Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ModelicaTest_4.1.0_ModelicaTest.MultiBody.Joints.FreeMotion2.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 0.001873/0.001873, allocations: 91.61 kB / 20.96 MB, free: 3.457 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 0.001994/0.001994, allocations: 165.3 kB / 24.27 MB, free: 148 kB / 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 1.605/1.605, allocations: 177.1 MB / 204.6 MB, free: 5.578 MB / 186.7 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.1.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.1.0+maint.om/package.mo): time 0.3807/0.3807, allocations: 34.27 MB / 295.3 MB, free: 0.6641 MB / 266.7 MB " [Timeout remaining time 179] Using package ModelicaTest with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.1.0+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.Joints.FreeMotion2,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5002,variableFilter="time|freeMotion.r_rel_a.1.|freeMotion.v_rel_a.1.|prismatic1.s|prismatic1.v|universal.phi_a|universal.phi_b|universal.w_a|universal.w_b|universal1.phi_a|universal1.phi_b|universal1.w_a|universal1.w_b",fileNamePrefix="ModelicaTest_4.1.0_ModelicaTest.MultiBody.Joints.FreeMotion2") translateModel(ModelicaTest.MultiBody.Joints.FreeMotion2,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5002,variableFilter="time|freeMotion.r_rel_a.1.|freeMotion.v_rel_a.1.|prismatic1.s|prismatic1.v|universal.phi_a|universal.phi_b|universal.w_a|universal.w_b|universal1.phi_a|universal1.phi_b|universal1.w_a|universal1.w_b",fileNamePrefix="ModelicaTest_4.1.0_ModelicaTest.MultiBody.Joints.FreeMotion2") [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 2.064e-06/2.064e-06, allocations: 0 / 377.3 MB, free: 2.93 MB / 346.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 3.738e-05/3.944e-05, allocations: 2.312 kB / 377.3 MB, free: 2.926 MB / 346.7 MB Notification: Performance of NFInst.instantiate(ModelicaTest.MultiBody.Joints.FreeMotion2): time 0.03033/0.03036, allocations: 14.12 MB / 391.4 MB, free: 4.734 MB / 362.7 MB Notification: Performance of NFInst.instExpressions: time 0.01699/0.04735, allocations: 4.91 MB / 396.3 MB, free: 15.81 MB / 378.7 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.003161/0.05052, allocations: 123.4 kB / 396.5 MB, free: 15.69 MB / 378.7 MB Notification: Performance of NFTyping.typeComponents: time 0.01331/0.06383, allocations: 4.447 MB / 400.9 MB, free: 11.23 MB / 378.7 MB Notification: Performance of NFTyping.typeBindings: time 0.0094/0.07323, allocations: 2.464 MB / 403.4 MB, free: 8.75 MB / 378.7 MB Notification: Performance of NFTyping.typeClassSections: time 0.004249/0.07748, allocations: 1.185 MB / 404.5 MB, free: 7.562 MB / 378.7 MB Notification: Performance of NFFlatten.flatten: time 0.01737/0.09485, allocations: 8.239 MB / 412.8 MB, free: 15.31 MB / 394.7 MB Notification: Performance of NFFlatten.resolveConnections: time 0.01122/0.1061, allocations: 4.959 MB / 417.7 MB, free: 10.29 MB / 394.7 MB Notification: Performance of NFEvalConstants.evaluate: time 0.01035/0.1164, allocations: 3.536 MB / 421.3 MB, free: 6.742 MB / 394.7 MB Notification: Performance of NFSimplifyModel.simplify: time 0.009037/0.1255, allocations: 3.527 MB / 424.8 MB, free: 3.207 MB / 394.7 MB Notification: Performance of NFPackage.collectConstants: time 0.002189/0.1276, allocations: 0.5 MB / 425.3 MB, free: 2.707 MB / 394.7 MB Notification: Performance of NFFlatten.collectFunctions: time 0.004936/0.1326, allocations: 1.334 MB / 426.6 MB, free: 1.371 MB / 394.7 MB Notification: Performance of NFScalarize.scalarize: time 0.004501/0.1371, allocations: 2.965 MB / 429.6 MB, free: 14.4 MB / 410.7 MB Notification: Performance of NFVerifyModel.verify: time 0.004697/0.1418, allocations: 1.877 MB / 431.5 MB, free: 12.52 MB / 410.7 MB Notification: Performance of NFConvertDAE.convert: time 0.01555/0.1573, allocations: 9.969 MB / 441.5 MB, free: 2.516 MB / 410.7 MB Notification: Performance of FrontEnd - DAE generated: time 5.861e-06/0.1573, allocations: 0 / 441.5 MB, free: 2.516 