Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow.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 0.001016/0.001016, allocations: 81.95 kB / 19.87 MB, free: 4.621 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 0.001702/0.001702, allocations: 169.7 kB / 23.28 MB, free: 1.223 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 0.9423/0.9423, allocations: 177.2 MB / 203.7 MB, free: 5.508 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 2.231/2.231, allocations: 438.1 MB / 0.682 GB, free: 14.16 MB / 0.6511 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.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|actAirSet.uOpeMod|actAirSet.VCooMax_flow|actAirSet.VOccMin_flow|actAirSet.VActCooMax_flow|actAirSet.VActMin_flow|actAirSet.VActHeaMax_flow",fileNamePrefix="Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow") translateModel(Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|actAirSet.uOpeMod|actAirSet.VCooMax_flow|actAirSet.VOccMin_flow|actAirSet.VActCooMax_flow|actAirSet.VActMin_flow|actAirSet.VActHeaMax_flow",fileNamePrefix="Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow") [Timeout 300] "Notification: Performance of FrontEnd - loaded program: time 3.947e-06/3.947e-06, allocations: 0 / 0.8898 GB, free: 9.73 MB / 0.8542 GB Notification: Performance of FrontEnd - Absyn->SCode: time 3.84e-05/4.235e-05, allocations: 2.312 kB / 0.8898 GB, free: 9.727 MB / 0.8542 GB Notification: Performance of NFInst.instantiate(Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow): time 0.0032/0.003242, allocations: 1.11 MB / 0.8909 GB, free: 8.617 MB / 0.8542 GB Notification: Performance of NFInst.instExpressions: time 0.001611/0.004853, allocations: 1.077 MB / 0.8919 GB, free: 7.527 MB / 0.8542 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0001426/0.004996, allocations: 8 kB / 0.8919 GB, free: 7.52 MB / 0.8542 GB Notification: Performance of NFTyping.typeComponents: time 7.652e-05/0.005072, allocations: 23.67 kB / 0.8919 GB, free: 7.496 MB / 0.8542 GB Notification: Performance of NFTyping.typeBindings: time 0.0001584/0.005231, allocations: 39.61 kB / 0.892 GB, free: 7.457 MB / 0.8542 GB Notification: Performance of NFTyping.typeClassSections: time 0.0003254/0.005556, allocations: 87.83 kB / 0.8921 GB, free: 7.371 MB / 0.8542 GB Notification: Performance of NFFlatten.flatten: time 0.0002566/0.005813, allocations: 228.2 kB / 0.8923 GB, free: 7.148 MB / 0.8542 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0003177/0.00613, allocations: 100.6 kB / 0.8924 GB, free: 7.047 MB / 0.8542 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0003779/0.006508, allocations: 155.5 kB / 0.8925 GB, free: 6.895 MB / 0.8542 GB Notification: Performance of NFSimplifyModel.simplify: time 9.596e-05/0.006604, allocations: 63.78 kB / 0.8926 GB, free: 6.832 MB / 0.8542 GB Notification: Performance of NFPackage.collectConstants: time 2.899e-05/0.006633, allocations: 24 kB / 0.8926 GB, free: 6.809 MB / 0.8542 GB Notification: Performance of NFFlatten.collectFunctions: time 5.63e-05/0.006689, allocations: 24 kB / 0.8926 GB, free: 6.785 MB / 0.8542 GB Notification: Performance of NFScalarize.scalarize: time 2.932e-05/0.006719, allocations: 47.83 kB / 0.8927 GB, free: 6.738 MB / 0.8542 GB Notification: Performance of NFVerifyModel.verify: time 3.834e-05/0.006757, allocations: 55.84 kB / 0.8927 GB, free: 6.684 MB / 0.8542 GB Notification: Performance of NFConvertDAE.convert: time 0.0001994/0.006956, allocations: 155.3 kB / 0.8929 GB, free: 6.531 MB / 0.8542 GB Notification: Performance of FrontEnd - DAE generated: time 4.408e-06/0.006961, allocations: 0 / 0.8929 GB, free: 6.531 MB / 0.8542 GB Notification: Performance of FrontEnd: time 1.323e-06/0.006962, allocations: 0 / 0.8929 GB, free: 6.531 MB / 0.8542 GB Notification: Performance of