Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr PowerSystems_PowerSystems.Examples.Generic.Network.NetworkControlled.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 0.001274/0.001274, allocations: 112.2 kB / 21.19 MB, free: 0.7617 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 0.001419/0.001419, allocations: 209.9 kB / 24.49 MB, free: 4.145 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 / 258.3 MB, free: 7.988 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/PowerSystems 2.0.0/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/PowerSystems 2.0.0/package.mo): time 0.1787/0.1787, allocations: 38.53 MB / 353.2 MB, free: 12.54 MB / 286.1 MB " [Timeout remaining time 180] Using package PowerSystems with version 2.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/PowerSystems 2.0.0/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: translateModel(PowerSystems.Examples.Generic.Network.NetworkControlled,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="PowerSystems_PowerSystems.Examples.Generic.Network.NetworkControlled") translateModel(PowerSystems.Examples.Generic.Network.NetworkControlled,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="PowerSystems_PowerSystems.Examples.Generic.Network.NetworkControlled") [Timeout 660] "Notification: PowerSystems 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: Performance of FrontEnd - loaded program: time 0.002012/0.002012, allocations: 71.88 kB / 493.8 MB, free: 4.379 MB / 350.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3098/0.3118, allocations: 62.47 MB / 0.5432 GB, free: 0.6211 MB / 382.1 MB Notification: Performance of NFInst.instantiate(PowerSystems.Examples.Generic.Network.NetworkControlled): time 0.01183/0.3236, allocations: 9.731 MB / 0.5527 GB, free: 8.957 MB / 398.1 MB Notification: Performance of NFInst.instExpressions: time 0.009334/0.3329, allocations: 5.509 MB / 0.5581 GB, free: 4.531 MB / 398.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.001203/0.3341, allocations: 34.44 kB / 0.5581 GB, free: 4.52 MB / 398.1 MB Notification: Performance of NFTyping.typeComponents: time 0.00323/0.3374, allocations: 1.171 MB / 0.5593 GB, free: 3.605 MB / 398.1 MB Notification: Performance of NFTyping.typeBindings: time 0.004072/0.3414, allocations: 1.382 MB / 0.5606 GB, free: 2.523 MB / 398.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.001804/0.3432, allocations: 0.6166 MB / 0.5612 GB, free: 1.988 MB / 398.1 MB Notification: Performance of NFFlatten.flatten: time 0.003232/0.3465, allocations: 2.004 MB / 0.5632 GB, free: 15.97 MB / 414.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.001398/0.3479, allocations: 0.8372 MB / 0.564 GB, free: 15.11 MB / 414.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.001668/0.3495, allocations: 0.8754 MB / 0.5649 GB, free: 14.23 MB / 414.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.001456/0.351, allocations: 0.9731 MB / 0.5658 GB, free: 13.25 MB / 414.1 MB Notification: Performance of NFPackage.collectConstants: time 0.0001901/0.3512, allocations: 112 kB / 0.5659 GB, free: 13.14 MB / 414.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.003286/0.3545, allocations: 1.609 MB / 0.5675 GB, free: 11.53 MB / 414.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0007397/0.3552, allocations: 0.596 MB / 0.5681 GB, free: 10.93 MB / 414.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0008669/0.3561, allocations: 0.6608 MB / 0.5687 GB, free: 10.27 MB / 414.1 MB Notification: Performance of NFConvertDAE.convert: time 0.00412/0.3602, allocations: 2.059 MB / 0.5707 GB, free: 8.203 MB / 414.1 MB Notification: Performance of FrontEnd - DAE generated: time 4.579e-06/0.3602, allocations: 3.938 kB / 0.5707 GB, free: 8.199 MB / 414.1 MB Notification: Performance of FrontEnd: time 1.674e-06/0.3602, allocations: 0 / 0.5707 GB, free: 8.199 MB / 414.1 MB Notification: Performance of Transformations before backend: time 2.112e-05/0.3602, allocations: 0 / 0.5707 GB, free: 8.199 MB / 414.