Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr EHPTlib_latest_EHPTlib.MapBased.TestingModels.TestOneFlangeConn.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/EHPTlib 2.1.4-main/package.mo", uses=false) Using package EHPTlib with version 2.1.4 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/EHPTlib 2.1.4-main/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(EHPTlib.MapBased.TestingModels.TestOneFlangeConn,fileNamePrefix="EHPTlib_latest_EHPTlib_MapBased_TestingModels_TestOneFlangeConn",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(EHPTlib.MapBased.TestingModels.TestOneFlangeConn,fileNamePrefix="EHPTlib_latest_EHPTlib_MapBased_TestingModels_TestOneFlangeConn",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 0.00101/0.00101, allocations: 115.3 kB / 15.34 MB, free: 0.5156 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001094/0.001094, allocations: 190.8 kB / 16.25 MB, free: 6.629 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.221/1.221, allocations: 222.9 MB / 239.9 MB, free: 4.461 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/EHPTlib 2.1.4-main/package.mo): time 0.1332/0.1332, allocations: 8.023 MB / 298.1 MB, free: 2.488 MB / 238.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001087/0.001087, allocations: 59.91 kB / 360.2 MB, free: 14.57 MB / 302.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.0892/0.09031, allocations: 51.19 MB / 411.4 MB, free: 11.34 MB / 350.1 MB Notification: Performance of NFInst.instantiate(EHPTlib.MapBased.TestingModels.TestOneFlangeConn): time 0.005043/0.09538, allocations: 4.149 MB / 415.6 MB, free: 7.168 MB / 350.1 MB Notification: Performance of NFInst.instExpressions: time 0.002141/0.09754, allocations: 1.395 MB / 417 MB, free: 5.77 MB / 350.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0002758/0.09784, allocations: 15.94 kB / 417 MB, free: 5.754 MB / 350.1 MB Notification: Performance of NFTyping.typeComponents: time 0.0003801/0.09822, allocations: 123.3 kB / 417.1 MB, free: 5.633 MB / 350.1 MB Notification: Performance of NFTyping.typeBindings: time 0.0004595/0.09872, allocations: 159 kB / 417.3 MB, free: 5.477 MB / 350.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.0006606/0.09939, allocations: 343.3 kB / 417.6 MB, free: 5.145 MB / 350.1 MB Notification: Performance of NFFlatten.flatten: time 0.0007389/0.1001, allocations: 0.8456 MB / 418.4 MB, free: 4.293 MB / 350.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0005957/0.1007, allocations: 495.6 kB / 418.9 MB, free: 3.789 MB / 350.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.000302/0.1011, allocations: 326.8 kB / 419.3 MB, free: 3.469 MB / 350.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.000361/0.1014, allocations: 362.4 kB / 419.6 MB, free: 3.113 MB / 350.1 MB Notification: Performance of NFPackage.collectConstants: time 9.553e-05/0.1015, allocations: 99.94 kB / 419.7 MB, free: 3.016 MB / 350.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0001743/0.1017, allocations: 128 kB / 419.8 MB, free: 2.891 MB / 350.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0002142/0.1019, allocations: 203.4 kB / 420 MB, free: 2.691 MB / 350.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0002949/0.1022, allocations: 406.1 kB / 420.4 MB, free: 2.293 MB / 350.1 MB Notification: Performance of NFConvertDAE.convert: time 0.0008707/0.1031, allocations: 1.024 MB / 421.4 MB, free: 1.266 MB / 350.1 MB Notification: Performance of FrontEnd - DAE generated: time 4.458e-06/0.1031, allocations: 0 / 421.4 MB, free: 1.266 MB / 350.1 MB Notification: Performance of FrontEnd: time 1.492e-06/0.1031, allocations: 0 / 421.4 MB, free: 1.266 MB / 350.1 MB Notification: Performance of Transformations before backend: time 1.084e-05/0.1031, allocations: 4 kB / 421.5 MB, free: 1.262 MB / 350.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 161 * Number of variables: 161 Notification: Performance of Generate backend data structure: time 0.00167/0.1048, allocations: 1.131 MB / 422.6 MB, free: 64 kB / 350.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.352e-05/0.1049, allocations: 8.031 kB / 422.6 MB, free: 56 kB / 350.