Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ModelicaTest_trunk_ModelicaTest.MultiBody.Parts.Rotor1D.Bevel1D.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices trunk/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices trunk/package.mo): time 0.001476/0.001476, allocations: 109 kB / 21.23 MB, free: 0.6641 MB / 14.72 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex trunk/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex trunk/package.mo): time 0.001563/0.001563, allocations: 213.9 kB / 24.54 MB, free: 4.02 MB / 14.72 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica trunk/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica trunk/package.mo): time 1.463/1.463, allocations: 230.3 MB / 258 MB, free: 8.219 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest trunk/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest trunk/package.mo): time 0.249/0.249, allocations: 46.89 MB / 361.3 MB, free: 4.438 MB / 286.1 MB " [Timeout remaining time 179] Using package ModelicaTest with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest trunk/package.mo) Using package Modelica with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica trunk/package.mo) Using package Complex with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex trunk/package.mo) Using package ModelicaServices with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices trunk/package.mo) Running command: translateModel(ModelicaTest.MultiBody.Parts.Rotor1D.Bevel1D,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5002,variableFilter="time|gearConstraint.actuatedRevolute_b.phi|gearConstraint.actuatedRevolute_b.w|inertia2.phi|inertia2.w",fileNamePrefix="ModelicaTest_trunk_ModelicaTest.MultiBody.Parts.Rotor1D.Bevel1D") translateModel(ModelicaTest.MultiBody.Parts.Rotor1D.Bevel1D,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5002,variableFilter="time|gearConstraint.actuatedRevolute_b.phi|gearConstraint.actuatedRevolute_b.w|inertia2.phi|inertia2.w",fileNamePrefix="ModelicaTest_trunk_ModelicaTest.MultiBody.Parts.Rotor1D.Bevel1D") [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 0.002441/0.002441, allocations: 75.88 kB / 0.4971 GB, free: 7.578 MB / 366.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3568/0.3593, allocations: 66.02 MB / 0.5615 GB, free: 4.594 MB / 398.1 MB Notification: Performance of NFInst.instantiate(ModelicaTest.MultiBody.Parts.Rotor1D.Bevel1D): time 0.01753/0.3768, allocations: 13.52 MB / 0.5747 GB, free: 7.016 MB / 414.1 MB Notification: Performance of NFInst.instExpressions: time 0.01151/0.3883, allocations: 4.575 MB / 0.5792 GB, free: 2.426 MB / 414.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.003301/0.3916, allocations: 107.4 kB / 0.5793 GB, free: 2.32 MB / 414.1 MB Notification: Performance of NFTyping.typeComponents: time 0.009543/0.4012, allocations: 4.244 MB / 0.5835 GB, free: 14.06 MB / 430.1 MB Notification: Performance of NFTyping.typeBindings: time 0.007421/0.4086, allocations: 2.195 MB / 0.5856 GB, free: 11.86 MB / 430.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.002789/0.4114, allocations: 0.9243 MB / 0.5865 GB, free: 10.93 MB / 430.1 MB Notification: Performance of NFFlatten.flatten: time 0.01037/0.4217, allocations: 6.089 MB / 0.5924 GB, free: 4.836 MB / 430.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.006588/0.4283, allocations: 3.697 MB / 0.5961 GB, free: 1.07 MB / 430.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.004134/0.4325, allocations: 2.13 MB / 0.5981 GB, free: 14.93 MB / 446.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.004993/0.4375, allocations: 3.03 MB / 0.6011 GB, free: 11.89 MB / 446.1 MB Notification: Performance of NFPackage.collectConstants: time 0.001521/0.439, allocations: 468 kB / 0.6015 GB, free: 11.44 MB / 446.