Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.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 0.001798/0.001798, 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 0.002195/0.002195, allocations: 220.2 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 1.518/1.518, 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 0.9694/0.9694, allocations: 150 MB / 463.9 MB, free: 10.51 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.MixingVolumes.Validation.MixingVolumeSteadyStateMass,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass") translateModel(IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass") [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 0.002077/0.002077, allocations: 65.97 kB / 0.6425 GB, free: 9.926 MB / 478.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2108/0.2129, allocations: 89.17 MB / 0.7296 GB, free: 0.8086 MB / 0.545 GB Notification: Performance of NFInst.instantiate(IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass): time 0.6991/0.912, allocations: 180.9 MB / 0.9062 GB, free: 2.098 MB / 0.67 GB Notification: Performance of NFInst.instExpressions: time 0.008954/0.921, allocations: 4.449 MB / 0.9106 GB, free: 13.64 MB / 0.6856 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001284/0.9223, allocations: 35.69 kB / 0.9106 GB, free: 13.61 MB / 0.6856 GB Notification: Performance of NFTyping.typeComponents: time 0.001402/0.9237, allocations: 373.7 kB / 0.911 GB, free: 13.24 MB / 0.6856 GB Notification: Performance of NFTyping.typeBindings: time 0.004235/0.9279, allocations: 1.326 MB / 0.9123 GB, free: 11.91 MB / 0.6856 GB Notification: Performance of NFTyping.typeClassSections: time 0.002322/0.9302, allocations: 0.7242 MB / 0.913 GB, free: 11.18 MB / 0.6856 GB Notification: Performance of NFFlatten.flatten: time 0.002971/0.9332, allocations: 1.663 MB / 0.9146 GB, free: 9.516 MB / 0.6856 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0009326/0.9341, allocations: 410.3 kB / 0.915 GB, free: 9.117 MB / 0.6856 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002435/0.9366, allocations: 0.9303 MB / 0.9159 GB, free: 8.184 MB / 0.6856 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001656/0.9382, allocations: 0.5151 MB / 0.9164 GB, free: 7.672 MB / 0.6856 GB Notification: Performance of NFPackage.collectConstants: time 0.0001967/0.9384, allocations: 55.94 kB / 0.9165 GB, free: 7.617 MB / 0.6856 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003007/0.9414, allocations: 1.348 MB / 0.9178 GB, free: 6.266 MB / 0.6856 GB Notification: Performance of NFScalarize.scalarize: time 0.0004658/0.9419, allocations: 243.2 kB / 0.918 GB, free: 6.027 MB / 0.6856 GB Notification: Performance of NFVerifyModel.verify: time 0.0008145/0.9427, allocations: 354.3 kB / 0.9184 GB, free: 5.68 MB / 0.6856 GB Notification: Performance of NFConvertDAE.convert: time 0.003163/0.9459, allocations: 1.293 MB / 0.9196 GB, free: 4.383 MB / 0.6856 GB Notification: Performance of FrontEnd - DAE generated: time 5.781e-06/0.9459, allocations: 0 / 0.9196 GB, free: 4.383 MB / 0.6856 GB Notification: Performance of FrontEnd: time 2.024e-06/0.9459, allocations: 0 / 0.9196 GB, free: 4.383 MB / 0.6856 GB Notification: Performance of Transformations before backend: time 3.865e-05/0.9459, allocations: 0 / 0.9196 GB, free: 4.383 MB / 0.6856 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 0.002483/0.9484, allocations: 0.9516 MB / 0.9205 GB, free: 3.398 MB / 0.6856 GB Notification: Performance of prepare preOptimizeDAE: time 4.188e-05/0.9484, allocations: 8.031 kB / 0.9206 GB, free: 3.391 MB / 0.6856 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001255/0.9497, allocations: 183.4 kB / 0.9207 GB, free: 3.211 MB / 0.6856 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001148/0.9508, allocations: 0.4996 MB / 0.9212 GB, free: 2.684 MB / 0.6856 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.605e-05/0.9509, allocations: 33 kB / 0.9212 GB, free: 2.648 MB / 0.6856 GB Notification: Performance of preOpt expandDerOperator (simulation): time 9.188e-05/0.951, allocations: 40 kB / 0.9213 GB, free: 2.609 MB / 0.6856 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.000984/0.952, allocations: 470.3 kB / 0.9217 GB, free: 2.141 MB / 0.6856 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.619e-05/0.952, allocations: 4 kB / 0.9217 GB, free: 2.137 MB / 0.6856 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.604e-05/0.952, allocations: 16 kB / 0.9218 GB, free: 2.121 MB / 0.6856 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.43e-05/0.9521, allocations: 13 kB / 0.9218 GB, free: 2.109 MB / 0.6856 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0008715/0.9529, allocations: 423.7 kB / 0.9222 GB, free: 1.695 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 0.003445/0.9564, allocations: 2.071 MB / 0.9242 GB, free: 15.43 MB / 0.7012 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0005695/0.9569, allocations: 274.7 kB / 0.9245 GB, free: 