Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.Validation.Reliefs.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 0.001795/0.001795, allocations: 109.2 kB / 18.94 MB, free: 2.949 MB / 14.72 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 0.002296/0.002296, allocations: 219.1 kB / 22.26 MB, free: 5.125 MB / 14.72 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 1.516/1.516, allocations: 230.6 MB / 256 MB, free: 7.992 MB / 206.1 MB " [Timeout remaining time 178] 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 3.361/3.361, allocations: 0.505 GB / 0.8101 GB, free: 22.04 MB / 0.6231 GB " [Timeout remaining time 176] Using package Buildings with version 13.0.0 (/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: "" <> buildModelFMU(Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.Validation.Reliefs,fileNamePrefix="Buildings_latest_Buildings_Controls_OBC_ASHRAE_G36_AHUs_MultiZone_VAV_Economizers_Subsequences_Modulations_Validation_Reliefs",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.Validation.Reliefs,fileNamePrefix="Buildings_latest_Buildings_Controls_OBC_ASHRAE_G36_AHUs_MultiZone_VAV_Economizers_Subsequences_Modulations_Validation_Reliefs",fmuType="me",version="2.0",platforms={"static"}) [Timeout 300] "Notification: Buildings requested package Modelica of version 4.0.0. Modelica 4.1.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.002708/0.002708, allocations: 69.58 kB / 1.177 GB, free: 17.2 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.4195/0.4222, allocations: 180.2 MB / 1.353 GB, free: 8.441 MB / 1.045 GB Notification: Performance of NFInst.instantiate(Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.Validation.Reliefs): time 0.003444/0.4257, allocations: 1.042 MB / 1.354 GB, free: 7.402 MB / 1.045 GB Notification: Performance of NFInst.instExpressions: time 0.001823/0.4275, allocations: 0.9484 MB / 1.355 GB, free: 6.441 MB / 1.045 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0001604/0.4277, allocations: 7.938 kB / 1.355 GB, free: 6.434 MB / 1.045 GB Notification: Performance of NFTyping.typeComponents: time 8.047e-05/0.4277, allocations: 15.8 kB / 1.355 GB, free: 6.418 MB / 1.045 GB Notification: Performance of NFTyping.typeBindings: time 0.0001674/0.4279, allocations: 35.72 kB / 1.355 GB, free: 6.383 MB / 1.045 GB Notification: Performance of NFTyping.typeClassSections: time 0.0002991/0.4282, allocations: 71.92 kB / 1.355 GB, free: 6.312 MB / 1.045 GB Notification: Performance of NFFlatten.flatten: time 0.0004247/0.4286, allocations: 192 kB / 1.355 GB, free: 6.125 MB / 1.045 GB Notification: Performance of NFFlatten.resolveConnections: time 0.000332/0.429, allocations: 69 kB / 1.355 GB, free: 6.051 MB / 1.045 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0001398/0.4291, allocations: 79.64 kB / 1.355 GB, free: 5.973 MB / 1.045 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0001396/0.4292, allocations: 75.62 kB / 1.355 GB, free: 5.898 MB / 1.045 GB Notification: Performance of NFPackage.collectConstants: time 5.142e-05/0.4293, allocations: 20 kB / 1.355 GB, free: 5.879 MB / 1.045 GB Notification: Performance of NFFlatten.collectFunctions: time 4.553e-05/0.4293, allocations: 20 kB / 1.355 GB, free: 5.859 MB / 1.045 GB Notification: Performance of NFScalarize.scalarize: time 6.708e-05/0.4294, allocations: 39.91 kB / 1.356 GB, free: 5.82 MB / 1.045 GB Notification: Performance of NFVerifyModel.verify: time 0.0001114/0.4295, allocations: 87.53 kB / 1.356 GB, free: 5.734 MB / 1.045 GB Notification: Performance of NFConvertDAE.convert: time 0.0004353/0.43, allocations: 271.1 kB / 1.356 GB, free: 5.469 MB / 1.045 GB Notification: Performance of FrontEnd - DAE generated: time 6.051e-06/0.43, allocations: 0 / 1.356 GB, free: 5.469 MB / 1.045 GB Notification: Performance of FrontEnd: time 2.084e-06/0.43, allocations: 0 / 1.356 GB, free: 5.469 MB / 1.045 GB Notification: Performance of