Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_11_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3.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 0.0009489/0.0009489, allocations: 77.88 kB / 20.68 MB, free: 3.809 MB / 18.57 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 0.0008828/0.0008828, allocations: 177 kB / 24.09 MB, free: 412 kB / 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 0.9271/0.9271, allocations: 177.1 MB / 204.5 MB, free: 5.488 MB / 186.7 MB
"
[Timeout remaining time 179]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.2-maint.11.x/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.2-maint.11.x/package.mo): time 1.703/1.703, allocations: 359 MB / 0.6055 GB, free: 10.88 MB / 0.573 GB
"
[Timeout remaining time 178]
Using package Buildings with version 11.1.2 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.2-maint.11.x/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(Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3,tolerance=1e-06,outputFormat="mat",numberOfIntervals=86400,variableFilter="time|mean.y|reference.y.[0-9,]+.|assEqu.diff|assEqu.threShold|assEqu.satisfied",fileNamePrefix="Buildings_11_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3")
translateModel(Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3,tolerance=1e-06,outputFormat="mat",numberOfIntervals=86400,variableFilter="time|mean.y|reference.y.[0-9,]+.|assEqu.diff|assEqu.threShold|assEqu.satisfied",fileNamePrefix="Buildings_11_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3") [Timeout 300]
"Notification: Performance of FrontEnd - loaded program: time 2.304e-06/2.304e-06, allocations: 0 / 0.7875 GB, free: 12.2 MB / 0.7448 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 2.551e-05/2.781e-05, allocations: 3.531 kB / 0.7875 GB, free: 12.2 MB / 0.7448 GB
Notification: Performance of NFInst.instantiate(Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3): time 0.1226/0.1227, allocations: 136.5 MB / 0.9209 GB, free: 3.23 MB / 0.8698 GB
Notification: Performance of NFInst.instExpressions: time 0.015/0.1377, allocations: 19.46 MB / 0.9399 GB, free: 15.71 MB / 0.9011 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.0008246/0.1385, allocations: 67.44 kB / 0.9399 GB, free: 15.64 MB / 0.9011 GB
Notification: Performance of NFTyping.typeComponents: time 0.001139/0.1396, allocations: 1.176 MB / 0.9411 GB, free: 14.46 MB / 0.9011 GB
Notification: Performance of NFTyping.typeBindings: time 0.0009734/0.1406, allocations: 0.9374 MB / 0.942 GB, free: 13.52 MB / 0.9011 GB
Notification: Performance of NFTyping.typeClassSections: time 0.000519/0.1411, allocations: 366.9 kB / 0.9423 GB, free: 13.16 MB / 0.9011 GB
Notification: Performance of NFFlatten.flatten: time 0.0008874/0.142, allocations: 1.313 MB / 0.9436 GB, free: 11.85 MB / 0.9011 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.0005727/0.1426, allocations: 0.5628 MB / 0.9442 GB, free: 11.28 MB / 0.9011 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.0009714/0.1436, allocations: 0.8575 MB / 0.945 GB, free: 10.42 MB / 0.9011 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.000598/0.1441, allocations: 0.8519 MB / 0.9458 GB, free: 9.57 MB / 0.9011 GB
Notification: Performance of NFPackage.collectConstants: time 7.388e-05/0.1442, allocations: 68 kB / 0.9459 GB, free: 9.504 MB / 0.9011 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.0001571/0.1444, allocations: 119.8 kB / 0.946 GB, free: 9.387 MB / 0.9011 GB
Notification: Performance of NFScalarize.scalarize: time 0.0003689/0.1447, allocations: 336.6 kB / 0.9463 GB, free: 9.059 MB / 0.9011 GB
Notification: Performance of NFVerifyModel.verify: time 0.00018/0.1449, allocations: 283.1 kB / 0.9466 GB, free: 8.781 MB / 0.9011 GB
Notification: Performance of NFConvertDAE.convert: time 0.0006007/0.1455, allocations: 0.7939 MB / 0.9474 GB, free: 7.984 MB / 0.9011 GB
Notification: Performance of FrontEnd - DAE generated: time 3.917e-06/0.1455, allocations: 0 / 0.9474 GB, free: 7.984 MB / 0.9011 GB
Notification: Performance of FrontEnd: time 1.162e-06/0.1455, allocations: 0 / 0.9474 GB, free: 7.984 MB / 0.9011 GB
