Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.MotorEfficiencyMethods.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.MotorEfficiencyMethods,fileNamePrefix="BuildingSystems_BuildingSystems_Fluid_Movers_BaseClasses_Validation_MotorEfficiencyMethods",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(BuildingSystems.Fluid.Movers.BaseClasses.Validation.MotorEfficiencyMethods,fileNamePrefix="BuildingSystems_BuildingSystems_Fluid_Movers_BaseClasses_Validation_MotorEfficiencyMethods",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 0.0009659/0.0009659, allocations: 97.64 kB / 15.36 MB, free: 0.7344 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.005765/0.005765, allocations: 170.1 kB / 16.27 MB, free: 6.66 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.326/1.326, allocations: 223.2 MB / 240.3 MB, free: 5.352 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.001804/0.001804, allocations: 267.1 kB / 291.7 MB, free: 1.883 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo): time 0.9444/0.9444, allocations: 169.5 MB / 0.5004 GB, free: 14.09 MB / 382.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0006128/0.0006128, allocations: 11.5 kB / 0.5988 GB, free: 28.03 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.168/0.1687, allocations: 88.55 MB / 0.6852 GB, free: 14.97 MB / 494.1 MB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.Movers.BaseClasses.Validation.MotorEfficiencyMethods): time 0.004405/0.1731, allocations: 4.474 MB / 0.6896 GB, free: 10.47 MB / 494.1 MB Notification: Performance of NFInst.instExpressions: time 0.008347/0.1815, allocations: 5.656 MB / 0.6951 GB, free: 4.82 MB / 494.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0006582/0.1822, allocations: 19.88 kB / 0.6952 GB, free: 4.801 MB / 494.1 MB Notification: Performance of NFTyping.typeComponents: time 0.01541/0.1976, allocations: 11.17 MB / 0.7061 GB, free: 9.621 MB / 0.4981 GB Notification: Performance of NFTyping.typeBindings: time 0.002817/0.2004, allocations: 1.137 MB / 0.7072 GB, free: 8.48 MB / 0.4981 GB Notification: Performance of NFTyping.typeClassSections: time 0.002795/0.2032, allocations: 1.407 MB / 0.7085 GB, free: 7.074 MB / 0.4981 GB [/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/Compiler/NFFrontEnd/NFCeval.mo:1080:9-1080:67:writable] Error: Internal error NFCeval.evalBinaryMul failed to evaluate ‘{0.0, 1.0}[pressure.n] * 0.0‘ Notification: Performance of NFFlatten.flatten: time 0.01981/0.2231, allocations: 15.84 MB / 0.724 GB, free: 7.207 MB / 0.5137 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0003496/0.2234, allocations: 160.4 kB / 0.7242 GB, free: 7.039 MB / 0.5137 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001038/0.2245, allocations: 0.6808 MB / 0.7248 GB, free: 6.355 MB / 0.5137 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0008925/0.2254, allocations: 0.8168 MB / 0.7256 GB, free: 5.535 MB / 0.5137 GB Notification: Performance of NFPackage.collectConstants: time 0.0001094/0.2255, allocations: 44 kB / 0.7257 GB, free: 5.492 MB / 0.5137 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001538/0.227, allocations: 0.8696 MB / 0.7265 GB, free: 4.621 MB / 0.5137 GB Notification: Performance of NFScalarize.scalarize: time 0.0006887/0.2277, allocations: 0.8763 MB / 0.7274 GB, free: 3.742 MB / 0.5137 GB Notification: Performance of NFVerifyModel.verify: time 0.0007839/0.2285, allocations: 1.003 MB / 0.7284 GB, free: 2.727 MB / 0.5137 GB Notification: Performance of NFConvertDAE.convert: time 0.002486/0.231, allocations: 2.927 MB / 0.7312 GB, free: 15.79 MB / 0.5294 GB Notification: Performance of FrontEnd - DAE generated: time 3.246e-06/0.231, allocations: 3.938 kB / 0.7312 GB, free: 15.79 MB / 0.5294 GB Notification: Performance of FrontEnd: time 1.423e-06/0.2311, allocations: 0 / 0.7312 GB, free: 15.79 MB / 0.5294 GB Notification: Performance of Transformations before backend: