Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ThermofluidStream_ThermofluidStream.HeatExchangers.Tests.CrossFlowNTU_zeroMassFlow.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 0.001258/0.001258, allocations: 98.08 kB / 19.73 MB, free: 2.23 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 0.001378/0.001378, allocations: 217.1 kB / 23.04 MB, free: 5.074 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 1.387/1.387, allocations: 230.6 MB / 256.8 MB, free: 7.984 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermofluidStream 1.2.0/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermofluidStream 1.2.0/package.mo): time 0.742/0.742, allocations: 94.56 MB / 407.8 MB, free: 9.168 MB / 318.1 MB " [Timeout remaining time 179] Using package ThermofluidStream with version 1.2.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermofluidStream 1.2.0/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: "" <> buildModelFMU(ThermofluidStream.HeatExchangers.Tests.CrossFlowNTU_zeroMassFlow,fileNamePrefix="ThermofluidStream_ThermofluidStream_HeatExchangers_Tests_CrossFlowNTU_zeroMassFlow",fmuType="cs",version="2.0",platforms={"static"}) "" <> buildModelFMU(ThermofluidStream.HeatExchangers.Tests.CrossFlowNTU_zeroMassFlow,fileNamePrefix="ThermofluidStream_ThermofluidStream_HeatExchangers_Tests_CrossFlowNTU_zeroMassFlow",fmuType="cs",version="2.0",platforms={"static"}) [Timeout 660] "Notification: ThermofluidStream 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: ThermofluidStream requested package Complex of version 4.0.0. Complex 4.1.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.002326/0.002326, allocations: 83.27 kB / 0.5557 GB, free: 38.7 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1084/0.1107, allocations: 73.05 MB / 0.6271 GB, free: 472 kB / 462.1 MB Notification: Performance of NFInst.instantiate(ThermofluidStream.HeatExchangers.Tests.CrossFlowNTU_zeroMassFlow): time 0.5189/0.6296, allocations: 203.1 MB / 0.8254 GB, free: 11.96 MB / 0.5919 GB Notification: Performance of NFInst.instExpressions: time 0.01429/0.6439, allocations: 15.02 MB / 0.8401 GB, free: 7.512 MB / 0.5919 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001206/0.6451, allocations: 64.47 kB / 0.8401 GB, free: 7.473 MB / 0.5919 GB Notification: Performance of NFTyping.typeComponents: time 0.001403/0.6465, allocations: 0.522 MB / 0.8406 GB, free: 7.137 MB / 0.5919 GB Notification: Performance of NFTyping.typeBindings: time 0.003864/0.6504, allocations: 1.38 MB / 0.842 GB, free: 6.281 MB / 0.5919 GB Notification: Performance of NFTyping.typeClassSections: time 0.003704/0.6541, allocations: 1.408 MB / 0.8434 GB, free: 5.414 MB / 0.5919 GB Notification: Performance of NFFlatten.flatten: time 0.002136/0.6562, allocations: 1.392 MB / 0.8447 GB, free: 4.594 MB / 0.5919 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0003886/0.6566, allocations: 173.3 kB / 0.8449 GB, free: 4.488 MB / 0.5919 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002599/0.6592, allocations: 1.144 MB / 0.846 GB, free: 3.887 MB / 0.5919 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0006886/0.6599, allocations: 0.5077 MB / 0.8465 GB, free: 3.559 MB / 0.5919 GB Notification: Performance of NFPackage.collectConstants: time 0.0001049/0.66, allocations: 78.62 kB / 0.8466 GB, free: 3.559 MB / 0.5919 GB Notification: Performance of NFFlatten.collectFunctions: time 0.005303/0.6653, allocations: 2.616 MB / 0.8491 GB, free: 2.422 MB / 0.5919 GB Notification: Performance of NFScalarize.scalarize: time 0.0002628/0.6656, allocations: 202.8 kB / 0.8493 GB, free: 2.258 MB / 0.5919 GB Notification: Performance of NFVerifyModel.verify: time 0.0006479/0.6662, allocations: 0.5028 MB / 0.8498 GB, free: 1.914 MB / 0.5919 GB Notification: Performance of NFConvertDAE.convert: time 0.00462/0.6708, allocations: 1.909 MB / 0.8517 GB, free: 0.875 MB / 0.5919 GB Notification: Performance of FrontEnd - DAE generated: time 6.382e-06/0.6708, allocations: 