699 MB / 0.5137 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001009/0.194, allocations: 28 kB / 0.7211 GB, free: 6.672 MB / 0.5137 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001264/0.1953, allocations: 0.6494 MB / 0.7217 GB, free: 6.016 MB / 0.5137 GB Notification: Performance of preOpt findStateOrder (simulation): time 8.836e-06/0.1953, allocations: 7.875 kB / 0.7217 GB, free: 6.008 MB / 0.5137 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.899e-05/0.1954, allocations: 12 kB / 0.7217 GB, free: 5.996 MB / 0.5137 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.694e-06/0.1954, allocations: 4 kB / 0.7217 GB, free: 5.992 MB / 0.5137 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001468/0.1969, allocations: 0.5308 MB / 0.7222 GB, free: 5.461 MB / 0.5137 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.003598/0.2005, allocations: 2.327 MB / 0.7245 GB, free: 3.074 MB / 0.5137 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001614/0.2021, allocations: 0.7014 MB / 0.7252 GB, free: 2.363 MB / 0.5137 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0007147/0.2028, allocations: 284.6 kB / 0.7255 GB, free: 2.082 MB / 0.5137 GB Notification: Performance of preOpt evalFunc (simulation): time 3.554e-05/0.2029, allocations: 11.98 kB / 0.7255 GB, free: 2.07 MB / 0.5137 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.034e-05/0.2029, allocations: 30.56 kB / 0.7255 GB, free: 2.031 MB / 0.5137 GB Notification: Performance of pre-optimization done (n=21): time 2.344e-06/0.2029, allocations: 4 kB / 0.7255 GB, free: 2.027 MB / 0.5137 GB Notification: Performance of matching and sorting (n=21): time 0.002645/0.2056, allocations: 1.03 MB / 0.7265 GB, free: 0.9922 MB / 0.5137 GB Notification: Performance of inlineWhenForInitialization (initialization): time 2.986e-05/0.2056, allocations: 55.41 kB / 0.7266 GB, free: 0.9258 MB / 0.5137 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.00367/0.2093, allocations: 2.948 MB / 0.7294 GB, free: 13.95 MB / 0.5294 GB Notification: Performance of collectPreVariables (initialization): time 6.787e-05/0.2093, allocations: 37.7 kB / 0.7295 GB, free: 13.91 MB / 0.5294 GB Notification: Performance of collectInitialEqns (initialization): time 0.0005543/0.2099, allocations: 0.6721 MB / 0.7301 GB, free: 13.23 MB / 0.5294 GB Notification: Performance of collectInitialBindings (initialization): time 8.354e-05/0.21, allocations: 79 kB / 0.7302 GB, free: 13.15 MB / 0.5294 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004816/0.2105, allocations: 394.5 kB / 0.7306 GB, free: 12.76 MB / 0.5294 GB Notification: Performance of setup shared object (initialization): time 8.334e-05/0.2106, allocations: 309.1 kB / 0.7309 GB, free: 12.45 MB / 0.5294 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001682/0.2123, allocations: 1.182 MB / 0.732 GB, free: 11.27 MB / 0.5294 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001893/0.2142, allocations: 1.535 MB / 0.7335 GB, free: 9.625 MB / 0.5294 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.003267/0.2174, allocations: 2.47 MB / 0.7359 GB, free: 7.059 MB / 0.5294 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 9.858e-06/0.2175, allocations: 4 kB / 0.7359 GB, free: 7.055 MB / 0.5294 GB Notification: Performance of matching and sorting (n=220) (initialization): time 0.004226/0.2217, allocations: 2.937 MB / 0.7388 GB, free: 4.109 MB / 0.5294 GB Notification: Performance of prepare postOptimizeDAE: time 2.14e-05/0.2217, allocations: 8 kB / 0.7388 GB, free: 4.102 MB / 0.5294 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.688e-05/0.2218, allocations: 12.03 kB / 0.7388 GB, free: 4.09 MB / 0.5294 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.952e-05/0.2218, allocations: 15.98 kB / 0.7388 GB, free: 4.074 MB / 0.5294 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001124/0.2229, allocations: 279.6 kB / 0.7391 GB, free: 3.801 MB / 0.5294 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 3.286e-05/0.223, allocations: 23.92 kB / 0.7391 GB, free: 3.777 MB / 0.5294 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001482/0.2245, allocations: 222.3 kB / 0.7393 GB, free: 3.559 MB / 0.5294 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001336/0.2246, allocations: 87.97 kB / 0.7394 GB, free: 3.473 MB / 0.5294 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.002134/0.2267, allocations: 1.476 MB / 0.7409 GB, free: 1.992 MB / 0.5294 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001734/0.2285, allocations: 1.399 MB / 0.7422 GB, free: 496 kB / 0.5294 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.00296/0.2315, allocations: 2.157 MB / 0.7443 GB, free: 14.23 MB / 0.545 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 7.975e-06/0.2315, allocations: 7.938 kB / 0.7444 GB, free: 14.22 MB / 0.545 GB Notification: Performance of matching and sorting (n=220) (initialization_lambda0): time 0.003965/0.2355, allocations: 2.628 MB / 0.7469 GB, free: 11.58 MB / 0.545 GB Notification: Performance of prepare postOptimizeDAE: time 1.496e-05/0.2355, allocations: 8 kB / 0.7469 GB, free: 11.57 MB / 0.545 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.216e-05/0.2355, allocations: 12 kB / 0.7469 GB, free: 11.56 MB / 0.545 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.436e-05/0.2355, allocations: 12 kB / 0.747 GB, free: 11.55 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00101/0.2365, allocations: 283.6 kB / 0.7472 GB, free: 11.27 MB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.173e-05/0.2366, allocations: 19.92 kB / 0.7472 GB, free: 11.25 MB / 0.545 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001447/0.238, allocations: 