Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildSysPro_BuildSysPro.IBPSA.Utilities.Clustering.Validation.KMeans_2d.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 0.001178/0.001178, allocations: 80.44 kB / 19.17 MB, free: 0.7344 MB / 13.93 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 0.001517/0.001517, allocations: 165.9 kB / 22.45 MB, free: 2.098 MB / 18.57 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 0.9078/0.9078, allocations: 177.1 MB / 202.8 MB, free: 5.738 MB / 186.7 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/package.mo", uses=false) [Timeout 180] "[/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/Building/BuildingEnvelope/HeatTransfer/package.mo:2:1-40:17:writable] Warning: Soil_case_nappe was referenced in the package.order file, but was not found in package.mo, Soil_case_nappe/package.mo or Soil_case_nappe.mo. Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/package.mo): time 0.5343/0.5343, allocations: 110.2 MB / 369.4 MB, free: 12.61 MB / 346.7 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/BoundaryConditions/Scenarios/CombiTimeTable.mo:44:3-56:20:writable] Warning: External function annotation should occur on the external-clause, not on the function. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/BoundaryConditions/Scenarios/CombiTimeTable.mo:58:3-65:19:writable] Warning: External function annotation should occur on the external-clause, not on the function. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/BoundaryConditions/Scenarios/CombiTimeTable.mo:67:3-72:20:writable] Warning: External function annotation should occur on the external-clause, not on the function. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/BoundaryConditions/Scenarios/CombiTimeTable.mo:74:3-79:20:writable] Warning: External function annotation should occur on the external-clause, not on the function. " [Timeout remaining time 179] Using package BuildSysPro with version 3.6.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/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: "" <> buildModelFMU(BuildSysPro.IBPSA.Utilities.Clustering.Validation.KMeans_2d,fileNamePrefix="BuildSysPro_BuildSysPro_IBPSA_Utilities_Clustering_Validation_KMeans_2d",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(BuildSysPro.IBPSA.Utilities.Clustering.Validation.KMeans_2d,fileNamePrefix="BuildSysPro_BuildSysPro_IBPSA_Utilities_Clustering_Validation_KMeans_2d",fmuType="me",version="2.0",platforms={"static"}) [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 1.542e-06/1.542e-06, allocations: 0 / 0.5472 GB, free: 9.891 MB / 0.5105 GB Notification: Performance of FrontEnd - Absyn->SCode: time 1.618e-05/1.772e-05, allocations: 2.281 kB / 0.5472 GB, free: 9.887 MB / 0.5105 GB Notification: Performance of NFInst.instantiate(BuildSysPro.IBPSA.Utilities.Clustering.Validation.KMeans_2d): time 0.001221/0.001239, allocations: 0.5275 MB / 0.5477 GB, free: 9.363 MB / 0.5105 GB Notification: Performance of NFInst.instExpressions: time 0.002027/0.003266, allocations: 1.614 MB / 0.5493 GB, free: 7.73 MB / 0.5105 GB Notification: Performance of NFInst.updateImplicitVariability: time 3.967e-05/0.003305, allocations: 4 kB / 0.5493 GB, free: 7.727 MB / 0.5105 GB Notification: Performance of NFTyping.typeComponents: time 0.0001876/0.003493, allocations: 59.84 kB / 0.5494 GB, free: 7.668 MB / 0.5105 GB Notification: Performance of NFTyping.typeBindings: time 2.802e-05/0.003521, allocations: 39.88 kB / 0.5494 GB, free: 7.629 MB / 0.5105 GB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/Math/Random.mo:1057:5-1146:31:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initializeImpureRandom' contains a call to impure function 'Modelica.Math.Random.Utilities.initializeImpureRandom.setInternalState'. