Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Fluid.FixedResistances.Examples.HydraulicDiameter.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 0.001496/0.001496, allocations: 117.9 kB / 19.7 MB, free: 2.188 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 0.002037/0.002037, allocations: 219.7 kB / 23 MB, free: 5.004 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 1.458/1.458, allocations: 230.6 MB / 256.8 MB, free: 7.984 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 1.004/1.004, allocations: 150 MB / 463.2 MB, free: 10.46 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: "" <> buildModelFMU(IBPSA.Fluid.FixedResistances.Examples.HydraulicDiameter,fileNamePrefix="IBPSA_latest_IBPSA_Fluid_FixedResistances_Examples_HydraulicDiameter",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(IBPSA.Fluid.FixedResistances.Examples.HydraulicDiameter,fileNamePrefix="IBPSA_latest_IBPSA_Fluid_FixedResistances_Examples_HydraulicDiameter",fmuType="me",version="2.0",platforms={"static"}) [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 0.001954/0.001954, allocations: 66.2 kB / 0.6413 GB, free: 10.38 MB / 478.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2114/0.2133, allocations: 89.17 MB / 0.7283 GB, free: 1.281 MB / 0.545 GB Notification: Performance of NFInst.instantiate(IBPSA.Fluid.FixedResistances.Examples.HydraulicDiameter): time 0.02006/0.2334, allocations: 15.41 MB / 0.7434 GB, free: 1.809 MB / 0.5606 GB Notification: Performance of NFInst.instExpressions: time 0.006902/0.2403, allocations: 3.966 MB / 0.7473 GB, free: 13.83 MB / 0.5762 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0006221/0.2409, allocations: 31.75 kB / 0.7473 GB, free: 13.8 MB / 0.5762 GB Notification: Performance of NFTyping.typeComponents: time 0.0006583/0.2416, allocations: 190.7 kB / 0.7475 GB, free: 13.61 MB / 0.5762 GB Notification: Performance of NFTyping.typeBindings: time 0.002117/0.2437, allocations: 0.7193 MB / 0.7482 GB, free: 12.89 MB / 0.5762 GB Notification: Performance of NFTyping.typeClassSections: time 0.001478/0.2452, allocations: 0.5009 MB / 0.7487 GB, free: 12.39 MB / 0.5762 GB Notification: Performance of NFFlatten.flatten: time 0.001811/0.247, allocations: 1.114 MB / 0.7498 GB, free: 11.28 MB / 0.5762 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0004501/0.2474, allocations: 241.7 kB / 0.75 GB, free: 11.04 MB / 0.5762 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001007/0.2484, allocations: 490.2 kB / 0.7505 GB, free: 10.55 MB / 0.5762 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0003953/0.2488, allocations: 270.7 kB / 0.7507 GB, free: 10.29 MB / 0.5762 GB Notification: Performance of NFPackage.collectConstants: time 5.16e-05/0.2489, allocations: 20 kB / 0.7507 GB, free: 10.27 MB / 0.5762 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001431/0.2503, allocations: 0.7446 MB / 0.7515 GB, free: 9.523 MB / 0.5762 GB Notification: Performance of NFScalarize.scalarize: time 0.000111/0.2504, allocations: 75.69 kB / 0.7515 GB, free: 9.449 MB / 0.5762 GB Notification: Performance of NFVerifyModel.verify: time 0.000222/0.2507, allocations: 190.9 kB / 0.7517 GB, free: 9.262 MB / 0.5762 GB Notification: Performance of NFConvertDAE.convert: time 0.001231/0.2519, allocations: 0.7317 MB / 0.7524 GB, free: 8.527 MB / 0.5762 GB Notification: Performance of FrontEnd - DAE generated: time 4.529e-06/0.2519, allocations: 0 / 0.7524 GB, free: 8.527 MB / 0.5762 GB Notification: Performance of FrontEnd: time 1.523e-06/0.2519, allocations: 0 / 0.7524 GB, free: 8.527 MB / 0.5762 GB Notification: Performance of Transformations before backend: time 1.235e-05/0.2519, allocations: 0 / 0.7524 GB, free: 8.527 MB / 0.5762 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 40 * Number of variables: 40 Notification: Performance of Generate backend data structure: time 0.001274/0.2532, allocations: 0.7062 MB / 0.7531 GB, free: 7.789 MB / 0.5762 GB Notification: Performance of prepare preOptimizeDAE: time 4.406e-05/0.2532, allocations: 8.031 kB / 0.7531 GB, free: 7.781 MB / 0.5762 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 6.984e-05/0.2533, allocations: 50.73 kB / 0.7532 GB, free: 7.723 MB / 0.5762 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 9.459e-05/0.2534, allocations: 52.58 kB / 0.7532 GB, free: 7.672 MB / 0.5762 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001106/0.2545, allocations: 466.1 kB / 0.7537 GB, free: 7.191 MB / 0.5762 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.95e-05/0.2545, allocations: 12.33 kB / 0.7537 GB, free: 7.18 MB / 0.5762 GB Notification: Performance of preOpt expandDerOperator (simulation): time 3.567e-05/0.2546, allocations: 19.94 kB / 0.7537 GB, free: 7.16 MB / 0.5762 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.000394/0.2549, allocations: 179.2 kB / 0.7539 GB, free: 6.98 MB / 0.5762 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.211e-05/0.255, allocations: 0 / 0.7539 GB, free: 6.98 MB / 0.5762 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.425e-05/0.255, allocations: 8 kB / 0.7539 GB, free: 6.973 MB / 0.5762 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 8.226e-06/0.255, allocations: 8 kB / 0.7539 GB, free: 6.965 MB / 0.5762 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0003433/0.2553, allocations: 135.9 kB / 0.754 GB, free: 6.832 MB / 0.5762 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.00132/0.2567, allocations: 0.8286 MB / 0.7548 GB, free: 5.91 MB / 0.5762 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0002895/0.2569, allocations: 122.6 kB / 0.7549 GB, free: 5.781 MB / 0.5762 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0001617/0.2571, allocations: 68.81 kB / 0.755 GB, free: 5.711 MB / 0.5762 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0001738/0.2573, allocations: 27.97 kB / 0.755 GB, free: 5.684 MB / 0.5762 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.021e-05/0.2573, allocations: 38.5 kB / 0.7551 GB, free: 5.637 MB / 0.5762 GB Notification: Performance of pre-optimization done (n=12): time 2.054e-06/0.2573, allocations: 4 kB / 0.7551 GB, free: 5.633 MB / 0.5762 GB Notification: Performance of matching and sorting (n=12): time 0.0006251/0.2579, allocations: 216.7 kB / 0.7553 GB, free: 5.418 MB / 0.5762 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.822e-05/0.258, allocations: 55.41 kB / 0.7553 GB, free: 5.352 MB / 0.5762 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0004144/0.2584, allocations: 357.7 kB / 0.7557 GB, free: 4.992 MB / 0.5762 GB Notification: Performance of collectPreVariables (initialization): time 3.003e-05/0.2584, allocations: 29.7 kB / 0.7557 GB, free: 4.957 MB / 0.5762 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001627/0.2586, allocations: 200.4 kB / 0.7559 GB, free: 4.754 MB / 0.5762 GB Notification: Performance of collectInitialBindings (initialization): time 4.627e-05/0.2586, allocations: 47.58 kB / 0.7559 GB, free: 4.707 MB / 0.5762 GB Notification: Performance of simplifyInitialFunctions (initialization): time 6.53e-05/0.2587, allocations: 33.7 kB / 0.756 GB, free: 4.668 MB / 0.5762 GB Notification: Performance of setup shared object (initialization): time 0.0001735/0.2589, allocations: 342.8 kB / 0.7563 GB, free: 4.324 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001514/0.259, allocations: 52.77 kB / 0.7564 GB, free: 4.27 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0001832/0.2592, allocations: 92.25 kB / 0.7564 GB, free: 4.164 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0002934/0.2595, allocations: 117.6 kB / 0.7566 GB, free: 4.043 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.084e-06/0.2595, allocations: 0 / 0.7566 GB, free: 4.043 MB / 0.5762 GB Notification: Performance of matching and sorting (n=12) (initialization): time 0.0003896/0.2599, allocations: 185.2 kB / 0.7567 GB, free: 3.855 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 