Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Utilities.Time.Examples.CalendarTime.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 0.00131/0.00131, allocations: 110.4 kB / 18.94 MB, free: 2.949 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 0.001517/0.001517, allocations: 211.9 kB / 22.25 MB, free: 5.129 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 1.513/1.513, allocations: 230.6 MB / 256 MB, free: 7.973 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings master/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings master/package.mo): time 3.341/3.341, allocations: 0.505 GB / 0.8101 GB, free: 22.08 MB / 0.6231 GB " [Timeout remaining time 176] Using package Buildings with version 13.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings master/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: "" <> buildModelFMU(Buildings.Utilities.Time.Examples.CalendarTime,fileNamePrefix="Buildings_latest_Buildings_Utilities_Time_Examples_CalendarTime",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Utilities.Time.Examples.CalendarTime,fileNamePrefix="Buildings_latest_Buildings_Utilities_Time_Examples_CalendarTime",fmuType="me",version="2.0",platforms={"static"}) [Timeout 300] "Notification: Buildings requested package Modelica of version 4.0.0. Modelica 4.1.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.002043/0.002043, allocations: 63.39 kB / 1.177 GB, free: 17.11 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3785/0.3805, allocations: 180.2 MB / 1.353 GB, free: 8.523 MB / 1.045 GB Notification: Performance of NFInst.instantiate(Buildings.Utilities.Time.Examples.CalendarTime): time 0.003116/0.3836, allocations: 1.548 MB / 1.354 GB, free: 6.969 MB / 1.045 GB Notification: Performance of NFInst.instExpressions: time 0.001412/0.385, allocations: 0.536 MB / 1.355 GB, free: 6.434 MB / 1.045 GB Notification: Performance of NFInst.updateImplicitVariability: time 6.484e-05/0.3851, allocations: 3.938 kB / 1.355 GB, free: 6.43 MB / 1.045 GB Notification: Performance of NFTyping.typeComponents: time 0.0001146/0.3852, allocations: 15.86 kB / 1.355 GB, free: 6.414 MB / 1.045 GB Notification: Performance of NFTyping.typeBindings: time 0.0001302/0.3854, allocations: 31.62 kB / 1.355 GB, free: 6.383 MB / 1.045 GB Notification: Performance of NFTyping.typeClassSections: time 0.0008794/0.3862, allocations: 319.3 kB / 1.355 GB, free: 6.07 MB / 1.045 GB Notification: Performance of NFFlatten.flatten: time 0.0006049/0.3868, allocations: 487.5 kB / 1.356 GB, free: 5.594 MB / 1.045 GB Notification: Performance of NFFlatten.resolveConnections: time 4.663e-05/0.3869, allocations: 4 kB / 1.356 GB, free: 5.59 MB / 1.045 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0004183/0.3873, allocations: 283.6 kB / 1.356 GB, free: 5.312 MB / 1.045 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0003398/0.3876, allocations: 148.8 kB / 1.356 GB, free: 5.168 MB / 1.045 GB Notification: Performance of NFPackage.collectConstants: time 7.633e-05/0.3877, allocations: 24 kB / 1.356 GB, free: 5.145 MB / 1.045 GB Notification: Performance of NFFlatten.collectFunctions: time 7.371e-05/0.3878, allocations: 28 kB / 1.356 GB, free: 5.117 MB / 1.045 GB Notification: Performance of NFScalarize.scalarize: time 0.0001461/0.3879, allocations: 115.7 kB / 1.356 GB, free: 5.004 MB / 1.045 GB Notification: Performance of NFVerifyModel.verify: time 0.0002156/0.3882, allocations: 187 kB / 1.356 GB, free: 4.82 MB / 1.045 GB Notification: Performance of NFConvertDAE.convert: time 0.0005121/0.3887, allocations: 430.6 kB / 1.357 GB, free: 4.398 MB / 1.045 GB Notification: Performance of FrontEnd - DAE generated: time 5.28e-06/0.3887, allocations: 4 kB / 1.357 GB, free: 4.395 MB / 1.045 GB Notification: Performance of FrontEnd: time 1.844e-06/0.3887, allocations: 0 / 1.357 GB, free: 4.395 MB / 1.045 GB Notification: Performance of Transformations before backend: time 7.284e-06/0.3887, allocations: 0 / 1.357 GB, free: 4.395 MB / 1.045 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 14 * Number of variables: 14 Notification: Performance of Generate backend data structure: time 0.001421/0.3901, allocations: 0.8067 MB / 1.358 GB, free: 3.516 MB / 1.045 GB Notification: Performance of prepare preOptimizeDAE: time 5.292e-05/0.3902, allocations: 12.03 kB / 