Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ThermofluidStream_dev_ThermofluidStream.Boundaries.Tests.Reservoir.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001547/0.001547, allocations: 108.3 kB / 17.96 MB, free: 4.039 MB / 14.72 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001739/0.001739, allocations: 200.4 kB / 21.22 MB, free: 0.793 MB / 14.72 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.51/1.51, allocations: 225.6 MB / 249.9 MB, free: 13.36 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermofluidStream 1.2.0-main/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermofluidStream 1.2.0-main/package.mo): time 0.7878/0.7878, allocations: 94.59 MB / 399.7 MB, free: 15.79 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-main/package.mo) Using package Modelica with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo) Using package Complex with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo) Using package ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Running command: "" <> buildModelFMU(ThermofluidStream.Boundaries.Tests.Reservoir,fileNamePrefix="ThermofluidStream_dev_ThermofluidStream_Boundaries_Tests_Reservoir",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(ThermofluidStream.Boundaries.Tests.Reservoir,fileNamePrefix="ThermofluidStream_dev_ThermofluidStream_Boundaries_Tests_Reservoir",fmuType="me",version="2.0",platforms={"static"}) [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 0.002376/0.002376, allocations: 85.62 kB / 0.5453 GB, free: 43.21 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1349/0.1373, allocations: 71.85 MB / 0.6154 GB, free: 9.082 MB / 462.1 MB Notification: Performance of NFInst.instantiate(ThermofluidStream.Boundaries.Tests.Reservoir): time 0.04456/0.1819, allocations: 40.05 MB / 0.6545 GB, free: 0.8867 MB / 494.1 MB Notification: Performance of NFInst.instExpressions: time 0.01323/0.1951, allocations: 8.779 MB / 0.6631 GB, free: 8.082 MB / 0.4981 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001267/0.1963, allocations: 39.69 kB / 0.6631 GB, free: 8.043 MB / 0.4981 GB Notification: Performance of NFTyping.typeComponents: time 0.001494/0.1978, allocations: 0.5316 MB / 0.6637 GB, free: 7.508 MB / 0.4981 GB Notification: Performance of NFTyping.typeBindings: time 0.004054/0.2019, allocations: 1.344 MB / 0.665 GB, free: 6.156 MB / 0.4981 GB Notification: Performance of NFTyping.typeClassSections: time 0.002596/0.2045, allocations: 0.8909 MB / 0.6658 GB, free: 5.266 MB / 0.4981 GB Notification: Performance of NFFlatten.flatten: time 0.003175/0.2077, allocations: 1.996 MB / 0.6678 GB, free: 3.258 MB / 0.4981 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0004604/0.2081, allocations: 160.3 kB / 0.6679 GB, free: 3.086 MB / 0.4981 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002869/0.211, allocations: 1.152 MB / 0.6691 GB, free: 1.93 MB / 0.4981 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001232/0.2122, allocations: 0.7466 MB / 0.6698 GB, free: 1.18 MB / 0.4981 GB Notification: Performance of NFPackage.collectConstants: time 0.0002311/0.2125, allocations: 96 kB / 0.6699 GB, free: 1.086 MB / 0.4981 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002634/0.2151, allocations: 0.8621 MB / 0.6707 GB, free: 228 kB / 0.4981 GB Notification: Performance of NFScalarize.scalarize: time 0.0003629/0.2155, allocations: 274.8 kB / 0.671 GB, free: 15.95 MB / 0.5137 GB Notification: Performance of NFVerifyModel.verify: time 0.0008787/0.2163, allocations: 0.6217 MB / 0.6716 GB, free: 15.33 MB / 0.5137 GB Notification: Performance of NFConvertDAE.convert: time 0.003572/0.2199, allocations: 1.845 MB / 0.6734 GB, free: 13.48 MB / 0.5137 GB Notification: Performance of FrontEnd - DAE generated: time 4.679e-06/0.2199, allocations: 0 / 0.6734 GB, free: 13.48 MB / 0.5137 GB Notification: Performance of FrontEnd: time 1.473e-06/0.2199, allocations: 0 / 0.6734 GB, free: 13.48 MB / 0.5137 GB Notification: Performance of Transformations before backend: time 2.685e-05/0.2199, allocations: 0 / 0.6734 GB, free: 13.48 MB / 0.5137 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 211 * Number of variables: 211 Notification: Performance of Generate backend data structure: time 0.003669/0.2236, allocations: 1.704 MB / 0.6751 GB, free: 11.72 MB / 0.5137 GB Notification: Performance of prepare preOptimizeDAE: time 4.918e-05/0.2237, allocations: 12.02 kB / 0.6751 GB, free: 11.71 MB / 0.5137 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001888/0.2238, allocations: 139.3 kB / 0.6752 GB, free: 11.56 MB / 0.5137 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0004269/0.2243, allocations: 148 kB / 0.6753 GB, free: 11.42 MB / 0.5137 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001732/0.226, allocations: 0.8478 MB / 0.6762 GB, free: 10.53 MB / 0.5137 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001229/0.2261, allocations: 99.69 kB / 0.6763 GB, free: 10.42 MB / 0.5137 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001608/0.2263, allocations: 84 kB / 0.6764 GB, free: 10.34 MB / 0.5137 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001969/0.2283, allocations: 0.9917 MB / 0.6773 GB, free: 9.312 MB / 0.5137 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.35e-05/0.2283, allocations: 0 / 0.6773 GB, free: 9.312 MB / 0.5137 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.63e-05/0.2284, allocations: 40 kB / 0.6774 GB, free: 9.273 MB / 0.5137 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.265e-05/0.2284, allocations: 20 kB / 0.6774 GB, free: 9.254 MB / 0.5137 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001865/0.2303, allocations: 0.8861 MB / 0.6782 GB, free: 8.367 MB / 0.5137 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.006783/0.237, allocations: 4.609 MB / 0.6827 GB, free: 3.367 MB / 0.5137 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002166/0.2392, allocations: 0.952 MB / 0.6837 GB, free: 2.383 MB / 0.5137 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0008164/0.24, allocations: 417.1 kB / 0.6841 GB, free: 1.973 MB / 0.5137 GB Notification: Performance of preOpt evalFunc (simulation): time 0.004368/0.2444, allocations: 2.987 MB / 0.687 GB, free: 14.63 MB / 0.5294 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.026e-05/0.2444, allocations: 51 kB / 0.687 GB, free: 14.57 MB / 0.5294 GB Notification: Performance of pre-optimization done (n=99): time 2.555e-06/0.2444, allocations: 0 / 0.687 GB, free: 14.57 MB / 0.5294 GB Notification: Performance of matching and sorting (n=112): time 0.01041/0.2549, allocations: 4.282 MB / 0.6912 GB, free: 10.06 MB / 0.5294 GB Notification: Performance of inlineWhenForInitialization (initialization): time 7.451e-05/0.2549, allocations: 90.11 kB / 0.6913 GB, free: 9.957 MB / 0.5294 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001133/0.2561, allocations: 0.7637 MB / 0.692 GB, free: 9.168 MB / 0.5294 GB Notification: Performance of collectPreVariables (initialization): time 0.0001002/0.2562, allocations: 45.7 kB / 0.6921 GB, free: 9.117 MB / 0.5294 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004091/0.2566, allocations: 477.2 kB / 0.6925 GB, free: 8.645 MB / 0.5294 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003617/0.2569, allocations: 412.4 kB / 0.6929 GB, free: 8.238 MB / 0.5294 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003124/0.2573, allocations: 190.9 kB / 0.6931 GB, free: 8.047 MB / 0.5294 GB Notification: Performance of setup shared object (initialization): time 0.0001658/0.2574, allocations: 345.9 kB / 0.6935 GB, free: 7.703 MB / 0.5294 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0008715/0.2583, allocations: 382.4 kB / 0.6938 GB, free: 7.328 MB / 0.5294 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001046/0.2593, allocations: 0.5444 MB / 0.6944 GB, free: 6.73 MB / 0.5294 GB Warning: It was not possible to determine if the initialization problem is consistent, because of not evaluable parameters/start values during compile time: conductionElement.deltaE_system = $START.conductionElement.deltaE_system (0.0 = $START.conductionElement.deltaE_system) Notification: Performance of analyzeInitialSystem (initialization): time 0.002164/0.2615, allocations: 1.061 MB / 0.6954 GB, free: 5.594 MB / 0.5294 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.909e-06/0.2615, allocations: 0 / 0.6954 GB, free: 5.594 MB / 0.5294 GB Notification: Performance of matching and sorting (n=136) (initialization): time 0.003499/0.265, allocations: 1.455 MB / 0.6968 GB, free: 4.109 MB / 