Notification: Performance of Transformations before backend: time 7.554e-06/0.1455, allocations: 0 / 0.9474 GB, free: 7.984 MB / 0.9011 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 107
 * Number of variables: 107
Notification: Performance of Generate backend data structure: time 0.001341/0.1469, allocations: 1.639 MB / 0.949 GB, free: 6.297 MB / 0.9011 GB
Notification: Performance of prepare preOptimizeDAE: time 3.336e-05/0.1469, allocations: 15.97 kB / 0.949 GB, free: 6.281 MB / 0.9011 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001373/0.1471, allocations: 176 kB / 0.9492 GB, free: 6.109 MB / 0.9011 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.0005076/0.1476, allocations: 0.6091 MB / 0.9498 GB, free: 5.461 MB / 0.9011 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 8.717e-05/0.1476, allocations: 96.39 kB / 0.9499 GB, free: 5.355 MB / 0.9011 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 5.246e-05/0.1477, allocations: 48 kB / 0.9499 GB, free: 5.309 MB / 0.9011 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.0003852/0.1481, allocations: 360.1 kB / 0.9502 GB, free: 4.938 MB / 0.9011 GB
Notification: Performance of preOpt findStateOrder (simulation): time 1.251e-05/0.1481, allocations: 4 kB / 0.9502 GB, free: 4.934 MB / 0.9011 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.531e-05/0.1481, allocations: 16 kB / 0.9503 GB, free: 4.918 MB / 0.9011 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 9.087e-06/0.1481, allocations: 15.94 kB / 0.9503 GB, free: 4.902 MB / 0.9011 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0001796/0.1483, allocations: 134.9 kB / 0.9504 GB, free: 4.77 MB / 0.9011 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.001767/0.1501, allocations: 1.605 MB / 0.952 GB, free: 3.125 MB / 0.9011 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.0003043/0.1504, allocations: 240.7 kB / 0.9522 GB, free: 2.875 MB / 0.9011 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0002109/0.1506, allocations: 155 kB / 0.9523 GB, free: 2.723 MB / 0.9011 GB
Notification: Performance of preOpt evalFunc (simulation): time 2.342e-05/0.1506, allocations: 12.27 kB / 0.9524 GB, free: 2.711 MB / 0.9011 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0001974/0.1508, allocations: 185.4 kB / 0.9525 GB, free: 2.516 MB / 0.9011 GB
Notification: Performance of pre-optimization done (n=44): time 1.924e-06/0.1508, allocations: 0 / 0.9525 GB, free: 2.516 MB / 0.9011 GB
Notification: Performance of matching and sorting (n=44): time 0.00101/0.1518, allocations: 0.6868 MB / 0.9532 GB, free: 1.812 MB / 0.9011 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 2.927e-05/0.1519, allocations: 59.41 kB / 0.9533 GB, free: 1.742 MB / 0.9011 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0007446/0.1526, allocations: 1.225 MB / 0.9545 GB, free: 0.5078 MB / 0.9011 GB
Notification: Performance of collectPreVariables (initialization): time 2.844e-05/0.1526, allocations: 41.69 kB / 0.9545 GB, free: 472 kB / 0.9011 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0003295/0.153, allocations: 0.6423 MB / 0.9551 GB, free: 15.82 MB / 0.9167 GB
Notification: Performance of collectInitialBindings (initialization): time 8.229e-05/0.153, allocations: 150.8 kB / 0.9553 GB, free: 15.67 MB / 0.9167 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001028/0.1531, allocations: 115.9 kB / 0.9554 GB, free: 15.55 MB / 0.9167 GB
Notification: Performance of setup shared object (initialization): time 0.0001064/0.1533, allocations: 0.4964 MB / 0.9559 GB, free: 15.04 MB / 0.9167 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 8.031e-05/0.1533, allocations: 57.27 kB / 0.9559 GB, free: 14.99 MB / 0.9167 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0001568/0.1535, allocations: 237.4 kB / 0.9561 GB, free: 14.69 MB / 0.9167 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0002513/0.1537, allocations: 320.5 kB / 0.9565 GB, free: 14.31 MB / 0.9167 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.538e-06/0.1537, allocations: 8 kB / 0.9565 GB, free: 14.3 MB / 0.9167 GB