1.358 GB, free: 3.504 MB / 1.045 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 5.636e-05/0.3902, allocations: 34.75 kB / 1.358 GB, free: 3.461 MB / 1.045 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001191/0.3903, allocations: 52.7 kB / 1.358 GB, free: 3.41 MB / 1.045 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0004649/0.3908, allocations: 252.8 kB / 1.358 GB, free: 3.141 MB / 1.045 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.662e-05/0.3908, allocations: 20.36 kB / 1.358 GB, free: 3.121 MB / 1.045 GB Notification: Performance of preOpt expandDerOperator (simulation): time 7.416e-05/0.3909, allocations: 32.36 kB / 1.358 GB, free: 3.09 MB / 1.045 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0009547/0.3919, allocations: 208.1 kB / 1.358 GB, free: 2.883 MB / 1.045 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.592e-05/0.3919, allocations: 3.938 kB / 1.358 GB, free: 2.879 MB / 1.045 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.516e-05/0.3919, allocations: 3.938 kB / 1.358 GB, free: 2.875 MB / 1.045 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.985e-06/0.3919, allocations: 4 kB / 1.358 GB, free: 2.871 MB / 1.045 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.000701/0.3926, allocations: 99.91 kB / 1.358 GB, free: 2.773 MB / 1.045 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0006048/0.3932, allocations: 368.3 kB / 1.359 GB, free: 2.371 MB / 1.045 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0009778/0.3942, allocations: 162.5 kB / 1.359 GB, free: 2.203 MB / 1.045 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0006826/0.3949, allocations: 105.2 kB / 1.359 GB, free: 2.098 MB / 1.045 GB Notification: Performance of preOpt evalFunc (simulation): time 2.56e-05/0.3949, allocations: 0 / 1.359 GB, free: 2.098 MB / 1.045 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0009552/0.3959, allocations: 237 kB / 1.359 GB, free: 1.855 MB / 1.045 GB Notification: Performance of pre-optimization done (n=16): time 1.824e-06/0.3959, allocations: 0 / 1.359 GB, free: 1.855 MB / 1.045 GB Notification: Performance of matching and sorting (n=16): time 0.002499/0.3984, allocations: 485.1 kB / 1.36 GB, free: 1.375 MB / 1.045 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.997e-05/0.3984, allocations: 59.41 kB / 1.36 GB, free: 1.305 MB / 1.045 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0005052/0.3989, allocations: 409.9 kB / 1.36 GB, free: 0.8945 MB / 1.045 GB Notification: Performance of collectPreVariables (initialization): time 9.778e-05/0.399, allocations: 45.69 kB / 1.36 GB, free: 0.8438 MB / 1.045 GB Notification: Performance of collectInitialEqns (initialization): time 8.767e-05/0.3991, allocations: 89.44 kB / 1.36 GB, free: 0.7539 MB / 1.045 GB Notification: Performance of collectInitialBindings (initialization): time 6.526e-05/0.3992, allocations: 47.67 kB / 1.36 GB, free: 0.707 MB / 1.045 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002148/0.3994, allocations: 129.5 kB / 1.36 GB, free: 0.5742 MB / 1.045 GB Notification: Performance of setup shared object (initialization): time 0.0001542/0.3996, allocations: 326.8 kB / 1.361 GB, free: 252 kB / 1.045 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002738/0.3998, allocations: 111.9 kB / 1.361 GB, free: 140 kB / 1.045 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0003181/0.4002, allocations: 177.8 kB / 1.361 GB, free: 15.94 MB / 1.061 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0004207/0.4006, allocations: 279.3 kB / 1.361 GB, free: 15.64 MB / 1.061 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.873e-06/0.4006, allocations: 4 kB / 1.361 GB, free: 15.63 MB / 1.061 GB Notification: Performance of matching and sorting (n=29) (initialization): time 0.000895/0.4015, allocations: 492.7 kB / 1.362 GB, free: 15.13 MB / 1.061 GB Notification: Performance of prepare postOptimizeDAE: time 9.491e-05/0.4016, allocations: 87.31 kB / 1.362 GB, free: 15.04 MB / 1.061 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.446e-06/0.4016, allocations: 4 kB / 1.362 GB, free: 15.03 MB / 1.061 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.859e-05/0.4016, allocations: 0 / 1.362 GB, free: 15.03 MB / 1.061 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001854/0.4018, allocations: 27.92 kB / 1.362 