Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildingSystems_BuildingSystems.BoundaryConditions.SolarGeometry.BaseClasses.Examples.IncidenceAngle.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 0.002579/0.002579, allocations: 85.48 kB / 19.44 MB, free: 344 kB / 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 0.003321/0.003321, allocations: 173.2 kB / 22.76 MB, free: 1.664 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 1.557/1.557, allocations: 177.1 MB / 203.1 MB, free: 5.609 MB / 186.7 MB
"
[Timeout remaining time 178]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 master/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 master/package.mo): time 0.003224/0.003224, allocations: 234 kB / 259.8 MB, free: 12.85 MB / 250.7 MB
"
[Timeout remaining time 180]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems master/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems master/package.mo): time 1.179/1.179, allocations: 138.5 MB / 454.7 MB, free: 1.492 MB / 362.7 MB
"
[Timeout remaining time 179]
Using package BuildingSystems with version 2.0.0-beta (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems master/package.mo)
Using package NcDataReader2 with version 2.5.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 master/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: translateModel(BuildingSystems.BoundaryConditions.SolarGeometry.BaseClasses.Examples.IncidenceAngle,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.BoundaryConditions.SolarGeometry.BaseClasses.Examples.IncidenceAngle")
translateModel(BuildingSystems.BoundaryConditions.SolarGeometry.BaseClasses.Examples.IncidenceAngle,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.BoundaryConditions.SolarGeometry.BaseClasses.Examples.IncidenceAngle") [Timeout 660]
"Notification: Performance of FrontEnd - loaded program: time 2.044e-06/2.044e-06, allocations: 0 / 0.5543 GB, free: 0.8711 MB / 474.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 3.14e-05/3.344e-05, allocations: 6.312 kB / 0.5543 GB, free: 0.8633 MB / 474.7 MB
Notification: Performance of NFInst.instantiate(BuildingSystems.BoundaryConditions.SolarGeometry.BaseClasses.Examples.IncidenceAngle): time 0.01481/0.01485, allocations: 4.783 MB / 0.559 GB, free: 12.05 MB / 490.7 MB
Notification: Performance of NFInst.instExpressions: time 0.3694/0.3842, allocations: 146.5 MB / 0.702 GB, free: 5.609 MB / 0.5105 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.0008764/0.3851, allocations: 23.81 kB / 0.7021 GB, free: 5.586 MB / 0.5105 GB
Notification: Performance of NFTyping.typeComponents: time 0.0004898/0.3856, allocations: 213.3 kB / 0.7023 GB, free: 5.379 MB / 0.5105 GB
Notification: Performance of NFTyping.typeBindings: time 0.001503/0.3871, allocations: 0.6046 MB / 0.7029 GB, free: 4.789 MB / 0.5105 GB
Notification: Performance of NFTyping.typeClassSections: time 0.001602/0.3887, allocations: 0.8676 MB / 0.7037 GB, free: 3.945 MB / 0.5105 GB
Notification: Performance of NFFlatten.flatten: time 0.001099/0.3898, allocations: 1.502 MB / 0.7052 GB, free: 2.438 MB / 0.5105 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.0005437/0.3903, allocations: 398 kB / 0.7056 GB, free: 2.027 MB / 0.5105 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.0007509/0.3911, allocations: 0.7757 MB / 0.7063 GB, free: 1.25 MB / 0.5105 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.0004644/0.3916, allocations: 434.7 kB / 0.7067 GB, free: 0.8242 MB / 0.5105 GB
Notification: Performance of NFPackage.collectConstants: time 0.0001545/0.3917, allocations: 120 kB / 0.7068 GB, free: 0.707 MB / 0.5105 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.0007789/0.3925, allocations: 0.4935 MB / 0.7073 GB, free: 224 kB / 0.5105 GB
Notification: Performance of NFScalarize.scalarize: time 0.0002697/0.3928, allocations: 318.9 kB / 0.7076 GB, free: 15.91 MB / 0.5261 GB
Notification: Performance of NFVerifyModel.verify: time 0.0005104/0.3933, allocations: 406.9 kB / 0.708 GB, free: 15.51 MB / 0.5261 GB
