Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ModelicaTest_4.1.0-beta.om_ModelicaTest.MultiBody.Forces.Damper.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 0.001617/0.001617, allocations: 106.5 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 0.001951/0.001951, allocations: 212.4 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 1.377/1.377, allocations: 230.5 MB / 258.2 MB, free: 8.039 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 0.2194/0.2194, allocations: 46.93 MB / 361.6 MB, free: 4.297 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.MultiBody.Forces.Damper,fileNamePrefix="ModelicaTest_4_1_0-beta_om_ModelicaTest_MultiBody_Forces_Damper",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(ModelicaTest.MultiBody.Forces.Damper,fileNamePrefix="ModelicaTest_4_1_0-beta_om_ModelicaTest_MultiBody_Forces_Damper",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 0.002258/0.002258, allocations: 79.86 kB / 0.497 GB, free: 7.781 MB / 366.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3173/0.3196, allocations: 66.09 MB / 0.5615 GB, free: 4.309 MB / 398.1 MB Notification: Performance of NFInst.instantiate(ModelicaTest.MultiBody.Forces.Damper): time 0.01831/0.3379, allocations: 16.19 MB / 0.5773 GB, free: 4.047 MB / 414.1 MB Notification: Performance of NFInst.instExpressions: time 0.01126/0.3492, allocations: 5.036 MB / 0.5823 GB, free: 14.99 MB / 430.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.003289/0.3524, allocations: 115.5 kB / 0.5824 GB, free: 14.88 MB / 430.1 MB Notification: Performance of NFTyping.typeComponents: time 0.01008/0.3625, allocations: 5.241 MB / 0.5875 GB, free: 9.621 MB / 430.1 MB Notification: Performance of NFTyping.typeBindings: time 0.008218/0.3707, allocations: 2.548 MB / 0.59 GB, free: 7.062 MB / 430.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.003108/0.3739, allocations: 1.182 MB / 0.5911 GB, free: 5.879 MB / 430.1 MB Notification: Performance of NFFlatten.flatten: time 0.01185/0.3857, allocations: 6.662 MB / 0.5976 GB, free: 15.2 MB / 446.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.007419/0.3931, allocations: 5.051 MB / 0.6026 GB, free: 10.07 MB / 446.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.00516/0.3983, allocations: 2.629 MB / 0.6051 GB, free: 7.43 MB / 446.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.006349/0.4046, allocations: 3.945 MB / 0.609 GB, free: 3.473 MB / 446.1 MB Notification: Performance of NFPackage.collectConstants: time 0.001972/0.4066, allocations: 0.5703 MB / 0.6095 GB, free: 2.902 MB / 446.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.00331/0.4099, allocations: 1.303 MB / 0.6108 GB, free: 1.598 MB / 446.1 MB Notification: Performance of NFScalarize.scalarize: time 0.004176/0.4141, allocations: 3.296 MB / 0.614 GB, free: 14.29 MB / 462.1 MB Notification: Performance of NFVerifyModel.verify: time 0.005665/0.4198, allocations: 3.67 MB / 0.6176 GB, free: 10.6 MB / 462.1 MB Notification: Performance of NFConvertDAE.convert: time 0.01433/0.4341, allocations: 11.16 MB / 0.6285 GB, free: 15.39 MB / 478.1 MB Notification: Performance of FrontEnd - DAE generated: time 5.42e-06/0.4341, allocations: 0 / 0.6285 GB, free: 15.39 MB / 478.1 MB Notification: Performance of FrontEnd: time 1.823e-06/0.4341, allocations: 3.938 kB / 0.6285 GB, free: 15.39 MB / 478.1 MB Notification: Performance of Transformations before backend: time 0.0004285/0.4345, allocations: 0 / 0.6285 GB, free: 15.39 MB / 478.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 2520 * Number of variables: 2520 Notification: Performance of Generate backend data structure: time 0.01787/0.4524, allocations: 7.737 MB / 0.6361 GB, free: 7.582 MB / 478.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.649e-05/0.4524, allocations: 8.031 kB / 0.6361 GB, free: 7.574 MB / 478.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.002913/0.4554, allocations: 1.19 MB / 0.6372 GB, free: 6.375 MB / 478.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01065/0.466, allocations: 2.672 MB / 0.6399 GB, free: 3.695 MB / 478.