Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Fluid.HeatPumps.ModularReversible.Validation.Comparative.Carnot_y.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 0.001118/0.001118, allocations: 92.22 kB / 20.43 MB, free: 4.141 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 0.001036/0.001036, allocations: 165 kB / 23.8 MB, free: 0.7695 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 1.054/1.054, allocations: 177.1 MB / 204.2 MB, free: 5.648 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 0.6442/0.6442, allocations: 115 MB / 375.7 MB, free: 7.668 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.HeatPumps.ModularReversible.Validation.Comparative.Carnot_y,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.HeatPumps.ModularReversible.Validation.Comparative.Carnot_y") translateModel(IBPSA.Fluid.HeatPumps.ModularReversible.Validation.Comparative.Carnot_y,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.HeatPumps.ModularReversible.Validation.Comparative.Carnot_y") [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 3.757e-06/3.757e-06, allocations: 0 / 481.6 MB, free: 11.86 MB / 410.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 6.436e-05/6.812e-05, allocations: 4.984 kB / 481.6 MB, free: 11.86 MB / 410.7 MB Notification: Performance of NFInst.instantiate(IBPSA.Fluid.HeatPumps.ModularReversible.Validation.Comparative.Carnot_y): time 0.02834/0.02841, allocations: 22.26 MB / 0.492 GB, free: 13.09 MB / 426.7 MB Notification: Performance of NFInst.instExpressions: time 0.0193/0.04771, allocations: 8.499 MB / 0.5003 GB, free: 7.293 MB / 426.7 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.003168/0.05088, allocations: 97.41 kB / 0.5004 GB, free: 7.242 MB / 426.7 MB Notification: Performance of NFTyping.typeComponents: time 0.001464/0.05234, allocations: 492.1 kB / 0.5009 GB, free: 6.98 MB / 426.7 MB Notification: Performance of NFTyping.typeBindings: time 0.00523/0.05757, allocations: 1.996 MB / 0.5028 GB, free: 5.535 MB / 426.7 MB Notification: Performance of NFTyping.typeClassSections: time 0.004208/0.06178, allocations: 1.674 MB / 0.5045 GB, free: 4.227 MB / 426.7 MB Notification: Performance of NFFlatten.flatten: time 0.006106/0.06788, allocations: 4.519 MB / 0.5089 GB, free: 152 kB / 426.7 MB Notification: Performance of NFFlatten.resolveConnections: time 0.00238/0.07026, allocations: 1.154 MB / 0.51 GB, free: 15.08 MB / 442.7 MB Notification: Performance of NFEvalConstants.evaluate: time 0.004229/0.07449, allocations: 2.049 MB / 0.512 GB, free: 13.25 MB / 442.7 MB Notification: Performance of NFSimplifyModel.simplify: time 0.001857/0.07635, allocations: 1.08 MB / 0.5131 GB, free: 12.17 MB / 442.7 MB Notification: Performance of NFPackage.collectConstants: time 0.0003678/0.07672, allocations: 168 kB / 0.5132 GB, free: 12 MB / 442.7 MB Notification: Performance of NFFlatten.collectFunctions: time 0.00202/0.07874, allocations: 0.8269 MB / 0.514 GB, free: 11.18 MB / 442.7 MB Notification: Performance of NFScalarize.scalarize: time 0.0003645/0.0791, allocations: 443 kB / 0.5144 GB, free: 10.74 MB / 442.7 MB Notification: Performance of NFVerifyModel.verify: time 0.0008323/0.07993, allocations: 0.643 MB / 0.5151 GB, free: 10.1 MB / 442.7 MB Notification: Performance of NFConvertDAE.convert: time 0.002595/0.08253, allocations: 1.812 MB / 0.5168 GB, free: 8.281 MB / 442.7 MB Notification: Performance of FrontEnd - DAE generated: time 7.153e-06/0.08254, allocations: 4 kB / 0.5168 GB, free: 8.277 MB / 442.7 MB Notification: Performance of FrontEnd: time 4.208e-06/0.08254, allocations: 3.984 kB / 0.5168 GB, free: 8.273 MB / 442.7 MB Notification: Performance of Transformations before backend: time 2.947e-05/0.08257, allocations: 0 / 0.5168 GB, free: 8.273 MB / 442.7 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 240 * Number of variables: 240 Notification: Performance of Generate backend data structure: time 0.002991/0.08556, allocations: 2.193 MB / 0.519 GB, free: 6.027 MB / 442.7 MB Notification: Performance of prepare preOptimizeDAE: time 4.972e-05/0.08561, allocations: 12.03 kB / 0.519 GB, free: 6.016 MB / 442.7 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0005511/0.08616, allocations: 333 kB / 0.5193 GB, free: 5.691 MB / 442.7 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001936/0.0881, allocations: 1.621 MB / 0.5209 GB, free: 4.039 MB / 442.7 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.328e-05/0.08815, allocations: 78 kB / 0.521 GB, free: 3.961 MB / 442.7 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001277/0.08828, allocations: 112.6 kB / 0.5211 GB, free: 3.852 MB / 442.7 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001091/0.08937, allocations: 0.9216 MB / 0.522 GB, free: 2.852 MB / 442.7 MB Notification: Performance of preOpt findStateOrder (simulation): time 2.501e-05/0.08939, allocations: 10.55 kB / 0.522 GB, free: 2.844 MB / 442.7 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.546e-05/0.08946, allocations: 43.98 kB / 0.522 GB, free: 2.801 MB / 442.7 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.178e-05/0.0895, allocations: 24 kB / 0.5221 GB, free: 2.777 MB / 442.7 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0006856/0.09019, allocations: 387.6 kB / 0.5224 GB, free: 2.398 MB / 442.7 MB 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 0.003759/0.09395, allocations: 3.821 MB / 0.5262 GB, free: 14.5 MB / 458.7 MB Notification: Performance of preOpt comSubExp (simulation): time 0.0006627/0.09461, allocations: 347.5 kB / 0.5265 GB, free: 14.15 MB / 458.7 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002177/0.09483, allocations: 157.1 kB / 0.5266 GB, free: 13.99 MB / 458.7 MB Notification: Performance of preOpt evalFunc (simulation): time 0.000173/0.095, allocations: 60.41 kB / 0.5267 GB, free: 13.93 MB / 458.7 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.486e-05/0.09503, allocations: 41.89 kB / 0.5267 GB, free: 13.88 MB / 458.7 MB Notification: Performance of pre-optimization done (n=61): time 2.023e-06/0.09504, allocations: 4 kB / 0.5267 GB, free: 13.88 MB / 458.7 MB Notification: Performance of matching and sorting (n=61): time 0.002488/0.09752, allocations: 1.011 MB / 0.5277 GB, free: 12.86 MB / 458.7 MB Notification: Performance of inlineWhenForInitialization (initialization): time 4.111e-05/0.09757, allocations: 55.91 kB / 0.5278 GB, free: 12.79 MB / 458.7 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0009367/0.0985, allocations: 1.041 MB / 0.5288 GB, free: 11.75 MB / 458.7 MB Notification: Performance of collectPreVariables (initialization): time 5.259e-05/0.09855, allocations: 41.7 kB / 0.5288 GB, free: 11.7 MB / 458.7 MB Notification: Performance of collectInitialEqns (initialization): time 0.0004193/0.09897, allocations: 0.7077 MB / 0.5295 GB, free: 10.98 MB / 458.7 MB Notification: Performance of collectInitialBindings (initialization): time 0.000135/0.09911, allocations: 226 kB / 0.5297 GB, free: 10.76 MB / 458.7 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001812/0.09929, allocations: 196.2 kB / 0.5299 GB, free: 10.56 MB / 458.7 MB Notification: Performance of setup shared object (initialization): time 0.0001502/0.09944, allocations: 0.5043 MB / 0.5304 GB, free: 10.05 MB / 458.7 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002122/0.09965, allocations: 127.6 kB / 0.5305 GB, free: 9.922 MB / 458.7 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0007882/0.1004, allocations: 0.9653 MB / 0.5315 GB, free: 8.672 MB / 458.7 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.0006008/0.101, allocations: 0.6335 MB / 0.5321 GB, free: 7.887 MB / 458.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.632e-06/0.101, allocations: 4 kB / 0.5321 GB, free: 7.883 MB / 458.7 MB Notification: Performance of matching and sorting (n=104) (initialization): time 0.001666/0.1027, allocations: 0.937 MB / 0.533 GB, free: 6.934 MB / 458.7 MB Notification: Performance of prepare postOptimizeDAE: time 2.395e-05/0.1027, allocations: 8 kB / 0.533 GB, free: 6.926 MB / 458.