Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate.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 0.000808/0.000808, allocations: 80.44 kB / 19.17 MB, free: 0.7422 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 0.0008416/0.0008416, allocations: 165.9 kB / 22.46 MB, free: 2.105 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 0.8761/0.8761, allocations: 177.1 MB / 202.8 MB, free: 5.754 MB / 186.7 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.2-maint.11.x/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.2-maint.11.x/package.mo): time 1.678/1.678, allocations: 359 MB / 0.6037 GB, free: 11.08 MB / 0.573 GB " [Timeout remaining time 178] Using package Buildings with version 11.1.2 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.2-maint.11.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: "" <> buildModelFMU(Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate,fileNamePrefix="Buildings_11_Buildings_Fluid_MixingVolumes_Validation_MixingVolumeHeatReverseFlowPrescribedHeatFlowRate",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate,fileNamePrefix="Buildings_11_Buildings_Fluid_MixingVolumes_Validation_MixingVolumeHeatReverseFlowPrescribedHeatFlowRate",fmuType="me",version="2.0",platforms={"static"}) [Timeout 300] "Notification: Performance of FrontEnd - loaded program: time 1.503e-06/1.503e-06, allocations: 0 / 0.9505 GB, free: 3.461 MB / 0.9011 GB Notification: Performance of FrontEnd - Absyn->SCode: time 1.421e-05/1.571e-05, allocations: 6.281 kB / 0.9505 GB, free: 3.453 MB / 0.9011 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate): time 0.5996/0.5996, allocations: 168.3 MB / 1.115 GB, free: 32.98 MB / 0.9948 GB Notification: Performance of NFInst.instExpressions: time 0.006529/0.6061, allocations: 5.432 MB / 1.12 GB, free: 29.28 MB / 0.9948 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0006825/0.6068, allocations: 53.88 kB / 1.12 GB, free: 29.25 MB / 0.9948 GB Notification: Performance of NFTyping.typeComponents: time 0.001138/0.608, allocations: 0.5684 MB / 1.121 GB, free: 28.94 MB / 0.9948 GB Notification: Performance of NFTyping.typeBindings: time 0.002834/0.6108, allocations: 1.733 MB / 1.123 GB, free: 27.97 MB / 0.9948 GB Notification: Performance of NFTyping.typeClassSections: time 0.002124/0.6129, allocations: 1.265 MB / 1.124 GB, free: 27.31 MB / 0.9948 GB Notification: Performance of NFFlatten.flatten: time 0.002168/0.6151, allocations: 2.65 MB / 1.126 GB, free: 26.08 MB / 0.9948 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0007748/0.6159, allocations: 0.6864 MB / 1.127 GB, free: 25.75 MB / 0.9948 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001528/0.6174, allocations: 1.402 MB / 1.128 GB, free: 25.12 MB / 0.9948 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001171/0.6186, allocations: 0.7634 MB / 1.129 GB, free: 24.88 MB / 0.9948 GB Notification: Performance of NFPackage.collectConstants: time 0.0001378/0.6187, allocations: 96.16 kB / 1.129 GB, free: 24.88 MB / 0.9948 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001753/0.6205, allocations: 1.301 MB / 1.131 GB, free: 24.43 MB / 0.9948 GB Notification: Performance of NFScalarize.scalarize: time 0.0003351/0.6208, allocations: 434.5 kB / 1.131 GB, free: 24.23 MB / 0.9948 GB Notification: Performance of NFVerifyModel.verify: time 0.000407/0.6212, allocations: 426.2 kB / 1.131 GB, free: 24.06 MB / 0.9948 GB Notification: Performance of NFConvertDAE.convert: time 0.002171/0.6234, allocations: 2.07 MB / 1.133 GB, free: 23.35 MB / 0.9948 GB Notification: Performance of FrontEnd - DAE generated: time 4.278e-06/0.6234, allocations: 0 / 1.133 GB, free: 23.35 MB / 0.9948 GB Notification: Performance of FrontEnd: time 1.533e-06/0.6234, allocations: 0 / 1.133 GB, free: 23.35 MB / 0.9948 GB Notification: Performance of Transformations before backend: time 1.291e-05/0.6234, allocations: 0.5156 kB / 1.133 GB, free: 23.35 MB / 0.9948 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 187 * Number of variables: 187 Notification: Performance of Generate backend data structure: time 0.001583/0.625, allocations: 1.376 MB / 1.135 GB, free: 22.46 MB / 0.9948 GB Notification: Performance of prepare preOptimizeDAE: time 3.753e-05/0.625, allocations: 13.72 kB / 1.135 GB, free: 22.46 MB / 0.9948 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001187/0.6251, allocations: 125.2 kB / 1.135 GB, free: 22.37 MB / 0.9948 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001457/0.6266, allocations: 422.7 kB / 1.135 GB, free: 22.28 MB / 0.9948 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0009671/0.6275, allocations: 0.7309 MB / 1.136 GB, free: 21.85 MB / 0.9948 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.21e-05/0.6276, allocations: 56.38 kB / 1.136 GB, free: 21.82 MB / 0.9948 GB Notification: Performance of preOpt expandDerOperator (simulation): time 9.492e-05/0.6277, allocations: 77.61 kB / 1.136 GB, free: 21.79 MB / 0.9948 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001334/0.629, allocations: 1.366 MB / 