Notification: Performance of NFConvertDAE.convert: time 0.002614/0.3959, allocations: 1.834 MB / 0.7098 GB, free: 13.67 MB / 0.5261 GB
Notification: Performance of FrontEnd - DAE generated: time 3.587e-06/0.3959, allocations: 0 / 0.7098 GB, free: 13.67 MB / 0.5261 GB
Notification: Performance of FrontEnd: time 1.473e-06/0.3959, allocations: 4 kB / 0.7098 GB, free: 13.66 MB / 0.5261 GB
Notification: Performance of Transformations before backend: time 1.534e-05/0.3959, allocations: 0 / 0.7098 GB, free: 13.66 MB / 0.5261 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 223
 * Number of variables: 223
Notification: Performance of Generate backend data structure: time 0.003095/0.399, allocations: 1.634 MB / 0.7114 GB, free: 11.99 MB / 0.5261 GB
Notification: Performance of prepare preOptimizeDAE: time 4.138e-05/0.399, allocations: 8.75 kB / 0.7114 GB, free: 11.98 MB / 0.5261 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002043/0.4011, allocations: 375.3 kB / 0.7118 GB, free: 11.61 MB / 0.5261 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.001435/0.4025, allocations: 0.7403 MB / 0.7125 GB, free: 10.84 MB / 0.5261 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 9.335e-05/0.4026, allocations: 73.19 kB / 0.7126 GB, free: 10.78 MB / 0.5261 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001486/0.4028, allocations: 95.94 kB / 0.7127 GB, free: 10.68 MB / 0.5261 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.002072/0.4048, allocations: 1.251 MB / 0.7139 GB, free: 9.316 MB / 0.5261 GB
Notification: Performance of preOpt findStateOrder (simulation): time 2.413e-05/0.4049, allocations: 0 / 0.7139 GB, free: 9.316 MB / 0.5261 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.798e-05/0.405, allocations: 40 kB / 0.7139 GB, free: 9.277 MB / 0.5261 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.126e-05/0.405, allocations: 24 kB / 0.7139 GB, free: 9.254 MB / 0.5261 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002036/0.407, allocations: 1.069 MB / 0.715 GB, free: 8.184 MB / 0.5261 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.005509/0.4125, allocations: 3.061 MB / 0.718 GB, free: 5.02 MB / 0.5261 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.001571/0.4141, allocations: 0.7146 MB / 0.7187 GB, free: 4.297 MB / 0.5261 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0005717/0.4147, allocations: 265.5 kB / 0.7189 GB, free: 4.035 MB / 0.5261 GB
Notification: Performance of preOpt evalFunc (simulation): time 9.465e-05/0.4148, allocations: 32.62 kB / 0.719 GB, free: 4.004 MB / 0.5261 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001095/0.4159, allocations: 0.655 MB / 0.7196 GB, free: 3.305 MB / 0.5261 GB
Notification: Performance of pre-optimization done (n=88): time 2.424e-06/0.4159, allocations: 0 / 0.7196 GB, free: 3.305 MB / 0.5261 GB
Notification: Performance of matching and sorting (n=88): time 0.003616/0.4195, allocations: 1.136 MB / 0.7207 GB, free: 2.16 MB / 0.5261 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001429/0.4196, allocations: 196.9 kB / 0.7209 GB, free: 1.922 MB / 0.5261 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001119/0.4207, allocations: 0.7807 MB / 0.7217 GB, free: 1.129 MB / 0.5261 GB
Notification: Performance of collectPreVariables (initialization): time 8.434e-05/0.4208, allocations: 45.7 kB / 0.7217 GB, free: 1.078 MB / 0.5261 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0004811/0.4213, allocations: 0.4959 MB / 0.7222 GB, free: 0.5742 MB / 0.5261 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0003288/0.4216, allocations: 313.5 kB / 0.7225 GB, free: 272 kB / 0.5261 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003426/0.422, allocations: 216.2 kB / 0.7227 GB, free: 48 kB / 0.5261 GB
