Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr OpenHydraulics_OpenHydraulics.Circuits.OpenCenterForceVelocityControl.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo", uses=false) [Timeout 180] "[:1:22-1:33:writable] Warning: Modelica only supports 32-bit signed integers! Transforming: 13743895347 into a real [:1:1-1:33:writable] Error: Class GC_set_max_heap_size not found in scope (looking for a function or record). Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo): time 0.0004224/0.0004224, allocations: 0 / 0, free: 0 / 0 " [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 0.0003342/0.0003342, allocations: 0 / 0, free: 0 / 0 " [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 0.2707/0.2707, allocations: 0 / 0, free: 0 / 0 " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenHydraulics main/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenHydraulics main/package.mo): time 0.01431/0.01431, allocations: 0 / 0, free: 0 / 0 " [Timeout remaining time 180] Using package OpenHydraulics with version 2.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenHydraulics main/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: simulate(OpenHydraulics.Circuits.OpenCenterForceVelocityControl,startTime=0,stopTime=25,tolerance=1e-08,numberOfIntervals=5000,outputFormat="empty",variableFilter="",fileNamePrefix="OpenHydraulics_OpenHydraulics.Circuits.OpenCenterForceVelocityControl",simflags="-alarm=240 -lv LOG_STATS") simulate(OpenHydraulics.Circuits.OpenCenterForceVelocityControl,startTime=0,stopTime=25,tolerance=1e-08,numberOfIntervals=5000,outputFormat="empty",variableFilter="",fileNamePrefix="OpenHydraulics_OpenHydraulics.Circuits.OpenCenterForceVelocityControl",simflags="-alarm=240 -lv LOG_STATS") [Timeout 900] "Notification: Performance of FrontEnd - loaded program: time 9.22e-07/9.22e-07, allocations: 0 / 0, free: 0 / 0 Notification: Performance of FrontEnd - Absyn->SCode: time 1.298e-05/1.391e-05, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFInst.instantiate(OpenHydraulics.Circuits.OpenCenterForceVelocityControl): time 0.02889/0.0289, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFInst.instExpressions: time 0.02138/0.05028, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFInst.updateImplicitVariability: time 0.00273/0.05301, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFTyping.typeComponents: time 0.004245/0.05726, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFTyping.typeBindings: time 0.007955/0.06521, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFTyping.typeClassSections: time 0.007031/0.07224, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFFlatten.flatten: time 0.007893/0.08014, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFFlatten.resolveConnections: time 0.002772/0.08291, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFEvalConstants.evaluate: time 0.006623/0.08953, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFSimplifyModel.simplify: time 0.004126/0.09366, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFPackage.collectConstants: time 0.0008484/0.09451, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFFlatten.collectFunctions: time 0.002026/0.09653, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFScalarize.scalarize: time 0.00145/0.09798, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFVerifyModel.verify: time 0.003025/0.101, allocations: 0 / 0, free: 0 / 0 Notification: Performance of NFConvertDAE.convert: time 0.008481/0.1095, allocations: 0 / 0, free: 0 / 0 Notification: Performance of FrontEnd - DAE generated: time 0.0005504/0.11, allocations: 0 / 0, free: 0 / 0 Notification: Performance of FrontEnd: time 3.857e-06/0.11, allocations: 0 / 0, free: 0 / 0 Notification: Performance of Transformations before backend: time 4.403e-05/0.1101, allocations: 0 / 0, free: 0 / 0 Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 696 * Number of variables: 696 Notification: Performance of Generate backend data structure: time 0.01578/0.1259, allocations: 0 / 0, free: 0 / 0 Notification: Performance of prepare preOptimizeDAE: time 0.0002175/0.1261, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt normalInlineFunction (simulation): time 0.003454/0.1295, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt evaluateParameters (simulation): time 0.009944/0.1395, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0005787/0.1401, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt expandDerOperator (simulation): time 0.001059/0.1411, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt clockPartitioning (simulation): time 0.01193/0.153, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt findStateOrder (simulation): time 0.0001965/0.1532, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0008133/0.1541, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt inlineArrayEqn (simulation): time 8.678e-05/0.1541, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt removeEqualRHS (simulation): time 0.008987/0.1631, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.03664/0.1998, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt comSubExp (simulation): time 0.007557/0.2073, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt resolveLoops (simulation): time 0.003389/0.2107, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt evalFunc (simulation): time 0.0003868/0.2111, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.004684/0.2158, allocations: 0 / 0, free: 0 / 0 Notification: Performance of pre-optimization done (n=245): time 0.0002448/0.216, allocations: 0 / 0, free: 0 / 0 Notification: Performance of matching and sorting (n=269): time 0.04217/0.2582, allocations: 0 / 0, free: 0 / 0 Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001752/0.2584, allocations: 0 / 0, free: 0 / 0 Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.01101/0.2694, allocations: 0 / 0, free: 0 / 0 Notification: Performance of collectPreVariables (initialization): time 0.0005905/0.27, allocations: 0 / 0, free: 0 / 0 Notification: Performance of collectInitialEqns (initialization): time 0.003814/0.2738, allocations: 0 / 0, free: 0 / 0 Notification: Performance of collectInitialBindings (initialization): time 0.001501/0.2753, allocations: 0 / 0, free: 0 / 0 Notification: Performance of simplifyInitialFunctions (initialization): time 0.002242/0.2775, allocations: 0 / 0, free: 0 / 0 Notification: Performance of setup shared object (initialization): time 8.84e-05/0.2776, allocations: 0 / 0, free: 0 / 0 Notification: Performance of preBalanceInitialSystem (initialization): time 0.003529/0.2811, allocations: 0 / 0, free: 0 / 0 Notification: Performance of partitionIndependentBlocks (initialization): time 0.004185/0.2853, allocations: 0 / 0, free: 0 / 0 Notification: Performance of analyzeInitialSystem (initialization): time 0.01069/0.296, allocations: 0 / 0, free: 0 / 0 Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.108e-05/0.2961, allocations: 0 / 0, free: 0 / 0 Notification: Performance of matching and sorting (n=336) (initialization): time 0.01243/0.3085, allocations: 0 / 0, free: 0 / 0 Notification: Performance of prepare postOptimizeDAE: time 0.0001329/0.3086, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.821e-05/0.3087, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt tearingSystem (initialization): time 0.0008964/0.3096, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003737/0.3133, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01015/0.3235, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002554/0.326, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0006206/0.3266, allocations: 0 / 0, free: 0 / 0 Warning: Assuming fixed start value for the following 7 variables: constantSpeed.phi:VARIABLE(unit = \"rad\" fixed = true ) \"Angle of flange with respect to support (= flange.phi - support.phi)\" type: Real reliefValve.valvePosition:VARIABLE(start = 0.0 fixed = true ) \"Normalized valve position (between 0 and 1)\" type: Real doubleActingCylinder.cushionHead.reliefValve.valvePosition:VARIABLE(start = 0.0 fixed = true ) \"Normalized valve position (between 0 and 1)\" type: Real doubleActingCylinder.cushionRod.reliefValve.valvePosition:VARIABLE(start = 0.0 fixed = true ) \"Normalized valve position (between 0 and 1)\" type: Real constantDisplacementPump.j2.volumeClosed.port[2].p:VARIABLE(flow=false min = 0.0 start = valve4_3posOCtandem.P2A.p_init unit = \"Pa\" fixed = true nominal = 1e5 stateSelect=StateSelect.prefer ) \"Pressure in the connection point\" type: Real [3] doubleActingCylinder.cushionRod.flowFraction:VARIABLE(fixed = true protected = true ) \"fraction of flow allowed by cushion\" type: Real doubleActingCylinder.cushionHead.flowFraction:VARIABLE(fixed = true protected = true ) \"fraction of flow allowed by cushion\" type: Real Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0057/0.3323, allocations: 0 / 0, free: 0 / 0 Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.004045/0.3364, allocations: 0 / 0, free: 0 / 0 Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.01061/0.347, allocations: 0 / 0, free: 0 / 0 Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 5.055e-05/0.3471, allocations: 0 / 0, free: 0 / 0 Notification: Performance of matching and sorting (n=336) (initialization_lambda0): time 0.01236/0.3594, allocations: 0 / 0, free: 0 / 0 Notification: Performance of prepare postOptimizeDAE: time 0.00013/0.3595, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.7e-05/0.3596, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt tearingSystem (initialization): time 0.0008554/0.3604, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003725/0.3642, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.009856/0.374, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002578/0.3766, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0006042/0.3772, allocations: 0 / 0, free: 0 / 0 Warning: Assuming fixed start value for the following 7 variables: constantSpeed.phi:VARIABLE(unit = \"rad\" fixed = true ) \"Angle of flange with respect to support (= flange.phi - support.phi)\" type: Real reliefValve.valvePosition:VARIABLE(start = 0.0 fixed = true ) \"Normalized valve position (between 0 and 1)\" type: Real doubleActingCylinder.cushionHead.reliefValve.valvePosition:VARIABLE(start = 0.0 fixed = true ) \"Normalized valve position (between 0 and 1)\" type: Real doubleActingCylinder.cushionRod.reliefValve.valvePosition:VARIABLE(start = 0.0 fixed = true ) \"Normalized valve position (between 0 and 1)\" type: Real constantDisplacementPump.j2.volumeClosed.port[2].p:VARIABLE(flow=false min = 0.0 start = valve4_3posOCtandem.P2A.p_init unit = \"Pa\" fixed = true nominal = 1e5 stateSelect=StateSelect.prefer ) \"Pressure in the connection point\" type: Real [3] doubleActingCylinder.cushionRod.flowFraction:VARIABLE(fixed = true protected = true ) \"fraction of flow allowed by cushion\" type: Real doubleActingCylinder.cushionHead.flowFraction:VARIABLE(fixed = true protected = true ) \"fraction of flow allowed by cushion\" type: Real Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 47 * Number of states: 0 () * Number of discrete variables: 23 (valve4_3posOCtandem.A2T.data.zetaLaminarKnown,valve4_3posOCtandem.P2B.data.zetaLaminarKnown,valve4_3posOCtandem.B2T.data.zetaLaminarKnown,valve4_3posOCtandem.P2A.data.zetaLaminarKnown,doubleActingCylinder.cushionRod.reliefValve.variableRestriction.data.zetaLaminarKnown,doubleActingCylinder.cushionRod.cushionRestriction.data.zetaLaminarKnown,doubleActingCylinder.cushionHead.reliefValve.variableRestriction.data.zetaLaminarKnown,doubleActingCylinder.cushionHead.cushionRestriction.data.zetaLaminarKnown,reliefValve.variableRestriction.data.zetaLaminarKnown,constantDisplacementPump.mechanicalPumpLosses.free,constantDisplacementPump.mechanicalPumpLosses.mode,$PRE.constantDisplacementPump.mechanicalPumpLosses.mode,constantDisplacementPump.mechanicalPumpLosses.locked,constantDisplacementPump.mechanicalPumpLosses.startBackward,$PRE.constantDisplacementPump.mechanicalPumpLosses.startBackward,constantDisplacementPump.mechanicalPumpLosses.startForward,$PRE.constantDisplacementPump.mechanicalPumpLosses.startForward,doubleActingCylinder.cylinderChamberRod.empty,doubleActingCylinder.cylinderChamberHead.empty,$whenCondition4,$whenCondition3,$whenCondition1,$whenCondition2) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (322): * Single equations (assignments): 310 * Array equations: 0 * Algorithm blocks: 8 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 4 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 3 systems {(1,5,100.0%), (1,3,100.0%), (1,3,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,3)} Notification: Performance of prepare postOptimizeDAE: time 0.001816/0.379, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt lateInlineFunction (simulation): time 0.002189/0.3812, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01245/0.3937, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.856e-05/0.3937, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt constantLinearSystem (simulation): time 