Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ModelicaTest_3.2.3_ModelicaTest.Media.TestsWithFluid.MediaTestModels.Water.IdealSteam.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 0.001465/0.001465, allocations: 100.3 kB / 19.69 MB, free: 1.805 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 0.001644/0.001644, allocations: 206.5 kB / 22.99 MB, free: 4.602 MB / 14.72 MB
"
[Timeout remaining time 180]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.575/1.575, allocations: 207.7 MB / 233.8 MB, free: 9.793 MB / 190.1 MB
"
[Timeout remaining time 178]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 3.2.3+maint.om/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 3.2.3+maint.om/package.mo): time 0.2963/0.2963, allocations: 44.27 MB / 330.3 MB, free: 9.32 MB / 270.1 MB
"
[Timeout remaining time 179]
Using package ModelicaTest with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 3.2.3+maint.om/package.mo)
Using package Modelica with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+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: translateModel(ModelicaTest.Media.TestsWithFluid.MediaTestModels.Water.IdealSteam,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5002,variableFilter="time|volume.medium.T|volume.medium.p",fileNamePrefix="ModelicaTest_3.2.3_ModelicaTest.Media.TestsWithFluid.MediaTestModels.Water.IdealSteam")
translateModel(ModelicaTest.Media.TestsWithFluid.MediaTestModels.Water.IdealSteam,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5002,variableFilter="time|volume.medium.T|volume.medium.p",fileNamePrefix="ModelicaTest_3.2.3_ModelicaTest.Media.TestsWithFluid.MediaTestModels.Water.IdealSteam") [Timeout 660]
"Notification: Modelica requested package Complex of version 3.2.3. Complex 4.1.0 is used instead which states that it is fully compatible without conversion script needed.
Notification: Modelica requested package ModelicaServices of version 3.2.3. ModelicaServices 4.1.0 is used instead which states that it is fully compatible without conversion script needed.
Notification: Performance of FrontEnd - loaded program: time 0.002294/0.002294, allocations: 78.22 kB / 468 MB, free: 3.84 MB / 334.1 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.1331/0.1354, allocations: 61.04 MB / 0.5167 GB, free: 6.664 MB / 398.1 MB
Notification: Performance of NFInst.instantiate(ModelicaTest.Media.TestsWithFluid.MediaTestModels.Water.IdealSteam): time 0.5027/0.6382, allocations: 156.4 MB / 0.6694 GB, free: 5.656 MB / 0.4981 GB
Notification: Performance of NFInst.instExpressions: time 0.009292/0.6475, allocations: 5.281 MB / 0.6746 GB, free: 372 kB / 0.4981 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.0009528/0.6484, allocations: 31.75 kB / 0.6746 GB, free: 340 kB / 0.4981 GB
Notification: Performance of NFTyping.typeComponents: time 0.001436/0.6499, allocations: 306 kB / 0.6749 GB, free: 32 kB / 0.4981 GB
Notification: Performance of NFTyping.typeBindings: time 0.006057/0.6559, allocations: 1.594 MB / 0.6765 GB, free: 14.44 MB / 0.5137 GB
Notification: Performance of NFTyping.typeClassSections: time 0.004067/0.66, allocations: 1.25 MB / 0.6777 GB, free: 13.19 MB / 0.5137 GB
Notification: Performance of NFFlatten.flatten: time 0.003389/0.6634, allocations: 1.864 MB / 0.6795 GB, free: 11.32 MB / 0.5137 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.001047/0.6644, allocations: 397.5 kB / 0.6799 GB, free: 10.92 MB / 0.5137 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.004194/0.6686, allocations: 1.269 MB / 0.6811 GB, free: 9.648 MB / 0.5137 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.002106/0.6707, allocations: 0.7666 MB / 0.6819 GB, free: 8.879 MB / 0.5137 GB
Notification: Performance of NFPackage.collectConstants: time 0.0003818/0.6711, allocations: 60 kB / 0.6819 GB, free: 8.82 MB / 0.5137 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.002533/0.6736, allocations: 0.745 MB / 0.6827 GB, free: 8.074 MB / 0.5137 GB
