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 0.001161/0.001161, allocations: 92.22 kB / 19.65 MB, free: 280 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 0.000947/0.000947, allocations: 169 kB / 23.02 MB, free: 1.551 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 0.8758/0.8758, allocations: 177.1 MB / 203.4 MB, free: 5.543 MB / 186.7 MB
"
[Timeout remaining time 179]
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 0.002189/0.002189, allocations: 244.9 kB / 260.2 MB, free: 12.82 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 0.7355/0.7355, allocations: 138.4 MB / 455.2 MB, free: 1.559 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 2.675e-06/2.675e-06, allocations: 4 kB / 0.5551 GB, free: 0.5625 MB / 474.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 1.911e-05/2.178e-05, allocations: 2.312 kB / 0.5551 GB, free: 0.5586 MB / 474.7 MB
Notification: Performance of NFInst.instantiate(BuildingSystems.BoundaryConditions.SolarGeometry.BaseClasses.Examples.IncidenceAngle): time 0.005262/0.005283, allocations: 4.856 MB / 0.5598 GB, free: 11.68 MB / 490.7 MB
Notification: Performance of NFInst.instExpressions: time 0.3147/0.32, allocations: 146.8 MB / 0.7032 GB, free: 5.172 MB / 0.5105 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.000638/0.3206, allocations: 23.81 kB / 0.7032 GB, free: 5.148 MB / 0.5105 GB
Notification: Performance of NFTyping.typeComponents: time 0.0004766/0.3211, allocations: 202.1 kB / 0.7034 GB, free: 4.949 MB / 0.5105 GB
Notification: Performance of NFTyping.typeBindings: time 0.001141/0.3223, allocations: 0.6195 MB / 0.704 GB, free: 4.344 MB / 0.5105 GB
Notification: Performance of NFTyping.typeClassSections: time 0.001115/0.3234, allocations: 0.867 MB / 0.7048 GB, free: 3.5 MB / 0.5105 GB
Notification: Performance of NFFlatten.flatten: time 0.0007355/0.3241, allocations: 1.506 MB / 0.7063 GB, free: 1.988 MB / 0.5105 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.0004223/0.3245, allocations: 394 kB / 0.7067 GB, free: 1.582 MB / 0.5105 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.000578/0.3251, allocations: 0.8068 MB / 0.7075 GB, free: 0.7734 MB / 0.5105 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.0002768/0.3254, allocations: 395.3 kB / 0.7078 GB, free: 396 kB / 0.5105 GB
Notification: Performance of NFPackage.collectConstants: time 8.47e-05/0.3255, allocations: 112 kB / 0.7079 GB, free: 284 kB / 0.5105 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.0005106/0.326, allocations: 0.4897 MB / 0.7084 GB, free: 15.79 MB / 0.5261 GB
Notification: Performance of NFScalarize.scalarize: time 0.000193/0.3262, allocations: 306.9 kB / 0.7087 GB, free: 15.49 MB / 0.5261 GB
Notification: Performance of NFVerifyModel.verify: time 0.0002399/0.3264, allocations: 379 kB / 0.7091 GB, free: 15.12 MB / 0.5261 GB
Notification: Performance of NFConvertDAE.convert: time 0.0009865/0.3274, allocations: 1.276 MB / 0.7103 GB, free: 13.84 MB / 0.5261 GB
Notification: Performance of FrontEnd - DAE generated: time 4.128e-06/0.3274, allocations: 0 / 0.7103 GB, free: 13.84 MB / 0.5261 GB
Notification: Performance of FrontEnd: time 1.563e-06/0.3274, allocations: 0 / 0.7103 GB, free: 13.84 MB / 0.5261 GB
Notification: Performance of Transformations before backend: time 8.396e-06/0.3274, allocations: 0 / 0.7103 GB, free: 13.84 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 0.001465/0.3289, allocations: 1.54 MB / 0.7118 GB, free: 12.26 MB / 0.5261 GB
Notification: Performance of prepare preOptimizeDAE: time 3.129e-05/0.3289, allocations: 8.75 kB / 0.7118 GB, free: 12.25 MB / 0.5261 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.000986/0.3299, allocations: 375.4 kB / 0.7122 GB, free: 11.88 MB / 0.5261 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.000672/0.3306, allocations: 0.7305 MB / 0.7129 GB, free: 11.12 MB / 0.5261 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 4e-05/0.3306, allocations: 66.56 kB / 0.713 GB, free: 11.06 MB / 0.5261 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 7.856e-05/0.3307, allocations: 95.94 kB / 0.7131 GB, free: 10.96 MB / 0.5261 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.0008772/0.3316, allocations: 0.9594 MB / 0.714 GB, free: 9.91 MB / 0.5261 GB
