Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ModelicaTest_trunk_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas.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 0.0008373/0.0008373, allocations: 80.34 kB / 20.67 MB, free: 3.891 MB / 18.57 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 0.000887/0.000887, allocations: 156.9 kB / 23.95 MB, free: 0.6133 MB / 18.57 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 0.9343/0.9343, allocations: 177 MB / 204.1 MB, free: 5.75 MB / 186.7 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest trunk/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest trunk/package.mo): time 0.2571/0.2571, allocations: 34.25 MB / 294.8 MB, free: 0.6758 MB / 266.7 MB " [Timeout remaining time 180] Using package ModelicaTest with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest trunk/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: "" <> buildModelFMU(ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas,fileNamePrefix="ModelicaTest_trunk_ModelicaTest_Media_TestsWithFluid_MediaTestModels_IdealGases_SimpleNaturalGas",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas,fileNamePrefix="ModelicaTest_trunk_ModelicaTest_Media_TestsWithFluid_MediaTestModels_IdealGases_SimpleNaturalGas",fmuType="me",version="2.0",platforms={"static"}) [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 5.45e-06/5.45e-06, allocations: 3.984 kB / 442.2 MB, free: 1.535 MB / 410.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 2.689e-05/3.234e-05, allocations: 5.234 kB / 442.2 MB, free: 1.531 MB / 410.7 MB Notification: Performance of NFInst.instantiate(ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas): time 0.3089/0.3089, allocations: 156.3 MB / 0.5845 GB, free: 4.102 MB / 490.7 MB Notification: Performance of NFInst.instExpressions: time 0.006155/0.315, allocations: 5.982 MB / 0.5903 GB, free: 14.11 MB / 0.4948 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0006887/0.3157, allocations: 27.75 kB / 0.5903 GB, free: 14.08 MB / 0.4948 GB Notification: Performance of NFTyping.typeComponents: time 0.001044/0.3168, allocations: 409.5 kB / 0.5907 GB, free: 13.68 MB / 0.4948 GB Notification: Performance of NFTyping.typeBindings: time 0.00359/0.3204, allocations: 1.828 MB / 0.5925 GB, free: 11.84 MB / 0.4948 GB Notification: Performance of NFTyping.typeClassSections: time 0.002901/0.3233, allocations: 1.591 MB / 0.594 GB, free: 10.26 MB / 0.4948 GB Notification: Performance of NFFlatten.flatten: time 0.002394/0.3257, allocations: 2.266 MB / 0.5963 GB, free: 7.988 MB / 0.4948 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0008163/0.3265, allocations: 0.5941 MB / 0.5968 GB, free: 7.387 MB / 0.4948 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002929/0.3294, allocations: 2.103 MB / 0.5989 GB, free: 5.277 MB / 0.4948 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002422/0.3318, allocations: 1.613 MB / 0.6005 GB, free: 3.664 MB / 0.4948 GB Notification: Performance of NFPackage.collectConstants: time 0.0002398/0.3321, allocations: 100 kB / 0.6006 GB, free: 3.566 MB / 0.4948 GB Notification: Performance of NFFlatten.collectFunctions: time 0.00242/0.3345, allocations: 1.184 MB / 0.6017 GB, free: 2.379 MB / 0.4948 GB Notification: Performance of NFScalarize.scalarize: time 0.0007896/0.3353, allocations: 0.7288 MB / 0.6024 GB, free: 1.648 MB / 0.4948 GB Notification: Performance of NFVerifyModel.verify: time 0.0006857/0.336, allocations: 0.5693 MB / 0.603 GB, free: 1.078 MB / 0.4948 GB Notification: Performance of NFConvertDAE.convert: time 0.00484/0.3408, allocations: 2.794 MB / 0.6057 GB, free: 14.28 MB / 0.5105 GB Notification: Performance of FrontEnd - DAE generated: time 9.628e-06/0.3408, allocations: 7.984 kB / 0.6057 GB, free: 14.27 MB / 0.5105 GB Notification: Performance of FrontEnd: time 2.555e-06/0.3408, allocations: 0 / 0.6057 GB, free: 