MB / 410.7 MB Notification: Performance of FrontEnd: time 1.723e-06/0.1573, allocations: 0 / 441.5 MB, free: 2.516 MB / 410.7 MB Notification: Performance of Transformations before backend: time 0.000326/0.1577, allocations: 4 kB / 441.5 MB, free: 2.512 MB / 410.7 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 1953 * Number of variables: 1953 Notification: Performance of Generate backend data structure: time 0.1818/0.3395, allocations: 8.121 MB / 449.6 MB, free: 97.34 MB / 410.7 MB Notification: Performance of prepare preOptimizeDAE: time 4.696e-05/0.3395, allocations: 8.531 kB / 449.6 MB, free: 97.34 MB / 410.7 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.03009/0.3696, allocations: 3.959 MB / 453.5 MB, free: 96.67 MB / 410.7 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01219/0.3818, allocations: 4.057 MB / 457.6 MB, free: 95.29 MB / 410.7 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003267/0.3821, allocations: 327 kB / 457.9 MB, free: 95.18 MB / 410.7 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.002118/0.3843, allocations: 451 kB / 458.4 MB, free: 95.05 MB / 410.7 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.02064/0.4049, allocations: 8.626 MB / 467 MB, free: 89.9 MB / 410.7 MB Notification: Performance of preOpt findStateOrder (simulation): time 0.0002419/0.4051, allocations: 63.94 kB / 467 MB, free: 89.87 MB / 410.7 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.00079/0.4059, allocations: 206.2 kB / 467.3 MB, free: 89.77 MB / 410.7 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.004197/0.4101, allocations: 2.525 MB / 469.8 MB, free: 89.32 MB / 410.7 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01715/0.4273, allocations: 4.852 MB / 474.6 MB, free: 88.43 MB / 410.7 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.07648/0.5038, allocations: 60.96 MB / 0.523 GB, free: 33.61 MB / 410.7 MB Notification: Performance of preOpt comSubExp (simulation): time 0.01073/0.5145, allocations: 2.858 MB / 0.5258 GB, free: 30.7 MB / 410.7 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.002404/0.5169, allocations: 1.024 MB / 0.5268 GB, free: 29.66 MB / 410.7 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0005791/0.5175, allocations: 230.4 kB / 0.527 GB, free: 29.44 MB / 410.7 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.01e-05/0.5175, allocations: 71.33 kB / 0.5271 GB, free: 29.36 MB / 410.7 MB Notification: Performance of pre-optimization done (n=245): time 5.72e-06/0.5175, allocations: 3.938 kB / 0.5271 GB, free: 29.35 MB / 410.7 MB Notification: Performance of matching and sorting (n=315): time 0.08508/0.6026, allocations: 24.92 MB / 0.5514 GB, free: 4.422 MB / 410.7 MB Notification: Performance of inlineWhenForInitialization (initialization): time 9.138e-05/0.6027, allocations: 269.3 kB / 0.5517 GB, free: 4.102 MB / 410.7 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.00717/0.6099, allocations: 5.516 MB / 0.5571 GB, free: 14.55 MB / 426.7 MB Notification: Performance of collectPreVariables (initialization): time 0.0007746/0.6106, allocations: 69.7 kB / 0.5572 GB, free: 14.47 MB / 426.7 MB Notification: Performance of collectInitialEqns (initialization): time 0.004813/0.6155, allocations: 4.481 MB / 0.5615 GB, free: 9.957 MB / 426.7 MB Notification: Performance of collectInitialBindings (initialization): time 0.002479/0.6179, allocations: 1.354 MB / 0.5629 GB, free: 8.594 MB / 426.7 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.003683/0.6216, allocations: 2 MB / 0.5648 GB, free: 6.582 MB / 426.7 MB Notification: Performance of setup shared object (initialization): time 0.0002295/0.6218, allocations: 476.8 kB / 0.5653 GB, free: 6.113 MB / 426.7 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.003089/0.6249, allocations: 1.226 MB / 0.5665 GB, free: 4.883 MB / 426.7 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0102/0.6351, allocations: 7.771 MB / 0.574 GB, free: 10.29 MB / 442.7 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.01564/0.6508, allocations: 9.91 MB / 0.5837 GB, free: 13.59 MB / 458.