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 299 * Number of variables: 299 Notification: Performance of Generate backend data structure: time 0.003153/0.3634, allocations: 1.625 MB / 0.5723 GB, free: 6.535 MB / 414.1 MB Notification: Performance of prepare preOptimizeDAE: time 5.169e-05/0.3634, allocations: 15.98 kB / 0.5723 GB, free: 6.52 MB / 414.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.003654/0.3671, allocations: 483.5 kB / 0.5728 GB, free: 6.047 MB / 414.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001459/0.3685, allocations: 0.6289 MB / 0.5734 GB, free: 5.391 MB / 414.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 8.909e-05/0.3686, allocations: 86.53 kB / 0.5735 GB, free: 5.305 MB / 414.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002164/0.3688, allocations: 112.3 kB / 0.5736 GB, free: 5.195 MB / 414.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002979/0.3718, allocations: 1.613 MB / 0.5752 GB, free: 3.52 MB / 414.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 3.762e-05/0.3719, allocations: 3.953 kB / 0.5752 GB, free: 3.516 MB / 414.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001129/0.372, allocations: 47.98 kB / 0.5752 GB, free: 3.469 MB / 414.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001168/0.3721, allocations: 90.22 kB / 0.5753 GB, free: 3.379 MB / 414.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002955/0.375, allocations: 1.629 MB / 0.5769 GB, free: 1.742 MB / 414.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.008954/0.384, allocations: 4.828 MB / 0.5816 GB, free: 12.79 MB / 430.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.002254/0.3863, allocations: 1.213 MB / 0.5828 GB, free: 11.56 MB / 430.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.001233/0.3875, allocations: 0.7236 MB / 0.5835 GB, free: 10.83 MB / 430.1 MB Notification: Performance of preOpt evalFunc (simulation): time 8.895e-05/0.3876, allocations: 24.97 kB / 0.5835 GB, free: 10.8 MB / 430.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001484/0.3891, allocations: 0.8334 MB / 0.5844 GB, free: 9.953 MB / 430.1 MB Notification: Performance of pre-optimization done (n=126): time 2.875e-06/0.3891, allocations: 0 / 0.5844 GB, free: 9.953 MB / 430.1 MB Notification: Performance of matching and sorting (n=137): time 0.01447/0.4035, allocations: 6.116 MB / 0.5903 GB, free: 3.773 MB / 430.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001214/0.4036, allocations: 145.8 kB / 0.5905 GB, free: 3.598 MB / 430.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0008161/0.4045, allocations: 0.5704 MB / 0.591 GB, free: 3.02 MB / 430.1 MB Notification: Performance of collectPreVariables (initialization): time 0.0001355/0.4046, allocations: 49.7 kB / 0.5911 GB, free: 2.965 MB / 430.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.000467/0.4051, allocations: 477.4 kB / 0.5915 GB, free: 2.492 MB / 430.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0005517/0.4056, allocations: 495.8 kB / 0.592 GB, free: 2.004 MB / 430.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003856/0.406, allocations: 226.9 kB / 0.5922 GB, free: 1.777 MB / 430.1 MB Notification: Performance of setup shared object (initialization): time 0.0002481/0.4063, allocations: 410.8 kB / 0.5926 GB, free: 1.367 MB / 430.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001204/0.4075, allocations: 0.6227 MB / 0.5932 GB, free: 0.7422 MB / 430.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001298/0.4088, allocations: 0.7762 MB / 0.594 GB, free: 15.92 MB / 446.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.002542/0.4113, allocations: 1.498 MB / 0.5954 GB, free: 14.38 MB / 446.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 8.316e-06/0.4113, allocations: 4 kB / 0.5954 GB, free: 14.38 MB / 446.1 MB Notification: Performance of matching and sorting (n=162) (initialization): time 0.004331/0.4156, allocations: 2.068 MB / 0.5975 GB, free: 12.29 MB / 446.1 MB Notification: Performance of prepare postOptimizeDAE: time 7.779e-05/0.4157, allocations: 36.61 kB / 0.5975 GB, free: 12.25 MB / 446.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.577e-05/0.4157, allocations: 7.984 kB / 0.5975 GB, free: 12.24 MB / 446.