Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck.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 0.001435/0.001435, allocations: 91.67 kB / 20.95 MB, free: 3.305 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 0.006964/0.006964, allocations: 161.6 kB / 24.37 MB, free: 8.484 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: 177.2 MB / 204.8 MB, free: 5.387 MB / 186.7 MB
"
[Timeout remaining time 179]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 13.0.2-maint.13.x/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 13.0.2-maint.13.x/package.mo): time 2.018/2.018, allocations: 389.6 MB / 0.6356 GB, free: 12.22 MB / 0.6042 GB
"
[Timeout remaining time 177]
Using package Buildings with version 13.0.2 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 13.0.2-maint.13.x/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(Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck")
translateModel(Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck") [Timeout 300]
"Notification: Performance of FrontEnd - loaded program: time 1.533e-06/1.533e-06, allocations: 0 / 0.7755 GB, free: 5.191 MB / 0.7292 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 2.335e-05/2.489e-05, allocations: 6.25 kB / 0.7755 GB, free: 5.184 MB / 0.7292 GB
Notification: Performance of NFInst.instantiate(Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck): time 0.001779/0.001804, allocations: 0.6014 MB / 0.7761 GB, free: 4.605 MB / 0.7292 GB
Notification: Performance of NFInst.instExpressions: time 0.0004595/0.002263, allocations: 185.6 kB / 0.7763 GB, free: 4.43 MB / 0.7292 GB
Notification: Performance of NFInst.updateImplicitVariability: time 2.624e-05/0.002289, allocations: 0 / 0.7763 GB, free: 4.43 MB / 0.7292 GB
Notification: Performance of NFTyping.typeComponents: time 3.033e-05/0.00232, allocations: 3.938 kB / 0.7763 GB, free: 4.426 MB / 0.7292 GB
Notification: Performance of NFTyping.typeBindings: time 4.473e-05/0.002364, allocations: 0.6562 kB / 0.7763 GB, free: 4.426 MB / 0.7292 GB
Notification: Performance of NFTyping.typeClassSections: time 0.0003839/0.002748, allocations: 56.44 kB / 0.7764 GB, free: 4.371 MB / 0.7292 GB
Notification: Performance of NFFlatten.flatten: time 5.946e-05/0.002808, allocations: 13.62 kB / 0.7764 GB, free: 4.359 MB / 0.7292 GB
Notification: Performance of NFFlatten.resolveConnections: time 4.845e-05/0.002856, allocations: 11.64 kB / 0.7764 GB, free: 4.352 MB / 0.7292 GB
Notification: Performance of NFEvalConstants.evaluate: time 3.658e-05/0.002893, allocations: 4.859 kB / 0.7764 GB, free: 4.348 MB / 0.7292 GB
Notification: Performance of NFSimplifyModel.simplify: time 2.868e-05/0.002922, allocations: 5.531 kB / 0.7764 GB, free: 4.344 MB / 0.7292 GB
Notification: Performance of NFPackage.collectConstants: time 1.249e-05/0.002934, allocations: 0 / 0.7764 GB, free: 4.344 MB / 0.7292 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.0002512/0.003185, allocations: 171.6 kB / 0.7766 GB, free: 4.176 MB / 0.7292 GB
Notification: Performance of NFScalarize.scalarize: time 4.269e-05/0.003228, allocations: 5.531 kB / 0.7766 GB, free: 4.172 MB / 0.7292 GB
Notification: Performance of NFVerifyModel.verify: time 1.694e-05/0.003245, allocations: 4.641 kB / 0.7766 GB, free: 4.168 MB / 0.7292 GB
Notification: Performance of NFConvertDAE.convert: time 0.0001542/0.003399, allocations: 85.67 kB / 0.7766 GB, free: 4.086 MB / 0.7292 GB
Notification: Performance of FrontEnd - DAE generated: time 4.358e-06/0.003403, allocations: 0 / 0.7766 GB, free: 4.086 MB / 0.7292 GB
Notification: Performance of FrontEnd: time 1.243e-06/0.003405, allocations: 0 / 0.7766 GB, free: 4.086 MB / 0.7292 GB
Notification: Performance of Transformations before backend: time 4.678e-06/0.003409, allocations: 0.8438 kB / 0.7767 GB, free: 4.086 MB / 0.7292 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 2
 * Number of variables: 2
