Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ThermofluidStream_ThermofluidStream.Topology.Tests.TestSplitter.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 0.001923/0.001923, allocations: 103.6 kB / 18.95 MB, free: 2.688 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 0.002822/0.002822, allocations: 216.8 kB / 22.24 MB, free: 5.242 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 1.531/1.531, allocations: 230.6 MB / 256 MB, free: 7.805 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermofluidStream 1.2.0/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermofluidStream 1.2.0/package.mo): time 0.9426/0.9426, allocations: 94.63 MB / 407.1 MB, free: 8.902 MB / 318.1 MB " [Timeout remaining time 179] Using package ThermofluidStream with version 1.2.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermofluidStream 1.2.0/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(ThermofluidStream.Topology.Tests.TestSplitter,fileNamePrefix="ThermofluidStream_ThermofluidStream_Topology_Tests_TestSplitter",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(ThermofluidStream.Topology.Tests.TestSplitter,fileNamePrefix="ThermofluidStream_ThermofluidStream_Topology_Tests_TestSplitter",fmuType="me",version="2.0",platforms={"static"}) [Timeout 660] "Notification: ThermofluidStream 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: ThermofluidStream requested package Complex of version 4.0.0. Complex 4.1.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.002599/0.002599, allocations: 89.28 kB / 0.5549 GB, free: 38.55 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1723/0.1749, allocations: 73.06 MB / 0.6263 GB, free: 188 kB / 462.1 MB Notification: Performance of NFInst.instantiate(ThermofluidStream.Topology.Tests.TestSplitter): time 0.1879/0.3628, allocations: 121.9 MB / 0.7453 GB, free: 5.777 MB / 0.5762 GB Notification: Performance of NFInst.instExpressions: time 0.005174/0.368, allocations: 3.83 MB / 0.7491 GB, free: 1.938 MB / 0.5762 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.000415/0.3684, allocations: 27.75 kB / 0.7491 GB, free: 1.91 MB / 0.5762 GB Notification: Performance of NFTyping.typeComponents: time 0.0006753/0.369, allocations: 143.1 kB / 0.7493 GB, free: 1.77 MB / 0.5762 GB Notification: Performance of NFTyping.typeBindings: time 0.0006565/0.3697, allocations: 206.7 kB / 0.7494 GB, free: 1.566 MB / 0.5762 GB Notification: Performance of NFTyping.typeClassSections: time 0.0004552/0.3702, allocations: 135.6 kB / 0.7496 GB, free: 1.434 MB / 0.5762 GB Notification: Performance of NFFlatten.flatten: time 0.0005614/0.3707, allocations: 406.2 kB / 0.75 GB, free: 1.035 MB / 0.5762 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0002177/0.3709, allocations: 69.86 kB / 0.75 GB, free: 0.9688 MB / 0.5762 GB Notification: Performance of NFEvalConstants.evaluate: time 0.000436/0.3714, allocations: 195.1 kB / 0.7502 GB, free: 0.7773 MB / 0.5762 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0002763/0.3716, allocations: 167.2 kB / 0.7504 GB, free: 0.6133 MB / 0.5762 GB Notification: Performance of NFPackage.collectConstants: time 3.375e-05/0.3717, allocations: 16 kB / 0.7504 GB, free: 0.5977 MB / 0.5762 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0005192/0.3722, allocations: 239.6 kB / 0.7506 GB, free: 372 kB / 0.5762 GB Notification: Performance of NFScalarize.scalarize: time 7.302e-05/0.3723, allocations: 51.78 kB / 0.7507 GB, free: 320 kB / 0.5762 GB Notification: Performance of NFVerifyModel.verify: time 0.000131/0.3724, allocations: 115.3 kB / 0.7508 GB, free: 204 kB / 0.5762 GB Notification: Performance of NFConvertDAE.convert: time 0.5194/0.8918, allocations: 378.8 kB / 0.7511 GB, free: 4.387 MB / 0.5762 GB Notification: Performance of FrontEnd - DAE generated: time 9.858e-06/0.8918, allocations: 0 / 0.7511 GB, free: 4.387 MB / 0.5762 GB Notification: Performance of FrontEnd: time 3.146e-06/0.8918, allocations: 0.5156 kB / 0.7511 GB, free: 4.387 MB / 0.5762 GB Notification: Performance of Transformations before backend: time 1.413e-05/0.8918, allocations: 0.5625 kB / 0.7511 GB, free: 4.387 MB / 0.5762 