15.16 MB / 0.7012 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003458/0.9573, allocations: 175.3 kB / 0.9246 GB, free: 14.98 MB / 0.7012 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002414/0.9575, allocations: 43.97 kB / 0.9247 GB, free: 14.94 MB / 0.7012 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.403e-05/0.9576, allocations: 38.56 kB / 0.9247 GB, free: 14.89 MB / 0.7012 GB Notification: Performance of pre-optimization done (n=30): time 1.803e-06/0.9576, allocations: 0 / 0.9247 GB, free: 14.89 MB / 0.7012 GB Notification: Performance of matching and sorting (n=30): time 0.001756/0.9593, allocations: 0.5689 MB / 0.9253 GB, free: 14.32 MB / 0.7012 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.161e-05/0.9594, allocations: 51.41 kB / 0.9253 GB, free: 14.25 MB / 0.7012 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0006102/0.96, allocations: 454 kB / 0.9257 GB, free: 13.8 MB / 0.7012 GB Notification: Performance of collectPreVariables (initialization): time 4.855e-05/0.96, allocations: 33.7 kB / 0.9258 GB, free: 13.76 MB / 0.7012 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002532/0.9603, allocations: 288.5 kB / 0.926 GB, free: 13.47 MB / 0.7012 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001364/0.9604, allocations: 119 kB / 0.9262 GB, free: 13.36 MB / 0.7012 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001198/0.9605, allocations: 69.59 kB / 0.9262 GB, free: 13.28 MB / 0.7012 GB Notification: Performance of setup shared object (initialization): time 0.0002053/0.9608, allocations: 358.8 kB / 0.9266 GB, free: 12.92 MB / 0.7012 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002898/0.961, allocations: 136.3 kB / 0.9267 GB, free: 12.79 MB / 0.7012 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0003546/0.9614, allocations: 206.8 kB / 0.9269 GB, free: 12.56 MB / 0.7012 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0006108/0.962, allocations: 324.9 kB / 0.9272 GB, free: 12.23 MB / 0.7012 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.825e-06/0.962, allocations: 0 / 0.9272 GB, free: 12.23 MB / 0.7012 GB Notification: Performance of matching and sorting (n=37) (initialization): time 0.0008031/0.9628, allocations: 409 kB / 0.9276 GB, free: 11.82 MB / 0.7012 GB Notification: Performance of prepare postOptimizeDAE: time 2.074e-05/0.9628, allocations: 12.16 kB / 0.9276 GB, free: 11.81 MB / 0.7012 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.732e-06/0.9628, allocations: 0 / 0.9276 GB, free: 11.81 MB / 0.7012 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.187e-05/0.9629, allocations: 4 kB / 0.9276 GB, free: 11.8 MB / 0.7012 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003731/0.9632, allocations: 67.89 kB / 0.9277 GB, free: 11.74 MB / 0.7012 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.354e-05/0.9632, allocations: 4 kB / 0.9277 GB, free: 11.73 MB / 0.7012 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004562/0.9637, allocations: 39.77 kB / 0.9277 GB, free: 11.7 MB / 0.7012 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.638e-05/0.9637, allocations: 8 kB / 0.9277 GB, free: 11.69 MB / 0.7012 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0004763/0.9642, allocations: 296 kB / 0.928 GB, free: 11.39 MB / 0.7012 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0003481/0.9646, allocations: 200 kB / 0.9282 GB, free: 11.18 MB / 0.7012 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.000606/0.9652, allocations: 328.9 kB / 0.9285 GB, free: 10.84 MB / 0.7012 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.833e-06/0.9652, allocations: 0 / 0.9285 GB, free: 10.84 MB / 0.7012 GB Notification: Performance of matching and sorting (n=37) (initialization_lambda0): time 0.0007715/0.9659, allocations: 409.4 kB / 0.9289 GB, free: 10.43 MB / 0.7012 GB Notification: Performance of prepare postOptimizeDAE: time 1.13e-05/0.966, allocations: 10.34 kB / 0.9289 GB, free: 10.42 MB / 0.7012 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.96e-06/0.966, allocations: 4 kB / 0.9289 GB, free: 10.42 MB / 0.7012 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.788e-06/0.966, allocations: 0 / 0.9289 GB, free: 10.42 MB / 0.7012 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003234/0.9663, allocations: 75.89 kB / 0.929 GB, free: 10.34 MB / 0.7012 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 4.909e-06/0.9663, allocations: 0 / 0.929 GB, free: 10.34 MB / 0.7012 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004281/0.9667, allocations: 31.83 kB / 0.929 GB, free: 10.31 MB / 0.7012 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.202e-05/0.9668, allocations: 16 kB / 0.929 GB, free: 10.3 MB / 0.7012 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 6 * 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 (37): * Single equations (assignments): 37 * 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 0.0001904/0.967, allocations: 200.2 kB / 0.9292 GB, free: 10.09 MB / 