Notification: Performance of Generate backend data structure: time 0.0002657/0.003675, allocations: 240.9 kB / 0.7769 GB, free: 3.824 MB / 0.7292 GB
Notification: Performance of prepare preOptimizeDAE: time 4.182e-05/0.003717, allocations: 10.83 kB / 0.7769 GB, free: 3.816 MB / 0.7292 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 3.25e-05/0.003749, allocations: 4.938 kB / 0.7769 GB, free: 3.812 MB / 0.7292 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.0001068/0.003856, allocations: 119 kB / 0.777 GB, free: 3.672 MB / 0.7292 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.332e-05/0.003869, allocations: 384 / 0.777 GB, free: 3.672 MB / 0.7292 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 2.522e-05/0.003895, allocations: 384 / 0.777 GB, free: 3.672 MB / 0.7292 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 9.882e-05/0.003993, allocations: 59.92 kB / 0.7771 GB, free: 3.602 MB / 0.7292 GB
Notification: Performance of preOpt findStateOrder (simulation): time 9.257e-06/0.004003, allocations: 192 / 0.7771 GB, free: 3.602 MB / 0.7292 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.826e-06/0.004012, allocations: 5.25 kB / 0.7771 GB, free: 3.598 MB / 0.7292 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.694e-06/0.004019, allocations: 5.078 kB / 0.7771 GB, free: 3.594 MB / 0.7292 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 1.214e-05/0.004031, allocations: 7.938 kB / 0.7771 GB, free: 3.586 MB / 0.7292 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0001159/0.004147, allocations: 63.3 kB / 0.7771 GB, free: 3.508 MB / 0.7292 GB
Notification: Performance of preOpt comSubExp (simulation): time 4.701e-05/0.004194, allocations: 23.61 kB / 0.7772 GB, free: 3.477 MB / 0.7292 GB
Notification: Performance of preOpt resolveLoops (simulation): time 1.427e-05/0.004209, allocations: 8.922 kB / 0.7772 GB, free: 3.465 MB / 0.7292 GB
Notification: Performance of preOpt evalFunc (simulation): time 4.898e-05/0.004257, allocations: 5.219 kB / 0.7772 GB, free: 3.461 MB / 0.7292 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.661e-05/0.004284, allocations: 30.56 kB / 0.7772 GB, free: 3.422 MB / 0.7292 GB
Notification: Performance of pre-optimization done (n=2): time 1.352e-06/0.004285, allocations: 0.5469 kB / 0.7772 GB, free: 3.422 MB / 0.7292 GB
Notification: Performance of matching and sorting (n=3): time 0.0005908/0.004876, allocations: 193.1 kB / 0.7774 GB, free: 3.199 MB / 0.7292 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 3.851e-05/0.004915, allocations: 51.41 kB / 0.7774 GB, free: 3.137 MB / 0.7292 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 7.295e-05/0.004988, allocations: 115.5 kB / 0.7776 GB, free: 3.012 MB / 0.7292 GB
Notification: Performance of collectPreVariables (initialization): time 1.457e-05/0.005002, allocations: 29.7 kB / 0.7776 GB, free: 2.977 MB / 0.7292 GB
Notification: Performance of collectInitialEqns (initialization): time 2.656e-05/0.005029, allocations: 80.67 kB / 0.7777 GB, free: 2.895 MB / 0.7292 GB
Notification: Performance of collectInitialBindings (initialization): time 3.027e-05/0.005059, allocations: 12.95 kB / 0.7777 GB, free: 2.883 MB / 0.7292 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 2.677e-05/0.005086, allocations: 17.72 kB / 0.7777 GB, free: 2.859 MB / 0.7292 GB
Notification: Performance of setup shared object (initialization): time 8.807e-05/0.005174, allocations: 322.8 kB / 0.778 GB, free: 2.535 MB / 0.7292 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 1.165e-05/0.005186, allocations: 4.547 kB / 0.778 GB, free: 2.531 MB / 0.7292 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 2.23e-05/0.005208, allocations: 26.33 kB / 0.778 GB, free: 2.5 MB / 0.7292 GB
Notification: Performance of analyzeInitialSystem (initialization): time 3.929e-05/0.005247, allocations: 27.36 kB / 0.7781 GB, free: 2.465 MB / 0.7292 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.242e-06/0.005248, allocations: 0.6875 kB / 0.7781 GB, free: 2.465 MB / 0.7292 GB