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.009234/0.4752, allocations: 4.169 MB / 0.6439 GB, free: 15.47 MB / 494.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0004626/0.4757, allocations: 435 kB / 0.6443 GB, free: 15.05 MB / 494.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.001958/0.4777, allocations: 0.5505 MB / 0.6449 GB, free: 14.5 MB / 494.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.04203/0.5197, allocations: 19.75 MB / 0.6642 GB, free: 9.613 MB / 0.4981 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0002113/0.5199, allocations: 63.45 kB / 0.6642 GB, free: 9.551 MB / 0.4981 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0009887/0.5209, allocations: 271.8 kB / 0.6645 GB, free: 9.285 MB / 0.4981 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.005061/0.5259, allocations: 3.153 MB / 0.6676 GB, free: 6.125 MB / 0.4981 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.03844/0.5644, allocations: 15.86 MB / 0.683 GB, free: 6.246 MB / 0.5137 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.6493/1.214, allocations: 63.91 MB / 0.7455 GB, free: 110.9 MB / 0.5607 GB Notification: Performance of preOpt comSubExp (simulation): time 0.02076/1.234, allocations: 5.681 MB / 0.751 GB, free: 110.8 MB / 0.5607 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.002954/1.237, allocations: 1.896 MB / 0.7529 GB, free: 110.8 MB / 0.5607 GB Notification: Performance of preOpt evalFunc (simulation): time 0.01407/1.251, allocations: 7.985 MB / 0.7607 GB, free: 108.8 MB / 0.5607 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.747e-05/1.251, allocations: 61.44 kB / 0.7607 GB, free: 108.8 MB / 0.5607 GB Notification: Performance of pre-optimization done (n=257): time 5.2e-06/1.251, allocations: 0 / 0.7607 GB, free: 108.8 MB / 0.5607 GB Notification: Performance of matching and sorting (n=291): time 0.05087/1.302, allocations: 21.61 MB / 0.7818 GB, free: 92.41 MB / 0.5607 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.739e-05/1.302, allocations: 154.5 kB / 0.782 GB, free: 92.23 MB / 0.5607 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.006363/1.309, allocations: 5.798 MB / 0.7876 GB, free: 86.57 MB / 0.5607 GB Notification: Performance of collectPreVariables (initialization): time 0.0004408/1.309, allocations: 65.7 kB / 0.7877 GB, free: 86.5 MB / 0.5607 GB Notification: Performance of collectInitialEqns (initialization): time 0.001966/1.311, allocations: 5.027 MB / 0.7926 GB, free: 81.73 MB / 0.5607 GB Notification: Performance of collectInitialBindings (initialization): time 0.0008356/1.312, allocations: 1.168 MB / 0.7937 GB, free: 80.58 MB / 0.5607 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001577/1.314, allocations: 1.811 MB / 0.7955 GB, free: 78.75 MB / 0.5607 GB Notification: Performance of setup shared object (initialization): time 4.11e-05/1.314, allocations: 309.2 kB / 0.7958 GB, free: 78.45 MB / 0.5607 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.003229/1.317, allocations: 2.616 MB / 0.7984 GB, free: 75.84 MB / 0.5607 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0048/1.322, allocations: 8.166 MB / 0.8063 GB, free: 65.1 MB / 0.5607 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.01026/1.332, allocations: 11.71 MB / 0.8178 GB, free: 50.93 MB / 0.5607 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.0001858/1.332, allocations: 56 kB / 0.8178 GB, free: 50.87 MB / 0.5607 GB Notification: Performance of matching and sorting (n=1195) (initialization): time 0.01713/1.349, allocations: 10.51 MB / 0.8281 GB, free: 40.36 MB / 0.5607 GB Notification: Performance of prepare postOptimizeDAE: time 9.992e-05/1.349, allocations: 88 kB / 0.8282 GB, free: 40.27 MB / 0.5607 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0001744/1.35, allocations: 196 kB / 0.8284 GB, free: 40.08 MB / 0.5607 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0001708/1.35, allocations: 272 kB / 0.8286 GB, free: 39.82 MB / 0.5607 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.006135/1.356, allocations: 