time 1.953e-05/0.2311, allocations: 4 kB / 0.7312 GB, free: 15.78 MB / 0.5294 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 75 * Number of variables: 75 Notification: Performance of Generate backend data structure: time 0.003527/0.2346, allocations: 2.375 MB / 0.7335 GB, free: 13.34 MB / 0.5294 GB Notification: Performance of prepare preOptimizeDAE: time 3.986e-05/0.2347, allocations: 15.97 kB / 0.7336 GB, free: 13.32 MB / 0.5294 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 7.416e-05/0.2347, allocations: 62.53 kB / 0.7336 GB, free: 13.25 MB / 0.5294 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.003071/0.2378, allocations: 0.6019 MB / 0.7342 GB, free: 12.65 MB / 0.5294 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.008363/0.2462, allocations: 5.685 MB / 0.7398 GB, free: 6.898 MB / 0.5294 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001144/0.2463, allocations: 49.02 kB / 0.7398 GB, free: 6.852 MB / 0.5294 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001089/0.2464, allocations: 48 kB / 0.7398 GB, free: 6.805 MB / 0.5294 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001525/0.248, allocations: 0.6773 MB / 0.7405 GB, free: 6.121 MB / 0.5294 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.029e-05/0.248, allocations: 0 / 0.7405 GB, free: 6.121 MB / 0.5294 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.754e-05/0.2481, allocations: 11.94 kB / 0.7405 GB, free: 6.109 MB / 0.5294 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 9.017e-06/0.2481, allocations: 12 kB / 0.7405 GB, free: 6.098 MB / 0.5294 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001961/0.25, allocations: 0.6232 MB / 0.7411 GB, free: 5.473 MB / 0.5294 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.004092/0.2541, allocations: 2.73 MB / 0.7438 GB, free: 2.672 MB / 0.5294 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002194/0.2564, allocations: 0.7536 MB / 0.7445 GB, free: 1.91 MB / 0.5294 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0009353/0.2573, allocations: 313.9 kB / 0.7448 GB, free: 1.602 MB / 0.5294 GB Notification: Performance of preOpt evalFunc (simulation): time 3.832e-05/0.2574, allocations: 12.25 kB / 0.7449 GB, free: 1.59 MB / 0.5294 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.131e-05/0.2574, allocations: 30.84 kB / 0.7449 GB, free: 1.551 MB / 0.5294 GB Notification: Performance of pre-optimization done (n=33): time 2.976e-06/0.2574, allocations: 0 / 0.7449 GB, free: 1.551 MB / 0.5294 GB Notification: Performance of matching and sorting (n=33): time 0.003315/0.2607, allocations: 1.172 MB / 0.746 GB, free: 380 kB / 0.5294 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.673e-05/0.2608, allocations: 55.41 kB / 0.7461 GB, free: 312 kB / 0.5294 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.004264/0.265, allocations: 3.373 MB / 0.7494 GB, free: 12.91 MB / 0.545 GB Notification: Performance of collectPreVariables (initialization): time 8.507e-05/0.2651, allocations: 37.7 kB / 0.7494 GB, free: 12.87 MB / 0.545 GB Notification: Performance of collectInitialEqns (initialization): time 0.0008171/0.2659, allocations: 0.822 MB / 0.7502 GB, free: 12.05 MB / 0.545 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001346/0.2661, allocations: 142.3 kB / 0.7503 GB, free: 11.91 MB / 0.545 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003339/0.2664, allocations: 323.8 kB / 0.7507 GB, free: 11.59 MB / 0.545 GB Notification: Performance of setup shared object (initialization): time 0.0001109/0.2665, allocations: 301.1 kB / 0.7509 GB, free: 11.29 MB / 0.545 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002068/0.2686, allocations: 1.23 MB / 0.7521 GB, free: 10.06 MB / 0.545 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002597/0.2712, allocations: 1.718 MB / 0.7538 GB, free: 8.188 MB / 0.545 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.004417/0.2757, allocations: 