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.003295/0.4423, allocations: 1.377 MB / 0.6029 GB, free: 10.06 MB / 446.1 MB Notification: Performance of NFScalarize.scalarize: time 0.003592/0.4459, allocations: 2.556 MB / 0.6054 GB, free: 7.496 MB / 446.1 MB Notification: Performance of NFVerifyModel.verify: time 0.004912/0.4508, allocations: 2.832 MB / 0.6081 GB, free: 4.648 MB / 446.1 MB Notification: Performance of NFConvertDAE.convert: time 0.01258/0.4634, allocations: 9.04 MB / 0.617 GB, free: 11.57 MB / 462.1 MB Notification: Performance of FrontEnd - DAE generated: time 1.13e-05/0.4634, allocations: 4 kB / 0.617 GB, free: 11.57 MB / 462.1 MB Notification: Performance of FrontEnd: time 1.803e-06/0.4634, allocations: 0 / 0.617 GB, free: 11.57 MB / 462.1 MB Notification: Performance of Transformations before backend: time 0.0003387/0.4637, allocations: 4 kB / 0.617 GB, free: 11.56 MB / 462.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 1722 * Number of variables: 1722 Notification: Performance of Generate backend data structure: time 0.01879/0.4825, allocations: 6.143 MB / 0.623 GB, free: 5.355 MB / 462.1 MB Notification: Performance of prepare preOptimizeDAE: time 5.314e-05/0.4826, allocations: 8.031 kB / 0.623 GB, free: 5.348 MB / 462.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01334/0.4959, allocations: 2.603 MB / 0.6255 GB, free: 2.738 MB / 462.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01016/0.5061, allocations: 3.739 MB / 0.6292 GB, free: 14.95 MB / 478.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.000317/0.5064, allocations: 296 kB / 0.6295 GB, free: 14.66 MB / 478.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.001602/0.508, allocations: 407.9 kB / 0.6299 GB, free: 14.27 MB / 478.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.02469/0.5327, allocations: 11.28 MB / 0.6409 GB, free: 2.234 MB / 478.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 0.0005769/0.5332, allocations: 59.58 kB / 0.6409 GB, free: 2.176 MB / 478.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.00249/0.5357, allocations: 183.9 kB / 0.6411 GB, free: 1.996 MB / 478.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.004423/0.5402, allocations: 2.026 MB / 0.6431 GB, free: 15.96 MB / 494.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.02267/0.5628, allocations: 9.537 MB / 0.6524 GB, free: 6.406 MB / 494.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.06773/0.6306, allocations: 44.84 MB / 0.6962 GB, free: 8.195 MB / 0.5294 GB Notification: Performance of preOpt comSubExp (simulation): time 0.01113/0.6417, allocations: 3.538 MB / 0.6996 GB, free: 4.621 MB / 0.5294 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.003497/0.6452, allocations: 2.179 MB / 0.7018 GB, free: 2.43 MB / 0.5294 GB Notification: Performance of preOpt evalFunc (simulation): time 0.01863/0.6638, allocations: 8.903 MB / 0.7105 GB, free: 9.484 MB / 0.545 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.93e-05/0.6639, allocations: 55.56 kB / 0.7105 GB, free: 9.418 MB / 0.545 GB Notification: Performance of pre-optimization done (n=169): time 4.799e-06/0.6639, allocations: 0 / 0.7105 GB, free: 9.418 MB / 0.545 GB Notification: Performance of matching and sorting (n=191): time 0.0627/0.7266, allocations: 19.34 MB / 0.7294 GB, free: 6.031 MB / 0.5606 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001379/0.7267, allocations: 205.2 kB / 0.7296 GB, free: 5.789 MB / 0.5606 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.01062/0.7373, allocations: 4.698 MB / 0.7342 GB, free: 1.082 MB / 0.5606 GB Notification: Performance of collectPreVariables (initialization): time 0.0006595/0.738, allocations: 57.7 kB / 0.7342 GB, free: 1.02 MB / 0.5606 GB Notification: Performance of collectInitialEqns (initialization): time 0.3134/1.051, allocations: 3.681 MB / 0.7378 GB, free: 154.6 MB / 0.5606 GB Notification: Performance of collectInitialBindings (initialization): time 0.001154/1.053, allocations: 0.7729 MB / 0.7386 GB, free: 154.2 MB / 0.5606 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.002487/1.055, allocations: 1.334 MB / 0.7399 GB, free: 153.8 MB / 0.5606 GB Notification: Performance of setup shared object (initialization): time 5.483e-05/1.055, allocations: 302.7 kB / 0.7402 GB, free: 153.5 MB / 0.5606 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.003204/1.058, allocations: 2.38 MB / 0.7425 GB, free: 152.7 MB / 0.5606 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.004317/1.063, allocations: 6.213 MB / 0.7486 GB, free: 146.8 MB / 0.5606 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.008272/1.071, allocations: 