14.27 MB / 0.5105 GB Notification: Performance of Transformations before backend: time 5.608e-05/0.3409, allocations: 4 kB / 0.6057 GB, free: 14.27 MB / 0.5105 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 276 * Number of variables: 276 Notification: Performance of Generate backend data structure: time 0.003556/0.3444, allocations: 1.653 MB / 0.6073 GB, free: 12.58 MB / 0.5105 GB Notification: Performance of prepare preOptimizeDAE: time 7.618e-05/0.3445, allocations: 8.031 kB / 0.6074 GB, free: 12.57 MB / 0.5105 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.000233/0.3447, allocations: 180.8 kB / 0.6075 GB, free: 12.38 MB / 0.5105 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001001/0.3457, allocations: 311 kB / 0.6078 GB, free: 12.08 MB / 0.5105 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001088/0.3468, allocations: 0.7116 MB / 0.6085 GB, free: 11.34 MB / 0.5105 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001838/0.347, allocations: 205.8 kB / 0.6087 GB, free: 11.12 MB / 0.5105 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001405/0.3471, allocations: 107.9 kB / 0.6088 GB, free: 11.01 MB / 0.5105 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002373/0.3495, allocations: 2.54 MB / 0.6113 GB, free: 8.23 MB / 0.5105 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.989e-05/0.3495, allocations: 3.938 kB / 0.6113 GB, free: 8.227 MB / 0.5105 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.911e-05/0.3496, allocations: 51.98 kB / 0.6113 GB, free: 8.176 MB / 0.5105 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.939e-05/0.3497, allocations: 89.95 kB / 0.6114 GB, free: 8.09 MB / 0.5105 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001864/0.3516, allocations: 1.694 MB / 0.6131 GB, free: 6.391 MB / 0.5105 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 0.005726/0.3573, allocations: 5.053 MB / 0.618 GB, free: 1.234 MB / 0.5105 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0008993/0.3582, allocations: 0.8422 MB / 0.6188 GB, free: 396 kB / 0.5105 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.000431/0.3586, allocations: 443.7 kB / 0.6193 GB, free: 15.95 MB / 0.5261 GB Notification: Performance of preOpt evalFunc (simulation): time 7.312e-05/0.3587, allocations: 20.48 kB / 0.6193 GB, free: 15.93 MB / 0.5261 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.998e-05/0.3588, allocations: 47.06 kB / 0.6193 GB, free: 15.87 MB / 0.5261 GB Notification: Performance of pre-optimization done (n=60): time 2.194e-06/0.3588, allocations: 1.875 kB / 0.6193 GB, free: 15.87 MB / 0.5261 GB Notification: Performance of matching and sorting (n=72): time 0.0068/0.3656, allocations: 4.066 MB / 0.6233 GB, free: 11.78 MB / 0.5261 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.226e-05/0.3656, allocations: 107.5 kB / 0.6234 GB, free: 11.65 MB / 0.5261 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001597/0.3672, allocations: 1.128 MB / 0.6245 GB, free: 10.5 MB / 0.5261 GB Notification: Performance of collectPreVariables (initialization): time 0.0001764/0.3674, allocations: 45.7 kB / 0.6246 GB, free: 10.45 MB / 0.5261 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003534/0.3677, allocations: 0.5274 MB / 0.6251 GB, free: 9.91 MB / 0.5261 GB Notification: Performance of collectInitialBindings (initialization): time 0.000209/0.368, allocations: 281.6 kB / 0.6253 GB, free: 9.633 MB / 0.5261 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002581/0.3682, allocations: 206.5 kB / 0.6255 GB, free: 9.422 MB / 0.5261 GB Notification: Performance of setup shared object (initialization): time 0.0001052/0.3683, allocations: 353.9 kB / 0.6259 GB, free: 9.07 MB / 0.5261 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000727/0.369, allocations: 0.5875 MB / 0.6264 GB, free: 8.484 MB / 0.5261 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0009049/0.3699, allocations: 