Notification: Performance of NFScalarize.scalarize: time 0.0006068/0.6742, allocations: 267.2 kB / 0.6829 GB, free: 7.812 MB / 0.5137 GB
Notification: Performance of NFVerifyModel.verify: time 0.0008877/0.6751, allocations: 338.6 kB / 0.6832 GB, free: 7.48 MB / 0.5137 GB
Notification: Performance of NFConvertDAE.convert: time 0.003337/0.6785, allocations: 1.425 MB / 0.6846 GB, free: 6.051 MB / 0.5137 GB
Notification: Performance of FrontEnd - DAE generated: time 3.957e-06/0.6785, allocations: 0 / 0.6846 GB, free: 6.051 MB / 0.5137 GB
Notification: Performance of FrontEnd: time 2.585e-06/0.6785, allocations: 0 / 0.6846 GB, free: 6.051 MB / 0.5137 GB
Notification: Performance of Transformations before backend: time 4.205e-05/0.6785, allocations: 0 / 0.6846 GB, free: 6.051 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: 130
 * Number of variables: 130
Notification: Performance of Generate backend data structure: time 0.0033/0.6818, allocations: 1.08 MB / 0.6857 GB, free: 4.938 MB / 0.5137 GB
Notification: Performance of prepare preOptimizeDAE: time 5.676e-05/0.6819, allocations: 8.031 kB / 0.6857 GB, free: 4.93 MB / 0.5137 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001056/0.6829, allocations: 131.5 kB / 0.6858 GB, free: 4.801 MB / 0.5137 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.001387/0.6843, allocations: 0.4895 MB / 0.6863 GB, free: 4.285 MB / 0.5137 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.000222/0.6845, allocations: 151.8 kB / 0.6864 GB, free: 4.113 MB / 0.5137 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001357/0.6847, allocations: 48 kB / 0.6865 GB, free: 4.066 MB / 0.5137 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.001918/0.6866, allocations: 1.165 MB / 0.6876 GB, free: 2.742 MB / 0.5137 GB
Notification: Performance of preOpt findStateOrder (simulation): time 3.135e-05/0.6866, allocations: 3.938 kB / 0.6876 GB, free: 2.738 MB / 0.5137 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.068e-05/0.6867, allocations: 24 kB / 0.6877 GB, free: 2.715 MB / 0.5137 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.836e-05/0.6868, allocations: 40.97 kB / 0.6877 GB, free: 2.672 MB / 0.5137 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001203/0.688, allocations: 0.6165 MB / 0.6883 GB, free: 2.059 MB / 0.5137 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 0.005351/0.6933, allocations: 3.241 MB / 0.6915 GB, free: 14.69 MB / 0.5294 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.0006362/0.694, allocations: 331.6 kB / 0.6918 GB, free: 14.36 MB / 0.5294 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0002942/0.6943, allocations: 161.3 kB / 0.6919 GB, free: 14.2 MB / 0.5294 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0003732/0.6946, allocations: 130.1 kB / 0.6921 GB, free: 14.07 MB / 0.5294 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.489e-05/0.6947, allocations: 42.83 kB / 0.6921 GB, free: 14.02 MB / 0.5294 GB
Notification: Performance of pre-optimization done (n=34): time 2.244e-06/0.6947, allocations: 0 / 0.6921 GB, free: 14.02 MB / 0.5294 GB
Notification: Performance of matching and sorting (n=39): time 0.006175/0.7009, allocations: 1.599 MB / 0.6937 GB, free: 12.38 MB / 0.5294 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001071/0.701, allocations: 136.5 kB / 0.6938 GB, free: 12.21 MB / 0.5294 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0008082/0.7018, allocations: 0.5338 MB / 0.6943 GB, free: 11.67 MB / 0.5294 GB
Notification: Performance of collectPreVariables (initialization): time 6.026e-05/0.7018, allocations: 33.7 kB / 0.6943 GB, free: 11.63 MB / 0.5294 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0003375/0.7022, allocations: 380.2 kB / 0.6947 GB, free: 11.25 MB / 0.5294 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0001677/0.7023, allocations: 154.7 kB / 0.6949 GB, free: 11.1 MB / 0.5294 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002575/0.7026, allocations: 166.5 kB / 0.695 GB, free: 10.93 MB / 0.5294 GB