Notification: Performance of preOpt findStateOrder (simulation): time 1.789e-05/0.3316, allocations: 7.922 kB / 0.714 GB, free: 9.902 MB / 0.5261 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.648e-05/0.3316, allocations: 40 kB / 0.714 GB, free: 9.863 MB / 0.5261 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0002438/0.3319, allocations: 20 kB / 0.7141 GB, free: 9.844 MB / 0.5261 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0008148/0.3327, allocations: 0.8231 MB / 0.7149 GB, free: 9.016 MB / 0.5261 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002073/0.3348, allocations: 2.313 MB / 0.7171 GB, free: 6.648 MB / 0.5261 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.0006857/0.3354, allocations: 0.4948 MB / 0.7176 GB, free: 6.148 MB / 0.5261 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0002329/0.3357, allocations: 185.5 kB / 0.7178 GB, free: 5.965 MB / 0.5261 GB
Notification: Performance of preOpt evalFunc (simulation): time 5.347e-05/0.3357, allocations: 36.62 kB / 0.7178 GB, free: 5.93 MB / 0.5261 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0004594/0.3362, allocations: 0.5119 MB / 0.7183 GB, free: 5.371 MB / 0.5261 GB
Notification: Performance of pre-optimization done (n=88): time 2.104e-06/0.3362, allocations: 0 / 0.7183 GB, free: 5.371 MB / 0.5261 GB
Notification: Performance of matching and sorting (n=88): time 0.001506/0.3377, allocations: 0.8743 MB / 0.7192 GB, free: 4.488 MB / 0.5261 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 6.545e-05/0.3378, allocations: 196.9 kB / 0.7194 GB, free: 4.254 MB / 0.5261 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.000425/0.3382, allocations: 0.5847 MB / 0.7199 GB, free: 3.66 MB / 0.5261 GB
Notification: Performance of collectPreVariables (initialization): time 4.656e-05/0.3382, allocations: 45.7 kB / 0.72 GB, free: 3.609 MB / 0.5261 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0002097/0.3385, allocations: 471.8 kB / 0.7204 GB, free: 3.141 MB / 0.5261 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0001427/0.3386, allocations: 293.5 kB / 0.7207 GB, free: 2.852 MB / 0.5261 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.000168/0.3388, allocations: 192.2 kB / 0.7209 GB, free: 2.652 MB / 0.5261 GB
Notification: Performance of setup shared object (initialization): time 0.0003176/0.3391, allocations: 0.5664 MB / 0.7214 GB, free: 2.074 MB / 0.5261 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002119/0.3393, allocations: 141.9 kB / 0.7216 GB, free: 1.938 MB / 0.5261 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0003133/0.3396, allocations: 389.8 kB / 0.722 GB, free: 1.508 MB / 0.5261 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0004936/0.3401, allocations: 406.6 kB / 0.7223 GB, free: 1.094 MB / 0.5261 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.637e-06/0.3401, allocations: 3.984 kB / 0.7223 GB, free: 1.09 MB / 0.5261 GB
Notification: Performance of matching and sorting (n=107) (initialization): time 0.0009371/0.341, allocations: 0.6841 MB / 0.723 GB, free: 404 kB / 0.5261 GB
Notification: Performance of prepare postOptimizeDAE: time 1.445e-05/0.3411, allocations: 4 kB / 0.723 GB, free: 400 kB / 0.5261 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.893e-06/0.3411, allocations: 7.984 kB / 0.723 GB, free: 392 kB / 0.5261 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.00043/0.3415, allocations: 131.6 kB / 0.7231 GB, free: 256 kB / 0.5261 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003664/0.3419, allocations: 171.7 kB / 0.7233 GB, free: 84 kB / 0.5261 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001191/0.343, allocations: 1.9 MB / 0.7252 GB, free: 14.05 MB / 0.5417 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002606/0.3433, allocations: 79.58 kB / 0.7252 GB, free: 13.97 MB / 0.5417 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.479e-05/0.3434, allocations: 35.97 kB / 0.7253 GB, free: 13.94 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 0.0001973/0.3435, allocations: 222.4 kB / 0.7255 GB, free: 13.71 MB / 0.5417 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001208/0.3437, allocations: 