Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7.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 0.001383/0.001383, allocations: 104.4 kB / 19.7 MB, free: 2.125 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 0.001603/0.001603, allocations: 216.9 kB / 22.99 MB, free: 4.945 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 1.463/1.463, allocations: 230.6 MB / 256.8 MB, free: 7.781 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 3.338/3.338, allocations: 0.5107 GB / 0.8166 GB, free: 17.8 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: translateModel(Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7,tolerance=1e-06,outputFormat="mat",numberOfIntervals=86400,variableFilter="time|mean.y|reference.y.1.|assEqu.diff|assEqu.threShold|assEqu.satisfied",fileNamePrefix="Buildings_latest_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7") translateModel(Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7,tolerance=1e-06,outputFormat="mat",numberOfIntervals=86400,variableFilter="time|mean.y|reference.y.1.|assEqu.diff|assEqu.threShold|assEqu.satisfied",fileNamePrefix="Buildings_latest_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7") [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 0.002586/0.002586, allocations: 74.31 kB / 1.187 GB, free: 13.45 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3772/0.3798, allocations: 181.9 MB / 1.365 GB, free: 13.58 MB / 1.061 GB Notification: Performance of NFInst.instantiate(Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7): time 0.1842/0.564, allocations: 139.5 MB / 1.501 GB, free: 1.535 MB / 1.186 GB Notification: Performance of NFInst.instExpressions: time 0.03023/0.5942, allocations: 20.09 MB / 1.52 GB, free: 13.39 MB / 1.217 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002234/0.5964, allocations: 83.38 kB / 1.521 GB, free: 13.3 MB / 1.217 GB Notification: Performance of NFTyping.typeComponents: time 0.00237/0.5988, allocations: 1.387 MB / 1.522 GB, free: 11.91 MB / 1.217 GB Notification: Performance of NFTyping.typeBindings: time 0.002398/0.6012, allocations: 1.086 MB / 1.523 GB, free: 10.82 MB / 1.217 GB Notification: Performance of NFTyping.typeClassSections: time 0.001701/0.6029, allocations: 0.5594 MB / 1.523 GB, free: 10.27 MB / 1.217 GB Notification: Performance of NFFlatten.flatten: time 0.00267/0.6056, allocations: 1.727 MB / 1.525 GB, free: 8.523 MB / 1.217 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001293/0.6069, allocations: 0.7603 MB / 1.526 GB, free: 7.742 MB / 1.217 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001138/0.608, allocations: 0.7553 MB / 1.527 GB, free: 6.984 MB / 1.217 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001696/0.6097, allocations: 1.276 MB / 1.528 GB, free: 5.703 MB / 1.217 GB Notification: Performance of NFPackage.collectConstants: time 0.0001837/0.6099, allocations: 92 kB / 1.528 GB, free: 5.613 MB / 1.217 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0003736/0.6103, allocations: 140 kB / 1.528 GB, free: 5.477 MB / 1.217 GB Notification: Performance of NFScalarize.scalarize: time 0.0003764/0.6106, allocations: 428.3 kB / 1.529 GB, free: 5.059 MB / 1.217 GB Notification: Performance of NFVerifyModel.verify: time 0.0005172/0.6112, allocations: 0.5083 MB / 1.529 GB, free: 4.547 MB / 1.217 GB Notification: Performance of NFConvertDAE.convert: time 0.001822/0.613, allocations: 1.649 MB / 1.531 GB, free: 2.891 MB / 1.217 GB Notification: Performance of FrontEnd - DAE generated: time 4.348e-06/0.613, allocations: 0 / 1.531 GB, free: 2.891 MB / 1.217 GB Notification: Performance of FrontEnd: time 3.647e-06/0.613, allocations: 4 kB / 1.531 GB, free: 2.887 MB / 1.217 GB Notification: Performance of Transformations before backend: time 1.639e-05/0.613, allocations: 0 / 1.531 GB, free: 2.887 MB / 1.217 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 157 * Number of variables: 157 Notification: Performance of Generate backend data structure: time 