Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildingSystems_BuildingSystems.Fluid.MixingVolumes.Validation.MixingVolumeMoistureReverseFlowPrescribedHeatFlowRate.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 0.001421/0.001421, allocations: 101.5 kB / 19.73 MB, free: 2.23 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 0.001601/0.001601, allocations: 217.6 kB / 23.04 MB, free: 5.074 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 1.362/1.362, allocations: 230.6 MB / 256.8 MB, free: 8 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 master/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 master/package.mo): time 0.002329/0.002329, allocations: 303.5 kB / 313.5 MB, free: 2.789 MB / 238.1 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems master/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems master/package.mo): time 1.185/1.185, allocations: 180.6 MB / 0.5377 GB, free: 13.02 MB / 382.1 MB " [Timeout remaining time 179] Using package BuildingSystems with version 2.0.0-beta (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems master/package.mo) Using package NcDataReader2 with version 2.5.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 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(BuildingSystems.Fluid.MixingVolumes.Validation.MixingVolumeMoistureReverseFlowPrescribedHeatFlowRate,fileNamePrefix="BuildingSystems_BuildingSystems_Fluid_MixingVolumes_Validation_MixingVolumeMoistureReverseFlowPrescribedHeatFlowRate",fmuType="cs",version="2.0",platforms={"static"}) "" <> buildModelFMU(BuildingSystems.Fluid.MixingVolumes.Validation.MixingVolumeMoistureReverseFlowPrescribedHeatFlowRate,fileNamePrefix="BuildingSystems_BuildingSystems_Fluid_MixingVolumes_Validation_MixingVolumeMoistureReverseFlowPrescribedHeatFlowRate",fmuType="cs",version="2.0",platforms={"static"}) [Timeout 660] "Notification: NcDataReader2 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: BuildingSystems 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 0.002685/0.002685, allocations: 94.48 kB / 0.7404 GB, free: 28.19 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1625/0.1652, allocations: 95.38 MB / 0.8335 GB, free: 8.57 MB / 0.5762 GB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.MixingVolumes.Validation.MixingVolumeMoistureReverseFlowPrescribedHeatFlowRate): time 0.6331/0.7983, allocations: 225.5 MB / 1.054 GB, free: 2.57 MB / 0.7169 GB Notification: Performance of NFInst.instExpressions: time 0.007803/0.8061, allocations: 5.754 MB / 1.059 GB, free: 2.402 MB / 0.7169 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001371/0.8075, allocations: 59.03 kB / 1.059 GB, free: 2.398 MB / 0.7169 GB Notification: Performance of NFTyping.typeComponents: time 0.001347/0.8088, allocations: 0.6069 MB / 1.06 GB, free: 2.383 MB / 0.7169 GB Notification: Performance of NFTyping.typeBindings: time 0.003796/0.8126, allocations: 1.714 MB / 1.062 GB, free: 2.316 MB / 0.7169 GB Notification: Performance of NFTyping.typeClassSections: time 0.002989/0.8156, allocations: 1.263 MB / 1.063 GB, free: 2.262 MB / 0.7169 GB Notification: Performance of NFFlatten.flatten: time 0.003051/0.8186, allocations: 2.631 MB / 1.065 GB, free: 1.895 MB / 0.7169 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0008659/0.8195, allocations: 0.7049 MB / 1.066 GB, free: 1.586 MB / 0.7169 GB Notification: Performance of NFEvalConstants.evaluate: time 0.00175/0.8213, allocations: 1.118 MB / 1.067 GB, free: 1.254 MB / 0.7169 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002267/0.8235, allocations: 0.9135 MB / 1.068 GB, free: 0.9922 MB / 0.7169 GB Notification: Performance of NFPackage.collectConstants: time 0.0002159/0.8237, allocations: 98.47 kB / 1.068 GB, free: 0.9922 MB / 0.7169 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003505/0.8273, allocations: 1.643 MB / 1.07 GB, free: 0.6836 MB / 0.7169 GB Notification: Performance of NFScalarize.scalarize: time 0.0004071/0.8277, allocations: 421.4 kB / 1.07 GB, free: 0.5117 MB / 0.7169 GB Notification: Performance of NFVerifyModel.verify: