Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ScalableTestSuite_noopt_ScalableTestSuite.Mechanical.FlexibleBeam.ScaledExperiments.FlexibleBeamModelica_N_16.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo", uses=false) [Timeout 180] "[:1:22-1:33:writable] Warning: Modelica only supports 32-bit signed integers! Transforming: 13743895347 into a real Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo): time 0.0002725/0.0002725, allocations: 0 / 0, free: 0 / 0 " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.1.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.1.0+maint.om/package.mo): time 0.0001963/0.0001963, allocations: 0 / 0, free: 0 / 0 " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/package.mo): time 0.09764/0.09764, allocations: 0 / 0, free: 0 / 0 " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ScalableTestSuite master/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ScalableTestSuite master/package.mo): time 0.04524/0.04524, allocations: 0 / 0, free: 0 / 0 " [Timeout remaining time 180] Using package ScalableTestSuite with version 2.2.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ScalableTestSuite master/package.mo) Using package Modelica with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/package.mo) Using package Complex with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.1.0+maint.om/package.mo) Using package ModelicaServices with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo) Running command: simulate(ScalableTestSuite.Mechanical.FlexibleBeam.ScaledExperiments.FlexibleBeamModelica_N_16,startTime=0,stopTime=0.04,tolerance=3e-08,numberOfIntervals=2000,outputFormat="mat",variableFilter="revolute.[0-9,]+..angle|revolute.[0-9,]+..phi|time",fileNamePrefix="ScalableTestSuite_noopt_ScalableTestSuite.Mechanical.FlexibleBeam.ScaledExperiments.FlexibleBeamModelica_N_16",simflags="-abortSlowSimulation -alarm=240 -emit_protected -lv LOG_STATS") simulate(ScalableTestSuite.Mechanical.FlexibleBeam.ScaledExperiments.FlexibleBeamModelica_N_16,startTime=0,stopTime=0.04,tolerance=3e-08,numberOfIntervals=2000,outputFormat="mat",variableFilter="revolute.[0-9,]+..angle|revolute.[0-9,]+..phi|time",fileNamePrefix="ScalableTestSuite_noopt_ScalableTestSuite.Mechanical.FlexibleBeam.ScaledExperiments.FlexibleBeamModelica_N_16",simflags="-abortSlowSimulation -alarm=240 -emit_protected -lv LOG_STATS") [Timeout 540] "Notification: Performance of FrontEnd - loaded program: time 1.402e-06/1.402e-06, allocations: 0 / 0, free: 0 / 0 Notification: Performance of FrontEnd - Absyn->SCode: time 2.168e-05/2.308e-05, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFInst.instantiate(ScalableTestSuite.Mechanical.FlexibleBeam.ScaledExperiments.FlexibleBeamModelica_N_16): time 0.01382/0.01384, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFInst.instExpressions: time 0.008777/0.02261, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFInst.updateImplicitVariability: time 0.0008344/0.02345, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFTyping.typeComponents: time 0.005047/0.0285, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFTyping.typeBindings: time 0.003892/0.03239, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFTyping.typeClassSections: time 0.001681/0.03407, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFFlatten.flatten: time 0.0379/0.07197, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFFlatten.resolveConnections: time 0.02814/0.1001, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFEvalConstants.evaluate: time 0.02201/0.1221, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFSimplifyModel.simplify: time 0.01697/0.1391, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFPackage.collectConstants: time 0.002389/0.1415, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFFlatten.collectFunctions: time 0.003592/0.1451, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFScalarize.scalarize: time 0.01053/0.1556, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFVerifyModel.verify: time 0.008113/0.1637, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFConvertDAE.convert: time 0.02777/0.1915, allocations: 0 / 0, free: 0 / 0 Notification: Performance of FrontEnd - DAE generated: time 0.00683/0.1983, allocations: 0 / 0, free: 0 / 0 Notification: Performance of FrontEnd: time 3.697e-06/0.1983, allocations: 0 / 0, free: 0 / 