Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Damper2.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo): time 0.0008201/0.0008201, allocations: 80.8 kB / 21.5 MB, free: 2.992 MB / 18.57 MB " [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 0.001975/0.001975, allocations: 169.9 kB / 24.91 MB, free: 9.184 MB / 18.57 MB " [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 1.056/1.056, allocations: 177.1 MB / 205.3 MB, free: 5.488 MB / 186.7 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.0.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.0.0+maint.om/package.mo): time 0.2712/0.2712, allocations: 32.81 MB / 294.6 MB, free: 1.223 MB / 266.7 MB " [Timeout remaining time 180] Using package ModelicaTest with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.0.0+maint.om/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: translateModel(ModelicaTest.MultiBody.Forces.Damper2,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5097,variableFilter="time|heatCapacitor.T|prismatic.s|prismatic.v|prismatic1.s|prismatic1.v|prismatic2.s|prismatic2.v",fileNamePrefix="ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Damper2") translateModel(ModelicaTest.MultiBody.Forces.Damper2,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5097,variableFilter="time|heatCapacitor.T|prismatic.s|prismatic.v|prismatic1.s|prismatic1.v|prismatic2.s|prismatic2.v",fileNamePrefix="ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Damper2") [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 1.633e-06/1.633e-06, allocations: 0 / 323.3 MB, free: 9.621 MB / 298.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 2.173e-05/2.336e-05, allocations: 4.422 kB / 323.3 MB, free: 9.617 MB / 298.7 MB Notification: Performance of NFInst.instantiate(ModelicaTest.MultiBody.Forces.Damper2): time 0.01114/0.01116, allocations: 15.22 MB / 338.5 MB, free: 10.33 MB / 314.7 MB Notification: Performance of NFInst.instExpressions: time 0.00964/0.0208, allocations: 5.129 MB / 343.6 MB, free: 5.184 MB / 314.7 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.002782/0.02358, allocations: 115.5 kB / 343.7 MB, free: 5.07 MB / 314.7 MB Notification: Performance of NFTyping.typeComponents: time 0.006624/0.03021, allocations: 5.459 MB / 349.2 MB, free: 15.59 MB / 330.7 MB Notification: Performance of NFTyping.typeBindings: time 0.005751/0.03596, allocations: 2.623 MB / 351.8 MB, free: 12.96 MB / 330.7 MB Notification: Performance of NFTyping.typeClassSections: time 0.002211/0.03817, allocations: 1.322 MB / 353.1 MB, free: 11.63 MB / 330.7 MB Notification: Performance of NFFlatten.flatten: time 0.007368/0.04554, allocations: 7.762 MB / 360.9 MB, free: 3.863 MB / 330.7 MB Notification: Performance of NFFlatten.resolveConnections: time 0.005665/0.0512, allocations: 5.798 MB / 366.7 MB, free: 13.95 MB / 346.7 MB Notification: Performance of NFEvalConstants.evaluate: time 0.006281/0.05748, allocations: 4.062 MB / 370.8 MB, free: 9.883 MB / 346.7 MB Notification: Performance of NFSimplifyModel.simplify: time 0.005179/0.06266, allocations: 3.823 MB / 374.6 MB, free: 6.051 MB / 346.7 MB Notification: Performance of NFPackage.collectConstants: time 0.001627/0.06429, allocations: 0.5781 MB / 375.2 MB, free: 5.473 MB / 346.7 MB Notification: Performance of NFFlatten.collectFunctions: time 0.003158/0.06745, allocations: 1.26 MB / 376.4 MB, free: 4.211 MB / 346.7 MB Notification: Performance of NFScalarize.scalarize: time 0.003691/0.07114, allocations: 3.452 MB / 379.9 MB, free: 0.75 MB / 346.7 MB Notification: Performance of NFVerifyModel.verify: time 0.003149/0.07429, allocations: 2.197 MB / 382.1 MB, free: 14.54 MB / 362.7 MB Notification: Performance of NFConvertDAE.convert: time 0.008396/0.08268, allocations: 7.169 MB / 389.2 MB, free: 7.348 MB / 362.7 MB Notification: Performance of FrontEnd - DAE generated: time 5.951e-06/0.08269, allocations: 0 / 389.2 MB, free: 7.348 MB / 362.7 MB Notification: Performance of FrontEnd: time 2.134e-06/0.08269, allocations: 7.938 kB / 389.3 MB, free: 7.34 MB / 362.7 MB Notification: Performance of Transformations before backend: time 0.0003122/0.083, allocations: 0 / 389.3 MB, free: 7.34 MB / 362.7 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 2522 * Number of variables: 2522 Notification: Performance of Generate backend data structure: time 0.009431/0.09244, allocations: 7.19 MB / 396.4 MB, free: 76 kB / 362.7 MB Notification: Performance of prepare preOptimizeDAE: time 3.907e-05/0.09247, allocations: 12.03 kB / 396.5 MB, free: 64 kB / 362.7 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004714/0.09719, allocations: 1.753 MB / 398.2 MB, free: 14.31 MB / 378.7 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.00401/0.1012, allocations: 2.745 MB / 401 MB, free: 11.5 MB / 378.7 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002396/0.1014, allocations: 427.3 kB / 401.4 MB, free: 11.09 MB / 378.7 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0008694/0.1023, allocations: 0.5508 MB / 401.9 MB, free: 10.54 MB / 378.7 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01584/0.1181, allocations: 8.851 MB / 410.8 MB, free: 0.5234 MB / 378.7 MB Notification: Performance of preOpt findStateOrder (simulation): time 0.0001673/0.1183, allocations: 71.33 kB / 410.8 MB, free: 464 kB / 378.7 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0006835/0.119, allocations: 267.8 kB / 411.1 MB, free: 196 kB / 378.7 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.00253/0.1215, allocations: 2.795 MB / 413.9 MB, free: 13.39 MB / 394.7 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01285/0.1344, allocations: 4.505 MB / 418.4 MB, free: 8.84 MB / 394.7 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.2285/0.3629, allocations: 49.96 MB / 468.4 MB, free: 71.68 MB / 410.7 MB Notification: Performance of preOpt comSubExp (simulation): time 0.007404/0.3703, allocations: 3.306 MB / 471.7 MB, free: 71.45 MB / 410.7 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.001228/0.3715, allocations: 0.6588 MB / 472.3 MB, free: 71.41 MB / 410.7 MB Notification: Performance of preOpt evalFunc (simulation): time 0.008015/0.3796, allocations: 5.074 MB / 477.4 MB, free: 70.48 MB / 410.7 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.005624/0.3852, allocations: 2.773 MB / 480.2 MB, free: 70.19 MB / 410.7 MB Notification: Performance of pre-optimization done (n=260): time 8.056e-06/0.3852, allocations: 0.8438 kB / 480.2 MB, free: 70.19 MB / 410.7 MB Notification: Performance of matching and sorting (n=294): time 0.02283/0.408, allocations: 10.36 MB / 490.5 MB, free: 62.88 MB / 410.7 MB Notification: Performance of inlineWhenForInitialization (initialization): time 6e-05/0.4081, allocations: 162 kB / 490.7 MB, free: 62.7 MB / 410.7 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.004193/0.4123, allocations: 4.477 MB / 495.2 MB, free: 59.32 MB / 410.7 MB Notification: Performance of collectPreVariables (initialization): time 0.0001802/0.4125, allocations: 72.33 kB / 495.2 MB, free: 59.27 MB / 410.7 MB Notification: Performance of collectInitialEqns (initialization): time 0.002368/0.4148, allocations: 4.805 MB / 0.4883 GB, free: 54.5 MB / 410.7 MB Notification: Performance of collectInitialBindings (initialization): time 0.000681/0.4155, allocations: 1.162 MB / 0.4895 GB, free: 53.33 MB / 410.7 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001235/0.4167, allocations: 1.764 MB / 0.4912 GB, free: 51.55 MB / 410.7 MB Notification: Performance of setup shared object (initialization): time 2.98e-05/0.4168, allocations: 311.1 kB / 0.4915 GB, free: 51.25 MB / 410.7 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001688/0.4185, allocations: 1.114 MB / 0.4926 GB, free: 50.12 MB / 410.7 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002618/0.4211, allocations: 6.614 MB / 0.499 GB, free: 40.8 MB / 410.7 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.005351/0.4264, allocations: 8.591 MB / 0.5074 GB, free: 29.91 MB / 410.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.000132/0.4266, allocations: 56 kB / 0.5075 GB, free: 29.85 MB / 410.7 MB Notification: Performance of matching and sorting (n=1230) (initialization): time 0.008352/0.4349, allocations: 6.198 MB / 0.5135 GB, free: 23.62 MB / 410.7 MB Notification: Performance of prepare postOptimizeDAE: time 0.0001419/0.435, allocations: 117.7 kB / 0.5136 GB, free: 23.5 MB / 410.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0001684/0.4352, allocations: 200 kB / 0.5138 GB, free: 23.3 MB / 410.