time 0.0006686/0.8283, allocations: 0.5836 MB / 1.071 GB, free: 188 kB / 0.7169 GB Notification: Performance of NFConvertDAE.convert: time 0.003614/0.8319, allocations: 2.03 MB / 1.073 GB, free: 15.59 MB / 0.7325 GB Notification: Performance of FrontEnd - DAE generated: time 4.729e-06/0.8319, allocations: 0 / 1.073 GB, free: 15.59 MB / 0.7325 GB Notification: Performance of FrontEnd: time 1.463e-06/0.8319, allocations: 0.9375 kB / 1.073 GB, free: 15.59 MB / 0.7325 GB Notification: Performance of Transformations before backend: time 1.541e-05/0.832, allocations: 2.531 kB / 1.073 GB, free: 15.59 MB / 0.7325 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 189 * Number of variables: 189 Notification: Performance of Generate backend data structure: time 0.002371/0.8343, allocations: 1.389 MB / 1.074 GB, free: 14.72 MB / 0.7325 GB Notification: Performance of prepare preOptimizeDAE: time 3.978e-05/0.8344, allocations: 10.81 kB / 1.074 GB, free: 14.72 MB / 0.7325 GB Notification: Performance of preOpt introduceOutputRealDerivatives (simulation): time 2.952e-05/0.8344, allocations: 20.88 kB / 1.074 GB, free: 14.71 MB / 0.7325 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001479/0.8346, allocations: 125.6 kB / 1.074 GB, free: 14.63 MB / 0.7325 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002445/0.837, allocations: 426.1 kB / 1.075 GB, free: 14.55 MB / 0.7325 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001438/0.8384, allocations: 0.725 MB / 1.075 GB, free: 14.12 MB / 0.7325 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.294e-05/0.8385, allocations: 56.28 kB / 1.075 GB, free: 14.09 MB / 0.7325 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001142/0.8386, allocations: 79.11 kB / 1.076 GB, free: 14.07 MB / 0.7325 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001757/0.8404, allocations: 0.9843 MB / 1.076 GB, free: 13.5 MB / 0.7325 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.366e-05/0.8404, allocations: 3.953 kB / 1.076 GB, free: 13.5 MB / 0.7325 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.146e-05/0.8405, allocations: 34.53 kB / 1.077 GB, free: 13.48 MB / 0.7325 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.701e-05/0.8405, allocations: 30.92 kB / 1.077 GB, free: 13.47 MB / 0.7325 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001808/0.8423, allocations: 0.8836 MB / 1.077 GB, free: 13.05 MB / 0.7325 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 0.005342/0.8476, allocations: 3.434 MB / 1.081 GB, free: 10.47 MB / 0.7325 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001449/0.8491, allocations: 0.5774 MB / 1.081 GB, free: 10.17 MB / 0.7325 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0007257/0.8498, allocations: 335.5 kB / 1.082 GB, free: 10 MB / 0.7325 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0001316/0.85, allocations: 24.31 kB / 1.082 GB, free: 9.996 MB / 0.7325 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.577e-05/0.85, allocations: 41.91 kB / 1.082 GB, free: 9.949 MB / 0.7325 GB Notification: Performance of pre-optimization done (n=39): time 1.894e-06/0.85, allocations: 0 / 1.082 GB, free: 9.949 MB / 0.7325 GB Notification: Performance of matching and sorting (n=41): time 0.004488/0.8545, allocations: 1.832 MB / 1.084 GB, free: 8.922 MB / 0.7325 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.587e-05/0.8545, allocations: 57.38 kB / 1.084 GB, free: 8.855 MB / 0.7325 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0008353/0.8554, allocations: 0.7812 MB / 1.084 GB, free: 8.418 MB / 0.7325 GB Notification: Performance of collectPreVariables (initialization): time 6.191e-05/0.8554, allocations: 34.77 kB / 1.084 GB, free: 8.383 MB / 0.7325 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003319/0.8558, allocations: 463.4 kB / 1.085 GB, free: 7.98 MB / 0.7325 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001392/0.8559, allocations: 150.1 kB / 1.085 GB, free: 7.855 MB / 0.7325 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000188/0.8561, allocations: 111 kB / 1.085 