Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_12_Buildings.Fluid.Movers.BaseClasses.Validation.EulerReducedSpeed.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 0.001351/0.001351, allocations: 97.31 kB / 19.73 MB, free: 2.117 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 0.001594/0.001594, allocations: 220.6 kB / 23.03 MB, free: 4.918 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 1.383/1.383, allocations: 230.6 MB / 256.8 MB, free: 7.801 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.1-maint.12.x/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.1-maint.12.x/package.mo): time 3.022/3.022, allocations: 0.49 GB / 0.7959 GB, free: 35.5 MB / 0.6231 GB " [Timeout remaining time 177] Using package Buildings with version 12.1.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.1-maint.12.x/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: "" <> buildModelFMU(Buildings.Fluid.Movers.BaseClasses.Validation.EulerReducedSpeed,fileNamePrefix="Buildings_12_Buildings_Fluid_Movers_BaseClasses_Validation_EulerReducedSpeed",fmuType="cs",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.Movers.BaseClasses.Validation.EulerReducedSpeed,fileNamePrefix="Buildings_12_Buildings_Fluid_Movers_BaseClasses_Validation_EulerReducedSpeed",fmuType="cs",version="2.0",platforms={"static"}) [Timeout 300] "Notification: Buildings 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 0.001872/0.001872, allocations: 64.55 kB / 1.155 GB, free: 25.4 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3061/0.3079, allocations: 176.1 MB / 1.327 GB, free: 1.5 MB / 1.014 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Movers.BaseClasses.Validation.EulerReducedSpeed): time 0.006261/0.3142, allocations: 4.424 MB / 1.331 GB, free: 13.05 MB / 1.029 GB Notification: Performance of NFInst.instExpressions: time 0.009466/0.3237, allocations: 5.318 MB / 1.336 GB, free: 7.723 MB / 1.029 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.000763/0.3244, allocations: 31.88 kB / 1.336 GB, free: 7.691 MB / 1.029 GB Notification: Performance of NFTyping.typeComponents: time 0.004053/0.3285, allocations: 1.536 MB / 1.338 GB, free: 6.152 MB / 1.029 GB Notification: Performance of NFTyping.typeBindings: time 0.002629/0.3311, allocations: 1.202 MB / 1.339 GB, free: 4.949 MB / 1.029 GB Notification: Performance of NFTyping.typeClassSections: time 0.002604/0.3337, allocations: 1.201 MB / 1.34 GB, free: 3.746 MB / 1.029 GB Notification: Performance of NFFlatten.flatten: time 0.02424/0.358, allocations: 14.15 MB / 1.354 GB, free: 5.582 MB / 1.045 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0002772/0.3582, allocations: 83.23 kB / 1.354 GB, free: 5.484 MB / 1.045 GB Notification: Performance of NFEvalConstants.evaluate: time 0.00174/0.36, allocations: 0.9072 MB / 1.355 GB, free: 4.574 MB / 1.045 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001417/0.3614, allocations: 0.9378 MB / 1.356 GB, free: 3.633 MB / 1.045 GB Notification: Performance of NFPackage.collectConstants: time 0.0002085/0.3616, allocations: 99.98 kB / 1.356 GB, free: 3.535 MB / 1.045 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002655/0.3643, allocations: 1.408 MB / 1.357 GB, free: 2.125 MB / 1.045 GB Notification: Performance of NFScalarize.scalarize: time 0.001241/0.3655, allocations: 1.168 MB / 1.358 GB, free: 0.9531 MB / 1.045 GB Notification: Performance of NFVerifyModel.verify: time 0.0015/0.367, allocations: 0.9869 MB / 1.359 GB, free: 15.96 MB / 1.061 GB Notification: Performance of NFConvertDAE.convert: time 0.006089/0.3731, allocations: 4.012 MB / 1.363 GB, free: 11.93 MB / 1.061 GB Notification: Performance of FrontEnd - DAE generated: time 6.773e-06/0.3731, allocations: 3.984 kB / 1.363 GB, free: 11.93 MB / 1.061 GB Notification: Performance of FrontEnd: time 1.643e-06/0.3731, allocations: 0 / 1.363 GB, free: 11.93 MB / 1.061 GB Notification: Performance of Transformations before backend: time 5.531e-05/0.3732, allocations: 0 / 1.363 GB, free: 11.93 MB / 1.061 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 64 * Number of variables: 64 Notification: Performance of Generate backend data structure: time 0.006115/0.3793, allocations: 3.099 MB / 1.366 GB, free: 8.777 MB / 1.061 GB Notification: Performance of prepare preOptimizeDAE: time 4.854e-05/0.3793, allocations: 12.03 kB / 1.366 GB, free: 8.766 MB / 1.061 GB Notification: Performance of preOpt introduceOutputRealDerivatives (simulation): time 2.395e-05/0.3793, allocations: 4.656 kB / 1.366 GB, free: 8.762 MB / 1.061 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 7.581e-05/0.3794, allocations: 66.53 kB / 1.366 GB, free: 8.688 MB / 1.061 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004036/0.3835, allocations: 0.7241 MB / 1.367 GB, free: 7.961 MB / 1.061 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.007944/0.3914, allocations: 4.316 MB / 1.371 GB, free: 3.598 MB / 1.061 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.706e-05/0.3914, allocations: 36.66 kB / 1.371 GB, free: 3.562 MB / 1.061 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.00013/0.3916, allocations: 40 kB / 1.371 GB, free: 3.523 MB / 1.061 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001922/0.3935, allocations: 1.005 MB / 1.372 GB, free: 2.512 MB / 1.061 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.611e-05/0.3935, allocations: 3.938 kB / 1.372 GB, free: 2.508 MB / 1.061 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.466e-05/0.3936, allocations: 12 kB / 1.372 GB, free: 2.496 MB / 1.061 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.714e-06/0.3936, allocations: 8 kB / 1.372 GB, free: 2.488 MB / 1.061 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002253/0.3958, allocations: 0.8535 MB / 1.373 GB, free: 1.633 MB / 1.061 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.00618/0.402, allocations: 2.906 MB / 1.376 GB, free: 14.67 MB / 1.076 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002379/0.4044, allocations: 1.137 MB / 1.377 GB, free: 13.53 MB / 1.076 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001048/0.4054, allocations: 457.1 kB / 1.378 GB, free: 13.08 MB / 1.076 GB Notification: Performance of preOpt evalFunc (simulation): time 7.511e-05/0.4055, allocations: 12.28 kB / 1.378 GB, free: 13.07 MB / 1.076 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.659e-05/0.4056, allocations: 38.83 kB / 1.378 GB, free: 13.02 MB / 1.076 GB Notification: Performance of pre-optimization done (n=33): time 2.605e-06/0.4056, allocations: 0 / 1.378 GB, free: 13.02 MB / 1.076 GB Notification: Performance of matching and sorting (n=33): time 0.004178/0.4097, allocations: 1.649 MB / 1.379 GB, free: 11.36 MB / 1.076 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.2e-05/0.4098, allocations: 55.41 kB / 1.379 GB, free: 11.3 MB / 1.076 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.006149/0.4159, allocations: 3.81 MB / 1.383 GB, free: 7.492 MB / 1.076 GB Notification: Performance of collectPreVariables (initialization): time 0.000178/0.4161, allocations: 41.7 kB / 1.383 GB, free: 7.445 MB / 1.076 GB Notification: Performance of collectInitialEqns (initialization): time 0.00106/0.4172, allocations: 1.009 MB / 1.384 GB, free: 6.43 MB / 1.076 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001733/0.4173, allocations: 134.9 kB / 1.384 GB, free: 6.297 MB / 1.076 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0009177/0.4183, allocations: 0.5237 MB / 1.385 GB, free: 5.766 MB / 1.076 GB Notification: Performance of setup shared object (initialization): time 0.0001334/0.4184, allocations: 305.1 kB / 1.385 GB, free: 5.465 MB / 1.076 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002865/0.4213, allocations: 1.861 MB / 1.387 GB, free: 3.602 MB / 1.076 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.003483/0.4247, allocations: 2.545 MB / 1.389 GB, free: 0.8438 MB / 1.076 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.005915/0.4307, allocations: 3.938 MB / 1.393 GB, free: 12.75 MB / 1.092 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.485e-05/0.4307, allocations: 11.94 kB / 1.393 GB, free: 12.74 MB / 1.092 GB Notification: Performance of matching and sorting (n=305) (initialization): time 0.007716/0.4384, allocations: 4.57 MB / 1.398 GB, free: 8.164 MB / 1.092 GB Notification: Performance of prepare postOptimizeDAE: time 2.714e-05/0.4384, allocations: 8 kB / 1.398 GB, free: 8.156 MB / 1.092 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.301e-05/0.4385, allocations: 15.94 kB / 1.398 GB, free: 8.141 MB / 1.092 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.297e-05/0.4385, allocations: 20 kB / 1.398 GB, free: 8.121 MB / 1.092 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00157/0.4401, allocations: 387.5 kB / 1.398 GB, free: 7.742 MB / 1.092 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 3.122e-05/0.4401, allocations: 27.92 kB / 1.398 GB, free: 7.715 MB / 1.092 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0023/0.4424, allocations: 262.3 kB / 1.398 GB, free: 7.457 MB / 1.092 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001923/0.4426, allocations: 112 kB / 1.398 GB, free: 7.348 MB / 1.092 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.00357/0.4462, allocations: 2.191 MB / 1.4 GB, free: 5.152 MB / 1.092 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.003078/0.4492, allocations: 2.247 MB / 1.403 GB, free: 2.699 MB / 1.092 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.00505/0.4543, allocations: 3.346 MB / 1.406 GB, free: 15.2 MB / 1.107 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.001e-05/0.4543, allocations: 4 kB / 1.406 GB, free: 15.19 MB / 1.107 GB Notification: Performance of matching and sorting (n=305) (initialization_lambda0): time 0.006698/0.461, allocations: 3.97 MB / 1.41 GB, free: 11.21 MB / 1.107 GB Notification: Performance of prepare postOptimizeDAE: time 2.091e-05/0.461, allocations: 12 kB / 1.41 GB, free: 11.2 MB / 1.107 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.699e-05/0.461, allocations: 8 kB / 1.41 GB, free: 11.2 MB / 1.107 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.715e-05/0.4611, allocations: 20 kB / 1.41 GB, free: 11.18 MB / 1.107 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001569/0.4626, allocations: 379.5 kB / 1.41 GB, free: 10.8 MB / 1.107 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.678e-05/0.4626, allocations: 27.92 kB / 1.41 GB, free: 10.78 MB / 1.107 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002264/0.4649, allocations: 222.9 kB / 1.41 GB, free: 10.56 MB / 1.107 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002446/0.4652, allocations: 99.97 kB / 1.411 GB, free: 10.46 MB / 1.107 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 49 * Number of states: 0 () * Number of discrete variables: 1 (per3.haveWMot_nominal) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (189): * Single equations (assignments): 182 * Array equations: 3 * Algorithm blocks: 0 * Record equations: 4 * 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 0.0003878/0.4655, allocations: 255.8 kB / 1.411 GB, free: 10.2 MB / 1.107 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0006505/0.4662, allocations: 274 kB / 1.411 GB, free: 9.934 MB / 1.107 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002985/0.4692, allocations: 1.243 MB / 1.412 GB, free: 8.684 MB / 1.107 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.992e-06/0.4692, allocations: 4 kB / 1.412 GB, free: 8.68 MB / 1.107 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.418e-06/0.4692, allocations: 3.938 kB / 1.412 GB, free: 8.676 MB / 1.107 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 8.196e-06/0.4692, allocations: 15.92 kB / 1.412 GB, free: 8.66 MB / 1.107 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002281/0.4715, allocations: 1.255 MB / 1.414 GB, free: 7.363 MB / 1.107 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.749e-06/0.4715, allocations: 0 / 1.414 GB, free: 7.363 MB / 1.107 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0008197/0.4723, allocations: 128.1 kB / 1.414 GB, free: 7.238 MB / 1.107 GB Notification: Performance of postOpt tearingSystem (simulation): time 7.354e-06/0.4723, allocations: 0 / 1.414 GB, free: 7.238 MB / 1.107 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.529e-05/0.4724, allocations: 19.98 kB / 1.414 GB, free: 7.219 MB / 1.107 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 4.709e-06/0.4724, allocations: 