Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep.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 0.0009379/0.0009379, allocations: 76.81 kB / 20.75 MB, free: 3.734 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 0.0009703/0.0009703, allocations: 161 kB / 24.17 MB, free: 324 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 0.9201/0.9201, allocations: 177.1 MB / 204.6 MB, free: 5.484 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 1.833/1.833, allocations: 389.6 MB / 0.6354 GB, free: 12.29 MB / 0.6042 GB
"
[Timeout remaining time 178]
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.Airflow.Multizone.Examples.CO2TransportStep,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep")
translateModel(Buildings.Airflow.Multizone.Examples.CO2TransportStep,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep") [Timeout 300]
"Notification: Performance of FrontEnd - loaded program: time 1.493e-06/1.493e-06, allocations: 0 / 0.7752 GB, free: 5.34 MB / 0.7292 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 1.116e-05/1.265e-05, allocations: 2.969 kB / 0.7752 GB, free: 5.336 MB / 0.7292 GB
Notification: Performance of NFInst.instantiate(Buildings.Airflow.Multizone.Examples.CO2TransportStep): time 0.1525/0.1525, allocations: 161.3 MB / 0.9327 GB, free: 3.648 MB / 0.8855 GB
Notification: Performance of NFInst.instExpressions: time 0.01251/0.165, allocations: 9.694 MB / 0.9422 GB, free: 9.93 MB / 0.9011 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.001509/0.1665, allocations: 103.2 kB / 0.9423 GB, free: 9.828 MB / 0.9011 GB
Notification: Performance of NFTyping.typeComponents: time 0.001149/0.1676, allocations: 0.6476 MB / 0.9429 GB, free: 9.176 MB / 0.9011 GB
Notification: Performance of NFTyping.typeBindings: time 0.004033/0.1717, allocations: 2.925 MB / 0.9458 GB, free: 6.234 MB / 0.9011 GB
Notification: Performance of NFTyping.typeClassSections: time 0.002591/0.1743, allocations: 1.727 MB / 0.9475 GB, free: 4.504 MB / 0.9011 GB
Notification: Performance of NFFlatten.flatten: time 0.006077/0.1803, allocations: 7.381 MB / 0.9547 GB, free: 13.1 MB / 0.9167 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.003339/0.1837, allocations: 2.331 MB / 0.957 GB, free: 10.77 MB / 0.9167 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.004832/0.1885, allocations: 4.035 MB / 0.9609 GB, free: 6.84 MB / 0.9167 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.002366/0.1909, allocations: 2.423 MB / 0.9633 GB, free: 4.41 MB / 0.9167 GB
Notification: Performance of NFPackage.collectConstants: time 0.0003621/0.1912, allocations: 340 kB / 0.9636 GB, free: 4.078 MB / 0.9167 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.001486/0.1927, allocations: 0.9944 MB / 0.9646 GB, free: 3.078 MB / 0.9167 GB
Notification: Performance of NFScalarize.scalarize: time 0.0009402/0.1937, allocations: 1.601 MB / 0.9661 GB, free: 1.473 MB / 0.9167 GB
Notification: Performance of NFVerifyModel.verify: time 0.001235/0.1949, allocations: 1.384 MB / 0.9675 GB, free: 88 kB / 0.9167 GB
Notification: Performance of NFConvertDAE.convert: time 0.00289/0.1978, allocations: 3.415 MB / 0.9708 GB, free: 12.66 MB / 0.9323 GB
Notification: Performance of FrontEnd - DAE generated: time 5.169e-06/0.1978, allocations: 0 / 0.9708 GB, free: 12.66 MB / 0.9323 GB
Notification: Performance of FrontEnd: time 1.673e-06/0.1978, allocations: 0 / 0.9708 GB, free: 12.66 MB / 0.9323 GB
Notification: Performance of Transformations before backend: time 4.401e-05/0.1978, allocations: 0 / 0.9708 GB, free: 12.66 MB / 0.9323 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 709
 * Number of variables: 709
Notification: Performance of Generate backend data structure: time 0.004164/0.202, allocations: 3.59 MB / 0.9743 GB, free: 9.016 MB / 0.9323 GB
