Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.PrescribedOutlet_Water.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 0.0007094/0.0007094, allocations: 80.44 kB / 19.17 MB, free: 0.7422 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 0.0007181/0.0007181, allocations: 169.9 kB / 22.46 MB, free: 2.105 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 0.8534/0.8534, allocations: 177.1 MB / 202.8 MB, free: 5.723 MB / 186.7 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 master/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 master/package.mo): time 0.001389/0.001389, allocations: 233.4 kB / 259.4 MB, free: 13 MB / 250.7 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems master/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems master/package.mo): time 0.6411/0.6411, allocations: 138.4 MB / 454.3 MB, free: 30.03 MB / 410.7 MB " [Timeout remaining time 179] Using package BuildingSystems with version 2.0.0-beta (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems master/package.mo) Using package NcDataReader2 with version 2.5.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 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(BuildingSystems.Fluid.Interfaces.Examples.PrescribedOutlet_Water,fileNamePrefix="BuildingSystems_BuildingSystems_Fluid_Interfaces_Examples_PrescribedOutlet_Water",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(BuildingSystems.Fluid.Interfaces.Examples.PrescribedOutlet_Water,fileNamePrefix="BuildingSystems_BuildingSystems_Fluid_Interfaces_Examples_PrescribedOutlet_Water",fmuType="me",version="2.0",platforms={"static"}) [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 1.493e-06/1.493e-06, allocations: 0 / 0.6463 GB, free: 1.852 MB / 0.5573 GB Notification: Performance of FrontEnd - Absyn->SCode: time 1.261e-05/1.411e-05, allocations: 2.281 kB / 0.6463 GB, free: 1.848 MB / 0.5573 GB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.Interfaces.Examples.PrescribedOutlet_Water): time 0.2602/0.2602, allocations: 26.92 MB / 0.6726 GB, free: 40.32 MB / 0.5573 GB Notification: Performance of NFInst.instExpressions: time 0.005135/0.2653, allocations: 6.533 MB / 0.679 GB, free: 35.91 MB / 0.5573 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0003232/0.2657, allocations: 70.94 kB / 0.679 GB, free: 35.87 MB / 0.5573 GB Notification: Performance of NFTyping.typeComponents: time 0.0008093/0.2665, allocations: 0.7047 MB / 0.6797 GB, free: 35.54 MB / 0.5573 GB Notification: Performance of NFTyping.typeBindings: time 0.001524/0.268, allocations: 1.608 MB / 0.6813 GB, free: 34.66 MB / 0.5573 GB Notification: Performance of NFTyping.typeClassSections: time 0.001198/0.2692, allocations: 1.134 MB / 0.6824 GB, free: 34.1 MB / 0.5573 GB Notification: Performance of NFFlatten.flatten: time 0.00139/0.2706, allocations: 2.557 MB / 0.6849 GB, free: 32.92 MB / 0.5573 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0005645/0.2711, allocations: 0.6615 MB / 0.6856 GB, free: 32.62 MB / 0.5573 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001067/0.2722, allocations: 1.349 MB / 0.6869 GB, free: 32.07 MB / 0.5573 GB Notification: Performance of NFSimplifyModel.simplify: time 0.000668/0.2729, allocations: 0.7475 MB / 0.6876 GB, free: 31.85 MB / 0.5573 GB Notification: Performance of NFPackage.collectConstants: time 0.000104/0.273, allocations: 72 kB / 0.6877 GB, free: 31.85 MB / 0.5573 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0008288/0.2738, allocations: 0.683 MB / 0.6883 GB, free: 31.61 MB / 0.5573 GB Notification: Performance of NFScalarize.scalarize: time 0.0002023/0.274, allocations: 308.1 kB / 0.6886 GB, free: 31.43 MB / 0.5573 GB Notification: Performance of NFVerifyModel.verify: time 0.0002786/0.2743, allocations: 369.4 kB / 0.689 GB, free: 31.29 MB / 0.5573 GB Notification: Performance of NFConvertDAE.convert: time 0.001423/0.2757, allocations: 1.611 MB / 0.6906 GB, free: 30.7 MB / 0.5573 GB Notification: Performance of FrontEnd - DAE generated: time 3.196e-06/0.2757, allocations: 1.031 kB / 0.6906 GB, free: 30.7 MB / 0.5573 GB Notification: Performance of FrontEnd: time 1.493e-06/0.2757, allocations: 4 kB / 0.6906 GB, free: 30.7 MB / 0.5573 GB Notification: Performance of Transformations before backend: time 1.198e-05/0.2757, allocations: 0 / 0.6906 GB, free: 30.7 MB / 0.5573 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 176 * Number of variables: 176 Notification: Performance of Generate backend data structure: time 0.001555/0.2773, allocations: 1.536 MB / 0.6921 GB, free: 29.68 MB / 0.5573 GB Notification: Performance of prepare preOptimizeDAE: time 3.741e-05/0.2773, allocations: 12.09 kB / 0.6921 GB, free: 29.68 MB / 0.5573 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 9.119e-05/0.2774, allocations: 118.7 kB / 0.6922 GB, free: 29.59 MB / 0.5573 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001653/0.2791, allocations: 0.5947 MB / 0.6928 GB, free: 29.48 MB / 0.5573 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0009161/0.28, allocations: 0.775 MB / 0.6935 GB, free: 29.02 MB / 0.5573 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.959e-05/0.28, allocations: 57.02 kB / 0.6936 GB, free: 28.99 MB / 0.5573 GB Notification: Performance of preOpt expandDerOperator (simulation): time 9.196e-05/0.2801, allocations: 74.61 kB / 0.6937 GB, free: 28.97 MB / 0.5573 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001406/0.2815, allocations: 1.109 MB / 0.6947 GB, free: 28.45 MB / 0.5573 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.495e-05/0.2815, allocations: 1.062 kB / 0.6947 GB, free: 28.45 MB / 0.5573 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.619e-05/0.2816, allocations: 29.12 kB / 0.6948 GB, free: 28.43 MB / 0.5573 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.552e-05/0.2816, allocations: 19.03 kB / 0.6948 GB, free: 28.43 MB / 0.5573 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001735/0.2833, allocations: 1.01 MB / 0.6958 GB, free: 28.17 MB / 0.5573 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 0.002991/0.2863, allocations: 4.278 MB / 0.6999 GB, free: 25.01 MB / 0.5573 GB Notification: Performance of preOpt comSubExp (simulation): time 0.00163/0.2879, allocations: 0.8762 MB / 0.7008 GB, free: 24.78 MB / 0.5573 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0007514/0.2887, allocations: 476 kB / 0.7013 GB, free: 24.65 MB / 0.5573 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0003299/0.289, allocations: 166.8 kB / 0.7014 GB, free: 24.62 MB / 0.5573 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0008828/0.2899, allocations: 0.5761 MB / 0.702 GB, free: 24.45 MB / 0.5573 GB Notification: Performance of pre-optimization done (n=61): time 1.763e-06/0.2899, allocations: 1.156 kB / 0.702 GB, free: 24.45 MB / 0.5573 GB Notification: Performance of matching and sorting (n=61): time 0.002415/0.2923, allocations: 1.527 MB / 0.7035 GB, free: 23.77 MB / 0.5573 GB Notification: Performance of inlineWhenForInitialization (initialization): time 2.797e-05/0.2924, allocations: 59.44 kB / 0.7035 GB, free: 23.7 MB / 0.5573 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0008548/0.2932, allocations: 1.18 MB / 0.7047 GB, free: 23.09 MB / 0.5573 GB Notification: Performance of collectPreVariables (initialization): time 4.34e-05/0.2933, allocations: 38.98 kB / 0.7047 GB, free: 23.05 MB / 0.5573 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002189/0.2935, allocations: 0.5573 MB / 0.7053 GB, free: 22.56 MB / 0.5573 GB Notification: Performance of collectInitialBindings (initialization): time 9.221e-05/0.2936, allocations: 218.7 kB / 0.7055 GB, free: 22.38 MB / 0.5573 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001583/0.2937, allocations: 163.7 kB / 0.7056 GB, free: 22.27 MB / 0.5573 GB Notification: Performance of setup shared object (initialization): time 4.065e-05/0.2938, allocations: 338 kB / 0.7059 GB, free: 21.95 MB / 0.5573 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0007132/0.2945, allocations: 455.8 kB / 0.7064 GB, free: 21.74 MB / 0.5573 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.000836/0.2953, allocations: 0.9462 MB / 0.7073 GB, free: 20.91 MB / 