Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance.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 0.0007777/0.0007777, allocations: 80.44 kB / 19.17 MB, free: 0.7344 MB / 13.93 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 0.0009008/0.0009008, allocations: 165.9 kB / 22.45 MB, free: 2.098 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 0.8704/0.8704, allocations: 177.1 MB / 202.8 MB, free: 5.738 MB / 186.7 MB " [Timeout remaining time 179] 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 1.747/1.747, allocations: 389 MB / 0.633 GB, free: 12.69 MB / 0.6042 GB " [Timeout remaining time 178] Using package Buildings with version 13.0.1 (/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.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance,fileNamePrefix="Buildings_latest_Buildings_Fluid_MixingVolumes_Validation_MixingVolumeTraceSubstance",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance,fileNamePrefix="Buildings_latest_Buildings_Fluid_MixingVolumes_Validation_MixingVolumeTraceSubstance",fmuType="me",version="2.0",platforms={"static"}) [Timeout 300] "Notification: Performance of FrontEnd - loaded program: time 1.342e-06/1.342e-06, allocations: 0 / 0.9997 GB, free: 13.5 MB / 0.9636 GB Notification: Performance of FrontEnd - Absyn->SCode: time 1.03e-05/1.164e-05, allocations: 4.812 kB / 0.9997 GB, free: 13.5 MB / 0.9636 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance): time 0.547/0.547, allocations: 168.2 MB / 1.164 GB, free: 10.02 MB / 1.026 GB Notification: Performance of NFInst.instExpressions: time 0.008344/0.5553, allocations: 5.4 MB / 1.169 GB, free: 6.348 MB / 1.026 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001725/0.5571, allocations: 53.09 kB / 1.169 GB, free: 6.32 MB / 1.026 GB Notification: Performance of NFTyping.typeComponents: time 0.00197/0.559, allocations: 0.5511 MB / 1.17 GB, free: 6.016 MB / 1.026 GB Notification: Performance of NFTyping.typeBindings: time 0.004735/0.5638, allocations: 1.716 MB / 1.171 GB, free: 5.062 MB / 1.026 GB Notification: Performance of NFTyping.typeClassSections: time 0.0035/0.5673, allocations: 1.263 MB / 1.173 GB, free: 4.406 MB / 1.026 GB Notification: Performance of NFFlatten.flatten: time 0.003959/0.5712, allocations: 2.566 MB / 1.175 GB, free: 3.215 MB / 1.026 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001397/0.5726, allocations: 0.7055 MB / 1.176 GB, free: 2.871 MB / 1.026 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003665/0.5763, allocations: 1.542 MB / 1.177 GB, free: 2.184 MB / 1.026 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002229/0.5785, allocations: 0.76 MB / 1.178 GB, free: 1.945 MB / 1.026 GB Notification: Performance of NFPackage.collectConstants: time 0.0003308/0.5788, allocations: 102.1 kB / 1.178 GB, free: 1.945 MB / 1.026 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002918/0.5818, allocations: 1.273 MB / 1.179 GB, free: 1.512 MB / 1.026 GB Notification: Performance of NFScalarize.scalarize: time 0.0008677/0.5826, allocations: 0.5168 MB / 1.18 GB, free: 1.285 MB / 1.026 GB Notification: Performance of NFVerifyModel.verify: time 0.00111/0.5837, allocations: 454.1 kB / 1.18 GB, free: 1.105 MB / 1.026 GB Notification: Performance of NFConvertDAE.convert: time 0.004412/0.5882, allocations: 2.146 MB / 1.182 GB, free: 388 kB / 1.026 GB Notification: Performance of FrontEnd - DAE generated: time 7.384e-06/0.5882, allocations: 1 kB / 1.182 GB, free: 388 kB / 1.026 GB Notification: Performance of FrontEnd: time 1.944e-06/0.5882, allocations: 0 / 1.182 GB, free: 388 kB / 1.026 GB Notification: Performance of Transformations before backend: time 6.201e-05/0.5882, allocations: 0 / 1.182 GB, free: 388 kB / 1.026 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 212 * Number of variables: 212 Notification: Performance of Generate backend data structure: time 0.002952/0.5912, allocations: 1.424 MB / 1.184 GB, free: 15.45 MB / 1.042 GB Notification: Performance of prepare preOptimizeDAE: time 6.135e-05/0.5912, allocations: 10.03 kB / 1.184 GB, free: 15.45 MB / 1.042 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001636/0.5914, allocations: 139.3 kB / 1.184 GB, free: 15.36 MB / 1.042 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001386/0.5928, allocations: 338.5 kB / 1.184 GB, free: 15.27 MB / 1.042 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001331/0.5941, allocations: 0.735 MB / 1.185 GB, free: 14.84 MB / 1.042 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.607e-05/0.5942, allocations: 62.28 kB / 1.185 GB, free: 14.81 MB / 1.042 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001096/0.5943, allocations: 87.73 kB / 1.185 GB, free: 14.78 MB / 1.042 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001688/0.596, allocations: 1.473 MB / 1.187 GB, free: 13.82 MB / 1.042 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.381e-05/0.596, allocations: 4.875 kB / 1.187 GB, free: 13.81 MB / 1.042 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.921e-05/0.5961, allocations: 45.31 kB / 1.187 GB, free: 13.78 MB / 1.042 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.428e-05/0.5961, allocations: 35.55 kB / 1.187 GB, free: 13.78 MB / 1.042 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001233/0.5973, allocations: 0.8215 MB / 1.188 GB, free: 