Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.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 0.003051/0.003051, allocations: 82.64 kB / 21.44 MB, free: 3.059 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 0.001188/0.001188, allocations: 171.8 kB / 24.84 MB, free: 9.254 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 1.006/1.006, allocations: 177.1 MB / 205.3 MB, free: 5.496 MB / 186.7 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA master/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA master/package.mo): time 0.6362/0.6362, allocations: 115 MB / 376.8 MB, free: 7.461 MB / 346.7 MB " [Timeout remaining time 179] Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 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(IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass") translateModel(IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass") [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 1.303e-06/1.303e-06, allocations: 4.812 kB / 482.8 MB, free: 11.74 MB / 410.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 1.635e-05/1.765e-05, allocations: 5.75 kB / 482.8 MB, free: 11.73 MB / 410.7 MB Notification: Performance of NFInst.instantiate(IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass): time 0.1432/0.1432, allocations: 146.1 MB / 0.6142 GB, free: 5.227 MB / 0.5261 GB Notification: Performance of NFInst.instExpressions: time 0.006367/0.1496, allocations: 4.42 MB / 0.6185 GB, free: 0.793 MB / 0.5261 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0005505/0.1501, allocations: 43.62 kB / 0.6185 GB, free: 0.75 MB / 0.5261 GB Notification: Performance of NFTyping.typeComponents: time 0.0005978/0.1507, allocations: 198.5 kB / 0.6187 GB, free: 0.5547 MB / 0.5261 GB Notification: Performance of NFTyping.typeBindings: time 0.001556/0.1523, allocations: 0.8158 MB / 0.6195 GB, free: 15.73 MB / 0.5417 GB Notification: Performance of NFTyping.typeClassSections: time 0.002108/0.1544, allocations: 0.9345 MB / 0.6204 GB, free: 14.8 MB / 0.5417 GB Notification: Performance of NFFlatten.flatten: time 0.001958/0.1564, allocations: 1.665 MB / 0.622 GB, free: 13.12 MB / 0.5417 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0006096/0.157, allocations: 410.1 kB / 0.6224 GB, free: 12.73 MB / 0.5417 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001618/0.1586, allocations: 0.8954 MB / 0.6233 GB, free: 11.84 MB / 0.5417 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0007409/0.1593, allocations: 458.6 kB / 0.6237 GB, free: 11.39 MB / 0.5417 GB Notification: Performance of NFPackage.collectConstants: time 9.689e-05/0.1594, allocations: 52 kB / 0.6238 GB, free: 11.34 MB / 0.5417 GB Notification: Performance of NFFlatten.collectFunctions: time 0.00104/0.1605, allocations: 0.5611 MB / 0.6243 GB, free: 10.78 MB / 0.5417 GB Notification: Performance of NFScalarize.scalarize: time 0.0002578/0.1607, allocations: 251.3 kB / 0.6246 GB, free: 10.54 MB / 0.5417 GB Notification: Performance of NFVerifyModel.verify: time 0.0003126/0.161, allocations: 263.4 kB / 0.6248 GB, free: 10.28 MB / 0.5417 GB Notification: Performance of NFConvertDAE.convert: time 0.001076/0.1621, allocations: 0.8293 MB / 0.6256 GB, free: 9.445 MB / 0.5417 GB Notification: Performance of FrontEnd - DAE generated: time 4.429e-06/0.1621, allocations: 4 kB / 0.6256 GB, free: 9.441 MB / 0.5417 GB Notification: Performance of FrontEnd: time 1.072e-06/0.1621, allocations: 0 / 0.6256 GB, free: 9.441 MB / 0.5417 GB Notification: Performance of Transformations before backend: time 1.057e-05/0.1621, allocations: 0 / 0.6256 GB, free: 9.441 MB / 0.5417 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 104 * Number of variables: 104 Notification: Performance of Generate backend data structure: time 0.001209/0.1633, allocations: 1.04 MB / 0.6267 GB, free: 8.363 MB / 0.5417 GB Notification: Performance of