Notification: Performance of prepare preOptimizeDAE: time 3.582e-05/0.202, allocations: 13.34 kB / 0.9743 GB, free: 9.004 MB / 0.9323 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.003512/0.2055, allocations: 1.524 MB / 0.9758 GB, free: 7.477 MB / 0.9323 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.001658/0.2072, allocations: 1.34 MB / 0.9771 GB, free: 6.082 MB / 0.9323 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001104/0.2073, allocations: 205.4 kB / 0.9773 GB, free: 5.879 MB / 0.9323 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002902/0.2076, allocations: 287.9 kB / 0.9776 GB, free: 5.598 MB / 0.9323 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.002409/0.21, allocations: 2.583 MB / 0.9801 GB, free: 2.805 MB / 0.9323 GB
Notification: Performance of preOpt findStateOrder (simulation): time 4.199e-05/0.2101, allocations: 0 / 0.9801 GB, free: 2.805 MB / 0.9323 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001719/0.2102, allocations: 123.9 kB / 0.9803 GB, free: 2.684 MB / 0.9323 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001128/0.2103, allocations: 141.3 kB / 0.9804 GB, free: 2.543 MB / 0.9323 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001459/0.2118, allocations: 1.087 MB / 0.9814 GB, free: 1.426 MB / 0.9323 GB
Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts.
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.006677/0.2185, allocations: 7.149 MB / 0.9884 GB, free: 10.12 MB / 0.948 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.001382/0.2199, allocations: 1.194 MB / 0.9896 GB, free: 8.922 MB / 0.948 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0005697/0.2204, allocations: 0.5389 MB / 0.9901 GB, free: 8.383 MB / 0.948 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0001615/0.2206, allocations: 69.95 kB / 0.9902 GB, free: 8.312 MB / 0.948 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.000832/0.2214, allocations: 1.028 MB / 0.9912 GB, free: 7.191 MB / 0.948 GB
Notification: Performance of pre-optimization done (n=213): time 3.376e-06/0.2214, allocations: 4 kB / 0.9912 GB, free: 7.188 MB / 0.948 GB
Notification: Performance of matching and sorting (n=213): time 0.001679/0.2231, allocations: 1.225 MB / 0.9924 GB, free: 5.961 MB / 0.948 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 4.069e-05/0.2231, allocations: 81.41 kB / 0.9925 GB, free: 5.867 MB / 0.948 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0006939/0.2238, allocations: 1.104 MB / 0.9935 GB, free: 4.754 MB / 0.948 GB
Notification: Performance of collectPreVariables (initialization): time 0.000105/0.2239, allocations: 61.7 kB / 0.9936 GB, free: 4.688 MB / 0.948 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0004584/0.2244, allocations: 0.974 MB / 0.9946 GB, free: 3.703 MB / 0.948 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0003952/0.2248, allocations: 0.7667 MB / 0.9953 GB, free: 2.93 MB / 0.948 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003941/0.2252, allocations: 383.8 kB / 0.9957 GB, free: 2.547 MB / 0.948 GB
Notification: Performance of setup shared object (initialization): time 6.558e-05/0.2253, allocations: 305.1 kB / 0.996 GB, free: 2.246 MB / 0.948 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004188/0.2257, allocations: 321.1 kB / 0.9963 GB, free: 1.922 MB / 0.948 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.000659/0.2263, allocations: 0.9058 MB / 0.9972 GB, free: 0.7891 MB / 0.948 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.001146/0.2275, allocations: 1.261 MB / 0.9984 GB, free: 15.35 MB / 0.9636 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.344e-06/0.2275, allocations: 4 kB / 0.9984 GB, free: 15.34 MB / 0.9636 GB
Notification: Performance of matching and sorting (n=283) (initialization): time 0.001403/0.2289, allocations: 1.285 MB / 0.9996 GB, free: 14.04 MB / 0.9636 GB
Notification: Performance of prepare postOptimizeDAE: time 3.451e-05/0.2289, allocations: 37.89 kB / 0.9997 GB, free: 14 MB / 0.9636 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.278e-05/0.2289, allocations: 16 kB / 0.9997 GB, free: 13.98 MB / 0.9636 GB
