Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Modelica_4.1.0-beta.om_Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem.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 0.001499/0.001499, allocations: 105.1 kB / 21.22 MB, free: 0.5117 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 0.001675/0.001675, allocations: 217.3 kB / 24.54 MB, free: 3.898 MB / 14.72 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0-beta.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0-beta.om/package.mo): time 1.46/1.46, allocations: 230.6 MB / 258.3 MB, free: 8.031 MB / 206.1 MB " [Timeout remaining time 178] Using package Modelica with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0-beta.om/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(Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem,fileNamePrefix="Modelica_4_1_0-beta_om_Modelica_Mechanics_MultiBody_Examples_Elementary_SpringDamperSystem",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem,fileNamePrefix="Modelica_4_1_0-beta_om_Modelica_Mechanics_MultiBody_Examples_Elementary_SpringDamperSystem",fmuType="me",version="2.0",platforms={"static"}) [Timeout 660] "Warning: Requested package Modelica of version trunk, but this package was already loaded with version 4.1.0. OpenModelica cannot reason about compatibility between the two packages since they are not semantic versions. Warning: Requested package Complex 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. Warning: Requested package ModelicaServices 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 0.001967/0.001967, allocations: 67.89 kB / 378.6 MB, free: 3.164 MB / 302.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2424/0.2444, allocations: 53.37 MB / 431.9 MB, free: 6.906 MB / 334.1 MB Notification: Performance of NFInst.instantiate(Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem): time 0.01485/0.2592, allocations: 12.06 MB / 444 MB, free: 10.8 MB / 350.1 MB Notification: Performance of NFInst.instExpressions: time 0.009947/0.2692, allocations: 4.25 MB / 448.2 MB, free: 6.535 MB / 350.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.001997/0.2712, allocations: 83.56 kB / 448.3 MB, free: 6.453 MB / 350.1 MB Notification: Performance of NFTyping.typeComponents: time 0.005703/0.2769, allocations: 2.799 MB / 451.1 MB, free: 3.645 MB / 350.1 MB Notification: Performance of NFTyping.typeBindings: time 0.005942/0.2828, allocations: 1.992 MB / 453.1 MB, free: 1.645 MB / 350.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.002065/0.2849, allocations: 0.8033 MB / 453.9 MB, free: 0.8398 MB / 350.1 MB Notification: Performance of NFFlatten.flatten: time 0.007117/0.292, allocations: 4.69 MB / 458.6 MB, free: 12.14 MB / 366.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.004294/0.2963, allocations: 2.946 MB / 461.5 MB, free: 9.145 MB / 366.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.002978/0.2993, allocations: 1.705 MB / 463.3 MB, free: 7.434 MB / 366.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.004238/0.3035, allocations: 2.527 MB / 465.8 MB, free: 4.898 MB / 366.1 MB Notification: Performance of NFPackage.collectConstants: time 0.0009916/0.3045, allocations: 356 kB / 466.1 MB, free: 4.551 MB / 366.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.002997/0.3075, allocations: 1.291 MB / 467.4 MB, free: 3.258 MB / 366.1 MB Notification: Performance of NFScalarize.scalarize: time 0.002869/0.3104, allocations: 2.154 MB / 469.6 MB, free: 1.098 MB / 366.1 MB Notification: Performance of NFVerifyModel.verify: time 0.003909/0.3143, allocations: 2.412 MB / 472 MB, free: 14.67 MB / 382.1 MB Notification: Performance of NFConvertDAE.convert: time 0.01137/0.3257, allocations: 7.512 MB / 479.5 MB, free: 7.129 MB / 382.1 MB Notification: Performance of FrontEnd - DAE generated: time 6.843e-06/0.3257, allocations: 0 / 479.5 MB, free: 7.129 MB / 382.1 MB Notification: Performance of FrontEnd: time 1.954e-06/0.3257, allocations: 0 / 479.5 MB, free: 7.129 MB / 382.1 MB Notification: Performance of Transformations before backend: time 0.0002517/0.3259, allocations: 0 / 479.5 MB, free: 7.129 MB / 382.