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.0002039/0.651, allocations: 43.94 kB / 0.5838 GB, free: 13.54 MB / 458.7 MB Notification: Performance of matching and sorting (n=1024) (initialization): time 0.02462/0.6756, allocations: 8.497 MB / 0.5921 GB, free: 4.992 MB / 458.7 MB Notification: Performance of prepare postOptimizeDAE: time 0.0001343/0.6757, allocations: 68 kB / 0.5921 GB, free: 4.926 MB / 458.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.000226/0.676, allocations: 140 kB / 0.5923 GB, free: 4.789 MB / 458.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.007936/0.6839, allocations: 1.797 MB / 0.594 GB, free: 2.984 MB / 458.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.007583/0.6915, allocations: 1.778 MB / 0.5958 GB, free: 1.203 MB / 458.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0198/0.7113, allocations: 8.694 MB / 0.6042 GB, free: 8.266 MB / 474.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.007997/0.7193, allocations: 0.5539 MB / 0.6048 GB, free: 7.711 MB / 474.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.002041/0.7213, allocations: 455.9 kB / 0.6052 GB, free: 7.266 MB / 474.7 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 656 * Number of states: 0 () * Number of discrete variables: 44 (freeMotion.arrow.twoHeadedArrow,freeMotion.arrow.headAtOrigin,universal1.cylinderColor[3],universal1.cylinderColor[2],universal1.cylinderColor[1],prismatic1.boxColor[3],prismatic1.boxColor[2],prismatic1.boxColor[1],bodyBox1.color[3],bodyBox1.color[2],bodyBox1.color[1],bodyBox1.body.sphereColor[3],bodyBox1.body.sphereColor[2],bodyBox1.body.sphereColor[1],universal.cylinderColor[3],universal.cylinderColor[2],universal.cylinderColor[1],prismatic.boxColor[3],prismatic.boxColor[2],prismatic.boxColor[1],bodyBox.color[3],bodyBox.color[2],bodyBox.color[1],bodyBox.body.sphereColor[3],bodyBox.body.sphereColor[2],bodyBox.body.sphereColor[1],fixed.color[3],fixed.color[2],fixed.color[1],freeMotion.arrowColor[3],freeMotion.arrowColor[2],freeMotion.arrowColor[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 (948): * Single equations (assignments): 943 * Array equations: 3 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(3,24,100.0%), (3,24,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.004188/0.7255, allocations: 0.8848 MB / 0.6061 GB, free: 6.363 MB / 474.7 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.00206/0.7276, allocations: 0.5361 MB / 0.6066 GB, free: 5.824 MB / 474.7 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01309/0.7406, allocations: 4.046 MB / 0.6106 GB, free: 1.707 MB / 474.7 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.469e-05/0.7407, allocations: 32 kB / 0.6106 GB, free: 1.676 MB / 474.7 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.704e-05/0.7408, allocations: 12 kB / 0.6106 GB, free: 1.664 MB / 474.7 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 7.477e-05/0.7408, allocations: 19.88 kB / 0.6106 GB, free: 1.645 MB / 474.7 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.2428/0.9836, allocations: 11.78 MB / 0.6221 GB, free: 133.8 MB / 474.7 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.611e-05/0.9837, allocations: 10.75 kB / 0.6221 GB, free: 133.8 MB / 474.7 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002343/0.986, allocations: 0.491 MB / 0.6226 GB, free: 133.8 MB / 474.7 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.006083/0.9921, allocations: 1.577 MB / 0.6241 GB, free: 133.7 MB / 474.7 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.000527/0.9926, allocations: 64.02 kB / 0.6242 GB, free: 133.7 MB / 474.