Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_12_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup.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 0.0009417/0.0009417, allocations: 80.8 kB / 20.75 MB, free: 3.738 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 0.0009299/0.0009299, allocations: 161 kB / 24.17 MB, free: 328 kB / 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 0.99/0.99, allocations: 177.1 MB / 204.6 MB, free: 5.461 MB / 186.7 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.3-maint.12.x/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.3-maint.12.x/package.mo): time 1.873/1.873, allocations: 377.9 MB / 0.624 GB, free: 8.367 MB / 0.5886 GB " [Timeout remaining time 178] Using package Buildings with version 12.1.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.3-maint.12.x/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.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|y1.y.[0-9,]+.|chi.m2_flow|chi.chi.m2_flow|TChiWatSupSet.y|chi.sta_a2.T|chi.sta_b2.T|chi.sta_a1.T|chi.sta_b1.T|chi.chi.PLR1|chi.chi.PLR2|dat.PLRMax|chi.chi.COP",fileNamePrefix="Buildings_12_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup") translateModel(Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|y1.y.[0-9,]+.|chi.m2_flow|chi.chi.m2_flow|TChiWatSupSet.y|chi.sta_a2.T|chi.sta_b2.T|chi.sta_a1.T|chi.sta_b1.T|chi.chi.PLR1|chi.chi.PLR2|dat.PLRMax|chi.chi.COP",fileNamePrefix="Buildings_12_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup") [Timeout 300] "Notification: Performance of FrontEnd - loaded program: time 1.373e-06/1.373e-06, allocations: 0 / 0.76 GB, free: 6.598 MB / 0.7136 GB Notification: Performance of FrontEnd - Absyn->SCode: time 1.736e-05/1.874e-05, allocations: 10.94 kB / 0.7601 GB, free: 6.586 MB / 0.7136 GB Notification: Performance of NFInst.instantiate(Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup): time 0.03241/0.03243, allocations: 49.12 MB / 0.808 GB, free: 5.352 MB / 0.7605 GB Notification: Performance of NFInst.instExpressions: time 0.0271/0.05953, allocations: 19.5 MB / 0.8271 GB, free: 1.973 MB / 0.7761 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.006066/0.0656, allocations: 337.1 kB / 0.8274 GB, free: 1.641 MB / 0.7761 GB Notification: Performance of NFTyping.typeComponents: time 0.003123/0.06872, allocations: 1.711 MB / 0.8291 GB, free: 15.91 MB / 0.7917 GB Notification: Performance of NFTyping.typeBindings: time 0.0105/0.07922, allocations: 5.86 MB / 0.8348 GB, free: 10.03 MB / 0.7917 GB Notification: Performance of NFTyping.typeClassSections: time 0.008111/0.08733, allocations: 5.186 MB / 0.8398 GB, free: 4.832 MB / 0.7917 GB Notification: Performance of NFFlatten.flatten: time 0.02445/0.1118, allocations: 26.52 MB / 0.8657 GB, free: 10.24 MB / 0.823 GB Notification: Performance of NFFlatten.resolveConnections: time 0.01217/0.1239, allocations: 7.706 MB / 0.8733 GB, free: 2.469 MB / 0.823 GB Notification: Performance of NFEvalConstants.evaluate: time 0.02395/0.1479, allocations: 12.2 MB / 0.8852 GB, free: 6.332 MB / 0.8386 GB Notification: Performance of NFSimplifyModel.simplify: time 0.01096/0.1589, allocations: 6.311 MB / 0.8913 GB, free: 4 kB / 0.8386 GB Notification: Performance of NFPackage.collectConstants: time 0.003199/0.1621, allocations: 1.012 MB / 0.8923 GB, free: 14.99 MB / 0.8542 GB Notification: Performance of NFFlatten.collectFunctions: time 0.005248/0.1673, allocations: 1.604 MB / 0.8939 GB, free: 13.39 MB / 0.8542 GB Notification: Performance of NFScalarize.scalarize: time 0.002363/0.1697, allocations: 2.651 MB / 0.8965 GB, free: 10.73 MB / 0.8542 GB Notification: Performance of NFVerifyModel.verify: time 0.007668/0.1773, allocations: 3.578 MB / 0.9 GB, free: 7.141 MB / 0.8542 GB Notification: Performance of NFConvertDAE.convert: time 0.01041/0.1877, allocations: 8.981 MB / 0.9088 GB, free: 14.13 MB / 0.8698 GB Notification: Performance of FrontEnd - DAE generated: time 6.362e-06/0.1878, allocations: 0 / 0.9088 GB, free: 14.13 