Notification: Performance of matching and sorting (n=69) (initialization): time 0.0005075/0.1543, allocations: 0.5109 MB / 0.957 GB, free: 13.78 MB / 0.9167 GB
Notification: Performance of prepare postOptimizeDAE: time 1.352e-05/0.1543, allocations: 4 kB / 0.957 GB, free: 13.78 MB / 0.9167 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.232e-06/0.1543, allocations: 4 kB / 0.957 GB, free: 13.77 MB / 0.9167 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.0002334/0.1545, allocations: 106.4 kB / 0.9571 GB, free: 13.67 MB / 0.9167 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001888/0.1547, allocations: 95.89 kB / 0.9572 GB, free: 13.57 MB / 0.9167 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001744/0.1564, allocations: 2.553 MB / 0.9597 GB, free: 10.92 MB / 0.9167 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0001801/0.1566, allocations: 63.64 kB / 0.9597 GB, free: 10.86 MB / 0.9167 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.25e-05/0.1566, allocations: 16 kB / 0.9597 GB, free: 10.84 MB / 0.9167 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 16
 * Number of states: 0 ()
 * Number of discrete variables: 19 (assEqu.nFai,$PRE.assEqu.nFai,$whenCondition5,$PRE.intGai.nextTimeEvent,$whenCondition4,$PRE.reference.nextTimeEvent,$whenCondition3,$whenCondition1,reference.nextTimeEvent,reference.nextTimeEventScaled,$PRE.reference.nextTimeEventScaled,assEqu.satisfied,$PRE.assEqu.satisfied,mean.y_last,$PRE.mean.y_last,$whenCondition2,intGai.nextTimeEvent,intGai.nextTimeEventScaled,$PRE.intGai.nextTimeEventScaled)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (54):
 * Single equations (assignments): 53
 * 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): 1 system
   {(1,15,100.0%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 0 systems
Notification: Performance of prepare postOptimizeDAE: time 0.0001656/0.1568, allocations: 202.4 kB / 0.9599 GB, free: 10.63 MB / 0.9167 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 9.195e-05/0.1569, allocations: 135.2 kB / 0.9601 GB, free: 10.5 MB / 0.9167 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.000518/0.1574, allocations: 467.1 kB / 0.9605 GB, free: 10.03 MB / 0.9167 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.256e-06/0.1574, allocations: 4 kB / 0.9605 GB, free: 10.02 MB / 0.9167 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 3.386e-06/0.1574, allocations: 8 kB / 0.9605 GB, free: 10.02 MB / 0.9167 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.883e-06/0.1574, allocations: 3.984 kB / 0.9605 GB, free: 10.01 MB / 0.9167 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0009959/0.1584, allocations: 1.011 MB / 0.9615 GB, free: 8.957 MB / 0.9167 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.414e-06/0.1584, allocations: 0 / 0.9615 GB, free: 8.957 MB / 0.9167 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000122/0.1586, allocations: 51.91 kB / 0.9615 GB, free: 8.906 MB / 0.9167 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.0002177/0.1588, allocations: 123.3 kB / 0.9617 GB, free: 8.777 MB / 0.9167 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.279e-05/0.1588, allocations: 12 kB / 0.9617 GB, free: 8.766 MB / 0.9167 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.002467/0.1613, allocations: 4.525 MB / 0.9661 GB, free: 4.016 MB / 0.9167 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 8.41e-07/0.1613, allocations: 0 / 0.9661 GB, free: 4.016 MB / 0.9167 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0006288/0.1619, allocations: 0.6843 MB / 0.9668 GB, free: 3.305 MB / 0.9167 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0001332/0.162, allocations: 135.1 kB / 0.9669 GB, free: 3.168 MB / 0.9167 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 4.662e-05/0.1621, allocations: 16.17 kB / 0.9669 GB, free: 3.152 MB / 0.9167 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0001395/0.1622, allocations: 27.92 kB / 0.9669 GB, free: 3.125 MB / 0.9167 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 8.705e-05/0.1623, allocations: 67.81 kB / 0.967 GB, free: 3.059 MB / 0.9167 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.181e-05/0.1623, allocations: 4 kB / 0.967 GB, free: 3.055 MB / 0.9167 GB