175.1 kB / 0.7474 GB, free: 11.08 MB / 0.545 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001113/0.2381, allocations: 79.97 kB / 0.7475 GB, free: 11 MB / 0.545 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 31 * 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 (140): * Single equations (assignments): 134 * Array equations: 2 * Algorithm blocks: 0 * Record equations: 4 * 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 0.000226/0.2384, allocations: 244.5 kB / 0.7477 GB, free: 10.76 MB / 0.545 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002758/0.2387, allocations: 169.7 kB / 0.7479 GB, free: 10.59 MB / 0.545 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002/0.2407, allocations: 0.7982 MB / 0.7487 GB, free: 9.785 MB / 0.545 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.212e-06/0.2407, allocations: 7.984 kB / 0.7487 GB, free: 9.777 MB / 0.545 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.729e-06/0.2407, allocations: 0 / 0.7487 GB, free: 9.777 MB / 0.545 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.078e-06/0.2407, allocations: 0 / 0.7487 GB, free: 9.777 MB / 0.545 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001204/0.2419, allocations: 1.087 MB / 0.7497 GB, free: 8.637 MB / 0.545 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.565e-06/0.2419, allocations: 0 / 0.7497 GB, free: 8.637 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0005207/0.2424, allocations: 91.86 kB / 0.7498 GB, free: 8.547 MB / 0.545 GB Notification: Performance of postOpt tearingSystem (simulation): time 3.216e-06/0.2425, allocations: 0 / 0.7498 GB, free: 8.547 MB / 0.545 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.059e-05/0.2425, allocations: 11.98 kB / 0.7498 GB, free: 8.535 MB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 3.427e-06/0.2425, allocations: 4 kB / 0.7498 GB, free: 8.531 MB / 0.545 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.703e-06/0.2425, allocations: 4 kB / 0.7498 GB, free: 8.527 MB / 0.545 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001712/0.2442, allocations: 0.8607 MB / 0.7507 GB, free: 7.648 MB / 0.545 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0005156/0.2447, allocations: 374.5 kB / 0.751 GB, free: 7.262 MB / 0.545 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002313/0.245, allocations: 0 / 0.751 GB, free: 7.262 MB / 0.545 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0009158/0.2459, allocations: 91.89 kB / 0.7511 GB, free: 7.172 MB / 0.545 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 6.106e-05/0.246, allocations: 15.98 kB / 0.7511 GB, free: 7.156 MB / 0.545 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.809e-05/0.246, allocations: 19.98 kB / 0.7512 GB, free: 7.137 MB / 0.545 GB Notification: Performance of sorting global known variables: time 0.002464/0.2485, allocations: 2.028 MB / 0.7531 GB, free: 5.094 MB / 0.545 GB Notification: Performance of sort global known variables: time 2.1e-07/0.2485, allocations: 0 / 0.7531 GB, free: 5.094 MB / 0.545 GB Notification: Performance of remove unused functions: time 0.001888/0.2504, allocations: 0.8161 MB / 0.7539 GB, free: 4.277 MB / 0.545 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * 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 (23): * Single equations (assignments): 23 * 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 Backend phase and start with SimCode phase: time 0.00298/0.2534, allocations: 1.778 MB / 0.7557 GB, free: 2.469 MB / 0.545 GB Notification: Performance of simCode: created initialization part: time 0.004438/0.2578, allocations: 3.034 MB / 0.7586 GB, free: 15.44 MB / 0.5606 GB Notification: Performance of simCode: created event and clocks part: time 2.434e-06/0.2579, allocations: 0 / 0.7586 GB, free: 15.44 MB / 0.5606 GB Notification: Performance of simCode: created simulation system equations: time 0.0007271/0.2586, allocations: 288.5 kB / 0.7589 GB, free: 15.16 MB / 0.5606 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002702/0.2613, allocations: 0.8578 MB / 0.7597 GB, free: 14.32 MB / 0.5606 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.2537/0.515, allocations: 21.35 MB / 0.7806 GB, free: 88.07 MB / 0.5606 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0007119/0.5157, allocations: 1.413 MB / 0.782 GB, free: 87.24 MB / 0.5606 GB Notification: Performance of simCode: alias equations: time 0.001724/0.5175, allocations: 0.5133 MB / 0.7825 GB, free: 87.22 MB / 0.5606 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0007308/0.5182, allocations: 0.6616 MB / 0.7831 GB, free: 86.73 MB / 0.5606 GB Notification: Performance of SimCode: time 7.12e-07/0.5182, allocations: 0 / 0.7831 GB, free: 86.73 MB / 0.5606 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.07781/0.596, allocations: 58.16 MB / 0.8399 GB, free: 47.26 MB / 0.5606 GB Notification: Performance of buildModelFMU: Generate platform static: time 8.349/8.945, allocations: 19.39 kB / 0.8399 GB, free: 47.24 MB / 0.5606 GB (rm -f BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.EulerComparison.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.EulerComparison.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.EulerComparison.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.EulerComparison.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_BuildingSystems_BuildingSystems_Fluid_Movers_BaseClasses_Validation_EulerComparison_fmu --startTime=0 --stopTime=1 --timeout=50 --tolerance=1e-06 BuildingSystems_BuildingSystems_Fluid_Movers_BaseClasses_Validation_EulerComparison.fmu > BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.EulerComparison.pipe 2>&1)