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/IBPSA/Utilities/Clustering/KMeans.mo:96:7-96:35:writable] Warning: inertia was used before it was defined (given a value). Additional such uses may exist for the variable, but some messages were suppressed. Notification: Performance of NFTyping.typeClassSections: time 0.0007523/0.004273, allocations: 251.1 kB / 0.5497 GB, free: 7.383 MB / 0.5105 GB Notification: Performance of NFFlatten.flatten: time 8.545e-05/0.004359, allocations: 31.91 kB / 0.5497 GB, free: 7.352 MB / 0.5105 GB Notification: Performance of NFFlatten.resolveConnections: time 5.109e-05/0.00441, allocations: 11.92 kB / 0.5497 GB, free: 7.34 MB / 0.5105 GB Notification: Performance of NFEvalConstants.evaluate: time 0.000427/0.004837, allocations: 27.91 kB / 0.5497 GB, free: 7.312 MB / 0.5105 GB Notification: Performance of NFSimplifyModel.simplify: time 6.76e-05/0.004904, allocations: 43.94 kB / 0.5498 GB, free: 7.27 MB / 0.5105 GB Notification: Performance of NFPackage.collectConstants: time 1.655e-05/0.004921, allocations: 0 / 0.5498 GB, free: 7.27 MB / 0.5105 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0005503/0.005471, allocations: 423.2 kB / 0.5502 GB, free: 6.855 MB / 0.5105 GB Notification: Performance of NFScalarize.scalarize: time 6.839e-05/0.00554, allocations: 31.84 kB / 0.5502 GB, free: 6.824 MB / 0.5105 GB Notification: Performance of NFVerifyModel.verify: time 2.479e-05/0.005565, allocations: 11.94 kB / 0.5502 GB, free: 6.812 MB / 0.5105 GB Notification: Performance of NFConvertDAE.convert: time 0.0003748/0.005939, allocations: 343.1 kB / 0.5505 GB, free: 6.477 MB / 0.5105 GB Notification: Performance of FrontEnd - DAE generated: time 2.955e-06/0.005942, allocations: 7.938 kB / 0.5505 GB, free: 6.469 MB / 0.5105 GB Notification: Performance of FrontEnd: time 2.004e-06/0.005944, allocations: 0 / 0.5505 GB, free: 6.469 MB / 0.5105 GB Notification: Performance of Transformations before backend: time 5.15e-06/0.005949, allocations: 4 kB / 0.5505 GB, free: 6.465 MB / 0.5105 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 1 * Number of variables: 1 Notification: Performance of Generate backend data structure: time 0.0003671/0.006317, allocations: 357.3 kB / 0.5509 GB, free: 6.086 MB / 0.5105 GB Notification: Performance of prepare preOptimizeDAE: time 4.74e-05/0.006364, allocations: 12.03 kB / 0.5509 GB, free: 6.074 MB / 0.5105 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 3.132e-05/0.006395, allocations: 30.75 kB / 0.5509 GB, free: 6.035 MB / 0.5105 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 3.178e-05/0.006427, allocations: 12.84 kB / 0.5509 GB, free: 6.023 MB / 0.5105 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0001358/0.006563, allocations: 135.4 kB / 0.5511 GB, free: 5.867 MB / 0.5105 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.099e-05/0.006574, allocations: 4.375 kB / 0.5511 GB, free: 5.863 MB / 0.5105 GB Notification: Performance of preOpt expandDerOperator (simulation): time 7.875e-06/0.006582, allocations: 384 / 0.5511 GB, free: 5.863 MB / 0.5105 GB Notification: Performance of preOpt clockPartitioning (simulation): time 8.902e-05/0.006671, allocations: 42.19 kB / 0.5511 GB, free: 5.816 MB / 0.5105 GB Notification: Performance of preOpt findStateOrder (simulation): time 8.125e-06/0.006679, allocations: 192 / 0.5511 GB, free: 5.816 MB / 0.5105 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.488e-06/0.006688, allocations: 12.06 kB / 0.5511 GB, free: 5.805 MB / 0.5105 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 5.32e-06/0.006694, allocations: 3.938 kB / 0.5511 GB, free: 5.801 MB / 0.5105 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 2.572e-05/0.006719, allocations: 16 kB / 0.5511 GB, free: 5.785 MB / 0.5105 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0001465/0.006866, allocations: 160.7 kB / 0.5513 GB, free: 5.586 MB / 0.5105 GB Notification: Performance of preOpt comSubExp (simulation): time 4.158e-05/0.006907, allocations: 22.58 kB / 0.5513 GB, free: 5.555 MB / 0.5105 GB Notification: Performance of preOpt resolveLoops (simulation): time 1.962e-05/0.006927, allocations: 16.91 kB / 0.5513 GB, free: 5.535 MB / 0.5105 GB Notification: Performance of preOpt evalFunc (simulation): time 3.684e-05/0.006964, allocations: 7.984 kB / 0.5513 GB, free: 5.527 MB / 0.5105 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.607e-05/0.00699, allocations: 34.56 kB / 0.5514 GB, free: 5.484 MB / 0.5105 GB Notification: Performance of pre-optimization done (n=1): time 9.72e-07/0.006991, allocations: 3.938 kB / 0.5514 GB, free: 5.48 MB / 0.5105 GB Notification: Performance of matching and sorting (n=1): time 0.0001426/0.007134, allocations: 69.58 kB / 0.5514 GB, free: 5.406 MB / 0.5105 GB Notification: Performance of inlineWhenForInitialization (initialization): time 2.869e-05/0.007162, allocations: 59.52 kB / 0.5515 GB, free: 5.336 MB / 0.5105 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0001385/0.007301, allocations: 210.2 kB / 0.5517 GB, free: 5.121 MB / 0.5105 GB Notification: Performance of collectPreVariables (initialization): time 1.201e-05/0.007313, allocations: 25.7 kB / 0.5517 GB, free: 5.09 MB / 0.5105 GB Notification: Performance of collectInitialEqns (initialization): time 4.236e-05/0.007355, allocations: 100.1 kB / 0.5518 GB, free: 4.988 MB / 0.5105 GB Notification: Performance of collectInitialBindings (initialization): time 9.839e-06/0.007365, allocations: 3.953 kB / 0.5518 GB, free: 4.984 MB / 0.5105 GB Notification: Performance of simplifyInitialFunctions (initialization): time 3.234e-05/0.007397, allocations: 29.7 kB / 0.5519 GB, free: 4.949 MB / 0.5105 GB Notification: Performance of setup shared object (initialization): time 8.321e-05/0.00748, allocations: 330.8 kB / 0.5522 GB, free: 4.617 MB / 0.5105 GB Notification: Performance of preBalanceInitialSystem (initialization): time 4.913e-05/0.00753, allocations: 51.97 kB / 0.5522 GB, free: 4.566 MB / 0.5105 GB Notification: Performance of partitionIndependentBlocks (initialization): time 3.583e-05/0.007565, allocations: 51.98 kB / 0.5523 GB, free: 4.516 MB / 0.5105 GB Notification: Performance of analyzeInitialSystem (initialization): time 7.198e-05/0.007637, allocations: 92.7 kB / 0.5524 GB, free: 4.422 MB / 0.5105 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.258e-06/0.007642, allocations: 4 kB / 0.5524 GB, free: 4.418 MB / 0.5105 GB Notification: Performance of matching and sorting (n=16) (initialization): time 0.0001182/0.00776, allocations: 170.4 kB / 0.5525 GB, free: 4.246 MB / 0.5105 GB Notification: Performance of prepare postOptimizeDAE: time 1.368e-05/0.007773, allocations: 6.656 kB / 0.5525 GB, free: 4.242 MB / 0.5105 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.211e-05/0.007786, allocations: 0 / 0.5525 GB, free: 4.242 MB / 0.5105 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.135e-05/0.007797, allocations: 3.938 kB / 0.5525 GB, free: 4.238 MB / 0.5105 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 1.32e-05/0.00781, allocations: 4 kB / 0.5525 GB, free: 4.234 MB / 0.5105 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 4.749e-06/0.007815, allocations: 0 / 0.5525 GB, free: 4.234 MB / 0.5105 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 1.686e-05/0.007832, allocations: 7.906 kB / 0.5525 GB, free: 4.227 MB / 0.5105 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.546e-06/0.00784, allocations: 4 kB / 0.5526 GB, free: 4.223 MB / 0.5105 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 10 (cluster_size[3],cluster_size[2],cluster_size[1],labels[6],labels[5],labels[4],labels[3],labels[2],labels[1],cmp) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (2): * Single equations (assignments): 1 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 1 * 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 0.0001091/0.007949, allocations: 136.8 kB / 0.5527 GB, free: 4.082 MB / 0.5105 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 6.502e-06/0.007956, allocations: 11.98 kB / 0.5527 GB, free: 4.07 MB / 0.5105 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 9.251e-05/0.008048, allocations: 70.11 kB / 0.5528 GB, free: 3.992 MB / 0.5105 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.254e-06/0.008051, allocations: 3.938 kB / 0.5528 GB, free: 3.988 MB / 0.5105 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.08e-06/0.008056, allocations: 0 / 0.5528 GB, free: 3.988 MB / 0.5105 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.715e-06/0.008058, allocations: 0 / 0.5528 GB, free: 3.988 MB / 0.5105 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 9.189e-05/0.00815, allocations: 148.7 kB / 0.5529 GB, free: 3.801 MB / 0.5105 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.61e-07/0.008151, allocations: 0 / 0.5529 GB, free: 3.801 MB / 0.5105 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 2.736e-06/0.008154, allocations: 3.938 kB / 0.5529 GB, free: 3.797 MB / 0.5105 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.372e-06/0.008155, allocations: 0 / 0.5529 GB, free: 3.797 MB / 0.5105 