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 1686 * Number of variables: 1686 Notification: Performance of Generate backend data structure: time 0.01226/0.3382, allocations: 5.329 MB / 484.8 MB, free: 1.742 MB / 382.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.402e-05/0.3382, allocations: 8.031 kB / 484.8 MB, free: 1.734 MB / 382.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.001619/0.3398, allocations: 0.8021 MB / 485.6 MB, free: 0.9219 MB / 382.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.009002/0.3488, allocations: 2.217 MB / 487.9 MB, free: 14.7 MB / 398.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.007115/0.356, allocations: 2.87 MB / 490.7 MB, free: 11.78 MB / 398.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003276/0.3563, allocations: 278.8 kB / 491 MB, free: 11.5 MB / 398.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.001998/0.3583, allocations: 427.7 kB / 491.4 MB, free: 11.09 MB / 398.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.02614/0.3844, allocations: 12.27 MB / 0.4919 GB, free: 14 MB / 414.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 0.0001684/0.3846, allocations: 47.58 kB / 0.4919 GB, free: 13.95 MB / 414.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0006569/0.3852, allocations: 171.8 kB / 0.4921 GB, free: 13.79 MB / 414.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.003495/0.3887, allocations: 2.17 MB / 0.4942 GB, free: 11.61 MB / 414.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.02398/0.4127, allocations: 10.24 MB / 0.5042 GB, free: 1.355 MB / 414.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.2726/0.6853, allocations: 44.02 MB / 0.5472 GB, free: 70.05 MB / 446.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.01043/0.6957, allocations: 3.831 MB / 0.5509 GB, free: 69.94 MB / 446.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.002328/0.6981, allocations: 1.628 MB / 0.5525 GB, free: 69.75 MB / 446.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.01092/0.709, allocations: 6.858 MB / 0.5592 GB, free: 67.09 MB / 446.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.75e-05/0.709, allocations: 53.16 kB / 0.5593 GB, free: 67.04 MB / 446.1 MB Notification: Performance of pre-optimization done (n=183): time 5.099e-06/0.709, allocations: 0 / 0.5593 GB, free: 67.04 MB / 446.1 MB Notification: Performance of matching and sorting (n=205): time 0.03777/0.7468, allocations: 16.02 MB / 0.5749 GB, free: 55.93 MB / 446.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0009652/0.7478, allocations: 1.586 MB / 0.5765 GB, free: 54.21 MB / 446.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.004851/0.7526, allocations: 4.211 MB / 0.5806 GB, free: 50.07 MB / 446.1 MB Notification: Performance of collectPreVariables (initialization): time 0.0003671/0.753, allocations: 57.7 kB / 0.5806 GB, free: 50.01 MB / 446.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.001509/0.7545, allocations: 3.537 MB / 0.5841 GB, free: 46.66 MB / 446.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0007129/0.7552, allocations: 0.8407 MB / 0.5849 GB, free: 45.82 MB / 446.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001431/0.7566, allocations: 1.364 MB / 0.5862 GB, free: 44.46 MB / 446.1 MB Notification: Performance of setup shared object (initialization): time 3.654e-05/0.7567, allocations: 301.1 kB / 0.5865 GB, free: 44.16 MB / 446.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002831/0.7595, allocations: 2.242 MB / 0.5887 GB, free: 41.91 MB / 446.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.004172/0.7637, allocations: 6.386 MB / 0.595 GB, free: 33.57 MB / 446.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.007913/0.7716, allocations: 9.281 MB / 0.604 GB, free: 22.38 MB / 446.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 9.409e-05/0.7717, allocations: 43.94 kB / 0.6041 GB, free: 22.34 MB / 446.1 MB Notification: Performance of matching and sorting (n=886) (initialization): time 0.0151/0.7868, allocations: 9.131 MB / 0.613 GB, free: 13.19 MB / 446.1 MB Notification: Performance of prepare postOptimizeDAE: time 7.944e-05/0.7869, allocations: 71.97 kB / 0.613 GB, free: 13.12 MB / 446.