Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_12_Buildings.Fluid.Actuators.Dampers.Examples.MixingBox.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 0.0008226/0.0008226, allocations: 72.5 kB / 19.93 MB, free: 4.633 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 0.0008062/0.0008062, allocations: 178.2 kB / 23.22 MB, free: 1.348 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 0.8907/0.8907, allocations: 177.1 MB / 203.5 MB, free: 5.738 MB / 186.7 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.2-maint.12.x/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.2-maint.12.x/package.mo): time 1.733/1.733, allocations: 377.8 MB / 0.6228 GB, free: 8.668 MB / 0.5886 GB " [Timeout remaining time 178] Using package Buildings with version 12.1.2 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.2-maint.12.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.Fluid.Actuators.Dampers.Examples.MixingBox,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|mixBox.damOA.m_flow|mixBox.damExh.m_flow|mixBox.damRec.m_flow",fileNamePrefix="Buildings_12_Buildings.Fluid.Actuators.Dampers.Examples.MixingBox") translateModel(Buildings.Fluid.Actuators.Dampers.Examples.MixingBox,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|mixBox.damOA.m_flow|mixBox.damExh.m_flow|mixBox.damRec.m_flow",fileNamePrefix="Buildings_12_Buildings.Fluid.Actuators.Dampers.Examples.MixingBox") [Timeout 300] "Notification: Performance of FrontEnd - loaded program: time 1.232e-06/1.232e-06, allocations: 0 / 0.9822 GB, free: 2.082 MB / 0.9323 GB Notification: Performance of FrontEnd - Absyn->SCode: time 1.795e-05/1.919e-05, allocations: 5.234 kB / 0.9822 GB, free: 2.078 MB / 0.9323 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Actuators.Dampers.Examples.MixingBox): time 0.6254/0.6254, allocations: 167.5 MB / 1.146 GB, free: 32 kB / 0.9948 GB Notification: Performance of NFInst.instExpressions: time 0.005689/0.6311, allocations: 4.01 MB / 1.15 GB, free: 13.3 MB / 1.01 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0005253/0.6317, allocations: 40.47 kB / 1.15 GB, free: 13.28 MB / 1.01 GB Notification: Performance of NFTyping.typeComponents: time 0.001074/0.6327, allocations: 0.4929 MB / 1.15 GB, free: 12.97 MB / 1.01 GB Notification: Performance of NFTyping.typeBindings: time 0.002592/0.6353, allocations: 1.623 MB / 1.152 GB, free: 12.06 MB / 1.01 GB Notification: Performance of NFTyping.typeClassSections: time 0.002723/0.6381, allocations: 1.425 MB / 1.153 GB, free: 11.34 MB / 1.01 GB Notification: Performance of NFFlatten.flatten: time 0.002158/0.6402, allocations: 2.23 MB / 1.155 GB, free: 10.26 MB / 1.01 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0009897/0.6412, allocations: 0.8969 MB / 1.156 GB, free: 9.836 MB / 1.01 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001798/0.643, allocations: 1.516 MB / 1.158 GB, free: 9.133 MB / 1.01 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0008351/0.6438, allocations: 0.7478 MB / 1.158 GB, free: 8.875 MB / 1.01 GB Notification: Performance of NFPackage.collectConstants: time 0.0001611/0.644, allocations: 139 kB / 1.159 GB, free: 8.875 MB / 1.01 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001644/0.6456, allocations: 1.056 MB / 1.16 GB, free: 8.539 MB / 1.01 GB Notification: Performance of NFScalarize.scalarize: time 0.0003721/0.646, allocations: 441.4 kB / 1.16 GB, free: 8.289 MB / 1.01 GB Notification: Performance of NFVerifyModel.verify: time 0.000422/0.6464, allocations: 454.3 kB / 1.16 GB, free: 8.074 MB / 1.01 GB Notification: Performance of NFConvertDAE.convert: time 0.002118/0.6486, allocations: 2.022 MB / 1.162 GB, free: 7.344 MB / 1.01 GB Notification: Performance of FrontEnd - DAE generated: time 5.01e-06/0.6486, allocations: 0 / 1.162 GB, free: 7.344 MB / 1.01 GB Notification: Performance of FrontEnd: time 1.884e-06/0.6486, allocations: 1.25 kB / 1.162 GB, free: 7.344 MB / 1.01 GB Notification: Performance of Transformations before backend: time 1.154e-05/0.6486, allocations: 2.344 kB / 1.162 GB, free: 7.344 MB / 1.01 