Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Fluid.HeatPumps.ModularReversible.Controls.Safety.Examples.OperationalEnvelope.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 0.001511/0.001511, allocations: 105 kB / 20.45 MB, free: 1.5 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 0.001677/0.001677, allocations: 217.4 kB / 23.76 MB, free: 4.711 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 1.466/1.466, allocations: 230.6 MB / 257.5 MB, free: 8 MB / 206.1 MB " [Timeout remaining time 178] 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 0.9725/0.9725, allocations: 150 MB / 463.9 MB, free: 10.47 MB / 366.1 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: translateModel(IBPSA.Fluid.HeatPumps.ModularReversible.Controls.Safety.Examples.OperationalEnvelope,tolerance=1e-08,outputFormat="empty",numberOfIntervals=100,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.HeatPumps.ModularReversible.Controls.Safety.Examples.OperationalEnvelope") translateModel(IBPSA.Fluid.HeatPumps.ModularReversible.Controls.Safety.Examples.OperationalEnvelope,tolerance=1e-08,outputFormat="empty",numberOfIntervals=100,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.HeatPumps.ModularReversible.Controls.Safety.Examples.OperationalEnvelope") [Timeout 660] "Notification: IBPSA 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 0.002344/0.002344, allocations: 71.55 kB / 0.6425 GB, free: 9.793 MB / 478.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2016/0.204, allocations: 89.16 MB / 0.7296 GB, free: 0.6836 MB / 0.545 GB Notification: Performance of NFInst.instantiate(IBPSA.Fluid.HeatPumps.ModularReversible.Controls.Safety.Examples.OperationalEnvelope): time 0.006427/0.2104, allocations: 3.324 MB / 0.7329 GB, free: 13.34 MB / 0.5606 GB Notification: Performance of NFInst.instExpressions: time 0.003655/0.2141, allocations: 1.551 MB / 0.7344 GB, free: 11.78 MB / 0.5606 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0006373/0.2147, allocations: 11.94 kB / 0.7344 GB, free: 11.77 MB / 0.5606 GB Notification: Performance of NFTyping.typeComponents: time 0.0006035/0.2153, allocations: 111 kB / 0.7345 GB, free: 11.66 MB / 0.5606 GB Notification: Performance of NFTyping.typeBindings: time 0.001154/0.2165, allocations: 314.3 kB / 0.7348 GB, free: 11.35 MB / 0.5606 GB Notification: Performance of NFTyping.typeClassSections: time 0.001064/0.2175, allocations: 361.4 kB / 0.7351 GB, free: 11 MB / 0.5606 GB Notification: Performance of NFFlatten.flatten: time 0.001535/0.2191, allocations: 0.9 MB / 0.736 GB, free: 10.1 MB / 0.5606 GB Notification: Performance of NFFlatten.resolveConnections: time 0.000587/0.2196, allocations: 245 kB / 0.7363 GB, free: 9.855 MB / 0.5606 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0006092/0.2202, allocations: 354.7 kB / 0.7366 GB, free: 9.508 MB / 0.5606 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0006286/0.2209, allocations: 450.2 kB / 0.737 GB, free: 9.066 MB / 0.5606 GB Notification: Performance of NFPackage.collectConstants: time 0.0001586/0.221, allocations: 92 kB / 0.7371 GB, free: 8.977 MB / 0.5606 GB Notification: Performance of NFFlatten.collectFunctions: time 0.000277/0.2213, allocations: 128 kB / 0.7372 GB, free: 8.852 MB / 0.5606 GB Notification: Performance of NFScalarize.scalarize: time 0.0002949/0.2216, allocations: 271.1 kB / 0.7375 GB, free: 8.586 MB / 0.5606 GB Notification: Performance of NFVerifyModel.verify: time 0.0004043/0.222, allocations: 398 kB / 0.7379 GB, free: 8.195 MB / 0.5606 GB Notification: Performance of NFConvertDAE.convert: time 0.001449/0.2235, allocations: 1.202 MB / 0.739 GB, free: 6.988 MB / 0.5606 GB Notification: Performance of FrontEnd - DAE generated: time 7.965e-06/0.2235, allocations: 8 kB / 0.7391 GB, free: 6.98 MB / 0.5606 GB Notification: Performance of FrontEnd: time 2.054e-06/0.2235, allocations: 0 / 0.7391 GB, free: 6.98 MB / 0.5606 GB Notification: Performance of Transformations before backend: time 1.273e-05/0.2235, allocations: 