0.003372/0.6164, allocations: 1.973 MB / 1.533 GB, free: 0.8711 MB / 1.217 GB Notification: Performance of prepare preOptimizeDAE: time 3.756e-05/0.6164, allocations: 12.02 kB / 1.533 GB, free: 0.8594 MB / 1.217 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0003976/0.6168, allocations: 199.7 kB / 1.533 GB, free: 0.6641 MB / 1.217 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001528/0.6183, allocations: 0.8359 MB / 1.534 GB, free: 15.79 MB / 1.232 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002129/0.6185, allocations: 112.7 kB / 1.534 GB, free: 15.67 MB / 1.232 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001206/0.6187, allocations: 67.95 kB / 1.534 GB, free: 15.61 MB / 1.232 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001399/0.6201, allocations: 0.7583 MB / 1.535 GB, free: 14.81 MB / 1.232 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.324e-05/0.6201, allocations: 0 / 1.535 GB, free: 14.81 MB / 1.232 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.854e-05/0.6201, allocations: 20 kB / 1.535 GB, free: 14.79 MB / 1.232 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.766e-05/0.6202, allocations: 16 kB / 1.535 GB, free: 14.78 MB / 1.232 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.00119/0.6214, allocations: 0.5438 MB / 1.535 GB, free: 14.23 MB / 1.232 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 0.004475/0.6258, allocations: 2.507 MB / 1.538 GB, free: 11.66 MB / 1.232 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001376/0.6272, allocations: 0.5772 MB / 1.538 GB, free: 11.08 MB / 1.232 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0007477/0.628, allocations: 354.1 kB / 1.538 GB, free: 10.73 MB / 1.232 GB Notification: Performance of preOpt evalFunc (simulation): time 3.756e-05/0.628, allocations: 8.5 kB / 1.538 GB, free: 10.72 MB / 1.232 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0007676/0.6288, allocations: 388 kB / 1.539 GB, free: 10.34 MB / 1.232 GB Notification: Performance of pre-optimization done (n=65): time 2.635e-06/0.6288, allocations: 0 / 1.539 GB, free: 10.34 MB / 1.232 GB Notification: Performance of matching and sorting (n=65): time 0.005343/0.6341, allocations: 1.684 MB / 1.54 GB, free: 8.637 MB / 1.232 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.088e-05/0.6342, allocations: 56.06 kB / 1.541 GB, free: 8.57 MB / 1.232 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002694/0.6369, allocations: 2.28 MB / 1.543 GB, free: 6.281 MB / 1.232 GB Notification: Performance of collectPreVariables (initialization): time 6.245e-05/0.6369, allocations: 41.7 kB / 1.543 GB, free: 6.234 MB / 1.232 GB Notification: Performance of collectInitialEqns (initialization): time 0.0006688/0.6376, allocations: 0.7074 MB / 1.543 GB, free: 5.523 MB / 1.232 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002131/0.6378, allocations: 226.1 kB / 1.544 GB, free: 5.301 MB / 1.232 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002086/0.638, allocations: 130.7 kB / 1.544 GB, free: 5.168 MB / 1.232 GB Notification: Performance of setup shared object (initialization): time 0.0001658/0.6382, allocations: 337.9 kB / 1.544 GB, free: 4.832 MB / 1.232 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0006869/0.6389, allocations: 281.8 kB / 1.544 GB, free: 4.555 MB / 1.232 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0007897/0.6396, allocations: 420.8 kB / 1.545 GB, free: 4.094 MB / 1.232 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001316/0.641, allocations: 0.6685 MB / 1.545 GB, free: 3.375 MB / 1.232 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.242e-06/0.641, allocations: 7.938 kB / 1.545 GB, free: 3.367 MB / 1.232 GB Notification: Performance of matching and sorting (n=93) (initialization): time 0.002492/0.6435, allocations: 1.126 MB / 1.547 GB, free: 2.23 MB / 1.232 GB Notification: Performance of prepare postOptimizeDAE: time 2.112e-05/0.6435, allocations: 8.219 kB / 1.547 GB, free: 2.223 