Notification: Performance of setup shared object (initialization): time 0.0001977/0.7028, allocations: 362.8 kB / 0.6954 GB, free: 10.57 MB / 0.5294 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004058/0.7032, allocations: 205.9 kB / 0.6956 GB, free: 10.37 MB / 0.5294 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.000729/0.7039, allocations: 0.5916 MB / 0.6961 GB, free: 9.613 MB / 0.5294 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.001169/0.7051, allocations: 0.7445 MB / 0.6969 GB, free: 8.73 MB / 0.5294 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.122e-06/0.7051, allocations: 0 / 0.6969 GB, free: 8.73 MB / 0.5294 GB
Notification: Performance of matching and sorting (n=85) (initialization): time 0.001661/0.7068, allocations: 0.865 MB / 0.6977 GB, free: 7.855 MB / 0.5294 GB
Notification: Performance of prepare postOptimizeDAE: time 2.247e-05/0.7068, allocations: 8 kB / 0.6977 GB, free: 7.848 MB / 0.5294 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.949e-05/0.7068, allocations: 12.09 kB / 0.6977 GB, free: 7.836 MB / 0.5294 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.001421/0.7082, allocations: 316.5 kB / 0.698 GB, free: 7.523 MB / 0.5294 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004462/0.7087, allocations: 123.8 kB / 0.6981 GB, free: 7.402 MB / 0.5294 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001284/0.71, allocations: 0.9342 MB / 0.6991 GB, free: 6.445 MB / 0.5294 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005639/0.7105, allocations: 31.94 kB / 0.6991 GB, free: 6.414 MB / 0.5294 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001404/0.7107, allocations: 63.98 kB / 0.6991 GB, free: 6.352 MB / 0.5294 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 45
 * 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 (67):
 * Single equations (assignments): 66
 * 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 0.0005316/0.7112, allocations: 249.5 kB / 0.6994 GB, free: 6.098 MB / 0.5294 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002063/0.7114, allocations: 63.62 kB / 0.6994 GB, free: 6.035 MB / 0.5294 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.00164/0.713, allocations: 0.6703 MB / 0.7001 GB, free: 5.352 MB / 0.5294 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.028e-05/0.7131, allocations: 4 kB / 0.7001 GB, free: 5.348 MB / 0.5294 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 1.265e-05/0.7131, allocations: 0 / 0.7001 GB, free: 5.348 MB / 0.5294 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 9.738e-06/0.7131, allocations: 7.984 kB / 0.7001 GB, free: 5.34 MB / 0.5294 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002579/0.7157, allocations: 1.168 MB / 0.7013 GB, free: 4.117 MB / 0.5294 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.01e-06/0.7157, allocations: 0 / 0.7013 GB, free: 4.117 MB / 0.5294 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.00111/0.7168, allocations: 207.7 kB / 0.7014 GB, free: 3.914 MB / 0.5294 GB
Notification: Performance of postOpt tearingSystem (simulation): time 9.184e-05/0.7169, allocations: 24.97 kB / 0.7015 GB, free: 3.887 MB / 0.5294 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.427e-05/0.7169, allocations: 23.98 kB / 0.7015 GB, free: 3.863 MB / 0.5294 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.002398/0.7193, allocations: 2.63 MB / 0.7041 GB, free: 1.031 MB / 0.5294 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.025e-06/0.7193, allocations: 0.75 kB / 0.7041 GB, free: 1.031 MB / 0.5294 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001369/0.7207, allocations: 0.7976 MB / 0.7048 GB, free: 208 kB / 0.5294 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0003468/0.721, allocations: 111.5 kB / 0.7049 GB, free: 96 kB / 0.5294 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001054/0.7211, allocations: 8 kB / 0.705 GB, free: 88 kB / 0.5294 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000396/0.7215, allocations: 15.98 kB / 0.705 GB, free: 72 kB / 0.5294 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001035/0.7216, allocations: 47.92 kB / 0.705 GB, free: 24 kB / 0.5294 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 9.663e-05/0.7217, allocations: 43.98 kB / 0.7051 GB, free: 15.98 MB / 0.545 GB
