Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_IDEAS.Fluid.BaseClasses.FlowModels.Validation.InvertingBasicFlowFunction_m_flow.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 0.0008474/0.0008474, 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 0.0008389/0.0008389, allocations: 170.3 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 0.8727/0.8727, allocations: 177.1 MB / 202.8 MB, free: 5.746 MB / 186.7 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/package.mo", uses=false) [Timeout 180] "[/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Examples/PPD12/Structure.mo:531:21-531:686:writable] Warning: Lexer treating \\ as \\\\, since \\e is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Examples/PPD12/Structure.mo:531:21-531:694:writable] Warning: Lexer treating \\ as \\\\, since \\< is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Media/Refrigerants/R410A/package.order:0:0-0:0:readonly] Warning: Found duplicate names in package.order file: A, B, C. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Media/Refrigerants/R410A/package.mo:2:1-70:10:writable] Warning: C was referenced in the package.order file, but was not found in package.mo, C/package.mo or C.mo. Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/package.mo): time 0.7073/0.7073, allocations: 154.6 MB / 413.8 MB, free: 0.7969 MB / 378.7 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Utilities/Cryptographics/BaseClasses/sha.mo:2:1-19:8:writable] Warning: External function annotation should occur on the external-clause, not on the function. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Utilities/File/sha2.mo:2:1-9:9:writable] Warning: External function annotation should occur on the external-clause, not on the function. " [Timeout remaining time 179] Using package IDEAS with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/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.Fluid.BaseClasses.FlowModels.Validation.InvertingBasicFlowFunction_m_flow,fileNamePrefix="IDEAS_IDEAS_Fluid_BaseClasses_FlowModels_Validation_InvertingBasicFlowFunction_m_flow",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(IDEAS.Fluid.BaseClasses.FlowModels.Validation.InvertingBasicFlowFunction_m_flow,fileNamePrefix="IDEAS_IDEAS_Fluid_BaseClasses_FlowModels_Validation_InvertingBasicFlowFunction_m_flow",fmuType="me",version="2.0",platforms={"static"}) [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 1.332e-06/1.332e-06, allocations: 0 / 0.6181 GB, free: 13.64 MB / 0.5886 GB Notification: Performance of FrontEnd - Absyn->SCode: time 1.526e-05/1.659e-05, allocations: 6.219 kB / 0.6181 GB, free: 13.64 MB / 0.5886 GB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.BaseClasses.FlowModels.Validation.InvertingBasicFlowFunction_m_flow): time 0.001518/0.001535, allocations: 1.273 MB / 0.6193 GB, free: 12.36 MB / 0.5886 GB Notification: Performance of NFInst.instExpressions: time 0.0006827/0.002218, allocations: 0.5176 MB / 0.6199 GB, free: 11.84 MB / 0.5886 GB Notification: Performance of NFInst.updateImplicitVariability: time 2.227e-05/0.00224, allocations: 0 / 0.6199 GB, free: 11.84 MB / 0.5886 GB Notification: Performance of NFTyping.typeComponents: time 1.908e-05/0.002259, allocations: 3.938 kB / 0.6199 GB, free: 11.83 MB / 0.5886 GB Notification: Performance of NFTyping.typeBindings: time 4.015e-05/0.002299, allocations: 3.938 kB / 0.6199 GB, free: 11.83 MB / 0.5886 GB Notification: Performance of NFTyping.typeClassSections: time 0.000376/0.002675, allocations: 135.3 kB / 0.62 GB, free: 11.7 MB / 0.5886 GB Notification: Performance of NFFlatten.flatten: time 4.909e-05/0.002724, allocations: 15.92 kB / 0.62 GB, free: 11.68 MB / 0.5886 GB Notification: Performance of NFFlatten.resolveConnections: time 4.267e-05/0.002767, allocations: 0 / 0.62 GB, free: 11.68 MB / 0.5886 GB Notification: Performance of NFEvalConstants.evaluate: time 3.04e-05/0.002797, allocations: 7.984 kB / 0.62 GB, free: 11.67 MB / 0.5886 GB Notification: Performance of NFSimplifyModel.simplify: time 3.859e-05/0.002836, allocations: 4 kB / 0.62 GB, free: 11.67 MB / 0.5886 GB Notification: Performance of NFPackage.collectConstants: time 1.229e-05/0.002848, allocations: 