MB / 1.232 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.408e-06/0.6435, allocations: 8 kB / 1.547 GB, free: 2.215 MB / 1.232 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.000819/0.6443, allocations: 264.7 kB / 1.547 GB, free: 1.953 MB / 1.232 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004617/0.6448, allocations: 123.8 kB / 1.547 GB, free: 1.832 MB / 1.232 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.005688/0.6505, allocations: 3.516 MB / 1.55 GB, free: 14.22 MB / 1.248 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005953/0.6511, allocations: 91.52 kB / 1.55 GB, free: 14.13 MB / 1.248 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.692e-05/0.6511, allocations: 24 kB / 1.55 GB, free: 14.11 MB / 1.248 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 17 * Number of states: 0 () * Number of discrete variables: 25 (assEqu.nFai,$PRE.assEqu.nFai,$whenCondition6,$PRE.intGai.nextTimeEvent,$whenCondition5,$PRE.reference.nextTimeEvent,$whenCondition4,$PRE.setTemp.nextTimeEvent,$whenCondition3,$whenCondition1,reference.nextTimeEvent,reference.nextTimeEventScaled,$PRE.reference.nextTimeEventScaled,assEqu.satisfied,$PRE.assEqu.satisfied,mean.y_last,$PRE.mean.y_last,$whenCondition2,intGai.nextTimeEvent,intGai.nextTimeEventScaled,$PRE.intGai.nextTimeEventScaled,setTemp.nextTimeEvent,setTemp.nextTimeEventScaled,$PRE.setTemp.nextTimeEventScaled,conHeaCoo.I.trigger_internal) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (67): * Single equations (assignments): 66 * 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): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(2,25)} Notification: Performance of prepare postOptimizeDAE: time 0.0006734/0.6518, allocations: 473.1 kB / 1.551 GB, free: 13.64 MB / 1.248 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001942/0.652, allocations: 166.9 kB / 1.551 GB, free: 13.47 MB / 1.248 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002394/0.6544, allocations: 1.045 MB / 1.552 GB, free: 12.41 MB / 1.248 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.036e-05/0.6544, allocations: 8 kB / 1.552 GB, free: 12.4 MB / 1.248 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 9.377e-06/0.6544, allocations: 0 / 1.552 GB, free: 12.4 MB / 1.248 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.044e-05/0.6544, allocations: 7.922 kB / 1.552 GB, free: 12.39 MB / 1.248 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003593/0.658, allocations: 1.884 MB / 1.554 GB, free: 10.46 MB / 1.248 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.767e-06/0.658, allocations: 0 / 1.554 GB, free: 10.46 MB / 1.248 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000299/0.6583, allocations: 63.91 kB / 1.554 GB, free: 10.4 MB / 1.248 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0007774/0.6591, allocations: 283.5 kB / 1.554 GB, free: 10.12 MB / 1.248 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.631e-05/0.6591, allocations: 15.98 kB / 1.554 GB, free: 10.11 MB / 1.248 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.006541/0.6657, allocations: 4.938 MB / 1.559 GB, free: 4.969 MB / 1.248 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.362e-06/0.6657, allocations: 0 / 1.559 GB, free: 4.969 MB / 1.248 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002876/0.6685, allocations: 1.445 MB / 1.561 GB, free: 3.5 MB / 1.248 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004174/0.669, allocations: 198.8 kB / 1.561 GB, free: 3.305 MB / 1.248 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001172/0.6691, allocations: 12 kB / 1.561 GB, free: 3.293 MB / 1.248 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0004181/0.6695, allocations: 39.95 kB / 1.561 GB, free: 3.254 MB / 1.248 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001719/0.6697, allocations: 80.39 kB / 1.561 GB, free: 3.176 MB / 1.248 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.247e-05/0.6697, allocations: 23.98 kB / 1.561 