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.13e-05/0.1027, allocations: 8 kB / 0.533 GB, free: 6.918 MB / 458.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.001458/0.1042, allocations: 439.6 kB / 0.5335 GB, free: 6.484 MB / 458.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003532/0.1046, allocations: 183.7 kB / 0.5336 GB, free: 6.305 MB / 458.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0005256/0.1051, allocations: 0.9091 MB / 0.5345 GB, free: 5.363 MB / 458.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003748/0.1055, allocations: 91.44 kB / 0.5346 GB, free: 5.273 MB / 458.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.254e-05/0.1055, allocations: 39.98 kB / 0.5347 GB, free: 5.234 MB / 458.7 MB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0003407/0.1059, allocations: 256.8 kB / 0.5349 GB, free: 4.977 MB / 458.7 MB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0005657/0.1064, allocations: 0.9692 MB / 0.5358 GB, free: 3.719 MB / 458.7 MB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0006036/0.107, allocations: 0.6257 MB / 0.5365 GB, free: 2.941 MB / 458.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 5.66e-06/0.107, allocations: 7.984 kB / 0.5365 GB, free: 2.934 MB / 458.7 MB Notification: Performance of matching and sorting (n=104) (initialization_lambda0): time 0.001873/0.1089, allocations: 0.9333 MB / 0.5374 GB, free: 1.988 MB / 458.7 MB Notification: Performance of prepare postOptimizeDAE: time 1.376e-05/0.1089, allocations: 8 kB / 0.5374 GB, free: 1.98 MB / 458.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.056e-06/0.1089, allocations: 8 kB / 0.5374 GB, free: 1.973 MB / 458.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.001324/0.1102, allocations: 438.6 kB / 0.5378 GB, free: 1.543 MB / 458.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003417/0.1106, allocations: 179.7 kB / 0.538 GB, free: 1.367 MB / 458.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0004435/0.111, allocations: 0.9091 MB / 0.5389 GB, free: 436 kB / 458.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003522/0.1114, allocations: 87.59 kB / 0.5389 GB, free: 348 kB / 458.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.923e-05/0.1114, allocations: 36 kB / 0.539 GB, free: 312 kB / 458.7 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 36 * 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 (94): * Single equations (assignments): 93 * 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 {(1,10)} Notification: Performance of prepare postOptimizeDAE: time 0.0001951/0.1116, allocations: 331.9 kB / 0.5393 GB, free: 15.97 MB / 474.7 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001522/0.1118, allocations: 159 kB / 0.5395 GB, free: 15.81 MB / 474.7 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001569/0.1134, allocations: 0.8299 MB / 0.5403 GB, free: 14.97 MB / 474.7 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.516e-06/0.1134, allocations: 8 kB / 0.5403 GB, free: 14.96 MB / 474.7 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.919e-06/0.1134, allocations: 3.938 kB / 0.5403 GB, free: 14.96 MB / 474.7 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001235/0.1146, allocations: 0.6518 MB / 0.5409 GB, free: 14.27 MB / 474.7 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002556/0.1172, allocations: 1.877 MB / 0.5427 GB, free: 12.29 MB / 474.7 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.761e-06/0.1172, allocations: 4 kB / 0.5427 GB, free: 12.29 MB / 474.7 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002363/0.1174, allocations: 107.8 kB / 0.5428 GB, free: 12.18 MB / 474.7 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.001274/0.1187, allocations: 423.7 kB / 0.5433 GB, free: 11.77 MB / 474.7 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.807e-05/0.1187, allocations: 23.98 kB / 0.5433 GB, free: 11.74 MB / 474.