0.5573 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001503/0.2968, allocations: 1.143 MB / 0.7084 GB, free: 20.16 MB / 0.5573 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.629e-06/0.2968, allocations: 2.344 kB / 0.7084 GB, free: 20.16 MB / 0.5573 GB Notification: Performance of matching and sorting (n=100) (initialization): time 0.001861/0.2987, allocations: 1.292 MB / 0.7097 GB, free: 19.52 MB / 0.5573 GB Notification: Performance of prepare postOptimizeDAE: time 1.847e-05/0.2987, allocations: 12.59 kB / 0.7097 GB, free: 19.52 MB / 0.5573 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.103e-05/0.2987, allocations: 11.33 kB / 0.7097 GB, free: 19.51 MB / 0.5573 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.865e-05/0.2987, allocations: 14.44 kB / 0.7097 GB, free: 19.51 MB / 0.5573 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005606/0.2993, allocations: 271.7 kB / 0.71 GB, free: 19.43 MB / 0.5573 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.57e-05/0.2993, allocations: 19.36 kB / 0.71 GB, free: 19.42 MB / 0.5573 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005049/0.2998, allocations: 186.5 kB / 0.7102 GB, free: 19.32 MB / 0.5573 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.623e-05/0.2999, allocations: 45.06 kB / 0.7102 GB, free: 19.3 MB / 0.5573 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 34 * Number of states: 0 () * Number of discrete variables: 15 ($PRE.setHeaHigPow.nextTimeEvent,$whenCondition3,$PRE.setCooLimPow.nextTimeEvent,$whenCondition2,$PRE.setHeaCooUnl.nextTimeEvent,$whenCondition1,setHeaCooUnl.nextTimeEventScaled,$PRE.setHeaCooUnl.nextTimeEventScaled,setHeaCooUnl.nextTimeEvent,setCooLimPow.nextTimeEventScaled,$PRE.setCooLimPow.nextTimeEventScaled,setCooLimPow.nextTimeEvent,setHeaHigPow.nextTimeEventScaled,$PRE.setHeaHigPow.nextTimeEventScaled,setHeaHigPow.nextTimeEvent) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (100): * Single equations (assignments): 100 * 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 prepare postOptimizeDAE: time 0.0002532/0.3001, allocations: 296.1 kB / 0.7105 GB, free: 19.09 MB / 0.5573 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001067/0.3002, allocations: 123.7 kB / 0.7106 GB, free: 19.02 MB / 0.5573 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0021/0.3023, allocations: 1.45 MB / 0.712 GB, free: 18.28 MB / 0.5573 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.643e-05/0.3024, allocations: 11.73 kB / 0.712 GB, free: 18.28 MB / 0.5573 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.11e-06/0.3024, allocations: 1 kB / 0.712 GB, free: 18.28 MB / 0.5573 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.913e-06/0.3024, allocations: 3.984 kB / 0.7121 GB, free: 18.27 MB / 0.5573 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002789/0.3052, allocations: 2.327 MB / 0.7143 GB, free: 16.86 MB / 0.5573 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.591e-06/0.3052, allocations: 6.375 kB / 0.7143 GB, free: 16.86 MB / 0.5573 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004843/0.3056, allocations: 193.2 kB / 0.7145 GB, free: 16.8 MB / 0.5573 GB Notification: Performance of postOpt tearingSystem (simulation): time 6.702e-06/0.3057, allocations: 5.984 kB / 0.7145 GB, free: 16.8 MB / 0.5573 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.343e-05/0.3057, allocations: 30.09 kB / 0.7145 GB, free: 16.78 MB / 0.5573 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 4.779e-06/0.3057, allocations: 3.688 kB / 0.7146 GB, free: 16.78 MB / 0.5573 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.206e-06/0.3057, allocations: 6.406 kB / 0.7146 GB, free: 16.77 MB / 0.5573 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002744/0.3084, allocations: 2.072 MB / 0.7166 GB, free: 15.66 MB / 0.5573 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002362/0.3087, allocations: 217.9 kB / 0.7168 GB, free: 15.5 MB / 0.5573 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 8.785e-05/0.3088, allocations: 15 kB / 0.7168 GB, free: 15.49 MB / 0.5573 