0.5294 GB Notification: Performance of prepare postOptimizeDAE: time 2.216e-05/0.265, allocations: 12.06 kB / 0.6968 GB, free: 4.098 MB / 0.5294 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.217e-05/0.265, allocations: 11.92 kB / 0.6968 GB, free: 4.086 MB / 0.5294 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001229/0.2663, allocations: 346.7 kB / 0.6972 GB, free: 3.723 MB / 0.5294 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0007965/0.2671, allocations: 195.7 kB / 0.6973 GB, free: 3.531 MB / 0.5294 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01211/0.2792, allocations: 12.59 MB / 0.7096 GB, free: 5.824 MB / 0.545 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0009129/0.2801, allocations: 35.98 kB / 0.7097 GB, free: 5.789 MB / 0.545 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001669/0.2803, allocations: 47.98 kB / 0.7097 GB, free: 5.742 MB / 0.545 GB Warning: The initial conditions are over specified. The following 1 initial equations are redundant, so they are removed from the initialization system: conductionElement.deltaE_system = $START.conductionElement.deltaE_system. Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 18 * 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 (110): * Single equations (assignments): 101 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 1 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 8 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 8 systems {(1,2,100.0%), (2,5,100.0%), (1,2,100.0%), (1,2,100.0%), (1,1,100.0%), (1,6,100.0%), (1,4,100.0%), (1,2,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0006089/0.2809, allocations: 257.6 kB / 0.71 GB, free: 5.48 MB / 0.545 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003362/0.2812, allocations: 119.3 kB / 0.7101 GB, free: 5.363 MB / 0.545 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003995/0.2852, allocations: 1.596 MB / 0.7116 GB, free: 3.719 MB / 0.545 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.981e-05/0.2852, allocations: 12 kB / 0.7117 GB, free: 3.707 MB / 0.545 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.788e-05/0.2852, allocations: 4 kB / 0.7117 GB, free: 3.703 MB / 0.545 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.578e-05/0.2853, allocations: 7.922 kB / 0.7117 GB, free: 3.695 MB / 0.545 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.005793/0.2911, allocations: 2.718 MB / 0.7143 GB, free: 0.8867 MB / 0.545 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.864e-05/0.2911, allocations: 7.938 kB / 0.7143 GB, free: 0.8789 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0008128/0.2919, allocations: 175.8 kB / 0.7145 GB, free: 0.707 MB / 0.545 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.001257/0.2931, allocations: 358.8 kB / 0.7148 GB, free: 340 kB / 0.545 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001458/0.2933, allocations: 35.97 kB / 0.7149 GB, free: 304 kB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.01225/0.3055, allocations: 12.6 MB / 0.7272 GB, free: 2.574 MB / 0.5606 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.521e-06/0.3055, allocations: 8.094 kB / 0.7272 GB, free: 2.566 MB / 0.5606 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.005275/0.3108, allocations: 2.084 MB / 0.7292 GB, free: 448 kB / 0.5606 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0005151/0.3113, allocations: 180.3 kB / 0.7294 GB, free: 248 kB / 0.5606 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002735/0.3116, allocations: 35.92 kB / 0.7294 GB, free: 212 kB / 0.5606 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0009171/0.3125, allocations: 51.95 kB / 0.7295 GB, free: 160 kB / 0.5606 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0003855/0.3129, allocations: 96.81 kB / 0.7296 GB, free: 60 kB / 0.5606 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0002059/0.3131, allocations: 39.97 kB / 0.7296 GB, free: 20 kB / 0.5606 GB Notification: Performance of sorting global known variables: time 0.001416/0.3145, allocations: 0.5388 MB / 0.7301 GB, free: 15.47 MB / 0.5762 GB Notification: Performance of sort global known variables: time 2.91e-07/0.3145, allocations: 0 / 0.7301 GB, free: 15.47 MB / 0.5762 GB Notification: Performance of remove unused functions: time 0.003425/0.318, allocations: 471.3 kB / 0.7306 GB, free: 15.01 MB / 0.5762 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * Number of states: 8 (reservoir1.M,reservoir1.U_med,pump.m_flow,conductionElement.h,reservoir.M,reservoir.U_med,flowResistance1.inlet.m_flow,flowResistance2.