Transformations before backend: time 1.188e-05/0.43, allocations: 0 / 1.356 GB, free: 5.469 MB / 1.045 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 40 * Number of variables: 40 Notification: Performance of Generate backend data structure: time 0.0009689/0.4309, allocations: 405.8 kB / 1.356 GB, free: 5.039 MB / 1.045 GB Notification: Performance of prepare preOptimizeDAE: time 5.6e-05/0.431, allocations: 12.03 kB / 1.356 GB, free: 5.027 MB / 1.045 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 7.421e-05/0.4311, allocations: 54.73 kB / 1.356 GB, free: 4.965 MB / 1.045 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 6.305e-05/0.4311, allocations: 16.84 kB / 1.356 GB, free: 4.949 MB / 1.045 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0006273/0.4318, allocations: 198.4 kB / 1.357 GB, free: 4.73 MB / 1.045 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.703e-05/0.4318, allocations: 16.7 kB / 1.357 GB, free: 4.715 MB / 1.045 GB Notification: Performance of preOpt expandDerOperator (simulation): time 3.939e-05/0.4318, allocations: 16.38 kB / 1.357 GB, free: 4.699 MB / 1.045 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0005201/0.4324, allocations: 160.8 kB / 1.357 GB, free: 4.539 MB / 1.045 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.663e-05/0.4324, allocations: 7.938 kB / 1.357 GB, free: 4.531 MB / 1.045 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.387e-05/0.4324, allocations: 7.938 kB / 1.357 GB, free: 4.523 MB / 1.045 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 9.288e-06/0.4324, allocations: 4 kB / 1.357 GB, free: 4.52 MB / 1.045 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0004838/0.4329, allocations: 139.8 kB / 1.357 GB, free: 4.383 MB / 1.045 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.001193/0.4341, allocations: 0.5108 MB / 1.357 GB, free: 3.828 MB / 1.045 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0003739/0.4345, allocations: 94.72 kB / 1.357 GB, free: 3.727 MB / 1.045 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0001701/0.4346, allocations: 36.78 kB / 1.357 GB, free: 3.688 MB / 1.045 GB Notification: Performance of preOpt evalFunc (simulation): time 3.424e-05/0.4347, allocations: 4 kB / 1.357 GB, free: 3.684 MB / 1.045 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.946e-05/0.4347, allocations: 38.55 kB / 1.358 GB, free: 3.637 MB / 1.045 GB Notification: Performance of pre-optimization done (n=9): time 1.603e-06/0.4347, allocations: 7.938 kB / 1.358 GB, free: 3.629 MB / 1.045 GB Notification: Performance of matching and sorting (n=9): time 0.000658/0.4354, allocations: 149.5 kB / 1.358 GB, free: 3.477 MB / 1.045 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.814e-05/0.4354, allocations: 51.41 kB / 1.358 GB, free: 3.414 MB / 1.045 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0002909/0.4357, allocations: 199.2 kB / 1.358 GB, free: 3.207 MB / 1.045 GB Notification: Performance of collectPreVariables (initialization): time 2.668e-05/0.4357, allocations: 25.7 kB / 1.358 GB, free: 3.176 MB / 1.045 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001464/0.4359, allocations: 148.3 kB / 1.358 GB, free: 3.027 MB / 1.045 GB Notification: Performance of collectInitialBindings (initialization): time 4.426e-05/0.4359, allocations: 35.73 kB / 1.358 GB, free: 2.992 MB / 1.045 GB Notification: Performance of simplifyInitialFunctions (initialization): time 8.592e-05/0.436, allocations: 33.66 kB / 1.358 GB, free: 2.953 MB / 1.045 GB Notification: Performance of setup shared object (initialization): time 0.0002033/0.4362, allocations: 326.8 kB / 1.358 GB, free: 2.625 MB / 1.045 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001706/0.4364, allocations: 31.98 kB / 1.358 GB, free: 2.594 MB / 1.045 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002168/0.4366, allocations: 80.19 kB / 1.359 GB, free: 2.5 MB / 1.045 