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.001327/0.4171, allocations: 453.5 kB / 0.5979 GB, free: 11.79 MB / 446.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001139/0.4182, allocations: 259.6 kB / 0.5982 GB, free: 11.54 MB / 446.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.009678/0.4279, allocations: 6.543 MB / 0.6046 GB, free: 4.746 MB / 446.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001036/0.4289, allocations: 75.92 kB / 0.6046 GB, free: 4.672 MB / 446.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001325/0.429, allocations: 51.97 kB / 0.6047 GB, free: 4.621 MB / 446.1 MB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001591/0.4306, allocations: 0.8694 MB / 0.6055 GB, free: 3.746 MB / 446.1 MB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001298/0.4319, allocations: 0.7762 MB / 0.6063 GB, free: 2.922 MB / 446.1 MB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.002454/0.4344, allocations: 1.467 MB / 0.6077 GB, free: 1.414 MB / 446.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 4.939e-06/0.4344, allocations: 0 / 0.6077 GB, free: 1.414 MB / 446.1 MB Notification: Performance of matching and sorting (n=162) (initialization_lambda0): time 0.003893/0.4383, allocations: 1.987 MB / 0.6097 GB, free: 15.41 MB / 462.1 MB Notification: Performance of prepare postOptimizeDAE: time 4.771e-05/0.4383, allocations: 40.67 kB / 0.6097 GB, free: 15.36 MB / 462.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.406e-05/0.4383, allocations: 11.98 kB / 0.6097 GB, free: 15.35 MB / 462.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.001216/0.4396, allocations: 441.8 kB / 0.6101 GB, free: 14.91 MB / 462.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001236/0.4408, allocations: 259.5 kB / 0.6104 GB, free: 14.66 MB / 462.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.008788/0.4496, allocations: 6.356 MB / 0.6166 GB, free: 8.055 MB / 462.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001079/0.4507, allocations: 75.92 kB / 0.6167 GB, free: 7.98 MB / 462.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001236/0.4508, allocations: 60.05 kB / 0.6167 GB, free: 7.922 MB / 462.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 13 * Number of states: 0 () * Number of discrete variables: 8 (system.initime,disturbance.count,$PRE.disturbance.count,disturbance.T_start,$PRE.disturbance.T_start,$whenCondition1,$whenCondition2,frequencyPowerControl.I.local_reset) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (122): * Single equations (assignments): 119 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * 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): 2 systems {(1,9), (2,29)} Notification: Performance of prepare postOptimizeDAE: time 0.0003799/0.4512, allocations: 248 kB / 0.617 GB, free: 7.672 MB / 462.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000173/0.4513, allocations: 103.3 kB / 0.6171 GB, free: 7.57 MB / 462.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004464/0.4558, allocations: 2.138 MB / 0.6192 GB, free: 5.41 MB / 462.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.384e-05/0.4558, allocations: 16 kB / 0.6192 GB, free: 5.395 MB / 462.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.085e-06/0.4558, allocations: 7.938 kB / 0.6192 GB, free: 5.387 MB / 462.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.858e-05/0.4558, allocations: 11.97 kB / 0.6192 GB, free: 5.375 MB / 462.1 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 postOpt removeSimpleEquations (simulation): time 0.007315/0.4632, allocations: 3.886 MB / 0.623 GB, free: 1.375 MB / 462.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.027e-05/0.4632, allocations: 4 kB / 0.623 GB, free: 1.371 MB / 462.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0009268/0.4641, allocations: 211.7 kB / 0.6232 GB, free: 1.164 MB / 462.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.00164/0.4657, allocations: 0.5014 MB / 0.6237 GB, free: 0.6562 MB / 462.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.000107/0.4658, allocations: 43.97 kB / 0.6237 GB, free: 0.6133 MB / 462.