2.01e-05/0.2599, allocations: 8 kB / 0.7567 GB, free: 3.848 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.879e-06/0.2599, allocations: 0 / 0.7567 GB, free: 3.848 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.916e-05/0.26, allocations: 0 / 0.7567 GB, free: 3.848 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00017/0.2601, allocations: 31.92 kB / 0.7568 GB, free: 3.816 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 6.081e-06/0.2601, allocations: 0 / 0.7568 GB, free: 3.816 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.000208/0.2603, allocations: 31.86 kB / 0.7568 GB, free: 3.785 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.266e-05/0.2604, allocations: 4 kB / 0.7568 GB, free: 3.781 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0002371/0.2606, allocations: 152.1 kB / 0.7569 GB, free: 3.629 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0001885/0.2608, allocations: 88.25 kB / 0.757 GB, free: 3.527 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0002504/0.261, allocations: 113.7 kB / 0.7571 GB, free: 3.41 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 9.21e-07/0.261, allocations: 0 / 0.7571 GB, free: 3.41 MB / 0.5762 GB Notification: Performance of matching and sorting (n=12) (initialization_lambda0): time 0.0003602/0.2614, allocations: 177.3 kB / 0.7573 GB, free: 3.23 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 9.518e-06/0.2614, allocations: 4 kB / 0.7573 GB, free: 3.227 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.506e-06/0.2614, allocations: 4 kB / 0.7573 GB, free: 3.223 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.805e-06/0.2614, allocations: 8 kB / 0.7573 GB, free: 3.215 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001095/0.2615, allocations: 19.98 kB / 0.7573 GB, free: 3.195 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.014e-06/0.2615, allocations: 4 kB / 0.7573 GB, free: 3.191 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0001746/0.2617, allocations: 15.94 kB / 0.7574 GB, free: 3.176 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 1.938e-05/0.2617, allocations: 11.98 kB / 0.7574 GB, free: 3.164 MB / 0.5762 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 2 * 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 (12): * Single equations (assignments): 12 * 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 0.0001788/0.2619, allocations: 196.1 kB / 0.7576 GB, free: 2.965 MB / 0.5762 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 6.142e-05/0.262, allocations: 35.86 kB / 0.7576 GB, free: 2.93 MB / 0.5762 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0005319/0.2625, allocations: 241.8 kB / 0.7578 GB, free: 2.684 MB / 0.5762 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.885e-06/0.2625, allocations: 0 / 0.7578 GB, free: 2.684 MB / 0.5762 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.218e-06/0.2625, allocations: 0 / 0.7578 GB, free: 2.684 MB / 0.5762 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.098e-06/0.2625, allocations: 0 / 0.7578 GB, free: 2.684 MB / 0.5762 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001022/0.2635, allocations: 0.6091 MB / 0.7584 GB, free: 2.016 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.828e-06/0.2635, allocations: 0 / 0.7584 GB, free: 2.016 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001092/0.2636, allocations: 27.97 kB / 0.7584 GB, free: 1.988 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (simulation): time 2.654e-06/0.2636, allocations: 3.938 kB / 0.7584 GB, free: 1.984 MB / 0.5762 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.313e-05/0.2637, allocations: 8 kB / 0.7585 GB, free: 1.977 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 2.004e-06/0.2637, allocations: 0 / 0.7585 GB, free: 1.977 MB / 0.5762 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.873e-06/0.2637, allocations: 4 kB / 0.7585 GB, free: 1.973 MB / 0.5762 