Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Utilities.Plotters.Validation.PlotterActivationLocalInput.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 0.001738/0.001738, allocations: 114.5 kB / 18.94 MB, free: 2.934 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 0.002039/0.002039, allocations: 217 kB / 22.25 MB, free: 5.082 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 1.478/1.478, allocations: 230.6 MB / 256 MB, free: 8.02 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 3.297/3.297, allocations: 0.505 GB / 0.8101 GB, free: 22.07 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.Plotters.Validation.PlotterActivationLocalInput,fileNamePrefix="Buildings_latest_Buildings_Utilities_Plotters_Validation_PlotterActivationLocalInput",fmuType="me",version="2.0",platforms={"static"})
"" <> buildModelFMU(Buildings.Utilities.Plotters.Validation.PlotterActivationLocalInput,fileNamePrefix="Buildings_latest_Buildings_Utilities_Plotters_Validation_PlotterActivationLocalInput",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 0.002656/0.002656, allocations: 70.98 kB / 1.177 GB, free: 17.07 MB / 0.9044 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.3965/0.3991, allocations: 180.2 MB / 1.353 GB, free: 8.484 MB / 1.045 GB
Notification: Performance of NFInst.instantiate(Buildings.Utilities.Plotters.Validation.PlotterActivationLocalInput): time 0.003308/0.4024, allocations: 1.772 MB / 1.355 GB, free: 6.699 MB / 1.045 GB
Notification: Performance of NFInst.instExpressions: time 0.001696/0.4041, allocations: 0.9597 MB / 1.356 GB, free: 5.738 MB / 1.045 GB
Notification: Performance of NFInst.updateImplicitVariability: time 8.033e-05/0.4042, allocations: 0 / 1.356 GB, free: 5.738 MB / 1.045 GB
Notification: Performance of NFTyping.typeComponents: time 0.0002/0.4044, allocations: 19.73 kB / 1.356 GB, free: 5.719 MB / 1.045 GB
Notification: Performance of NFTyping.typeBindings: time 0.0004191/0.4048, allocations: 127.4 kB / 1.356 GB, free: 5.594 MB / 1.045 GB
Notification: Performance of NFTyping.typeClassSections: time 0.000393/0.4052, allocations: 171.6 kB / 1.356 GB, free: 5.426 MB / 1.045 GB
Notification: Performance of NFFlatten.flatten: time 0.0003158/0.4056, allocations: 239.3 kB / 1.356 GB, free: 5.191 MB / 1.045 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.00015/0.4057, allocations: 38 kB / 1.356 GB, free: 5.152 MB / 1.045 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.000158/0.4059, allocations: 111.7 kB / 1.356 GB, free: 5.043 MB / 1.045 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.01328/0.4191, allocations: 1.67 MB / 1.358 GB, free: 3.809 MB / 1.045 GB
Notification: Performance of NFPackage.collectConstants: time 8.066e-05/0.4192, allocations: 16 kB / 1.358 GB, free: 3.793 MB / 1.045 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.0001463/0.4194, allocations: 39.98 kB / 1.358 GB, free: 3.754 MB / 1.045 GB
Notification: Performance of NFScalarize.scalarize: time 8.072e-05/0.4194, allocations: 47.83 kB / 1.358 GB, free: 3.707 MB / 1.045 GB
Notification: Performance of NFVerifyModel.verify: time 0.0001541/0.4196, allocations: 95.5 kB / 1.358 GB, free: 3.613 MB / 1.045 GB
Notification: Performance of NFConvertDAE.convert: time 0.0005012/0.4201, allocations: 215.2 kB / 1.358 GB, free: 3.402 MB / 1.045 GB
Notification: Performance of FrontEnd - DAE generated: time 9.387e-06/0.4201, allocations: 4 kB / 1.358 GB, free: 3.398 MB / 1.045 GB
Notification: Performance of FrontEnd: time 2.554e-06/0.4201, allocations: 3.938 kB / 1.358 GB, free: 3.395 MB / 1.045 GB
Notification: Performance of Transformations before backend: time 9.378e-06/0.4201, allocations: 0 / 1.358 GB, free: 3.395 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: 20
 * Number of variables: 20
Notification: Performance of Generate backend data structure: time 0.001069/0.4212, allocations: 496.7 kB / 1.359 GB, free: 2.867 MB / 1.045 GB
Notification: Performance of prepare preOptimizeDAE: time 5.442e-05/0.4212, allocations: 8.031 kB / 1.359 GB, free: 2.859 MB / 1.045 GB
