Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr AixLib_AixLib.Utilities.Math.Functions.Examples.SpliceFunctionDerivativeCheck.conf.json
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo", uses=false) [Timeout 180]
"[<interactive>:1:22-1:33:writable] Warning: Modelica only supports 32-bit signed integers! Transforming: 13743895347 into a real
[<interactive>:1:1-1:33:writable] Error: Class GC_set_max_heap_size not found in scope <global scope> (looking for a function or record).
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo): time 0.0004804/0.0004804, allocations: 0 / 0, free: 0 / 0
"
[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 0.000408/0.000408, allocations: 0 / 0, free: 0 / 0
"
[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 0.3511/0.3511, allocations: 0 / 0, free: 0 / 0
"
[Timeout remaining time 180]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.2.0/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.2.0/package.mo): time 0.01967/0.01967, allocations: 0 / 0, free: 0 / 0
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.2.0/EmbeddedTargets/STM32F4/Functions/HAL.mo:5:3-11:14:writable] Warning: External function annotation should occur on the external-clause, not on the function.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.2.0/Incubate/OperatingSystem/DynamicArray.mo:6:3-94:18:writable] Warning: External function annotation should occur on the external-clause, not on the function.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.2.0/Incubate/Utilities/Functions.mo:1041:3-1062:27:writable] Warning: External function annotation should occur on the external-clause, not on the function.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.2.0/Incubate/Utilities/Functions.mo:1064:3-1092:25:writable] Warning: External function annotation should occur on the external-clause, not on the function.
"
[Timeout remaining time 180]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/SDF master/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/SDF master/package.mo): time 0.0001948/0.0001948, allocations: 0 / 0, free: 0 / 0
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.2.0/EmbeddedTargets/STM32F4/Functions/HAL.mo:5:3-11:14:writable] Warning: External function annotation should occur on the external-clause, not on the function.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.2.0/Incubate/OperatingSystem/DynamicArray.mo:6:3-94:18:writable] Warning: External function annotation should occur on the external-clause, not on the function.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.2.0/Incubate/Utilities/Functions.mo:1041:3-1062:27:writable] Warning: External function annotation should occur on the external-clause, not on the function.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.2.0/Incubate/Utilities/Functions.mo:1064:3-1092:25:writable] Warning: External function annotation should occur on the external-clause, not on the function.
"
[Timeout remaining time 180]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 3.0.1/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 3.0.1/package.mo): time 0.5655/0.5655, allocations: 0 / 0, free: 0 / 0
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.2.0/EmbeddedTargets/STM32F4/Functions/HAL.mo:5:3-11:14:writable] Warning: External function annotation should occur on the external-clause, not on the function.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.2.0/Incubate/OperatingSystem/DynamicArray.mo:6:3-94:18:writable] Warning: External function annotation should occur on the external-clause, not on the function.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.2.0/Incubate/Utilities/Functions.mo:1041:3-1062:27:writable] Warning: External function annotation should occur on the external-clause, not on the function.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.2.0/Incubate/Utilities/Functions.mo:1064:3-1092:25:writable] Warning: External function annotation should occur on the external-clause, not on the function.
