Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstanceReverseFlow.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 0.0009005/0.0009005, allocations: 80.94 kB / 19.94 MB, free: 4.547 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 0.001015/0.001015, allocations: 173 kB / 23.36 MB, free: 1.133 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 0.9787/0.9787, allocations: 177.1 MB / 203.8 MB, free: 5.465 MB / 186.7 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/package.mo", uses=false) [Timeout 180] "[/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Examples/PPD12/Structure.mo:531:21-545:108:writable] Warning: Lexer treating \\ as \\\\, since \\e is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Examples/PPD12/Structure.mo:531:21-545:116:writable] Warning: Lexer treating \\ as \\\\, since \\< is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/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 4.0.0/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 4.0.0/package.mo): time 0.8541/0.8541, allocations: 154.6 MB / 414.8 MB, free: 496 kB / 378.7 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Utilities/Cryptographics/BaseClasses/sha.mo:2:1-19:8:writable] Warning: External function annotation should occur on the external-clause, not on the function. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Utilities/File/sha2.mo:2:1-9:9:writable] Warning: External function annotation should occur on the external-clause, not on the function. " [Timeout remaining time 179] Using package IDEAS with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/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(IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstanceReverseFlow,tolerance=1e-08,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstanceReverseFlow") translateModel(IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstanceReverseFlow,tolerance=1e-08,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstanceReverseFlow") [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 2.665e-06/2.665e-06, allocations: 4 kB / 480 MB, free: 6.898 MB / 442.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 2.47e-05/2.736e-05, allocations: 2.312 kB / 480 MB, free: 6.895 MB / 442.7 MB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstanceReverseFlow): time 0.1492/0.1493, allocations: 150.3 MB / 0.6155 GB, free: 496 kB / 0.573 GB Notification: Performance of NFInst.instExpressions: time 0.005622/0.1549, allocations: 3.919 MB / 0.6194 GB, free: 12.57 MB / 0.5886 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0005596/0.1555, allocations: 55.5 kB / 0.6194 GB, free: 12.51 MB / 0.5886 GB Notification: Performance of NFTyping.typeComponents: time 0.000555/0.156, allocations: 293.8 kB / 0.6197 GB, free: 12.22 MB / 0.5886 GB Notification: Performance of NFTyping.typeBindings: time 0.001592/0.1576, allocations: 1.181 MB / 0.6208 GB, free: 11.04 MB / 0.5886 GB Notification: Performance of NFTyping.typeClassSections: time 0.001203/0.1588, allocations: 0.9004 MB / 0.6217 GB, free: 10.13 MB / 0.5886 GB Notification: Performance of NFFlatten.flatten: time 0.001996/0.1608, allocations: 2.98 MB / 0.6246 GB, free: 7.148 MB / 0.5886 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001153/0.162, allocations: 0.8771 MB / 0.6255 GB, free: 6.242 MB / 0.5886 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001756/0.1637, allocations: 1.54 MB / 0.627 GB, free: 4.727 MB / 0.5886 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0007961/0.1645, allocations: 0.8764 MB / 0.6279 GB, free: 3.848 MB / 0.5886 GB Notification: Performance of NFPackage.collectConstants: time 0.0001231/0.1646, allocations: 124 kB / 0.628 GB, free: 3.727 MB / 0.5886 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0005158/0.1651, allocations: 415.1 kB / 0.6284 GB, free: 3.32 MB / 0.5886 GB Notification: Performance of NFScalarize.scalarize: time 0.0003984/0.1655, allocations: 0.6234 MB / 0.629 GB, free: 