9.221 MB / 0.7576 GB, free: 139.1 MB / 0.5606 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.0001246/1.071, allocations: 41.31 kB / 0.7576 GB, free: 139.1 MB / 0.5606 GB Notification: Performance of matching and sorting (n=847) (initialization): time 0.01705/1.088, allocations: 9.704 MB / 0.7671 GB, free: 133.3 MB / 0.5606 GB Notification: Performance of prepare postOptimizeDAE: time 9.166e-05/1.088, allocations: 64 kB / 0.7672 GB, free: 133.2 MB / 0.5606 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0001257/1.088, allocations: 132 kB / 0.7673 GB, free: 133.1 MB / 0.5606 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.004104/1.092, allocations: 1.603 MB / 0.7688 GB, free: 131.9 MB / 0.5606 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00438/1.097, allocations: 1.466 MB / 0.7703 GB, free: 130.5 MB / 0.5606 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0105/1.107, allocations: 9.796 MB / 0.7798 GB, free: 120.5 MB / 0.5606 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.005221/1.112, allocations: 362.3 kB / 0.7802 GB, free: 120.2 MB / 0.5606 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0009859/1.113, allocations: 394.9 kB / 0.7806 GB, free: 119.8 MB / 0.5606 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 612 * Number of states: 0 () * Number of discrete variables: 47 (torque1.torqueArrow.twoHeadedArrow,torque1.torqueArrow.headAtOrigin,fixed.color[3],fixed.color[2],fixed.color[1],torque1.connectionLineColor[3],torque1.connectionLineColor[2],torque1.connectionLineColor[1],torque1.torqueColor[3],torque1.torqueColor[2],torque1.torqueColor[1],cyl2.color[3],cyl2.color[2],cyl2.color[1],cyl2.body.sphereColor[3],cyl2.body.sphereColor[2],cyl2.body.sphereColor[1],cyl1.color[3],cyl1.color[2],cyl1.color[1],cyl1.body.sphereColor[3],cyl1.body.sphereColor[2],cyl1.body.sphereColor[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],gearConstraint.fixedTranslation2.color[3],gearConstraint.fixedTranslation2.color[2],gearConstraint.fixedTranslation2.color[1],gearConstraint.fixedTranslation1.color[3],gearConstraint.fixedTranslation1.color[2],gearConstraint.fixedTranslation1.color[1],gearConstraint.actuatedRevolute_b.cylinderColor[3],gearConstraint.actuatedRevolute_b.cylinderColor[2],gearConstraint.actuatedRevolute_b.cylinderColor[1],gearConstraint.actuatedRevolute_a.cylinderColor[3],gearConstraint.actuatedRevolute_a.cylinderColor[2],gearConstraint.actuatedRevolute_a.cylinderColor[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (787): * Single equations (assignments): 782 * 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 {(3,31,77.8%), (1,3,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.004022/1.117, allocations: 2.443 MB / 0.783 GB, free: 117.4 MB / 0.5606 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0009202/1.118, allocations: 425.1 kB / 0.7834 GB, free: 117 MB / 0.5606 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.007465/1.126, allocations: 4.156 MB / 0.7874 GB, free: 112.8 MB / 0.5606 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.302e-05/1.126, allocations: 21.36 kB / 0.7874 GB, free: 112.8 MB / 0.5606 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.021e-05/1.126, allocations: 15.88 kB / 0.7875 GB, free: 112.8 MB / 0.5606 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.811e-05/1.126, allocations: 7.969 kB / 0.7875 GB, free: 112.8 MB / 0.5606 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01684/1.143, allocations: 9.463 MB / 0.7967 GB, free: 103.3 MB / 0.5606 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.725e-05/1.143, allocations: 0 / 0.7967 GB, free: 103.3 MB / 0.5606 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.00143/1.144, allocations: 295.6 kB / 0.797 GB, free: 103 MB / 0.5606 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.003735/1.148, allocations: 1.351 MB / 0.7983 GB, free: 101.6 MB / 0.5606 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001976/1.148, allocations: 35.94 kB / 0.7983 GB, free: 101.6 MB / 0.5606 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.01025/1.158, allocations: 9.192 MB / 0.8073 GB, free: 92.2 MB / 0.5606 