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.002389/0.1211, allocations: 2.536 MB / 0.5458 GB, free: 9.09 MB / 474.7 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.819e-06/0.1211, allocations: 7.938 kB / 0.5458 GB, free: 9.082 MB / 474.7 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00169/0.1228, allocations: 1.108 MB / 0.5468 GB, free: 7.895 MB / 474.7 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0002848/0.1231, allocations: 234.8 kB / 0.5471 GB, free: 7.664 MB / 474.7 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.726e-05/0.1232, allocations: 24.02 kB / 0.5471 GB, free: 7.641 MB / 474.7 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003018/0.1235, allocations: 31.98 kB / 0.5471 GB, free: 7.609 MB / 474.7 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001064/0.1236, allocations: 68.27 kB / 0.5472 GB, free: 7.543 MB / 474.7 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.89e-05/0.1236, allocations: 27.98 kB / 0.5472 GB, free: 7.516 MB / 474.7 MB Notification: Performance of sorting global known variables: time 0.0006032/0.1242, allocations: 0.6454 MB / 0.5478 GB, free: 6.867 MB / 474.7 MB Notification: Performance of sort global known variables: time 7e-08/0.1242, allocations: 0 / 0.5478 GB, free: 6.867 MB / 474.7 MB Notification: Performance of remove unused functions: time 0.001294/0.1255, allocations: 0.7288 MB / 0.5486 GB, free: 6.137 MB / 474.7 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 15 * Number of states: 2 (heaPum.con.vol.dynBal.U,heaPum.eva.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 (55): * Single equations (assignments): 50 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 4 * 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 {(1,10)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0004792/0.126, allocations: 298.7 kB / 0.5488 GB, free: 5.836 MB / 474.7 MB Notification: Performance of simCode: created initialization part: time 0.001146/0.1271, allocations: 0.7191 MB / 0.5495 GB, free: 5.109 MB / 474.7 MB Notification: Performance of simCode: created event and clocks part: time 3.085e-06/0.1271, allocations: 0 / 0.5495 GB, free: 5.109 MB / 474.7 MB Notification: Performance of simCode: created simulation system equations: time 0.0005685/0.1277, allocations: 451.9 kB / 0.55 GB, free: 4.648 MB / 474.7 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001522/0.1292, allocations: 0.6456 MB / 0.5506 GB, free: 4.035 MB / 474.7 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003003/0.1322, allocations: 2.192 MB / 0.5527 GB, free: 1.734 MB / 474.7 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0001941/0.1324, allocations: 265.3 kB / 0.553 GB, free: 1.453 MB / 474.7 MB Notification: Performance of simCode: alias equations: time 0.000564/0.133, allocations: 275.3 kB / 0.5533 GB, free: 1.199 MB / 474.7 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.000169/0.1331, allocations: 104.5 kB / 0.5534 GB, free: 1.098 MB / 474.7 MB Notification: Performance of SimCode: time 1.272e-06/0.1331, allocations: 4 kB / 0.5534 GB, free: 1.094 MB / 474.7 MB Notification: Performance of Templates: time 0.03077/0.1639, allocations: 26.99 MB / 0.5797 GB, free: 6.738 MB / 0.4948 GB " [Timeout remaining time 660] make -j1 -f IBPSA_latest_IBPSA.Fluid.HeatPumps.ModularReversible.Validation.Comparative.Carnot_y.makefile [Timeout 660] (rm -f IBPSA_latest_IBPSA.Fluid.HeatPumps.ModularReversible.Validation.Comparative.Carnot_y.pipe ; mkfifo IBPSA_latest_IBPSA.Fluid.HeatPumps.ModularReversible.Validation.Comparative.Carnot_y.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Fluid.HeatPumps.ModularReversible.Validation.Comparative.Carnot_y.pipe >> ../files/IBPSA_latest_IBPSA.Fluid.HeatPumps.ModularReversible.Validation.Comparative.Carnot_y.sim & ./IBPSA_latest_IBPSA.Fluid.HeatPumps.ModularReversible.Validation.Comparative.Carnot_y -abortSlowSimulation -alarm=240 -lv LOG_STATS > IBPSA_latest_IBPSA.Fluid.HeatPumps.ModularReversible.Validation.Comparative.Carnot_y.pipe 2>&1) [Timeout 240] [Calling sys.exit(0), Time elapsed: 4.709949762094766]