Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Generic.PlantEnable.Validation.EnableDevices.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 0.001039/0.001039, allocations: 92.2 kB / 20.19 MB, free: 4.359 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 0.001053/0.001053, allocations: 173 kB / 23.49 MB, free: 1.059 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 1.075/1.075, allocations: 177.1 MB / 203.8 MB, free: 5.609 MB / 186.7 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings master/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings master/package.mo): time 2.176/2.176, allocations: 429.5 MB / 0.6736 GB, free: 4.043 MB / 0.6355 GB " [Timeout remaining time 177] Using package Buildings with version 14.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 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(Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Generic.PlantEnable.Validation.EnableDevices,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|enaDev.uPla|enaDev.uChiWatPum.[0-9,]+.|enaDev.uConWatPum.[0-9,]+.|enaDev.uIni|enaDev.uChiSta|enaDev.yEnaPlaPro|enaDev.yChiWatIsoVal|enaDev.yConWatIsoVal|enaDev.yLeaPriChiPum|enaDev.yLeaConPum|enaDev.yLeaChi",fileNamePrefix="Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Generic.PlantEnable.Validation.EnableDevices") translateModel(Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Generic.PlantEnable.Validation.EnableDevices,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|enaDev.uPla|enaDev.uChiWatPum.[0-9,]+.|enaDev.uConWatPum.[0-9,]+.|enaDev.uIni|enaDev.uChiSta|enaDev.yEnaPlaPro|enaDev.yChiWatIsoVal|enaDev.yConWatIsoVal|enaDev.yLeaPriChiPum|enaDev.yLeaConPum|enaDev.yLeaChi",fileNamePrefix="Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Generic.PlantEnable.Validation.EnableDevices") [Timeout 300] "Notification: Performance of FrontEnd - loaded program: time 1.824e-06/1.824e-06, allocations: 0 / 0.8783 GB, free: 6.539 MB / 0.8386 GB Notification: Performance of FrontEnd - Absyn->SCode: time 2.745e-05/2.928e-05, allocations: 3.656 kB / 0.8783 GB, free: 6.535 MB / 0.8386 GB Notification: Performance of NFInst.instantiate(Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Generic.PlantEnable.Validation.EnableDevices): time 0.001817/0.001846, allocations: 1.037 MB / 0.8793 GB, free: 5.516 MB / 0.8386 GB Notification: Performance of NFInst.instExpressions: time 0.001575/0.003421, allocations: 1.454 MB / 0.8807 GB, free: 4.051 MB / 0.8386 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0001143/0.003536, allocations: 0.8125 kB / 0.8807 GB, free: 4.051 MB / 0.8386 GB Notification: Performance of NFTyping.typeComponents: time 0.0001641/0.0037, allocations: 37.95 kB / 0.8807 GB, free: 4.016 MB / 0.8386 GB Notification: Performance of NFTyping.typeBindings: time 4.605e-05/0.003746, allocations: 28.83 kB / 0.8808 GB, free: 3.988 MB / 0.8386 GB Notification: Performance of NFTyping.typeClassSections: time 0.0007899/0.004536, allocations: 369.6 kB / 0.8811 GB, free: 3.629 MB / 0.8386 GB Notification: Performance of NFFlatten.flatten: time 0.0004266/0.004962, allocations: 425.6 kB / 0.8815 GB, free: 3.215 MB / 0.8386 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0002433/0.005206, allocations: 110.2 kB / 0.8816 GB, free: 3.105 MB / 0.8386 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0002176/0.005423, allocations: 239.7 kB / 0.8818 GB, free: 2.871 MB / 0.8386 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0001563/0.005579, allocations: 127.6 kB / 0.882 GB, free: 2.746 MB / 0.8386 GB Notification: Performance of NFPackage.collectConstants: time 5.068e-05/0.00563, allocations: 41.19 kB / 0.882 GB, free: 2.707 MB / 0.8386 GB Notification: Performance of NFFlatten.collectFunctions: time 8.408e-05/0.005714, allocations: 55.98 kB / 0.8821 GB, free: 2.652 MB / 0.8386 GB Notification: Performance of NFScalarize.scalarize: time 6.282e-05/0.005777, allocations: 59.83 kB / 0.8821 GB, free: 2.594 MB / 0.8386 GB Notification: Performance of NFVerifyModel.verify: time 0.0001116/0.005889, allocations: 127.7 kB / 0.8822 GB, free: 2.469 MB / 