MB / 0.8698 GB Notification: Performance of FrontEnd: time 1.312e-06/0.1878, allocations: 4 kB / 0.9088 GB, free: 14.13 MB / 0.8698 GB Notification: Performance of Transformations before backend: time 0.0002272/0.188, allocations: 0 / 0.9088 GB, free: 14.13 MB / 0.8698 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 1232 * Number of variables: 1232 Notification: Performance of Generate backend data structure: time 0.01107/0.199, allocations: 9.406 MB / 0.9179 GB, free: 4.633 MB / 0.8698 GB Notification: Performance of prepare preOptimizeDAE: time 3.929e-05/0.1991, allocations: 12.03 kB / 0.918 GB, free: 4.621 MB / 0.8698 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.003071/0.2022, allocations: 1.423 MB / 0.9193 GB, free: 3.195 MB / 0.8698 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.008227/0.2104, allocations: 6.039 MB / 0.9252 GB, free: 13.01 MB / 0.8855 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.000309/0.2107, allocations: 0.5092 MB / 0.9257 GB, free: 12.48 MB / 0.8855 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0005818/0.2113, allocations: 0.5312 MB / 0.9263 GB, free: 11.95 MB / 0.8855 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.005239/0.2165, allocations: 4.677 MB / 0.9308 GB, free: 6.883 MB / 0.8855 GB Notification: Performance of preOpt findStateOrder (simulation): time 7.979e-05/0.2166, allocations: 15.83 kB / 0.9308 GB, free: 6.867 MB / 0.8855 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0003281/0.2169, allocations: 208 kB / 0.931 GB, free: 6.664 MB / 0.8855 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 9.503e-05/0.217, allocations: 143.9 kB / 0.9312 GB, free: 6.523 MB / 0.8855 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002484/0.2195, allocations: 1.604 MB / 0.9327 GB, free: 4.887 MB / 0.8855 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 0.01968/0.2392, allocations: 16.6 MB / 0.949 GB, free: 3.875 MB / 0.9011 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001258/0.2404, allocations: 0.8892 MB / 0.9498 GB, free: 2.977 MB / 0.9011 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0007386/0.2412, allocations: 0.5462 MB / 0.9504 GB, free: 2.434 MB / 0.9011 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0003687/0.2415, allocations: 161.9 kB / 0.9505 GB, free: 2.277 MB / 0.9011 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001221/0.2428, allocations: 1.652 MB / 0.9521 GB, free: 408 kB / 0.9011 GB Notification: Performance of pre-optimization done (n=212): time 3.847e-06/0.2428, allocations: 0 / 0.9521 GB, free: 408 kB / 0.9011 GB Notification: Performance of matching and sorting (n=212): time 0.00245/0.2452, allocations: 1.424 MB / 0.9535 GB, free: 14.97 MB / 0.9167 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.663e-05/0.2453, allocations: 81.34 kB / 0.9536 GB, free: 14.88 MB / 0.9167 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.006578/0.2518, allocations: 5.755 MB / 0.9592 GB, free: 9.121 MB / 0.9167 GB Notification: Performance of collectPreVariables (initialization): time 0.0002156/0.2521, allocations: 89.7 kB / 0.9593 GB, free: 9.027 MB / 0.9167 GB Notification: Performance of collectInitialEqns (initialization): time 0.001857/0.2539, allocations: 2.466 MB / 0.9617 GB, free: 6.539 MB / 0.9167 GB Notification: Performance of collectInitialBindings (initialization): time 0.0006795/0.2546, allocations: 0.7746 MB / 0.9625 GB, free: 5.758 MB / 0.9167 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0009749/0.2556, allocations: 0.71 MB / 0.9632 GB, free: 5.039 MB / 0.9167 GB Notification: Performance of setup shared object (initialization): time 8.34e-05/0.2557, allocations: 301.1 kB / 0.9634 GB, free: 4.742 MB / 0.9167 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0008024/0.2565, allocations: 402.5 kB / 0.9638 GB, free: 4.344 MB / 0.9167 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.00223/0.2587, allocations: 3.47 MB / 0.9672 GB, free: 15.82 MB / 0.9323 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.002389/0.2611, allocations: 