Notification: Performance of preOpt introduceOutputAliases (simulation): time 6.325e-05/0.4213, allocations: 42.73 kB / 1.359 GB, free: 2.809 MB / 1.045 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 7.969e-05/0.4214, allocations: 24.78 kB / 1.359 GB, free: 2.785 MB / 1.045 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.0003588/0.4217, allocations: 185.6 kB / 1.359 GB, free: 2.578 MB / 1.045 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.294e-05/0.4218, allocations: 8 kB / 1.359 GB, free: 2.57 MB / 1.045 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 3.873e-05/0.4218, allocations: 16 kB / 1.359 GB, free: 2.555 MB / 1.045 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.0002851/0.4221, allocations: 113.2 kB / 1.359 GB, free: 2.434 MB / 1.045 GB
Notification: Performance of preOpt findStateOrder (simulation): time 1.531e-05/0.4221, allocations: 0 / 1.359 GB, free: 2.434 MB / 1.045 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.738e-05/0.4221, allocations: 11.98 kB / 1.359 GB, free: 2.422 MB / 1.045 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.052e-05/0.4221, allocations: 4 kB / 1.359 GB, free: 2.418 MB / 1.045 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0001626/0.4223, allocations: 55.88 kB / 1.359 GB, free: 2.363 MB / 1.045 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.001043/0.4234, allocations: 0.5074 MB / 1.36 GB, free: 1.809 MB / 1.045 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.0001978/0.4236, allocations: 89.27 kB / 1.36 GB, free: 1.703 MB / 1.045 GB
Notification: Performance of preOpt resolveLoops (simulation): time 7.016e-05/0.4236, allocations: 37.77 kB / 1.36 GB, free: 1.66 MB / 1.045 GB
Notification: Performance of preOpt evalFunc (simulation): time 2.825e-05/0.4236, allocations: 3.938 kB / 1.36 GB, free: 1.656 MB / 1.045 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0003859/0.424, allocations: 125 kB / 1.36 GB, free: 1.516 MB / 1.045 GB
Notification: Performance of pre-optimization done (n=15): time 1.293e-06/0.424, allocations: 0 / 1.36 GB, free: 1.516 MB / 1.045 GB
Notification: Performance of matching and sorting (n=15): time 0.0004264/0.4245, allocations: 169.4 kB / 1.36 GB, free: 1.344 MB / 1.045 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 7.125e-05/0.4245, allocations: 81.05 kB / 1.36 GB, free: 1.246 MB / 1.045 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0002537/0.4248, allocations: 210.5 kB / 1.36 GB, free: 1.027 MB / 1.045 GB
Notification: Performance of collectPreVariables (initialization): time 3.936e-05/0.4248, allocations: 33.7 kB / 1.36 GB, free: 0.9883 MB / 1.045 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0001137/0.4249, allocations: 120.6 kB / 1.36 GB, free: 0.8672 MB / 1.045 GB
Notification: Performance of collectInitialBindings (initialization): time 4.332e-05/0.425, allocations: 39.73 kB / 1.36 GB, free: 0.8281 MB / 1.045 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 9.888e-05/0.4251, allocations: 61.59 kB / 1.361 GB, free: 0.7617 MB / 1.045 GB
Notification: Performance of setup shared object (initialization): time 0.0001746/0.4253, allocations: 326.8 kB / 1.361 GB, free: 444 kB / 1.045 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 7.3e-05/0.4253, allocations: 35.98 kB / 1.361 GB, free: 408 kB / 1.045 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002677/0.4256, allocations: 138.8 kB / 1.361 GB, free: 236 kB / 1.045 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0001663/0.4258, allocations: 111.6 kB / 1.361 GB, free: 104 kB / 1.045 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.796e-06/0.4258, allocations: 4 kB / 1.361 GB, free: 100 kB / 1.045 GB
Notification: Performance of matching and sorting (n=22) (initialization): time 0.0002922/0.4261, allocations: 161.4 kB / 1.361 GB, free: 15.93 MB / 1.061 GB
Notification: Performance of prepare postOptimizeDAE: time 1.959e-05/0.4261, allocations: 4 kB / 1.361 GB, free: 15.93 MB / 1.061 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.61e-06/0.4261, allocations: 0 / 1.361 GB, free: 15.93 MB / 1.061 GB