0.8386 GB Notification: Performance of NFConvertDAE.convert: time 0.0003566/0.006245, allocations: 320.1 kB / 0.8825 GB, free: 2.156 MB / 0.8386 GB Notification: Performance of FrontEnd - DAE generated: time 2.695e-06/0.006248, allocations: 0 / 0.8825 GB, free: 2.156 MB / 0.8386 GB Notification: Performance of FrontEnd: time 1.062e-06/0.006249, allocations: 3.938 kB / 0.8826 GB, free: 2.152 MB / 0.8386 GB Notification: Performance of Transformations before backend: time 6.111e-06/0.006255, allocations: 0.6562 kB / 0.8826 GB, free: 2.152 MB / 0.8386 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 59 * Number of variables: 59 Notification: Performance of Generate backend data structure: time 0.0009434/0.007198, allocations: 0.6546 MB / 0.8832 GB, free: 1.441 MB / 0.8386 GB Notification: Performance of prepare preOptimizeDAE: time 4.028e-05/0.007239, allocations: 11.97 kB / 0.8832 GB, free: 1.43 MB / 0.8386 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 9.659e-05/0.007335, allocations: 56.73 kB / 0.8833 GB, free: 1.379 MB / 0.8386 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0004569/0.007792, allocations: 239.9 kB / 0.8835 GB, free: 1.117 MB / 0.8386 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.477e-05/0.007827, allocations: 24.88 kB / 0.8835 GB, free: 1.094 MB / 0.8386 GB Notification: Performance of preOpt expandDerOperator (simulation): time 4.257e-05/0.00787, allocations: 36.36 kB / 0.8835 GB, free: 1.059 MB / 0.8386 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0002388/0.008108, allocations: 177.3 kB / 0.8837 GB, free: 0.8789 MB / 0.8386 GB Notification: Performance of preOpt findStateOrder (simulation): time 9.748e-06/0.008118, allocations: 192 / 0.8837 GB, free: 0.8789 MB / 0.8386 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 1.922e-05/0.008137, allocations: 8.359 kB / 0.8837 GB, free: 0.8711 MB / 0.8386 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.265e-05/0.00815, allocations: 12.12 kB / 0.8837 GB, free: 0.8594 MB / 0.8386 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0001252/0.008275, allocations: 80.39 kB / 0.8838 GB, free: 0.7852 MB / 0.8386 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0008264/0.009102, allocations: 0.8084 MB / 0.8846 GB, free: 15.91 MB / 0.8542 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0001927/0.009294, allocations: 71.09 kB / 0.8847 GB, free: 15.82 MB / 0.8542 GB Notification: Performance of preOpt resolveLoops (simulation): time 3.214e-05/0.009326, allocations: 20.77 kB / 0.8847 GB, free: 15.8 MB / 0.8542 GB Notification: Performance of preOpt evalFunc (simulation): time 8.977e-06/0.009335, allocations: 4 kB / 0.8847 GB, free: 15.8 MB / 0.8542 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0001463/0.009482, allocations: 120.9 kB / 0.8848 GB, free: 15.67 MB / 0.8542 GB Notification: Performance of pre-optimization done (n=16): time 1.934e-06/0.009484, allocations: 0 / 0.8848 GB, free: 15.67 MB / 0.8542 GB Notification: Performance of matching and sorting (n=16): time 0.0002849/0.009769, allocations: 174.6 kB / 0.885 GB, free: 15.49 MB / 0.8542 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.716e-05/0.009806, allocations: 55.41 kB / 0.885 GB, free: 15.43 MB / 0.8542 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0001515/0.009957, allocations: 251.9 kB / 0.8853 GB, free: 15.16 MB / 0.8542 GB Notification: Performance of collectPreVariables (initialization): time 3.049e-05/0.009988, allocations: 36.58 kB / 0.8853 GB, free: 15.12 MB / 0.8542 GB Notification: Performance of collectInitialEqns (initialization): time 9.771e-05/0.01009, allocations: 215.5 kB / 0.8855 GB, free: 14.91 MB / 0.8542 GB Notification: Performance of collectInitialBindings (initialization): time 2.346e-05/0.01011, allocations: 35.78 kB / 0.8855 GB, free: 14.88 MB / 0.8542 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000112/0.01022, allocations: 111.3 kB / 0.8856 GB, free: 14.76 MB / 0.8542 GB Notification: Performance of setup shared object (initialization): time 0.0001229/0.01034, allocations: 0.5039 MB / 0.8861 GB, free: 14.24 MB / 0.8542 