0 / 0.7391 GB, free: 6.98 MB / 0.5606 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 104 * Number of variables: 104 Notification: Performance of Generate backend data structure: time 0.002526/0.226, allocations: 1.173 MB / 0.7402 GB, free: 5.766 MB / 0.5606 GB Notification: Performance of prepare preOptimizeDAE: time 3.961e-05/0.226, allocations: 8.031 kB / 0.7402 GB, free: 5.758 MB / 0.5606 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0002977/0.2263, allocations: 96.41 kB / 0.7403 GB, free: 5.664 MB / 0.5606 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001414/0.2278, allocations: 0.6496 MB / 0.7409 GB, free: 4.988 MB / 0.5606 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.444e-05/0.2278, allocations: 37 kB / 0.741 GB, free: 4.949 MB / 0.5606 GB Notification: Performance of preOpt expandDerOperator (simulation): time 7.213e-05/0.2279, allocations: 40 kB / 0.741 GB, free: 4.91 MB / 0.5606 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001078/0.229, allocations: 0.539 MB / 0.7415 GB, free: 4.336 MB / 0.5606 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.454e-05/0.229, allocations: 0 / 0.7415 GB, free: 4.336 MB / 0.5606 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.156e-05/0.229, allocations: 20 kB / 0.7416 GB, free: 4.316 MB / 0.5606 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.336e-05/0.229, allocations: 12 kB / 0.7416 GB, free: 4.305 MB / 0.5606 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001001/0.23, allocations: 387.7 kB / 0.7419 GB, free: 3.926 MB / 0.5606 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002538/0.2326, allocations: 1.374 MB / 0.7433 GB, free: 2.504 MB / 0.5606 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0009457/0.2335, allocations: 314.8 kB / 0.7436 GB, free: 2.188 MB / 0.5606 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0004353/0.234, allocations: 168.7 kB / 0.7437 GB, free: 2.02 MB / 0.5606 GB Notification: Performance of preOpt evalFunc (simulation): time 4.238e-05/0.234, allocations: 4 kB / 0.7437 GB, free: 2.016 MB / 0.5606 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0006554/0.2346, allocations: 283.1 kB / 0.744 GB, free: 1.719 MB / 0.5606 GB Notification: Performance of pre-optimization done (n=33): time 2.084e-06/0.2347, allocations: 0 / 0.744 GB, free: 1.719 MB / 0.5606 GB Notification: Performance of matching and sorting (n=33): time 0.001504/0.2362, allocations: 0.5283 MB / 0.7445 GB, free: 1.184 MB / 0.5606 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001103/0.2363, allocations: 158.2 kB / 0.7447 GB, free: 0.9922 MB / 0.5606 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001124/0.2374, allocations: 0.8282 MB / 0.7455 GB, free: 156 kB / 0.5606 GB Notification: Performance of collectPreVariables (initialization): time 6.557e-05/0.2375, allocations: 53.72 kB / 0.7455 GB, free: 96 kB / 0.5606 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003291/0.2378, allocations: 332.8 kB / 0.7459 GB, free: 15.77 MB / 0.5762 GB Notification: Performance of collectInitialBindings (initialization): time 8.992e-05/0.2379, allocations: 95.25 kB / 0.7459 GB, free: 15.67 MB / 0.5762 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001583/0.238, allocations: 94.11 kB / 0.746 GB, free: 15.57 MB / 0.5762 GB Notification: Performance of setup shared object (initialization): time 0.0001966/0.2382, allocations: 374.8 kB / 0.7464 GB, free: 15.2 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004841/0.2387, allocations: 172.8 kB / 0.7466 GB, free: 15.03 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005337/0.2392, allocations: 248.8 kB / 0.7468 GB, free: 14.76 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0008752/0.2401, allocations: 377.1 kB / 0.7472 GB, free: 14.36 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.116e-06/0.2401, allocations: 4 kB / 0.7472 GB, free: 14.36 MB / 0.5762 GB Notification: Performance of matching and sorting (n=51) (initialization): time 