Notification: Performance of postOpt tearingSystem (initialization): time 1.888e-05/0.4261, allocations: 4 kB / 1.361 GB, free: 15.93 MB / 1.061 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001041/0.4262, allocations: 23.92 kB / 1.361 GB, free: 15.9 MB / 1.061 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.219e-05/0.4262, allocations: 4 kB / 1.361 GB, free: 15.9 MB / 1.061 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002117/0.4264, allocations: 32.03 kB / 1.361 GB, free: 15.87 MB / 1.061 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 1.356e-05/0.4264, allocations: 8 kB / 1.361 GB, free: 15.86 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: 19 (plotConfiguration.tActivateLast,$PRE.plotConfiguration.tActivateLast,plotConfiguration.active,$whenCondition2,booPul.pulseStart,$PRE.booPul.pulseStart,booPul.y,scaDel.sampleTrigger,scaDel.tActivateLast,$PRE.scaDel.tActivateLast,scaDel.active,sca.sampleTrigger,sca.tActivateLast,$PRE.sca.tActivateLast,sca.active,$whenCondition1,$whenCondition3,$whenCondition4,plotConfiguration.activate_internal)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (22):
 * Single equations (assignments): 22
 * 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 0.0001785/0.4266, allocations: 155.4 kB / 1.362 GB, free: 15.7 MB / 1.061 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 3.421e-05/0.4267, allocations: 19.91 kB / 1.362 GB, free: 15.68 MB / 1.061 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 5.858e-05/0.4267, allocations: 21.45 kB / 1.362 GB, free: 15.65 MB / 1.061 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.296e-06/0.4267, allocations: 0 / 1.362 GB, free: 15.65 MB / 1.061 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 1.01e-05/0.4267, allocations: 4 kB / 1.362 GB, free: 15.65 MB / 1.061 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.29e-06/0.4267, allocations: 0 / 1.362 GB, free: 15.65 MB / 1.061 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0006377/0.4274, allocations: 427.2 kB / 1.362 GB, free: 15.18 MB / 1.061 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.418e-06/0.4274, allocations: 4 kB / 1.362 GB, free: 15.18 MB / 1.061 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 2.235e-05/0.4274, allocations: 3.984 kB / 1.362 GB, free: 15.18 MB / 1.061 GB
Notification: Performance of postOpt tearingSystem (simulation): time 1.974e-06/0.4274, allocations: 7.938 kB / 1.362 GB, free: 15.17 MB / 1.061 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.148e-05/0.4274, allocations: 3.938 kB / 1.362 GB, free: 15.16 MB / 1.061 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 2.264e-06/0.4274, allocations: 0 / 1.362 GB, free: 15.16 MB / 1.061 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.093e-06/0.4274, allocations: 4 kB / 1.362 GB, free: 15.16 MB / 1.061 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0003398/0.4278, allocations: 243.1 kB / 1.362 GB, free: 14.91 MB / 1.061 GB
Notification: Performance of postOpt removeConstants (simulation): time 2.793e-05/0.4278, allocations: 11.91 kB / 1.362 GB, free: 14.89 MB / 1.061 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 3.427e-05/0.4278, allocations: 7.938 kB / 1.362 GB, free: 14.89 MB / 1.061 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0001381/0.428, allocations: 11.98 kB / 1.362 GB, free: 14.88 MB / 1.061 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 8.045e-05/0.428, allocations: 19.97 kB / 1.362 GB, free: 14.86 MB / 1.061 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.705e-05/0.4281, allocations: 11.98 kB / 1.362 GB, free: 14.84 MB / 1.061 GB
Notification: Performance of sorting global known variables: time 0.0001503/0.4282, allocations: 140.5 kB / 1.362 GB, free: 14.71 MB / 1.061 GB
Notification: Performance of sort global known variables: time 1.1e-07/0.4282, allocations: 4 kB / 1.362 GB, free: 14.7 MB / 1.061 GB
Notification: Performance of remove unused functions: time 0.0003191/0.4285, allocations: 47.94 kB / 1.362 GB, free: 14.66 MB / 1.061 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 2
 * Number of states: 0 ()
 * Number of discrete variables: 14 (sca.sampleTrigger,scaDel.sampleTrigger,booPul.y,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,sca.active,sca.tActivateLast,scaDel.active,scaDel.tActivateLast,booPul.pulseStart,plotConfiguration.active,plotConfiguration.tActivateLast)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (15):