"
[Timeout remaining time 179]
Using package AixLib with version 3.0.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 3.0.1/package.mo)
Using package SDF with version 0.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/SDF master/package.mo)
Using package Modelica_DeviceDrivers with version 2.2.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.2.0/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(AixLib.Utilities.Math.Functions.Examples.SpliceFunctionDerivativeCheck,fileNamePrefix="AixLib_AixLib_Utilities_Math_Functions_Examples_SpliceFunctionDerivativeCheck",fmuType="me_cs",version="3.0",platforms={"wasm"})
"" <> buildModelFMU(AixLib.Utilities.Math.Functions.Examples.SpliceFunctionDerivativeCheck,fileNamePrefix="AixLib_AixLib_Utilities_Math_Functions_Examples_SpliceFunctionDerivativeCheck",fmuType="me_cs",version="3.0",platforms={"wasm"}) [Timeout 660]
"Notification: Performance of FrontEnd - loaded program: time 3.938e-06/3.938e-06, allocations: 0 / 0, free: 0 / 0
Notification: Performance of FrontEnd - Absyn->SCode: time 2.276e-05/2.67e-05, allocations: 0 / 0, free: 0 / 0
Notification: Performance of NFInst.instantiate(AixLib.Utilities.Math.Functions.Examples.SpliceFunctionDerivativeCheck): time 0.001543/0.001569, allocations: 0 / 0, free: 0 / 0
Notification: Performance of NFInst.instExpressions: time 0.003204/0.004774, allocations: 0 / 0, free: 0 / 0
Notification: Performance of NFInst.updateImplicitVariability: time 3.728e-05/0.004811, allocations: 0 / 0, free: 0 / 0
Notification: Performance of NFTyping.typeComponents: time 2.375e-05/0.004835, allocations: 0 / 0, free: 0 / 0
Notification: Performance of NFTyping.typeBindings: time 3.087e-05/0.004866, allocations: 0 / 0, free: 0 / 0
Notification: Performance of NFTyping.typeClassSections: time 0.0006045/0.00547, allocations: 0 / 0, free: 0 / 0
Notification: Performance of NFFlatten.flatten: time 6.322e-05/0.005533, allocations: 0 / 0, free: 0 / 0
Notification: Performance of NFFlatten.resolveConnections: time 2.495e-05/0.005558, allocations: 0 / 0, free: 0 / 0
Notification: Performance of NFEvalConstants.evaluate: time 5.251e-05/0.005611, allocations: 0 / 0, free: 0 / 0
Notification: Performance of NFSimplifyModel.simplify: time 6.051e-05/0.005671, allocations: 0 / 0, free: 0 / 0
Notification: Performance of NFPackage.collectConstants: time 1.673e-05/0.005688, allocations: 0 / 0, free: 0 / 0
Notification: Performance of NFFlatten.collectFunctions: time 0.000635/0.006323, allocations: 0 / 0, free: 0 / 0
Notification: Performance of NFScalarize.scalarize: time 1.931e-05/0.006342, allocations: 0 / 0, free: 0 / 0
Notification: Performance of NFVerifyModel.verify: time 3.236e-05/0.006375, allocations: 0 / 0, free: 0 / 0
Notification: Performance of NFConvertDAE.convert: time 0.0003689/0.006744, allocations: 0 / 0, free: 0 / 0
Notification: Performance of FrontEnd - DAE generated: time 9.268e-06/0.006753, allocations: 0 / 0, free: 0 / 0
Notification: Performance of FrontEnd: time 3.767e-06/0.006757, allocations: 0 / 0, free: 0 / 0
Notification: Performance of Transformations before backend: time 6.162e-06/0.006763, allocations: 0 / 0, free: 0 / 0
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 8
 * Number of variables: 8
Notification: Performance of Generate backend data structure: time 0.00088/0.007643, allocations: 0 / 0, free: 0 / 0
Notification: Performance of prepare preOptimizeDAE: time 6.417e-05/0.007707, allocations: 0 / 0, free: 0 / 0
Notification: Performance of preOpt introduceOutputAliases (simulation): time 7.636e-05/0.007783, allocations: 0 / 0, free: 0 / 0
Notification: Performance of preOpt normalInlineFunction (simulation): time 7.933e-05/0.007863, allocations: 0 / 0, free: 0 / 0
Notification: Performance of preOpt evaluateParameters (simulation): time 0.0001774/0.00804, allocations: 0 / 0, free: 0 / 0
Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.768e-05/0.008058, allocations: 0 / 0, free: 0 / 0
Notification: Performance of preOpt expandDerOperator (simulation): time 4.353e-05/0.008101, allocations: 0 / 0, free: 0 / 0
Notification: Performance of preOpt clockPartitioning (simulation): time 0.0002477/0.008349, allocations: 0 / 0, free: 0 / 0
Notification: Performance of preOpt findStateOrder (simulation): time 1.569e-05/0.008365, allocations: 0 / 0, free: 0 / 0
Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.491e-05/0.00839, allocations: 0 / 0, free: 0 / 0
Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.967e-06/0.008394, allocations: 0 / 0, free: 0 / 0
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0001513/0.008545, allocations: 0 / 0, free: 0 / 0
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0003368/0.008882, allocations: 0 / 0, free: 0 / 0
Notification: Performance of preOpt comSubExp (simulation): time 0.0002441/0.009126, allocations: 0 / 0, free: 0 / 0
Notification: Performance of preOpt resolveLoops (simulation): time 0.0001003/0.009226, allocations: 0 / 0, free: 0 / 0
Notification: Performance of preOpt evalFunc (simulation): time 0.0003516/0.009578, allocations: 0 / 0, free: 0 / 0
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.228e-05/0.00962, allocations: 0 / 0, free: 0 / 0
Notification: Performance of pre-optimization done (n=8): time 3.974e-05/0.00966, allocations: 0 / 0, free: 0 / 0
Warning: Some equations could not be differentiated for following variables having attribute stateSelect=StateSelect.prefer. They will be treated as if they had stateSelect=StateSelect.default
========================================
1: x
2: deltax
Please use -d=bltdump for more information.