Transformations before backend: time 4.619e-06/0.006967, allocations: 4 kB / 0.8929 GB, free: 6.527 MB / 0.8542 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 52 * Number of variables: 52 Notification: Performance of Generate backend data structure: time 0.0004533/0.00742, allocations: 0.5156 MB / 0.8934 GB, free: 5.973 MB / 0.8542 GB Notification: Performance of prepare preOptimizeDAE: time 3.872e-05/0.007459, allocations: 12.62 kB / 0.8934 GB, free: 5.961 MB / 0.8542 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001203/0.007579, allocations: 52.8 kB / 0.8935 GB, free: 5.91 MB / 0.8542 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0001568/0.007736, allocations: 206.6 kB / 0.8936 GB, free: 5.684 MB / 0.8542 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.126e-05/0.007757, allocations: 16.88 kB / 0.8937 GB, free: 5.664 MB / 0.8542 GB Notification: Performance of preOpt expandDerOperator (simulation): time 1.639e-05/0.007774, allocations: 20.38 kB / 0.8937 GB, free: 5.645 MB / 0.8542 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0001756/0.007949, allocations: 149.4 kB / 0.8938 GB, free: 5.492 MB / 0.8542 GB Notification: Performance of preOpt findStateOrder (simulation): time 6.923e-06/0.007956, allocations: 192 / 0.8938 GB, free: 5.492 MB / 0.8542 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 1.23e-05/0.007968, allocations: 8.359 kB / 0.8938 GB, free: 5.484 MB / 0.8542 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 5.771e-06/0.007974, allocations: 8.375 kB / 0.8938 GB, free: 5.477 MB / 0.8542 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 7.023e-05/0.008044, allocations: 63.39 kB / 0.8939 GB, free: 5.414 MB / 0.8542 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.000466/0.00851, allocations: 499.3 kB / 0.8944 GB, free: 4.895 MB / 0.8542 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0001279/0.008638, allocations: 107.2 kB / 0.8945 GB, free: 4.777 MB / 0.8542 GB Notification: Performance of preOpt resolveLoops (simulation): time 3.032e-05/0.008669, allocations: 31.67 kB / 0.8945 GB, free: 4.742 MB / 0.8542 GB Notification: Performance of preOpt evalFunc (simulation): time 1.678e-05/0.008685, allocations: 0 / 0.8945 GB, free: 4.742 MB / 0.8542 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 1.858e-05/0.008704, allocations: 41.39 kB / 0.8946 GB, free: 4.691 MB / 0.8542 GB Notification: Performance of pre-optimization done (n=17): time 9.41e-07/0.008705, allocations: 3.938 kB / 0.8946 GB, free: 4.688 MB / 0.8542 GB Notification: Performance of matching and sorting (n=17): time 0.0001715/0.008877, allocations: 125.4 kB / 0.8947 GB, free: 4.559 MB / 0.8542 GB Notification: Performance of inlineWhenForInitialization (initialization): time 2.246e-05/0.008899, allocations: 59.41 kB / 0.8947 GB, free: 4.488 MB / 0.8542 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0001017/0.009001, allocations: 238.7 kB / 0.895 GB, free: 4.238 MB / 0.8542 GB Notification: Performance of collectPreVariables (initialization): time 1.274e-05/0.009013, allocations: 29.7 kB / 0.895 GB, free: 4.203 MB / 0.8542 GB Notification: Performance of collectInitialEqns (initialization): time 5.945e-05/0.009073, allocations: 187.2 kB / 0.8952 GB, free: 4.016 MB / 0.8542 GB Notification: Performance of collectInitialBindings (initialization): time 2.621e-05/0.009099, allocations: 43.62 kB / 0.8952 GB, free: 3.973 MB / 0.8542 GB Notification: Performance of simplifyInitialFunctions (initialization): time 5.182e-05/0.009151, allocations: 63.31 kB / 0.8953 GB, free: 3.902 MB / 0.8542 GB Notification: Performance of setup shared object (initialization): time 0.0001014/0.009252, allocations: 0.5 MB / 0.8958 GB, free: 3.391 MB / 0.8542 GB Notification: Performance of preBalanceInitialSystem (initialization): time 