0 / 0.62 GB, free: 11.67 MB / 0.5886 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0002795/0.003128, allocations: 275.4 kB / 0.6203 GB, free: 11.4 MB / 0.5886 GB Notification: Performance of NFScalarize.scalarize: time 1.329e-05/0.003141, allocations: 0 / 0.6203 GB, free: 11.4 MB / 0.5886 GB Notification: Performance of NFVerifyModel.verify: time 1.805e-05/0.003159, allocations: 7.938 kB / 0.6203 GB, free: 11.39 MB / 0.5886 GB Notification: Performance of NFConvertDAE.convert: time 0.0001797/0.003339, allocations: 143.6 kB / 0.6204 GB, free: 11.25 MB / 0.5886 GB Notification: Performance of FrontEnd - DAE generated: time 1.844e-06/0.00334, allocations: 0 / 0.6204 GB, free: 11.25 MB / 0.5886 GB Notification: Performance of FrontEnd: time 1.012e-06/0.003341, allocations: 0 / 0.6204 GB, free: 11.25 MB / 0.5886 GB Notification: Performance of Transformations before backend: time 3.827e-06/0.003345, allocations: 3.938 kB / 0.6204 GB, free: 11.25 MB / 0.5886 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 2 * Number of variables: 2 Notification: Performance of Generate backend data structure: time 0.0002941/0.003639, allocations: 274 kB / 0.6207 GB, free: 10.95 MB / 0.5886 GB Notification: Performance of prepare preOptimizeDAE: time 3.817e-05/0.003678, allocations: 12.03 kB / 0.6207 GB, free: 10.93 MB / 0.5886 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 2.707e-05/0.003705, allocations: 34.75 kB / 0.6207 GB, free: 10.89 MB / 0.5886 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 2.111e-05/0.003726, allocations: 4.938 kB / 0.6207 GB, free: 10.89 MB / 0.5886 GB Notification: Performance of preOpt evaluateParameters (simulation): time 7.037e-05/0.003796, allocations: 101.8 kB / 0.6208 GB, free: 10.76 MB / 0.5886 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 8.986e-06/0.003805, allocations: 4.375 kB / 0.6208 GB, free: 10.76 MB / 0.5886 GB Notification: Performance of preOpt expandDerOperator (simulation): time 6.682e-06/0.003812, allocations: 384 / 0.6208 GB, free: 10.76 MB / 0.5886 GB Notification: Performance of preOpt clockPartitioning (simulation): time 8.171e-05/0.003894, allocations: 34.25 kB / 0.6209 GB, free: 10.72 MB / 0.5886 GB Notification: Performance of preOpt findStateOrder (simulation): time 6.342e-06/0.0039, allocations: 192 / 0.6209 GB, free: 10.72 MB / 0.5886 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 7.304e-06/0.003907, allocations: 384 / 0.6209 GB, free: 10.72 MB / 0.5886 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.748e-06/0.003912, allocations: 4.125 kB / 0.6209 GB, free: 10.71 MB / 0.5886 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 2.245e-05/0.003934, allocations: 7.984 kB / 0.6209 GB, free: 10.71 MB / 0.5886 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0001176/0.004052, allocations: 128.7 kB / 0.621 GB, free: 10.54 MB / 0.5886 GB Notification: Performance of preOpt comSubExp (simulation): time 4.517e-05/0.004097, allocations: 26.52 kB / 0.621 GB, free: 10.5 MB / 0.5886 GB Notification: Performance of preOpt resolveLoops (simulation): time 1.727e-05/0.004114, allocations: 8.906 kB / 0.621 GB, free: 10.49 MB / 0.5886 GB Notification: Performance of preOpt evalFunc (simulation): time 1.797e-05/0.004132, allocations: 4 kB / 0.621 GB, free: 10.49 MB / 0.5886 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 1.74e-05/0.00415, allocations: 30.56 kB / 0.6211 GB, free: 10.45 MB / 0.5886 GB Notification: Performance of pre-optimization done (n=2): time 7.01e-07/0.00415, allocations: 0 / 0.6211 GB, free: 10.45 MB / 0.5886 GB Notification: Performance of matching and sorting (n=2): time 0.0001125/0.004263, allocations: 45.59 kB / 0.6211 GB, free: 10.4 MB / 0.5886 GB Notification: Performance of inlineWhenForInitialization (initialization): time 2.667e-05/0.00429, allocations: 63.28 kB / 0.6212 GB, free: 10.32 MB / 0.5886 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 4.689e-05/0.004337, allocations: 97.97 kB / 0.6213 GB, free: 10.22 MB / 0.5886 GB Notification: Performance of collectPreVariables (initialization): time 1.016e-05/0.004347, allocations: 29.7 kB / 0.6213 GB, free: 10.18 MB / 0.5886 GB Notification: Performance of collectInitialEqns (initialization): time 2.217e-05/0.004369, allocations: 80.14 kB / 0.6214 GB, free: 10.1 MB / 0.5886 GB Notification: Performance of collectInitialBindings (initialization): time 2.414e-05/0.004393, allocations: 7.953 kB / 0.6214 GB, free: 10.09 MB / 0.5886 GB Notification: Performance of simplifyInitialFunctions (initialization): time 2.093e-05/0.004414, allocations: 13.72 kB / 0.6214 GB, free: 10.07 MB / 0.5886 GB Notification: Performance of setup shared object (initialization): time 6.997e-05/0.004484, allocations: 310.8 kB / 0.6217 GB, free: 9.762 MB / 0.5886 GB Notification: Performance of preBalanceInitialSystem (initialization): time 8.776e-06/0.004493, allocations: 0 / 0.6217 GB, free: 9.762 MB / 0.5886 GB Notification: Performance of partitionIndependentBlocks (initialization): time 8.696e-06/0.004501, allocations: 7.984 kB / 0.6217 GB, free: 9.754 MB / 0.5886 GB Notification: Performance of analyzeInitialSystem (initialization): time 2.29e-05/0.004524, allocations: 12.86 kB / 0.6217 GB, free: 9.738 MB / 0.5886 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.583e-06/0.004526, allocations: 0 / 0.6217 GB, free: 9.738 MB / 0.5886 GB Notification: Performance of matching and sorting (n=2) (initialization): time 3.742e-05/0.004563, allocations: 45.83 kB / 0.6218 GB, free: 9.688 MB / 0.5886 GB Notification: Performance of prepare postOptimizeDAE: time 1.002e-05/0.004573, allocations: 8 kB / 0.6218 GB, free: 9.68 MB / 0.5886 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.098e-06/0.004577, allocations: 0 / 0.6218 GB, free: 9.68 MB / 0.5886 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.094e-05/0.004588, allocations: 3.938 kB / 0.6218 GB, free: 9.676 MB / 0.5886 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001223/0.004711, allocations: 15.92 kB / 0.6218 GB, free: 9.66 MB / 0.5886 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0002552/0.004966, allocations: 0.5782 MB / 0.6223 GB, free: 9.059 MB / 0.5886 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 1.315e-05/0.004979, allocations: 0 / 0.6223 GB, free: 9.059 MB / 0.5886 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.31e-06/0.004984, allocations: 4.031 kB / 0.6223 GB, free: 9.055 MB / 0.5886 GB Notification: Model statistics after passing the back-end for initialization: * 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 initialization (2): * Single equations (assignments): 1 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 1 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 1 system {1} * Without analytic Jacobian (size): 0 systems Notification: Performance of prepare postOptimizeDAE: time 5.431e-05/0.005039, allocations: 111 kB / 0.6225 GB, free: 8.938 MB / 0.5886 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 3.887e-06/0.005042, allocations: 3.938 kB / 0.6225 GB, free: 8.934 MB / 0.5886 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 7.733e-05/0.00512, allocations: 56.89 kB / 0.6225 GB, free: 8.871 MB / 0.5886 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.453e-06/0.005121, allocations: 4 kB / 0.6225 GB, free: 8.867 MB / 0.5886 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.537e-06/0.005125, allocations: 0 / 0.6225 GB, free: 8.867 MB / 0.5886 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.294e-06/0.005127, allocations: 0 / 0.6225 GB, free: 8.867 MB / 0.5886 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 5.881e-05/0.005186, allocations: 128.7 kB / 0.6226 GB, free: 8.699 MB / 0.5886 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.733e-06/0.005188, allocations: 3.938 kB / 0.6226 GB, free: 8.695 MB / 0.5886 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 4.606e-05/0.005234, allocations: 8 kB / 0.6227 GB, free: 8.688 MB / 0.5886 GB Notification: Performance of postOpt tearingSystem (simulation): time 2.434e-06/0.005236, allocations: 3.984 kB / 0.6227 GB, free: 8.684 MB / 0.5886 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.859e-06/0.005241, allocations: 4.031 kB / 0.6227 GB, free: 8.68 MB / 0.5886 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.000443/0.005684, allocations: 0.5821 MB / 0.6232 GB, free: 8.074 MB / 0.5886 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.713e-06/0.005686, allocations: 