2.849e-05/0.3937, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.101e-05/0.3938, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.02733/0.4211, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.823e-05/0.4211, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.003475/0.4246, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt tearingSystem (simulation): time 0.0008532/0.4255, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0005684/0.426, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.009834/0.4359, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.267e-05/0.4359, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01489/0.4508, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt removeConstants (simulation): time 0.005092/0.4559, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001649/0.4575, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002388/0.4599, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt findZeroCrossings (simulation): time 0.002294/0.4622, allocations: 0 / 0, free: 0 / 0 Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0005987/0.4628, allocations: 0 / 0, free: 0 / 0 Notification: Performance of sorting global known variables: time 0.006355/0.4692, allocations: 0 / 0, free: 0 / 0 Notification: Performance of sort global known variables: time 0.0001135/0.4693, allocations: 0 / 0, free: 0 / 0 Notification: Performance of remove unused functions: time 0.0116/0.4809, allocations: 0 / 0, free: 0 / 0 Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 22 * Number of states: 16 (reliefValve.valvePosition,doubleActingCylinder.cushionHead.reliefValve.valvePosition,doubleActingCylinder.cushionHead.flowFraction,doubleActingCylinder.cushionRod.reliefValve.valvePosition,doubleActingCylinder.cushionRod.flowFraction,doubleActingCylinder.damper.s_rel,doubleActingCylinder.damper.v_rel,doubleActingCylinder.leakage_Head2Env.port_b.p,doubleActingCylinder.leakage_Rod2Env.port_b.p,circuitTank.volumeOpen.m,valve4_3posOCtandem.j2.volumeClosed.port[2].p,valve4_3posOCtandem.j3.volumeClosed.port[2].p,valve4_3posOCtandem.dynamicResponse.y,valve4_3posOCtandem.dynamicResponse.yd,constantDisplacementPump.j2.volumeClosed.port[2].p,constantSpeed.phi) * Number of discrete variables: 10 ($whenCondition2,$whenCondition1,$whenCondition3,$whenCondition4,doubleActingCylinder.cylinderChamberHead.empty,doubleActingCylinder.cylinderChamberRod.empty,constantDisplacementPump.mechanicalPumpLosses.startForward,constantDisplacementPump.mechanicalPumpLosses.startBackward,constantDisplacementPump.mechanicalPumpLosses.locked,constantDisplacementPump.mechanicalPumpLosses.mode) * Number of discrete states: 5 (constantDisplacementPump.mechanicalPumpLosses.mode,constantDisplacementPump.mechanicalPumpLosses.startBackward,constantDisplacementPump.mechanicalPumpLosses.startForward,$whenCondition3,$whenCondition4) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (285): * Single equations (assignments): 273 * Array equations: 0 * Algorithm blocks: 8 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 4 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 3 systems {(1,3,100.0%), (1,3,100.0%), (1,5,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,3)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001587/0.4825, allocations: 0 / 0, free: 0 / 0 Notification: Performance of simCode: created initialization part: time 0.01465/0.4971, allocations: 0 / 0, free: 0 / 0 Notification: Performance of simCode: created event and clocks part: time 1.268e-05/0.4971, allocations: 0 / 0, free: 0 / 0 Notification: Performance of simCode: created simulation system equations: time 0.005099/0.5022, allocations: 0 / 0, free: 0 / 0 Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.009433/0.5117, allocations: 0 / 0, free: 0 / 0 Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02683/0.5385, allocations: 0 / 0, free: 0 / 0 Notification: Performance of simCode: some other stuff during SimCode phase: time 0.002946/0.5414, allocations: 0 / 0, free: 0 / 0 Notification: Performance of simCode: alias equations: time 0.00495/0.5464, allocations: 0 / 0, free: 0 / 0 Notification: Performance of simCode: all other stuff during SimCode phase: time 0.003279/0.5497, allocations: 0 / 0, free: 0 / 0 Notification: Performance of SimCode: time 0.001386/0.551, allocations: 0 / 0, free: 0 / 0 Notification: Performance of Templates: time 0.01404/0.5651, allocations: 0 / 0, free: 0 / 0 " [Timeout remaining time 899] [Calling sys.exit(0), Time elapsed: 1.9088483210653067]