Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Fluid.Sources.Examples.MassFlowSource_WeatherData.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 0.000882/0.000882, allocations: 72.45 kB / 19.92 MB, free: 4.629 MB / 18.57 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 0.0008367/0.0008367, allocations: 169.9 kB / 23.21 MB, free: 1.348 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 0.8991/0.8991, allocations: 177.1 MB / 203.5 MB, free: 5.727 MB / 186.7 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA master/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA master/package.mo): time 0.587/0.587, allocations: 114 MB / 373.9 MB, free: 8.691 MB / 346.7 MB " [Timeout remaining time 179] Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA master/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(IBPSA.Fluid.Sources.Examples.MassFlowSource_WeatherData,fileNamePrefix="IBPSA_latest_IBPSA_Fluid_Sources_Examples_MassFlowSource_WeatherData",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(IBPSA.Fluid.Sources.Examples.MassFlowSource_WeatherData,fileNamePrefix="IBPSA_latest_IBPSA_Fluid_Sources_Examples_MassFlowSource_WeatherData",fmuType="me",version="2.0",platforms={"static"}) [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 1.503e-06/1.503e-06, allocations: 0 / 0.5542 GB, free: 1.695 MB / 474.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 2.146e-05/2.296e-05, allocations: 2.281 kB / 0.5542 GB, free: 1.691 MB / 474.7 MB Notification: Performance of NFInst.instantiate(IBPSA.Fluid.Sources.Examples.MassFlowSource_WeatherData): time 0.436/0.436, allocations: 155.9 MB / 0.7064 GB, free: 4.262 MB / 0.5573 GB Notification: Performance of NFInst.instExpressions: time 0.01161/0.4476, allocations: 12.02 MB / 0.7182 GB, free: 14.51 MB / 0.573 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001353/0.449, allocations: 39.38 kB / 0.7182 GB, free: 14.49 MB / 0.573 GB Notification: Performance of NFTyping.typeComponents: time 0.001215/0.4502, allocations: 482.4 kB / 0.7187 GB, free: 14.18 MB / 0.573 GB Notification: Performance of NFTyping.typeBindings: time 0.002971/0.4531, allocations: 1.085 MB / 0.7197 GB, free: 13.35 MB / 0.573 GB Notification: Performance of NFTyping.typeClassSections: time 0.004344/0.4575, allocations: 1.949 MB / 0.7216 GB, free: 11.89 MB / 0.573 GB Notification: Performance of NFFlatten.flatten: time 0.003054/0.4605, allocations: 2.607 MB / 0.7242 GB, free: 10.29 MB / 0.573 GB Notification: Performance of NFFlatten.resolveConnections: time 0.00169/0.4622, allocations: 1.2 MB / 0.7253 GB, free: 9.391 MB / 0.573 GB Notification: Performance of NFEvalConstants.evaluate: time 0.004244/0.4665, allocations: 2.07 MB / 0.7274 GB, free: 8.102 MB / 0.573 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001173/0.4676, allocations: 0.7265 MB / 0.7281 GB, free: 7.672 MB / 0.573 GB Notification: Performance of NFPackage.collectConstants: time 0.0002696/0.4679, allocations: 181.2 kB / 0.7282 GB, free: 7.672 MB / 0.573 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002325/0.4702, allocations: 1.3 MB / 0.7295 GB, free: 7.059 MB / 0.573 GB Notification: Performance of NFScalarize.scalarize: time 0.0003638/0.4706, allocations: 0.5276 MB / 0.73 GB, free: 6.648 MB / 0.573 GB Notification: Performance of NFVerifyModel.verify: time 0.0006951/0.4713, allocations: 0.6102 MB / 0.7306 GB, free: 6.305 MB / 0.573 GB Notification: Performance of NFConvertDAE.convert: time 0.003774/0.4751, allocations: 3.019 MB / 0.7336 GB, free: 4.242 MB / 0.573 GB Notification: Performance of FrontEnd - DAE generated: time 5.19e-06/0.4751, allocations: 0 / 0.7336 GB, free: 4.242 MB / 0.573 GB Notification: Performance of FrontEnd: time 1.513e-06/0.4751, allocations: 0 / 0.7336 GB, free: 4.242 MB / 0.573 GB Notification: Performance of Transformations before backend: time 2.769e-05/0.4751, allocations: 7.938 kB / 0.7336 GB, free: 4.234 MB / 0.573 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 351 * Number of variables: 351 Notification: Performance of