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 116 * Number of variables: 116 Notification: Performance of Generate backend data structure: time 0.002435/0.651, allocations: 1.601 MB / 1.164 GB, free: 6.375 MB / 1.01 GB Notification: Performance of prepare preOptimizeDAE: time 3.825e-05/0.651, allocations: 9.344 kB / 1.164 GB, free: 6.375 MB / 1.01 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001009/0.6521, allocations: 303.3 kB / 1.164 GB, free: 6.297 MB / 1.01 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001359/0.6534, allocations: 0.9916 MB / 1.165 GB, free: 5.715 MB / 1.01 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.932e-05/0.6534, allocations: 46.72 kB / 1.165 GB, free: 5.695 MB / 1.01 GB Notification: Performance of preOpt expandDerOperator (simulation): time 8.826e-05/0.6535, allocations: 59.69 kB / 1.165 GB, free: 5.676 MB / 1.01 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0009376/0.6545, allocations: 0.6962 MB / 1.166 GB, free: 5.363 MB / 1.01 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.623e-05/0.6545, allocations: 9.156 kB / 1.166 GB, free: 5.355 MB / 1.01 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.267e-05/0.6545, allocations: 19.94 kB / 1.166 GB, free: 5.34 MB / 1.01 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.277e-05/0.6545, allocations: 15.42 kB / 1.166 GB, free: 5.336 MB / 1.01 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0009163/0.6555, allocations: 0.6336 MB / 1.167 GB, free: 5.133 MB / 1.01 GB Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts. Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002651/0.6581, allocations: 1.838 MB / 1.168 GB, free: 4.25 MB / 1.01 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0007345/0.6588, allocations: 0.5147 MB / 1.169 GB, free: 4.062 MB / 1.01 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0004128/0.6593, allocations: 334.1 kB / 1.169 GB, free: 3.957 MB / 1.01 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0001916/0.6595, allocations: 69.59 kB / 1.169 GB, free: 3.941 MB / 1.01 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.501e-05/0.6595, allocations: 38.34 kB / 1.169 GB, free: 3.898 MB / 1.01 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.0004643/0.6599, allocations: 175 kB / 1.17 GB, free: 3.855 MB / 1.01 GB Notification: Performance of pre-optimization done (n=41): time 2.886e-06/0.6599, allocations: 0 / 1.17 GB, free: 3.855 MB / 1.01 GB Notification: Performance of matching and sorting (n=41): time 0.001602/0.6615, allocations: 1.01 MB / 1.171 GB, free: 3.508 MB / 1.01 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.243e-05/0.6616, allocations: 60.58 kB / 1.171 GB, free: 3.441 MB / 1.01 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001402/0.663, allocations: 1.137 MB / 1.172 GB, free: 2.957 MB / 1.01 GB Notification: Performance of collectPreVariables (initialization): time 4.968e-05/0.663, allocations: 41.11 kB / 1.172 GB, free: 2.918 MB / 1.01 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002516/0.6633, allocations: 430.6 kB / 1.172 GB, free: 2.582 MB / 1.01 GB Notification: Performance of collectInitialBindings (initialization): time 9.953e-05/0.6634, allocations: 148 kB / 1.172 GB, free: 2.461 MB / 1.01 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001462/0.6635, allocations: 113.2 kB / 1.172 GB, free: 2.418 MB / 1.01 GB Notification: Performance of setup shared object (initialization): time 7.817e-05/0.6636, allocations: 323.6 kB / 1.173 GB, free: 2.105 MB / 1.01 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003734/0.664, allocations: 279 kB / 1.173 GB, free: 2.008 MB / 1.01 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0006938/0.6647, allocations: 1.148 MB / 1.174 GB, free: 0.8633 MB / 1.01 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0007945/0.6655, allocations: 0.5834 MB / 1.175 GB, free: 0.6484 MB / 1.01 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.266e-06/0.6655, allocations: 0 / 1.175 GB, free: 0.6484 MB / 1.01 GB Notification: Performance of matching and sorting (n=42) (initialization): time 