2.597 MB / 0.7564 GB, free: 5.477 MB / 0.545 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.832e-06/0.2757, allocations: 0 / 0.7564 GB, free: 5.477 MB / 0.545 GB Notification: Performance of matching and sorting (n=339) (initialization): time 0.005377/0.2811, allocations: 3.294 MB / 0.7596 GB, free: 2.168 MB / 0.545 GB Notification: Performance of prepare postOptimizeDAE: time 0.0002408/0.2813, allocations: 354.4 kB / 0.7599 GB, free: 1.699 MB / 0.545 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.935e-05/0.2813, allocations: 8 kB / 0.7599 GB, free: 1.691 MB / 0.545 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.89e-05/0.2814, allocations: 23.94 kB / 0.7599 GB, free: 1.668 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001512/0.2829, allocations: 411.4 kB / 0.7603 GB, free: 1.266 MB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 3.132e-05/0.2829, allocations: 23.94 kB / 0.7604 GB, free: 1.242 MB / 0.545 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001864/0.2848, allocations: 310.1 kB / 0.7607 GB, free: 0.9375 MB / 0.545 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001614/0.285, allocations: 104 kB / 0.7608 GB, free: 0.8359 MB / 0.545 GB Notification: Performance of prepare postOptimizeDAE: time 7.064e-06/0.285, allocations: 4 kB / 0.7608 GB, free: 0.832 MB / 0.545 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.00488/0.2899, allocations: 2.89 MB / 0.7636 GB, free: 13.94 MB / 0.5606 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.608e-05/0.2899, allocations: 12 kB / 0.7636 GB, free: 13.93 MB / 0.5606 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.626e-05/0.2899, allocations: 16 kB / 0.7636 GB, free: 13.91 MB / 0.5606 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001455/0.2914, allocations: 399.7 kB / 0.764 GB, free: 13.52 MB / 0.5606 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.066e-05/0.2914, allocations: 19.94 kB / 0.764 GB, free: 13.5 MB / 0.5606 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001573/0.293, allocations: 258.1 kB / 0.7643 GB, free: 13.25 MB / 0.5606 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001478/0.2932, allocations: 95.97 kB / 0.7643 GB, free: 13.15 MB / 0.5606 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 39 * 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 (207): * Single equations (assignments): 199 * Array equations: 4 * 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 0.001087/0.2943, allocations: 0.7124 MB / 0.765 GB, free: 12.43 MB / 0.5606 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002867/0.2946, allocations: 220.9 kB / 0.7652 GB, free: 12.21 MB / 0.5606 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002609/0.2972, allocations: 0.913 MB / 0.7661 GB, free: 11.29 MB / 0.5606 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.055e-06/0.2972, allocations: 4 kB / 0.7661 GB, free: 11.29 MB / 0.5606 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.179e-06/0.2972, allocations: 3.938 kB / 0.7661 GB, free: 11.28 MB / 0.5606 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.372e-06/0.2972, allocations: 3.984 kB / 0.7662 GB, free: 11.28 MB / 0.5606 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001547/0.2988, allocations: 1.245 MB / 0.7674 GB, free: 9.977 MB / 0.5606 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.903e-06/0.2988, allocations: 0 / 0.7674 GB, free: 9.977 MB / 0.5606 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0007193/0.2995, allocations: 131.8 kB / 0.7675 GB, free: 9.848 MB / 0.5606 GB Notification: Performance of postOpt tearingSystem (simulation): time 6.442e-06/0.2995, allocations: 4 kB / 0.7675 GB, free: 9.844 MB / 0.5606 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.614e-05/0.2996, allocations: 15.98 kB / 0.7675 GB, free: 9.828 MB / 0.5606 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 2.775e-06/0.2996, allocations: 