prepare preOptimizeDAE: time 3.261e-05/0.1634, allocations: 8.031 kB / 0.6267 GB, free: 8.355 MB / 0.5417 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0007647/0.1641, allocations: 223.5 kB / 0.6269 GB, free: 8.137 MB / 0.5417 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0007496/0.1649, allocations: 0.5014 MB / 0.6274 GB, free: 7.609 MB / 0.5417 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.626e-05/0.1649, allocations: 37 kB / 0.6274 GB, free: 7.574 MB / 0.5417 GB Notification: Performance of preOpt expandDerOperator (simulation): time 7.611e-05/0.165, allocations: 48 kB / 0.6275 GB, free: 7.527 MB / 0.5417 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0005079/0.1655, allocations: 362 kB / 0.6278 GB, free: 7.141 MB / 0.5417 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.432e-05/0.1655, allocations: 0 / 0.6278 GB, free: 7.141 MB / 0.5417 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 3.937e-05/0.1656, allocations: 20 kB / 0.6278 GB, free: 7.121 MB / 0.5417 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.893e-05/0.1656, allocations: 17 kB / 0.6278 GB, free: 7.102 MB / 0.5417 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0002688/0.1659, allocations: 134.9 kB / 0.628 GB, free: 6.969 MB / 0.5417 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 0.002037/0.1679, allocations: 1.252 MB / 0.6292 GB, free: 5.676 MB / 0.5417 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0002364/0.1681, allocations: 146.1 kB / 0.6293 GB, free: 5.523 MB / 0.5417 GB Notification: Performance of preOpt resolveLoops (simulation): time 9.835e-05/0.1682, allocations: 79.62 kB / 0.6294 GB, free: 5.441 MB / 0.5417 GB Notification: Performance of preOpt evalFunc (simulation): time 8.964e-05/0.1683, allocations: 23.98 kB / 0.6294 GB, free: 5.418 MB / 0.5417 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.679e-05/0.1683, allocations: 45.33 kB / 0.6295 GB, free: 5.363 MB / 0.5417 GB Notification: Performance of pre-optimization done (n=30): time 1.733e-06/0.1683, allocations: 3.938 kB / 0.6295 GB, free: 5.359 MB / 0.5417 GB Notification: Performance of matching and sorting (n=30): time 0.0007736/0.1691, allocations: 322.4 kB / 0.6298 GB, free: 5.035 MB / 0.5417 GB Notification: Performance of inlineWhenForInitialization (initialization): time 2.761e-05/0.1691, allocations: 59.34 kB / 0.6298 GB, free: 4.965 MB / 0.5417 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0003457/0.1695, allocations: 470.4 kB / 0.6303 GB, free: 4.488 MB / 0.5417 GB Notification: Performance of collectPreVariables (initialization): time 3.042e-05/0.1695, allocations: 29.7 kB / 0.6303 GB, free: 4.453 MB / 0.5417 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001978/0.1697, allocations: 351.1 kB / 0.6306 GB, free: 4.102 MB / 0.5417 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002279/0.1699, allocations: 115 kB / 0.6308 GB, free: 3.988 MB / 0.5417 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001286/0.1701, allocations: 91.64 kB / 0.6308 GB, free: 3.891 MB / 0.5417 GB Notification: Performance of setup shared object (initialization): time 0.0002002/0.1703, allocations: 0.5429 MB / 0.6314 GB, free: 3.336 MB / 0.5417 GB Notification: Performance of preBalanceInitialSystem (initialization): time 9.124e-05/0.1704, allocations: 45.16 kB / 0.6314 GB, free: 3.289 MB / 0.5417 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002418/0.1706, allocations: 344.4 kB / 0.6317 GB, free: 2.852 MB / 0.5417 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0002917/0.1709, allocations: 259 kB / 0.632 GB, free: 2.535 MB / 0.5417 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.316e-06/0.1709, allocations: 0 / 0.632 GB, free: 2.535 MB / 0.5417 GB Notification: Performance of matching and sorting (n=46) (initialization): time 0.0004374/0.1713, allocations: 289.2 kB / 0.6323 GB, free: 2.246 MB / 0.5417 