0.0009986/0.6665, allocations: 0.7263 MB / 1.175 GB, free: 384 kB / 1.01 GB Notification: Performance of prepare postOptimizeDAE: time 1.743e-05/0.6665, allocations: 5.5 kB / 1.175 GB, free: 384 kB / 1.01 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.22e-06/0.6665, allocations: 0 / 1.175 GB, free: 384 kB / 1.01 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.544e-05/0.6665, allocations: 2.375 kB / 1.175 GB, free: 384 kB / 1.01 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003363/0.6668, allocations: 111.1 kB / 1.176 GB, free: 376 kB / 1.01 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 7.634e-06/0.6669, allocations: 6.625 kB / 1.176 GB, free: 372 kB / 1.01 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005376/0.6674, allocations: 94.27 kB / 1.176 GB, free: 360 kB / 1.01 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.814e-05/0.6674, allocations: 25 kB / 1.176 GB, free: 356 kB / 1.01 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0005405/0.668, allocations: 459.4 kB / 1.176 GB, free: 136 kB / 1.01 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0007029/0.6687, allocations: 1.152 MB / 1.177 GB, free: 14.98 MB / 1.026 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0007591/0.6694, allocations: 0.5801 MB / 1.178 GB, free: 14.76 MB / 1.026 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.573e-06/0.6694, allocations: 1.469 kB / 1.178 GB, free: 14.76 MB / 1.026 GB Notification: Performance of matching and sorting (n=42) (initialization_lambda0): time 0.0009739/0.6704, allocations: 0.7067 MB / 1.178 GB, free: 14.5 MB / 1.026 GB Notification: Performance of prepare postOptimizeDAE: time 9.919e-06/0.6704, allocations: 5.594 kB / 1.178 GB, free: 14.5 MB / 1.026 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.307e-06/0.6704, allocations: 2.656 kB / 1.178 GB, free: 14.5 MB / 1.026 GB Notification: Performance of postOpt tearingSystem (initialization): time 4.979e-06/0.6704, allocations: 2.219 kB / 1.178 GB, free: 14.5 MB / 1.026 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002844/0.6707, allocations: 107.7 kB / 1.179 GB, free: 14.5 MB / 1.026 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 3.537e-06/0.6707, allocations: 10.31 kB / 1.179 GB, free: 14.49 MB / 1.026 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005929/0.6713, allocations: 130.5 kB / 1.179 GB, free: 14.47 MB / 1.026 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.016e-05/0.6714, allocations: 29.11 kB / 1.179 GB, free: 14.46 MB / 1.026 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 1 * 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 (42): * Single equations (assignments): 42 * 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 0.0001339/0.6715, allocations: 206.6 kB / 1.179 GB, free: 14.27 MB / 1.026 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000132/0.6716, allocations: 93.39 kB / 1.179 GB, free: 14.21 MB / 1.026 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001099/0.6727, allocations: 0.7941 MB / 1.18 GB, free: 13.92 MB / 1.026 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.853e-06/0.6727, allocations: 5.375 kB / 1.18 GB, free: 13.92 MB / 1.026 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.37e-06/0.6727, allocations: 3.938 kB / 1.18 GB, free: 13.91 MB / 1.026 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.382e-06/0.6727, allocations: 6.562 kB / 1.18 GB, free: 13.91 MB / 1.026 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002018/0.6748, allocations: 1.645 MB / 1.181 GB, free: 13.11 MB / 1.026 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.677e-06/0.6748, allocations: 2.094 kB / 1.181 GB, free: 13.11 MB / 1.026 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000301/0.6751, allocations: 107.5 kB / 1.182 GB, free: 13.1 MB / 1.026 GB Notification: Performance of postOpt tearingSystem (simulation): time 5.951e-06/0.6751, allocations: 4.531 kB / 1.182 GB, free: 13.1 MB / 1.026 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.579e-05/0.6751, allocations: 18.09 kB / 1.182 GB, free: 13.09 MB / 1.026 