Generate backend data structure: time 0.002917/0.478, allocations: 2.035 MB / 0.7356 GB, free: 2.715 MB / 0.573 GB Notification: Performance of prepare preOptimizeDAE: time 4.576e-05/0.4781, allocations: 8.281 kB / 0.7356 GB, free: 2.715 MB / 0.573 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001833/0.4783, allocations: 209.7 kB / 0.7358 GB, free: 2.551 MB / 0.573 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001785/0.48, allocations: 471.4 kB / 0.7362 GB, free: 2.336 MB / 0.573 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001513/0.4816, allocations: 0.971 MB / 0.7372 GB, free: 1.602 MB / 0.573 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 8.306e-05/0.4816, allocations: 108.6 kB / 0.7373 GB, free: 1.551 MB / 0.573 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001258/0.4818, allocations: 141.6 kB / 0.7374 GB, free: 1.504 MB / 0.573 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0022/0.484, allocations: 2.051 MB / 0.7394 GB, free: 15.89 MB / 0.5886 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.185e-05/0.484, allocations: 0 / 0.7394 GB, free: 15.89 MB / 0.5886 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.064e-05/0.4841, allocations: 60.22 kB / 0.7395 GB, free: 15.85 MB / 0.5886 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.874e-05/0.4841, allocations: 34 kB / 0.7395 GB, free: 15.85 MB / 0.5886 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001747/0.4858, allocations: 1.551 MB / 0.741 GB, free: 15.07 MB / 0.5886 GB Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts. Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.004873/0.4907, allocations: 4.027 MB / 0.7449 GB, free: 12.07 MB / 0.5886 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001599/0.4923, allocations: 1.192 MB / 0.7461 GB, free: 11.46 MB / 0.5886 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005416/0.4929, allocations: 464.4 kB / 0.7466 GB, free: 11.23 MB / 0.5886 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0003567/0.4932, allocations: 118.1 kB / 0.7467 GB, free: 11.18 MB / 0.5886 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001089/0.4943, allocations: 1.063 MB / 0.7477 GB, free: 10.3 MB / 0.5886 GB Notification: Performance of pre-optimization done (n=115): time 3.186e-06/0.4943, allocations: 0 / 0.7477 GB, free: 10.3 MB / 0.5886 GB Notification: Performance of matching and sorting (n=115): time 0.002709/0.497, allocations: 1.628 MB / 0.7493 GB, free: 9.504 MB / 0.5886 GB Notification: Performance of inlineWhenForInitialization (initialization): time 8.533e-05/0.4971, allocations: 202.2 kB / 0.7495 GB, free: 9.277 MB / 0.5886 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0009086/0.498, allocations: 0.9259 MB / 0.7504 GB, free: 8.746 MB / 0.5886 GB Notification: Performance of collectPreVariables (initialization): time 9.246e-05/0.4981, allocations: 56.14 kB / 0.7504 GB, free: 8.695 MB / 0.5886 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003747/0.4985, allocations: 0.6038 MB / 0.751 GB, free: 8.16 MB / 0.5886 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002391/0.4987, allocations: 388.8 kB / 0.7514 GB, free: 7.824 MB / 0.5886 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002216/0.4989, allocations: 213.7 kB / 0.7516 GB, free: 7.695 MB / 0.5886 GB Notification: Performance of setup shared object (initialization): time 9.585e-05/0.499, allocations: 352.4 kB / 0.7519 GB, free: 7.355 MB / 0.5886 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004991/0.4995, allocations: 404.6 kB / 0.7523 GB, free: 7.16 MB / 0.5886 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0006613/0.5002, allocations: 0.7695 MB / 0.7531 GB, free: 6.523 MB / 0.5886 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001109/0.5013, allocations: 0.9753 MB / 0.754 GB, free: 5.949 MB / 0.5886 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.679e-06/0.5013, allocations: 3.219 kB / 0.754 GB, free: 5.949 MB / 0.5886 GB Notification: Performance of matching and sorting (n=138) (initialization): time 