Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_12_Buildings.Fluid.Movers.BaseClasses.Validation.EulerReducedSpeed.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 0.001404/0.001404, 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 0.001542/0.001542, allocations: 217.5 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 1.321/1.321, allocations: 230.6 MB / 256.8 MB, free: 7.977 MB / 206.1 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.1-maint.12.x/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.1-maint.12.x/package.mo): time 2.84/2.84, allocations: 0.49 GB / 0.7959 GB, free: 33.4 MB / 0.6231 GB " [Timeout remaining time 177] Using package Buildings with version 12.1.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.1-maint.12.x/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(Buildings.Fluid.Movers.BaseClasses.Validation.EulerReducedSpeed,fileNamePrefix="Buildings_12_Buildings_Fluid_Movers_BaseClasses_Validation_EulerReducedSpeed",fmuType="cs",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.Movers.BaseClasses.Validation.EulerReducedSpeed,fileNamePrefix="Buildings_12_Buildings_Fluid_Movers_BaseClasses_Validation_EulerReducedSpeed",fmuType="cs",version="2.0",platforms={"static"}) [Timeout 300] "Notification: Buildings 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 0.00179/0.00179, allocations: 70.33 kB / 1.155 GB, free: 25.7 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2597/0.2614, allocations: 176.1 MB / 1.327 GB, free: 1.953 MB / 1.014 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Movers.BaseClasses.Validation.EulerReducedSpeed): time 0.00598/0.2674, allocations: 4.968 MB / 1.332 GB, free: 12.96 MB / 1.029 GB Notification: Performance of NFInst.instExpressions: time 0.008526/0.2759, allocations: 5.704 MB / 1.337 GB, free: 7.242 MB / 1.029 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0004145/0.2764, allocations: 31.81 kB / 1.337 GB, free: 7.211 MB / 1.029 GB Notification: Performance of NFTyping.typeComponents: time 0.003372/0.2797, allocations: 1.605 MB / 1.339 GB, free: 5.602 MB / 1.029 GB Notification: Performance of NFTyping.typeBindings: time 0.001931/0.2817, allocations: 1.176 MB / 1.34 GB, free: 4.422 MB / 1.029 GB Notification: Performance of NFTyping.typeClassSections: time 0.002112/0.2838, allocations: 1.218 MB / 1.341 GB, free: 3.203 MB / 1.029 GB Notification: Performance of NFFlatten.flatten: time 0.01961/0.3034, allocations: 14.15 MB / 1.355 GB, free: 5.039 MB / 1.045 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0002886/0.3037, allocations: 89.5 kB / 1.355 GB, free: 4.938 MB / 1.045 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001431/0.3051, allocations: 0.9072 MB / 1.356 GB, free: 4.027 MB / 1.045 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001397/0.3065, allocations: 0.9378 MB / 1.357 GB, free: 3.086 MB / 1.045 GB Notification: Performance of NFPackage.collectConstants: time 0.0002504/0.3068, allocations: 96 kB / 1.357 GB, free: 2.992 MB / 1.045 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002641/0.3094, allocations: 1.661 MB / 1.358 GB, free: 1.328 MB / 1.045 GB Notification: Performance of NFScalarize.scalarize: time 0.0009858/0.3104, allocations: 1.172 MB / 1.36 GB, free: 156 kB / 1.045 GB Notification: Performance of NFVerifyModel.verify: time 0.001199/0.3116, allocations: 1.255 MB / 1.361 GB, free: 14.89 MB / 1.061 GB Notification: Performance of NFConvertDAE.convert: time 0.004117/0.3157, allocations: 4.051 MB / 1.365 GB, free: 10.82 MB / 1.061 GB Notification: Performance of FrontEnd - DAE generated: time 3.086e-06/0.3157, allocations: 0 / 1.365 GB, free: 10.82 MB / 1.061 GB Notification: Performance of FrontEnd: time 1.382e-06/0.3157, allocations: 0 / 1.365 GB, free: 10.82 MB / 1.061 GB Notification: Performance of Transformations before backend: time 2.816e-05/0.3157, allocations: 0 / 1.365 GB, free: 10.82 MB / 1.061 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 64 * Number of variables: 64 Notification: Performance of Generate backend data structure: time 0.005207/0.3209, allocations: 3.103 MB / 1.368 GB, free: 