GB Notification: Performance of prepare postOptimizeDAE: time 1.746e-05/0.1714, allocations: 8 kB / 0.6323 GB, free: 2.238 MB / 0.5417 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.945e-06/0.1714, allocations: 4 kB / 0.6323 GB, free: 2.234 MB / 0.5417 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.427e-05/0.1714, allocations: 4 kB / 0.6323 GB, free: 2.23 MB / 0.5417 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002743/0.1717, allocations: 79.91 kB / 0.6324 GB, free: 2.152 MB / 0.5417 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.156e-05/0.1717, allocations: 15.92 kB / 0.6324 GB, free: 2.137 MB / 0.5417 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003023/0.172, allocations: 31.78 kB / 0.6324 GB, free: 2.105 MB / 0.5417 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.244e-05/0.172, allocations: 15.94 kB / 0.6324 GB, free: 2.09 MB / 0.5417 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0001734/0.1722, allocations: 190.8 kB / 0.6326 GB, free: 1.898 MB / 0.5417 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0002148/0.1724, allocations: 335.1 kB / 0.6329 GB, free: 1.469 MB / 0.5417 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0002692/0.1727, allocations: 263.2 kB / 0.6332 GB, free: 1.148 MB / 0.5417 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.914e-06/0.1727, allocations: 0 / 0.6332 GB, free: 1.148 MB / 0.5417 GB Notification: Performance of matching and sorting (n=46) (initialization_lambda0): time 0.0004071/0.1731, allocations: 289.3 kB / 0.6335 GB, free: 0.8594 MB / 0.5417 GB Notification: Performance of prepare postOptimizeDAE: time 1.137e-05/0.1731, allocations: 10.66 kB / 0.6335 GB, free: 0.8516 MB / 0.5417 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.699e-06/0.1731, allocations: 4 kB / 0.6335 GB, free: 0.8477 MB / 0.5417 GB Notification: Performance of postOpt tearingSystem (initialization): time 6.141e-06/0.1731, allocations: 4 kB / 0.6335 GB, free: 0.8438 MB / 0.5417 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002307/0.1733, allocations: 83.84 kB / 0.6335 GB, free: 0.7617 MB / 0.5417 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 7.674e-06/0.1733, allocations: 11.98 kB / 0.6336 GB, free: 0.75 MB / 0.5417 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002408/0.1736, allocations: 27.78 kB / 0.6336 GB, free: 0.7227 MB / 0.5417 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.495e-05/0.1736, allocations: 16 kB / 0.6336 GB, free: 0.707 MB / 0.5417 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 15 * 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 (46): * Single equations (assignments): 46 * 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 0.0001205/0.1737, allocations: 295.9 kB / 0.6339 GB, free: 420 kB / 0.5417 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002577/0.174, allocations: 67.73 kB / 0.6339 GB, free: 352 kB / 0.5417 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.000369/0.1743, allocations: 235.2 kB / 0.6342 GB, free: 108 kB / 0.5417 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.113e-06/0.1743, allocations: 15.86 kB / 0.6342 GB, free: 92 kB / 0.5417 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.735e-06/0.1743, allocations: 0 / 0.6342 GB, free: 92 kB / 0.5417 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0002857/0.1746, allocations: 273.3 kB / 0.6344 GB, free: 15.79 MB / 0.5573 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0009071/0.1755, allocations: 0.7673 MB / 0.6352 GB, free: 14.96 MB / 0.5573 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.866e-06/0.1755, allocations: 0 / 0.6352 GB, free: 14.96 MB / 0.5573 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001752/0.1757, allocations: 55.91 kB / 0.6353 GB, free: 14.9 MB / 0.5573 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0001873/0.1759, allocations: 47.88 kB / 0.6353 GB, free: 