Notification: Performance of setup shared object (initialization): time 0.0005083/0.4225, allocations: 0.6172 MB / 0.7233 GB, free: 15.42 MB / 0.5417 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0005543/0.423, allocations: 245.9 kB / 0.7235 GB, free: 15.18 MB / 0.5417 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0008263/0.4239, allocations: 0.4978 MB / 0.724 GB, free: 14.63 MB / 0.5417 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.001231/0.4251, allocations: 0.6002 MB / 0.7246 GB, free: 14.02 MB / 0.5417 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.497e-06/0.4251, allocations: 0 / 0.7246 GB, free: 14.02 MB / 0.5417 GB
Notification: Performance of matching and sorting (n=107) (initialization): time 0.002321/0.4274, allocations: 0.8754 MB / 0.7254 GB, free: 13.12 MB / 0.5417 GB
Notification: Performance of prepare postOptimizeDAE: time 2.215e-05/0.4274, allocations: 8 kB / 0.7255 GB, free: 13.12 MB / 0.5417 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.897e-06/0.4274, allocations: 0 / 0.7255 GB, free: 13.12 MB / 0.5417 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.001015/0.4285, allocations: 135.6 kB / 0.7256 GB, free: 12.98 MB / 0.5417 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0007684/0.4292, allocations: 180.2 kB / 0.7258 GB, free: 12.8 MB / 0.5417 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002717/0.4319, allocations: 2.032 MB / 0.7277 GB, free: 10.64 MB / 0.5417 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007682/0.4327, allocations: 71.59 kB / 0.7278 GB, free: 10.57 MB / 0.5417 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.949e-05/0.4328, allocations: 40.97 kB / 0.7278 GB, free: 10.54 MB / 0.5417 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 4
 * Number of states: 0 ()
 * Number of discrete variables: 20 (weaDat.conTim.canRepeatWeatherFile,weaDat.conTimMin.canRepeatWeatherFile,weaDat.decAng.tNext,$PRE.weaDat.decAng.tNext,weaDat.eqnTim.tNext,$PRE.weaDat.eqnTim.tNext,weaDat.conTim.tNext,$PRE.weaDat.conTim.tNext,weaDat.conTimMin.tNext,$PRE.weaDat.conTimMin.tNext,weaDat.locTim.tNext,$PRE.weaDat.locTim.tNext,decAng.tNext,$PRE.decAng.tNext,$whenCondition1,$whenCondition2,$whenCondition3,$whenCondition4,$whenCondition5,$whenCondition6)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (105):
 * Single equations (assignments): 104
 * 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
   {(1,2)}
Notification: Performance of prepare postOptimizeDAE: time 0.0005056/0.4333, allocations: 286.6 kB / 0.7281 GB, free: 10.25 MB / 0.5417 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002619/0.4336, allocations: 123.4 kB / 0.7282 GB, free: 10.12 MB / 0.5417 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002802/0.4364, allocations: 1.09 MB / 0.7293 GB, free: 9.027 MB / 0.5417 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.065e-05/0.4364, allocations: 8 kB / 0.7293 GB, free: 9.02 MB / 0.5417 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 2.756e-06/0.4364, allocations: 0 / 0.7293 GB, free: 9.02 MB / 0.5417 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.8e-05/0.4364, allocations: 7.969 kB / 0.7293 GB, free: 9.012 MB / 0.5417 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001363/0.4378, allocations: 0.7968 MB / 0.7301 GB, free: 8.184 MB / 0.5417 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.595e-06/0.4378, allocations: 3.984 kB / 0.7301 GB, free: 8.18 MB / 0.5417 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006782/0.4385, allocations: 151.8 kB / 0.7302 GB, free: 8.031 MB / 0.5417 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.0008049/0.4393, allocations: 123.6 kB / 0.7304 GB, free: 7.906 MB / 0.5417 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.223e-05/0.4393, allocations: 31.95 kB / 0.7304 GB, free: 7.875 MB / 0.5417 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.002496/0.4418, allocations: 2.054 MB / 0.7324 GB, free: 5.699 MB / 0.5417 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.2e-06/0.4418, allocations: 7.875 kB / 0.7324 GB, free: 5.691 MB / 0.5417 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002407/0.4442, allocations: 0.9852 MB / 0.7334 GB, free: 4.676 MB / 0.5417 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0005112/0.4447, allocations: 207.8 kB / 0.7336 GB, free: 4.473 MB / 0.5417 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001428/0.4449, allocations: 31.89 kB / 0.7336 GB, free: 4.441 MB / 0.5417 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0005807/0.4455, allocations: 49.44 kB / 0.7336 GB, free: 4.395 MB / 0.5417 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001939/0.4457, allocations: 84.84 kB / 0.7337 GB, free: 4.312 MB / 0.5417 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 8.809e-05/0.4458, allocations: 39.97 kB / 0.7338 GB, free: 4.273 MB / 0.5417 GB