7.668 MB / 1.061 GB Notification: Performance of prepare preOptimizeDAE: time 4.435e-05/0.321, allocations: 8.031 kB / 1.368 GB, free: 7.66 MB / 1.061 GB Notification: Performance of preOpt introduceOutputRealDerivatives (simulation): time 1.791e-05/0.321, allocations: 8.656 kB / 1.368 GB, free: 7.652 MB / 1.061 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 6.819e-05/0.3211, allocations: 66.47 kB / 1.368 GB, free: 7.578 MB / 1.061 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.00353/0.3246, allocations: 0.728 MB / 1.369 GB, free: 6.848 MB / 1.061 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.006756/0.3314, allocations: 4.308 MB / 1.373 GB, free: 2.492 MB / 1.061 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.085e-05/0.3314, allocations: 28.66 kB / 1.373 GB, free: 2.465 MB / 1.061 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001146/0.3315, allocations: 48 kB / 1.373 GB, free: 2.418 MB / 1.061 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001743/0.3332, allocations: 1.009 MB / 1.374 GB, free: 1.402 MB / 1.061 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.384e-05/0.3333, allocations: 0 / 1.374 GB, free: 1.402 MB / 1.061 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.222e-05/0.3333, allocations: 15.94 kB / 1.374 GB, free: 1.387 MB / 1.061 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.183e-06/0.3333, allocations: 4 kB / 1.374 GB, free: 1.383 MB / 1.061 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.00203/0.3354, allocations: 0.8535 MB / 1.375 GB, free: 0.5273 MB / 1.061 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.004899/0.3403, allocations: 3.237 MB / 1.378 GB, free: 13.23 MB / 1.076 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002186/0.3424, allocations: 1.134 MB / 1.379 GB, free: 12.09 MB / 1.076 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0009962/0.3434, allocations: 453.1 kB / 1.379 GB, free: 11.65 MB / 1.076 GB Notification: Performance of preOpt evalFunc (simulation): time 6.055e-05/0.3435, allocations: 20.2 kB / 1.379 GB, free: 11.63 MB / 1.076 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.626e-05/0.3435, allocations: 34.84 kB / 1.379 GB, free: 11.59 MB / 1.076 GB Notification: Performance of pre-optimization done (n=33): time 3.146e-06/0.3435, allocations: 3.984 kB / 1.379 GB, free: 11.58 MB / 1.076 GB Notification: Performance of matching and sorting (n=33): time 0.003706/0.3472, allocations: 1.657 MB / 1.381 GB, free: 9.918 MB / 1.076 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.028e-05/0.3473, allocations: 59.34 kB / 1.381 GB, free: 9.848 MB / 1.076 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.004759/0.352, allocations: 3.81 MB / 1.385 GB, free: 6.043 MB / 1.076 GB Notification: Performance of collectPreVariables (initialization): time 9.753e-05/0.3521, allocations: 41.7 kB / 1.385 GB, free: 5.996 MB / 1.076 GB Notification: Performance of collectInitialEqns (initialization): time 0.0009226/0.3531, allocations: 1.009 MB / 1.386 GB, free: 4.98 MB / 1.076 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001425/0.3532, allocations: 127 kB / 1.386 GB, free: 4.855 MB / 1.076 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0006759/0.3539, allocations: 0.5276 MB / 1.387 GB, free: 4.32 MB / 1.076 GB Notification: Performance of setup shared object (initialization): time 0.0001079/0.354, allocations: 305.1 kB / 1.387 GB, free: 4.02 MB / 1.076 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.00257/0.3565, allocations: 1.857 MB / 1.389 GB, free: 2.16 MB / 1.076 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.003036/0.3596, allocations: 2.398 MB / 1.391 GB, free: 15.59 MB / 1.092 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.005152/0.3647, allocations: 3.93 MB / 1.395 GB, free: 11.5 MB / 1.092 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.477e-05/0.3648, allocations: 7.938 kB / 1.395 GB, free: 11.5 MB / 1.092 GB Notification: Performance of matching and sorting (n=305) (initialization): time 0.006688/0.3714, allocations: 4.57 MB / 1.399 GB, free: 6.918 MB / 1.092 GB Notification: Performance of