Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_IDEAS.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3.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 0.00166/0.00166, allocations: 116.8 kB / 17.17 MB, free: 5.977 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 0.00222/0.00222, allocations: 209.6 kB / 20.13 MB, free: 3.035 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 1.567/1.567, allocations: 230.6 MB / 253.5 MB, free: 15.1 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo): time 0.8776/0.8776, allocations: 133.9 MB / 443.5 MB, free: 14.23 MB / 350.1 MB " [Timeout remaining time 179] Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/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(IDEAS.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3,fileNamePrefix="IDEAS_IDEAS_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase3",fmuType="cs",version="2.0",platforms={"static"}) "" <> buildModelFMU(IDEAS.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3,fileNamePrefix="IDEAS_IDEAS_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase3",fmuType="cs",version="2.0",platforms={"static"}) [Timeout 660] "Notification: IDEAS 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 0.001981/0.001981, allocations: 66.16 kB / 0.6141 GB, free: 38.27 MB / 0.4981 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1398/0.1418, allocations: 85.85 MB / 0.6979 GB, free: 13.69 MB / 0.5137 GB Notification: Performance of NFInst.instantiate(IDEAS.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3): time 0.1929/0.3347, allocations: 160.2 MB / 0.8544 GB, free: 14.23 MB / 0.67 GB Notification: Performance of NFInst.instExpressions: time 0.3917/0.7264, allocations: 21.85 MB / 0.8757 GB, free: 1.59 MB / 0.67 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002042/0.7285, allocations: 70.53 kB / 0.8758 GB, free: 1.59 MB / 0.67 GB Notification: Performance of NFTyping.typeComponents: time 0.001854/0.7303, allocations: 1.167 MB / 0.877 GB, free: 1.59 MB / 0.67 GB Notification: Performance of NFTyping.typeBindings: time 0.001885/0.7322, allocations: 0.9156 MB / 0.8778 GB, free: 1.566 MB / 0.67 GB Notification: Performance of NFTyping.typeClassSections: time 0.001057/0.7332, allocations: 382.4 kB / 0.8782 GB, free: 1.559 MB / 0.67 GB Notification: Performance of NFFlatten.flatten: time 0.001607/0.7349, allocations: 1.273 MB / 0.8795 GB, free: 1.559 MB / 0.67 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0007334/0.7356, allocations: 0.5701 MB / 0.88 GB, free: 1.543 MB / 0.67 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0009054/0.7365, allocations: 0.5701 MB / 0.8806 GB, free: 1.543 MB / 0.67 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001382/0.7379, allocations: 1.005 MB / 0.8816 GB, free: 1.543 MB / 0.67 GB Notification: Performance of NFPackage.collectConstants: time 0.0001602/0.738, allocations: 66.97 kB / 0.8816 GB, free: 1.543 MB / 0.67 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0003568/0.7384, allocations: 111.1 kB / 0.8817 GB, free: 1.539 MB / 0.67 GB Notification: Performance of NFScalarize.scalarize: time 0.0003311/0.7387, allocations: 327.5 kB / 0.882 GB, free: 1.539 MB / 0.67 GB Notification: Performance of NFVerifyModel.verify: time 0.0005114/0.7392, allocations: 499.4 kB / 0.8825 GB, free: 1.539 MB / 0.67 GB Notification: Performance of NFConvertDAE.convert: time 0.001441/0.7407, allocations: 1.219 MB / 0.8837 GB, free: 1.449 MB / 0.67 GB Notification: Performance of FrontEnd - DAE generated: time 4.078e-06/0.7407, allocations: 0 / 0.8837 GB, free: 1.449 MB / 0.67 GB Notification: Performance of FrontEnd: time 1.573e-06/0.7407, allocations: 0.9375 kB / 0.8837 GB, free: 1.449 MB / 0.67 GB Notification: Performance of Transformations before backend: time 2.036e-05/0.7407, allocations: 0 / 0.8837 GB, free: 1.449 MB / 0.67 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 107 * Number of variables: 107 Notification: Performance of Generate backend data