2.191 MB / 0.8308 GB, free: 37.62 MB / 0.5607 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0001916/1.356, allocations: 386.5 kB / 0.8311 GB, free: 37.24 MB / 0.5607 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.005725/1.362, allocations: 451.6 kB / 0.8316 GB, free: 36.8 MB / 0.5607 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001229/1.363, allocations: 0.5426 MB / 0.8321 GB, free: 36.26 MB / 0.5607 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 895 * Number of states: 0 () * Number of discrete variables: 78 (force2.forceArrow.twoHeadedArrow,force2.forceArrow.headAtOrigin,force1.forceArrow.twoHeadedArrow,force1.forceArrow.headAtOrigin,force.forceArrow.twoHeadedArrow,force.forceArrow.headAtOrigin,fixedTranslation1.color[3],fixedTranslation1.color[2],fixedTranslation1.color[1],fixedTranslation.color[3],fixedTranslation.color[2],fixedTranslation.color[1],body2.sphereColor[3],body2.sphereColor[2],body2.sphereColor[1],force2.connectionLineColor[3],force2.connectionLineColor[2],force2.connectionLineColor[1],force2.forceColor[3],force2.forceColor[2],force2.forceColor[1],prismatic2.boxColor[3],prismatic2.boxColor[2],prismatic2.boxColor[1],damper2.color_b[3],damper2.color_b[2],damper2.color_b[1],damper2.color_a[3],damper2.color_a[2],damper2.color_a[1],body1.sphereColor[3],body1.sphereColor[2],body1.sphereColor[1],force1.connectionLineColor[3],force1.connectionLineColor[2],force1.connectionLineColor[1],force1.forceColor[3],force1.forceColor[2],force1.forceColor[1],prismatic1.boxColor[3],prismatic1.boxColor[2],prismatic1.boxColor[1],damper1.color_b[3],damper1.color_b[2],damper1.color_b[1],damper1.color_a[3],damper1.color_a[2],damper1.color_a[1],body.sphereColor[3],body.sphereColor[2],body.sphereColor[1],force.connectionLineColor[3],force.connectionLineColor[2],force.connectionLineColor[1],force.forceColor[3],force.forceColor[2],force.forceColor[1],prismatic.boxColor[3],prismatic.boxColor[2],prismatic.boxColor[1],damper.color_b[3],damper.color_b[2],damper.color_b[1],damper.color_a[3],damper.color_a[2],damper.color_a[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 (1171): * Single equations (assignments): 1168 * Array equations: 3 * 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 0.004891/1.368, allocations: 3.142 MB / 0.8352 GB, free: 33.11 MB / 0.5607 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0009863/1.369, allocations: 0.5471 MB / 0.8357 GB, free: 32.56 MB / 0.5607 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004843/1.374, allocations: 2.991 MB / 0.8386 GB, free: 29.55 MB / 0.5607 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.966e-05/1.374, allocations: 28 kB / 0.8386 GB, free: 29.52 MB / 0.5607 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.197e-05/1.374, allocations: 8 kB / 0.8386 GB, free: 29.51 MB / 0.5607 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.148e-05/1.374, allocations: 19.88 kB / 0.8387 GB, free: 29.49 MB / 0.5607 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01625/1.39, allocations: 12.23 MB / 0.8506 GB, free: 16.79 MB / 0.5607 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.961e-05/1.39, allocations: 32 kB / 0.8506 GB, free: 16.76 MB / 0.5607 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001762/1.392, allocations: 0.5464 MB / 0.8512 GB, free: 16.21 MB / 0.5607 GB Notification: Performance of postOpt tearingSystem (simulation): time 2.896e-05/1.392, allocations: 47.94 kB / 0.8512 GB, free: 16.16 MB / 0.5607 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001239/1.392, allocations: 95.59 kB / 0.8513 GB, free: 16.07 MB / 0.5607 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 2.964e-05/1.392, allocations: 67.22 kB / 0.8514 GB, free: 16.01 MB / 0.5607 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.813e-05/1.392, allocations: 51.75 kB / 0.8514 GB, free: 15.96 MB / 0.5607 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.005331/1.397, allocations: 5.633 MB / 0.8569 GB, free: 9.793 MB / 0.5607 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001175/1.398, allocations: 