Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ModelicaTest_4.1.0-beta.om_ModelicaTest.Rotational.TestFriction.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices trunk/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices trunk/package.mo): time 0.001461/0.001461, allocations: 105.1 kB / 21.23 MB, free: 0.6562 MB / 14.72 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex trunk/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex trunk/package.mo): time 0.001823/0.001823, allocations: 213.9 kB / 24.54 MB, free: 4.016 MB / 14.72 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica trunk/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica trunk/package.mo): time 1.517/1.517, allocations: 230.5 MB / 258.2 MB, free: 8.055 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.1.0-beta.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.1.0-beta.om/package.mo): time 0.2446/0.2446, allocations: 46.94 MB / 361.6 MB, free: 4.207 MB / 286.1 MB " [Timeout remaining time 180] Using package ModelicaTest with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.1.0-beta.om/package.mo) Using package Modelica with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica trunk/package.mo) Using package Complex with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex trunk/package.mo) Using package ModelicaServices with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices trunk/package.mo) Running command: "" <> buildModelFMU(ModelicaTest.Rotational.TestFriction,fileNamePrefix="ModelicaTest_4_1_0-beta_om_ModelicaTest_Rotational_TestFriction",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(ModelicaTest.Rotational.TestFriction,fileNamePrefix="ModelicaTest_4_1_0-beta_om_ModelicaTest_Rotational_TestFriction",fmuType="me",version="2.0",platforms={"static"}) [Timeout 660] "Warning: Requested package Modelica of version 4.1.0, but this package was already loaded with version trunk. OpenModelica cannot reason about compatibility between the two packages since they are not semantic versions. Notification: Performance of FrontEnd - loaded program: time 0.002331/0.002331, allocations: 79.88 kB / 0.497 GB, free: 7.785 MB / 366.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3555/0.3578, allocations: 66.08 MB / 0.5615 GB, free: 4.297 MB / 398.1 MB Notification: Performance of NFInst.instantiate(ModelicaTest.Rotational.TestFriction): time 0.006112/0.3639, allocations: 4.136 MB / 0.5655 GB, free: 140 kB / 398.1 MB Notification: Performance of NFInst.instExpressions: time 0.002868/0.3668, allocations: 1.504 MB / 0.567 GB, free: 14.62 MB / 414.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0002754/0.3671, allocations: 19.88 kB / 0.567 GB, free: 14.61 MB / 414.1 MB Notification: Performance of NFTyping.typeComponents: time 0.0003907/0.3675, allocations: 130.8 kB / 0.5671 GB, free: 14.48 MB / 414.1 MB Notification: Performance of NFTyping.typeBindings: time 0.0005671/0.368, allocations: 289.9 kB / 0.5674 GB, free: 14.19 MB / 414.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.0008523/0.3689, allocations: 347.4 kB / 0.5678 GB, free: 13.85 MB / 414.1 MB Notification: Performance of NFFlatten.flatten: time 0.001414/0.3703, allocations: 1.097 MB / 0.5688 GB, free: 12.75 MB / 414.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.000308/0.3706, allocations: 140.9 kB / 0.569 GB, free: 12.6 MB / 414.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0007537/0.3714, allocations: 498.5 kB / 0.5694 GB, free: 12.11 MB / 414.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.000723/0.3721, allocations: 0.5216 MB / 0.5699 GB, free: 11.59 MB / 414.1 MB Notification: Performance of NFPackage.collectConstants: time 0.0001328/0.3722, allocations: 84 kB / 0.57 GB, free: 11.51 MB / 414.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.000296/0.3725, allocations: 136 kB / 0.5702 GB, free: 11.38 MB / 414.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0002702/0.3728, allocations: 235.3 kB / 0.5704 GB, free: 11.14 MB / 414.