2.695 MB / 0.5886 GB Notification: Performance of NFVerifyModel.verify: time 0.0004797/0.166, allocations: 0.5184 MB / 0.6295 GB, free: 2.176 MB / 0.5886 GB Notification: Performance of NFConvertDAE.convert: time 0.001188/0.1672, allocations: 1.343 MB / 0.6308 GB, free: 0.8281 MB / 0.5886 GB Notification: Performance of FrontEnd - DAE generated: time 5.06e-06/0.1672, allocations: 7.984 kB / 0.6308 GB, free: 0.8203 MB / 0.5886 GB Notification: Performance of FrontEnd: time 1.553e-06/0.1672, allocations: 0 / 0.6308 GB, free: 0.8203 MB / 0.5886 GB Notification: Performance of Transformations before backend: time 1.156e-05/0.1672, allocations: 0 / 0.6308 GB, free: 0.8203 MB / 0.5886 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 248 * Number of variables: 248 Notification: Performance of Generate backend data structure: time 0.001365/0.1686, allocations: 1.429 MB / 0.6322 GB, free: 15.36 MB / 0.6042 GB Notification: Performance of prepare preOptimizeDAE: time 3.262e-05/0.1686, allocations: 8.031 kB / 0.6322 GB, free: 15.35 MB / 0.6042 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001075/0.1697, allocations: 408 kB / 0.6326 GB, free: 14.95 MB / 0.6042 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.000845/0.1705, allocations: 0.6798 MB / 0.6333 GB, free: 14.25 MB / 0.6042 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.222e-05/0.1706, allocations: 78.12 kB / 0.6333 GB, free: 14.17 MB / 0.6042 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001057/0.1707, allocations: 115.9 kB / 0.6334 GB, free: 14.05 MB / 0.6042 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0008219/0.1715, allocations: 1.06 MB / 0.6345 GB, free: 12.88 MB / 0.6042 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.062e-05/0.1715, allocations: 0 / 0.6345 GB, free: 12.88 MB / 0.6042 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.041e-05/0.1716, allocations: 43.94 kB / 0.6345 GB, free: 12.83 MB / 0.6042 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.698e-05/0.1716, allocations: 41.98 kB / 0.6346 GB, free: 12.79 MB / 0.6042 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0003783/0.172, allocations: 273.8 kB / 0.6348 GB, free: 12.52 MB / 0.6042 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 0.002643/0.1747, allocations: 2.063 MB / 0.6368 GB, free: 10.42 MB / 0.6042 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0003182/0.175, allocations: 331.2 kB / 0.6371 GB, free: 10.09 MB / 0.6042 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0001209/0.1751, allocations: 113.7 kB / 0.6373 GB, free: 9.969 MB / 0.6042 GB Notification: Performance of preOpt evalFunc (simulation): time 8.798e-05/0.1752, allocations: 32.48 kB / 0.6373 GB, free: 9.938 MB / 0.6042 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.713e-05/0.1752, allocations: 47.05 kB / 0.6373 GB, free: 9.883 MB / 0.6042 GB Notification: Performance of pre-optimization done (n=53): time 1.904e-06/0.1752, allocations: 0 / 0.6373 GB, free: 9.883 MB / 0.6042 GB Notification: Performance of matching and sorting (n=55): time 0.001311/0.1765, allocations: 0.8521 MB / 0.6382 GB, free: 8.988 MB / 0.6042 GB Notification: Performance of inlineWhenForInitialization (initialization): time 2.457e-05/0.1765, allocations: 63.84 kB / 0.6382 GB, free: 8.914 MB / 0.6042 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0003457/0.1769, allocations: 0.5661 MB / 0.6388 GB, free: 8.336 MB / 0.6042 GB Notification: Performance of collectPreVariables (initialization): time 3.831e-05/0.1769, allocations: 37.7 kB / 0.6388 GB, free: 8.293 MB / 0.6042 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004239/0.1774, allocations: 457.8 kB / 0.6393 GB, free: 7.84 MB / 0.6042 GB Notification: Performance of collectInitialBindings (initialization): time 0.000105/0.1775, allocations: 210.2 kB / 0.6395 GB, free: 7.633 MB / 0.6042 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001285/0.1776, allocations: 122.5 kB / 0.6396 GB, free: 7.504 MB / 0.6042 