Notification: Performance of postOpt tearingSystem (initialization): time 2.276e-05/0.229, allocations: 24 kB / 0.9997 GB, free: 13.96 MB / 0.9636 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001271/0.2302, allocations: 0.5578 MB / 1 GB, free: 13.4 MB / 0.9636 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.942e-05/0.2303, allocations: 35.88 kB / 1 GB, free: 13.36 MB / 0.9636 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0008871/0.2311, allocations: 230.6 kB / 1.001 GB, free: 13.14 MB / 0.9636 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001105/0.2312, allocations: 71.97 kB / 1.001 GB, free: 13.07 MB / 0.9636 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 57
 * Number of states: 0 ()
 * Number of discrete variables: 5 (pulse.count,$PRE.pulse.count,pulse.T_start,$PRE.pulse.T_start,$whenCondition1)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (282):
 * Single equations (assignments): 281
 * Array equations: 0
 * Algorithm blocks: 1
 * 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 0.00038/0.2316, allocations: 244 kB / 1.001 GB, free: 12.82 MB / 0.9636 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002323/0.2319, allocations: 199.8 kB / 1.001 GB, free: 12.62 MB / 0.9636 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001306/0.2332, allocations: 1.167 MB / 1.002 GB, free: 11.43 MB / 0.9636 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.147e-05/0.2332, allocations: 20 kB / 1.002 GB, free: 11.41 MB / 0.9636 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 2.966e-06/0.2332, allocations: 4 kB / 1.002 GB, free: 11.41 MB / 0.9636 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0009297/0.2341, allocations: 0.9917 MB / 1.003 GB, free: 10.36 MB / 0.9636 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.00312/0.2372, allocations: 2.7 MB / 1.006 GB, free: 7.57 MB / 0.9636 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.031e-06/0.2372, allocations: 4 kB / 1.006 GB, free: 7.566 MB / 0.9636 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001443/0.2387, allocations: 0.5785 MB / 1.006 GB, free: 6.984 MB / 0.9636 GB
Notification: Performance of postOpt tearingSystem (simulation): time 8.626e-06/0.2387, allocations: 8 kB / 1.006 GB, free: 6.977 MB / 0.9636 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 9.954e-05/0.2388, allocations: 55.95 kB / 1.006 GB, free: 6.922 MB / 0.9636 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 8.536e-06/0.2388, allocations: 11.94 kB / 1.006 GB, free: 6.91 MB / 0.9636 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.495e-06/0.2388, allocations: 4 kB / 1.006 GB, free: 6.906 MB / 0.9636 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001851/0.2407, allocations: 1.742 MB / 1.008 GB, free: 5.105 MB / 0.9636 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0004829/0.2411, allocations: 330.1 kB / 1.008 GB, free: 4.781 MB / 0.9636 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001688/0.2413, allocations: 47.98 kB / 1.008 GB, free: 4.734 MB / 0.9636 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0007008/0.242, allocations: 99.98 kB / 1.009 GB, free: 4.637 MB / 0.9636 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002032/0.2422, allocations: 157.6 kB / 1.009 GB, free: 4.48 MB / 0.9636 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 8.573e-05/0.2423, allocations: 51.95 kB / 1.009 GB, free: 4.43 MB / 0.9636 GB
Notification: Performance of sorting global known variables: time 0.0003749/0.2427, allocations: 0.5435 MB / 1.009 GB, free: 3.887 MB / 0.9636 GB
Notification: Performance of sort global known variables: time 6e-08/0.2427, allocations: 0 / 1.009 GB, free: 3.887 MB / 0.9636 GB
Notification: Performance of remove unused functions: time 0.001261/0.2439, allocations: 0.9706 MB / 1.01 GB, free: 2.914 MB / 0.9636 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 11