0 / 0.8517 GB, free: 0.875 MB / 0.5919 GB Notification: Performance of FrontEnd: time 2.324e-06/0.6708, allocations: 0 / 0.8517 GB, free: 0.875 MB / 0.5919 GB Notification: Performance of Transformations before backend: time 1.749e-05/0.6708, allocations: 2.875 kB / 0.8517 GB, free: 0.875 MB / 0.5919 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 183 * Number of variables: 183 Notification: Performance of Generate backend data structure: time 0.00302/0.6739, allocations: 1.515 MB / 0.8532 GB, free: 15.77 MB / 0.6075 GB Notification: Performance of prepare preOptimizeDAE: time 4.747e-05/0.6739, allocations: 10.47 kB / 0.8532 GB, free: 15.77 MB / 0.6075 GB Notification: Performance of preOpt introduceOutputRealDerivatives (simulation): time 3.808e-05/0.6739, allocations: 19.12 kB / 0.8532 GB, free: 15.77 MB / 0.6075 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001387/0.6741, allocations: 117.6 kB / 0.8533 GB, free: 15.67 MB / 0.6075 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001661/0.6757, allocations: 250.5 kB / 0.8535 GB, free: 15.54 MB / 0.6075 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001442/0.6772, allocations: 0.7117 MB / 0.8542 GB, free: 15.02 MB / 0.6075 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002899/0.6775, allocations: 265.1 kB / 0.8545 GB, free: 14.76 MB / 0.6075 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001162/0.6776, allocations: 76.14 kB / 0.8546 GB, free: 14.73 MB / 0.6075 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001669/0.6793, allocations: 0.8218 MB / 0.8554 GB, free: 14.24 MB / 0.6075 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.293e-05/0.6793, allocations: 0 / 0.8554 GB, free: 14.24 MB / 0.6075 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 7.279e-05/0.6794, allocations: 29.62 kB / 0.8554 GB, free: 14.22 MB / 0.6075 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.546e-05/0.6794, allocations: 20.19 kB / 0.8554 GB, free: 14.22 MB / 0.6075 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001428/0.6808, allocations: 0.6541 MB / 0.8561 GB, free: 13.9 MB / 0.6075 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 0.004346/0.6852, allocations: 2.94 MB / 0.8589 GB, free: 11.38 MB / 0.6075 GB Notification: Performance of preOpt comSubExp (simulation): time 0.00134/0.6865, allocations: 0.5597 MB / 0.8595 GB, free: 11.08 MB / 0.6075 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0006937/0.6872, allocations: 327.4 kB / 0.8598 GB, free: 10.92 MB / 0.6075 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002683/0.6875, allocations: 83.97 kB / 0.8599 GB, free: 10.89 MB / 0.6075 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.194e-05/0.6875, allocations: 38.53 kB / 0.8599 GB, free: 10.84 MB / 0.6075 GB Notification: Performance of pre-optimization done (n=59): time 2.204e-06/0.6875, allocations: 0 / 0.8599 GB, free: 10.84 MB / 0.6075 GB Notification: Performance of matching and sorting (n=59): time 0.004871/0.6924, allocations: 1.445 MB / 0.8613 GB, free: 9.418 MB / 0.6075 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.096e-05/0.6924, allocations: 59.91 kB / 0.8614 GB, free: 9.344 MB / 0.6075 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.000887/0.6933, allocations: 0.673 MB / 0.862 GB, free: 8.664 MB / 0.6075 GB Notification: Performance of collectPreVariables (initialization): time 6.112e-05/0.6934, allocations: 37.7 kB / 0.8621 GB, free: 8.621 MB / 0.6075 GB Notification: Performance of collectInitialEqns (initialization): time 0.000353/0.6937, allocations: 436.8 kB / 0.8625 GB, free: 8.188 MB / 0.6075 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002009/0.6939, allocations: 219.2 kB / 0.8627 GB, free: 7.977 MB / 0.6075 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002094/0.6941, allocations: 110.3 kB / 0.8628 GB, free: 7.863 MB / 0.6075 GB Notification: Performance of setup shared object (initialization): time 0.000156/0.6943, allocations: 326 kB / 0.8631 