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.1536/0.2585, allocations: 110.3 kB / 422.7 MB, free: 44.6 MB / 350.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001635/0.2586, allocations: 80.09 kB / 422.8 MB, free: 44.6 MB / 350.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0005781/0.2592, allocations: 0.4989 MB / 423.3 MB, free: 44.35 MB / 350.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.592e-05/0.2593, allocations: 52.45 kB / 423.3 MB, free: 44.35 MB / 350.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 8.877e-05/0.2594, allocations: 62.78 kB / 423.4 MB, free: 44.35 MB / 350.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001079/0.2605, allocations: 0.6725 MB / 424.1 MB, free: 44.27 MB / 350.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 2.582e-05/0.2605, allocations: 11.06 kB / 424.1 MB, free: 44.26 MB / 350.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.189e-05/0.2606, allocations: 26.09 kB / 424.1 MB, free: 44.26 MB / 350.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.137e-05/0.2606, allocations: 15.91 kB / 424.1 MB, free: 44.26 MB / 350.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0009334/0.2615, allocations: 492 kB / 424.6 MB, free: 44.25 MB / 350.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002836/0.2644, allocations: 2.584 MB / 427.2 MB, free: 42.99 MB / 350.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.0008144/0.2652, allocations: 430.1 kB / 427.6 MB, free: 42.77 MB / 350.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003353/0.2655, allocations: 170.2 kB / 427.8 MB, free: 42.71 MB / 350.1 MB Notification: Performance of preOpt evalFunc (simulation): time 3.463e-05/0.2656, allocations: 5.828 kB / 427.8 MB, free: 42.71 MB / 350.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.000553/0.2661, allocations: 250.3 kB / 428 MB, free: 42.59 MB / 350.1 MB Notification: Performance of pre-optimization done (n=31): time 1.843e-06/0.2661, allocations: 0 / 428 MB, free: 42.59 MB / 350.1 MB Notification: Performance of matching and sorting (n=31): time 0.001352/0.2675, allocations: 0.6859 MB / 428.7 MB, free: 42.23 MB / 350.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 5.528e-05/0.2676, allocations: 134.8 kB / 428.8 MB, free: 42.07 MB / 350.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0005166/0.2681, allocations: 0.5696 MB / 429.4 MB, free: 41.82 MB / 350.1 MB Notification: Performance of collectPreVariables (initialization): time 3.038e-05/0.2681, allocations: 32.92 kB / 429.4 MB, free: 41.78 MB / 350.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0001732/0.2683, allocations: 346.5 kB / 429.8 MB, free: 41.51 MB / 350.1 MB Notification: Performance of collectInitialBindings (initialization): time 6.692e-05/0.2684, allocations: 113.2 kB / 429.9 MB, free: 41.43 MB / 350.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001066/0.2685, allocations: 78.58 kB / 430 MB, free: 41.39 MB / 350.1 MB Notification: Performance of setup shared object (initialization): time 7.338e-05/0.2686, allocations: 361.2 kB / 430.3 MB, free: 41.05 MB / 350.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003499/0.2689, allocations: 158.7 kB / 430.5 MB, free: 41 MB / 350.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0003768/0.2693, allocations: 259.2 kB / 430.7 MB, free: 40.83 MB / 350.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.0007214/0.27, allocations: 0.5262 MB / 431.2 MB, free: 40.45 MB / 350.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.026e-06/0.2701, allocations: 0 / 431.2 MB, free: 40.45 MB / 350.1 MB Notification: Performance of matching and sorting (n=47) (initialization): time 0.000937/0.271, allocations: 0.5965 MB / 431.8 MB, free: 40.15 MB / 350.1 MB Notification: Performance of prepare postOptimizeDAE: time 3.902e-05/0.2711, allocations: 89.97 kB / 431.9 MB, free: 40.05 MB / 350.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.572e-06/0.2711, allocations: 3.281 kB / 431.9 MB, free: 40.05 MB / 350.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.000132/0.2712, allocations: 29.11 kB / 432 MB, free: 40.04 MB / 350.