Notification: Performance of matching and sorting (n=17): time 0.05221/0.06187, allocations: 0 / 0, free: 0 / 0
Notification: Performance of inlineWhenForInitialization (initialization): time 7.246e-05/0.06195, allocations: 0 / 0, free: 0 / 0
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0001048/0.06205, allocations: 0 / 0, free: 0 / 0
Notification: Performance of collectPreVariables (initialization): time 0.000448/0.0625, allocations: 0 / 0, free: 0 / 0
Notification: Performance of collectInitialEqns (initialization): time 5.541e-05/0.06255, allocations: 0 / 0, free: 0 / 0
Notification: Performance of collectInitialBindings (initialization): time 0.0003881/0.06294, allocations: 0 / 0, free: 0 / 0
Notification: Performance of simplifyInitialFunctions (initialization): time 0.001233/0.06418, allocations: 0 / 0, free: 0 / 0
Notification: Performance of setup shared object (initialization): time 0.0002221/0.0644, allocations: 0 / 0, free: 0 / 0
Notification: Performance of preBalanceInitialSystem (initialization): time 0.002239/0.06664, allocations: 0 / 0, free: 0 / 0
Notification: Performance of partitionIndependentBlocks (initialization): time 0.002283/0.06892, allocations: 0 / 0, free: 0 / 0
Notification: Performance of analyzeInitialSystem (initialization): time 0.00711/0.07603, allocations: 0 / 0, free: 0 / 0
Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.559e-06/0.07603, allocations: 0 / 0, free: 0 / 0
Notification: Performance of matching and sorting (n=18) (initialization): time 0.007945/0.08398, allocations: 0 / 0, free: 0 / 0
Notification: Performance of prepare postOptimizeDAE: time 2.975e-05/0.08401, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.693e-06/0.08402, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt tearingSystem (initialization): time 2.115e-05/0.08404, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001815/0.08585, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 8.015e-06/0.08586, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007932/0.08665, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0004306/0.08708, allocations: 0 / 0, free: 0 / 0
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 1
 * 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 (18):
 * Single equations (assignments): 18
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 0
 * Mixed (continuous/discrete) equation systems: 0
Notification: Performance of prepare postOptimizeDAE: time 0.0008764/0.08796, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0007213/0.08868, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01109/0.09977, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.386e-05/0.09979, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt constantLinearSystem (simulation): time 9.888e-06/0.0998, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.52e-05/0.09981, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01114/0.111, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 9.418e-06/0.111, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001763/0.1127, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt tearingSystem (simulation): time 1.434e-05/0.1127, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0004403/0.1132, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.078e-05/0.1132, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.378e-06/0.1132, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01015/0.1233, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt removeConstants (simulation): time 0.0001095/0.1234, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0003373/0.1238, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0008437/0.1246, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.001304/0.1259, allocations: 0 / 0, free: 0 / 0
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.000372/0.1263, allocations: 0 / 0, free: 0 / 0
Notification: Performance of sorting global known variables: time 7.615e-05/0.1264, allocations: 0 / 0, free: 0 / 0
