Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_dev_IDEAS.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase4.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001415/0.001415, allocations: 112.2 kB / 17.54 MB, free: 4.641 MB / 14.72 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001415/0.001415, allocations: 190.6 kB / 20.71 MB, free: 1.484 MB / 14.72 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.303/1.303, allocations: 225.6 MB / 249.3 MB, free: 3.18 MB / 190.1 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo", uses=false) [Timeout 180] "[/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/Media/Refrigerants/R410A/package.order:0:0-0:0:readonly] Warning: Found duplicate names in package.order file: A, B, C. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/Media/Refrigerants/R410A/package.mo:2:1-70:10:writable] Warning: C was referenced in the package.order file, but was not found in package.mo, C/package.mo or C.mo. Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo): time 0.9827/0.9827, allocations: 175.7 MB / 480.1 MB, free: 2.746 MB / 366.1 MB " [Timeout remaining time 179] Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo) Using package Modelica with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo) Using package Complex with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo) Using package ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Running command: "" <> buildModelFMU(IDEAS.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase4,fileNamePrefix="IDEAS_dev_IDEAS_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase4",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(IDEAS.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase4,fileNamePrefix="IDEAS_dev_IDEAS_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase4",fmuType="me",version="2.0",platforms={"static"}) [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 0.001786/0.001786, allocations: 59 kB / 0.6677 GB, free: 11.02 MB / 494.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1586/0.1604, allocations: 94.52 MB / 0.7601 GB, free: 0.8711 MB / 0.5606 GB Notification: Performance of NFInst.instantiate(IDEAS.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase4): time 0.4712/0.6316, allocations: 157.6 MB / 0.9139 GB, free: 2.258 MB / 0.6544 GB Notification: Performance of NFInst.instExpressions: time 0.02581/0.6574, allocations: 21.86 MB / 0.9353 GB, free: 404 kB / 0.67 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001949/0.6593, allocations: 55.38 kB / 0.9353 GB, free: 384 kB / 0.67 GB Notification: Performance of NFTyping.typeComponents: time 0.001475/0.6608, allocations: 1.163 MB / 0.9364 GB, free: 15.76 MB / 0.6856 GB Notification: Performance of NFTyping.typeBindings: time 0.00136/0.6622, allocations: 0.8742 MB / 0.9373 GB, free: 15.22 MB / 0.6856 GB Notification: Performance of NFTyping.typeClassSections: time 0.001098/0.6632, allocations: 460.5 kB / 0.9377 GB, free: 14.86 MB / 0.6856 GB Notification: Performance of NFFlatten.flatten: time 0.001205/0.6645, allocations: 1.255 MB / 0.939 GB, free: 14.15 MB / 0.6856 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0006201/0.6651, allocations: 0.5466 MB / 0.9395 GB, free: 13.77 MB / 0.6856 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0005714/0.6656, allocations: 0.5628 MB / 0.94 GB, free: 13.46 MB / 0.6856 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0009745/0.6666, allocations: 1.004 MB / 0.941 GB, free: 12.99 MB / 0.6856 GB Notification: Performance of NFPackage.collectConstants: time 8.867e-05/0.6667, allocations: 65.28 kB / 0.9411 GB, free: 12.99 MB / 0.6856 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0002125/0.6669, allocations: 108 kB / 0.9412 GB, free: 12.97 MB / 0.6856 GB Notification: Performance of NFScalarize.scalarize: time 0.0002476/0.6672, allocations: 324.2 kB / 0.9415 GB, free: 12.77 MB / 0.6856 GB Notification: Performance of NFVerifyModel.verify: time 0.000381/0.6676, allocations: 486.3 kB / 0.942 