Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Modelica_4.1.0_Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem.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 0.001889/0.001889, allocations: 111.1 kB / 20.44 MB, free: 1.062 MB / 14.72 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 0.002378/0.002378, allocations: 214.3 kB / 23.73 MB, free: 4.16 MB / 14.72 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 1.53/1.53, allocations: 230.6 MB / 257.5 MB, free: 7.816 MB / 206.1 MB " [Timeout remaining time 178] 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(Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5002,variableFilter="time|body1.frame_a.r_0.1.|body1.frame_a.r_0.2.|body1.frame_a.r_0.3.|body1.v_0.1.|body1.v_0.2.|body1.v_0.3.|body1.w_a.1.|body1.w_a.2.|body1.w_a.3.|p2.s|p2.v",fileNamePrefix="Modelica_4.1.0_Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem") translateModel(Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5002,variableFilter="time|body1.frame_a.r_0.1.|body1.frame_a.r_0.2.|body1.frame_a.r_0.3.|body1.v_0.1.|body1.v_0.2.|body1.v_0.3.|body1.w_a.1.|body1.w_a.2.|body1.w_a.3.|p2.s|p2.v",fileNamePrefix="Modelica_4.1.0_Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem") [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 0.001598/0.001598, allocations: 47.92 kB / 378.2 MB, free: 2.449 MB / 302.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2425/0.2441, allocations: 53.36 MB / 431.6 MB, free: 6.699 MB / 334.1 MB Notification: Performance of NFInst.instantiate(Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem): time 0.01874/0.2628, allocations: 10.47 MB / 442.1 MB, free: 12.19 MB / 350.1 MB Notification: Performance of NFInst.instExpressions: time 0.009469/0.2723, allocations: 4.013 MB / 446.1 MB, free: 8.16 MB / 350.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.001799/0.2741, allocations: 83.62 kB / 446.2 MB, free: 8.078 MB / 350.1 MB Notification: Performance of NFTyping.typeComponents: time 0.005831/0.2799, allocations: 2.679 MB / 448.8 MB, free: 5.391 MB / 350.1 MB Notification: Performance of NFTyping.typeBindings: time 0.005489/0.2854, allocations: 2 MB / 450.8 MB, free: 3.383 MB / 350.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.002802/0.2882, allocations: 0.8149 MB / 451.6 MB, free: 2.566 MB / 350.1 MB Notification: Performance of NFFlatten.flatten: time 0.007398/0.2956, allocations: 4.69 MB / 456.3 MB, free: 13.87 MB / 366.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.004997/0.3006, allocations: 2.924 MB / 459.3 MB, free: 10.89 MB / 366.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.003264/0.3038, allocations: 1.702 MB / 461 MB, free: 9.188 MB / 366.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.004213/0.3081, allocations: 2.379 MB / 463.3 MB, free: 6.801 MB / 366.1 MB Notification: Performance of NFPackage.collectConstants: time 0.001144/0.3092, allocations: 356 kB / 463.7 MB, free: 6.453 MB / 366.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0029/0.3121, allocations: 1.159 MB / 464.8 MB, free: 5.293 MB / 366.1 MB Notification: Performance of NFScalarize.scalarize: time 0.00284/0.3149, allocations: 2.15 MB / 467 MB, free: 3.137 MB / 366.1 MB Notification: Performance of NFVerifyModel.verify: time 0.003735/0.3187, allocations: 1.798 MB / 468.8 MB, free: 1.328 MB / 366.1 MB Notification: Performance of NFConvertDAE.convert: time 0.01312/0.3318, allocations: 7.528 MB / 476.3 MB, free: 9.77 MB / 382.1 MB Notification: Performance of FrontEnd - DAE generated: time 4.829e-06/0.3318, allocations: 0 / 476.3 MB, free: 9.77 MB / 382.1 MB Notification: Performance of FrontEnd: time 3.827e-06/0.3318, allocations: 4 kB / 476.3 MB, free: 9.766 MB / 382.1 MB Notification: Performance of Transformations before backend: time 0.0002158/0.332, allocations: 0 / 476.3 MB, free: 9.766 MB / 382.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 1686 * Number of variables: 1686 Notification: Performance of Generate backend data structure: time 0.01987/0.3519, allocations: 5.299 MB / 481.6 MB, free: 4.406 MB / 382.1 MB Notification: Performance of prepare preOptimizeDAE: time 6.127e-05/0.352, allocations: 8.031 kB / 481.6 MB, free: 4.398 MB / 382.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01393/0.3659, allocations: 2.197 MB / 483.8 MB, free: 2.195 MB / 382.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.008604/0.3745, allocations: 2.441 MB / 486.3 MB, free: 15.7 MB / 398.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003957/0.3749, allocations: 274.8 kB / 486.5 MB, free: 15.43 MB / 398.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.002105/0.377, allocations: 427.7 kB / 487 MB, free: 15.02 MB / 398.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.03743/0.4144, allocations: 12.34 MB / 499.3 MB, free: 1.844 MB / 398.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 0.0001847/0.4146, allocations: 47.58 kB / 499.3 MB, free: 1.797 MB / 398.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0007532/0.4154, allocations: 175.8 kB / 499.5 MB, free: 1.625 MB / 398.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.003943/0.4193, allocations: 2.162 MB / 0.4899 GB, free: 15.46 MB / 414.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.02381/0.4431, allocations: 10.22 MB / 0.4999 GB, free: 5.219 MB / 414.