Notification: Performance of sort global known variables: time 2.404e-06/0.1264, allocations: 0 / 0, free: 0 / 0
Notification: Performance of remove unused functions: time 0.002174/0.1286, allocations: 0 / 0, free: 0 / 0
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 2
 * Number of states: 1 (y_comp)
 * 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 (40):
 * Single equations (assignments): 40
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 0
 * Mixed (continuous/discrete) equation systems: 0
Notification: Performance of Backend phase and start with SimCode phase: time 0.01308/0.1416, allocations: 0 / 0, free: 0 / 0
Notification: Performance of simCode: created initialization part: time 0.00506/0.1467, allocations: 0 / 0, free: 0 / 0
Notification: Performance of simCode: created event and clocks part: time 6.752e-06/0.1467, allocations: 0 / 0, free: 0 / 0
Notification: Performance of simCode: created simulation system equations: time 0.002715/0.1494, allocations: 0 / 0, free: 0 / 0
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00207/0.1515, allocations: 0 / 0, free: 0 / 0
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02778/0.1793, allocations: 0 / 0, free: 0 / 0
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0002304/0.1795, allocations: 0 / 0, free: 0 / 0
Notification: Performance of simCode: alias equations: time 0.001302/0.1808, allocations: 0 / 0, free: 0 / 0
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.004736/0.1855, allocations: 0 / 0, free: 0 / 0
Notification: Performance of SimCode: time 0.0005639/0.1861, allocations: 0 / 0, free: 0 / 0
Notification: Performance of FMU modelDescription.xml: time 0.001023/0.1871, allocations: 0 / 0, free: 0 / 0
Notification: Performance of FMU model kernel: time 0.001855/0.189, allocations: 0 / 0, free: 0 / 0
Notification: Performance of FMU translated model: time 0.0187/0.2077, allocations: 0 / 0, free: 0 / 0
Notification: Performance of FMU component link: time 6.171e-06/0.2077, allocations: 0 / 0, free: 0 / 0
Notification: Performance of FMU precompile: time 8.936e-06/0.2077, allocations: 0 / 0, free: 0 / 0
Notification: Performance of FMU write (0.1 MB unzipped): time 0.0002691/0.208, allocations: 0 / 0, free: 0 / 0
Notification: Building FMU for platform 'wasm' (1/1).
Notification: Finished FMU for platform 'wasm' (1/1).
"
[Timeout remaining time 660]
simulate(AixLib.Utilities.Math.Functions.Examples.SpliceFunctionDerivativeCheck,startTime=-1,stopTime=1,tolerance=1e-06,numberOfIntervals=2500,outputFormat="empty",variableFilter="",fileNamePrefix="AixLib_AixLib.Utilities.Math.Functions.Examples.SpliceFunctionDerivativeCheck",simflags=" -alarm=240  -lv LOG_STATS -startTime=-1 -stopTime=1 -tolerance=1e-06 -stepSize=0.0008 -noemit",resimulateExecutable="AixLib_AixLib_Utilities_Math_Functions_Examples_SpliceFunctionDerivativeCheck.fmu") [Timeout 240]
""
[Timeout remaining time 240]
simulate(AixLib.Utilities.Math.Functions.Examples.SpliceFunctionDerivativeCheck,startTime=-1,stopTime=1,tolerance=1e-06,numberOfIntervals=2500,outputFormat="empty",variableFilter="",fileNamePrefix="AixLib_AixLib.Utilities.Math.Functions.Examples.SpliceFunctionDerivativeCheck",simflags=" -alarm=240  -lv LOG_STATS -startTime=-1 -stopTime=1 -tolerance=1e-06 -stepSize=0.0008 -noemit -s fmi3:me:daskr",resimulateExecutable="AixLib_AixLib_Utilities_Math_Functions_Examples_SpliceFunctionDerivativeCheck.fmu") [Timeout 240]
""
[Timeout remaining time 240]
simulate(AixLib.Utilities.Math.Functions.Examples.SpliceFunctionDerivativeCheck,startTime=-1,stopTime=1,tolerance=1e-06,numberOfIntervals=2500,outputFormat="empty",variableFilter="",fileNamePrefix="AixLib_AixLib.Utilities.Math.Functions.Examples.SpliceFunctionDerivativeCheck",simflags=" -alarm=240  -lv LOG_STATS -startTime=-1 -stopTime=1 -tolerance=1e-06 -stepSize=0.0008 -noemit -s fmi3:cs",resimulateExecutable="AixLib_AixLib_Utilities_Math_Functions_Examples_SpliceFunctionDerivativeCheck.fmu") [Timeout 240]
""
[Timeout remaining time 240]
[Calling sys.exit(0), Time elapsed: 2.623637459008023]