0.001775/0.5031, allocations: 1.256 MB / 0.7553 GB, free: 5.316 MB / 0.5886 GB Notification: Performance of prepare postOptimizeDAE: time 2.372e-05/0.5031, allocations: 8.031 kB / 0.7553 GB, free: 5.316 MB / 0.5886 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.058e-05/0.5031, allocations: 2.531 kB / 0.7553 GB, free: 5.316 MB / 0.5886 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0003202/0.5034, allocations: 88.8 kB / 0.7554 GB, free: 5.273 MB / 0.5886 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005978/0.504, allocations: 252.7 kB / 0.7556 GB, free: 5.211 MB / 0.5886 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001481/0.5055, allocations: 1.541 MB / 0.7571 GB, free: 3.57 MB / 0.5886 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007894/0.5063, allocations: 144 kB / 0.7572 GB, free: 3.43 MB / 0.5886 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.25e-05/0.5064, allocations: 47.97 kB / 0.7573 GB, free: 3.383 MB / 0.5886 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 14 * Number of states: 0 () * Number of discrete variables: 25 (weaDat.decAng.k,$PRE.weaDat.decAng.k,weaDat.decAng.tNext,$PRE.weaDat.decAng.tNext,weaDat.eqnTim.k,$PRE.weaDat.eqnTim.k,weaDat.eqnTim.tNext,$PRE.weaDat.eqnTim.tNext,weaDat.conTim.k,$PRE.weaDat.conTim.k,weaDat.conTim.tNext,$PRE.weaDat.conTim.tNext,weaDat.conTimMin.k,$PRE.weaDat.conTimMin.k,weaDat.conTimMin.tNext,$PRE.weaDat.conTimMin.tNext,weaDat.locTim.k,$PRE.weaDat.locTim.k,weaDat.locTim.tNext,$PRE.weaDat.locTim.tNext,$whenCondition1,$whenCondition2,$whenCondition3,$whenCondition4,$whenCondition5) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (136): * Single equations (assignments): 135 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * 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): 1 system {(1,2)} Notification: Performance of prepare postOptimizeDAE: time 0.0007835/0.5071, allocations: 352.2 kB / 0.7576 GB, free: 3.027 MB / 0.5886 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002121/0.5074, allocations: 131.2 kB / 0.7577 GB, free: 2.898 MB / 0.5886 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001958/0.5093, allocations: 1.468 MB / 0.7592 GB, free: 1.418 MB / 0.5886 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.125e-06/0.5093, allocations: 12 kB / 0.7592 GB, free: 1.406 MB / 0.5886 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.779e-06/0.5093, allocations: 7.984 kB / 0.7592 GB, free: 1.398 MB / 0.5886 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 8.946e-06/0.5093, allocations: 7.984 kB / 0.7592 GB, free: 1.391 MB / 0.5886 GB Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts. Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003561/0.5129, allocations: 2.76 MB / 0.7619 GB, free: 14.57 MB / 0.6042 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.727e-06/0.5129, allocations: 0 / 0.7619 GB, free: 14.57 MB / 0.6042 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0005239/0.5134, allocations: 215.8 kB / 0.7621 GB, free: 14.36 MB / 0.6042 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0002291/0.5137, allocations: 84.66 kB / 0.7622 GB, free: 14.28 MB / 0.6042 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.383e-05/0.5137, allocations: 31.97 kB / 0.7622 GB, free: 14.25 MB / 0.6042 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001279/0.515, allocations: 1.555 MB / 0.7637 GB, free: 12.57 MB / 0.6042 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.377e-06/0.515, allocations: 3.984 kB / 0.7637 GB, free: 12.57 MB / 0.6042 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002127/0.5171, allocations: 1.378 MB / 0.7651 GB, free: 11.17 MB / 0.6042 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004988/0.5176, allocations: 302.7 kB / 0.7654 GB, free: 10.87 MB / 0.6042 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001129/0.5177, allocations: 27.94 kB / 0.7654 GB, free: 10.84 MB / 0.6042 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0005011/0.5182, allocations: 76.86 kB / 0.7655 GB, free: 10.77 MB / 0.6042 