0.5314 MB / 0.8574 GB, free: 9.258 MB / 0.5607 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000491/1.399, allocations: 91.97 kB / 0.8575 GB, free: 9.168 MB / 0.5607 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001744/1.401, allocations: 139.8 kB / 0.8577 GB, free: 9.031 MB / 0.5607 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002428/1.401, allocations: 279.8 kB / 0.8579 GB, free: 8.758 MB / 0.5607 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001295/1.401, allocations: 120 kB / 0.858 GB, free: 8.641 MB / 0.5607 GB Notification: Performance of sorting global known variables: time 0.004398/1.405, allocations: 3.59 MB / 0.8616 GB, free: 5.082 MB / 0.5607 GB Notification: Performance of sort global known variables: time 9.1e-08/1.405, allocations: 0 / 0.8616 GB, free: 5.082 MB / 0.5607 GB Notification: Performance of remove unused functions: time 0.006767/1.412, allocations: 1.402 MB / 0.8629 GB, free: 3.684 MB / 0.5607 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 142 * Number of states: 7 (body.frame_a.r_0[1],body.v_0[1],prismatic1.s,prismatic1.v,heatCapacitor.T,prismatic2.s,prismatic2.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 (275): * Single equations (assignments): 272 * Array equations: 3 * 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 Backend phase and start with SimCode phase: time 0.007187/1.419, allocations: 6.352 MB / 0.8691 GB, free: 12.79 MB / 0.5763 GB Notification: Performance of simCode: created initialization part: time 0.01057/1.43, allocations: 5.789 MB / 0.8748 GB, free: 7.039 MB / 0.5763 GB Notification: Performance of simCode: created event and clocks part: time 2.607e-05/1.43, allocations: 8.062 kB / 0.8748 GB, free: 7.031 MB / 0.5763 GB Notification: Performance of simCode: created simulation system equations: time 0.002337/1.432, allocations: 1.293 MB / 0.8761 GB, free: 5.742 MB / 0.5763 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004278/1.437, allocations: 0.7413 MB / 0.8768 GB, free: 5.016 MB / 0.5763 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.1042/1.541, allocations: 67.68 MB / 0.9429 GB, free: 7.324 MB / 0.6544 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.006548/1.547, allocations: 4.756 MB / 0.9475 GB, free: 2.539 MB / 0.6544 GB Notification: Performance of simCode: alias equations: time 0.006584/1.554, allocations: 2.571 MB / 0.95 GB, free: 15.96 MB / 0.67 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.00527/1.559, allocations: 3.198 MB / 0.9531 GB, free: 12.76 MB / 0.67 GB Notification: Performance of SimCode: time 1.312e-06/1.559, allocations: 0 / 0.9531 GB, free: 12.76 MB / 0.67 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.4345/1.994, allocations: 96.71 MB / 1.048 GB, free: 244.8 MB / 0.7013 GB Notification: Performance of buildModelFMU: Generate platform static: time 23.14/25.13, allocations: 12.06 kB / 1.048 GB, free: 244.8 MB / 0.7013 GB " [Timeout remaining time 635] (rm -f ModelicaTest_4.1.0-beta.om_ModelicaTest.MultiBody.Forces.Damper.pipe ; mkfifo ModelicaTest_4.1.0-beta.om_ModelicaTest.MultiBody.Forces.Damper.pipe ; head -c 1048576 < ModelicaTest_4.1.0-beta.om_ModelicaTest.MultiBody.Forces.Damper.pipe >> ../files/ModelicaTest_4.1.0-beta.om_ModelicaTest.MultiBody.Forces.Damper.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=ModelicaTest_4.1.0-beta.om_ModelicaTest.MultiBody.Forces.Damper_res.mat --tempDir=temp_ModelicaTest_4_1_0-beta_om_ModelicaTest_MultiBody_Forces_Damper_fmu --startTime=0 --stopTime=7 --stepSize=0.00139944 --timeout=50 --tolerance=1e-06 ModelicaTest_4_1_0-beta_om_ModelicaTest_MultiBody_Forces_Damper.fmu > ModelicaTest_4.1.0-beta.om_ModelicaTest.MultiBody.Forces.Damper.pipe 2>&1) [Timeout 52.5] [Calling os._exit(0), Time elapsed: 28.00747651513666] Failed to read output from testmodel.py, exit status != 0: ['time', 'body.frame_a.r_0[1]', 'body.v_0[1]', 'heatCapacitor.T', 'prismatic1.s', 'prismatic1.v', 'prismatic2.s', 'prismatic2.v'] 25.270302680321038 25.281366437 24.844514505 Calling exit ...