 * Single equations (assignments): 11
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 4
 * 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 0.001006/0.4295, allocations: 0.8359 MB / 1.363 GB, free: 13.81 MB / 1.061 GB
Notification: Performance of simCode: created initialization part: time 0.0002418/0.4298, allocations: 102.6 kB / 1.363 GB, free: 13.71 MB / 1.061 GB
Notification: Performance of simCode: created event and clocks part: time 3.947e-06/0.4298, allocations: 4 kB / 1.363 GB, free: 13.71 MB / 1.061 GB
Notification: Performance of simCode: created simulation system equations: time 0.000106/0.4299, allocations: 47.91 kB / 1.363 GB, free: 13.66 MB / 1.061 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.000523/0.4304, allocations: 55.88 kB / 1.363 GB, free: 13.61 MB / 1.061 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0023/0.4327, allocations: 1.934 MB / 1.365 GB, free: 11.55 MB / 1.061 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0003721/0.4331, allocations: 0.7242 MB / 1.366 GB, free: 10.8 MB / 1.061 GB
Notification: Performance of simCode: alias equations: time 8.931e-05/0.4332, allocations: 17.64 kB / 1.366 GB, free: 10.78 MB / 1.061 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001048/0.4333, allocations: 59.41 kB / 1.366 GB, free: 10.72 MB / 1.061 GB
Notification: Performance of SimCode: time 3.2e-07/0.4333, allocations: 3.938 kB / 1.366 GB, free: 10.71 MB / 1.061 GB
Notification: Performance of buildModelFMU: Generate the FMI files: time 0.03583/0.4691, allocations: 5.742 MB / 1.372 GB, free: 5.129 MB / 1.061 GB
Notification: Performance of buildModelFMU: Generate platform static: time 11.07/11.54, allocations: 4.25 kB / 1.372 GB, free: 5.129 MB / 1.061 GB
"
[Timeout remaining time 288]
(rm -f Buildings_latest_Buildings.Utilities.Plotters.Validation.PlotterActivationLocalInput.pipe ; mkfifo Buildings_latest_Buildings.Utilities.Plotters.Validation.PlotterActivationLocalInput.pipe ; head -c 1048576 < Buildings_latest_Buildings.Utilities.Plotters.Validation.PlotterActivationLocalInput.pipe >> ../files/Buildings_latest_Buildings.Utilities.Plotters.Validation.PlotterActivationLocalInput.sim & python3 -m fmpy simulate  --output-file Buildings_latest_Buildings.Utilities.Plotters.Validation.PlotterActivationLocalInput_res.csv --start-time 0 --stop-time 10 --timeout 800 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.004 Buildings_latest_Buildings_Utilities_Plotters_Validation_PlotterActivationLocalInput.fmu > Buildings_latest_Buildings.Utilities.Plotters.Validation.PlotterActivationLocalInput.pipe 2>&1) [Timeout 840.0]
diffSimulationResults("Buildings_latest_Buildings.Utilities.Plotters.Validation.PlotterActivationLocalInput_res.csv","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Utilities_Plotters_Validation_PlotterActivationLocalInput.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Utilities.Plotters.Validation.PlotterActivationLocalInput.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 300]
"Error: Could not read variable plotConfiguration.active in file Buildings_latest_Buildings.Utilities.Plotters.Validation.PlotterActivationLocalInput_res.csv.
Warning: Get data of variable plotConfiguration.active from file Buildings_latest_Buildings.Utilities.Plotters.Validation.PlotterActivationLocalInput_res.csv failed!
Error: Could not read variable sca.active in file Buildings_latest_Buildings.Utilities.Plotters.Validation.PlotterActivationLocalInput_res.csv.
Warning: Get data of variable sca.active from file Buildings_latest_Buildings.Utilities.Plotters.Validation.PlotterActivationLocalInput_res.csv failed!
Error: Could not read variable scaDel.active in file Buildings_latest_Buildings.Utilities.Plotters.Validation.PlotterActivationLocalInput_res.csv.
Warning: Get data of variable scaDel.active from file Buildings_latest_Buildings.Utilities.Plotters.Validation.PlotterActivationLocalInput_res.csv failed!
"
[Timeout remaining time 300]
Reference file matches
[Calling sys.exit(0), Time elapsed: 18.64212880099967]