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0004259/0.3732, allocations: 433.8 kB / 0.5708 GB, free: 10.72 MB / 414.1 MB Notification: Performance of NFConvertDAE.convert: time 0.001218/0.3744, allocations: 1.031 MB / 0.5718 GB, free: 9.684 MB / 414.1 MB Notification: Performance of FrontEnd - DAE generated: time 4.308e-06/0.3744, allocations: 0 / 0.5718 GB, free: 9.684 MB / 414.1 MB Notification: Performance of FrontEnd: time 1.403e-06/0.3744, allocations: 0 / 0.5718 GB, free: 9.684 MB / 414.1 MB Notification: Performance of Transformations before backend: time 1.478e-05/0.3744, allocations: 4 kB / 0.5718 GB, free: 9.68 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: 156 * Number of variables: 156 Notification: Performance of Generate backend data structure: time 0.002297/0.3767, allocations: 1.1 MB / 0.5729 GB, free: 8.547 MB / 414.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.172e-05/0.3768, allocations: 12.03 kB / 0.5729 GB, free: 8.535 MB / 414.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001397/0.3769, allocations: 102.7 kB / 0.573 GB, free: 8.426 MB / 414.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0004899/0.3774, allocations: 128.3 kB / 0.5731 GB, free: 8.301 MB / 414.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0008842/0.3783, allocations: 419.9 kB / 0.5735 GB, free: 7.867 MB / 414.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 6.329e-05/0.3784, allocations: 53.44 kB / 0.5736 GB, free: 7.812 MB / 414.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001454/0.3785, allocations: 67.95 kB / 0.5736 GB, free: 7.746 MB / 414.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001573/0.3801, allocations: 0.8145 MB / 0.5744 GB, free: 6.898 MB / 414.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 3.114e-05/0.3801, allocations: 12 kB / 0.5744 GB, free: 6.887 MB / 414.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.26e-05/0.3802, allocations: 28 kB / 0.5745 GB, free: 6.859 MB / 414.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.656e-05/0.3802, allocations: 16 kB / 0.5745 GB, free: 6.844 MB / 414.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001677/0.3819, allocations: 0.7361 MB / 0.5752 GB, free: 6.109 MB / 414.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.004547/0.3864, allocations: 2.514 MB / 0.5776 GB, free: 3.484 MB / 414.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.001565/0.388, allocations: 0.623 MB / 0.5783 GB, free: 2.824 MB / 414.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0007971/0.3888, allocations: 359.5 kB / 0.5786 GB, free: 2.465 MB / 414.1 MB Notification: Performance of preOpt evalFunc (simulation): time 7.337e-05/0.3889, allocations: 11.98 kB / 0.5786 GB, free: 2.453 MB / 414.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.126e-05/0.3889, allocations: 42.56 kB / 0.5787 GB, free: 2.402 MB / 414.1 MB Notification: Performance of pre-optimization done (n=79): time 3.086e-06/0.3889, allocations: 0 / 0.5787 GB, free: 2.402 MB / 414.1 MB Notification: Performance of matching and sorting (n=83): time 0.007966/0.3969, allocations: 2.952 MB / 0.5815 GB, free: 15.34 MB / 430.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 9.39e-05/0.397, allocations: 140.5 kB / 0.5817 GB, free: 15.17 MB / 430.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0007063/0.3977, allocations: 481.9 kB / 0.5821 GB, free: 14.69 MB / 430.1 MB Notification: Performance of collectPreVariables (initialization): time 0.0001034/0.3978, allocations: 53.69 kB / 0.5822 GB, free: 14.63 MB / 430.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0002374/0.398, allocations: 285.1 kB / 0.5824 GB, free: 14.35 MB / 430.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.000294/0.3983, allocations: 297.6 kB / 0.5827 GB, free: 14.05 MB / 430.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002958/0.3986, allocations: 174.5 kB / 0.5829 GB, free: 13.88 MB / 430.1 MB Notification: Performance of setup shared object (initialization): time 0.0001944/0.3988, allocations: 370.8 kB / 0.5833 GB, free: 13.5 MB / 430.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0008292/0.3996, allocations: 361.8 kB / 0.5836 GB, free: 13.15 MB / 430.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0009663/0.4006, allocations: 0.5215 MB / 0.5841 GB, free: 12.57 MB / 430.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.001462/0.4021, allocations: 0.6962 MB / 0.5848 GB, free: 11.82 MB / 430.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.037e-06/0.4021, allocations: 3.938 kB / 0.5848 GB, free: 11.81 MB / 430.1 MB Notification: Performance of matching and sorting (n=119) (initialization): time 0.00291/0.405, allocations: 1.193 MB / 0.586 GB, free: 10.6 MB / 430.1 MB Notification: Performance of prepare postOptimizeDAE: time 3.143e-05/0.405, allocations: 8 kB / 0.586 GB, free: 10.59 MB / 430.