Notification: Performance of matching and sorting (n=4) (initialization): time 6.72e-05/0.005316, allocations: 52.88 kB / 0.7781 GB, free: 2.406 MB / 0.7292 GB
Notification: Performance of prepare postOptimizeDAE: time 1.815e-05/0.005334, allocations: 10.66 kB / 0.7781 GB, free: 2.398 MB / 0.7292 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.881e-06/0.00534, allocations: 0 / 0.7781 GB, free: 2.398 MB / 0.7292 GB
Notification: Performance of postOpt tearingSystem (initialization): time 1.023e-05/0.00535, allocations: 0.7656 kB / 0.7781 GB, free: 2.398 MB / 0.7292 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 4.79e-05/0.005398, allocations: 8.75 kB / 0.7781 GB, free: 2.391 MB / 0.7292 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 3.607e-06/0.005401, allocations: 0 / 0.7781 GB, free: 2.391 MB / 0.7292 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 1.405e-05/0.005415, allocations: 4.969 kB / 0.7781 GB, free: 2.387 MB / 0.7292 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.893e-06/0.005422, allocations: 3.938 kB / 0.7781 GB, free: 2.383 MB / 0.7292 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 2
 * Number of states: 0 ()
 * Number of discrete variables: 0 ()
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (4):
 * Single equations (assignments): 4
 * Array equations: 0
 * Algorithm blocks: 0
 * 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 6.168e-05/0.005484, allocations: 113.7 kB / 0.7782 GB, free: 2.262 MB / 0.7292 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 7.544e-06/0.005492, allocations: 3.984 kB / 0.7782 GB, free: 2.258 MB / 0.7292 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 9.922e-05/0.005591, allocations: 55.33 kB / 0.7783 GB, free: 2.203 MB / 0.7292 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.008e-06/0.005595, allocations: 4 kB / 0.7783 GB, free: 2.199 MB / 0.7292 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 1.774e-06/0.005597, allocations: 1.375 kB / 0.7783 GB, free: 2.199 MB / 0.7292 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.527e-06/0.0056, allocations: 0 / 0.7783 GB, free: 2.199 MB / 0.7292 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 7.713e-05/0.005677, allocations: 77.81 kB / 0.7784 GB, free: 2.105 MB / 0.7292 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.014e-06/0.005679, allocations: 0 / 0.7784 GB, free: 2.105 MB / 0.7292 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 3.796e-05/0.005717, allocations: 5.125 kB / 0.7784 GB, free: 2.102 MB / 0.7292 GB
Notification: Performance of postOpt tearingSystem (simulation): time 2.114e-06/0.005719, allocations: 1.094 kB / 0.7784 GB, free: 2.102 MB / 0.7292 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.9e-06/0.005724, allocations: 0 / 0.7784 GB, free: 2.102 MB / 0.7292 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 2.575e-06/0.005727, allocations: 1.062 kB / 0.7784 GB, free: 2.102 MB / 0.7292 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.172e-06/0.005728, allocations: 0 / 0.7784 GB, free: 2.102 MB / 0.7292 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0001179/0.005846, allocations: 86.64 kB / 0.7785 GB, free: 1.996 MB / 0.7292 GB
Notification: Performance of postOpt removeConstants (simulation): time 7.204e-06/0.005853, allocations: 0.5 kB / 0.7785 GB, free: 1.996 MB / 0.7292 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 9.268e-06/0.005862, allocations: 0.7812 kB / 0.7785 GB, free: 1.996 MB / 0.7292 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 2.453e-05/0.005887, allocations: 0 / 0.7785 GB, free: 1.996 MB / 0.7292 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 1.45e-05/0.005901, allocations: 4.625 kB / 0.7785 GB, free: 1.992 MB / 0.7292 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.29e-06/0.005907, allocations: 0 / 0.7785 GB, free: 1.992 MB / 0.7292 GB