Notification: Performance of sorting global known variables: time 0.0004645/0.1628, allocations: 0.722 MB / 0.9677 GB, free: 2.328 MB / 0.9167 GB
Notification: Performance of sort global known variables: time 9.1e-08/0.1628, allocations: 4 kB / 0.9677 GB, free: 2.324 MB / 0.9167 GB
Notification: Performance of remove unused functions: time 0.0004402/0.1632, allocations: 203.7 kB / 0.9679 GB, free: 2.125 MB / 0.9167 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 1
 * Number of states: 4 (mean.x,assEqu.diff,thermalZoneTwoElements.intWallRC.thermCapInt[1].T,thermalZoneTwoElements.extWallRC.thermCapExt[1].T)
 * Number of discrete variables: 12 ($whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,mean.y_last,assEqu.nFai,assEqu.satisfied,reference.nextTimeEventScaled,reference.nextTimeEvent,intGai.nextTimeEventScaled,intGai.nextTimeEvent)
 * Number of discrete states: 7 (intGai.nextTimeEvent,reference.nextTimeEvent,mean.x,assEqu.satisfied,assEqu.nFai,reference.nextTimeEventScaled,intGai.nextTimeEventScaled)
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (30):
 * Single equations (assignments): 22
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 6
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 2
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 2 systems
   {(2,12,100.0%), (1,3,100.0%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 0 systems
Notification: Performance of Backend phase and start with SimCode phase: time 0.0009594/0.1642, allocations: 454.6 kB / 0.9683 GB, free: 1.84 MB / 0.9167 GB
Notification: Performance of simCode: created initialization part: time 0.0005203/0.1647, allocations: 0.4904 MB / 0.9688 GB, free: 1.332 MB / 0.9167 GB
Notification: Performance of simCode: created event and clocks part: time 2.485e-06/0.1647, allocations: 0 / 0.9688 GB, free: 1.332 MB / 0.9167 GB
Notification: Performance of simCode: created simulation system equations: time 0.000371/0.1651, allocations: 0.5459 MB / 0.9694 GB, free: 0.7461 MB / 0.9167 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0005391/0.1656, allocations: 199 kB / 0.9695 GB, free: 0.5625 MB / 0.9167 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002085/0.1677, allocations: 1.843 MB / 0.9713 GB, free: 14.67 MB / 0.9323 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0002038/0.1679, allocations: 277.8 kB / 0.9716 GB, free: 14.38 MB / 0.9323 GB
Notification: Performance of simCode: alias equations: time 0.0001592/0.1681, allocations: 72.64 kB / 0.9717 GB, free: 14.31 MB / 0.9323 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002432/0.1683, allocations: 202.1 kB / 0.9719 GB, free: 14.11 MB / 0.9323 GB
Notification: Performance of SimCode: time 9.62e-07/0.1683, allocations: 0 / 0.9719 GB, free: 14.11 MB / 0.9323 GB
Notification: Performance of Templates: time 0.01468/0.183, allocations: 11.16 MB / 0.9828 GB, free: 3.176 MB / 0.9323 GB
"
[Timeout remaining time 300]
make -j1 -f Buildings_11_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3.makefile [Timeout 300]
(rm -f Buildings_11_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3.pipe ; mkfifo Buildings_11_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3.pipe ; head -c 1048576 < Buildings_11_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3.pipe >> ../files/Buildings_11_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3.sim & ./Buildings_11_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3 -abortSlowSimulation -alarm=240  -emit_protected -lv LOG_STATS > Buildings_11_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3.pipe 2>&1) [Timeout 240]
diffSimulationResults("Buildings_11_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_11.x/Buildings_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase3.csv","",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 300]
""
[Timeout remaining time 300]
Reference file matches
[Calling sys.exit(0), Time elapsed: 5.73653866071254]