GB, free: 12.41 MB / 0.6856 GB Notification: Performance of NFConvertDAE.convert: time 0.001104/0.6687, allocations: 1.201 MB / 0.9431 GB, free: 11.58 MB / 0.6856 GB Notification: Performance of FrontEnd - DAE generated: time 3.446e-06/0.6687, allocations: 0 / 0.9431 GB, free: 11.58 MB / 0.6856 GB Notification: Performance of FrontEnd: time 1.252e-06/0.6687, allocations: 0 / 0.9431 GB, free: 11.58 MB / 0.6856 GB Notification: Performance of Transformations before backend: time 1.159e-05/0.6687, allocations: 0 / 0.9431 GB, free: 11.58 MB / 0.6856 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 0.002036/0.6707, allocations: 1.528 MB / 0.9446 GB, free: 10.37 MB / 0.6856 GB Notification: Performance of prepare preOptimizeDAE: time 3.097e-05/0.6707, allocations: 9.938 kB / 0.9446 GB, free: 10.37 MB / 0.6856 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001032/0.6708, allocations: 86.02 kB / 0.9447 GB, free: 10.29 MB / 0.6856 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001527/0.671, allocations: 139.5 kB / 0.9449 GB, free: 10.22 MB / 0.6856 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0007733/0.6718, allocations: 0.676 MB / 0.9455 GB, free: 9.648 MB / 0.6856 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001182/0.6719, allocations: 72.62 kB / 0.9456 GB, free: 9.594 MB / 0.6856 GB Notification: Performance of preOpt expandDerOperator (simulation): time 6.987e-05/0.672, allocations: 48.61 kB / 0.9456 GB, free: 9.578 MB / 0.6856 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0008397/0.6728, allocations: 0.5162 MB / 0.9461 GB, free: 9.254 MB / 0.6856 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.593e-05/0.6728, allocations: 1.906 kB / 0.9461 GB, free: 9.254 MB / 0.6856 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.53e-05/0.6729, allocations: 25.59 kB / 0.9462 GB, free: 9.234 MB / 0.6856 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.875e-06/0.6729, allocations: 14.09 kB / 0.9462 GB, free: 9.23 MB / 0.6856 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0007464/0.6736, allocations: 414.3 kB / 0.9466 GB, free: 9.031 MB / 0.6856 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 0.003401/0.677, allocations: 2.793 MB / 0.9493 GB, free: 6.609 MB / 0.6856 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0008933/0.6779, allocations: 432.2 kB / 0.9497 GB, free: 6.387 MB / 0.6856 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.000499/0.6784, allocations: 272.6 kB / 0.95 GB, free: 6.25 MB / 0.6856 GB Notification: Performance of preOpt evalFunc (simulation): time 3.551e-05/0.6784, allocations: 13.12 kB / 0.95 GB, free: 6.242 MB / 0.6856 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0005038/0.6789, allocations: 291.7 kB / 0.9503 GB, free: 6.062 MB / 0.6856 GB Notification: Performance of pre-optimization done (n=45): time 2.295e-06/0.6789, allocations: 4 kB / 0.9503 GB, free: 6.059 MB / 0.6856 GB Notification: Performance of matching and sorting (n=45): time 0.002667/0.6816, allocations: 1.239 MB / 0.9515 GB, free: 5.301 MB / 0.6856 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.684e-05/0.6817, allocations: 56.28 kB / 0.9515 GB, free: 5.238 MB / 0.6856 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001767/0.6834, allocations: 1.758 MB / 0.9532 GB, free: 3.57 MB / 0.6856 GB Notification: Performance of collectPreVariables (initialization): time 4.856e-05/0.6835, allocations: 37.7 kB / 0.9533 GB, free: 3.527 MB / 0.6856 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004484/0.6839, allocations: 0.5183 MB / 0.9538 GB, free: 3.004 MB / 0.6856 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001366/0.6841, allocations: 154.8 kB / 0.9539 GB, free: 2.852 MB / 0.6856 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001442/0.6842, allocations: 90.25 kB / 0.954 GB, free: 2.754 MB / 0.6856 GB Notification: Performance of setup shared object (initialization): time 0.0001397/0.6843, allocations: 334 kB / 0.9543 GB, free: 2.422 MB / 0.6856 