Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ModelicaTest_4.1.0-beta.om_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasFixedComposition.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices trunk/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices trunk/package.mo): time 0.001632/0.001632, allocations: 113.1 kB / 21.85 MB, free: 80 kB / 14.72 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex trunk/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex trunk/package.mo): time 0.001918/0.001918, allocations: 209.5 kB / 25.13 MB, free: 3.605 MB / 14.72 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica trunk/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica trunk/package.mo): time 1.419/1.419, allocations: 230.4 MB / 258.7 MB, free: 8.043 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.1.0-beta.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.1.0-beta.om/package.mo): time 0.2244/0.2244, allocations: 46.94 MB / 362.1 MB, free: 4.234 MB / 286.1 MB " [Timeout remaining time 180] Using package ModelicaTest with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.1.0-beta.om/package.mo) Using package Modelica with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica trunk/package.mo) Using package Complex with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex trunk/package.mo) Using package ModelicaServices with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices trunk/package.mo) Running command: translateModel(ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasFixedComposition,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5002,variableFilter="time|volume.medium.p|volume.medium.T",fileNamePrefix="ModelicaTest_4.1.0-beta.om_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasFixedComposition") translateModel(ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasFixedComposition,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5002,variableFilter="time|volume.medium.p|volume.medium.T",fileNamePrefix="ModelicaTest_4.1.0-beta.om_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasFixedComposition") [Timeout 660] "Warning: Requested package Modelica of version 4.1.0, but this package was already loaded with version trunk. OpenModelica cannot reason about compatibility between the two packages since they are not semantic versions. Notification: Performance of FrontEnd - loaded program: time 0.002368/0.002368, allocations: 91.84 kB / 0.4978 GB, free: 7.383 MB / 366.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3171/0.3195, allocations: 66.08 MB / 0.5624 GB, free: 4.254 MB / 398.1 MB Notification: Performance of NFInst.instantiate(ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasFixedComposition): time 0.2203/0.5398, allocations: 178.5 MB / 0.7367 GB, free: 1.035 MB / 0.5606 GB Notification: Performance of NFInst.instExpressions: time 0.37/0.9098, allocations: 6.484 MB / 0.743 GB, free: 1.734 MB / 0.5606 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0008921/0.9107, allocations: 30.41 kB / 0.7431 GB, free: 1.734 MB / 0.5606 GB Notification: Performance of NFTyping.typeComponents: time 0.001366/0.9121, allocations: 433.9 kB / 0.7435 GB, free: 1.727 MB / 0.5606 GB Notification: Performance of NFTyping.typeBindings: time 0.00489/0.917, allocations: 1.813 MB / 0.7453 GB, free: 1.66 MB / 0.5606 GB Notification: Performance of NFTyping.typeClassSections: time 0.003859/0.9208, allocations: 1.536 MB / 0.7468 GB, free: 1.613 MB / 0.5606 GB Notification: Performance of NFFlatten.flatten: time 0.003076/0.9239, allocations: 2.138 MB / 0.7488 GB, free: 1.602 MB / 0.5606 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0008272/0.9247, allocations: 484.8 kB / 0.7493 GB, free: 1.59 MB / 0.5606 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003933/0.9287, allocations: 1.801 MB / 0.7511 GB, free: 1.566 MB / 0.5606 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002935/0.9316, allocations: 1.569 MB / 0.7526 GB, free: 1.555 MB / 0.5606 GB Notification: Performance of NFPackage.collectConstants: time 0.0003062/0.9319, allocations: 73.28 kB / 0.7527 GB, free: 1.555 MB / 0.5606 