1.137 GB, free: 20.94 MB / 0.9948 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.724e-05/0.629, allocations: 0 / 1.137 GB, free: 20.94 MB / 0.9948 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.858e-05/0.6291, allocations: 36.69 kB / 1.137 GB, free: 20.91 MB / 0.9948 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.406e-05/0.6291, allocations: 28.23 kB / 1.137 GB, free: 20.91 MB / 0.9948 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.00129/0.6304, allocations: 0.8645 MB / 1.138 GB, free: 20.64 MB / 0.9948 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 0.003682/0.6341, allocations: 2.764 MB / 1.141 GB, free: 19.18 MB / 0.9948 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001017/0.6351, allocations: 0.5924 MB / 1.142 GB, free: 18.97 MB / 0.9948 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005006/0.6356, allocations: 323.2 kB / 1.142 GB, free: 18.87 MB / 0.9948 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0001127/0.6357, allocations: 20.09 kB / 1.142 GB, free: 18.87 MB / 0.9948 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.387e-05/0.6358, allocations: 44.69 kB / 1.142 GB, free: 18.82 MB / 0.9948 GB Notification: Performance of pre-optimization done (n=39): time 1.643e-06/0.6358, allocations: 0 / 1.142 GB, free: 18.82 MB / 0.9948 GB Notification: Performance of matching and sorting (n=41): time 0.004747/0.6405, allocations: 2.254 MB / 1.144 GB, free: 17.98 MB / 0.9948 GB Notification: Performance of inlineWhenForInitialization (initialization): time 2.776e-05/0.6405, allocations: 59.72 kB / 1.144 GB, free: 17.92 MB / 0.9948 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0009072/0.6414, allocations: 0.8083 MB / 1.145 GB, free: 17.58 MB / 0.9948 GB Notification: Performance of collectPreVariables (initialization): time 4.251e-05/0.6415, allocations: 34.16 kB / 1.145 GB, free: 17.55 MB / 0.9948 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002367/0.6417, allocations: 452.6 kB / 1.145 GB, free: 17.19 MB / 0.9948 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001094/0.6418, allocations: 151.4 kB / 1.146 GB, free: 17.07 MB / 0.9948 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001484/0.642, allocations: 104 kB / 1.146 GB, free: 17.01 MB / 0.9948 GB Notification: Performance of setup shared object (initialization): time 4.935e-05/0.642, allocations: 325.3 kB / 1.146 GB, free: 16.7 MB / 0.9948 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0005237/0.6425, allocations: 306.1 kB / 1.146 GB, free: 16.61 MB / 0.9948 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005756/0.6431, allocations: 459.9 kB / 1.147 GB, free: 16.35 MB / 0.9948 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 0.003185/0.6463, allocations: 1.802 MB / 1.149 GB, free: 15.75 MB / 0.9948 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.775e-06/0.6463, allocations: 0 / 1.149 GB, free: 15.75 MB / 0.9948 GB Notification: Performance of matching and sorting (n=63) (initialization): time 0.001944/0.6483, allocations: 1.044 MB / 1.15 GB, free: 15.41 MB / 0.9948 GB Notification: Performance of prepare postOptimizeDAE: time 2.185e-05/0.6483, allocations: 7.25 kB / 1.15 GB, free: 15.41 MB / 0.9948 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.958e-06/0.6483, allocations: 2.688 kB / 1.15 GB, free: 15.41 MB / 0.9948 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004648/0.6488, allocations: 188 kB / 1.15 GB, free: 15.36 MB / 0.9948 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004287/0.6492, allocations: 146.7 kB / 1.15 GB, free: 15.34 MB / 0.9948 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002361/0.6515, allocations: 2.111 MB / 1.152 GB, free: 13.81 MB / 0.9948 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004726/0.652, allocations: 53.23 kB / 1.152 GB, free: 13.8 MB / 0.9948 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.669e-05/0.6521, allocations: 22.08 kB / 1.152 GB, free: 13.79 MB / 0.9948 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: 12 * 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 (59): * Single equations (assignments): 58 * 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): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,4)} Notification: Performance of prepare postOptimizeDAE: time 0.0003314/0.6524, allocations: 269.1 kB / 1.152 GB, free: 13.61 MB / 0.9948 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001025/0.6525, allocations: 95.19 kB / 1.152 GB, free: 13.56 MB / 0.9948 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 9.974e-05/0.6526, allocations: 98.19 kB / 1.152 GB, free: 13.49 MB / 0.9948 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.557e-06/0.6526, allocations: 4.969 kB / 1.152 GB, free: 13.49 MB / 0.9948 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.222e-06/0.6526, allocations: 3.938 kB / 1.152 GB, free: 13.49 MB / 0.9948 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.00147/0.6541, allocations: 0.8887 MB / 1.153 GB, free: 13.13 MB / 0.9948 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002972/0.657, allocations: 