0.9262 MB / 0.6274 GB, free: 7.43 MB / 0.5261 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001496/0.3714, allocations: 1.443 MB / 0.6288 GB, free: 5.871 MB / 0.5261 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 9.538e-06/0.3715, allocations: 7.984 kB / 0.6288 GB, free: 5.863 MB / 0.5261 GB Notification: Performance of matching and sorting (n=125) (initialization): time 0.002387/0.3738, allocations: 1.973 MB / 0.6307 GB, free: 3.883 MB / 0.5261 GB Notification: Performance of prepare postOptimizeDAE: time 2.972e-05/0.3739, allocations: 8 kB / 0.6307 GB, free: 3.875 MB / 0.5261 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.788e-05/0.3739, allocations: 11.98 kB / 0.6307 GB, free: 3.863 MB / 0.5261 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.002666/0.3766, allocations: 1.358 MB / 0.632 GB, free: 2.52 MB / 0.5261 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005325/0.3771, allocations: 143.8 kB / 0.6322 GB, free: 2.379 MB / 0.5261 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001943/0.379, allocations: 1.928 MB / 0.6341 GB, free: 436 kB / 0.5261 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007058/0.3797, allocations: 43.97 kB / 0.6341 GB, free: 392 kB / 0.5261 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 9.861e-05/0.3798, allocations: 63.98 kB / 0.6342 GB, free: 328 kB / 0.5261 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 37 * 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 (82): * Single equations (assignments): 81 * 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 {(9,35)} Notification: Performance of prepare postOptimizeDAE: time 0.2027/0.5825, allocations: 393.4 kB / 0.6345 GB, free: 164.6 MB / 0.5261 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002464/0.5827, allocations: 118.4 kB / 0.6347 GB, free: 164.6 MB / 0.5261 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001746/0.5845, allocations: 1.493 MB / 0.6361 GB, free: 164.6 MB / 0.5261 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.464e-06/0.5845, allocations: 7.875 kB / 0.6361 GB, free: 164.6 MB / 0.5261 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.003e-06/0.5845, allocations: 0 / 0.6361 GB, free: 164.6 MB / 0.5261 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.913e-06/0.5845, allocations: 10.14 kB / 0.6361 GB, free: 164.6 MB / 0.5261 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002592/0.5871, allocations: 2.464 MB / 0.6385 GB, free: 163.5 MB / 0.5261 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.928e-06/0.5871, allocations: 0 / 0.6385 GB, free: 163.5 MB / 0.5261 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0009242/0.588, allocations: 325.1 kB / 0.6388 GB, free: 163.5 MB / 0.5261 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0001307/0.5881, allocations: 72.89 kB / 0.6389 GB, free: 163.5 MB / 0.5261 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.144e-05/0.5882, allocations: 36.52 kB / 0.6389 GB, free: 163.5 MB / 0.5261 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001139/0.5893, allocations: 2.82 MB / 0.6417 GB, free: 160.8 MB / 0.5261 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.754e-06/0.5893, allocations: 0 / 0.6417 GB, free: 160.8 MB / 0.5261 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001705/0.591, allocations: 1.916 MB / 0.6436 GB, free: 160.1 MB / 0.5261 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004327/0.5915, allocations: 255.6 kB / 0.6438 GB, free: 160 MB / 0.5261 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001206/0.5916, allocations: 30.95 kB / 0.6438 GB, free: 160 MB / 0.5261 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0004579/0.5921, allocations: 51.42 kB / 0.6439 GB, free: 160 MB / 0.5261 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001091/0.5922, allocations: 61.42 kB / 0.644 GB, free: 160 MB / 0.5261 