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 5.6e-06/0.6751, allocations: 6.25 kB / 1.182 GB, free: 13.09 MB / 1.026 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.585e-06/0.6751, allocations: 2.969 kB / 1.182 GB, free: 13.09 MB / 1.026 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001445/0.6765, allocations: 1.223 MB / 1.183 GB, free: 12.5 MB / 1.026 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002931/0.6768, allocations: 197.3 kB / 1.183 GB, free: 12.39 MB / 1.026 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 8.537e-05/0.6769, allocations: 12.41 kB / 1.183 GB, free: 12.38 MB / 1.026 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0004382/0.6774, allocations: 67.47 kB / 1.183 GB, free: 12.37 MB / 1.026 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 8.309e-05/0.6774, allocations: 46.19 kB / 1.183 GB, free: 12.36 MB / 1.026 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.679e-05/0.6775, allocations: 19.91 kB / 1.183 GB, free: 12.35 MB / 1.026 GB Notification: Performance of sorting global known variables: time 0.0008428/0.6783, allocations: 0.8217 MB / 1.184 GB, free: 12 MB / 1.026 GB Notification: Performance of sort global known variables: time 1.7e-07/0.6783, allocations: 0 / 1.184 GB, free: 12 MB / 1.026 GB Notification: Performance of remove unused functions: time 0.0008871/0.6792, allocations: 417.2 kB / 1.184 GB, free: 11.92 MB / 1.026 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 10 * Number of states: 1 (mixBox.actPos.y) * 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 (50): * Single equations (assignments): 50 * 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 0.0003234/0.6795, allocations: 208.4 kB / 1.184 GB, free: 11.79 MB / 1.026 GB Notification: Performance of simCode: created initialization part: time 0.001273/0.6808, allocations: 0.8961 MB / 1.185 GB, free: 11.53 MB / 1.026 GB Notification: Performance of simCode: created event and clocks part: time 3.677e-06/0.6808, allocations: 1.094 kB / 1.185 GB, free: 11.53 MB / 1.026 GB Notification: Performance of simCode: created simulation system equations: time 0.000449/0.6813, allocations: 319.9 kB / 1.186 GB, free: 11.44 MB / 1.026 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001125/0.6824, allocations: 374.1 kB / 1.186 GB, free: 11.33 MB / 1.026 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001869/0.6842, allocations: 1.633 MB / 1.188 GB, free: 10.41 MB / 1.026 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0002961/0.6845, allocations: 436.8 kB / 1.188 GB, free: 10.27 MB / 1.026 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002619/0.6848, allocations: 93.62 kB / 1.188 GB, free: 10.26 MB / 1.026 GB Notification: Performance of SimCode: time 8.61e-07/0.6848, allocations: 0 / 1.188 GB, free: 10.26 MB / 1.026 GB Notification: Performance of Templates: time 0.01311/0.6979, allocations: 15.86 MB / 1.204 GB, free: 2.801 MB / 1.026 GB " [Timeout remaining time 299] make -j1 -f Buildings_12_Buildings.Fluid.Actuators.Dampers.Examples.MixingBox.makefile [Timeout 300] (rm -f Buildings_12_Buildings.Fluid.Actuators.Dampers.Examples.MixingBox.pipe ; mkfifo Buildings_12_Buildings.Fluid.Actuators.Dampers.Examples.MixingBox.pipe ; head -c 1048576 < Buildings_12_Buildings.Fluid.Actuators.Dampers.Examples.MixingBox.pipe >> ../files/Buildings_12_Buildings.Fluid.Actuators.Dampers.Examples.MixingBox.sim & ./Buildings_12_Buildings.Fluid.Actuators.Dampers.Examples.MixingBox -abortSlowSimulation -alarm=400 -emit_protected -lv LOG_STATS > Buildings_12_Buildings.Fluid.Actuators.Dampers.Examples.MixingBox.pipe 2>&1) [Timeout 400] diffSimulationResults("Buildings_12_Buildings.Fluid.Actuators.Dampers.Examples.MixingBox_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_12.x/Buildings_Fluid_Actuators_Dampers_Examples_MixingBox.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_12_Buildings.Fluid.Actuators.Dampers.Examples.MixingBox.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 300] "" [Timeout remaining time 300] Reference file matches [Calling sys.exit(0), Time elapsed: 8.63797602802515]