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001697/0.01051, allocations: 173 kB / 0.8863 GB, free: 14.05 MB / 0.8542 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002105/0.01072, allocations: 301.1 kB / 0.8866 GB, free: 13.69 MB / 0.8542 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0002443/0.01097, allocations: 303.5 kB / 0.8869 GB, free: 13.33 MB / 0.8542 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.078e-06/0.01097, allocations: 4 kB / 0.8869 GB, free: 13.33 MB / 0.8542 GB Notification: Performance of matching and sorting (n=31) (initialization): time 0.0004834/0.01146, allocations: 0.5164 MB / 0.8874 GB, free: 12.77 MB / 0.8542 GB Notification: Performance of prepare postOptimizeDAE: time 5.602e-05/0.01151, allocations: 97.09 kB / 0.8875 GB, free: 12.66 MB / 0.8542 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.462e-06/0.01152, allocations: 0 / 0.8875 GB, free: 12.66 MB / 0.8542 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.643e-05/0.01153, allocations: 4 kB / 0.8875 GB, free: 12.66 MB / 0.8542 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 4.33e-05/0.01158, allocations: 20.27 kB / 0.8875 GB, free: 12.64 MB / 0.8542 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.165e-05/0.01159, allocations: 8 kB / 0.8875 GB, free: 12.63 MB / 0.8542 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002055/0.01179, allocations: 67.83 kB / 0.8876 GB, free: 12.56 MB / 0.8542 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.692e-05/0.01182, allocations: 23.98 kB / 0.8876 GB, free: 12.54 MB / 0.8542 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 12 * Number of states: 0 () * Number of discrete variables: 25 ($whenCondition5,$whenCondition6,$whenCondition3,$whenCondition4,$whenCondition1,$whenCondition2,booPul2.y,$PRE.booPul2.y,intSwi.y,booPul1.y,$PRE.booPul1.y,booPul.y,$PRE.booPul.y,enaDev.enaPro.y,$PRE.enaDev.enaPro.y,enaDev.enaPro.clr,enaDev.enaPro.u,enaDev.yLeaChi,$whenCondition7,$whenCondition8,conInt1.y,con.y,conInt.y,enaDev.conInt.y,enaDev.intChiMod.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (25): * Single equations (assignments): 22 * Array equations: 0 * Algorithm blocks: 3 * 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 0.0001161/0.01194, allocations: 188.4 kB / 0.8878 GB, free: 12.34 MB / 0.8542 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 2.308e-05/0.01196, allocations: 27.88 kB / 0.8878 GB, free: 12.32 MB / 0.8542 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 3.415e-05/0.012, allocations: 17.81 kB / 0.8878 GB, free: 12.3 MB / 0.8542 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.317e-06/0.012, allocations: 4 kB / 0.8878 GB, free: 12.3 MB / 0.8542 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.968e-06/0.012, allocations: 0 / 0.8878 GB, free: 12.3 MB / 0.8542 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.128e-06/0.01201, allocations: 0 / 0.8878 GB, free: 12.3 MB / 0.8542 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0003931/0.0124, allocations: 469.4 kB / 0.8883 GB, free: 11.8 MB / 0.8542 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.853e-06/0.0124, allocations: 0 / 0.8883 GB, free: 11.8 MB / 0.8542 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 1.751e-05/0.01242, allocations: 11.98 kB / 0.8883 GB, free: 11.79 MB / 0.8542 GB Notification: Performance of postOpt tearingSystem (simulation): time 2.635e-06/0.01242, allocations: 0 / 0.8883 GB, free: 11.79 MB / 0.8542 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 9.528e-06/0.01243, allocations: 7.938 kB / 0.8883 GB, free: 11.78 MB / 0.8542 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.513e-06/0.01243, allocations: 4 kB / 0.8883 GB, free: 11.77 MB / 0.8542 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.393e-06/0.01243, allocations: 0 / 0.8883 GB, free: 11.77 MB / 0.8542 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0001897/0.01262, allocations: 303.3 kB / 0.8886 GB, free: 11.46 MB / 0.8542 GB Notification: Performance of postOpt removeConstants (simulation): time 1.28e-05/0.01264, allocations: 11.91 kB / 0.8886 GB, free: 11.45 MB / 0.8542 