0.001285/0.2414, allocations: 0.5624 MB / 0.7477 GB, free: 13.77 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 6.843e-05/0.2415, allocations: 63.39 kB / 0.7478 GB, free: 13.7 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.376e-06/0.2415, allocations: 0 / 0.7478 GB, free: 13.7 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.856e-05/0.2415, allocations: 8 kB / 0.7478 GB, free: 13.69 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000289/0.2418, allocations: 59.83 kB / 0.7478 GB, free: 13.63 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.671e-05/0.2418, allocations: 4 kB / 0.7478 GB, free: 13.63 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005086/0.2423, allocations: 75.8 kB / 0.7479 GB, free: 13.55 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.007e-05/0.2424, allocations: 16 kB / 0.7479 GB, free: 13.54 MB / 0.5762 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 7 * Number of states: 0 () * Number of discrete variables: 37 (opeEnv.disErr.y,$PRE.opeEnv.disErr.y,ySetOn.y,$PRE.ySetOn.y,TEvaInEmu.count,$PRE.TEvaInEmu.count,TEvaInEmu.T_start,$PRE.TEvaInEmu.T_start,TConOutEmu.count,$PRE.TConOutEmu.count,TConOutEmu.T_start,$PRE.TConOutEmu.T_start,opeEnv.bouMapCoo.hysBou.y,$PRE.opeEnv.bouMapCoo.hysBou.y,opeEnv.bouMapCoo.hysRig.y,$PRE.opeEnv.bouMapCoo.hysRig.y,opeEnv.bouMapCoo.hysLef.y,$PRE.opeEnv.bouMapCoo.hysLef.y,opeEnv.bouMapCoo.noErr,opeEnv.bouMapHea.hysBou.y,$PRE.opeEnv.bouMapHea.hysBou.y,opeEnv.bouMapHea.hysRig.y,$PRE.opeEnv.bouMapHea.hysRig.y,opeEnv.bouMapHea.hysLef.y,$PRE.opeEnv.bouMapHea.hysLef.y,opeEnv.bouMapHea.noErr,opeEnv.canOpe,opeEnv.errAndSetOn.y,hys.y,$PRE.hys.y,sigBus.hea,$whenCondition1,$whenCondition2,$whenCondition3,opeEnv.intConOne.y,opeEnv.disErr.local_set,opeEnv.disErr.local_reset) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (49): * Single equations (assignments): 47 * Array equations: 0 * Algorithm blocks: 2 * 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 0.0003767/0.2428, allocations: 261.6 kB / 0.7482 GB, free: 13.27 MB / 0.5762 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001462/0.2429, allocations: 67.58 kB / 0.7482 GB, free: 13.21 MB / 0.5762 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001142/0.244, allocations: 432 kB / 0.7486 GB, free: 12.78 MB / 0.5762 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.612e-06/0.2441, allocations: 4 kB / 0.7487 GB, free: 12.77 MB / 0.5762 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.999e-06/0.2441, allocations: 0 / 0.7487 GB, free: 12.77 MB / 0.5762 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.669e-06/0.2441, allocations: 0 / 0.7487 GB, free: 12.77 MB / 0.5762 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002092/0.2462, allocations: 1.138 MB / 0.7498 GB, free: 11.59 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.909e-06/0.2462, allocations: 4 kB / 0.7498 GB, free: 11.58 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002402/0.2464, allocations: 43.89 kB / 0.7498 GB, free: 11.54 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (simulation): time 6.762e-06/0.2464, allocations: 0 / 0.7498 GB, free: 11.54 MB / 0.5762 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.458e-05/0.2464, allocations: 16.02 kB / 0.7498 GB, free: 11.52 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 3.386e-06/0.2464, allocations: 0 / 0.7498 GB, free: 11.52 MB / 0.5762 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.296e-06/0.2464, allocations: 4 kB / 0.7498 GB, free: 11.52 MB / 0.5762 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001118/0.2476, allocations: 0.5746 MB / 0.7504 GB, free: 10.93 MB / 0.5762 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001835/0.2477, allocations: 87.42 kB / 0.7505 GB, free: 10.84 MB / 0.5762 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000123/0.2479, allocations: 16 kB / 0.7505 GB, free: 10.83 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000483/0.2484, allocations: 43.94 kB / 0.7505 GB, free: 10.79 MB / 