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 (91): * Single equations (assignments): 82 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 1 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 8 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 6 systems {(1,6,100.0%), (1,4,100.0%), (1,1,100.0%), (2,5,100.0%), (1,2,100.0%), (1,2,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 2 systems {(1,2), (1,2)} Notification: Performance of Backend phase and start with SimCode phase: time 0.009034/0.327, allocations: 2.998 MB / 0.7335 GB, free: 11.95 MB / 0.5762 GB Notification: Performance of simCode: created initialization part: time 0.005825/0.3328, allocations: 2.009 MB / 0.7355 GB, free: 9.832 MB / 0.5762 GB Notification: Performance of simCode: created event and clocks part: time 2.947e-05/0.3328, allocations: 0 / 0.7355 GB, free: 9.832 MB / 0.5762 GB Notification: Performance of simCode: created simulation system equations: time 0.004138/0.337, allocations: 1.555 MB / 0.737 GB, free: 8.172 MB / 0.5762 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003189/0.3402, allocations: 363.1 kB / 0.7373 GB, free: 7.828 MB / 0.5762 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.3764/0.7166, allocations: 9.782 MB / 0.7469 GB, free: 120.9 MB / 0.5762 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0007524/0.7173, allocations: 1.087 MB / 0.748 GB, free: 120.2 MB / 0.5762 GB Notification: Performance of simCode: alias equations: time 0.0009043/0.7182, allocations: 205.1 kB / 0.7481 GB, free: 120.2 MB / 0.5762 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0005964/0.7188, allocations: 457.9 kB / 0.7486 GB, free: 120.2 MB / 0.5762 GB Notification: Performance of SimCode: time 1.453e-06/0.7188, allocations: 0 / 0.7486 GB, free: 120.2 MB / 0.5762 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.09464/0.8134, allocations: 35.28 MB / 0.783 GB, free: 99.16 MB / 0.5762 GB Notification: Performance of buildModelFMU: Generate platform static: time 14.51/15.32, allocations: 5.734 kB / 0.783 GB, free: 99.16 MB / 0.5762 GB " [Timeout remaining time 645] (rm -f ThermofluidStream_dev_ThermofluidStream.Boundaries.Tests.Reservoir.pipe ; mkfifo ThermofluidStream_dev_ThermofluidStream.Boundaries.Tests.Reservoir.pipe ; head -c 1048576 < ThermofluidStream_dev_ThermofluidStream.Boundaries.Tests.Reservoir.pipe >> ../files/ThermofluidStream_dev_ThermofluidStream.Boundaries.Tests.Reservoir.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=ThermofluidStream_dev_ThermofluidStream.Boundaries.Tests.Reservoir_res.mat --tempDir=temp_ThermofluidStream_dev_ThermofluidStream_Boundaries_Tests_Reservoir_fmu --startTime=0 --stopTime=10 --stepSize=0.01 --timeout=1200 --tolerance=1e-06 ThermofluidStream_dev_ThermofluidStream_Boundaries_Tests_Reservoir.fmu > ThermofluidStream_dev_ThermofluidStream.Boundaries.Tests.Reservoir.pipe 2>&1) [Timeout 1260.0] diffSimulationResults("ThermofluidStream_dev_ThermofluidStream.Boundaries.Tests.Reservoir_res.mat","/mnt/ReferenceFiles/ThermofluidStream-main-regression/ReferenceData/ThermofluidStream.Boundaries.Tests.Reservoir_ref.mat","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork_2/OpenModelicaLibraryTesting/files/ThermofluidStream_dev_ThermofluidStream.Boundaries.Tests.Reservoir.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 660] "Error: Could not read variable reservoir.m_flow_in in file ThermofluidStream_dev_ThermofluidStream.Boundaries.Tests.Reservoir_res.mat. Warning: Get data of variable reservoir.m_flow_in from file ThermofluidStream_dev_ThermofluidStream.Boundaries.Tests.Reservoir_res.mat failed! Error: Could not read variable reservoir.m_flow_out in file ThermofluidStream_dev_ThermofluidStream.Boundaries.Tests.Reservoir_res.mat. Warning: Get data of variable reservoir.m_flow_out from file ThermofluidStream_dev_ThermofluidStream.Boundaries.Tests.Reservoir_res.mat failed! " [Timeout remaining time 660] Reference file matches [Calling sys.exit(0), Time elapsed: 19.17334105586633]