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.445e-06/1.158, allocations: 0 / 0.8073 GB, free: 92.2 MB / 0.5606 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.009918/1.168, allocations: 6.877 MB / 0.814 GB, free: 85.29 MB / 0.5606 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001733/1.17, allocations: 399.3 kB / 0.8144 GB, free: 84.91 MB / 0.5606 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001268/1.171, allocations: 31.98 kB / 0.8144 GB, free: 84.88 MB / 0.5606 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002184/1.174, allocations: 119.8 kB / 0.8146 GB, free: 84.76 MB / 0.5606 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0003903/1.174, allocations: 121.2 kB / 0.8147 GB, free: 84.64 MB / 0.5606 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.000144/1.174, allocations: 51.98 kB / 0.8147 GB, free: 84.59 MB / 0.5606 GB Notification: Performance of sorting global known variables: time 0.004799/1.179, allocations: 2.96 MB / 0.8176 GB, free: 81.64 MB / 0.5606 GB Notification: Performance of sort global known variables: time 1.3e-07/1.179, allocations: 0 / 0.8176 GB, free: 81.64 MB / 0.5606 GB Notification: Performance of remove unused functions: time 0.00723/1.186, allocations: 1.172 MB / 0.8188 GB, free: 80.47 MB / 0.5606 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * Number of states: 4 (gearConstraint.actuatedRevolute_b.phi,gearConstraint.actuatedRevolute_b.w,inertia1.phi,inertia1.w) * 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 (141): * Single equations (assignments): 136 * 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 {(1,27,100.0%), (1,3,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0006264/1.187, allocations: 169.1 kB / 0.8189 GB, free: 80.31 MB / 0.5606 GB Notification: Performance of simCode: created initialization part: time 0.00906/1.196, allocations: 5.667 MB / 0.8244 GB, free: 74.64 MB / 0.5606 GB Notification: Performance of simCode: created event and clocks part: time 4.709e-06/1.196, allocations: 0 / 0.8244 GB, free: 74.64 MB / 0.5606 GB Notification: Performance of simCode: created simulation system equations: time 0.002763/1.199, allocations: 1.853 MB / 0.8263 GB, free: 72.77 MB / 0.5606 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003836/1.202, allocations: 0.5287 MB / 0.8268 GB, free: 72.24 MB / 0.5606 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01896/1.221, allocations: 11.23 MB / 0.8377 GB, free: 60.98 MB / 0.5606 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.005842/1.227, allocations: 3.814 MB / 0.8415 GB, free: 57.13 MB / 0.5606 GB Notification: Performance of simCode: alias equations: time 0.005489/1.233, allocations: 1.98 MB / 0.8434 GB, free: 55.15 MB / 0.5606 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001107/1.234, allocations: 271.4 kB / 0.8437 GB, free: 54.88 MB / 0.5606 GB Notification: Performance of SimCode: time 2.775e-06/1.234, allocations: 0 / 0.8437 GB, free: 54.88 MB / 0.5606 GB Notification: Performance of Templates: time 0.07765/1.311, allocations: 46.34 MB / 0.8889 GB, free: 8.844 MB / 0.5606 GB " [Timeout remaining time 659] make -j1 -f ModelicaTest_trunk_ModelicaTest.MultiBody.Parts.Rotor1D.Bevel1D.makefile [Timeout 660] (rm -f ModelicaTest_trunk_ModelicaTest.MultiBody.Parts.Rotor1D.Bevel1D.pipe ; mkfifo ModelicaTest_trunk_ModelicaTest.MultiBody.Parts.Rotor1D.Bevel1D.pipe ; head -c 1048576 < ModelicaTest_trunk_ModelicaTest.MultiBody.Parts.Rotor1D.Bevel1D.pipe >> ../files/ModelicaTest_trunk_ModelicaTest.MultiBody.Parts.Rotor1D.Bevel1D.sim & ./ModelicaTest_trunk_ModelicaTest.MultiBody.Parts.Rotor1D.Bevel1D -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS > ModelicaTest_trunk_ModelicaTest.MultiBody.Parts.Rotor1D.Bevel1D.pipe 2>&1) [Timeout 480] diffSimulationResults("ModelicaTest_trunk_ModelicaTest.MultiBody.Parts.Rotor1D.Bevel1D_res.mat","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/Reference-modelica.org/ReferenceResults/MAP-LIB_ReferenceResults/v4.0.0/ModelicaTest/MultiBody/Parts/Rotor1D/Bevel1D/Bevel1D.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/ModelicaTest_trunk_ModelicaTest.MultiBody.Parts.Rotor1D.Bevel1D.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: 7.754635117948055]