GB, free: 7.539 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0006556/0.6949, allocations: 253.2 kB / 0.8633 GB, free: 7.293 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0006652/0.6956, allocations: 261.8 kB / 0.8636 GB, free: 7.039 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001332/0.6969, allocations: 0.5245 MB / 0.8641 GB, free: 6.512 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.995e-06/0.6969, allocations: 0 / 0.8641 GB, free: 6.512 MB / 0.6075 GB Notification: Performance of matching and sorting (n=66) (initialization): time 0.002968/0.6999, allocations: 1.026 MB / 0.8651 GB, free: 5.473 MB / 0.6075 GB Notification: Performance of prepare postOptimizeDAE: time 1.798e-05/0.6999, allocations: 4 kB / 0.8651 GB, free: 5.469 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.732e-06/0.6999, allocations: 4 kB / 0.8651 GB, free: 5.465 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0008536/0.7008, allocations: 226.4 kB / 0.8653 GB, free: 5.234 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0007622/0.7016, allocations: 139.8 kB / 0.8655 GB, free: 5.098 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.006311/0.7079, allocations: 4.805 MB / 0.8702 GB, free: 15.95 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.000695/0.7086, allocations: 67.72 kB / 0.8702 GB, free: 15.89 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 9.895e-05/0.7087, allocations: 39.98 kB / 0.8703 GB, free: 15.85 MB / 0.6231 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 1 * 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 (57): * Single equations (assignments): 54 * 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): 3 systems {(3,1,88.9%), (1,3,100.0%), (1,3,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0003827/0.709, allocations: 197.7 kB / 0.8704 GB, free: 15.64 MB / 0.6231 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001893/0.7092, allocations: 95.38 kB / 0.8705 GB, free: 15.55 MB / 0.6231 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003737/0.713, allocations: 1.407 MB / 0.8719 GB, free: 14.12 MB / 0.6231 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.736e-06/0.713, allocations: 7.938 kB / 0.8719 GB, free: 14.12 MB / 0.6231 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.983e-06/0.713, allocations: 4 kB / 0.8719 GB, free: 14.11 MB / 0.6231 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 9.157e-06/0.713, allocations: 3.984 kB / 0.8719 GB, free: 14.11 MB / 0.6231 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.00459/0.7176, allocations: 1.982 MB / 0.8739 GB, free: 12.06 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.769e-06/0.7176, allocations: 0 / 0.8739 GB, free: 12.06 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0007785/0.7184, allocations: 139.8 kB / 0.874 GB, free: 11.93 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0007834/0.7191, allocations: 238.4 kB / 0.8742 GB, free: 11.68 MB / 0.6231 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.894e-05/0.7192, allocations: 27.92 kB / 0.8743 GB, free: 11.66 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.006613/0.7258, allocations: 4.789 MB / 0.8789 GB, free: 6.527 MB / 0.6231 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 7.574e-06/0.7258, allocations: 3.938 kB / 0.8789 GB, free: 6.523 MB / 0.6231 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00387/0.7297, allocations: 1.424 MB / 0.8803 GB, free: 5.062 MB / 0.6231 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004041/0.7301, allocations: 147.1 kB / 0.8805 GB, free: 4.918 MB / 0.6231 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001723/0.7303, allocations: 12 kB / 0.8805 GB, free: 4.906 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000543/0.7308, allocations: 47.91 kB / 0.8805 GB, free: 4.859 MB / 0.6231 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001648/0.731, allocations: 56.39 kB / 0.8806 GB, free: 4.805 