0 / 1.414 GB, free: 7.219 MB / 1.107 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.493e-06/0.4724, allocations: 0 / 1.414 GB, free: 7.219 MB / 1.107 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003509/0.4759, allocations: 1.333 MB / 1.415 GB, free: 5.867 MB / 1.107 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001294/0.4772, allocations: 437.8 kB / 1.415 GB, free: 5.438 MB / 1.107 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0004107/0.4776, allocations: 4 kB / 1.415 GB, free: 5.434 MB / 1.107 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001109/0.4787, allocations: 71.92 kB / 1.415 GB, free: 5.363 MB / 1.107 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 8.522e-05/0.4788, allocations: 31.94 kB / 1.415 GB, free: 5.332 MB / 1.107 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.84e-05/0.4788, allocations: 19.98 kB / 1.416 GB, free: 5.312 MB / 1.107 GB Notification: Performance of sorting global known variables: time 0.004202/0.483, allocations: 2.571 MB / 1.418 GB, free: 2.754 MB / 1.107 GB Notification: Performance of sort global known variables: time 1.01e-07/0.483, allocations: 0 / 1.418 GB, free: 2.754 MB / 1.107 GB Notification: Performance of remove unused functions: time 0.003139/0.4862, allocations: 1.031 MB / 1.419 GB, free: 1.723 MB / 1.107 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * 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 (36): * Single equations (assignments): 36 * Array equations: 0 * 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 0.004168/0.4903, allocations: 2.224 MB / 1.421 GB, free: 15.46 MB / 1.123 GB Notification: Performance of simCode: created initialization part: time 0.007405/0.4978, allocations: 4.254 MB / 1.425 GB, free: 11.21 MB / 1.123 GB Notification: Performance of simCode: created event and clocks part: time 3.367e-06/0.4978, allocations: 0 / 1.425 GB, free: 11.21 MB / 1.123 GB Notification: Performance of simCode: created simulation system equations: time 0.001094/0.4988, allocations: 476 kB / 1.426 GB, free: 10.75 MB / 1.123 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004926/0.5038, allocations: 1.321 MB / 1.427 GB, free: 9.449 MB / 1.123 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.04359/0.5474, allocations: 27.39 MB / 1.454 GB, free: 13.59 MB / 1.154 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001475/0.5488, allocations: 1.208 MB / 1.455 GB, free: 12.34 MB / 1.154 GB Notification: Performance of simCode: alias equations: time 0.002917/0.5518, allocations: 0.7901 MB / 1.456 GB, free: 11.55 MB / 1.154 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001662/0.5534, allocations: 1.03 MB / 1.457 GB, free: 10.52 MB / 1.154 GB Notification: Performance of SimCode: time 1.172e-06/0.5534, allocations: 4 kB / 1.457 GB, free: 10.51 MB / 1.154 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.1485/0.702, allocations: 85.5 MB / 1.54 GB, free: 6.547 MB / 1.232 GB Notification: Performance of buildModelFMU: Generate platform static: time 17.55/18.25, allocations: 6.094 kB / 1.54 GB, free: 6.547 MB / 1.232 GB " [Timeout remaining time 282] (rm -f Buildings_12_Buildings.Fluid.Movers.BaseClasses.Validation.EulerReducedSpeed.pipe ; mkfifo Buildings_12_Buildings.Fluid.Movers.BaseClasses.Validation.EulerReducedSpeed.pipe ; head -c 1048576 < Buildings_12_Buildings.Fluid.Movers.BaseClasses.Validation.EulerReducedSpeed.pipe >> ../files/Buildings_12_Buildings.Fluid.Movers.BaseClasses.Validation.EulerReducedSpeed.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_12_Buildings.Fluid.Movers.BaseClasses.Validation.EulerReducedSpeed_res.mat --tempDir=temp_Buildings_12_Buildings_Fluid_Movers_BaseClasses_Validation_EulerReducedSpeed_fmu --startTime=0 --stopTime=1 --stepSize=0.0004 --timeout=400 --tolerance=1e-06 Buildings_12_Buildings_Fluid_Movers_BaseClasses_Validation_EulerReducedSpeed.fmu > Buildings_12_Buildings.Fluid.Movers.BaseClasses.Validation.EulerReducedSpeed.pipe 2>&1) [Timeout 420.0] [Calling os._exit(0), Time elapsed: 24.635041250032373] Failed to read output from testmodel.py, exit status != 0: 18.45827785797883 18.473838425 18.097693229 Calling exit ...