123.3 kB / 0.7256 GB, free: 13.59 MB / 0.5417 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001179/0.3448, allocations: 0.9061 MB / 0.7265 GB, free: 12.68 MB / 0.5417 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.152e-06/0.3449, allocations: 8 kB / 0.7265 GB, free: 12.67 MB / 0.5417 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 1.583e-06/0.3449, allocations: 0 / 0.7265 GB, free: 12.67 MB / 0.5417 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 8.436e-06/0.3449, allocations: 11.97 kB / 0.7265 GB, free: 12.66 MB / 0.5417 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0004846/0.3454, allocations: 0.6022 MB / 0.7271 GB, free: 12.02 MB / 0.5417 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.366e-06/0.3454, allocations: 2.312 kB / 0.7271 GB, free: 12.02 MB / 0.5417 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000311/0.3457, allocations: 151.8 kB / 0.7272 GB, free: 11.87 MB / 0.5417 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.0003223/0.346, allocations: 111.6 kB / 0.7274 GB, free: 11.75 MB / 0.5417 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.632e-05/0.346, allocations: 35.91 kB / 0.7274 GB, free: 11.72 MB / 0.5417 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001102/0.3471, allocations: 1.921 MB / 0.7293 GB, free: 9.676 MB / 0.5417 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.824e-06/0.3471, allocations: 3.938 kB / 0.7293 GB, free: 9.672 MB / 0.5417 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0009427/0.3481, allocations: 0.7821 MB / 0.73 GB, free: 8.859 MB / 0.5417 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.000219/0.3483, allocations: 207.8 kB / 0.7302 GB, free: 8.656 MB / 0.5417 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 6.907e-05/0.3484, allocations: 23.95 kB / 0.7302 GB, free: 8.633 MB / 0.5417 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000227/0.3486, allocations: 44.88 kB / 0.7303 GB, free: 8.59 MB / 0.5417 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001014/0.3487, allocations: 76.84 kB / 0.7304 GB, free: 8.516 MB / 0.5417 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.635e-05/0.3487, allocations: 43.97 kB / 0.7304 GB, free: 8.473 MB / 0.5417 GB
Notification: Performance of sorting global known variables: time 0.0002751/0.349, allocations: 399 kB / 0.7308 GB, free: 8.09 MB / 0.5417 GB
Notification: Performance of sort global known variables: time 8e-08/0.349, allocations: 4 kB / 0.7308 GB, free: 8.086 MB / 0.5417 GB
Notification: Performance of remove unused functions: time 0.0004977/0.3495, allocations: 347.1 kB / 0.7311 GB, free: 7.746 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 0.001132/0.3506, allocations: 0.6336 MB / 0.7317 GB, free: 7.359 MB / 0.5417 GB
Notification: Performance of simCode: created initialization part: time 0.0008138/0.3515, allocations: 0.683 MB / 0.7324 GB, free: 6.66 MB / 0.5417 GB
Notification: Performance of simCode: created event and clocks part: time 1.903e-06/0.3515, allocations: 0 / 0.7324 GB, free: 6.66 MB / 0.5417 GB
Notification: Performance of simCode: created simulation system equations: time 0.0004334/0.3519, allocations: 493.2 kB / 0.7329 GB, free: 6.16 MB / 0.5417 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0006315/0.3525, allocations: 350.5 kB / 0.7332 GB, free: 5.855 MB / 0.5417 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001976/0.3545, allocations: 1.588 MB / 0.7348 GB, free: 4.234 MB / 0.5417 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0001086/0.3546, allocations: 207.1 kB / 0.735 GB, free: 4.008 MB / 0.5417 GB
Notification: Performance of simCode: alias equations: time 0.0004038/0.355, allocations: 259 kB / 0.7352 GB, free: 3.75 MB / 0.5417 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003038/0.3553, allocations: 112.4 kB / 0.7353 GB, free: 3.641 MB / 0.5417 GB
Notification: Performance of SimCode: time 7.52e-07/0.3553, allocations: 0 / 0.7353 GB, free: 3.641 MB / 0.5417 GB
Notification: Performance of Templates: time 0.0173/0.3726, allocations: 16.96 MB / 0.7519 GB, free: 2.98 MB / 0.5573 GB
"
[Timeout remaining time 660]
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: 4.317052063997835]