0.7012 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001072/0.9671, allocations: 51.66 kB / 0.9293 GB, free: 10.04 MB / 0.7012 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0009183/0.968, allocations: 424.8 kB / 0.9297 GB, free: 9.621 MB / 0.7012 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.583e-06/0.968, allocations: 4 kB / 0.9297 GB, free: 9.617 MB / 0.7012 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.302e-06/0.968, allocations: 0 / 0.9297 GB, free: 9.617 MB / 0.7012 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.000772/0.9688, allocations: 450.3 kB / 0.9301 GB, free: 9.145 MB / 0.7012 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002074/0.9708, allocations: 1.105 MB / 0.9312 GB, free: 7.969 MB / 0.7012 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.527e-06/0.9708, allocations: 0 / 0.9312 GB, free: 7.969 MB / 0.7012 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003051/0.9711, allocations: 59.84 kB / 0.9312 GB, free: 7.91 MB / 0.7012 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0002313/0.9714, allocations: 48.81 kB / 0.9313 GB, free: 7.859 MB / 0.7012 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.988e-05/0.9714, allocations: 12.22 kB / 0.9313 GB, free: 7.848 MB / 0.7012 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001579/0.973, allocations: 1.446 MB / 0.9327 GB, free: 6.293 MB / 0.7012 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.398e-06/0.973, allocations: 7.875 kB / 0.9327 GB, free: 6.285 MB / 0.7012 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00124/0.9742, allocations: 0.7011 MB / 0.9334 GB, free: 5.543 MB / 0.7012 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002567/0.9745, allocations: 91.59 kB / 0.9335 GB, free: 5.453 MB / 0.7012 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.483e-05/0.9746, allocations: 8 kB / 0.9335 GB, free: 5.445 MB / 0.7012 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0004008/0.975, allocations: 15.98 kB / 0.9335 GB, free: 5.43 MB / 0.7012 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.989e-05/0.975, allocations: 39.81 kB / 0.9336 GB, free: 5.391 MB / 0.7012 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.658e-05/0.9751, allocations: 12 kB / 0.9336 GB, free: 5.379 MB / 0.7012 GB Notification: Performance of sorting global known variables: time 0.00041/0.9755, allocations: 314.9 kB / 0.9339 GB, free: 5.074 MB / 0.7012 GB Notification: Performance of sort global known variables: time 1.1e-07/0.9755, allocations: 4 kB / 0.9339 GB, free: 5.07 MB / 0.7012 GB Notification: Performance of remove unused functions: time 0.0009189/0.9764, allocations: 299.5 kB / 0.9342 GB, free: 4.777 MB / 0.7012 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * Number of states: 2 (vol.dynBal.medium.Xi[1],vol.dynBal.U) * 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 (28): * Single equations (assignments): 27 * 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 {(1,2,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0003597/0.9768, allocations: 175.9 kB / 0.9343 GB, free: 4.598 MB / 0.7012 GB Notification: Performance of simCode: created initialization part: time 0.001116/0.9779, allocations: 464 kB / 0.9348 GB, free: 4.145 MB / 0.7012 GB Notification: Performance of simCode: created event and clocks part: time 6.803e-06/0.9779, allocations: 4 kB / 0.9348 GB, free: 4.141 MB / 0.7012 GB Notification: Performance of simCode: created simulation system equations: time 0.0005532/0.9784, allocations: 282.4 kB / 0.935 GB, free: 3.852 MB / 0.7012 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00165/0.9801, allocations: 315.3 kB / 0.9353 GB, free: 3.566 MB / 0.7012 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00209/0.9822, allocations: 1.136 MB / 0.9364 GB, free: 2.367 MB / 0.7012 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006657/0.9828, allocations: 0.9014 MB / 0.9373 GB, free: 1.438 MB / 0.7012 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001569/0.983, allocations: 39.44 kB / 0.9374 GB, free: 1.398 MB / 0.7012 GB Notification: Performance of SimCode: time 1.182e-06/0.983, allocations: 0 / 0.9374 GB, free: 1.398 MB / 0.7012 GB Notification: Performance of Templates: time 0.01715/1, allocations: 9.741 MB / 0.9469 GB, free: 7.758 MB / 0.7169 GB " [Timeout remaining time 659] make -j1 -f IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.makefile [Timeout 660] (rm -f IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.pipe ; mkfifo IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.pipe >> ../files/IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.sim & ./IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass -abortSlowSimulation -alarm=480 -lv LOG_STATS > IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.pipe 2>&1) [Timeout 480] [Calling sys.exit(0), Time elapsed: 11.316155774053186] Failed to read output from testmodel.py, exit status != 0: 1.0097092599608004 1.025807068 0.076426569 Calling exit ...