1.996 MB / 0.9692 GB, free: 13.34 MB / 0.9323 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.808e-05/0.2611, allocations: 12 kB / 0.9692 GB, free: 13.33 MB / 0.9323 GB Notification: Performance of matching and sorting (n=400) (initialization): time 0.00342/0.2645, allocations: 2.017 MB / 0.9711 GB, free: 11.27 MB / 0.9323 GB Notification: Performance of prepare postOptimizeDAE: time 3.448e-05/0.2645, allocations: 20 kB / 0.9712 GB, free: 11.25 MB / 0.9323 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.538e-05/0.2646, allocations: 28 kB / 0.9712 GB, free: 11.23 MB / 0.9323 GB Notification: Performance of postOpt tearingSystem (initialization): time 5.376e-05/0.2646, allocations: 52 kB / 0.9712 GB, free: 11.18 MB / 0.9323 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002356/0.267, allocations: 0.8158 MB / 0.972 GB, free: 10.36 MB / 0.9323 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 5.131e-05/0.267, allocations: 71.78 kB / 0.9721 GB, free: 10.29 MB / 0.9323 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003088/0.2701, allocations: 442 kB / 0.9725 GB, free: 9.852 MB / 0.9323 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002422/0.2704, allocations: 127.9 kB / 0.9727 GB, free: 9.727 MB / 0.9323 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 142 * Number of states: 0 () * Number of discrete variables: 16 ($whenCondition6,$whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,chi.chi.tru.y,y1.intTimTab.idx,$PRE.y1.intTimTab.idx,y1.intTimTab.y[2],$PRE.y1.intTimTab.y[2],y1.intTimTab.y[1],$PRE.y1.intTimTab.y[1],y1.y[2],chi.com.y1One,chi.y1[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (400): * Single equations (assignments): 400 * 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 0.001262/0.2716, allocations: 344.1 kB / 0.973 GB, free: 9.379 MB / 0.9323 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0006992/0.2723, allocations: 455.5 kB / 0.9734 GB, free: 8.934 MB / 0.9323 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002786/0.2751, allocations: 1.658 MB / 0.975 GB, free: 7.277 MB / 0.9323 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.652e-05/0.2751, allocations: 24 kB / 0.9751 GB, free: 7.254 MB / 0.9323 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.587e-06/0.2752, allocations: 0 / 0.9751 GB, free: 7.254 MB / 0.9323 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001349/0.2765, allocations: 0.9152 MB / 0.976 GB, free: 6.293 MB / 0.9323 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 postOpt removeSimpleEquations (simulation): time 0.008435/0.2849, allocations: 5.341 MB / 0.9812 GB, free: 0.8789 MB / 0.9323 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.066e-05/0.2849, allocations: 4 kB / 0.9812 GB, free: 0.875 MB / 0.9323 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001798/0.2867, allocations: 0.5524 MB / 0.9817 GB, free: 332 kB / 0.9323 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.423e-05/0.2868, allocations: 11.98 kB / 0.9817 GB, free: 320 kB / 0.9323 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001586/0.2869, allocations: 67.94 kB / 0.9818 GB, free: 252 kB / 0.9323 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.106e-05/0.2869, allocations: 12 kB / 0.9818 GB, free: 240 kB / 0.9323 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.534e-06/0.2869, allocations: 0 / 0.9818 GB, free: 240 kB / 0.9323 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003074/0.29, allocations: 2.01 MB / 0.9838 GB, free: 14.17 MB / 0.948 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001666/0.2917, allocations: 0.891 MB / 0.9846 GB, free: 13.28 MB / 0.948 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0006161/0.2923, allocations: 55.98 kB / 0.9847 GB, free: 13.22 MB / 0.948 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001781/0.2941, allocations: 135.8 kB / 0.9848 GB, free: 13.09 MB / 0.948 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0008702/0.2949, allocations: 0.582 MB / 0.9854 GB, free: 12.51 MB / 0.948 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001946/0.2951, allocations: 75.91 kB / 0.9855 GB, free: 12.43 MB / 0.948 GB Notification: Performance of sorting global known variables: time 0.003151/0.2983, allocations: 2.593 MB / 0.988 GB, free: 9.844 MB / 0.948 GB Notification: Performance of sort global known variables: time 1.11e-07/0.2983, allocations: 0 / 0.988 GB, free: 9.844 MB / 0.948 GB Notification: Performance of remove unused functions: time 0.004089/0.3024, allocations: 1.937 MB / 0.9899 GB, free: 7.902 MB / 0.948 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 9 * Number of states: 16 (chi.chi.vol1.dynBal.U,chi.chi.vol2.dynBal.U,chi.valEva.junInl[1].vol.dynBal.U,chi.valEva.junInl[2].vol.dynBal.U,chi.valEva.junOut[1].vol.dynBal.U,chi.valEva.junOut[2].vol.dynBal.U,chi.valEva.val[1].actPos.y,chi.valEva.val[2].actPos.y,chi.valCon.junInl[1].vol.dynBal.U,chi.valCon.junInl[2].vol.dynBal.U,chi.valCon.junOut[1].vol.dynBal.U,chi.valCon.junOut[2].vol.dynBal.U,chi.valCon.val[1].actPos.y,chi.valCon.val[2].actPos.y,chi.temConLvg.T,chi.temEvaLvg.T) * Number of discrete variables: 12 ($whenCondition6,$whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,chi.y1[1],chi.com.y1One,y1.y[2],y1.intTimTab.y[1],y1.intTimTab.y[2],y1.intTimTab.idx) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (222): * Single equations (assignments): 209 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 10 * When equations: 3 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.0008219/0.3032, allocations: 411 kB / 0.9903 GB, free: 7.512 MB / 0.948 GB Notification: Performance of simCode: created initialization part: time 0.002334/0.3055, allocations: 1.398 MB / 0.9916 GB, free: 6.113 MB / 0.948 GB Notification: Performance of simCode: created event and clocks part: time 0.0001031/0.3056, allocations: 83.84 kB / 0.9917 GB, free: 6.027 MB / 0.948 GB Notification: Performance of simCode: created simulation system equations: time 0.0008998/0.3065, allocations: 0.5896 MB / 0.9923 GB, free: 5.43 MB / 0.948 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.009041/0.3156, allocations: 4.049 MB / 0.9962 GB, free: 1.512 MB / 0.948 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01318/0.3288, allocations: 11.75 MB / 1.008 GB, free: 5.637 MB / 0.9636 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001505/0.3303, allocations: 1.689 MB / 1.009 GB, free: 3.926 MB / 0.9636 GB Notification: Performance of simCode: alias equations: time 0.003307/0.3336, allocations: 1.096 MB / 1.01 GB, free: 2.848 MB / 0.9636 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.004508/0.3381, allocations: 2.204 MB / 1.013 GB, free: 0.6094 MB / 0.9636 GB Notification: Performance of SimCode: time 1.673e-06/0.3381, allocations: 0 / 1.013 GB, free: 0.6094 MB / 0.9636 GB Notification: Performance of Templates: time 0.462/0.8001, allocations: 139.1 MB / 1.148 GB, free: 186.1 MB / 1.01 GB " [Timeout remaining time 299] make -j1 -f Buildings_12_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup.makefile [Timeout 300] (rm -f Buildings_12_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup.pipe ; mkfifo Buildings_12_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup.pipe ; head -c 1048576 < Buildings_12_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup.pipe >> ../files/Buildings_12_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup.sim & ./Buildings_12_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup -abortSlowSimulation -alarm=240 -s gbode -gbm=radauIIA3 -emit_protected -lv LOG_STATS > Buildings_12_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup.pipe 2>&1) [Timeout 240] diffSimulationResults("Buildings_12_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_12.x/Buildings_DHC_Plants_Combined_Subsystems_Validation_ChillerGroup.csv","",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 300] "" [Timeout remaining time 300] Reference file matches [Calling sys.exit(0), Time elapsed: 8.075788802932948]