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002951/0.2715, allocations: 79.02 kB / 432 MB, free: 40.04 MB / 350.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0006558/0.2722, allocations: 1.388 MB / 433.4 MB, free: 38.63 MB / 350.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003922/0.2726, allocations: 75.95 kB / 433.5 MB, free: 38.6 MB / 350.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.537e-05/0.2726, allocations: 23.08 kB / 433.5 MB, free: 38.6 MB / 350.1 MB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0004475/0.2731, allocations: 315.6 kB / 433.8 MB, free: 38.43 MB / 350.1 MB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0003206/0.2734, allocations: 241.8 kB / 434.1 MB, free: 38.26 MB / 350.1 MB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0006126/0.274, allocations: 0.5166 MB / 434.6 MB, free: 37.87 MB / 350.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.444e-06/0.274, allocations: 3.156 kB / 434.6 MB, free: 37.87 MB / 350.1 MB Notification: Performance of matching and sorting (n=47) (initialization_lambda0): time 0.0008345/0.2749, allocations: 0.5587 MB / 435.1 MB, free: 37.59 MB / 350.1 MB Notification: Performance of prepare postOptimizeDAE: time 3.374e-05/0.2749, allocations: 90.39 kB / 435.2 MB, free: 37.49 MB / 350.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.607e-06/0.2749, allocations: 8.453 kB / 435.2 MB, free: 37.49 MB / 350.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 6.901e-05/0.275, allocations: 25.77 kB / 435.3 MB, free: 37.48 MB / 350.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002617/0.2753, allocations: 80.25 kB / 435.3 MB, free: 37.47 MB / 350.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0005755/0.2759, allocations: 1.39 MB / 436.7 MB, free: 36.06 MB / 350.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003674/0.2762, allocations: 64.75 kB / 436.8 MB, free: 36.04 MB / 350.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.698e-05/0.2763, allocations: 12.72 kB / 436.8 MB, free: 36.04 MB / 350.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 13 * Number of states: 0 () * Number of discrete variables: 7 (tauRef.count,$PRE.tauRef.count,tauRef.T_start,$PRE.tauRef.T_start,oneFlangeConn.limTau.state,$whenCondition1,oneFlangeConn.constPDC.integrator1.local_reset) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (43): * Single equations (assignments): 39 * Array equations: 0 * Algorithm blocks: 3 * 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): 1 system {(1,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0001357/0.2764, allocations: 277.2 kB / 437.1 MB, free: 35.78 MB / 350.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 6.298e-05/0.2765, allocations: 55.41 kB / 437.1 MB, free: 35.75 MB / 350.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0008919/0.2774, allocations: 0.4894 MB / 437.6 MB, free: 35.5 MB / 350.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.927e-06/0.2774, allocations: 9.734 kB / 437.6 MB, free: 35.5 MB / 350.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.494e-06/0.2774, allocations: 3.094 kB / 437.6 MB, free: 35.5 MB / 350.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.418e-06/0.2774, allocations: 0 / 437.6 MB, free: 35.5 MB / 350.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001349/0.2788, allocations: 1.143 MB / 438.8 MB, free: 34.84 MB / 350.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.064e-06/0.2788, allocations: 0 / 438.8 MB, free: 34.84 MB / 350.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002729/0.2791, allocations: 59 kB / 438.8 MB, free: 34.84 MB / 350.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 6.94e-05/0.2791, allocations: 22.11 kB / 438.9 MB, free: 34.83 MB / 350.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.847e-05/0.2792, allocations: 15.23 kB / 438.9 MB, free: 34.82 MB / 350.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0005699/0.2798, allocations: 1.378 MB / 440.3 MB, free: 33.41 MB / 350.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.022e-06/0.2798, allocations: 0 / 440.3 MB, free: 33.41 MB / 350.