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0003844/0.437, allocations: 124.1 kB / 1.359 GB, free: 2.363 MB / 1.045 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.725e-06/0.437, allocations: 0 / 1.359 GB, free: 2.363 MB / 1.045 GB Notification: Performance of matching and sorting (n=15) (initialization): time 0.0005062/0.4375, allocations: 161.4 kB / 1.359 GB, free: 2.199 MB / 1.045 GB Notification: Performance of prepare postOptimizeDAE: time 2.137e-05/0.4375, allocations: 4 kB / 1.359 GB, free: 2.195 MB / 1.045 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.572e-06/0.4375, allocations: 0 / 1.359 GB, free: 2.195 MB / 1.045 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.678e-05/0.4375, allocations: 4 kB / 1.359 GB, free: 2.191 MB / 1.045 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002308/0.4378, allocations: 35.91 kB / 1.359 GB, free: 2.156 MB / 1.045 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.558e-05/0.4378, allocations: 7.938 kB / 1.359 GB, free: 2.148 MB / 1.045 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002082/0.438, allocations: 19.89 kB / 1.359 GB, free: 2.129 MB / 1.045 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 1.903e-05/0.438, allocations: 4.125 kB / 1.359 GB, free: 2.125 MB / 1.045 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 5 * 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 (15): * Single equations (assignments): 15 * 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 0.0001769/0.4382, allocations: 138.4 kB / 1.359 GB, free: 1.98 MB / 1.045 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 7.126e-05/0.4382, allocations: 15.91 kB / 1.359 GB, free: 1.965 MB / 1.045 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0005179/0.4388, allocations: 143 kB / 1.359 GB, free: 1.816 MB / 1.045 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.382e-06/0.4388, allocations: 4 kB / 1.359 GB, free: 1.812 MB / 1.045 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.283e-06/0.4388, allocations: 3.938 kB / 1.359 GB, free: 1.809 MB / 1.045 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 8.356e-06/0.4388, allocations: 7.984 kB / 1.359 GB, free: 1.801 MB / 1.045 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.000922/0.4397, allocations: 435.5 kB / 1.36 GB, free: 1.32 MB / 1.045 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.464e-06/0.4397, allocations: 0 / 1.36 GB, free: 1.32 MB / 1.045 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001615/0.4399, allocations: 23.98 kB / 1.36 GB, free: 1.297 MB / 1.045 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.022e-05/0.4399, allocations: 7.938 kB / 1.36 GB, free: 1.289 MB / 1.045 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.203e-05/0.4399, allocations: 96 / 1.36 GB, free: 1.289 MB / 1.045 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 2.795e-06/0.4399, allocations: 4 kB / 1.36 GB, free: 1.285 MB / 1.045 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.713e-06/0.4399, allocations: 8 kB / 1.36 GB, free: 1.277 MB / 1.045 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0004945/0.4404, allocations: 237.1 kB / 1.36 GB, free: 1.023 MB / 1.045 GB Notification: Performance of postOpt removeConstants (simulation): time 5.111e-05/0.4404, allocations: 31.7 kB / 1.36 GB, free: 0.9922 MB / 1.045 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 3.303e-05/0.4405, allocations: 4 kB / 1.36 GB, free: 0.9883 MB / 1.045 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0002081/0.4407, allocations: 15.98 kB / 1.36 GB, free: 0.9727 MB / 1.045 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 5.912e-05/0.4407, allocations: 7.984 kB / 1.36 GB, free: 0.9648 MB / 1.045 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.946e-05/0.4408, allocations: 8 kB / 1.36 GB, free: 0.957 MB / 1.045 GB Notification: Performance of sorting global known variables: time 0.0001806/0.4409, allocations: 136.1 kB / 1.36 GB, free: 0.8242 