3.938 kB / 0.6232 GB, free: 8.07 MB / 0.5886 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 4.097e-05/0.005727, allocations: 65.11 kB / 0.6233 GB, free: 7.988 MB / 0.5886 GB Notification: Performance of postOpt removeConstants (simulation): time 5.16e-06/0.005732, allocations: 3.984 kB / 0.6233 GB, free: 7.984 MB / 0.5886 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 8.336e-06/0.00574, allocations: 4 kB / 0.6233 GB, free: 7.98 MB / 0.5886 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 5.881e-06/0.005746, allocations: 0 / 0.6233 GB, free: 7.98 MB / 0.5886 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.968e-06/0.005756, allocations: 0 / 0.6233 GB, free: 7.98 MB / 0.5886 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.943e-06/0.005758, allocations: 0 / 0.6233 GB, free: 7.98 MB / 0.5886 GB Notification: Performance of sorting global known variables: time 2.215e-05/0.00578, allocations: 83.41 kB / 0.6234 GB, free: 7.898 MB / 0.5886 GB Notification: Performance of sort global known variables: time 5e-08/0.00578, allocations: 0 / 0.6234 GB, free: 7.898 MB / 0.5886 GB Notification: Performance of remove unused functions: time 0.0001285/0.005909, allocations: 15.88 kB / 0.6234 GB, free: 7.883 MB / 0.5886 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 (2): * Single equations (assignments): 1 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 1 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 1 system {1} * Without analytic Jacobian (size): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0002526/0.006161, allocations: 0.6153 MB / 0.624 GB, free: 7.242 MB / 0.5886 GB Notification: Performance of simCode: created initialization part: time 0.0001136/0.006275, allocations: 19.92 kB / 0.624 GB, free: 7.223 MB / 0.5886 GB Notification: Performance of simCode: created event and clocks part: time 1.804e-06/0.006277, allocations: 0 / 0.624 GB, free: 7.223 MB / 0.5886 GB Notification: Performance of simCode: created simulation system equations: time 3.078e-05/0.006307, allocations: 12.17 kB / 0.624 GB, free: 7.211 MB / 0.5886 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0001082/0.006416, allocations: 12.06 kB / 0.624 GB, free: 7.199 MB / 0.5886 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0003437/0.006759, allocations: 130.5 kB / 0.6242 GB, free: 7.031 MB / 0.5886 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 3.41e-05/0.006793, allocations: 55.36 kB / 0.6242 GB, free: 6.957 MB / 0.5886 GB Notification: Performance of simCode: alias equations: time 1.245e-05/0.006806, allocations: 0 / 0.6242 GB, free: 6.957 MB / 0.5886 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 2.398e-05/0.00683, allocations: 12.5 kB / 0.6242 GB, free: 6.945 MB / 0.5886 GB Notification: Performance of SimCode: time 5.71e-07/0.00683, allocations: 0 / 0.6242 GB, free: 6.945 MB / 0.5886 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.01378/0.02061, allocations: 1.954 MB / 0.6261 GB, free: 5.18 MB / 0.5886 GB Notification: Performance of buildModelFMU: Generate platform static: time 7.341/7.362, allocations: 6.641 kB / 0.6261 GB, free: 5.176 MB / 0.5886 GB " [Timeout remaining time 653] (rm -f IDEAS_IDEAS.Fluid.BaseClasses.FlowModels.Validation.InvertingBasicFlowFunction_m_flow.pipe ; mkfifo IDEAS_IDEAS.Fluid.BaseClasses.FlowModels.Validation.InvertingBasicFlowFunction_m_flow.pipe ; head -c 1048576 < IDEAS_IDEAS.Fluid.BaseClasses.FlowModels.Validation.InvertingBasicFlowFunction_m_flow.pipe >> ../files/IDEAS_IDEAS.Fluid.BaseClasses.FlowModels.Validation.InvertingBasicFlowFunction_m_flow.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_IDEAS_IDEAS_Fluid_BaseClasses_FlowModels_Validation_InvertingBasicFlowFunction_m_flow_fmu --startTime=0 --stopTime=1 --stepSize=0.0004 --timeout=50 --tolerance=1e-06 IDEAS_IDEAS_Fluid_BaseClasses_FlowModels_Validation_InvertingBasicFlowFunction_m_flow.fmu > IDEAS_IDEAS.Fluid.BaseClasses.FlowModels.Validation.InvertingBasicFlowFunction_m_flow.pipe 2>&1) [Timeout 52.5] [Calling sys.exit(0), Time elapsed: 10.030294730328023] Failed to read output from testmodel.py, exit status != 0: 7.453304382041097 7.464497204 7.459377569 Calling exit ...