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0004592/0.2641, allocations: 321.8 kB / 0.7588 GB, free: 1.633 MB / 0.5762 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001077/0.2642, allocations: 51.73 kB / 0.7588 GB, free: 1.582 MB / 0.5762 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 4.034e-05/0.2643, allocations: 0 / 0.7588 GB, free: 1.582 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0001996/0.2645, allocations: 19.94 kB / 0.7588 GB, free: 1.562 MB / 0.5762 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 6.454e-05/0.2645, allocations: 23.84 kB / 0.7589 GB, free: 1.539 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.624e-05/0.2645, allocations: 8 kB / 0.7589 GB, free: 1.531 MB / 0.5762 GB Notification: Performance of sorting global known variables: time 0.0002954/0.2648, allocations: 255.2 kB / 0.7591 GB, free: 1.285 MB / 0.5762 GB Notification: Performance of sort global known variables: time 1.01e-07/0.2648, allocations: 4 kB / 0.7591 GB, free: 1.281 MB / 0.5762 GB Notification: Performance of remove unused functions: time 0.0006555/0.2655, allocations: 191.4 kB / 0.7593 GB, free: 1.094 MB / 0.5762 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * 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 (14): * Single equations (assignments): 12 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 2 * When equations: 0 * 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 0.001199/0.2667, allocations: 0.9888 MB / 0.7603 GB, free: 76 kB / 0.5762 GB Notification: Performance of simCode: created initialization part: time 0.3639/0.6306, allocations: 185.7 kB / 0.7604 GB, free: 36.09 MB / 0.5762 GB Notification: Performance of simCode: created event and clocks part: time 7.444e-06/0.6306, allocations: 0.5312 kB / 0.7604 GB, free: 36.09 MB / 0.5762 GB Notification: Performance of simCode: created simulation system equations: time 0.0001976/0.6308, allocations: 75.97 kB / 0.7605 GB, free: 36.09 MB / 0.5762 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0009525/0.6317, allocations: 150.7 kB / 0.7607 GB, free: 36.09 MB / 0.5762 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003294/0.635, allocations: 2.77 MB / 0.7634 GB, free: 34.68 MB / 0.5762 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0002342/0.6352, allocations: 0.7996 MB / 0.7641 GB, free: 33.98 MB / 0.5762 GB Notification: Performance of simCode: alias equations: time 0.0002374/0.6355, allocations: 76.59 kB / 0.7642 GB, free: 33.97 MB / 0.5762 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001387/0.6356, allocations: 116.9 kB / 0.7643 GB, free: 33.96 MB / 0.5762 GB Notification: Performance of SimCode: time 1.222e-06/0.6356, allocations: 2.656 kB / 0.7643 GB, free: 33.96 MB / 0.5762 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.04373/0.6794, allocations: 10.4 MB / 0.7745 GB, free: 33.08 MB / 0.5762 GB Notification: Performance of buildModelFMU: Generate platform static: time 11.79/12.47, allocations: 10.33 kB / 0.7745 GB, free: 33.08 MB / 0.5762 GB " [Timeout remaining time 647] (rm -f IBPSA_latest_IBPSA.Fluid.FixedResistances.Examples.HydraulicDiameter.pipe ; mkfifo IBPSA_latest_IBPSA.Fluid.FixedResistances.Examples.HydraulicDiameter.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Fluid.FixedResistances.Examples.HydraulicDiameter.pipe >> ../files/IBPSA_latest_IBPSA.Fluid.FixedResistances.Examples.HydraulicDiameter.sim & python3 -m fmpy simulate --output-file IBPSA_latest_IBPSA.Fluid.FixedResistances.Examples.HydraulicDiameter_res.csv --start-time 0 --stop-time 1 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.0004 IBPSA_latest_IBPSA_Fluid_FixedResistances_Examples_HydraulicDiameter.fmu > IBPSA_latest_IBPSA.Fluid.FixedResistances.Examples.HydraulicDiameter.pipe 2>&1) [Timeout 52.5] [Calling sys.exit(0), Time elapsed: 16.303662575999624] Failed to read output from testmodel.py, exit status != 0: 12.580450785997527 12.593521725 12.33890071 Calling exit ...