prepare postOptimizeDAE: time 2.189e-05/0.3715, allocations: 8 kB / 1.399 GB, free: 6.91 MB / 1.092 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.827e-05/0.3715, allocations: 15.98 kB / 1.399 GB, free: 6.895 MB / 1.092 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.013e-05/0.3715, allocations: 20 kB / 1.399 GB, free: 6.875 MB / 1.092 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001457/0.373, allocations: 387.6 kB / 1.4 GB, free: 6.496 MB / 1.092 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 4.276e-05/0.373, allocations: 27.92 kB / 1.4 GB, free: 6.469 MB / 1.092 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001899/0.3749, allocations: 262.3 kB / 1.4 GB, free: 6.211 MB / 1.092 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001884/0.3751, allocations: 115.9 kB / 1.4 GB, free: 6.098 MB / 1.092 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.003176/0.3783, allocations: 2.195 MB / 1.402 GB, free: 3.898 MB / 1.092 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.002689/0.381, allocations: 2.1 MB / 1.404 GB, free: 1.629 MB / 1.092 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.004567/0.3855, allocations: 3.338 MB / 1.408 GB, free: 14.14 MB / 1.107 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 8.125e-06/0.3855, allocations: 4 kB / 1.408 GB, free: 14.13 MB / 1.107 GB Notification: Performance of matching and sorting (n=305) (initialization_lambda0): time 0.005932/0.3915, allocations: 3.966 MB / 1.411 GB, free: 10.16 MB / 1.107 GB Notification: Performance of prepare postOptimizeDAE: time 1.773e-05/0.3915, allocations: 12 kB / 1.411 GB, free: 10.14 MB / 1.107 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.395e-05/0.3915, allocations: 12 kB / 1.411 GB, free: 10.13 MB / 1.107 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.848e-05/0.3915, allocations: 20.09 kB / 1.411 GB, free: 10.11 MB / 1.107 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001378/0.3929, allocations: 383.4 kB / 1.412 GB, free: 9.738 MB / 1.107 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 3.057e-05/0.3929, allocations: 27.92 kB / 1.412 GB, free: 9.711 MB / 1.107 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001824/0.3948, allocations: 219 kB / 1.412 GB, free: 9.496 MB / 1.107 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001477/0.3949, allocations: 99.91 kB / 1.412 GB, free: 9.398 MB / 1.107 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 49 * Number of states: 0 () * Number of discrete variables: 1 (per3.haveWMot_nominal) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (189): * Single equations (assignments): 182 * Array equations: 3 * Algorithm blocks: 0 * Record equations: 4 * 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 0.0003338/0.3952, allocations: 263.8 kB / 1.412 GB, free: 9.133 MB / 1.107 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003708/0.3956, allocations: 274 kB / 1.413 GB, free: 8.863 MB / 1.107 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002738/0.3983, allocations: 1.24 MB / 1.414 GB, free: 7.617 MB / 1.107 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.522e-06/0.3983, allocations: 4 kB / 1.414 GB, free: 7.613 MB / 1.107 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.807e-06/0.3984, allocations: 0 / 1.414 GB, free: 7.613 MB / 1.107 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.442e-06/0.3984, allocations: 0 / 1.414 GB, free: 7.613 MB / 1.107 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.00172/0.4001, allocations: 1.497 MB / 1.415 GB, free: 6.074 MB / 1.107 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.884e-06/0.4001, allocations: 4 kB / 1.415 GB, free: 6.07 MB / 1.107 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006997/0.4008, allocations: 123.8 kB / 1.415 GB, free: 5.949 MB / 1.107 GB Notification: Performance of postOpt tearingSystem (simulation): time 4.688e-06/0.4008, allocations: 8 kB / 1.415 GB, free: 5.941 MB / 1.107 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.888e-05/0.4008, allocations: 11.98 kB / 1.415 GB, free: 5.93 MB / 1.107 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 