0 / 0.7675 GB, free: 9.828 MB / 0.5606 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.975e-06/0.2996, allocations: 4 kB / 0.7675 GB, free: 9.824 MB / 0.5606 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002334/0.3019, allocations: 0.9867 MB / 0.7685 GB, free: 8.816 MB / 0.5606 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0005539/0.3025, allocations: 409.7 kB / 0.7689 GB, free: 8.395 MB / 0.5606 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002254/0.3027, allocations: 12 kB / 0.7689 GB, free: 8.383 MB / 0.5606 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001148/0.3039, allocations: 99.88 kB / 0.769 GB, free: 8.285 MB / 0.5606 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.966e-05/0.304, allocations: 27.95 kB / 0.769 GB, free: 8.258 MB / 0.5606 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.804e-05/0.304, allocations: 27.92 kB / 0.769 GB, free: 8.23 MB / 0.5606 GB Notification: Performance of sorting global known variables: time 0.003051/0.3071, allocations: 2.239 MB / 0.7712 GB, free: 5.992 MB / 0.5606 GB Notification: Performance of sort global known variables: time 1.654e-06/0.3071, allocations: 0 / 0.7712 GB, free: 5.992 MB / 0.5606 GB Notification: Performance of remove unused functions: time 0.002274/0.3094, allocations: 0.9137 MB / 0.7721 GB, free: 5.078 MB / 0.5606 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 (37): * Single equations (assignments): 37 * 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 0.004052/0.3134, allocations: 1.814 MB / 0.7739 GB, free: 3.234 MB / 0.5606 GB Notification: Performance of simCode: created initialization part: time 0.2887/0.6022, allocations: 3.507 MB / 0.7773 GB, free: 90.76 MB / 0.5606 GB Notification: Performance of simCode: created event and clocks part: time 5.169e-06/0.6022, allocations: 0.5312 kB / 0.7773 GB, free: 90.76 MB / 0.5606 GB Notification: Performance of simCode: created simulation system equations: time 0.001113/0.6033, allocations: 343.5 kB / 0.7776 GB, free: 90.76 MB / 0.5606 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004304/0.6077, allocations: 0.8449 MB / 0.7785 GB, free: 90.73 MB / 0.5606 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.04977/0.6575, allocations: 24.04 MB / 0.8019 GB, free: 80.37 MB / 0.5606 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001293/0.6588, allocations: 1.644 MB / 0.8035 GB, free: 79.48 MB / 0.5606 GB Notification: Performance of simCode: alias equations: time 0.002624/0.6614, allocations: 0.6815 MB / 0.8042 GB, free: 79.32 MB / 0.5606 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0009786/0.6624, allocations: 0.873 MB / 0.8051 GB, free: 78.65 MB / 0.5606 GB Notification: Performance of SimCode: time 9.42e-07/0.6624, allocations: 0 / 0.8051 GB, free: 78.65 MB / 0.5606 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.07608/0.7385, allocations: 60.7 MB / 0.8643 GB, free: 24.62 MB / 0.5606 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.000211/0.7388, allocations: 238.6 kB / 0.8646 GB, free: 24.37 MB / 0.5606 GB Notification: Performance of buildModelFMU: Generate platform static: time 3.25/3.989, allocations: 6.812 kB / 0.8646 GB, free: 24.36 MB / 0.5606 GB (rm -f BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.MotorEfficiencyMethods.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.MotorEfficiencyMethods.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.MotorEfficiencyMethods.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.MotorEfficiencyMethods.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_BuildingSystems_BuildingSystems_Fluid_Movers_BaseClasses_Validation_MotorEfficiencyMethods_fmu --startTime=0 --stopTime=1 --timeout=50 --tolerance=1e-06 BuildingSystems_BuildingSystems_Fluid_Movers_BaseClasses_Validation_MotorEfficiencyMethods.fmu > BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.MotorEfficiencyMethods.pipe 2>&1)