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.01161/1.004, allocations: 7.344 MB / 0.6314 GB, free: 130 MB / 474.7 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 7.094e-06/1.004, allocations: 10.34 kB / 0.6314 GB, free: 129.9 MB / 474.7 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01332/1.018, allocations: 5.758 MB / 0.637 GB, free: 128 MB / 474.7 MB Notification: Performance of postOpt removeConstants (simulation): time 0.002371/1.02, allocations: 480.5 kB / 0.6375 GB, free: 127.9 MB / 474.7 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0009841/1.021, allocations: 58.19 kB / 0.6375 GB, free: 127.9 MB / 474.7 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002998/1.024, allocations: 300.2 kB / 0.6378 GB, free: 127.8 MB / 474.7 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0006723/1.025, allocations: 215.3 kB / 0.638 GB, free: 127.8 MB / 474.7 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0002358/1.025, allocations: 88.58 kB / 0.6381 GB, free: 127.8 MB / 474.7 MB Notification: Performance of sorting global known variables: time 0.003633/1.028, allocations: 2.31 MB / 0.6404 GB, free: 127 MB / 474.7 MB Notification: Performance of sort global known variables: time 9e-08/1.028, allocations: 0 / 0.6404 GB, free: 127 MB / 474.7 MB Notification: Performance of remove unused functions: time 0.00741/1.036, allocations: 1.71 MB / 0.642 GB, free: 126.8 MB / 474.7 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 28 * Number of states: 12 (freeMotion.r_rel_a[1],freeMotion.v_rel_a[1],universal.phi_a,universal.phi_b,universal.w_a,universal.w_b,prismatic1.s,prismatic1.v,universal1.phi_a,universal1.phi_b,universal1.w_a,universal1.w_b) * 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 (253): * Single equations (assignments): 248 * Array equations: 3 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(3,21,100.0%), (3,21,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0007916/1.037, allocations: 226.8 kB / 0.6422 GB, free: 126.6 MB / 474.7 MB Notification: Performance of simCode: created initialization part: time 0.01237/1.049, allocations: 5.347 MB / 0.6475 GB, free: 124.8 MB / 474.7 MB Notification: Performance of simCode: created event and clocks part: time 1.779e-05/1.049, allocations: 1.469 kB / 0.6475 GB, free: 124.8 MB / 474.7 MB Notification: Performance of simCode: created simulation system equations: time 0.004605/1.054, allocations: 2.065 MB / 0.6495 GB, free: 124 MB / 474.7 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004844/1.058, allocations: 0.6107 MB / 0.6501 GB, free: 123.8 MB / 474.7 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0233/1.082, allocations: 11.74 MB / 0.6615 GB, free: 118 MB / 474.7 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.006013/1.088, allocations: 3.448 MB / 0.6649 GB, free: 116.9 MB / 474.7 MB Notification: Performance of simCode: alias equations: time 0.005439/1.093, allocations: 2.006 MB / 0.6669 GB, free: 116.4 MB / 474.7 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001241/1.094, allocations: 334.7 kB / 0.6672 GB, free: 116.1 MB / 474.7 MB Notification: Performance of SimCode: time 2.044e-06/1.094, allocations: 0 / 0.6672 GB, free: 116.1 MB / 474.7 MB Notification: Performance of Templates: time 0.09623/1.191, allocations: 63.95 MB / 0.7296 GB, free: 55.08 MB / 474.7 MB " [Timeout remaining time 659] make -j1 -f ModelicaTest_4.1.0_ModelicaTest.MultiBody.Joints.FreeMotion2.makefile [Timeout 660] (rm -f ModelicaTest_4.1.0_ModelicaTest.MultiBody.Joints.FreeMotion2.pipe ; mkfifo ModelicaTest_4.1.0_ModelicaTest.MultiBody.Joints.FreeMotion2.pipe ; head -c 1048576 < ModelicaTest_4.1.0_ModelicaTest.MultiBody.Joints.FreeMotion2.pipe >> ../files/ModelicaTest_4.1.0_ModelicaTest.MultiBody.Joints.FreeMotion2.sim & ./ModelicaTest_4.1.0_ModelicaTest.MultiBody.Joints.FreeMotion2 -abortSlowSimulation -alarm=240 -emit_protected -lv LOG_STATS > ModelicaTest_4.1.0_ModelicaTest.MultiBody.Joints.FreeMotion2.pipe 2>&1) [Timeout 240] diffSimulationResults("ModelicaTest_4.1.0_ModelicaTest.MultiBody.Joints.FreeMotion2_res.mat","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/Reference-modelica.org/ReferenceResults/MAP-LIB_ReferenceResults/v4.1.0/ModelicaTest/MultiBody/Joints/FreeMotion2/FreeMotion2.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/ModelicaTest_4.1.0_ModelicaTest.MultiBody.Joints.FreeMotion2.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 660] "" [Timeout remaining time 660] Reference file matches [Calling sys.exit(0), Time elapsed: 8.347726994077675]