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004782/0.6848, allocations: 213 kB / 0.9545 GB, free: 2.215 MB / 0.6856 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005637/0.6854, allocations: 328.9 kB / 0.9549 GB, free: 1.852 MB / 0.6856 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0009175/0.6863, allocations: 0.518 MB / 0.9554 GB, free: 1.297 MB / 0.6856 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.862e-06/0.6863, allocations: 4 kB / 0.9554 GB, free: 1.293 MB / 0.6856 GB Notification: Performance of matching and sorting (n=67) (initialization): time 0.001595/0.6879, allocations: 0.8408 MB / 0.9562 GB, free: 456 kB / 0.6856 GB Notification: Performance of prepare postOptimizeDAE: time 2.26e-05/0.6879, allocations: 9.719 kB / 0.9562 GB, free: 448 kB / 0.6856 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.734e-06/0.6879, allocations: 7.938 kB / 0.9562 GB, free: 440 kB / 0.6856 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005042/0.6884, allocations: 188.8 kB / 0.9564 GB, free: 248 kB / 0.6856 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003444/0.6888, allocations: 92.31 kB / 0.9565 GB, free: 156 kB / 0.6856 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003523/0.6923, allocations: 3.001 MB / 0.9594 GB, free: 13.01 MB / 0.7012 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004162/0.6927, allocations: 75.62 kB / 0.9595 GB, free: 12.94 MB / 0.7012 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.384e-05/0.6928, allocations: 16.62 kB / 0.9595 GB, free: 12.92 MB / 0.7012 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 13 * Number of states: 0 () * Number of discrete variables: 19 (assEqu.nFai,$PRE.assEqu.nFai,$whenCondition5,$PRE.intGai.nextTimeEvent,$whenCondition4,$PRE.reference.nextTimeEvent,$whenCondition3,$whenCondition1,mean.y_last,$PRE.mean.y_last,assEqu.satisfied,$PRE.assEqu.satisfied,reference.nextTimeEventScaled,$PRE.reference.nextTimeEventScaled,reference.nextTimeEvent,$whenCondition2,intGai.nextTimeEventScaled,$PRE.intGai.nextTimeEventScaled,intGai.nextTimeEvent) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (50): * Single equations (assignments): 49 * 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 {(2,16,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0004771/0.6932, allocations: 403.2 kB / 0.9599 GB, free: 12.52 MB / 0.7012 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000135/0.6934, allocations: 119.2 kB / 0.96 GB, free: 12.4 MB / 0.7012 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001446/0.6948, allocations: 0.7501 MB / 0.9607 GB, free: 11.63 MB / 0.7012 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.779e-06/0.6948, allocations: 4 kB / 0.9607 GB, free: 11.63 MB / 0.7012 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.657e-06/0.6948, allocations: 0 / 0.9607 GB, free: 11.63 MB / 0.7012 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 7.734e-06/0.6948, allocations: 4 kB / 0.9607 GB, free: 11.62 MB / 0.7012 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002384/0.6972, allocations: 1.574 MB / 0.9623 GB, free: 9.996 MB / 0.7012 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.234e-06/0.6972, allocations: 0 / 0.9623 GB, free: 9.996 MB / 0.7012 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002255/0.6974, allocations: 47.91 kB / 0.9623 GB, free: 9.949 MB / 0.7012 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004558/0.6979, allocations: 193.6 kB / 0.9625 GB, free: 9.754 MB / 0.7012 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.251e-05/0.6979, allocations: 12 kB / 0.9625 GB, free: 9.742 MB / 0.7012 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.004383/0.7023, allocations: 4.559 MB / 0.967 GB, free: 4.914 MB / 0.7012 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.017e-06/0.7023, allocations: 5.5 kB / 0.967 GB, free: 4.91 MB / 0.7012 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001774/0.7041, allocations: 1.071 MB / 0.968 GB, free: 3.816 MB / 0.7012 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002458/0.7043, allocations: 