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.374e-05/0.405, allocations: 4 kB / 0.586 GB, free: 10.59 MB / 430.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.001406/0.4064, allocations: 0.5773 MB / 0.5865 GB, free: 10 MB / 430.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005713/0.407, allocations: 143.7 kB / 0.5867 GB, free: 9.859 MB / 430.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.004339/0.4113, allocations: 3.75 MB / 0.5903 GB, free: 5.926 MB / 430.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0009941/0.4123, allocations: 151.9 kB / 0.5905 GB, free: 5.777 MB / 430.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.343e-05/0.4124, allocations: 31.98 kB / 0.5905 GB, free: 5.746 MB / 430.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 19 * Number of states: 0 () * Number of discrete variables: 30 (brake.mode,$PRE.brake.mode,brake.locked,brake.startBackward,$PRE.brake.startBackward,brake.startForward,$PRE.brake.startForward,brake.free,clutch.mode,$PRE.clutch.mode,clutch.locked,clutch.startBackward,$PRE.clutch.startBackward,clutch.startForward,$PRE.clutch.startForward,clutch.free,oneWayClutch.free,oneWayClutch.stuck,$PRE.oneWayClutch.stuck,oneWayClutch.locked,oneWayClutch.startForward,$PRE.oneWayClutch.startForward,bearingFriction.free,bearingFriction.mode,$PRE.bearingFriction.mode,bearingFriction.locked,bearingFriction.startBackward,$PRE.bearingFriction.startBackward,bearingFriction.startForward,$PRE.bearingFriction.startForward) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (88): * Single equations (assignments): 84 * Array equations: 0 * Algorithm blocks: 0 * 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): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 4 systems {(1,8), (1,10), (1,6), (1,7)} Notification: Performance of prepare postOptimizeDAE: time 0.0003963/0.4128, allocations: 228.2 kB / 0.5907 GB, free: 5.516 MB / 430.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002018/0.413, allocations: 67.58 kB / 0.5908 GB, free: 5.449 MB / 430.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0002058/0.4132, allocations: 100.9 kB / 0.5909 GB, free: 5.348 MB / 430.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.166e-05/0.4132, allocations: 12 kB / 0.5909 GB, free: 5.336 MB / 430.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.482e-06/0.4132, allocations: 0 / 0.5909 GB, free: 5.336 MB / 430.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.085e-05/0.4132, allocations: 7.984 kB / 0.5909 GB, free: 5.328 MB / 430.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.00424/0.4175, allocations: 2.118 MB / 0.593 GB, free: 3.145 MB / 430.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.1e-06/0.4175, allocations: 0 / 0.593 GB, free: 3.145 MB / 430.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006012/0.4181, allocations: 112 kB / 0.5931 GB, free: 3.035 MB / 430.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.00121/0.4193, allocations: 0.5458 MB / 0.5936 GB, free: 2.477 MB / 430.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.577e-05/0.4194, allocations: 31.95 kB / 0.5936 GB, free: 2.445 MB / 430.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.00386/0.4232, allocations: 3.543 MB / 0.5971 GB, free: 14.71 MB / 446.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.973e-06/0.4232, allocations: 4.062 kB / 0.5971 GB, free: 14.7 MB / 446.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003617/0.4268, allocations: 1.712 MB / 0.5988 GB, free: 12.97 MB / 446.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0004058/0.4273, allocations: 159.4 kB / 0.5989 GB, free: 12.81 MB / 446.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001458/0.4274, allocations: 28 kB / 0.599 GB, free: 12.79 MB / 446.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0008778/0.4283, allocations: 119.8 kB / 0.5991 GB, free: 12.67 MB / 446.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0004654/0.4287, allocations: 199.5 kB / 0.5993 GB, free: 12.47 MB / 446.