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 45 * Number of variables: 45 Notification: Performance of Generate backend data structure: time 0.001362/0.8932, allocations: 0.5373 MB / 0.7517 GB, free: 20.01 MB / 0.5919 GB Notification: Performance of prepare preOptimizeDAE: time 6.064e-05/0.8932, allocations: 12.41 kB / 0.7517 GB, free: 20.01 MB / 0.5919 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 6.811e-05/0.8933, allocations: 51.2 kB / 0.7517 GB, free: 19.97 MB / 0.5919 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 9.297e-05/0.8934, allocations: 40.55 kB / 0.7518 GB, free: 19.95 MB / 0.5919 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0006387/0.894, allocations: 308.8 kB / 0.7521 GB, free: 19.78 MB / 0.5919 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.352e-05/0.894, allocations: 11.66 kB / 0.7521 GB, free: 19.78 MB / 0.5919 GB Notification: Performance of preOpt expandDerOperator (simulation): time 5.46e-05/0.8941, allocations: 24.02 kB / 0.7521 GB, free: 19.78 MB / 0.5919 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0004883/0.8946, allocations: 238.6 kB / 0.7523 GB, free: 19.72 MB / 0.5919 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.35e-05/0.8946, allocations: 1.875 kB / 0.7523 GB, free: 19.72 MB / 0.5919 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.407e-05/0.8946, allocations: 8.938 kB / 0.7523 GB, free: 19.72 MB / 0.5919 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.157e-05/0.8946, allocations: 4.531 kB / 0.7523 GB, free: 19.72 MB / 0.5919 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0002852/0.8949, allocations: 125.9 kB / 0.7525 GB, free: 19.72 MB / 0.5919 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.001342/0.8963, allocations: 0.6844 MB / 0.7531 GB, free: 19.37 MB / 0.5919 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0003975/0.8967, allocations: 124.2 kB / 0.7532 GB, free: 19.34 MB / 0.5919 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0001327/0.8968, allocations: 63.38 kB / 0.7533 GB, free: 19.34 MB / 0.5919 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0001031/0.8969, allocations: 14.47 kB / 0.7533 GB, free: 19.34 MB / 0.5919 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.883e-05/0.8969, allocations: 37.89 kB / 0.7534 GB, free: 19.3 MB / 0.5919 GB Notification: Performance of pre-optimization done (n=15): time 1.523e-06/0.8969, allocations: 0 / 0.7534 GB, free: 19.3 MB / 0.5919 GB Notification: Performance of matching and sorting (n=16): time 0.001693/0.8986, allocations: 0.6273 MB / 0.754 GB, free: 19.05 MB / 0.5919 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.699e-05/0.8987, allocations: 52.66 kB / 0.754 GB, free: 18.99 MB / 0.5919 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0004662/0.8991, allocations: 342.5 kB / 0.7543 GB, free: 18.89 MB / 0.5919 GB Notification: Performance of collectPreVariables (initialization): time 2.689e-05/0.8992, allocations: 29.33 kB / 0.7544 GB, free: 18.86 MB / 0.5919 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001422/0.8993, allocations: 168.6 kB / 0.7545 GB, free: 18.77 MB / 0.5919 GB Notification: Performance of collectInitialBindings (initialization): time 5.989e-05/0.8994, allocations: 64.52 kB / 0.7546 GB, free: 18.73 MB / 0.5919 GB Notification: Performance of simplifyInitialFunctions (initialization): time 5.846e-05/0.8994, allocations: 32.92 kB / 0.7546 GB, free: 18.71 MB / 0.5919 GB Notification: Performance of setup shared object (initialization): time 0.000185/0.8996, allocations: 344.2 kB / 0.755 GB, free: 18.4 MB / 0.5919 GB Notification: Performance of preBalanceInitialSystem (initialization): time 9.675e-05/0.8997, allocations: 46.5 kB / 0.755 GB, free: 18.4 MB / 0.5919 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0001084/0.8998, allocations: 70.3 kB / 0.7551 GB, free: 18.38 MB / 0.5919 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0002009/0.9, allocations: 121.8 kB / 0.7552 GB, free: 18.37 MB / 0.5919 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.863e-06/0.9, allocations: 1.938 kB / 0.7552 GB, free: 18.37 MB / 0.5919 GB Notification: Performance of matching and sorting (n=19) (initialization): time 0.0005584/0.9006, allocations: 275.2 kB / 0.7554 GB, free: 18.3 MB / 0.5919 GB Notification: Performance of prepare postOptimizeDAE: time 2.045e-05/0.9006, allocations: 6.375 kB / 0.7555 GB, free: 18.3 MB / 0.5919 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.594e-06/0.9006, allocations: 1.906 kB / 0.7555 GB, free: 18.3 MB / 0.5919 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.000403/0.901, allocations: 91.89 kB / 0.7555 GB, free: 18.29 MB / 0.5919 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001046/0.9011, allocations: 22.86 kB / 0.7556 GB, free: 18.29 MB / 0.5919 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002317/0.9034, allocations: 1.825 MB / 0.7573 GB, free: 17.06 MB / 0.5919 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0001348/0.9036, allocations: 9.938 kB / 0.7574 GB, free: 17.06 MB / 0.5919 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 1.637e-05/0.9036, allocations: 3.844 kB / 0.7574 GB, free: 17.06 MB / 0.5919 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 (11): * Single equations (assignments): 10 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(3,6,77.8%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0001843/0.9038, allocations: 145.2 kB / 0.7575 GB, free: 16.95 MB / 0.5919 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 6.611e-05/0.9038, allocations: 35.45 kB / 0.7575 GB, free: 16.93 MB / 0.5919 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0005429/0.9044, allocations: 279.1 kB / 0.7578 GB, free: 16.85 MB / 0.5919 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.336e-06/0.9044, allocations: 1.719 kB / 0.7578 GB, free: 16.85 MB / 0.5919 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.019e-06/0.9044, allocations: 6.219 kB / 0.7578 GB, free: 16.84 MB / 0.5919 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.779e-06/0.9044, allocations: 1.391 kB / 0.7578 GB, free: 16.84 MB / 0.5919 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0008786/0.9053, allocations: 0.5676 MB / 0.7584 GB, free: 16.54 MB / 0.5919 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.847e-06/0.9053, allocations: 1.906 kB / 0.7584 GB, free: 16.54 MB / 0.5919 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 4.265e-05/0.9053, allocations: 13.42 kB / 0.7584 GB, free: 16.54 MB / 0.5919 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0002779/0.9056, allocations: 95.8 kB / 0.7585 GB, free: 16.53 MB / 0.5919 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.899e-05/0.9056, allocations: 9.031 kB / 0.7585 GB, free: 16.53 MB / 0.5919 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.002126/0.9077, allocations: 1.833 MB / 0.7603 GB, free: 15.3 MB / 0.5919 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.376e-06/0.9077, allocations: 6.406 kB / 0.7603 GB, free: 15.3 MB / 0.5919 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0006251/0.9084, allocations: 405.5 kB / 0.7607 GB, free: 15.11 MB / 0.5919 GB Notification: Performance of postOpt removeConstants (simulation): time 6.113e-05/0.9084, allocations: 29.59 kB / 0.7607 GB, free: 15.09 MB / 0.5919 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 3.916e-05/0.9085, allocations: 15.81 kB / 0.7607 GB, free: 15.09 MB / 0.5919 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0001187/0.9086, allocations: 1.344 kB / 0.7607 GB, free: 15.09 MB / 0.5919 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 4.431e-05/0.9086, allocations: 18.45 kB / 0.7607 GB, free: 15.09 MB / 0.5919 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.044e-05/0.9086, allocations: 7.188 kB / 0.7607 GB, free: 15.09 MB / 0.5919 GB Notification: Performance of sorting global known variables: time 0.0002805/0.9089, allocations: 255.9 kB / 0.761 GB, free: 15.01 MB / 0.5919 GB Notification: Performance of sort global known variables: time 8e-08/0.9089, allocations: 0.9375 kB / 0.761 GB, free: 15.01 MB / 0.5919 GB Notification: Performance of remove unused functions: time 0.0003987/0.9093, allocations: 74.22 kB / 0.761 GB, free: 15.01 MB / 0.5919 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * Number of states: 3 (sink.inlet.m_flow,sink1.inlet.m_flow,sink2.inlet.m_flow) * 