GB, free: 3.152 MB / 1.248 GB Notification: Performance of sorting global known variables: time 0.002055/0.6718, allocations: 1.647 MB / 1.562 GB, free: 1.512 MB / 1.248 GB Notification: Performance of sort global known variables: time 1.11e-07/0.6718, allocations: 0 / 1.562 GB, free: 1.512 MB / 1.248 GB Notification: Performance of remove unused functions: time 0.0009432/0.6727, allocations: 279.5 kB / 1.563 GB, free: 1.238 MB / 1.248 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 5 (mean.x,assEqu.diff,conHeaCoo.I.y,thermalZoneTwoElements.intWallRC.thermCapInt[1].T,thermalZoneTwoElements.extWallRC.thermCapExt[1].T) * Number of discrete variables: 15 ($whenCondition6,$whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,mean.y_last,assEqu.nFai,assEqu.satisfied,setTemp.nextTimeEventScaled,setTemp.nextTimeEvent,reference.nextTimeEventScaled,reference.nextTimeEvent,intGai.nextTimeEventScaled,intGai.nextTimeEvent) * Number of discrete states: 9 (intGai.nextTimeEvent,reference.nextTimeEvent,setTemp.nextTimeEvent,mean.x,assEqu.satisfied,assEqu.nFai,setTemp.nextTimeEventScaled,reference.nextTimeEventScaled,intGai.nextTimeEventScaled) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (42): * Single equations (assignments): 32 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 8 * 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): 1 system {(1,3,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(2,22)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001984/0.6747, allocations: 0.5109 MB / 1.563 GB, free: 0.9414 MB / 1.248 GB Notification: Performance of simCode: created initialization part: time 0.002041/0.6767, allocations: 0.8887 MB / 1.564 GB, free: 36 kB / 1.248 GB Notification: Performance of simCode: created event and clocks part: time 4.038e-06/0.6767, allocations: 0 / 1.564 GB, free: 36 kB / 1.248 GB Notification: Performance of simCode: created simulation system equations: time 0.00119/0.6779, allocations: 0.6606 MB / 1.565 GB, free: 15.35 MB / 1.264 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001273/0.6792, allocations: 288.3 kB / 1.565 GB, free: 15.08 MB / 1.264 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.005152/0.6844, allocations: 3.238 MB / 1.568 GB, free: 11.8 MB / 1.264 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0008696/0.6852, allocations: 0.7228 MB / 1.569 GB, free: 11.05 MB / 1.264 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001682/0.6854, allocations: 63.36 kB / 1.569 GB, free: 10.98 MB / 1.264 GB Notification: Performance of SimCode: time 5.21e-07/0.6854, allocations: 0 / 1.569 GB, free: 10.98 MB / 1.264 GB Notification: Performance of Templates: time 0.03563/0.721, allocations: 24.61 MB / 1.593 GB, free: 2.402 MB / 1.279 GB " [Timeout remaining time 299] make -j1 -f Buildings_latest_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7.makefile [Timeout 300] (rm -f Buildings_latest_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7.pipe ; mkfifo Buildings_latest_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7.pipe ; head -c 1048576 < Buildings_latest_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7.pipe >> ../files/Buildings_latest_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7.sim & ./Buildings_latest_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7 -abortSlowSimulation -alarm=800 -emit_protected -lv LOG_STATS > Buildings_latest_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7.pipe 2>&1) [Timeout 800] diffSimulationResults("Buildings_latest_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7_res.mat","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase7.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 300] "" [Timeout remaining time 299] "" Variables in the reference:time,mean.y,reference.y[1],assEqu.diff,assEqu.threShold,assEqu.satisfied Variables in the result:assEqu.diff,assEqu.satisfied,assEqu.threShold,mean.y,reference.y[1],time [Calling sys.exit(0), Time elapsed: 15.59881908306852]