Notification: Performance of sorting global known variables: time 1.974e-05/0.005926, allocations: 18.33 kB / 0.7785 GB, free: 1.973 MB / 0.7292 GB
Notification: Performance of sort global known variables: time 5e-08/0.005926, allocations: 0 / 0.7785 GB, free: 1.973 MB / 0.7292 GB
Notification: Performance of remove unused functions: time 0.000139/0.006065, allocations: 24.44 kB / 0.7785 GB, free: 1.949 MB / 0.7292 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 1
 * Number of states: 1 (y)
 * 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 (3):
 * Single equations (assignments): 3
 * Array equations: 0
 * Algorithm blocks: 0
 * 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 Backend phase and start with SimCode phase: time 0.000164/0.006229, allocations: 106.2 kB / 0.7786 GB, free: 1.84 MB / 0.7292 GB
Notification: Performance of simCode: created initialization part: time 8.869e-05/0.006318, allocations: 17.34 kB / 0.7786 GB, free: 1.82 MB / 0.7292 GB
Notification: Performance of simCode: created event and clocks part: time 3.497e-06/0.006322, allocations: 0 / 0.7786 GB, free: 1.82 MB / 0.7292 GB
Notification: Performance of simCode: created simulation system equations: time 1.183e-05/0.006333, allocations: 17.62 kB / 0.7786 GB, free: 1.801 MB / 0.7292 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 8.326e-05/0.006417, allocations: 13.16 kB / 0.7787 GB, free: 1.793 MB / 0.7292 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0002162/0.006633, allocations: 122.9 kB / 0.7788 GB, free: 1.645 MB / 0.7292 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 3.178e-05/0.006665, allocations: 59.34 kB / 0.7788 GB, free: 1.566 MB / 0.7292 GB
Notification: Performance of simCode: alias equations: time 2.691e-05/0.006692, allocations: 7.953 kB / 0.7788 GB, free: 1.559 MB / 0.7292 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 4.588e-05/0.006737, allocations: 55.38 kB / 0.7789 GB, free: 1.504 MB / 0.7292 GB
Notification: Performance of SimCode: time 1.032e-06/0.006738, allocations: 0 / 0.7789 GB, free: 1.504 MB / 0.7292 GB
Notification: Performance of Templates: time 0.00311/0.009849, allocations: 1.034 MB / 0.7799 GB, free: 0.5078 MB / 0.7292 GB
"
[Timeout remaining time 300]
make -j1 -f Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck.makefile [Timeout 300]
(rm -f Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck.pipe ; mkfifo Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck.pipe ; head -c 1048576 < Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck.pipe >> ../files/Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck.sim & (cd run_cvode && ../Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck -abortSlowSimulation -alarm=240  -lv LOG_STATS -inputPath=.. -s cvode) > Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck.pipe 2>&1) [Timeout 240]
(rm -f Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck_gbode.pipe ; mkfifo Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck_gbode.pipe ; head -c 1048576 < Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck_gbode.pipe >> /var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck_gbode.sim & (cd run_gbode && ../Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck -abortSlowSimulation -alarm=240  -lv LOG_STATS -inputPath=.. -s gbode -gbm=radauIIA3) > Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck_gbode.pipe 2>&1) [Timeout 240]
(rm -f Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck_ida.pipe ; mkfifo Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck_ida.pipe ; head -c 1048576 < Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck_ida.pipe >> /var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck_ida.sim & (cd run_ida && ../Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck -abortSlowSimulation -alarm=240  -lv LOG_STATS -inputPath=.. -s ida) > Buildings_13_Buildings.Fluid.Utilities.Examples.ExtendedPolynomialDerivativeCheck_ida.pipe 2>&1) [Timeout 240]
[Calling sys.exit(0), Time elapsed: 5.5177844585850835]