13.52 MB / 1.042 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 0.004532/0.6019, allocations: 3.251 MB / 1.191 GB, free: 11.5 MB / 1.042 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0005406/0.6024, allocations: 359.1 kB / 1.191 GB, free: 11.34 MB / 1.042 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002566/0.6027, allocations: 207.3 kB / 1.191 GB, free: 11.27 MB / 1.042 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0001511/0.6028, allocations: 25.72 kB / 1.191 GB, free: 11.26 MB / 1.042 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.182e-05/0.6029, allocations: 41.11 kB / 1.191 GB, free: 11.22 MB / 1.042 GB Notification: Performance of pre-optimization done (n=36): time 4.429e-06/0.6029, allocations: 0 / 1.191 GB, free: 11.22 MB / 1.042 GB Notification: Performance of matching and sorting (n=38): time 0.002595/0.6055, allocations: 1.273 MB / 1.193 GB, free: 10.54 MB / 1.042 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.2e-05/0.6055, allocations: 62.66 kB / 1.193 GB, free: 10.47 MB / 1.042 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001284/0.6068, allocations: 1.007 MB / 1.194 GB, free: 10.07 MB / 1.042 GB Notification: Performance of collectPreVariables (initialization): time 7.923e-05/0.6069, allocations: 37.92 kB / 1.194 GB, free: 10.03 MB / 1.042 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003118/0.6072, allocations: 0.4966 MB / 1.194 GB, free: 9.629 MB / 1.042 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001333/0.6073, allocations: 142.2 kB / 1.194 GB, free: 9.516 MB / 1.042 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001502/0.6075, allocations: 124.2 kB / 1.194 GB, free: 9.449 MB / 1.042 GB Notification: Performance of setup shared object (initialization): time 8.304e-05/0.6075, allocations: 331.8 kB / 1.195 GB, free: 9.133 MB / 1.042 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003289/0.6079, allocations: 237.2 kB / 1.195 GB, free: 9.059 MB / 1.042 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004275/0.6083, allocations: 472.6 kB / 1.195 GB, free: 8.703 MB / 1.042 GB Warning: It was not possible to determine if the initialization problem is consistent, because of not evaluable parameters/start values during compile time: volDyn.dynBal.medium.p = volDyn.dynBal.p_start (bou.p = volDyn.dynBal.p_start) Notification: Performance of analyzeInitialSystem (initialization): time 0.00161/0.6099, allocations: 1.147 MB / 1.196 GB, free: 8.141 MB / 1.042 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.925e-06/0.6099, allocations: 1.469 kB / 1.196 GB, free: 8.141 MB / 1.042 GB Notification: Performance of matching and sorting (n=74) (initialization): time 0.001116/0.611, allocations: 0.767 MB / 1.197 GB, free: 7.832 MB / 1.042 GB Notification: Performance of prepare postOptimizeDAE: time 2.489e-05/0.6111, allocations: 9.844 kB / 1.197 GB, free: 7.832 MB / 1.042 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.321e-05/0.6111, allocations: 5.562 kB / 1.197 GB, free: 7.832 MB / 1.042 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.407e-05/0.6111, allocations: 17.16 kB / 1.197 GB, free: 7.824 MB / 1.042 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003551/0.6115, allocations: 144 kB / 1.197 GB, free: 7.812 MB / 1.042 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.618e-05/0.6115, allocations: 16.62 kB / 1.197 GB, free: 7.805 MB / 1.042 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007057/0.6122, allocations: 59.69 kB / 1.197 GB, free: 7.789 MB / 1.042 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.786e-05/0.6122, allocations: 29.5 kB / 1.197 GB, free: 7.781 MB / 1.042 GB Warning: The initial conditions are over specified. The following 1 initial equations are redundant, so they are removed from the initialization system: volDyn.dynBal.medium.p = volDyn.dynBal.p_start. Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 25 * 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 (74): * Single equations (assignments): 74 * 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 0.0004855/0.6127, allocations: 317.5 kB / 1.198 GB, free: 7.574 MB / 1.042 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001748/0.6129, allocations: 101.1 kB / 1.198 GB, free: 7.523 MB / 1.042 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0001384/0.613, allocations: 100.2 kB / 1.198 GB, free: 7.469 MB / 1.042 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.64e-06/0.613, allocations: 8.906 kB / 1.198 GB, free: 7.465 MB / 1.042 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.072e-05/0.613, allocations: 3.938 kB / 1.198 GB, free: 7.461 MB / 1.042 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0004994/0.6135, allocations: 0.6725 MB / 1.199 GB, free: 6.914 MB / 1.042 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001992/0.6155, allocations: 1.437 MB / 1.2 GB, free: 6.117 MB / 1.042 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.102e-06/0.6155, allocations: 4.531 kB / 1.2 GB, free: 6.117 MB / 1.042 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002438/0.6158, allocations: 85.03 kB / 1.2 GB, free: 6.109 MB / 1.042 GB Notification: Performance of postOpt tearingSystem (simulation): time 7.945e-06/0.6158, allocations: 5.5 kB / 1.2 GB, free: 6.109 MB / 1.042 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.295e-05/0.6158, allocations: 