224.2 kB / 0.9682 GB, free: 3.578 MB / 0.7012 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 8.229e-05/0.7044, allocations: 12 kB / 0.9682 GB, free: 3.566 MB / 0.7012 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003035/0.7047, allocations: 29.09 kB / 0.9683 GB, free: 3.539 MB / 0.7012 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001131/0.7048, allocations: 47.92 kB / 0.9683 GB, free: 3.492 MB / 0.7012 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.859e-05/0.7049, allocations: 23.92 kB / 0.9683 GB, free: 3.469 MB / 0.7012 GB Notification: Performance of sorting global known variables: time 0.001352/0.7062, allocations: 1.28 MB / 0.9696 GB, free: 2.184 MB / 0.7012 GB Notification: Performance of sort global known variables: time 8e-08/0.7062, allocations: 4 kB / 0.9696 GB, free: 2.18 MB / 0.7012 GB Notification: Performance of remove unused functions: time 0.000703/0.7069, allocations: 207.7 kB / 0.9698 GB, free: 1.977 MB / 0.7012 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 4 (thermalZoneTwoElements.extWallRC.thermCapExt[1].T,thermalZoneTwoElements.intWallRC.thermCapInt[1].T,assEqu.diff,mean.x) * Number of discrete variables: 12 ($whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,intGai.nextTimeEvent,intGai.nextTimeEventScaled,reference.nextTimeEvent,reference.nextTimeEventScaled,assEqu.satisfied,assEqu.nFai,mean.y_last) * 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 (29): * Single equations (assignments): 21 * 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 {(2,13,100.0%), (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 0.00354/0.7105, allocations: 1.983 MB / 0.9717 GB, free: 152 kB / 0.7012 GB Notification: Performance of simCode: created initialization part: time 0.001472/0.7119, allocations: 0.6925 MB / 0.9724 GB, free: 15.44 MB / 0.7169 GB Notification: Performance of simCode: created event and clocks part: time 3.276e-06/0.7119, allocations: 0 / 0.9724 GB, free: 15.44 MB / 0.7169 GB Notification: Performance of simCode: created simulation system equations: time 0.0008915/0.7128, allocations: 0.5478 MB / 0.9729 GB, free: 14.87 MB / 0.7169 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0009299/0.7138, allocations: 203 kB / 0.9731 GB, free: 14.68 MB / 0.7169 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.012/0.7258, allocations: 8.597 MB / 0.9815 GB, free: 5.867 MB / 0.7169 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0008151/0.7266, allocations: 1.161 MB / 0.9827 GB, free: 4.68 MB / 0.7169 GB Notification: Performance of simCode: alias equations: time 0.0002717/0.7269, allocations: 88.72 kB / 0.9827 GB, free: 4.594 MB / 0.7169 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004641/0.7273, allocations: 411.2 kB / 0.9831 GB, free: 4.191 MB / 0.7169 GB Notification: Performance of SimCode: time 6.21e-07/0.7273, allocations: 0 / 0.9831 GB, free: 4.191 MB / 0.7169 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.05328/0.7806, allocations: 21.44 MB / 1.004 GB, free: 14.95 MB / 0.7481 GB Notification: Performance of buildModelFMU: Generate platform static: time 10.77/11.55, allocations: 11.94 kB / 1.004 GB, free: 14.95 MB / 0.7481 GB " [Timeout remaining time 648] (rm -f IDEAS_dev_IDEAS.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase4.pipe ; mkfifo IDEAS_dev_IDEAS.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase4.pipe ; head -c 1048576 < IDEAS_dev_IDEAS.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase4.pipe >> ../files/IDEAS_dev_IDEAS.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase4.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_IDEAS_dev_IDEAS_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase4_fmu --startTime=0 --stopTime=5.184e+06 --timeout=50 --tolerance=1e-06 IDEAS_dev_IDEAS_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase4.fmu > IDEAS_dev_IDEAS.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase4.pipe 2>&1) [Timeout 52.5] [Calling sys.exit(0), Time elapsed: 16.508668434995343]