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.2906/0.7337, allocations: 41.43 MB / 0.5404 GB, free: 72.03 MB / 446.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.01097/0.7446, allocations: 3.834 MB / 0.5441 GB, free: 71.92 MB / 446.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.002002/0.7466, allocations: 1.63 MB / 0.5457 GB, free: 71.89 MB / 446.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.009777/0.7564, allocations: 6.48 MB / 0.552 GB, free: 69.74 MB / 446.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.738e-05/0.7565, allocations: 47.44 kB / 0.5521 GB, free: 69.7 MB / 446.1 MB Notification: Performance of pre-optimization done (n=183): time 4.859e-06/0.7565, allocations: 3.438 kB / 0.5521 GB, free: 69.7 MB / 446.1 MB Notification: Performance of matching and sorting (n=205): time 0.03483/0.7913, allocations: 16 MB / 0.5677 GB, free: 59.45 MB / 446.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0008143/0.7921, allocations: 1.566 MB / 0.5692 GB, free: 57.76 MB / 446.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003871/0.796, allocations: 3.989 MB / 0.5731 GB, free: 53.95 MB / 446.1 MB Notification: Performance of collectPreVariables (initialization): time 0.0002298/0.7962, allocations: 53.7 kB / 0.5732 GB, free: 53.89 MB / 446.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.001203/0.7974, allocations: 3.57 MB / 0.5767 GB, free: 50.44 MB / 446.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0005328/0.7979, allocations: 0.8361 MB / 0.5775 GB, free: 49.61 MB / 446.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001597/0.7995, allocations: 1.373 MB / 0.5788 GB, free: 48.23 MB / 446.1 MB Notification: Performance of setup shared object (initialization): time 4.004e-05/0.7996, allocations: 305.1 kB / 0.5791 GB, free: 47.93 MB / 446.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.003012/0.8026, allocations: 2.289 MB / 0.5813 GB, free: 45.64 MB / 446.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.004179/0.8068, allocations: 6.411 MB / 0.5876 GB, free: 37.25 MB / 446.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.007898/0.8147, allocations: 9.358 MB / 0.5967 GB, free: 26.04 MB / 446.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 8.701e-05/0.8147, allocations: 40 kB / 0.5968 GB, free: 26 MB / 446.1 MB Notification: Performance of matching and sorting (n=894) (initialization): time 0.01989/0.8346, allocations: 10.14 MB / 0.6067 GB, free: 15.85 MB / 446.1 MB Notification: Performance of prepare postOptimizeDAE: time 7.708e-05/0.8347, allocations: 68 kB / 0.6067 GB, free: 15.79 MB / 446.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.01041/0.8451, allocations: 3.893 MB / 0.6105 GB, free: 11.88 MB / 446.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.009955/0.8551, allocations: 2.25 MB / 0.6127 GB, free: 9.609 MB / 446.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004599/0.8597, allocations: 1.595 MB / 0.6143 GB, free: 8.012 MB / 446.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.007319/0.867, allocations: 6.324 MB / 0.6205 GB, free: 1.477 MB / 446.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004798/0.8718, allocations: 435.4 kB / 0.6209 GB, free: 1.051 MB / 446.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0007744/0.8726, allocations: 416 kB / 0.6213 GB, free: 0.6445 MB / 446.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 665 * Number of states: 0 () * Number of discrete variables: 45 (damper1.color_b[3],damper1.color_b[2],damper1.color_b[1],damper1.color_a[3],damper1.color_a[2],damper1.color_a[1],spring1.color[3],spring1.color[2],spring1.color[1],spring1.massColor[3],spring1.massColor[2],spring1.massColor[1],spring2.color[3],spring2.color[2],spring2.color[1],spring2.massColor[3],spring2.massColor[2],spring2.massColor[1],p2.boxColor[3],p2.boxColor[2],p2.boxColor[1],body2.sphereColor[3],body2.sphereColor[2],body2.sphereColor[1],bar2.color[3],bar2.color[2],bar2.color[1],bar1.color[3],bar1.color[2],bar1.color[1],body1.sphereColor[3],body1.sphereColor[2],body1.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]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (856): * Single equations (assignments): 847 * Array equations: 5 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 3 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 2 systems {(4,100.0%), (3,100.0%)} * Non-linear Jacobian (size): 1 system {4} * Without analytic Jacobian (size): 0 systems Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(2,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.003361/0.8759, allocations: 2.212 MB / 0.6234 GB, free: 14.42 MB / 462.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0007058/0.8766, allocations: 357.6 kB / 0.6238 GB, free: 14.07 MB / 462.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.006637/0.8833, allocations: 3.27 MB / 0.627 GB, free: 10.78 MB / 462.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 0.00555/0.8888, allocations: 2.773 MB / 0.6297 GB, free: 7.988 MB / 462.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.071e-05/0.8888, allocations: 0 / 0.6297 GB, free: 7.988 MB / 462.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.268e-05/0.8888, allocations: 11.97 kB / 0.6297 GB, free: 7.977 MB / 462.