GB Notification: Performance of setup shared object (initialization): time 0.0001041/0.1777, allocations: 390.6 kB / 0.6399 GB, free: 7.113 MB / 0.6042 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000105/0.1778, allocations: 80.78 kB / 0.64 GB, free: 7.035 MB / 0.6042 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0001714/0.178, allocations: 264.5 kB / 0.6403 GB, free: 6.719 MB / 0.6042 GB Warning: It was not possible to determine if the initialization problem is consistent, because of not evaluable parameters/start values during compile time: volDyn.dynBal.medium.p = volDyn.dynBal.p_start (bou.p = volDyn.dynBal.p_start) Notification: Performance of analyzeInitialSystem (initialization): time 0.0005383/0.1785, allocations: 0.5215 MB / 0.6408 GB, free: 6.148 MB / 0.6042 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.944e-06/0.1785, allocations: 0 / 0.6408 GB, free: 6.148 MB / 0.6042 GB Notification: Performance of matching and sorting (n=84) (initialization): time 0.0004131/0.1789, allocations: 405.2 kB / 0.6412 GB, free: 5.734 MB / 0.6042 GB Notification: Performance of prepare postOptimizeDAE: time 1.335e-05/0.1789, allocations: 8 kB / 0.6412 GB, free: 5.727 MB / 0.6042 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.333e-06/0.1789, allocations: 7.938 kB / 0.6412 GB, free: 5.719 MB / 0.6042 GB Notification: Performance of postOpt tearingSystem (initialization): time 8.963e-05/0.179, allocations: 60.14 kB / 0.6412 GB, free: 5.648 MB / 0.6042 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003242/0.1794, allocations: 143.8 kB / 0.6414 GB, free: 5.508 MB / 0.6042 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001511/0.1809, allocations: 3.611 MB / 0.6449 GB, free: 1.605 MB / 0.6042 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002821/0.1812, allocations: 20 kB / 0.6449 GB, free: 1.586 MB / 0.6042 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.472e-05/0.1812, allocations: 20 kB / 0.6449 GB, free: 1.566 MB / 0.6042 GB Warning: The initial conditions are over specified. The following 1 initial equations are redundant, so they are removed from the initialization system: volDyn.dynBal.medium.p = volDyn.dynBal.p_start. Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 17 * 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 (80): * Single equations (assignments): 77 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 3 * 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): 3 systems {(1,1), (1,1), (1,2)} Notification: Performance of prepare postOptimizeDAE: time 0.0001684/0.1814, allocations: 160.5 kB / 0.6451 GB, free: 1.398 MB / 0.6042 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 8.391e-05/0.1814, allocations: 71.92 kB / 0.6452 GB, free: 1.328 MB / 0.6042 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 7.715e-05/0.1815, allocations: 99.72 kB / 0.6453 GB, free: 1.219 MB / 0.6042 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.675e-06/0.1815, allocations: 8.062 kB / 0.6453 GB, free: 1.211 MB / 0.6042 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.645e-06/0.1815, allocations: 3.938 kB / 0.6453 GB, free: 1.207 MB / 0.6042 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0002721/0.1818, allocations: 382.1 kB / 0.6456 GB, free: 0.7852 MB / 0.6042 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001324/0.1831, allocations: 1.047 MB / 0.6467 GB, free: 15.66 MB / 0.6198 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.178e-06/0.1831, allocations: 8 kB / 0.6467 GB, free: 15.65 MB / 0.6198 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002983/0.1834, allocations: 127.9 kB / 0.6468 GB, free: 15.52 MB / 0.6198 GB Notification: Performance of postOpt tearingSystem (simulation): time 4.643e-05/0.1835, allocations: 27.62 kB / 0.6468 GB, free: 15.49 MB / 0.6198 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.414e-05/0.1835, allocations: 19.98 kB / 0.6468 GB, free: 15.47 MB / 0.6198 