2.681e-05/0.009279, allocations: 15.98 kB / 0.8958 GB, free: 3.375 MB / 0.8542 GB Notification: Performance of partitionIndependentBlocks (initialization): time 5.097e-05/0.00933, allocations: 83.77 kB / 0.8959 GB, free: 3.27 MB / 0.8542 GB Notification: Performance of analyzeInitialSystem (initialization): time 8.316e-05/0.009413, allocations: 104 kB / 0.8959 GB, free: 3.145 MB / 0.8542 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.573e-06/0.009415, allocations: 0 / 0.8959 GB, free: 3.145 MB / 0.8542 GB Notification: Performance of matching and sorting (n=22) (initialization): time 0.0001242/0.009539, allocations: 143.5 kB / 0.8961 GB, free: 3 MB / 0.8542 GB Notification: Performance of prepare postOptimizeDAE: time 1.051e-05/0.00955, allocations: 7.938 kB / 0.8961 GB, free: 2.992 MB / 0.8542 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.278e-06/0.009554, allocations: 160 / 0.8961 GB, free: 2.992 MB / 0.8542 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.028e-05/0.009564, allocations: 8 kB / 0.8961 GB, free: 2.984 MB / 0.8542 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 8.368e-05/0.009648, allocations: 31.86 kB / 0.8961 GB, free: 2.953 MB / 0.8542 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 4.368e-06/0.009652, allocations: 4 kB / 0.8961 GB, free: 2.949 MB / 0.8542 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 4.026e-05/0.009692, allocations: 19.89 kB / 0.8962 GB, free: 2.93 MB / 0.8542 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.045e-06/0.0097, allocations: 7.984 kB / 0.8962 GB, free: 2.922 MB / 0.8542 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 6 * Number of states: 0 () * Number of discrete variables: 15 (reaToInt2.y,actAirSet.or4.y,actAirSet.or2.y,actAirSet.or1.y,actAirSet.ifSetBac.y,actAirSet.ifWarUp.y,actAirSet.ifSetUp.y,actAirSet.ifCooDow.y,actAirSet.ifOcc.y,actAirSet.or3.y,actAirSet.occMod.y,actAirSet.cooDowMod.y,actAirSet.setUpMod.y,actAirSet.setBacMod.y,actAirSet.warUpMod.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (22): * Single equations (assignments): 22 * 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 7.651e-05/0.009777, allocations: 181.3 kB / 0.8963 GB, free: 2.734 MB / 0.8542 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 2.121e-05/0.009798, allocations: 15.91 kB / 0.8964 GB, free: 2.719 MB / 0.8542 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 2.643e-05/0.009825, allocations: 25.81 kB / 0.8964 GB, free: 2.699 MB / 0.8542 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.533e-06/0.009826, allocations: 0 / 0.8964 GB, free: 2.699 MB / 0.8542 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.204e-06/0.009828, allocations: 3.938 kB / 0.8964 GB, free: 2.695 MB / 0.8542 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.408e-06/0.009833, allocations: 7.984 kB / 0.8964 GB, free: 2.688 MB / 0.8542 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.000121/0.009954, allocations: 157.1 kB / 0.8965 GB, free: 2.508 MB / 0.8542 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.61e-07/0.009955, allocations: 0 / 0.8965 GB, free: 2.508 MB / 0.8542 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 4.219e-05/0.009997, allocations: 19.98 kB / 0.8966 GB, free: 2.488 MB / 0.8542 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.443e-06/0.009998, allocations: 0 / 0.8966 GB, free: 2.488 MB / 0.8542 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.994e-06/0.01001, allocations: 8 kB / 0.8966 GB, free: 2.48 MB / 0.8542 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.473e-06/0.01001, allocations: 3.984 kB / 0.8966 GB, free: 2.477 MB / 0.8542 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 7.62e-07/0.01001, allocations: 0 / 0.8966 GB, free: 2.477 MB / 0.8542 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0001301/0.01014, allocations: 