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001183/0.281, allocations: 0.7647 MB / 441 MB, free: 32.99 MB / 350.1 MB Notification: Performance of postOpt removeConstants (simulation): time 8.177e-05/0.281, allocations: 139.1 kB / 441.2 MB, free: 32.86 MB / 350.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 6.543e-05/0.2811, allocations: 9.812 kB / 441.2 MB, free: 32.85 MB / 350.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003506/0.2815, allocations: 51.09 kB / 441.2 MB, free: 32.84 MB / 350.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 8.918e-05/0.2816, allocations: 25.59 kB / 441.2 MB, free: 32.84 MB / 350.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.588e-05/0.2816, allocations: 18.52 kB / 441.3 MB, free: 32.83 MB / 350.1 MB Notification: Performance of sorting global known variables: time 0.0003339/0.2819, allocations: 406.2 kB / 441.7 MB, free: 32.65 MB / 350.1 MB Notification: Performance of sort global known variables: time 1.1e-07/0.282, allocations: 3.344 kB / 441.7 MB, free: 32.65 MB / 350.1 MB Notification: Performance of remove unused functions: time 0.0006571/0.2826, allocations: 272.1 kB / 441.9 MB, free: 32.58 MB / 350.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 3 (inertia.w,loadTorque.phi,oneFlangeConn.constPDC.integrator1.y) * Number of discrete variables: 4 ($whenCondition1,oneFlangeConn.limTau.state,tauRef.T_start,tauRef.count) * Number of discrete states: 2 (tauRef.count,oneFlangeConn.limTau.state) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (28): * Single equations (assignments): 23 * Array equations: 0 * Algorithm blocks: 2 * Record equations: 0 * When equations: 2 * 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): 1 system {(1,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.002026/0.2846, allocations: 1.566 MB / 443.5 MB, free: 31.61 MB / 350.1 MB Notification: Performance of simCode: created initialization part: time 0.001531/0.2862, allocations: 1.189 MB / 444.7 MB, free: 30.79 MB / 350.1 MB Notification: Performance of simCode: created event and clocks part: time 2.445e-06/0.2862, allocations: 0 / 444.7 MB, free: 30.79 MB / 350.1 MB Notification: Performance of simCode: created simulation system equations: time 0.0004841/0.2867, allocations: 426.8 kB / 445.1 MB, free: 30.49 MB / 350.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0005075/0.2872, allocations: 95.19 kB / 445.2 MB, free: 30.45 MB / 350.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.006295/0.2935, allocations: 5.712 MB / 450.9 MB, free: 27.05 MB / 350.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0002699/0.2938, allocations: 0.8904 MB / 451.8 MB, free: 26.34 MB / 350.1 MB Notification: Performance of simCode: alias equations: time 0.0002325/0.294, allocations: 63.56 kB / 451.8 MB, free: 26.32 MB / 350.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002319/0.2943, allocations: 217.7 kB / 452.1 MB, free: 26.16 MB / 350.1 MB Notification: Performance of SimCode: time 1.012e-06/0.2943, allocations: 0 / 452.1 MB, free: 26.16 MB / 350.1 MB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.02555/0.3199, allocations: 12.29 MB / 464.4 MB, free: 24.91 MB / 350.1 MB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0001872/0.3201, allocations: 268.9 kB / 464.6 MB, free: 24.57 MB / 350.1 MB Notification: Performance of buildModelFMU: Generate platform static: time 1.832/2.152, allocations: 1.031 kB / 464.6 MB, free: 24.57 MB / 350.1 MB (rm -f EHPTlib_latest_EHPTlib.MapBased.TestingModels.TestOneFlangeConn.pipe ; mkfifo EHPTlib_latest_EHPTlib.MapBased.TestingModels.TestOneFlangeConn.pipe ; head -c 1048576 < EHPTlib_latest_EHPTlib.MapBased.TestingModels.TestOneFlangeConn.pipe >> ../files/EHPTlib_latest_EHPTlib.MapBased.TestingModels.TestOneFlangeConn.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_EHPTlib_latest_EHPTlib_MapBased_TestingModels_TestOneFlangeConn_fmu --startTime=0 --stopTime=50 --timeout=50 --tolerance=1e-06 EHPTlib_latest_EHPTlib_MapBased_TestingModels_TestOneFlangeConn.fmu > EHPTlib_latest_EHPTlib.MapBased.TestingModels.TestOneFlangeConn.pipe 2>&1)