Notification: Performance of sorting global known variables: time 0.0005076/0.7222, allocations: 363 kB / 0.7054 GB, free: 15.63 MB / 0.545 GB
Notification: Performance of sort global known variables: time 6e-08/0.7222, allocations: 0 / 0.7054 GB, free: 15.63 MB / 0.545 GB
Notification: Performance of remove unused functions: time 0.001056/0.7233, allocations: 295.6 kB / 0.7057 GB, free: 15.34 MB / 0.545 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 5
 * 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 (39):
 * Single equations (assignments): 37
 * 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 0.001094/0.7244, allocations: 381.1 kB / 0.7061 GB, free: 14.96 MB / 0.545 GB
Notification: Performance of simCode: created initialization part: time 0.001283/0.7257, allocations: 0.5308 MB / 0.7066 GB, free: 14.43 MB / 0.545 GB
Notification: Performance of simCode: created event and clocks part: time 4.458e-06/0.7257, allocations: 0 / 0.7066 GB, free: 14.43 MB / 0.545 GB
Notification: Performance of simCode: created simulation system equations: time 0.001101/0.7268, allocations: 407.2 kB / 0.707 GB, free: 14.02 MB / 0.545 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001572/0.7284, allocations: 292.2 kB / 0.7072 GB, free: 13.74 MB / 0.545 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002673/0.731, allocations: 1.315 MB / 0.7085 GB, free: 12.38 MB / 0.545 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.00043/0.7315, allocations: 340.3 kB / 0.7088 GB, free: 12.02 MB / 0.545 GB
Notification: Performance of simCode: alias equations: time 0.0008422/0.7323, allocations: 245.2 kB / 0.7091 GB, free: 11.78 MB / 0.545 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002873/0.7326, allocations: 95.41 kB / 0.7092 GB, free: 11.69 MB / 0.545 GB
Notification: Performance of SimCode: time 1.162e-06/0.7326, allocations: 4 kB / 0.7092 GB, free: 11.68 MB / 0.545 GB
Notification: Performance of Templates: time 0.03524/0.7678, allocations: 17.64 MB / 0.7264 GB, free: 10.08 MB / 0.5606 GB
"
[Timeout remaining time 659]
make -j1 -f ModelicaTest_3.2.3_ModelicaTest.Media.TestsWithFluid.MediaTestModels.Water.IdealSteam.makefile [Timeout 660]
(rm -f ModelicaTest_3.2.3_ModelicaTest.Media.TestsWithFluid.MediaTestModels.Water.IdealSteam.pipe ; mkfifo ModelicaTest_3.2.3_ModelicaTest.Media.TestsWithFluid.MediaTestModels.Water.IdealSteam.pipe ; head -c 1048576 < ModelicaTest_3.2.3_ModelicaTest.Media.TestsWithFluid.MediaTestModels.Water.IdealSteam.pipe >> ../files/ModelicaTest_3.2.3_ModelicaTest.Media.TestsWithFluid.MediaTestModels.Water.IdealSteam.sim & ./ModelicaTest_3.2.3_ModelicaTest.Media.TestsWithFluid.MediaTestModels.Water.IdealSteam  -abortSlowSimulation -alarm=480  -emit_protected -lv LOG_STATS > ModelicaTest_3.2.3_ModelicaTest.Media.TestsWithFluid.MediaTestModels.Water.IdealSteam.pipe 2>&1) [Timeout 480]
diffSimulationResults("ModelicaTest_3.2.3_ModelicaTest.Media.TestsWithFluid.MediaTestModels.Water.IdealSteam_res.mat","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/Reference-modelica.org/ReferenceResults/MAP-LIB_ReferenceResults/v3.2.3+build.4/ModelicaTest/Media/TestsWithFluid/MediaTestModels/Water/IdealSteam/IdealSteam.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/ModelicaTest_3.2.3_ModelicaTest.Media.TestsWithFluid.MediaTestModels.Water.IdealSteam.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: 6.524121964350343]