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001627/0.5184, allocations: 93.12 kB / 0.7656 GB, free: 10.68 MB / 0.6042 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.755e-05/0.5185, allocations: 55.97 kB / 0.7656 GB, free: 10.62 MB / 0.6042 GB Notification: Performance of sorting global known variables: time 0.0007168/0.5192, allocations: 0.631 MB / 0.7662 GB, free: 9.984 MB / 0.6042 GB Notification: Performance of sort global known variables: time 3.41e-07/0.5192, allocations: 0 / 0.7662 GB, free: 9.984 MB / 0.6042 GB Notification: Performance of remove unused functions: time 0.001153/0.5203, allocations: 0.4949 MB / 0.7667 GB, free: 9.488 MB / 0.6042 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 15 ($whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,weaDat.locTim.tNext,weaDat.locTim.k,weaDat.conTimMin.tNext,weaDat.conTimMin.k,weaDat.conTim.tNext,weaDat.conTim.k,weaDat.eqnTim.tNext,weaDat.eqnTim.k,weaDat.decAng.tNext,weaDat.decAng.k) * Number of discrete states: 10 (weaDat.conTim.tNext,weaDat.eqnTim.tNext,weaDat.locTim.tNext,weaDat.decAng.tNext,weaDat.conTimMin.tNext,weaDat.decAng.k,weaDat.eqnTim.k,weaDat.conTim.k,weaDat.conTimMin.k,weaDat.locTim.k) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (125): * Single equations (assignments): 114 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 10 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * 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): 1 system {(1,3)} Notification: Performance of Backend phase and start with SimCode phase: time 0.00325/0.5236, allocations: 2.584 MB / 0.7692 GB, free: 7.121 MB / 0.6042 GB Notification: Performance of simCode: created initialization part: time 0.001691/0.5253, allocations: 1.125 MB / 0.7703 GB, free: 5.98 MB / 0.6042 GB Notification: Performance of simCode: created event and clocks part: time 4.368e-06/0.5253, allocations: 0 / 0.7703 GB, free: 5.98 MB / 0.6042 GB Notification: Performance of simCode: created simulation system equations: time 0.0007567/0.526, allocations: 0.6503 MB / 0.771 GB, free: 5.316 MB / 0.6042 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001486/0.5275, allocations: 0.5215 MB / 0.7715 GB, free: 4.824 MB / 0.6042 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0118/0.5393, allocations: 9.282 MB / 0.7806 GB, free: 11.32 MB / 0.6198 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004614/0.5398, allocations: 0.6294 MB / 0.7812 GB, free: 10.66 MB / 0.6198 GB Notification: Performance of simCode: alias equations: time 0.00104/0.5408, allocations: 397.9 kB / 0.7815 GB, free: 10.27 MB / 0.6198 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0006098/0.5414, allocations: 0.5784 MB / 0.7821 GB, free: 9.691 MB / 0.6198 GB Notification: Performance of SimCode: time 1.393e-06/0.5414, allocations: 0 / 0.7821 GB, free: 9.691 MB / 0.6198 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.0622/0.6036, allocations: 37.42 MB / 0.8186 GB, free: 4.852 MB / 0.6511 GB Notification: Performance of buildModelFMU: Generate platform static: time 9.215/9.819, allocations: 17.92 kB / 0.8187 GB, free: 4.84 MB / 0.6511 GB " [Timeout remaining time 650] (rm -f IBPSA_latest_IBPSA.Fluid.Sources.Examples.MassFlowSource_WeatherData.pipe ; mkfifo IBPSA_latest_IBPSA.Fluid.Sources.Examples.MassFlowSource_WeatherData.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Fluid.Sources.Examples.MassFlowSource_WeatherData.pipe >> ../files/IBPSA_latest_IBPSA.Fluid.Sources.Examples.MassFlowSource_WeatherData.sim & python3 -m fmpy simulate --output-file IBPSA_latest_IBPSA.Fluid.Sources.Examples.MassFlowSource_WeatherData_res.csv --start-time 0 --stop-time 3.1536e+07 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 12614.4 IBPSA_latest_IBPSA_Fluid_Sources_Examples_MassFlowSource_WeatherData.fmu > IBPSA_latest_IBPSA.Fluid.Sources.Examples.MassFlowSource_WeatherData.pipe 2>&1) [Timeout 52.5] [Calling sys.exit(0), Time elapsed: 12.545197814702988] Failed to read output from testmodel.py, exit status != 0: 9.982135906815529 9.993638799 9.515801459 Calling exit ...