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.034e-06/0.008162, allocations: 0 / 0.5529 GB, free: 3.797 MB / 0.5105 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.603e-06/0.008164, allocations: 7.969 kB / 0.5529 GB, free: 3.789 MB / 0.5105 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.294e-06/0.008166, allocations: 7.984 kB / 0.5529 GB, free: 3.781 MB / 0.5105 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 6.371e-05/0.00823, allocations: 96.89 kB / 0.553 GB, free: 3.668 MB / 0.5105 GB Notification: Performance of postOpt removeConstants (simulation): time 1.094e-05/0.008241, allocations: 7.906 kB / 0.553 GB, free: 3.66 MB / 0.5105 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 1.093e-05/0.008252, allocations: 4 kB / 0.553 GB, free: 3.656 MB / 0.5105 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 8.046e-06/0.00826, allocations: 3.938 kB / 0.553 GB, free: 3.652 MB / 0.5105 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 1.103e-05/0.008271, allocations: 0 / 0.553 GB, free: 3.652 MB / 0.5105 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.754e-06/0.008273, allocations: 0 / 0.553 GB, free: 3.652 MB / 0.5105 GB Notification: Performance of sorting global known variables: time 7.48e-05/0.008347, allocations: 152.3 kB / 0.5532 GB, free: 3.504 MB / 0.5105 GB Notification: Performance of sort global known variables: time 6e-08/0.008347, allocations: 0 / 0.5532 GB, free: 3.504 MB / 0.5105 GB Notification: Performance of remove unused functions: time 0.000209/0.008556, allocations: 91.83 kB / 0.5533 GB, free: 3.414 MB / 0.5105 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 1 (cmp) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (1): * Single equations (assignments): 1 * 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 0.0005441/0.009101, allocations: 0.7549 MB / 0.554 GB, free: 2.648 MB / 0.5105 GB Notification: Performance of simCode: created initialization part: time 0.0001423/0.009243, allocations: 117.6 kB / 0.5541 GB, free: 2.527 MB / 0.5105 GB Notification: Performance of simCode: created event and clocks part: time 1.583e-06/0.009244, allocations: 12.03 kB / 0.5541 GB, free: 2.516 MB / 0.5105 GB Notification: Performance of simCode: created simulation system equations: time 1.033e-05/0.009255, allocations: 8 kB / 0.5541 GB, free: 2.508 MB / 0.5105 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0001109/0.009366, allocations: 7.938 kB / 0.5541 GB, free: 2.5 MB / 0.5105 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00123/0.0106, allocations: 1.83 MB / 0.5559 GB, free: 0.5898 MB / 0.5105 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 5.821e-05/0.01065, allocations: 88.31 kB / 0.556 GB, free: 492 kB / 0.5105 GB Notification: Performance of simCode: alias equations: time 1.647e-05/0.01067, allocations: 0 / 0.556 GB, free: 492 kB / 0.5105 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 3.68e-05/0.01071, allocations: 32.48 kB / 0.556 GB, free: 460 kB / 0.5105 GB Notification: Performance of SimCode: time 9.22e-07/0.01071, allocations: 0 / 0.556 GB, free: 460 kB / 0.5105 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.01877/0.02947, allocations: 4.545 MB / 0.5605 GB, free: 12.04 MB / 0.5261 GB Notification: Performance of buildModelFMU: Generate platform static: time 6.991/7.021, allocations: 15.97 kB / 0.5605 GB, free: 12.03 MB / 0.5261 GB " [Timeout remaining time 653] (rm -f BuildSysPro_BuildSysPro.IBPSA.Utilities.Clustering.Validation.KMeans_2d.pipe ; mkfifo BuildSysPro_BuildSysPro.IBPSA.Utilities.Clustering.Validation.KMeans_2d.pipe ; head -c 1048576 < BuildSysPro_BuildSysPro.IBPSA.Utilities.Clustering.Validation.KMeans_2d.pipe >> ../files/BuildSysPro_BuildSysPro.IBPSA.Utilities.Clustering.Validation.KMeans_2d.sim & python3 -m fmpy simulate --output-file BuildSysPro_BuildSysPro.IBPSA.Utilities.Clustering.Validation.KMeans_2d_res.csv --start-time 0 --stop-time 1 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.0004 BuildSysPro_BuildSysPro_IBPSA_Utilities_Clustering_Validation_KMeans_2d.fmu > BuildSysPro_BuildSysPro.IBPSA.Utilities.Clustering.Validation.KMeans_2d.pipe 2>&1) [Timeout 52.5] [Calling sys.exit(0), Time elapsed: 9.615421641618013] Failed to read output from testmodel.py, exit status != 0: 7.100918360054493 7.109979871 7.102110858 Calling exit ...