1.956 MB / 1.155 GB, free: 12.25 MB / 0.9948 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.5e-06/0.6571, allocations: 2.656 kB / 1.155 GB, free: 12.25 MB / 0.9948 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000332/0.6574, allocations: 130.2 kB / 1.155 GB, free: 12.24 MB / 0.9948 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0003213/0.6577, allocations: 188.6 kB / 1.156 GB, free: 12.19 MB / 0.9948 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.427e-05/0.6577, allocations: 13.41 kB / 1.156 GB, free: 12.18 MB / 0.9948 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001871/0.6596, allocations: 2.061 MB / 1.158 GB, free: 10.66 MB / 0.9948 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.027e-06/0.6596, allocations: 3.656 kB / 1.158 GB, free: 10.66 MB / 0.9948 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00204/0.6617, allocations: 1.41 MB / 1.159 GB, free: 10.04 MB / 0.9948 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002457/0.6619, allocations: 166.3 kB / 1.159 GB, free: 9.953 MB / 0.9948 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 6.497e-05/0.662, allocations: 17.67 kB / 1.159 GB, free: 9.945 MB / 0.9948 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003978/0.6624, allocations: 58.25 kB / 1.159 GB, free: 9.938 MB / 0.9948 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 8.161e-05/0.6624, allocations: 43.25 kB / 1.159 GB, free: 9.926 MB / 0.9948 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.331e-05/0.6625, allocations: 30.7 kB / 1.159 GB, free: 9.918 MB / 0.9948 GB Notification: Performance of sorting global known variables: time 0.0005399/0.663, allocations: 0.5547 MB / 1.16 GB, free: 9.691 MB / 0.9948 GB Notification: Performance of sort global known variables: time 6e-08/0.663, allocations: 0 / 1.16 GB, free: 9.691 MB / 0.9948 GB Notification: Performance of remove unused functions: time 0.0007672/0.6638, allocations: 278.2 kB / 1.16 GB, free: 9.664 MB / 0.9948 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 14 * Number of states: 2 (volDyn.dynBal.medium.Xi[1],volDyn.dynBal.U) * 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 (37): * Single equations (assignments): 36 * 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): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,4)} Notification: Performance of Backend phase and start with SimCode phase: time 0.002357/0.6662, allocations: 2.044 MB / 1.162 GB, free: 8.484 MB / 0.9948 GB Notification: Performance of simCode: created initialization part: time 0.001265/0.6674, allocations: 0.7902 MB / 1.163 GB, free: 8.16 MB / 0.9948 GB Notification: Performance of simCode: created event and clocks part: time 4.558e-06/0.6674, allocations: 5.844 kB / 1.163 GB, free: 8.156 MB / 0.9948 GB Notification: Performance of simCode: created simulation system equations: time 0.0005911/0.668, allocations: 440.9 kB / 1.163 GB, free: 7.949 MB / 0.9948 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001465/0.6695, allocations: 0.5541 MB / 1.164 GB, free: 7.785 MB / 0.9948 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.009818/0.6793, allocations: 7.624 MB / 1.171 GB, free: 4.094 MB / 0.9948 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006498/0.68, allocations: 455.5 kB / 1.172 GB, free: 3.957 MB / 0.9948 GB Notification: Performance of simCode: alias equations: time 0.000857/0.6808, allocations: 203.8 kB / 1.172 GB, free: 3.906 MB / 0.9948 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003569/0.6812, allocations: 318.5 kB / 1.172 GB, free: 3.676 MB / 0.9948 GB Notification: Performance of SimCode: time 1.453e-06/0.6812, allocations: 4 kB / 1.172 GB, free: 3.672 MB / 0.9948 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.05052/0.7317, allocations: 30.31 MB / 1.202 GB, free: 6.574 MB / 1.01 GB Notification: Performance of buildModelFMU: Generate platform static: time 8.909/9.641, allocations: 10.23 kB / 1.202 GB, free: 6.566 MB / 1.01 GB " [Timeout remaining time 290] (rm -f Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate.pipe ; mkfifo Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate.pipe ; head -c 1048576 < Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate.pipe >> ../files/Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate_res.mat --tempDir=temp_Buildings_11_Buildings_Fluid_MixingVolumes_Validation_MixingVolumeHeatReverseFlowPrescribedHeatFlowRate_fmu --startTime=0 --stopTime=10 --stepSize=0.004 --timeout=400 --tolerance=1e-06 Buildings_11_Buildings_Fluid_MixingVolumes_Validation_MixingVolumeHeatReverseFlowPrescribedHeatFlowRate.fmu > Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate.pipe 2>&1) [Timeout 420.0] diffSimulationResults("Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_11.x/Buildings_Fluid_MixingVolumes_Validation_MixingVolumeHeatReverseFlowPrescribedHeatFlowRate.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 300] "" [Timeout remaining time 300] Reference file matches [Calling sys.exit(0), Time elapsed: 13.66716801840812]