263.6 kB / 0.8968 GB, free: 2.199 MB / 0.8542 GB Notification: Performance of postOpt removeConstants (simulation): time 1.005e-05/0.01015, allocations: 15.84 kB / 0.8968 GB, free: 2.184 MB / 0.8542 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 1.175e-05/0.01016, allocations: 4 kB / 0.8968 GB, free: 2.18 MB / 0.8542 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 4.198e-05/0.0102, allocations: 7.984 kB / 0.8968 GB, free: 2.172 MB / 0.8542 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 4.576e-05/0.01025, allocations: 23.97 kB / 0.8969 GB, free: 2.148 MB / 0.8542 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.438e-06/0.01025, allocations: 0 / 0.8969 GB, free: 2.148 MB / 0.8542 GB Notification: Performance of sorting global known variables: time 4.648e-05/0.0103, allocations: 164.6 kB / 0.897 GB, free: 1.988 MB / 0.8542 GB Notification: Performance of sort global known variables: time 5e-08/0.0103, allocations: 0 / 0.897 GB, free: 1.988 MB / 0.8542 GB Notification: Performance of remove unused functions: time 0.0001628/0.01046, allocations: 39.89 kB / 0.8971 GB, free: 1.949 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: 10 (actAirSet.or3.y,actAirSet.ifOcc.y,actAirSet.ifCooDow.y,actAirSet.ifSetUp.y,actAirSet.ifWarUp.y,actAirSet.ifSetBac.y,actAirSet.or1.y,actAirSet.or2.y,actAirSet.or4.y,reaToInt2.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (17): * Single equations (assignments): 17 * 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 8.453e-05/0.01055, allocations: 115.2 kB / 0.8972 GB, free: 1.824 MB / 0.8542 GB Notification: Performance of simCode: created initialization part: time 0.0001054/0.01065, allocations: 85.52 kB / 0.8973 GB, free: 1.738 MB / 0.8542 GB Notification: Performance of simCode: created event and clocks part: time 1.012e-06/0.01065, allocations: 0 / 0.8973 GB, free: 1.738 MB / 0.8542 GB Notification: Performance of simCode: created simulation system equations: time 4.37e-05/0.0107, allocations: 51.59 kB / 0.8973 GB, free: 1.684 MB / 0.8542 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0001788/0.01087, allocations: 20 kB / 0.8973 GB, free: 1.664 MB / 0.8542 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0004775/0.01135, allocations: 331.1 kB / 0.8976 GB, free: 1.312 MB / 0.8542 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 3.79e-05/0.01139, allocations: 71.98 kB / 0.8977 GB, free: 1.219 MB / 0.8542 GB Notification: Performance of simCode: alias equations: time 5.701e-05/0.01145, allocations: 25.42 kB / 0.8977 GB, free: 1.195 MB / 0.8542 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 7.765e-05/0.01152, allocations: 106.1 kB / 0.8978 GB, free: 1.09 MB / 0.8542 GB Notification: Performance of SimCode: time 8.82e-07/0.01153, allocations: 0 / 0.8978 GB, free: 1.09 MB / 0.8542 GB Notification: Performance of Templates: time 0.0031/0.01463, allocations: 1.629 MB / 0.8994 GB, free: 15.54 MB / 0.8698 GB " [Timeout remaining time 300] make -j1 -f Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow.makefile [Timeout 300] (rm -f Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow.pipe ; mkfifo Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow.pipe ; head -c 1048576 < Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow.pipe >> ../files/Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow.sim & ./Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow -abortSlowSimulation -alarm=240 -emit_protected -lv LOG_STATS > Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow.pipe 2>&1) [Timeout 240] diffSimulationResults("Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow_res.mat","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctMixConDischargeSensor_Subsequences_Validation_ActiveAirFlow.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: 5.122224347200245]