MB / 1.045 GB Notification: Performance of sort global known variables: time 8e-08/0.4409, allocations: 0 / 1.36 GB, free: 0.8242 MB / 1.045 GB Notification: Performance of remove unused functions: time 0.0004854/0.4414, allocations: 24 kB / 1.36 GB, free: 0.8008 MB / 1.045 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * 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 simulation (11): * Single equations (assignments): 11 * 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 0.0009634/0.4424, allocations: 0.7869 MB / 1.361 GB, free: 15.98 MB / 1.061 GB Notification: Performance of simCode: created initialization part: time 0.0004346/0.4428, allocations: 103.8 kB / 1.361 GB, free: 15.88 MB / 1.061 GB Notification: Performance of simCode: created event and clocks part: time 2.966e-06/0.4428, allocations: 0 / 1.361 GB, free: 15.88 MB / 1.061 GB Notification: Performance of simCode: created simulation system equations: time 0.0001846/0.443, allocations: 51.91 kB / 1.361 GB, free: 15.83 MB / 1.061 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.000592/0.4436, allocations: 32.62 kB / 1.361 GB, free: 15.8 MB / 1.061 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003559/0.4472, allocations: 1.895 MB / 1.363 GB, free: 13.79 MB / 1.061 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005286/0.4477, allocations: 0.7318 MB / 1.364 GB, free: 13.04 MB / 1.061 GB Notification: Performance of simCode: alias equations: time 0.0001367/0.4478, allocations: 25.47 kB / 1.364 GB, free: 13.01 MB / 1.061 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001305/0.448, allocations: 47.42 kB / 1.364 GB, free: 12.96 MB / 1.061 GB Notification: Performance of SimCode: time 7.21e-07/0.448, allocations: 0 / 1.364 GB, free: 12.96 MB / 1.061 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.04266/0.4906, allocations: 3.405 MB / 1.367 GB, free: 9.75 MB / 1.061 GB Notification: Performance of buildModelFMU: Generate platform static: time 11.25/11.74, allocations: 14.75 kB / 1.367 GB, free: 9.738 MB / 1.061 GB " [Timeout remaining time 288] (rm -f Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.Validation.Reliefs.pipe ; mkfifo Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.Validation.Reliefs.pipe ; head -c 1048576 < Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.Validation.Reliefs.pipe >> ../files/Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.Validation.Reliefs.sim & python3 -m fmpy simulate --output-file Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.Validation.Reliefs_res.csv --start-time 0 --stop-time 1800 --timeout 800 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.72 Buildings_latest_Buildings_Controls_OBC_ASHRAE_G36_AHUs_MultiZone_VAV_Economizers_Subsequences_Modulations_Validation_Reliefs.fmu > Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.Validation.Reliefs.pipe 2>&1) [Timeout 840.0] diffSimulationResults("Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.Validation.Reliefs_res.csv","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Controls_OBC_ASHRAE_G36_AHUs_MultiZone_VAV_Economizers_Subsequences_Modulations_Validation_Reliefs.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.Validation.Reliefs.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 300] "Error: Could not read variable mod1.yRetDam in file Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.Validation.Reliefs_res.csv. Warning: Get data of variable mod1.yRetDam from file Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.Validation.Reliefs_res.csv failed! Error: Could not read variable mod1.uTSup in file Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.Validation.Reliefs_res.csv. Warning: Get data of variable mod1.uTSup from file Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.Validation.Reliefs_res.csv failed! " [Timeout remaining time 300] Reference file matches [Calling sys.exit(0), Time elapsed: 18.995865385999878]