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003013/0.9349, allocations: 1.167 MB / 0.7538 GB, free: 1.543 MB / 0.5606 GB Notification: Performance of NFScalarize.scalarize: time 0.0005909/0.9355, allocations: 450.7 kB / 0.7542 GB, free: 1.543 MB / 0.5606 GB Notification: Performance of NFVerifyModel.verify: time 0.001003/0.9365, allocations: 0.5606 MB / 0.7548 GB, free: 1.539 MB / 0.5606 GB Notification: Performance of NFConvertDAE.convert: time 0.00365/0.9402, allocations: 2.075 MB / 0.7568 GB, free: 1.43 MB / 0.5606 GB Notification: Performance of FrontEnd - DAE generated: time 5.259e-06/0.9402, allocations: 0 / 0.7568 GB, free: 1.43 MB / 0.5606 GB Notification: Performance of FrontEnd: time 1.794e-06/0.9402, allocations: 0.8125 kB / 0.7568 GB, free: 1.43 MB / 0.5606 GB Notification: Performance of Transformations before backend: time 2.194e-05/0.9402, allocations: 0 / 0.7568 GB, free: 1.43 MB / 0.5606 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 192 * Number of variables: 192 Notification: Performance of Generate backend data structure: time 0.003979/0.9442, allocations: 1.408 MB / 0.7582 GB, free: 16.79 MB / 0.5762 GB Notification: Performance of prepare preOptimizeDAE: time 4.221e-05/0.9442, allocations: 11.53 kB / 0.7582 GB, free: 16.79 MB / 0.5762 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001355/0.9456, allocations: 285.9 kB / 0.7585 GB, free: 16.73 MB / 0.5762 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001128/0.9467, allocations: 0.5683 MB / 0.759 GB, free: 16.52 MB / 0.5762 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001838/0.9469, allocations: 169.2 kB / 0.7592 GB, free: 16.39 MB / 0.5762 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001115/0.947, allocations: 66.34 kB / 0.7592 GB, free: 16.39 MB / 0.5762 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.00219/0.9492, allocations: 1.971 MB / 0.7612 GB, free: 15.3 MB / 0.5762 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.589e-05/0.9492, allocations: 1.031 kB / 0.7612 GB, free: 15.3 MB / 0.5762 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001079/0.9493, allocations: 33.95 kB / 0.7612 GB, free: 15.3 MB / 0.5762 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 9.854e-05/0.9494, allocations: 85.88 kB / 0.7613 GB, free: 15.3 MB / 0.5762 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001495/0.9509, allocations: 1.054 MB / 0.7623 GB, free: 15.29 MB / 0.5762 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 0.006761/0.9577, allocations: 4.629 MB / 0.7668 GB, free: 12.82 MB / 0.5762 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0004941/0.9582, allocations: 297.6 kB / 0.7671 GB, free: 12.79 MB / 0.5762 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002056/0.9584, allocations: 136.3 kB / 0.7673 GB, free: 12.78 MB / 0.5762 GB Notification: Performance of preOpt evalFunc (simulation): time 7.47e-05/0.9584, allocations: 18.56 kB / 0.7673 GB, free: 12.78 MB / 0.5762 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.805e-05/0.9585, allocations: 37.69 kB / 0.7673 GB, free: 12.74 MB / 0.5762 GB Notification: Performance of pre-optimization done (n=28): time 2.194e-06/0.9585, allocations: 1.062 kB / 0.7673 GB, free: 12.74 MB / 0.5762 GB Notification: Performance of matching and sorting (n=33): time 0.006169/0.9646, allocations: 1.758 MB / 0.769 GB, free: 12.16 MB / 0.5762 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001137/0.9648, allocations: 137 kB / 0.7692 GB, free: 12 MB / 0.5762 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001145/0.9659, allocations: 0.9426 MB / 0.7701 GB, free: 11.83 MB / 0.5762 GB Notification: Performance of collectPreVariables (initialization): time 6.135e-05/0.966, allocations: 32.11 kB / 0.7701 GB, free: 11.8 MB / 0.5762 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004298/0.9664, allocations: 0.5845 MB / 0.7707 GB, free: 11.47 MB / 0.5762 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001197/0.9665, allocations: 147 kB / 0.7708 GB, free: 11.38 MB / 0.5762 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002593/0.9668, allocations: 218.7 kB / 0.771 GB, free: 11.35 MB / 0.5762 GB Notification: Performance of setup shared object (initialization): time 0.000223/0.967, allocations: 402.3 kB / 0.7714 GB, free: 11.04 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003847/0.9674, allocations: 272.6 kB / 0.7717 GB, free: 11.04 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001005/0.9684, allocations: 0.9421 MB / 0.7726 GB, free: 10.2 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001484/0.9699, allocations: 1.177 MB / 0.7737 GB, free: 9.492 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.042e-05/0.9699, allocations: 5.312 kB / 0.7737 GB, free: 9.492 MB / 0.5762 GB Notification: Performance of matching and sorting (n=130) (initialization): time 0.001879/0.9718, allocations: 1.239 MB / 0.775 GB, free: 9.391 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 3.323e-05/0.9718, allocations: 14.12 kB / 0.775 GB, free: 9.391 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.527e-05/0.9718, allocations: 21.62 kB / 0.775 GB, free: 9.391 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001245/0.9731, allocations: 293.6 kB / 0.7753 GB, free: 9.379 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005395/0.9736, allocations: 205.2 kB / 0.7755 GB, free: 9.379 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001085/0.9747, allocations: 0.9114 MB / 0.7764 GB, free: 8.852 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0008226/0.9755, allocations: 54.84 kB / 0.7764 GB, free: 8.84 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.473e-05/0.9756, allocations: 70.98 kB / 0.7765 GB, free: 8.84 MB / 0.5762 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 90 * Number of states: 0 () * Number of discrete variables: 4 (volume.regularFlow[1],volume.regularFlow[2],volume.inFlow[2],volume.inFlow[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (112): * Single equations (assignments): 111 * 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 {(2,17)} Notification: Performance of prepare postOptimizeDAE: time 0.0005178/0.9761, allocations: 342.2 kB / 0.7768 GB, free: 8.715 MB / 0.5762 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001596/0.9763, allocations: 92.34 kB / 0.7769 GB, free: 8.668 MB / 0.5762 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.000972/0.9772, allocations: 0.5198 MB / 0.7774 GB, free: 8.598 MB / 0.5762 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 9.107e-06/0.9773, allocations: 7.875 kB / 0.7774 GB, free: 8.594 MB / 0.5762 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.412e-06/0.9773, allocations: 0 / 0.7774 GB, free: 8.594 MB / 0.5762 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 7.714e-06/0.9773, allocations: 3.734 kB / 0.7774 GB, free: 8.594 MB / 0.5762 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001806/0.9791, allocations: 1.094 MB / 0.7785 GB, free: 8.305 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.518e-06/0.9791, allocations: 4.156 kB / 0.7785 GB, free: 8.305 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0009325/0.98, allocations: 183 kB / 0.7787 GB, free: 8.305 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (simulation): time 9.346e-05/0.9801, allocations: 21.41 kB / 0.7787 GB, free: 8.297 MB / 0.5762 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.685e-05/0.9801, allocations: 10.78 kB / 0.7787 GB, free: 8.297 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.002288/0.9824, allocations: 2.667 MB / 0.7813 GB, free: 5.805 MB / 0.5762 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.413e-06/0.9824, allocations: 0 / 0.7813 GB, free: 5.805 MB / 0.5762 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00106/0.9835, allocations: 0.703 MB / 0.782 GB, free: 5.602 MB / 0.5762 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0003789/0.9839, allocations: 126.2 kB / 0.7821 GB, free: 5.547 MB / 0.5762 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001121/0.984, allocations: 16.98 kB / 0.7821 GB, free: 5.547 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003953/0.9844, allocations: 8.688 kB / 0.7821 GB, free: 5.547 MB / 0.5762 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.274e-05/0.9844, allocations: 