 * Number of states: 16 (volEas.dynBal.medium.Xi[1],volEas.dynBal.U,volEas.dynBal.m,volEas.dynBal.mC[1],oriOutBot.mExc,oriOutTop.mExc,oriWesTop.mExc,volWes.dynBal.medium.Xi[1],volWes.dynBal.U,volWes.dynBal.m,volWes.dynBal.mC[1],oriEasTop.mExc,volTop.dynBal.medium.Xi[1],volTop.dynBal.U,volTop.dynBal.m,volTop.dynBal.mC[1])
 * Number of discrete variables: 3 ($whenCondition1,pulse.T_start,pulse.count)
 * Number of discrete states: 1 (pulse.count)
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (217):
 * Single equations (assignments): 215
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 2
 * 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 0.0003086/0.2442, allocations: 195.7 kB / 1.01 GB, free: 2.711 MB / 0.9636 GB
Notification: Performance of simCode: created initialization part: time 0.001231/0.2455, allocations: 1.152 MB / 1.012 GB, free: 1.539 MB / 0.9636 GB
Notification: Performance of simCode: created event and clocks part: time 1.89e-05/0.2455, allocations: 20.56 kB / 1.012 GB, free: 1.52 MB / 0.9636 GB
Notification: Performance of simCode: created simulation system equations: time 0.0006122/0.2461, allocations: 0.5858 MB / 1.012 GB, free: 0.9336 MB / 0.9636 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002307/0.2484, allocations: 1.244 MB / 1.013 GB, free: 15.71 MB / 0.9792 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00494/0.2533, allocations: 4.651 MB / 1.018 GB, free: 10.96 MB / 0.9792 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004313/0.2538, allocations: 0.6113 MB / 1.019 GB, free: 10.32 MB / 0.9792 GB
Notification: Performance of simCode: alias equations: time 0.001085/0.2549, allocations: 402 kB / 1.019 GB, free: 9.93 MB / 0.9792 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001632/0.2565, allocations: 0.8093 MB / 1.02 GB, free: 9.102 MB / 0.9792 GB
Notification: Performance of SimCode: time 1.172e-06/0.2565, allocations: 0 / 1.02 GB, free: 9.102 MB / 0.9792 GB
Notification: Performance of Templates: time 0.4099/0.6664, allocations: 50.12 MB / 1.069 GB, free: 139.3 MB / 1.01 GB
"
[Timeout remaining time 299]
make -j1 -f Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep.makefile [Timeout 300]
(rm -f Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep.pipe ; mkfifo Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep.pipe ; head -c 1048576 < Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep.pipe >> ../files/Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep.sim & (cd run_cvode && ../Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep -abortSlowSimulation -alarm=240  -lv LOG_STATS -inputPath=.. -s cvode) > Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep.pipe 2>&1) [Timeout 240]
(rm -f Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep_gbode.pipe ; mkfifo Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep_gbode.pipe ; head -c 1048576 < Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep_gbode.pipe >> /var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep_gbode.sim & (cd run_gbode && ../Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep -abortSlowSimulation -alarm=240  -lv LOG_STATS -inputPath=.. -s gbode -gbm=radauIIA3) > Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep_gbode.pipe 2>&1) [Timeout 240]
(rm -f Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep_ida.pipe ; mkfifo Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep_ida.pipe ; head -c 1048576 < Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep_ida.pipe >> /var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep_ida.sim & (cd run_ida && ../Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep -abortSlowSimulation -alarm=240  -lv LOG_STATS -inputPath=.. -s ida) > Buildings_13_Buildings.Airflow.Multizone.Examples.CO2TransportStep_ida.pipe 2>&1) [Timeout 240]
[Calling sys.exit(0), Time elapsed: 6.393712191842496]