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01824/0.9071, allocations: 9.005 MB / 0.6385 GB, free: 14.73 MB / 478.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.463e-05/0.9071, allocations: 16 kB / 0.6385 GB, free: 14.71 MB / 478.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001539/0.9087, allocations: 375 kB / 0.6389 GB, free: 14.35 MB / 478.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.003552/0.9122, allocations: 0.9902 MB / 0.6398 GB, free: 13.35 MB / 478.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001803/0.9124, allocations: 63.97 kB / 0.6399 GB, free: 13.29 MB / 478.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.006051/0.9184, allocations: 4.64 MB / 0.6444 GB, free: 8.445 MB / 478.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 0.001204/0.9196, allocations: 1.442 MB / 0.6458 GB, free: 6.895 MB / 478.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01104/0.9307, allocations: 5.942 MB / 0.6516 GB, free: 0.75 MB / 478.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.001691/0.9324, allocations: 337.4 kB / 0.652 GB, free: 428 kB / 478.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0004733/0.9328, allocations: 67.8 kB / 0.652 GB, free: 364 kB / 478.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001704/0.9346, allocations: 151.8 kB / 0.6522 GB, free: 212 kB / 478.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0003709/0.9349, allocations: 176.3 kB / 0.6523 GB, free: 36 kB / 478.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001871/0.9351, allocations: 75.98 kB / 0.6524 GB, free: 15.96 MB / 494.1 MB Notification: Performance of sorting global known variables: time 0.003946/0.9391, allocations: 2.262 MB / 0.6546 GB, free: 13.71 MB / 494.1 MB Notification: Performance of sort global known variables: time 1.11e-07/0.9391, allocations: 0 / 0.6546 GB, free: 13.71 MB / 494.1 MB Notification: Performance of remove unused functions: time 0.006135/0.9452, allocations: 1.137 MB / 0.6557 GB, free: 12.58 MB / 494.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 60 * Number of states: 14 ($STATESET1.x[3],$STATESET1.x[2],$STATESET1.x[1],body1.frame_a.r_0[1],body1.frame_a.r_0[2],body1.frame_a.r_0[3],body1.v_0[1],body1.v_0[2],body1.v_0[3],body1.w_a[1],body1.w_a[2],body1.w_a[3],p2.s,p2.v) * 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 (180): * Single equations (assignments): 173 * Array equations: 3 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 3 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 2 systems {(4,100.0%), (3,100.0%)} * Non-linear Jacobian (size): 1 system {4} * Without analytic Jacobian (size): 0 systems Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(2,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0005994/0.9458, allocations: 214.4 kB / 0.6559 GB, free: 12.36 MB / 494.1 MB Notification: Performance of simCode: created initialization part: time 0.01141/0.9572, allocations: 5.665 MB / 0.6615 GB, free: 6.691 MB / 494.1 MB Notification: Performance of simCode: created event and clocks part: time 2.146e-05/0.9572, allocations: 4 kB / 0.6615 GB, free: 6.688 MB / 494.1 MB Notification: Performance of simCode: created simulation system equations: time 0.004447/0.9617, allocations: 1.973 MB / 0.6634 GB, free: 4.688 MB / 494.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003015/0.9647, allocations: 438 kB / 0.6638 GB, free: 4.262 MB / 494.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02037/0.9851, allocations: 10.83 MB / 0.6744 GB, free: 9.207 MB / 0.4981 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.004251/0.9893, allocations: 2.93 MB / 0.6773 GB, free: 6.242 MB / 0.4981 GB Notification: Performance of simCode: alias equations: time 0.004686/0.994, allocations: 1.969 MB / 0.6792 GB, free: 4.266 MB / 0.4981 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0006679/0.9947, allocations: 255.4 kB / 0.6794 GB, free: 4.016 MB / 0.4981 GB Notification: Performance of SimCode: time 1.042e-06/0.9947, allocations: 0 / 0.6794 GB, free: 4.016 MB / 0.4981 GB Notification: Performance of Templates: time 0.07954/1.074, allocations: 38.88 MB / 0.7174 GB, free: 13.68 MB / 0.545 GB " [Timeout remaining time 659] make -j1 -f Modelica_4.1.0_Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem.makefile [Timeout 660] (rm -f Modelica_4.1.0_Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem.pipe ; mkfifo Modelica_4.1.0_Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem.pipe ; head -c 1048576 < Modelica_4.1.0_Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem.pipe >> ../files/Modelica_4.1.0_Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem.sim & ./Modelica_4.1.0_Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS > Modelica_4.1.0_Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem.pipe 2>&1) [Timeout 480] diffSimulationResults("Modelica_4.1.0_Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem_res.mat","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/Reference-modelica.org/ReferenceResults/MAP-LIB_ReferenceResults/v4.1.0/Modelica/Mechanics/MultiBody/Examples/Elementary/SpringDamperSystem/SpringDamperSystem.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Modelica_4.1.0_Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem.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: 6.964310545474291]