0 Notification: Performance of Transformations before backend: time 0.0008377/0.1992, allocations: 0 / 0, free: 0 / 0 Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 5871 * Number of variables: 5871 Notification: Performance of Generate backend data structure: time 0.05854/0.2577, allocations: 0 / 0, free: 0 / 0 Notification: Performance of prepare preOptimizeDAE: time 0.002374/0.2601, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0322/0.2923, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt evaluateParameters (simulation): time 0.04095/0.3332, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.002199/0.3354, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt expandDerOperator (simulation): time 0.007044/0.3425, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt clockPartitioning (simulation): time 0.06508/0.4076, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt findStateOrder (simulation): time 0.001038/0.4086, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.002827/0.4114, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.01058/0.422, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt removeEqualRHS (simulation): time 0.04508/0.4671, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.2036/0.6707, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt comSubExp (simulation): time 0.03875/0.7095, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt resolveLoops (simulation): time 0.008882/0.7184, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt evalFunc (simulation): time 0.09323/0.8116, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0002929/0.8119, allocations: 0 / 0, free: 0 / 0 Notification: Performance of pre-optimization done (n=856): time 5.234e-05/0.8119, allocations: 0 / 0, free: 0 / 0 Notification: Performance of matching and sorting (n=1008): time 0.3649/1.177, allocations: 0 / 0, free: 0 / 0 Notification: Performance of inlineWhenForInitialization (initialization): time 0.0002207/1.177, allocations: 0 / 0, free: 0 / 0 Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.02311/1.2, allocations: 0 / 0, free: 0 / 0 Notification: Performance of collectPreVariables (initialization): time 0.004262/1.204, allocations: 0 / 0, free: 0 / 0 Notification: Performance of collectInitialEqns (initialization): time 0.007114/1.212, allocations: 0 / 0, free: 0 / 0 Notification: Performance of collectInitialBindings (initialization): time 0.007269/1.219, allocations: 0 / 0, free: 0 / 0 Notification: Performance of simplifyInitialFunctions (initialization): time 0.009863/1.229, allocations: 0 / 0, free: 0 / 0 Notification: Performance of setup shared object (initialization): time 3.332e-05/1.229, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preBalanceInitialSystem (initialization): time 0.01126/1.24, allocations: 0 / 0, free: 0 / 0 Notification: Performance of partitionIndependentBlocks (initialization): time 0.01342/1.253, allocations: 0 / 0, free: 0 / 0 Notification: Performance of analyzeInitialSystem (initialization): time 0.01978/1.273, allocations: 0 / 0, free: 0 / 0 Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.0002686/1.273, allocations: 0 / 0, free: 0 / 0 Notification: Performance of matching and sorting (n=2699) (initialization): time 0.05088/1.324, allocations: 0 / 0, free: 0 / 0 Notification: Performance of prepare postOptimizeDAE: time 0.000347/1.325, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0006423/1.325, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt tearingSystem (initialization): time 0.02699/1.352, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.01773/1.37, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.04662/1.417, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.02162/1.438, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.007664/1.446, allocations: 0 / 0, free: 0 / 0 Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 1343 * Number of states: 0 () * Number of discrete variables: 167 (force.arrow.twoHeadedArrow,force.arrow.headAtOrigin,force.color[3],force.color[2],force.color[1],bodybox[15].color[3],bodybox[15].color[2],bodybox[15].color[1],bodybox[15].body.sphereColor[3],bodybox[15].body.sphereColor[2],bodybox[15].body.sphereColor[1],bodybox[14].color[3],bodybox[14].color[2],bodybox[14].color[1],bodybox[14].body.sphereColor[3],bodybox[14].body.sphereColor[2],bodybox[14].body.sphereColor[1],bodybox[13].color[3],bodybox[13].color[2],bodybox[13].color[1],bodybox[13].body.sphereColor[3],bodybox[13].body.sphereColor[2],bodybox[13].body.sphereColor[1],bodybox[12].color[3],bodybox[12].color[2],bodybox[12].color[1],bodybox[12].body.sphereColor[3],bodybox[12].body.sphereColor[2],bodybox[12].body.sphereColor[1],bodybox[11].color[3],bodybox[11].color[2],bodybox[11].color[1],bodybox[11].body.sphereColor[3],bodybox[11].body.sphereColor[2],bodybox[11].body.sphereColor[1],bodybox[10].color[3],bodybox[10].color[2],bodybox[10].color[1],bodybox[10].body.sphereColor[3],bodybox[10].body.sphereColor[2],bodybox[10].body.sphereColor[1],bodybox[9].color[3],bodybox[9].color[2],bodybox[9].color[1],bodybox[9].body.sphereColor[3],bodybox[9].body.sphereColor[2],bodybox[9].body.sphereColor[1],bodybox[8].color[3],bodybox[8].color[2],bodybox[8].color[1],bodybox[8].body.sphereColor[3],bodybox[8].body.sphereColor[2],bodybox[8].body.sphereColor[1],bodybox[7].color[3],bodybox[7].color[2],bodybox[7].color[1],bodybox[7].body.sphereColor[3],bodybox[7].body.sphereColor[2],bodybox[7].body.sphereColor[1],bodybox[6].color[3],bodybox[6].color[2],bodybox[6].color[1],bodybox[6].body.sphereColor[3],bodybox[6].body.sphereColor[2],bodybox[6].body.sphereColor[1],bodybox[5].color[3],bodybox[5].color[2],bodybox[5].color[1],bodybox[5].body.sphereColor[3],bodybox[5].body.sphereColor[2],bodybox[5].body.sphereColor[1],bodybox[4].color[3],bodybox[4].color[2],bodybox[4].color[1],bodybox[4].body.sphereColor[3],bodybox[4].body.sphereColor[2],bodybox[4].body.sphereColor[1],bodybox[3].color[3],bodybox[3].color[2],bodybox[3].color[1],bodybox[3].body.sphereColor[3],bodybox[3].body.sphereColor[2],bodybox[3].body.sphereColor[1],bodybox[2].color[3],bodybox[2].color[2],bodybox[2].color[1],bodybox[2].body.sphereColor[3],bodybox[2].body.sphereColor[2],bodybox[2].body.sphereColor[1],bodybox[1].color[3],bodybox[1].color[2],bodybox[1].color[1],bodybox[1].body.sphereColor[3],bodybox[1].body.sphereColor[2],bodybox[1].body.sphereColor[1],bodyboxN.color[3],bodyboxN.color[2],bodyboxN.color[1],bodyboxN.body.sphereColor[3],bodyboxN.body.sphereColor[2],bodyboxN.body.sphereColor[1],bodybox1.color[3],bodybox1.color[2],bodybox1.color[1],bodybox1.body.sphereColor[3],bodybox1.body.sphereColor[2],bodybox1.body.sphereColor[1],revolute[16].cylinderColor[3],revolute[16].cylinderColor[2],revolute[16].cylinderColor[1],revolute[15].cylinderColor[3],revolute[15].cylinderColor[2],revolute[15].cylinderColor[1],revolute[14].cylinderColor[3],revolute[14].cylinderColor[2],revolute[14].cylinderColor[1],revolute[13].cylinderColor[3],revolute[13].cylinderColor[2],revolute[13].cylinderColor[1],revolute[12].cylinderColor[3],revolute[12].cylinderColor[2],revolute[12].cylinderColor[1],revolute[11].cylinderColor[3],revolute[11].cylinderColor[2],revolute[11].cylinderColor[1],revolute[10].cylinderColor[3],revolute[10].cylinderColor[2],revolute[10].cylinderColor[1],revolute[9].cylinderColor[3],revolute[9].cylinderColor[2],revolute[9].cylinderColor[1],revolute[8].cylinderColor[3],revolute[8].cylinderColor[2],revolute[8].cylinderColor[1],revolute[7].cylinderColor[3],revolute[7].cylinderColor[2],revolute[7].cylinderColor[1],revolute[6].cylinderColor[3],revolute[6].cylinderColor[2],revolute[6].cylinderColor[1],revolute[5].cylinderColor[3],revolute[5].cylinderColor[2],revolute[5].cylinderColor[1],revolute[4].cylinderColor[3],revolute[4].cylinderColor[2],revolute[4].cylinderColor[1],revolute[3].cylinderColor[3],revolute[3].cylinderColor[2],revolute[3].cylinderColor[1],revolute[2].cylinderColor[3],revolute[2].cylinderColor[2],revolute[2].cylinderColor[1],revolute[1].cylinderColor[3],revolute[1].cylinderColor[2],revolute[1].cylinderColor[1],world.axisColor_x[3],world.axisColor_x[2],world.axisColor_x[1],world.groundColor[3],world.groundColor[2],world.groundColor[1],world.gravitySphereColor[3],world.gravitySphereColor[2],world.gravitySphereColor[1],world.gravityArrowColor[3],world.gravityArrowColor[2],world.gravityArrowColor[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (2499): * Single equations (assignments): 2495 * Array equations: 3 * 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): 1 system {(16,161,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.02441/1.47, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt lateInlineFunction (simulation): time 