14.85 MB / 0.5573 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.146e-05/0.1759, allocations: 11.98 kB / 0.6353 GB, free: 14.84 MB / 0.5573 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0009378/0.1769, allocations: 1.772 MB / 0.637 GB, free: 12.96 MB / 0.5573 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.973e-06/0.1769, allocations: 0 / 0.637 GB, free: 12.96 MB / 0.5573 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0005707/0.1774, allocations: 497.3 kB / 0.6375 GB, free: 12.42 MB / 0.5573 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001461/0.1776, allocations: 87.62 kB / 0.6376 GB, free: 12.33 MB / 0.5573 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 5.35e-05/0.1776, allocations: 12.12 kB / 0.6376 GB, free: 12.32 MB / 0.5573 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0002612/0.1779, allocations: 8 kB / 0.6376 GB, free: 12.31 MB / 0.5573 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.246e-05/0.178, allocations: 39.81 kB / 0.6377 GB, free: 12.27 MB / 0.5573 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.214e-05/0.178, allocations: 12 kB / 0.6377 GB, free: 12.26 MB / 0.5573 GB Notification: Performance of sorting global known variables: time 0.0002089/0.1782, allocations: 290.7 kB / 0.6379 GB, free: 11.98 MB / 0.5573 GB Notification: Performance of sort global known variables: time 1e-07/0.1782, allocations: 0 / 0.6379 GB, free: 11.98 MB / 0.5573 GB Notification: Performance of remove unused functions: time 0.0007951/0.179, allocations: 323.3 kB / 0.6382 GB, free: 11.66 MB / 0.5573 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * Number of states: 2 (vol.dynBal.medium.Xi[1],vol.dynBal.U) * 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 (28): * Single equations (assignments): 27 * 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 {(1,2,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0002486/0.1792, allocations: 154.6 kB / 0.6384 GB, free: 11.51 MB / 0.5573 GB Notification: Performance of simCode: created initialization part: time 0.0004757/0.1797, allocations: 293.8 kB / 0.6387 GB, free: 11.21 MB / 0.5573 GB Notification: Performance of simCode: created event and clocks part: time 3.115e-06/0.1797, allocations: 4 kB / 0.6387 GB, free: 11.21 MB / 0.5573 GB Notification: Performance of simCode: created simulation system equations: time 0.0003133/0.18, allocations: 269.3 kB / 0.6389 GB, free: 10.93 MB / 0.5573 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001044/0.1811, allocations: 282 kB / 0.6392 GB, free: 10.66 MB / 0.5573 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001665/0.1827, allocations: 1.003 MB / 0.6402 GB, free: 9.586 MB / 0.5573 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0001342/0.1829, allocations: 153.7 kB / 0.6403 GB, free: 9.414 MB / 0.5573 GB Notification: Performance of simCode: alias equations: time 0.0003368/0.1832, allocations: 76.53 kB / 0.6404 GB, free: 9.34 MB / 0.5573 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0005143/0.1837, allocations: 282 kB / 0.6407 GB, free: 9.062 MB / 0.5573 GB Notification: Performance of SimCode: time 1.152e-06/0.1837, allocations: 0 / 0.6407 GB, free: 9.062 MB / 0.5573 GB Notification: Performance of Templates: time 0.2463/0.43, allocations: 11.15 MB / 0.6516 GB, free: 41.89 MB / 0.5573 GB " [Timeout remaining time 660] make -j1 -f IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.makefile [Timeout 660] (rm -f IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.pipe ; mkfifo IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.pipe >> ../files/IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.sim & ./IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass -abortSlowSimulation -alarm=240 -lv LOG_STATS > IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.pipe 2>&1) [Timeout 240] [Calling sys.exit(0), Time elapsed: 4.129282769281417]