GB, free: 15 MB / 1.061 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.189e-05/0.4018, allocations: 7.938 kB / 1.362 GB, free: 15 MB / 1.061 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004771/0.4023, allocations: 59.95 kB / 1.362 GB, free: 14.94 MB / 1.061 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.904e-05/0.4024, allocations: 59.98 kB / 1.362 GB, free: 14.88 MB / 1.061 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 7 * Number of states: 0 () * Number of discrete variables: 24 (calendarTime2016.firstHourSampling,$PRE.calendarTime2016.firstHourSampling,calendarTime2016.firstDaySampling,$PRE.calendarTime2016.firstDaySampling,calendarTime2016.daySampleTrigger,$whenCondition1,calendarTime2016.hourSampleTrigger,$whenCondition2,calendarTime2016.epochLastMonth,$PRE.calendarTime2016.epochLastMonth,calendarTime2016.yearIndex,$PRE.calendarTime2016.yearIndex,calendarTime2016.daysSinceEpoch,$PRE.calendarTime2016.daysSinceEpoch,calendarTime2016.weekDay,$PRE.calendarTime2016.weekDay,calendarTime2016.hour,$PRE.calendarTime2016.hour,calendarTime2016.day,$PRE.calendarTime2016.day,calendarTime2016.month,$PRE.calendarTime2016.month,calendarTime2016.year,$PRE.calendarTime2016.year) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (26): * Single equations (assignments): 24 * Array equations: 0 * Algorithm blocks: 2 * 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 0.0002805/0.4026, allocations: 209.6 kB / 1.362 GB, free: 14.66 MB / 1.061 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 6.59e-05/0.4027, allocations: 43.66 kB / 1.362 GB, free: 14.62 MB / 1.061 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 7.491e-05/0.4028, allocations: 39.67 kB / 1.362 GB, free: 14.58 MB / 1.061 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.424e-06/0.4028, allocations: 4 kB / 1.362 GB, free: 14.57 MB / 1.061 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.701e-06/0.4028, allocations: 0 / 1.362 GB, free: 14.57 MB / 1.061 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.817e-06/0.4028, allocations: 0 / 1.362 GB, free: 14.57 MB / 1.061 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002229/0.405, allocations: 0.7179 MB / 1.363 GB, free: 13.8 MB / 1.061 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.364e-06/0.405, allocations: 0 / 1.363 GB, free: 13.8 MB / 1.061 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 4.943e-05/0.4051, allocations: 11.92 kB / 1.363 GB, free: 13.79 MB / 1.061 GB Notification: Performance of postOpt tearingSystem (simulation): time 4.408e-06/0.4051, allocations: 0 / 1.363 GB, free: 13.79 MB / 1.061 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.813e-05/0.4051, allocations: 19.98 kB / 1.363 GB, free: 13.77 MB / 1.061 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 2.224e-06/0.4051, allocations: 4 kB / 1.363 GB, free: 13.77 MB / 1.061 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.406e-06/0.4051, allocations: 3.984 kB / 1.363 GB, free: 13.77 MB / 1.061 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001678/0.4068, allocations: 471.4 kB / 1.363 GB, free: 13.29 MB / 1.061 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0003196/0.4071, allocations: 133.5 kB / 1.364 GB, free: 13.16 MB / 1.061 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.591e-05/0.4072, allocations: 12 kB / 1.364 GB, free: 13.15 MB / 1.061 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0004531/0.4077, allocations: 35.89 kB / 1.364 GB, free: 13.11 MB / 1.061 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 3.258e-05/0.4077, allocations: 7.984 kB / 1.364 GB, free: 13.11 MB / 1.061 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.601e-05/0.4078, allocations: 55.98 kB / 1.364 GB, free: 13.05 MB / 1.061 GB Notification: Performance of sorting global known variables: time 0.0003276/0.4081, allocations: 295.1 kB / 1.364 GB, free: 12.77 MB / 1.061 GB Notification: Performance of sort global known variables: time 9.1e-08/0.4081, allocations: 0 / 1.364 GB, free: 12.77 MB / 1.061 GB Notification: Performance of remove unused functions: time 0.0004598/0.4086, allocations: 67.98 kB / 1.364 GB, free: 12.7 MB / 1.061 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 14 (calendarTime2016.hourSampleTrigger,calendarTime2016.daySampleTrigger,$whenCondition2,$whenCondition1,calendarTime2016.year,calendarTime2016.month,calendarTime2016.day,calendarTime2016.hour,calendarTime2016.weekDay,calendarTime2016.daysSinceEpoch,calendarTime2016.yearIndex,calendarTime2016.epochLastMonth,calendarTime2016.firstHourSampling,calendarTime2016.firstDaySampling) * Number of discrete states: 9 (calendarTime2016.firstDaySampling,calendarTime2016.daysSinceEpoch,calendarTime2016.weekDay,calendarTime2016.yearIndex,calendarTime2016.year,calendarTime2016.epochLastMonth,calendarTime2016.month,calendarTime2016.firstHourSampling,calendarTime2016.hour) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (16): * Single equations (assignments): 6 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 10 * 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 0.002241/0.4108, allocations: 1.029 MB / 1.365 GB, free: 11.64 MB / 1.061 GB Notification: Performance of simCode: created initialization part: time 0.001508/0.4123, allocations: 402.5 kB / 1.365 GB, free: 11.23 MB / 1.061 GB Notification: Performance of simCode: created event and clocks part: time 3.166e-06/0.4123, allocations: 0 / 1.365 GB, free: 11.23 MB / 1.061 GB Notification: Performance of simCode: created simulation system equations: time 0.000731/0.413, allocations: 120.2 kB / 1.365 GB, free: 11.11 MB / 1.061 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0004053/0.4134, allocations: 33.09 kB / 1.366 GB, free: 11.07 MB / 1.061 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004532/0.418, allocations: 2.778 MB / 1.368 GB, free: 8.164 MB / 1.061 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.000476/0.4184, allocations: 0.7669 MB / 1.369 GB, free: 7.367 MB / 1.061 GB Notification: Performance of simCode: alias equations: time 6.977e-05/0.4185, allocations: 17.08 kB / 1.369 GB, free: 7.352 MB / 1.061 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 6.449e-05/0.4186, allocations: 27.42 kB / 1.369 GB, free: 7.324 MB / 1.061 GB Notification: Performance of SimCode: time 1.473e-06/0.4186, allocations: 3.938 kB / 1.369 GB, free: 7.32 MB / 1.061 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.03711/0.4557, allocations: 6.425 MB / 1.375 GB, free: 0.9141 MB / 1.061 GB Notification: Performance of buildModelFMU: Generate platform static: time 11.04/11.49, allocations: 12.8 kB / 1.375 GB, free: 0.9062 MB / 1.061 GB " [Timeout remaining time 288] (rm -f Buildings_latest_Buildings.Utilities.Time.Examples.CalendarTime.pipe ; mkfifo Buildings_latest_Buildings.Utilities.Time.Examples.CalendarTime.pipe ; head -c 1048576 < Buildings_latest_Buildings.Utilities.Time.Examples.CalendarTime.pipe >> ../files/Buildings_latest_Buildings.Utilities.Time.Examples.CalendarTime.sim & python3 -m fmpy simulate --output-file Buildings_latest_Buildings.Utilities.Time.Examples.CalendarTime_res.csv --start-time 0 --stop-time 1e+08 --timeout 800 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 643.381 Buildings_latest_Buildings_Utilities_Time_Examples_CalendarTime.fmu > Buildings_latest_Buildings.Utilities.Time.Examples.CalendarTime.pipe 2>&1) [Timeout 840.0] diffSimulationResults("Buildings_latest_Buildings.Utilities.Time.Examples.CalendarTime_res.csv","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Utilities_Time_Examples_CalendarTime.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Utilities.Time.Examples.CalendarTime.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 300] "Error: Could not read variable calendarTime2016.year in file Buildings_latest_Buildings.Utilities.Time.Examples.CalendarTime_res.csv. Warning: Get data of variable calendarTime2016.year from file Buildings_latest_Buildings.Utilities.Time.Examples.CalendarTime_res.csv failed! Error: Could not read variable calendarTime2016.month in file Buildings_latest_Buildings.Utilities.Time.Examples.CalendarTime_res.csv. Warning: Get data of variable calendarTime2016.month from file Buildings_latest_Buildings.Utilities.Time.Examples.CalendarTime_res.csv failed! Error: Could not read variable calendarTime2016.hour in file Buildings_latest_Buildings.Utilities.Time.Examples.CalendarTime_res.csv. Warning: Get data of variable calendarTime2016.hour from file Buildings_latest_Buildings.Utilities.Time.Examples.CalendarTime_res.csv failed! " [Timeout remaining time 299] Reference file matches [Calling sys.exit(0), Time elapsed: 23.42947635499968]