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.995e-05/0.4288, allocations: 31.97 kB / 0.5993 GB, free: 12.44 MB / 446.1 MB Notification: Performance of sorting global known variables: time 0.0004176/0.4292, allocations: 330.9 kB / 0.5996 GB, free: 12.12 MB / 446.1 MB Notification: Performance of sort global known variables: time 7e-08/0.4292, allocations: 0 / 0.5996 GB, free: 12.12 MB / 446.1 MB Notification: Performance of remove unused functions: time 0.0008784/0.4301, allocations: 207.9 kB / 0.5998 GB, free: 11.92 MB / 446.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * Number of states: 12 (inertia4.phi,inertia4.w,oneWayClutch.phi_rel,oneWayClutch.w_rel,inertia2.phi,inertia2.w,clutch.phi_rel,clutch.w_rel,inertia1.w,brake.phi,inertia.w,bearingFriction.phi) * Number of discrete variables: 18 (oneWayClutch.startForward,oneWayClutch.locked,oneWayClutch.stuck,oneWayClutch.free,clutch.free,clutch.startForward,clutch.startBackward,clutch.locked,clutch.mode,brake.free,brake.startForward,brake.startBackward,brake.locked,brake.mode,bearingFriction.startForward,bearingFriction.startBackward,bearingFriction.locked,bearingFriction.mode) * Number of discrete states: 11 (bearingFriction.mode,bearingFriction.startForward,bearingFriction.startBackward,brake.mode,brake.startForward,brake.startBackward,clutch.mode,clutch.startForward,clutch.startBackward,oneWayClutch.stuck,oneWayClutch.startForward) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (54): * 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: 4 * 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): 4 systems {(1,6), (1,10), (1,7), (1,6)} Notification: Performance of Backend phase and start with SimCode phase: time 0.005195/0.4353, allocations: 2.564 MB / 0.6023 GB, free: 9.43 MB / 446.1 MB Notification: Performance of simCode: created initialization part: time 0.002513/0.4378, allocations: 0.978 MB / 0.6033 GB, free: 8.441 MB / 446.1 MB Notification: Performance of simCode: created event and clocks part: time 3.246e-06/0.4378, allocations: 0.8125 kB / 0.6033 GB, free: 8.441 MB / 446.1 MB Notification: Performance of simCode: created simulation system equations: time 0.001476/0.4393, allocations: 0.6115 MB / 0.6039 GB, free: 7.816 MB / 446.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001134/0.4404, allocations: 144.6 kB / 0.604 GB, free: 7.676 MB / 446.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01463/0.4551, allocations: 7.373 MB / 0.6112 GB, free: 60 kB / 446.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006696/0.4557, allocations: 0.9226 MB / 0.6121 GB, free: 15.1 MB / 462.1 MB Notification: Performance of simCode: alias equations: time 0.0003508/0.4561, allocations: 73.05 kB / 0.6122 GB, free: 15.02 MB / 462.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003738/0.4565, allocations: 243.3 kB / 0.6124 GB, free: 14.79 MB / 462.1 MB Notification: Performance of SimCode: time 5.81e-07/0.4565, allocations: 0 / 0.6124 GB, free: 14.79 MB / 462.1 MB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.06975/0.5262, allocations: 23.07 MB / 0.6349 GB, free: 7.828 MB / 478.1 MB Notification: Performance of buildModelFMU: Generate platform static: time 13.29/13.81, allocations: 10.11 kB / 0.6349 GB, free: 7.82 MB / 478.1 MB " [Timeout remaining time 646] (rm -f ModelicaTest_4.1.0-beta.om_ModelicaTest.Rotational.TestFriction.pipe ; mkfifo ModelicaTest_4.1.0-beta.om_ModelicaTest.Rotational.TestFriction.pipe ; head -c 1048576 < ModelicaTest_4.1.0-beta.om_ModelicaTest.Rotational.TestFriction.pipe >> ../files/ModelicaTest_4.1.0-beta.om_ModelicaTest.Rotational.TestFriction.sim & python3 -m fmpy simulate --output-file ModelicaTest_4.1.0-beta.om_ModelicaTest.Rotational.TestFriction_res.csv --start-time 0 --stop-time 1.1 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.000219124 ModelicaTest_4_1_0-beta_om_ModelicaTest_Rotational_TestFriction.fmu > ModelicaTest_4.1.0-beta.om_ModelicaTest.Rotational.TestFriction.pipe 2>&1) [Timeout 52.5] [Calling os._exit(0), Time elapsed: 16.92470851307735] Failed to read output from testmodel.py, exit status != 0: ['time', 'clutch.phi_rel', 'clutch.w_rel', 'inertia.phi', 'inertia.w', 'inertia1.phi', 'inertia1.w', 'inertia2.phi', 'inertia2.w', 'inertia5.phi', 'inertia5.w', 'oneWayClutch.phi_rel', 'oneWayClutch.w_rel', 'bearingFriction.mode', 'bearingFriction.startBackward', 'bearingFriction.startForward', 'brake.mode', 'brake.startBackward', 'brake.startForward', 'clutch.mode', 'clutch.startBackward', 'clutch.startForward', 'oneWayClutch.startForward', 'oneWayClutch.stuck'] 13.998196003958583 14.023352359 13.643858948 Calling exit ...