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0004198/0.3092, allocations: 108.6 kB / 0.7169 GB, free: 15.44 MB / 0.5573 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.416e-05/0.3093, allocations: 65.92 kB / 0.717 GB, free: 15.39 MB / 0.5573 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.833e-05/0.3093, allocations: 39.03 kB / 0.717 GB, free: 15.38 MB / 0.5573 GB Notification: Performance of sorting global known variables: time 0.0006079/0.3099, allocations: 0.8038 MB / 0.7178 GB, free: 14.96 MB / 0.5573 GB Notification: Performance of sort global known variables: time 7e-08/0.3099, allocations: 0 / 0.7178 GB, free: 14.96 MB / 0.5573 GB Notification: Performance of remove unused functions: time 0.0007027/0.3106, allocations: 353.5 kB / 0.7181 GB, free: 14.88 MB / 0.5573 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 7 * Number of states: 3 (heaHigPow.T,cooLimPow.T,heaCooUnl.T) * Number of discrete variables: 9 ($whenCondition3,$whenCondition2,$whenCondition1,setHeaHigPow.nextTimeEvent,setHeaHigPow.nextTimeEventScaled,setCooLimPow.nextTimeEvent,setCooLimPow.nextTimeEventScaled,setHeaCooUnl.nextTimeEvent,setHeaCooUnl.nextTimeEventScaled) * Number of discrete states: 6 (setHeaHigPow.nextTimeEvent,setCooLimPow.nextTimeEvent,setHeaCooUnl.nextTimeEvent,setHeaCooUnl.nextTimeEventScaled,setCooLimPow.nextTimeEventScaled,setHeaHigPow.nextTimeEventScaled) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (76): * Single equations (assignments): 61 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 9 * When equations: 6 * 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 0.0038/0.3144, allocations: 3.21 MB / 0.7213 GB, free: 13.07 MB / 0.5573 GB Notification: Performance of simCode: created initialization part: time 0.001675/0.3161, allocations: 1.111 MB / 0.7223 GB, free: 12.57 MB / 0.5573 GB Notification: Performance of simCode: created event and clocks part: time 3.456e-06/0.3161, allocations: 1.469 kB / 0.7224 GB, free: 12.57 MB / 0.5573 GB Notification: Performance of simCode: created simulation system equations: time 0.000821/0.3169, allocations: 0.5704 MB / 0.7229 GB, free: 12.32 MB / 0.5573 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001048/0.318, allocations: 452.6 kB / 0.7233 GB, free: 11.99 MB / 0.5573 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.008485/0.3265, allocations: 9.744 MB / 0.7329 GB, free: 1.871 MB / 0.5573 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0002458/0.3267, allocations: 0.5218 MB / 0.7334 GB, free: 1.312 MB / 0.5573 GB Notification: Performance of simCode: alias equations: time 0.0004321/0.3271, allocations: 251 kB / 0.7336 GB, free: 1.066 MB / 0.5573 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003511/0.3275, allocations: 488.2 kB / 0.7341 GB, free: 0.5898 MB / 0.5573 GB Notification: Performance of SimCode: time 6.61e-07/0.3275, allocations: 0 / 0.7341 GB, free: 0.5898 MB / 0.5573 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.03951/0.367, allocations: 33.76 MB / 0.767 GB, free: 15.41 MB / 0.6042 GB Notification: Performance of buildModelFMU: Generate platform static: time 7.259/7.626, allocations: 3.438 kB / 0.767 GB, free: 15.41 MB / 0.6042 GB " [Timeout remaining time 652] (rm -f BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.PrescribedOutlet_Water.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.PrescribedOutlet_Water.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.PrescribedOutlet_Water.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.PrescribedOutlet_Water.sim & python3 -m fmpy simulate --output-file BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.PrescribedOutlet_Water_res.csv --start-time 0 --stop-time 1200 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.48 BuildingSystems_BuildingSystems_Fluid_Interfaces_Examples_PrescribedOutlet_Water.fmu > BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.PrescribedOutlet_Water.pipe 2>&1) [Timeout 52.5] [Calling sys.exit(0), Time elapsed: 10.246465269476175] Failed to read output from testmodel.py, exit status != 0: 7.740138572640717 7.748924108 7.471524996 Calling exit ...