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.009929/0.4758, allocations: 6.914 MB / 0.6305 GB, free: 9.449 MB / 478.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.731e-06/0.4758, allocations: 8.031 kB / 0.6305 GB, free: 9.441 MB / 478.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.005686/0.4815, allocations: 3.065 MB / 0.6335 GB, free: 6.32 MB / 478.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0006383/0.4821, allocations: 215.2 kB / 0.6337 GB, free: 6.109 MB / 478.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001382/0.4822, allocations: 28 kB / 0.6337 GB, free: 6.082 MB / 478.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0007331/0.483, allocations: 71.92 kB / 0.6338 GB, free: 6.012 MB / 478.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0004079/0.4834, allocations: 129.2 kB / 0.6339 GB, free: 5.887 MB / 478.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001299/0.4835, allocations: 48.05 kB / 0.6339 GB, free: 5.84 MB / 478.1 MB Notification: Performance of sorting global known variables: time 0.0006004/0.4841, allocations: 410.9 kB / 0.6343 GB, free: 5.445 MB / 478.1 MB Notification: Performance of sort global known variables: time 9e-08/0.4841, allocations: 0 / 0.6343 GB, free: 5.445 MB / 478.1 MB Notification: Performance of remove unused functions: time 0.001922/0.486, allocations: 0.6602 MB / 0.635 GB, free: 4.785 MB / 478.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 11 * Number of states: 4 (inertia1.phi,inertia1.w,frequencyPowerControl.I.y,system.theta) * Number of discrete variables: 5 (system.initime,$whenCondition2,$whenCondition1,disturbance.T_start,disturbance.count) * Number of discrete states: 1 (disturbance.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (103): * Single equations (assignments): 98 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 3 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * 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): 2 systems {(3,40), (1,6)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0002266/0.4863, allocations: 139 kB / 0.6351 GB, free: 4.637 MB / 478.1 MB Notification: Performance of simCode: created initialization part: time 0.005735/0.492, allocations: 3.179 MB / 0.6382 GB, free: 1.379 MB / 478.1 MB Notification: Performance of simCode: created event and clocks part: time 7.273e-06/0.492, allocations: 4 kB / 0.6382 GB, free: 1.375 MB / 478.1 MB Notification: Performance of simCode: created simulation system equations: time 0.002273/0.4943, allocations: 1.246 MB / 0.6394 GB, free: 104 kB / 478.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001106/0.4954, allocations: 199.6 kB / 0.6396 GB, free: 15.91 MB / 494.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.005114/0.5005, allocations: 2.783 MB / 0.6423 GB, free: 13.07 MB / 494.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.00115/0.5016, allocations: 1.264 MB / 0.6436 GB, free: 11.78 MB / 494.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003797/0.502, allocations: 95.39 kB / 0.6437 GB, free: 11.68 MB / 494.1 MB Notification: Performance of SimCode: time 6.42e-07/0.502, allocations: 0 / 0.6437 GB, free: 11.68 MB / 494.1 MB Notification: Performance of Templates: time 0.03411/0.5361, allocations: 23.73 MB / 0.6668 GB, free: 3.91 MB / 0.4981 GB " [Timeout remaining time 659] make -j1 -f PowerSystems_PowerSystems.Examples.Generic.Network.NetworkControlled.makefile [Timeout 660] (rm -f PowerSystems_PowerSystems.Examples.Generic.Network.NetworkControlled.pipe ; mkfifo PowerSystems_PowerSystems.Examples.Generic.Network.NetworkControlled.pipe ; head -c 1048576 < PowerSystems_PowerSystems.Examples.Generic.Network.NetworkControlled.pipe >> ../files/PowerSystems_PowerSystems.Examples.Generic.Network.NetworkControlled.sim & ./PowerSystems_PowerSystems.Examples.Generic.Network.NetworkControlled -abortSlowSimulation -alarm=480 -lv LOG_STATS > PowerSystems_PowerSystems.Examples.Generic.Network.NetworkControlled.pipe 2>&1) [Timeout 480] [Calling sys.exit(0), Time elapsed: 9.374410692136735] Failed to read output from testmodel.py, exit status != 0: 0.5459942030720413 0.5624253189999999 0.19876866899999995 Calling exit ...