36.09 kB / 0.7822 GB, free: 5.543 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.861e-05/0.9845, allocations: 21.03 kB / 0.7822 GB, free: 5.543 MB / 0.5762 GB Notification: Performance of sorting global known variables: time 0.0007649/0.9852, allocations: 0.6244 MB / 0.7828 GB, free: 5.434 MB / 0.5762 GB Notification: Performance of sort global known variables: time 8e-08/0.9852, allocations: 1.125 kB / 0.7828 GB, free: 5.434 MB / 0.5762 GB Notification: Performance of remove unused functions: time 0.001407/0.9866, allocations: 381.7 kB / 0.7831 GB, free: 5.402 MB / 0.5762 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 2 * Number of states: 2 (volume.medium.p,volume.medium.T) * 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 (33): * Single equations (assignments): 31 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 1 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 1 system {1} * Without analytic Jacobian (size): 0 systems Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(1,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.001594/0.9882, allocations: 0.6251 MB / 0.7838 GB, free: 5.242 MB / 0.5762 GB Notification: Performance of simCode: created initialization part: time 0.001474/0.9897, allocations: 0.6571 MB / 0.7844 GB, free: 5.219 MB / 0.5762 GB Notification: Performance of simCode: created event and clocks part: time 3.757e-06/0.9897, allocations: 0 / 0.7844 GB, free: 5.219 MB / 0.5762 GB Notification: Performance of simCode: created simulation system equations: time 0.000899/0.9906, allocations: 362.9 kB / 0.7847 GB, free: 5.105 MB / 0.5762 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001835/0.9925, allocations: 440.9 kB / 0.7852 GB, free: 5.027 MB / 0.5762 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002606/0.9951, allocations: 1.634 MB / 0.7868 GB, free: 4.344 MB / 0.5762 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0007124/0.9958, allocations: 1.026 MB / 0.7878 GB, free: 3.633 MB / 0.5762 GB Notification: Performance of simCode: alias equations: time 0.001041/0.9968, allocations: 387.2 kB / 0.7881 GB, free: 3.57 MB / 0.5762 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002091/0.997, allocations: 75.48 kB / 0.7882 GB, free: 3.562 MB / 0.5762 GB Notification: Performance of SimCode: time 1.824e-06/0.997, allocations: 4 kB / 0.7882 GB, free: 3.559 MB / 0.5762 GB Notification: Performance of Templates: time 0.03933/1.036, allocations: 22.64 MB / 0.8103 GB, free: 6.73 MB / 0.5919 GB " [Timeout remaining time 659] make -j1 -f ModelicaTest_4.1.0-beta.om_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasFixedComposition.makefile [Timeout 660] (rm -f ModelicaTest_4.1.0-beta.om_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasFixedComposition.pipe ; mkfifo ModelicaTest_4.1.0-beta.om_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasFixedComposition.pipe ; head -c 1048576 < ModelicaTest_4.1.0-beta.om_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasFixedComposition.pipe >> ../files/ModelicaTest_4.1.0-beta.om_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasFixedComposition.sim & ./ModelicaTest_4.1.0-beta.om_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasFixedComposition -abortSlowSimulation -alarm=480 -s gbode -emit_protected -lv LOG_STATS > ModelicaTest_4.1.0-beta.om_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasFixedComposition.pipe 2>&1) [Timeout 480] diffSimulationResults("ModelicaTest_4.1.0-beta.om_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasFixedComposition_res.mat","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/Reference-modelica.org/ReferenceResults/MAP-LIB_ReferenceResults/v4.1.0/ModelicaTest/Media/TestsWithFluid/MediaTestModels/IdealGases/SimpleNaturalGasFixedComposition/SimpleNaturalGasFixedComposition.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/ModelicaTest_4.1.0-beta.om_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasFixedComposition.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 660] "" [Timeout remaining time 660] Reference file matches [Calling sys.exit(0), Time elapsed: 6.486638450063765]