structure: time 0.002353/0.7431, allocations: 1.537 MB / 0.8852 GB, free: 16.54 MB / 0.6856 GB Notification: Performance of prepare preOptimizeDAE: time 4.18e-05/0.7431, allocations: 11.2 kB / 0.8852 GB, free: 16.54 MB / 0.6856 GB Notification: Performance of preOpt introduceOutputRealDerivatives (simulation): time 2.499e-05/0.7431, allocations: 12.88 kB / 0.8852 GB, free: 16.54 MB / 0.6856 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 9.649e-05/0.7432, allocations: 84.64 kB / 0.8853 GB, free: 16.5 MB / 0.6856 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001956/0.7434, allocations: 147.2 kB / 0.8854 GB, free: 16.42 MB / 0.6856 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0008902/0.7443, allocations: 0.6839 MB / 0.8861 GB, free: 16.02 MB / 0.6856 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001317/0.7444, allocations: 74.17 kB / 0.8862 GB, free: 15.99 MB / 0.6856 GB Notification: Performance of preOpt expandDerOperator (simulation): time 8.536e-05/0.7445, allocations: 45.22 kB / 0.8862 GB, free: 15.99 MB / 0.6856 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0009004/0.7454, allocations: 0.5285 MB / 0.8867 GB, free: 15.93 MB / 0.6856 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.102e-05/0.7454, allocations: 0.875 kB / 0.8867 GB, free: 15.93 MB / 0.6856 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.591e-05/0.7455, allocations: 15.22 kB / 0.8868 GB, free: 15.93 MB / 0.6856 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.124e-05/0.7455, allocations: 10.14 kB / 0.8868 GB, free: 15.93 MB / 0.6856 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0007741/0.7463, allocations: 420.8 kB / 0.8872 GB, free: 15.92 MB / 0.6856 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 0.003502/0.7498, allocations: 2.732 MB / 0.8898 GB, free: 14.49 MB / 0.6856 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0008459/0.7506, allocations: 418.1 kB / 0.8902 GB, free: 14.46 MB / 0.6856 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005913/0.7512, allocations: 284.2 kB / 0.8905 GB, free: 14.46 MB / 0.6856 GB Notification: Performance of preOpt evalFunc (simulation): time 3.566e-05/0.7513, allocations: 6.266 kB / 0.8905 GB, free: 14.46 MB / 0.6856 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0005338/0.7518, allocations: 290.5 kB / 0.8908 GB, free: 14.4 MB / 0.6856 GB Notification: Performance of pre-optimization done (n=44): time 3.156e-06/0.7518, allocations: 0 / 0.8908 GB, free: 14.4 MB / 0.6856 GB Notification: Performance of matching and sorting (n=44): time 0.00257/0.7544, allocations: 1.151 MB / 0.8919 GB, free: 14.08 MB / 0.6856 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.966e-05/0.7544, allocations: 57.62 kB / 0.892 GB, free: 14.02 MB / 0.6856 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001654/0.7561, allocations: 1.784 MB / 0.8937 GB, free: 13.87 MB / 0.6856 GB Notification: Performance of collectPreVariables (initialization): time 4.746e-05/0.7561, allocations: 39.89 kB / 0.8938 GB, free: 13.84 MB / 0.6856 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003615/0.7565, allocations: 0.5293 MB / 0.8943 GB, free: 13.7 MB / 0.6856 GB Notification: Performance of collectInitialBindings (initialization): time 0.000125/0.7566, allocations: 145.8 kB / 0.8944 GB, free: 13.61 MB / 0.6856 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001398/0.7567, allocations: 103 kB / 0.8945 GB, free: 13.59 MB / 0.6856 GB Notification: Performance of setup shared object (initialization): time 0.0001595/0.7569, allocations: 332.2 kB / 0.8948 GB, free: 13.28 MB / 0.6856 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004366/0.7573, allocations: 211.4 kB / 0.895 GB, free: 13.27 MB / 0.6856 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005134/0.7578, allocations: 341.6 kB / 0.8953 GB, free: 13.15 MB / 0.6856 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.000855/0.7587, allocations: 0.5104 MB / 0.8958 GB, free: 13.02 MB / 0.6856 