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.593e-05/0.7311, allocations: 31.98 kB / 0.8806 GB, free: 4.773 MB / 0.6231 GB Notification: Performance of sorting global known variables: time 0.0007574/0.7318, allocations: 483 kB / 0.8811 GB, free: 4.305 MB / 0.6231 GB Notification: Performance of sort global known variables: time 9e-08/0.7318, allocations: 0 / 0.8811 GB, free: 4.305 MB / 0.6231 GB Notification: Performance of remove unused functions: time 0.001417/0.7332, allocations: 379 kB / 0.8814 GB, free: 3.934 MB / 0.6231 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 6 * Number of states: 4 (crossFlowNTU.h_out_A,crossFlowNTU.h_out_B,flowResistanceA.inlet.m_flow,flowResistanceB.inlet.m_flow) * 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): 50 * 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): 3 systems {(3,1,88.9%), (1,3,100.0%), (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 0.004869/0.7381, allocations: 2.342 MB / 0.8837 GB, free: 1.578 MB / 0.6231 GB Notification: Performance of simCode: created initialization part: time 0.002685/0.7408, allocations: 1.036 MB / 0.8847 GB, free: 0.5 MB / 0.6231 GB Notification: Performance of simCode: created event and clocks part: time 5.129e-06/0.7408, allocations: 3.938 kB / 0.8847 GB, free: 0.4961 MB / 0.6231 GB Notification: Performance of simCode: created simulation system equations: time 0.001739/0.7425, allocations: 0.787 MB / 0.8855 GB, free: 15.67 MB / 0.6387 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001161/0.7437, allocations: 208.2 kB / 0.8857 GB, free: 15.48 MB / 0.6387 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01444/0.7581, allocations: 7.084 MB / 0.8926 GB, free: 8.223 MB / 0.6387 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.000749/0.7589, allocations: 1.001 MB / 0.8936 GB, free: 7.195 MB / 0.6387 GB Notification: Performance of simCode: alias equations: time 0.001055/0.7599, allocations: 451.7 kB / 0.894 GB, free: 6.762 MB / 0.6387 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0007123/0.7607, allocations: 411.2 kB / 0.8944 GB, free: 6.359 MB / 0.6387 GB Notification: Performance of SimCode: time 7.71e-07/0.7607, allocations: 0 / 0.8944 GB, free: 6.359 MB / 0.6387 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.06675/0.8274, allocations: 25.62 MB / 0.9194 GB, free: 13 MB / 0.67 GB Notification: Performance of buildModelFMU: Generate platform static: time 13.31/14.14, allocations: 4.062 kB / 0.9194 GB, free: 13 MB / 0.67 GB " [Timeout remaining time 646] (rm -f ThermofluidStream_ThermofluidStream.HeatExchangers.Tests.CrossFlowNTU_zeroMassFlow.pipe ; mkfifo ThermofluidStream_ThermofluidStream.HeatExchangers.Tests.CrossFlowNTU_zeroMassFlow.pipe ; head -c 1048576 < ThermofluidStream_ThermofluidStream.HeatExchangers.Tests.CrossFlowNTU_zeroMassFlow.pipe >> ../files/ThermofluidStream_ThermofluidStream.HeatExchangers.Tests.CrossFlowNTU_zeroMassFlow.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=ThermofluidStream_ThermofluidStream.HeatExchangers.Tests.CrossFlowNTU_zeroMassFlow_res.mat --tempDir=temp_ThermofluidStream_ThermofluidStream_HeatExchangers_Tests_CrossFlowNTU_zeroMassFlow_fmu --startTime=0 --stopTime=100 --stepSize=0.1 --timeout=1200 --tolerance=1e-06 ThermofluidStream_ThermofluidStream_HeatExchangers_Tests_CrossFlowNTU_zeroMassFlow.fmu > ThermofluidStream_ThermofluidStream.HeatExchangers.Tests.CrossFlowNTU_zeroMassFlow.pipe 2>&1) [Timeout 1260.0] diffSimulationResults("ThermofluidStream_ThermofluidStream.HeatExchangers.Tests.CrossFlowNTU_zeroMassFlow_res.mat","/mnt/ReferenceFiles/ThermofluidStream-main-regression/ReferenceData/ThermofluidStream.HeatExchangers.Tests.CrossFlowNTU_zeroMassFlow_ref.mat","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/ThermofluidStream_ThermofluidStream.HeatExchangers.Tests.CrossFlowNTU_zeroMassFlow.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 660] "" [Timeout remaining time 660] Reference file matches [Calling sys.exit(0), Time elapsed: 17.640878324978985]