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 (5): * 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: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(3,6,77.8%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.001077/0.9104, allocations: 1.006 MB / 0.762 GB, free: 14.29 MB / 0.5919 GB Notification: Performance of simCode: created initialization part: time 0.0006562/0.911, allocations: 292.2 kB / 0.7623 GB, free: 14.17 MB / 0.5919 GB Notification: Performance of simCode: created event and clocks part: time 3.457e-06/0.911, allocations: 2.75 kB / 0.7623 GB, free: 14.17 MB / 0.5919 GB Notification: Performance of simCode: created simulation system equations: time 0.0004066/0.9114, allocations: 235.8 kB / 0.7625 GB, free: 14.05 MB / 0.5919 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0006792/0.9121, allocations: 105.3 kB / 0.7626 GB, free: 14.04 MB / 0.5919 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004199/0.9163, allocations: 3.119 MB / 0.7657 GB, free: 12.56 MB / 0.5919 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.000257/0.9166, allocations: 174.6 kB / 0.7658 GB, free: 12.48 MB / 0.5919 GB Notification: Performance of simCode: alias equations: time 0.0001788/0.9168, allocations: 38.09 kB / 0.7659 GB, free: 12.47 MB / 0.5919 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.000144/0.9169, allocations: 104 kB / 0.766 GB, free: 12.46 MB / 0.5919 GB Notification: Performance of SimCode: time 1.142e-06/0.9169, allocations: 0.5469 kB / 0.766 GB, free: 12.46 MB / 0.5919 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.05091/0.9678, allocations: 9.977 MB / 0.7757 GB, free: 11.07 MB / 0.5919 GB Notification: Performance of buildModelFMU: Generate platform static: time 12.6/13.57, allocations: 4 kB / 0.7757 GB, free: 11.06 MB / 0.5919 GB " [Timeout remaining time 646] (rm -f ThermofluidStream_ThermofluidStream.Topology.Tests.TestSplitter.pipe ; mkfifo ThermofluidStream_ThermofluidStream.Topology.Tests.TestSplitter.pipe ; head -c 1048576 < ThermofluidStream_ThermofluidStream.Topology.Tests.TestSplitter.pipe >> ../files/ThermofluidStream_ThermofluidStream.Topology.Tests.TestSplitter.sim & python3 -m fmpy simulate --output-file ThermofluidStream_ThermofluidStream.Topology.Tests.TestSplitter_res.csv --start-time 0 --stop-time 1 --timeout 1200 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.001 ThermofluidStream_ThermofluidStream_Topology_Tests_TestSplitter.fmu > ThermofluidStream_ThermofluidStream.Topology.Tests.TestSplitter.pipe 2>&1) [Timeout 1260.0] diffSimulationResults("ThermofluidStream_ThermofluidStream.Topology.Tests.TestSplitter_res.csv","/mnt/ReferenceFiles/ThermofluidStream-main-regression/ReferenceData/ThermofluidStream.Topology.Tests.TestSplitter_ref.mat","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/ThermofluidStream_ThermofluidStream.Topology.Tests.TestSplitter.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 660] "Error: Could not read variable Time in file ThermofluidStream_ThermofluidStream.Topology.Tests.TestSplitter_res.csv. Warning: Get data of variable Time from file ThermofluidStream_ThermofluidStream.Topology.Tests.TestSplitter_res.csv failed! Error: Could not read variable splitterN.inlet.m_flow in file ThermofluidStream_ThermofluidStream.Topology.Tests.TestSplitter_res.csv. Warning: Get data of variable splitterN.inlet.m_flow from file ThermofluidStream_ThermofluidStream.Topology.Tests.TestSplitter_res.csv failed! Error: Could not read variable splitterN.outlets[2].m_flow in file ThermofluidStream_ThermofluidStream.Topology.Tests.TestSplitter_res.csv. Warning: Get data of variable splitterN.outlets[2].m_flow from file ThermofluidStream_ThermofluidStream.Topology.Tests.TestSplitter_res.csv failed! Error: Could not read variable splitterN.outlets[3].m_flow in file ThermofluidStream_ThermofluidStream.Topology.Tests.TestSplitter_res.csv. Warning: Get data of variable splitterN.outlets[3].m_flow from file ThermofluidStream_ThermofluidStream.Topology.Tests.TestSplitter_res.csv failed! " [Timeout remaining time 660] Reference file matches [Calling sys.exit(0), Time elapsed: 17.77839528908953]