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.005158/0.792, allocations: 2.863 MB / 0.6158 GB, free: 10.24 MB / 446.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.003188/0.7952, allocations: 1.069 MB / 0.6169 GB, free: 9.16 MB / 446.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.005008/0.8002, allocations: 1.579 MB / 0.6184 GB, free: 7.578 MB / 446.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.004051/0.8043, allocations: 4.478 MB / 0.6228 GB, free: 2.875 MB / 446.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.005425/0.8097, allocations: 431.5 kB / 0.6232 GB, free: 2.453 MB / 446.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001077/0.8108, allocations: 417.7 kB / 0.6236 GB, free: 2.047 MB / 446.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 665 * Number of states: 0 () * Number of discrete variables: 45 (damper1.color_b[3],damper1.color_b[2],damper1.color_b[1],damper1.color_a[3],damper1.color_a[2],damper1.color_a[1],spring1.color[3],spring1.color[2],spring1.color[1],spring1.massColor[3],spring1.massColor[2],spring1.massColor[1],spring2.color[3],spring2.color[2],spring2.color[1],spring2.massColor[3],spring2.massColor[2],spring2.massColor[1],p2.boxColor[3],p2.boxColor[2],p2.boxColor[1],body2.sphereColor[3],body2.sphereColor[2],body2.sphereColor[1],bar2.color[3],bar2.color[2],bar2.color[1],bar1.color[3],bar1.color[2],bar1.color[1],body1.sphereColor[3],body1.sphereColor[2],body1.sphereColor[1],world.gravityArrowColor[3],world.gravityArrowColor[2],world.gravityArrowColor[1],world.axisColor_x[3],world.axisColor_x[2],world.axisColor_x[1],world.groundColor[3],world.groundColor[2],world.groundColor[1],world.gravitySphereColor[3],world.gravitySphereColor[2],world.gravitySphereColor[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (848): * Single equations (assignments): 839 * Array equations: 5 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 3 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 2 systems {(4,100.0%), (3,100.0%)} * Non-linear Jacobian (size): 1 system {4} * Without analytic Jacobian (size): 0 systems Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(2,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.00384/0.8146, allocations: 2.206 MB / 0.6258 GB, free: 15.82 MB / 462.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0009782/0.8156, allocations: 397.4 kB / 0.6261 GB, free: 15.43 MB / 462.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.007465/0.8231, allocations: 3.31 MB / 0.6294 GB, free: 12.1 MB / 462.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 0.006295/0.8293, allocations: 2.765 MB / 0.6321 GB, free: 9.312 MB / 462.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.179e-05/0.8294, allocations: 11.94 kB / 0.6321 GB, free: 9.301 MB / 462.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.183e-05/0.8294, allocations: 11.95 kB / 0.6321 GB, free: 9.289 MB / 462.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.02283/0.8522, allocations: 10.18 MB / 0.642 GB, free: 14.86 MB / 478.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.805e-05/0.8523, allocations: 12 kB / 0.642 GB, free: 14.85 MB / 478.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001687/0.854, allocations: 380.2 kB / 0.6424 GB, free: 14.48 MB / 478.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.003212/0.8572, allocations: 0.9864 MB / 0.6434 GB, free: 13.48 MB / 478.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.00026/0.8574, allocations: 63.97 kB / 0.6434 GB, free: 13.42 MB / 478.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.005909/0.8633, allocations: 4.708 MB / 0.648 GB, free: 8.488 MB / 478.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 0.001299/0.8646, allocations: 1.454 MB / 0.6495 GB, free: 6.906 MB / 478.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01115/0.8758, allocations: 5.982 MB / 0.6553 GB, free: 0.7188 MB / 478.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.001254/0.877, allocations: 385.1 kB / 0.6557 GB, free: 348 kB / 478.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0008019/0.8778, allocations: 59.98 kB / 0.6557 GB, free: 288 kB / 478.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002124/0.88, allocations: 151.8 kB / 0.6559 GB, free: 136 kB / 478.