0.009349/1.48, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.05829/1.538, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt inlineArrayEqn (simulation): time 0.0001984/1.538, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt constantLinearSystem (simulation): time 0.0001043/1.538, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0002147/1.538, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.108/1.646, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt simplifyComplexFunction (simulation): time 0.000341/1.647, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.006841/1.654, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt tearingSystem (simulation): time 0.02137/1.675, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.003644/1.679, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.03265/1.711, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 0.0001222/1.711, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt symbolicJacobian (simulation): time 0.04005/1.752, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt removeConstants (simulation): time 0.007447/1.759, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.009509/1.768, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.01192/1.78, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt findZeroCrossings (simulation): time 0.00695/1.787, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.002766/1.79, allocations: 0 / 0, free: 0 / 0 Notification: Performance of sorting global known variables: time 0.01651/1.807, allocations: 0 / 0, free: 0 / 0 Notification: Performance of sort global known variables: time 0.002376/1.809, allocations: 0 / 0, free: 0 / 0 Notification: Performance of remove unused functions: time 0.03791/1.847, allocations: 0 / 0, free: 0 / 0 Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 315 * Number of states: 32 (revolute[1].w,revolute[2].w,revolute[3].w,revolute[4].w,revolute[5].w,revolute[6].w,revolute[7].w,revolute[8].w,revolute[9].w,revolute[10].w,revolute[11].w,revolute[12].w,revolute[13].w,revolute[14].w,revolute[15].w,revolute[16].w,springdamper[1].phi_rel,springdamper[2].phi_rel,springdamper[3].phi_rel,springdamper[4].phi_rel,springdamper[5].phi_rel,springdamper[6].phi_rel,springdamper[7].phi_rel,springdamper[8].phi_rel,springdamper[9].phi_rel,springdamper[10].phi_rel,springdamper[11].phi_rel,springdamper[12].phi_rel,springdamper[13].phi_rel,springdamper[14].phi_rel,springdamper[15].phi_rel,springdamper[16].phi_rel) * 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 (885): * Single equations (assignments): 881 * Array equations: 3 * 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): 1 system {(16,151,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.01425/1.861, allocations: 0 / 0, free: 0 / 0 Notification: Performance of simCode: created initialization part: time 0.04102/1.902, allocations: 0 / 0, free: 0 / 0 Notification: Performance of simCode: created event and clocks part: time 0.0001321/1.902, allocations: 0 / 0, free: 0 / 0 Notification: Performance of simCode: created simulation system equations: time 0.0125/1.915, allocations: 0 / 0, free: 0 / 0 Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.03674/1.952, allocations: 0 / 0, free: 0 / 0 Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.1037/2.055, allocations: 0 / 0, free: 0 / 0 Notification: Performance of simCode: some other stuff during SimCode phase: time 0.01903/2.074, allocations: 0 / 0, free: 0 / 0 Notification: Performance of simCode: alias equations: time 0.01387/2.088, allocations: 0 / 0, free: 0 / 0 Notification: Performance of simCode: all other stuff during SimCode phase: time 0.02183/2.11, allocations: 0 / 0, free: 0 / 0 Notification: Performance of SimCode: time 0.001808/2.112, allocations: 0 / 0, free: 0 / 0 Notification: Performance of Templates: time 0.08985/2.202, allocations: 0 / 0, free: 0 / 0 " [Timeout remaining time 537] diffSimulationResults("ScalableTestSuite_noopt_ScalableTestSuite.Mechanical.FlexibleBeam.ScaledExperiments.FlexibleBeamModelica_N_16_res.mat","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/ReferenceFiles/ScalableTestSuite/ScalableTestSuite.Mechanical.FlexibleBeam.ScaledExperiments.FlexibleBeamModelica_N_16_res.mat","",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 300] "" [Timeout remaining time 300] Reference file matches [Calling sys.exit(0), Time elapsed: 3.808268267195672]