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.03e-05/0.5922, allocations: 62.59 kB / 0.644 GB, free: 160 MB / 0.5261 GB Notification: Performance of sorting global known variables: time 0.0006312/0.5929, allocations: 0.7959 MB / 0.6448 GB, free: 159.6 MB / 0.5261 GB Notification: Performance of sort global known variables: time 2.11e-07/0.5929, allocations: 0 / 0.6448 GB, free: 159.6 MB / 0.5261 GB Notification: Performance of remove unused functions: time 0.00101/0.5939, allocations: 484.8 kB / 0.6453 GB, free: 159.6 MB / 0.5261 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 2 * Number of states: 8 (volume.medium.p,volume.medium.Xi[1],volume.medium.Xi[2],volume.medium.Xi[3],volume.medium.Xi[4],volume.medium.Xi[5],volume.medium.Xi[6],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 (78): * Single equations (assignments): 76 * 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 0.002897/0.5968, allocations: 3.128 MB / 0.6483 GB, free: 158.2 MB / 0.5261 GB Notification: Performance of simCode: created initialization part: time 0.001617/0.5984, allocations: 1.415 MB / 0.6497 GB, free: 157.8 MB / 0.5261 GB Notification: Performance of simCode: created event and clocks part: time 6.081e-06/0.5984, allocations: 7.422 kB / 0.6497 GB, free: 157.8 MB / 0.5261 GB Notification: Performance of simCode: created simulation system equations: time 0.0009536/0.5993, allocations: 0.8393 MB / 0.6505 GB, free: 157.5 MB / 0.5261 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002013/0.6014, allocations: 0.7677 MB / 0.6513 GB, free: 157.3 MB / 0.5261 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01224/0.6136, allocations: 12.79 MB / 0.6638 GB, free: 151.7 MB / 0.5261 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004767/0.6141, allocations: 0.5771 MB / 0.6643 GB, free: 151.5 MB / 0.5261 GB Notification: Performance of simCode: alias equations: time 0.001122/0.6152, allocations: 482.4 kB / 0.6648 GB, free: 151.4 MB / 0.5261 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004608/0.6157, allocations: 451.5 kB / 0.6652 GB, free: 151.1 MB / 0.5261 GB Notification: Performance of SimCode: time 1.964e-06/0.6157, allocations: 0 / 0.6652 GB, free: 151.1 MB / 0.5261 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.0628/0.6785, allocations: 53.26 MB / 0.7172 GB, free: 118.8 MB / 0.5261 GB Notification: Performance of buildModelFMU: Generate platform static: time 8.888/9.567, allocations: 9.984 kB / 0.7172 GB, free: 118.8 MB / 0.5261 GB " [Timeout remaining time 650] (rm -f ModelicaTest_trunk_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas.pipe ; mkfifo ModelicaTest_trunk_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas.pipe ; head -c 1048576 < ModelicaTest_trunk_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas.pipe >> ../files/ModelicaTest_trunk_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=ModelicaTest_trunk_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas_res.mat --tempDir=temp_ModelicaTest_trunk_ModelicaTest_Media_TestsWithFluid_MediaTestModels_IdealGases_SimpleNaturalGas_fmu --startTime=0 --stopTime=1.01 --stepSize=0.000201919 --timeout=50 --tolerance=1e-06 ModelicaTest_trunk_ModelicaTest_Media_TestsWithFluid_MediaTestModels_IdealGases_SimpleNaturalGas.fmu > ModelicaTest_trunk_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas.pipe 2>&1) [Timeout 52.5] diffSimulationResults("ModelicaTest_trunk_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas_res.mat","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/Reference-modelica.org/ReferenceResults/MAP-LIB_ReferenceResults/v4.1.0/ModelicaTest/Media/TestsWithFluid/MediaTestModels/IdealGases/SimpleNaturalGas/SimpleNaturalGas.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/ModelicaTest_trunk_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas.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: 12.403876804746687]