12.25 kB / 1.2 GB, free: 6.105 MB / 1.042 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 7.403e-06/0.6158, allocations: 11 kB / 1.2 GB, free: 6.102 MB / 1.042 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.599e-06/0.6158, allocations: 6.328 kB / 1.2 GB, free: 6.102 MB / 1.042 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0009383/0.6168, allocations: 0.8364 MB / 1.201 GB, free: 5.555 MB / 1.042 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004146/0.6172, allocations: 161.3 kB / 1.201 GB, free: 5.449 MB / 1.042 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 8.549e-05/0.6173, allocations: 15.23 kB / 1.201 GB, free: 5.441 MB / 1.042 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000389/0.6176, allocations: 36.47 kB / 1.201 GB, free: 5.426 MB / 1.042 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 4.564e-05/0.6177, allocations: 33.48 kB / 1.201 GB, free: 5.406 MB / 1.042 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.052e-05/0.6177, allocations: 28.92 kB / 1.201 GB, free: 5.398 MB / 1.042 GB Notification: Performance of sorting global known variables: time 0.0008258/0.6186, allocations: 0.7178 MB / 1.202 GB, free: 4.988 MB / 1.042 GB Notification: Performance of sort global known variables: time 3.51e-07/0.6186, allocations: 0 / 1.202 GB, free: 4.988 MB / 1.042 GB Notification: Performance of remove unused functions: time 0.0008084/0.6194, allocations: 258.9 kB / 1.202 GB, free: 4.961 MB / 1.042 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 17 * Number of states: 3 (volDyn.dynBal.medium.Xi[1],volDyn.dynBal.U,volDyn.dynBal.mC[1]) * 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 (38): * Single equations (assignments): 38 * 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 0.001228/0.6206, allocations: 1.455 MB / 1.204 GB, free: 3.82 MB / 1.042 GB Notification: Performance of simCode: created initialization part: time 0.0007496/0.6214, allocations: 495.2 kB / 1.204 GB, free: 3.598 MB / 1.042 GB Notification: Performance of simCode: created event and clocks part: time 4.959e-06/0.6214, allocations: 0 / 1.204 GB, free: 3.598 MB / 1.042 GB Notification: Performance of simCode: created simulation system equations: time 0.0001688/0.6215, allocations: 184.1 kB / 1.204 GB, free: 3.516 MB / 1.042 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001766/0.6233, allocations: 0.6157 MB / 1.205 GB, free: 3.203 MB / 1.042 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.008592/0.6319, allocations: 7.568 MB / 1.212 GB, free: 14.36 MB / 1.057 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0003601/0.6323, allocations: 0.4996 MB / 1.213 GB, free: 14.05 MB / 1.057 GB Notification: Performance of simCode: alias equations: time 0.0007396/0.633, allocations: 245.6 kB / 1.213 GB, free: 13.95 MB / 1.057 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003622/0.6334, allocations: 341.5 kB / 1.213 GB, free: 13.68 MB / 1.057 GB Notification: Performance of SimCode: time 9.82e-07/0.6334, allocations: 0 / 1.213 GB, free: 13.68 MB / 1.057 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.03704/0.6704, allocations: 30.76 MB / 1.243 GB, free: 2.059 MB / 1.073 GB Notification: Performance of buildModelFMU: Generate platform static: time 7.027/7.697, allocations: 0 / 1.243 GB, free: 2.059 MB / 1.073 GB " [Timeout remaining time 292] (rm -f Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance.pipe ; mkfifo Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance.pipe ; head -c 1048576 < Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance.pipe >> ../files/Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance.sim & python3 -m fmpy simulate --output-file Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance_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_Fluid_MixingVolumes_Validation_MixingVolumeTraceSubstance.fmu > Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance.pipe 2>&1) [Timeout 840.0] diffSimulationResults("Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance_res.csv","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Fluid_MixingVolumes_Validation_MixingVolumeTraceSubstance.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 300] "Error: Could not read variable volDyn.ports[1].m_flow in file Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance_res.csv. Warning: Get data of variable volDyn.ports[1].m_flow from file Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance_res.csv failed! Error: Could not read variable C_flow.y in file Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance_res.csv. Warning: Get data of variable C_flow.y from file Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance_res.csv failed! Error: Could not read variable volDyn.C[1] in file Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance_res.csv. Warning: Get data of variable volDyn.C[1] from file Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance_res.csv failed! Error: Could not read variable volSte.C[1] in file Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance_res.csv. Warning: Get data of variable volSte.C[1] from file Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance_res.csv failed! " [Timeout remaining time 300] Reference file matches [Calling sys.exit(0), Time elapsed: 11.758781692013144]