7.043e-06/0.4008, allocations: 0 / 1.415 GB, free: 5.93 MB / 1.107 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.382e-06/0.4008, allocations: 7.938 kB / 1.415 GB, free: 5.922 MB / 1.107 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002426/0.4033, allocations: 1.329 MB / 1.417 GB, free: 4.574 MB / 1.107 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0008169/0.4041, allocations: 429.8 kB / 1.417 GB, free: 4.152 MB / 1.107 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002885/0.4044, allocations: 7.984 kB / 1.417 GB, free: 4.145 MB / 1.107 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001008/0.4054, allocations: 71.92 kB / 1.417 GB, free: 4.074 MB / 1.107 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.604e-05/0.4055, allocations: 27.95 kB / 1.417 GB, free: 4.047 MB / 1.107 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.013e-05/0.4055, allocations: 19.98 kB / 1.417 GB, free: 4.027 MB / 1.107 GB Notification: Performance of sorting global known variables: time 0.003343/0.4088, allocations: 2.571 MB / 1.42 GB, free: 1.469 MB / 1.107 GB Notification: Performance of sort global known variables: time 1.3e-07/0.4088, allocations: 0 / 1.42 GB, free: 1.469 MB / 1.107 GB Notification: Performance of remove unused functions: time 0.002338/0.4112, allocations: 1.031 MB / 1.421 GB, free: 448 kB / 1.107 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 (36): * Single equations (assignments): 36 * 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 0.003611/0.4148, allocations: 2.236 MB / 1.423 GB, free: 14.17 MB / 1.123 GB Notification: Performance of simCode: created initialization part: time 0.006385/0.4212, allocations: 4.249 MB / 1.427 GB, free: 9.922 MB / 1.123 GB Notification: Performance of simCode: created event and clocks part: time 2.124e-06/0.4212, allocations: 0 / 1.427 GB, free: 9.922 MB / 1.123 GB Notification: Performance of simCode: created simulation system equations: time 0.001013/0.4222, allocations: 477.2 kB / 1.428 GB, free: 9.457 MB / 1.123 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00393/0.4261, allocations: 1.314 MB / 1.429 GB, free: 8.16 MB / 1.123 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.03733/0.4635, allocations: 27.4 MB / 1.456 GB, free: 12.28 MB / 1.154 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001478/0.4649, allocations: 1.785 MB / 1.457 GB, free: 10.46 MB / 1.154 GB Notification: Performance of simCode: alias equations: time 0.002352/0.4673, allocations: 0.7863 MB / 1.458 GB, free: 9.672 MB / 1.154 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001371/0.4687, allocations: 1.038 MB / 1.459 GB, free: 8.633 MB / 1.154 GB Notification: Performance of SimCode: time 6.51e-07/0.4687, allocations: 0 / 1.459 GB, free: 8.633 MB / 1.154 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.1433/0.612, allocations: 80.34 MB / 1.538 GB, free: 9.426 MB / 1.232 GB Notification: Performance of buildModelFMU: Generate platform static: time 16.41/17.02, allocations: 11.98 kB / 1.538 GB, free: 9.414 MB / 1.232 GB " [Timeout remaining time 283] (rm -f Buildings_12_Buildings.Fluid.Movers.BaseClasses.Validation.EulerReducedSpeed.pipe ; mkfifo Buildings_12_Buildings.Fluid.Movers.BaseClasses.Validation.EulerReducedSpeed.pipe ; head -c 1048576 < Buildings_12_Buildings.Fluid.Movers.BaseClasses.Validation.EulerReducedSpeed.pipe >> ../files/Buildings_12_Buildings.Fluid.Movers.BaseClasses.Validation.EulerReducedSpeed.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_12_Buildings.Fluid.Movers.BaseClasses.Validation.EulerReducedSpeed_res.mat --tempDir=temp_Buildings_12_Buildings_Fluid_Movers_BaseClasses_Validation_EulerReducedSpeed_fmu --startTime=0 --stopTime=1 --stepSize=0.0004 --timeout=400 --tolerance=1e-06 Buildings_12_Buildings_Fluid_Movers_BaseClasses_Validation_EulerReducedSpeed.fmu > Buildings_12_Buildings.Fluid.Movers.BaseClasses.Validation.EulerReducedSpeed.pipe 2>&1) [Timeout 420.0] [Calling os._exit(0), Time elapsed: 22.913476668996736] Failed to read output from testmodel.py, exit status != 0: 17.221557400014717 17.236185389 16.917682354 Calling exit ...