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0005334/0.184, allocations: 1.24 MB / 0.648 GB, free: 14.13 MB / 0.6198 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.423e-06/0.184, allocations: 4 kB / 0.648 GB, free: 14.13 MB / 0.6198 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.000497/0.1845, allocations: 0.6153 MB / 0.6486 GB, free: 13.45 MB / 0.6198 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001687/0.1847, allocations: 119.4 kB / 0.6488 GB, free: 13.33 MB / 0.6198 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 6.014e-05/0.1847, allocations: 19.92 kB / 0.6488 GB, free: 13.31 MB / 0.6198 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0002727/0.185, allocations: 31.44 kB / 0.6488 GB, free: 13.28 MB / 0.6198 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 5.973e-05/0.1851, allocations: 39.88 kB / 0.6488 GB, free: 13.24 MB / 0.6198 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.266e-05/0.1851, allocations: 32 kB / 0.6489 GB, free: 13.21 MB / 0.6198 GB Notification: Performance of sorting global known variables: time 0.000181/0.1853, allocations: 268.5 kB / 0.6491 GB, free: 12.95 MB / 0.6198 GB Notification: Performance of sort global known variables: time 6e-08/0.1853, allocations: 0 / 0.6491 GB, free: 12.95 MB / 0.6198 GB Notification: Performance of remove unused functions: time 0.0004858/0.1858, allocations: 307.9 kB / 0.6494 GB, free: 12.65 MB / 0.6198 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 14 * Number of states: 3 (volDyn.dynBal.medium.Xi[1],volDyn.dynBal.U,volDyn.dynBal.mC[1]) * 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 (53): * Single equations (assignments): 52 * 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 {(1,2)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0001933/0.186, allocations: 136.2 kB / 0.6496 GB, free: 12.51 MB / 0.6198 GB Notification: Performance of simCode: created initialization part: time 0.0005131/0.1865, allocations: 0.6297 MB / 0.6502 GB, free: 11.85 MB / 0.6198 GB Notification: Performance of simCode: created event and clocks part: time 1.212e-05/0.1865, allocations: 12 kB / 0.6502 GB, free: 11.84 MB / 0.6198 GB Notification: Performance of simCode: created simulation system equations: time 0.0001871/0.1867, allocations: 262.1 kB / 0.6504 GB, free: 11.57 MB / 0.6198 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001114/0.1878, allocations: 0.5556 MB / 0.651 GB, free: 11.03 MB / 0.6198 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001799/0.1896, allocations: 1.772 MB / 0.6527 GB, free: 9.18 MB / 0.6198 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004109/0.19, allocations: 276.6 kB / 0.653 GB, free: 8.891 MB / 0.6198 GB Notification: Performance of simCode: alias equations: time 0.0003921/0.1904, allocations: 135 kB / 0.6531 GB, free: 8.754 MB / 0.6198 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0007491/0.1912, allocations: 417 kB / 0.6535 GB, free: 8.34 MB / 0.6198 GB Notification: Performance of SimCode: time 5.91e-07/0.1912, allocations: 0 / 0.6535 GB, free: 8.34 MB / 0.6198 GB Notification: Performance of Templates: time 0.02205/0.2132, allocations: 21.24 MB / 0.6742 GB, free: 3.699 MB / 0.6355 GB " [Timeout remaining time 660] make -j1 -f IDEAS_IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstanceReverseFlow.makefile [Timeout 660] (rm -f IDEAS_IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstanceReverseFlow.pipe ; mkfifo IDEAS_IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstanceReverseFlow.pipe ; head -c 1048576 < IDEAS_IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstanceReverseFlow.pipe >> ../files/IDEAS_IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstanceReverseFlow.sim & ./IDEAS_IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstanceReverseFlow -abortSlowSimulation -alarm=240 -lv LOG_STATS > IDEAS_IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstanceReverseFlow.pipe 2>&1) [Timeout 240] [Calling sys.exit(0), Time elapsed: 4.7519686901941895]