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 1.641e-05/0.01265, allocations: 4 kB / 0.8886 GB, free: 11.45 MB / 0.8542 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 3.492e-05/0.01269, allocations: 0 / 0.8886 GB, free: 11.45 MB / 0.8542 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 4.653e-05/0.01273, allocations: 19.97 kB / 0.8886 GB, free: 11.43 MB / 0.8542 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.405e-05/0.01275, allocations: 7.938 kB / 0.8886 GB, free: 11.42 MB / 0.8542 GB Notification: Performance of sorting global known variables: time 6.379e-05/0.01281, allocations: 160.2 kB / 0.8888 GB, free: 11.26 MB / 0.8542 GB Notification: Performance of sort global known variables: time 5e-08/0.01281, allocations: 0 / 0.8888 GB, free: 11.26 MB / 0.8542 GB Notification: Performance of remove unused functions: time 0.0002408/0.01305, allocations: 71.78 kB / 0.8888 GB, free: 11.19 MB / 0.8542 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 16 (enaDev.enaPro.clr,enaDev.enaPro.u,$whenCondition8,$whenCondition7,$whenCondition5,$whenCondition6,$whenCondition3,$whenCondition4,$whenCondition1,$whenCondition2,enaDev.yLeaChi,enaDev.enaPro.y,booPul.y,booPul1.y,intSwi.y,booPul2.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (16): * Single equations (assignments): 12 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 4 * 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 0.0001408/0.01319, allocations: 115.2 kB / 0.889 GB, free: 11.07 MB / 0.8542 GB Notification: Performance of simCode: created initialization part: time 0.0003703/0.01356, allocations: 442.7 kB / 0.8894 GB, free: 10.57 MB / 0.8542 GB Notification: Performance of simCode: created event and clocks part: time 2.214e-06/0.01357, allocations: 0 / 0.8894 GB, free: 10.57 MB / 0.8542 GB Notification: Performance of simCode: created simulation system equations: time 5.889e-05/0.01363, allocations: 51.59 kB / 0.8894 GB, free: 10.52 MB / 0.8542 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0002565/0.01388, allocations: 44.59 kB / 0.8895 GB, free: 10.48 MB / 0.8542 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0007852/0.01467, allocations: 367.4 kB / 0.8898 GB, free: 10.08 MB / 0.8542 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 5.218e-05/0.01472, allocations: 87.77 kB / 0.8899 GB, free: 9.977 MB / 0.8542 GB Notification: Performance of simCode: alias equations: time 4.949e-05/0.01477, allocations: 17.64 kB / 0.8899 GB, free: 9.961 MB / 0.8542 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 2.874e-05/0.0148, allocations: 16.5 kB / 0.8899 GB, free: 9.945 MB / 0.8542 GB Notification: Performance of SimCode: time 1.012e-06/0.0148, allocations: 4 kB / 0.8899 GB, free: 9.941 MB / 0.8542 GB Notification: Performance of Templates: time 0.005545/0.02034, allocations: 3.241 MB / 0.8931 GB, free: 6.816 MB / 0.8542 GB " [Timeout remaining time 300] make -j1 -f Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Generic.PlantEnable.Validation.EnableDevices.makefile [Timeout 300] (rm -f Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Generic.PlantEnable.Validation.EnableDevices.pipe ; mkfifo Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Generic.PlantEnable.Validation.EnableDevices.pipe ; head -c 1048576 < Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Generic.PlantEnable.Validation.EnableDevices.pipe >> ../files/Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Generic.PlantEnable.Validation.EnableDevices.sim & ./Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Generic.PlantEnable.Validation.EnableDevices -abortSlowSimulation -alarm=240 -emit_protected -lv LOG_STATS > Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Generic.PlantEnable.Validation.EnableDevices.pipe 2>&1) [Timeout 240] diffSimulationResults("Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Generic.PlantEnable.Validation.EnableDevices_res.mat","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Controls_OBC_ASHRAE_G36_Plants_Chillers_Generic_PlantEnable_Validation_EnableDevices.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: 5.625534391030669]