Notification: Performance of sorting global known variables: time 0.0007478/0.4465, allocations: 0.5029 MB / 0.7343 GB, free: 3.773 MB / 0.5417 GB
Notification: Performance of sort global known variables: time 9e-08/0.4465, allocations: 4 kB / 0.7343 GB, free: 3.77 MB / 0.5417 GB
Notification: Performance of remove unused functions: time 0.0009823/0.4475, allocations: 351.1 kB / 0.7346 GB, free: 3.426 MB / 0.5417 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 1
 * Number of states: 0 ()
 * Number of discrete variables: 12 ($whenCondition6,$whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,decAng.tNext,weaDat.locTim.tNext,weaDat.conTimMin.tNext,weaDat.conTim.tNext,weaDat.eqnTim.tNext,weaDat.decAng.tNext)
 * Number of discrete states: 6 (decAng.tNext,weaDat.locTim.tNext,weaDat.conTimMin.tNext,weaDat.conTim.tNext,weaDat.eqnTim.tNext,weaDat.decAng.tNext)
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (100):
 * Single equations (assignments): 93
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 6
 * 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
   {(1,3)}
Notification: Performance of Backend phase and start with SimCode phase: time 0.003402/0.4509, allocations: 0.6586 MB / 0.7352 GB, free: 3.035 MB / 0.5417 GB
Notification: Performance of simCode: created initialization part: time 0.002018/0.4529, allocations: 0.8941 MB / 0.7361 GB, free: 2.125 MB / 0.5417 GB
Notification: Performance of simCode: created event and clocks part: time 3.637e-06/0.4529, allocations: 0 / 0.7361 GB, free: 2.125 MB / 0.5417 GB
Notification: Performance of simCode: created simulation system equations: time 0.001131/0.454, allocations: 0.5947 MB / 0.7367 GB, free: 1.508 MB / 0.5417 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001405/0.4554, allocations: 340.2 kB / 0.737 GB, free: 1.207 MB / 0.5417 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003447/0.4589, allocations: 1.709 MB / 0.7387 GB, free: 15.47 MB / 0.5573 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005359/0.4594, allocations: 453.8 kB / 0.7391 GB, free: 15 MB / 0.5573 GB
Notification: Performance of simCode: alias equations: time 0.0008304/0.4603, allocations: 258.7 kB / 0.7394 GB, free: 14.74 MB / 0.5573 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003221/0.4606, allocations: 124.4 kB / 0.7395 GB, free: 14.62 MB / 0.5573 GB
Notification: Performance of SimCode: time 1.322e-06/0.4606, allocations: 3.938 kB / 0.7395 GB, free: 14.62 MB / 0.5573 GB
Notification: Performance of Templates: time 0.03173/0.4923, allocations: 16.21 MB / 0.7553 GB, free: 14.71 MB / 0.573 GB
"
[Timeout remaining time 659]
make -j1 -f BuildingSystems_BuildingSystems.BoundaryConditions.SolarGeometry.BaseClasses.Examples.IncidenceAngle.makefile [Timeout 660]
(rm -f BuildingSystems_BuildingSystems.BoundaryConditions.SolarGeometry.BaseClasses.Examples.IncidenceAngle.pipe ; mkfifo BuildingSystems_BuildingSystems.BoundaryConditions.SolarGeometry.BaseClasses.Examples.IncidenceAngle.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.BoundaryConditions.SolarGeometry.BaseClasses.Examples.IncidenceAngle.pipe >> ../files/BuildingSystems_BuildingSystems.BoundaryConditions.SolarGeometry.BaseClasses.Examples.IncidenceAngle.sim & ./BuildingSystems_BuildingSystems.BoundaryConditions.SolarGeometry.BaseClasses.Examples.IncidenceAngle -abortSlowSimulation -alarm=240  -lv LOG_STATS > BuildingSystems_BuildingSystems.BoundaryConditions.SolarGeometry.BaseClasses.Examples.IncidenceAngle.pipe 2>&1) [Timeout 240]
[Calling sys.exit(0), Time elapsed: 6.964538194006309]