GB, free: 7.785 MB / 0.7325 GB Notification: Performance of setup shared object (initialization): time 0.0001368/0.8562, allocations: 334.9 kB / 1.085 GB, free: 7.461 MB / 0.7325 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0007227/0.8569, allocations: 309.6 kB / 1.086 GB, free: 7.312 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.000827/0.8578, allocations: 446.6 kB / 1.086 GB, free: 7.008 MB / 0.7325 GB Warning: It was not possible to determine if the initialization problem is consistent, because of not evaluable parameters/start values during compile time: volDyn.dynBal.medium.p = volDyn.dynBal.p_start (bou.p = volDyn.dynBal.p_start) Notification: Performance of analyzeInitialSystem (initialization): time 0.004845/0.8626, allocations: 1.855 MB / 1.088 GB, free: 6.066 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.465e-06/0.8626, allocations: 2.188 kB / 1.088 GB, free: 6.066 MB / 0.7325 GB Notification: Performance of matching and sorting (n=65) (initialization): time 0.001761/0.8644, allocations: 0.8442 MB / 1.089 GB, free: 5.656 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 1.612e-05/0.8644, allocations: 7.5 kB / 1.089 GB, free: 5.656 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.075e-06/0.8644, allocations: 10 kB / 1.089 GB, free: 5.652 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.575e-05/0.8644, allocations: 3.406 kB / 1.089 GB, free: 5.652 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000741/0.8652, allocations: 163.3 kB / 1.089 GB, free: 5.617 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.167e-05/0.8652, allocations: 14.05 kB / 1.089 GB, free: 5.609 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007753/0.8659, allocations: 53.23 kB / 1.089 GB, free: 5.586 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.097e-05/0.866, allocations: 27.27 kB / 1.089 GB, free: 5.578 MB / 0.7325 GB Warning: The initial conditions are over specified. The following 1 initial equations are redundant, so they are removed from the initialization system: volDyn.dynBal.medium.p = volDyn.dynBal.p_start. Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 14 * 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 (65): * Single equations (assignments): 65 * 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 0.0003799/0.8664, allocations: 280.5 kB / 1.089 GB, free: 5.371 MB / 0.7325 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001426/0.8665, allocations: 90.09 kB / 1.089 GB, free: 5.324 MB / 0.7325 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.00018/0.8667, allocations: 97.17 kB / 1.089 GB, free: 5.254 MB / 0.7325 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.477e-06/0.8667, allocations: 3.375 kB / 1.089 GB, free: 5.254 MB / 0.7325 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.053e-06/0.8667, allocations: 0 / 1.089 GB, free: 5.254 MB / 0.7325 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.00146/0.8682, allocations: 0.6933 MB / 1.09 GB, free: 4.828 MB / 0.7325 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003697/0.8719, allocations: 1.886 MB / 1.092 GB, free: 3.582 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.378e-06/0.8719, allocations: 1.812 kB / 1.092 GB, free: 3.582 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006894/0.8726, allocations: 145.2 kB / 1.092 GB, free: 3.543 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (simulation): time 5.721e-06/0.8726, allocations: 3.469 kB / 1.092 GB, free: 3.543 MB / 0.7325 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.663e-05/0.8726, allocations: 16.47 kB / 1.092 GB, free: 3.535 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 7.725e-06/0.8726, allocations: 14.7 kB / 1.092 GB, free: 3.527 MB / 0.7325 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.927e-06/0.8726, allocations: 4.312 kB / 1.092 GB, free: 3.527 MB / 0.7325 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002474/0.8751, allocations: 1.228 MB / 1.093 GB, free: 2.621 MB / 0.7325 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0003668/0.8755, allocations: 