0.5762 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002055/0.2486, allocations: 83.8 kB / 0.7506 GB, free: 10.7 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.314e-05/0.2486, allocations: 19.98 kB / 0.7506 GB, free: 10.68 MB / 0.5762 GB Notification: Performance of sorting global known variables: time 0.000841/0.2494, allocations: 0.581 MB / 0.7512 GB, free: 10.11 MB / 0.5762 GB Notification: Performance of sort global known variables: time 7e-08/0.2494, allocations: 0 / 0.7512 GB, free: 10.11 MB / 0.5762 GB Notification: Performance of remove unused functions: time 0.0005645/0.25, allocations: 123.8 kB / 0.7513 GB, free: 9.984 MB / 0.5762 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 2 * Number of states: 0 () * Number of discrete variables: 21 (opeEnv.errAndSetOn.y,$whenCondition3,$whenCondition2,$whenCondition1,sigBus.hea,hys.y,opeEnv.disErr.y,opeEnv.canOpe,opeEnv.bouMapHea.noErr,opeEnv.bouMapHea.hysLef.y,opeEnv.bouMapHea.hysRig.y,opeEnv.bouMapHea.hysBou.y,opeEnv.bouMapCoo.noErr,opeEnv.bouMapCoo.hysLef.y,opeEnv.bouMapCoo.hysRig.y,opeEnv.bouMapCoo.hysBou.y,TConOutEmu.T_start,TConOutEmu.count,TEvaInEmu.T_start,TEvaInEmu.count,ySetOn.y) * Number of discrete states: 11 (TEvaInEmu.count,TConOutEmu.count,ySetOn.y,opeEnv.bouMapCoo.hysLef.y,opeEnv.bouMapCoo.hysRig.y,opeEnv.bouMapHea.hysLef.y,opeEnv.bouMapHea.hysRig.y,opeEnv.bouMapCoo.hysBou.y,opeEnv.bouMapHea.hysBou.y,hys.y,opeEnv.disErr.y) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (33): * Single equations (assignments): 28 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 5 * 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 0.001452/0.2515, allocations: 393.4 kB / 0.7517 GB, free: 9.746 MB / 0.5762 GB Notification: Performance of simCode: created initialization part: time 0.001248/0.2527, allocations: 482.6 kB / 0.7522 GB, free: 9.25 MB / 0.5762 GB Notification: Performance of simCode: created event and clocks part: time 8.405e-06/0.2527, allocations: 8 kB / 0.7522 GB, free: 9.242 MB / 0.5762 GB Notification: Performance of simCode: created simulation system equations: time 0.0005207/0.2532, allocations: 175.8 kB / 0.7523 GB, free: 9.07 MB / 0.5762 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0009676/0.2542, allocations: 167.8 kB / 0.7525 GB, free: 8.918 MB / 0.5762 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002306/0.2565, allocations: 1.114 MB / 0.7536 GB, free: 7.766 MB / 0.5762 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006673/0.2572, allocations: 0.9142 MB / 0.7545 GB, free: 6.816 MB / 0.5762 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002323/0.2574, allocations: 63.41 kB / 0.7545 GB, free: 6.758 MB / 0.5762 GB Notification: Performance of SimCode: time 7.11e-07/0.2574, allocations: 0 / 0.7545 GB, free: 6.758 MB / 0.5762 GB Notification: Performance of Templates: time 0.3878/0.6452, allocations: 9.562 MB / 0.7639 GB, free: 33.86 MB / 0.5762 GB " [Timeout remaining time 659] make -j1 -f IBPSA_latest_IBPSA.Fluid.HeatPumps.ModularReversible.Controls.Safety.Examples.OperationalEnvelope.makefile [Timeout 660] (rm -f IBPSA_latest_IBPSA.Fluid.HeatPumps.ModularReversible.Controls.Safety.Examples.OperationalEnvelope.pipe ; mkfifo IBPSA_latest_IBPSA.Fluid.HeatPumps.ModularReversible.Controls.Safety.Examples.OperationalEnvelope.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Fluid.HeatPumps.ModularReversible.Controls.Safety.Examples.OperationalEnvelope.pipe >> ../files/IBPSA_latest_IBPSA.Fluid.HeatPumps.ModularReversible.Controls.Safety.Examples.OperationalEnvelope.sim & ./IBPSA_latest_IBPSA.Fluid.HeatPumps.ModularReversible.Controls.Safety.Examples.OperationalEnvelope -abortSlowSimulation -alarm=480 -lv LOG_STATS > IBPSA_latest_IBPSA.Fluid.HeatPumps.ModularReversible.Controls.Safety.Examples.OperationalEnvelope.pipe 2>&1) [Timeout 480] [Calling sys.exit(0), Time elapsed: 10.756229010876268] Failed to read output from testmodel.py, exit status != 0: 0.6549611240625381 0.669536632 0.442717731 Calling exit ...