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.242e-06/0.7587, allocations: 3.375 kB / 0.8959 GB, free: 13.02 MB / 0.6856 GB Notification: Performance of matching and sorting (n=69) (initialization): time 0.001481/0.7602, allocations: 0.8068 MB / 0.8966 GB, free: 12.9 MB / 0.6856 GB Notification: Performance of prepare postOptimizeDAE: time 1.841e-05/0.7602, allocations: 8.469 kB / 0.8966 GB, free: 12.9 MB / 0.6856 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.895e-06/0.7602, allocations: 1.812 kB / 0.8966 GB, free: 12.9 MB / 0.6856 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004014/0.7606, allocations: 145 kB / 0.8968 GB, free: 12.89 MB / 0.6856 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003557/0.761, allocations: 103.3 kB / 0.8969 GB, free: 12.89 MB / 0.6856 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002692/0.7637, allocations: 2.609 MB / 0.8994 GB, free: 11.35 MB / 0.6856 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005202/0.7642, allocations: 73.25 kB / 0.8995 GB, free: 11.32 MB / 0.6856 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.537e-05/0.7642, allocations: 23.91 kB / 0.8995 GB, free: 11.32 MB / 0.6856 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 16 * Number of states: 0 () * Number of discrete variables: 19 (assEqu.nFai,$PRE.assEqu.nFai,$whenCondition5,$PRE.intGai.nextTimeEvent,$whenCondition4,$PRE.reference.nextTimeEvent,$whenCondition3,$whenCondition1,mean.y_last,$PRE.mean.y_last,assEqu.satisfied,$PRE.assEqu.satisfied,reference.nextTimeEventScaled,$PRE.reference.nextTimeEventScaled,reference.nextTimeEvent,$whenCondition2,intGai.nextTimeEventScaled,$PRE.intGai.nextTimeEventScaled,intGai.nextTimeEvent) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (54): * Single equations (assignments): 53 * 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): 1 system {(1,15,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.000548/0.7648, allocations: 390 kB / 0.8999 GB, free: 11.2 MB / 0.6856 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001598/0.7649, allocations: 136 kB / 0.9 GB, free: 11.13 MB / 0.6856 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0002197/0.7651, allocations: 140.8 kB / 0.9002 GB, free: 11.11 MB / 0.6856 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.957e-06/0.7651, allocations: 5.547 kB / 0.9002 GB, free: 11.11 MB / 0.6856 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.434e-05/0.7652, allocations: 7.5 kB / 0.9002 GB, free: 11.11 MB / 0.6856 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.232e-06/0.7652, allocations: 3.797 kB / 0.9002 GB, free: 11.11 MB / 0.6856 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002277/0.7674, allocations: 1.485 MB / 0.9016 GB, free: 10.77 MB / 0.6856 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.797e-06/0.7675, allocations: 5.031 kB / 0.9016 GB, free: 10.76 MB / 0.6856 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002297/0.7677, allocations: 50.62 kB / 0.9017 GB, free: 10.76 MB / 0.6856 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004242/0.7681, allocations: 163 kB / 0.9018 GB, free: 10.74 MB / 0.6856 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.525e-05/0.7681, allocations: 13.5 kB / 0.9018 GB, free: 10.74 MB / 0.6856 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.00377/0.7719, allocations: 4.025 MB / 0.9058 GB, free: 7.863 MB / 0.6856 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.94e-06/0.7719, allocations: 3.938 kB / 0.9058 GB, free: 7.859 MB / 0.6856 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001837/0.7738, allocations: 0.9885 MB / 0.9067 GB, free: 7.625 MB / 0.6856 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0003738/0.7741, allocations: 223.1 kB / 0.907 GB, free: 7.457 MB / 0.6856 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 9.301e-05/0.7742, allocations: 12.84 kB / 0.907 GB, free: 7.457 MB / 0.6856 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003155/0.7745, allocations: 29.66 kB / 0.907 GB, free: 