159.4 kB / 1.093 GB, free: 2.465 MB / 0.7325 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001157/0.8756, allocations: 19.98 kB / 1.094 GB, free: 2.445 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0007594/0.8763, allocations: 55.3 kB / 1.094 GB, free: 2.395 MB / 0.7325 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.292e-05/0.8764, allocations: 38.97 kB / 1.094 GB, free: 2.359 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.717e-05/0.8765, allocations: 31.98 kB / 1.094 GB, free: 2.328 MB / 0.7325 GB Notification: Performance of sorting global known variables: time 0.0006733/0.8771, allocations: 0.538 MB / 1.094 GB, free: 1.797 MB / 0.7325 GB Notification: Performance of sort global known variables: time 1.2e-07/0.8771, allocations: 4 kB / 1.094 GB, free: 1.793 MB / 0.7325 GB Notification: Performance of remove unused functions: time 0.0007374/0.8779, allocations: 247.9 kB / 1.094 GB, free: 1.551 MB / 0.7325 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 14 * Number of states: 2 (volDyn.dynBal.medium.Xi[1],volDyn.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 (41): * Single equations (assignments): 41 * 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 Backend phase and start with SimCode phase: time 0.003053/0.8809, allocations: 1.86 MB / 1.096 GB, free: 15.64 MB / 0.7481 GB Notification: Performance of simCode: created initialization part: time 0.001665/0.8826, allocations: 0.6661 MB / 1.097 GB, free: 15 MB / 0.7481 GB Notification: Performance of simCode: created event and clocks part: time 5.17e-06/0.8826, allocations: 4 kB / 1.097 GB, free: 14.99 MB / 0.7481 GB Notification: Performance of simCode: created simulation system equations: time 0.000781/0.8834, allocations: 325.8 kB / 1.097 GB, free: 14.69 MB / 0.7481 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002259/0.8856, allocations: 0.5246 MB / 1.098 GB, free: 14.17 MB / 0.7481 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01216/0.8978, allocations: 7.207 MB / 1.105 GB, free: 6.715 MB / 0.7481 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006699/0.8985, allocations: 1.044 MB / 1.106 GB, free: 5.645 MB / 0.7481 GB Notification: Performance of simCode: alias equations: time 0.0007307/0.8992, allocations: 223.1 kB / 1.106 GB, free: 5.422 MB / 0.7481 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004855/0.8997, allocations: 327.3 kB / 1.106 GB, free: 5.102 MB / 0.7481 GB Notification: Performance of SimCode: time 7.71e-07/0.8997, allocations: 0 / 1.106 GB, free: 5.102 MB / 0.7481 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.05655/0.9562, allocations: 26.24 MB / 1.132 GB, free: 11.36 MB / 0.7794 GB Notification: Performance of buildModelFMU: Generate platform static: time 11.79/12.74, allocations: 23.31 kB / 1.132 GB, free: 11.34 MB / 0.7794 GB " [Timeout remaining time 647] (rm -f BuildingSystems_BuildingSystems.Fluid.MixingVolumes.Validation.MixingVolumeMoistureReverseFlowPrescribedHeatFlowRate.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.MixingVolumes.Validation.MixingVolumeMoistureReverseFlowPrescribedHeatFlowRate.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.MixingVolumes.Validation.MixingVolumeMoistureReverseFlowPrescribedHeatFlowRate.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.MixingVolumes.Validation.MixingVolumeMoistureReverseFlowPrescribedHeatFlowRate.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_BuildingSystems_BuildingSystems_Fluid_MixingVolumes_Validation_MixingVolumeMoistureReverseFlowPrescribedHeatFlowRate_fmu --startTime=0 --stopTime=10 --stepSize=0.004 --timeout=50 --tolerance=1e-06 BuildingSystems_BuildingSystems_Fluid_MixingVolumes_Validation_MixingVolumeMoistureReverseFlowPrescribedHeatFlowRate.fmu > BuildingSystems_BuildingSystems.Fluid.MixingVolumes.Validation.MixingVolumeMoistureReverseFlowPrescribedHeatFlowRate.pipe 2>&1) [Timeout 52.5] [Calling sys.exit(0), Time elapsed: 16.85455428098794] Failed to read output from testmodel.py, exit status != 0: 12.908135970996227 12.923692064 12.088744687 Calling exit ...