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.000147/0.4354, allocations: 268 kB / 0.5141 GB, free: 23.04 MB / 410.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004234/0.4396, allocations: 2.324 MB / 0.5164 GB, free: 20.71 MB / 410.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0002381/0.4398, allocations: 398.5 kB / 0.5167 GB, free: 20.32 MB / 410.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004553/0.4444, allocations: 442.3 kB / 0.5172 GB, free: 19.89 MB / 410.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0007222/0.4451, allocations: 484 kB / 0.5176 GB, free: 19.42 MB / 410.7 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 913 * Number of states: 0 () * Number of discrete variables: 83 (trapezoid.count,$PRE.trapezoid.count,trapezoid.T_start,$PRE.trapezoid.T_start,$whenCondition1,force2.forceArrow.twoHeadedArrow,force2.forceArrow.headAtOrigin,force1.forceArrow.twoHeadedArrow,force1.forceArrow.headAtOrigin,force.forceArrow.twoHeadedArrow,force.forceArrow.headAtOrigin,fixedTranslation1.color[3],fixedTranslation1.color[2],fixedTranslation1.color[1],fixedTranslation.color[3],fixedTranslation.color[2],fixedTranslation.color[1],body2.sphereColor[3],body2.sphereColor[2],body2.sphereColor[1],force2.connectionLineColor[3],force2.connectionLineColor[2],force2.connectionLineColor[1],force2.forceColor[3],force2.forceColor[2],force2.forceColor[1],prismatic2.boxColor[3],prismatic2.boxColor[2],prismatic2.boxColor[1],damper2.color_b[3],damper2.color_b[2],damper2.color_b[1],damper2.color_a[3],damper2.color_a[2],damper2.color_a[1],body1.sphereColor[3],body1.sphereColor[2],body1.sphereColor[1],force1.connectionLineColor[3],force1.connectionLineColor[2],force1.connectionLineColor[1],force1.forceColor[3],force1.forceColor[2],force1.forceColor[1],prismatic1.boxColor[3],prismatic1.boxColor[2],prismatic1.boxColor[1],damper1.color_b[3],damper1.color_b[2],damper1.color_b[1],damper1.color_a[3],damper1.color_a[2],damper1.color_a[1],body.sphereColor[3],body.sphereColor[2],body.sphereColor[1],force.connectionLineColor[3],force.connectionLineColor[2],force.connectionLineColor[1],force.forceColor[3],force.forceColor[2],force.forceColor[1],prismatic.boxColor[3],prismatic.boxColor[2],prismatic.boxColor[1],damper.color_b[3],damper.color_b[2],damper.color_b[1],damper.color_a[3],damper.color_a[2],damper.color_a[1],world.gravityArrowColor[3],world.gravityArrowColor[2],world.gravityArrowColor[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]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (1205): * Single equations (assignments): 1201 * Array equations: 3 * Algorithm blocks: 1 * 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 prepare postOptimizeDAE: time 0.002443/0.4476, allocations: 0.9115 MB / 0.5185 GB, free: 18.5 MB / 410.7 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0007101/0.4483, allocations: 343.6 kB / 0.5188 GB, free: 18.17 MB / 410.7 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001434/0.4497, allocations: 1.322 MB / 0.5201 GB, free: 16.83 MB / 410.7 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.427e-05/0.4497, allocations: 31.98 kB / 0.5202 GB, free: 16.8 MB / 410.7 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.031e-06/0.4497, allocations: 7.984 kB / 0.5202 GB, free: 16.79 MB / 410.7 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.521e-05/0.4497, allocations: 15.89 kB / 0.5202 GB, free: 16.78 MB / 410.7 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01049/0.4602, allocations: 7.678 MB / 0.5277 GB, free: 8.504 MB / 410.7 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.473e-05/0.4603, allocations: 32 kB / 0.5277 GB, free: 8.473 MB / 410.7 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001297/0.4616, allocations: 0.6018 MB / 0.5283 GB, free: 7.875 MB / 410.7 MB Notification: Performance of postOpt tearingSystem (simulation): time 2.432e-05/0.4616, allocations: 44 kB / 0.5283 GB, free: 7.832 MB / 410.7 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001426/0.4617, allocations: 87.98 kB / 0.5284 GB, free: 7.746 MB / 410.