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0004814/0.8804, allocations: 180.9 kB / 0.656 GB, free: 15.96 MB / 494.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001753/0.8806, allocations: 79.91 kB / 0.6561 GB, free: 15.88 MB / 494.1 MB Notification: Performance of sorting global known variables: time 0.00452/0.8851, allocations: 2.59 MB / 0.6586 GB, free: 13.28 MB / 494.1 MB Notification: Performance of sort global known variables: time 1.8e-07/0.8851, allocations: 0 / 0.6586 GB, free: 13.28 MB / 494.1 MB Notification: Performance of remove unused functions: time 0.005787/0.8909, allocations: 1.117 MB / 0.6597 GB, free: 12.17 MB / 494.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 60 * Number of states: 14 ($STATESET1.x[3],$STATESET1.x[2],$STATESET1.x[1],body1.frame_a.r_0[1],body1.frame_a.r_0[2],body1.frame_a.r_0[3],body1.v_0[1],body1.v_0[2],body1.v_0[3],body1.w_a[1],body1.w_a[2],body1.w_a[3],p2.s,p2.v) * 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 (180): * Single equations (assignments): 173 * Array equations: 3 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 3 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 2 systems {(4,100.0%), (3,100.0%)} * Non-linear Jacobian (size): 1 system {4} * Without analytic Jacobian (size): 0 systems Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(2,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.011/0.9019, allocations: 6.675 MB / 0.6662 GB, free: 5.285 MB / 494.1 MB Notification: Performance of simCode: created initialization part: time 0.01153/0.9135, allocations: 5.592 MB / 0.6717 GB, free: 15.68 MB / 0.4981 GB Notification: Performance of simCode: created event and clocks part: time 1.223e-05/0.9135, allocations: 0 / 0.6717 GB, free: 15.68 MB / 0.4981 GB Notification: Performance of simCode: created simulation system equations: time 0.004484/0.918, allocations: 1.975 MB / 0.6736 GB, free: 13.68 MB / 0.4981 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004387/0.9223, allocations: 0.4954 MB / 0.6741 GB, free: 13.19 MB / 0.4981 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.09856/1.021, allocations: 50.8 MB / 0.7237 GB, free: 3.512 MB / 0.545 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.006087/1.027, allocations: 3.458 MB / 0.7271 GB, free: 20 kB / 0.545 GB Notification: Performance of simCode: alias equations: time 0.005697/1.033, allocations: 2.014 MB / 0.7291 GB, free: 14 MB / 0.5606 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.003636/1.036, allocations: 2.096 MB / 0.7311 GB, free: 11.9 MB / 0.5606 GB Notification: Performance of SimCode: time 9.31e-07/1.036, allocations: 0 / 0.7311 GB, free: 11.9 MB / 0.5606 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.3461/1.382, allocations: 79.05 MB / 0.8083 GB, free: 162.5 MB / 0.5606 GB Notification: Performance of buildModelFMU: Generate platform static: time 60.84/62.22, allocations: 4 kB / 0.8083 GB, free: 162.5 MB / 0.5606 GB " [Timeout remaining time 598] (rm -f Modelica_4.1.0-beta.om_Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem.pipe ; mkfifo Modelica_4.1.0-beta.om_Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem.pipe ; head -c 1048576 < Modelica_4.1.0-beta.om_Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem.pipe >> ../files/Modelica_4.1.0-beta.om_Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem.sim & python3 -m fmpy simulate --output-file Modelica_4.1.0-beta.om_Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem_res.csv --start-time 0 --stop-time 10 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.0019992 Modelica_4_1_0-beta_om_Modelica_Mechanics_MultiBody_Examples_Elementary_SpringDamperSystem.fmu > Modelica_4.1.0-beta.om_Modelica.Mechanics.MultiBody.Examples.Elementary.SpringDamperSystem.pipe 2>&1) [Timeout 52.5] [Calling os._exit(0), Time elapsed: 64.76287387590855] Failed to read output from testmodel.py, exit status != 0: ['time', 'body1.frame_a.r_0[1]', 'body1.frame_a.r_0[2]', 'body1.frame_a.r_0[3]', 'body1.v_0[1]', 'body1.v_0[2]', 'body1.v_0[3]', 'body1.w_a[1]', 'body1.w_a[2]', 'body1.w_a[3]', 'p2.s', 'p2.v'] 62.382733867969364 62.398680246 62.069314917 Calling exit ...