7.457 MB / 0.6856 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001333/0.7747, allocations: 59.5 kB / 0.9071 GB, free: 7.453 MB / 0.6856 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.594e-05/0.7747, allocations: 14.97 kB / 0.9071 GB, free: 7.453 MB / 0.6856 GB Notification: Performance of sorting global known variables: time 0.001365/0.7761, allocations: 1.302 MB / 0.9083 GB, free: 7.344 MB / 0.6856 GB Notification: Performance of sort global known variables: time 1.21e-07/0.7761, allocations: 0.5625 kB / 0.9083 GB, free: 7.344 MB / 0.6856 GB Notification: Performance of remove unused functions: time 0.0008141/0.7769, allocations: 198.8 kB / 0.9085 GB, free: 7.328 MB / 0.6856 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 4 (thermalZoneTwoElements.extWallRC.thermCapExt[1].T,thermalZoneTwoElements.intWallRC.thermCapInt[1].T,assEqu.diff,mean.x) * Number of discrete variables: 12 ($whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,intGai.nextTimeEvent,intGai.nextTimeEventScaled,reference.nextTimeEvent,reference.nextTimeEventScaled,assEqu.satisfied,assEqu.nFai,mean.y_last) * Number of discrete states: 7 (intGai.nextTimeEvent,reference.nextTimeEvent,mean.x,assEqu.satisfied,assEqu.nFai,reference.nextTimeEventScaled,intGai.nextTimeEventScaled) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (28): * Single equations (assignments): 20 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 6 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(2,12,100.0%), (1,3,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.003734/0.7806, allocations: 1.914 MB / 0.9104 GB, free: 6.512 MB / 0.6856 GB Notification: Performance of simCode: created initialization part: time 0.001405/0.782, allocations: 0.6404 MB / 0.911 GB, free: 6.375 MB / 0.6856 GB Notification: Performance of simCode: created event and clocks part: time 2.936e-06/0.782, allocations: 0.9062 kB / 0.911 GB, free: 6.375 MB / 0.6856 GB Notification: Performance of simCode: created simulation system equations: time 0.0008481/0.7829, allocations: 0.516 MB / 0.9115 GB, free: 6.133 MB / 0.6856 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001169/0.784, allocations: 209.5 kB / 0.9117 GB, free: 6.102 MB / 0.6856 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01296/0.797, allocations: 8.602 MB / 0.9201 GB, free: 3.652 MB / 0.6856 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.000836/0.7978, allocations: 1.152 MB / 0.9213 GB, free: 2.945 MB / 0.6856 GB Notification: Performance of simCode: alias equations: time 0.0003493/0.7982, allocations: 94.98 kB / 0.9213 GB, free: 2.926 MB / 0.6856 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004314/0.7986, allocations: 415.4 kB / 0.9217 GB, free: 2.914 MB / 0.6856 GB Notification: Performance of SimCode: time 7.01e-07/0.7986, allocations: 0 / 0.9217 GB, free: 2.914 MB / 0.6856 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.0537/0.8523, allocations: 21.2 MB / 0.9425 GB, free: 9.473 MB / 0.7012 GB Notification: Performance of buildModelFMU: Generate platform static: time 12.37/13.22, allocations: 11.94 kB / 0.9425 GB, free: 9.461 MB / 0.7012 GB " [Timeout remaining time 646] (rm -f IDEAS_IDEAS.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3.pipe ; mkfifo IDEAS_IDEAS.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3.pipe ; head -c 1048576 < IDEAS_IDEAS.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3.pipe >> ../files/IDEAS_IDEAS.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_IDEAS_IDEAS_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase3_fmu --startTime=0 --stopTime=5.184e+06 --stepSize=60 --timeout=50 --tolerance=1e-06 IDEAS_IDEAS_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase3.fmu > IDEAS_IDEAS.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase3.pipe 2>&1) [Timeout 52.5] [Calling sys.exit(0), Time elapsed: 19.382807310961653] Failed to read output from testmodel.py, exit status != 0: 13.683562799007632 13.459176267 12.714010142 Calling exit ...