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 2.417e-05/0.4617, allocations: 63.73 kB / 0.5285 GB, free: 7.684 MB / 410.7 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.617e-05/0.4618, allocations: 55.8 kB / 0.5285 GB, free: 7.629 MB / 410.7 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00276/0.4645, allocations: 3.098 MB / 0.5316 GB, free: 3.883 MB / 410.7 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0009652/0.4655, allocations: 491.4 kB / 0.532 GB, free: 3.402 MB / 410.7 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0004714/0.466, allocations: 99.58 kB / 0.5321 GB, free: 3.309 MB / 410.7 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001058/0.467, allocations: 111.9 kB / 0.5322 GB, free: 3.199 MB / 410.7 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002079/0.4672, allocations: 291.8 kB / 0.5325 GB, free: 2.914 MB / 410.7 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 9.662e-05/0.4673, allocations: 99.98 kB / 0.5326 GB, free: 2.816 MB / 410.7 MB Notification: Performance of sorting global known variables: time 0.001931/0.4693, allocations: 1.848 MB / 0.5344 GB, free: 0.9766 MB / 410.7 MB Notification: Performance of sort global known variables: time 1.9e-07/0.4693, allocations: 0 / 0.5344 GB, free: 0.9766 MB / 410.7 MB Notification: Performance of remove unused functions: time 0.005104/0.4744, allocations: 1.555 MB / 0.5359 GB, free: 15.42 MB / 426.7 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 142 * Number of states: 7 (prismatic.s,prismatic.v,prismatic1.s,prismatic1.v,heatCapacitor.T,prismatic2.s,prismatic2.v) * Number of discrete variables: 3 ($whenCondition1,trapezoid.T_start,trapezoid.count) * Number of discrete states: 1 (trapezoid.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (278): * Single equations (assignments): 273 * Array equations: 3 * Algorithm blocks: 0 * Record equations: 0 * When equations: 2 * 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 0.0004585/0.4748, allocations: 263.9 kB / 0.5362 GB, free: 15.16 MB / 426.7 MB Notification: Performance of simCode: created initialization part: time 0.005277/0.4801, allocations: 3.704 MB / 0.5398 GB, free: 11.45 MB / 426.7 MB Notification: Performance of simCode: created event and clocks part: time 0.0002513/0.4803, allocations: 121 kB / 0.5399 GB, free: 11.32 MB / 426.7 MB Notification: Performance of simCode: created simulation system equations: time 0.0009132/0.4813, allocations: 0.726 MB / 0.5406 GB, free: 10.6 MB / 426.7 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002915/0.4842, allocations: 0.6775 MB / 0.5413 GB, free: 9.957 MB / 426.7 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0196/0.5038, allocations: 12.62 MB / 0.5536 GB, free: 12.79 MB / 442.7 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.002798/0.5066, allocations: 1.943 MB / 0.5555 GB, free: 10.82 MB / 442.7 MB Notification: Performance of simCode: alias equations: time 0.002742/0.5093, allocations: 0.7676 MB / 0.5563 GB, free: 10.05 MB / 442.7 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001583/0.5109, allocations: 0.837 MB / 0.5571 GB, free: 9.219 MB / 442.7 MB Notification: Performance of SimCode: time 2.735e-06/0.5109, allocations: 0 / 0.5571 GB, free: 9.219 MB / 442.7 MB Notification: Performance of Templates: time 0.07117/0.5821, allocations: 40.35 MB / 0.5965 GB, free: 1.371 MB / 474.7 MB " [Timeout remaining time 659] make -j1 -f ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Damper2.makefile [Timeout 660] (rm -f ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Damper2.pipe ; mkfifo ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Damper2.pipe ; head -c 1048576 < ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Damper2.pipe >> ../files/ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Damper2.sim & ./ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Damper2 -abortSlowSimulation -alarm=240 -s gbode -gbm=radauIIA3 -emit_protected -lv LOG_STATS > ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Damper2.pipe 2>&1) [Timeout 240] diffSimulationResults("ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Damper2_res.mat","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/Reference-modelica.org/ReferenceResults/MAP-LIB_ReferenceResults/v4.0.0/ModelicaTest/MultiBody/Forces/Damper2/Damper2.csv","",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 660] "" [Timeout remaining time 660] Reference file matches [Calling sys.exit(0), Time elapsed: 4.684528377838433]