Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_12_Buildings.Fluid.DXSystems.BaseClasses.Examples.DryCoil.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 0.001355/0.001355, allocations: 97.31 kB / 19.73 MB, free: 2.117 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 0.001532/0.001532, allocations: 217.9 kB / 23.03 MB, free: 4.922 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 1.441/1.441, allocations: 230.6 MB / 256.8 MB, free: 7.797 MB / 206.1 MB " [Timeout remaining time 178] 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 3.23/3.23, allocations: 0.49 GB / 0.7959 GB, free: 35.52 MB / 0.6231 GB " [Timeout remaining time 176] 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.DXSystems.BaseClasses.Examples.DryCoil,fileNamePrefix="Buildings_12_Buildings_Fluid_DXSystems_BaseClasses_Examples_DryCoil",fmuType="cs",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.DXSystems.BaseClasses.Examples.DryCoil,fileNamePrefix="Buildings_12_Buildings_Fluid_DXSystems_BaseClasses_Examples_DryCoil",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 0.002127/0.002127, allocations: 71.38 kB / 1.155 GB, free: 25.4 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3752/0.3773, allocations: 176.1 MB / 1.327 GB, free: 1.469 MB / 1.014 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.DXSystems.BaseClasses.Examples.DryCoil): time 0.005402/0.3827, allocations: 2.864 MB / 1.329 GB, free: 14.59 MB / 1.029 GB Notification: Performance of NFInst.instExpressions: time 0.005405/0.3881, allocations: 3.075 MB / 1.332 GB, free: 11.51 MB / 1.029 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0003607/0.3885, allocations: 7.938 kB / 1.332 GB, free: 11.5 MB / 1.029 GB Notification: Performance of NFTyping.typeComponents: time 0.001635/0.3901, allocations: 0.5131 MB / 1.333 GB, free: 10.98 MB / 1.029 GB Notification: Performance of NFTyping.typeBindings: time 0.0004303/0.3905, allocations: 134.9 kB / 1.333 GB, free: 10.85 MB / 1.029 GB Notification: Performance of NFTyping.typeClassSections: time 0.002206/0.3927, allocations: 0.7236 MB / 1.334 GB, free: 10.14 MB / 1.029 GB Notification: Performance of NFFlatten.flatten: time 0.002236/0.395, allocations: 1.681 MB / 1.335 GB, free: 8.453 MB / 1.029 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0004373/0.3954, allocations: 117.8 kB / 1.335 GB, free: 8.32 MB / 1.029 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0009757/0.3964, allocations: 0.5919 MB / 1.336 GB, free: 7.727 MB / 1.029 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001323/0.3977, allocations: 0.6305 MB / 1.337 GB, free: 7.094 MB / 1.029 GB Notification: Performance of NFPackage.collectConstants: time 0.0004434/0.3982, allocations: 136 kB / 1.337 GB, free: 6.961 MB / 1.029 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001639/0.3998, allocations: 0.7101 MB / 1.338 GB, free: 6.25 MB / 1.029 GB Notification: Performance of NFScalarize.scalarize: time 0.000918/0.4007, allocations: 0.6272 MB / 1.338 GB, free: 5.621 MB / 1.029 GB Notification: Performance of NFVerifyModel.verify: time 0.001391/0.4021, allocations: 0.6646 MB / 1.339 GB, free: 4.953 MB / 1.029 GB Notification: Performance of NFConvertDAE.convert: time 0.004767/0.4069, allocations: 3.45 MB / 1.342 GB, free: 1.492 MB / 1.029 GB Notification: Performance of FrontEnd - DAE generated: time 1.687e-05/0.4069, allocations: 7.984 kB / 1.342 GB, free: 1.484 MB / 1.029 GB Notification: Performance of FrontEnd: time 1.934e-06/0.4069, allocations: 0 / 1.342 GB, free: 1.484 MB / 1.029 GB Notification: Performance of Transformations before backend: time 7.562e-05/0.407, allocations: 0 / 1.342 GB, free: 1.484 MB / 1.029 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 76 * Number of variables: 76 Notification: Performance of Generate backend data structure: time 0.00573/0.4127, allocations: 2.158 MB / 1.344 GB, free: 15.27 MB / 1.045 GB Notification: Performance of prepare preOptimizeDAE: time 5.79e-05/0.4128, allocations: 16.02 kB / 1.344 GB, free: 15.25 MB / 1.045 GB Notification: Performance of preOpt introduceOutputRealDerivatives (simulation): time 2.983e-05/0.4128, allocations: 8.188 kB / 1.344 GB, free: 15.25 MB / 1.045 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001422/0.4129, allocations: 74.72 kB / 1.344 GB, free: 15.16 MB / 1.045 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.006661/0.4196, allocations: 0.6553 MB / 1.345 GB, free: 14.51 MB / 1.045 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004338/0.4239, allocations: 1.61 MB / 1.347 GB, free: 12.84 MB / 1.045 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0004108/0.4243, allocations: 196 kB / 1.347 GB, free: 12.62 MB / 1.045 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001339/0.4245, allocations: 36.12 kB / 1.347 GB, free: 12.59 MB / 1.045 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.004151/0.4286, allocations: 1.916 MB / 1.349 GB, free: 10.66 MB / 1.045 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.421e-05/0.4286, allocations: 4 kB / 1.349 GB, free: 10.65 MB / 1.045 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001218/0.4288, allocations: 15.98 kB / 1.349 GB, free: 10.64 MB / 1.045 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.184e-05/0.4288, allocations: 8 kB / 1.349 GB, free: 10.63 MB / 1.045 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.005797/0.4346, allocations: 2.643 MB / 1.351 GB, free: 7.98 MB / 1.045 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.01039/0.445, allocations: 4.16 MB / 1.355 GB, free: 3.762 MB / 1.045 GB Notification: Performance of preOpt comSubExp (simulation): time 0.01057/0.4555, allocations: 2.872 MB / 1.358 GB, free: 0.8711 MB / 1.045 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.002706/0.4582, allocations: 1.175 MB / 1.359 GB, free: 15.69 MB / 1.061 GB Notification: Performance of preOpt evalFunc (simulation): time 7.991e-05/0.4583, allocations: 20.44 kB / 1.359 GB, free: 15.67 MB / 1.061 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.00356/0.4619, allocations: 1.813 MB / 1.361 GB, free: 13.83 MB / 1.061 GB Notification: Performance of pre-optimization done (n=61): time 4.028e-06/0.4619, allocations: 0 / 1.361 GB, free: 13.83 MB / 1.061 GB Notification: Performance of matching and sorting (n=61): time 0.008954/0.4708, allocations: 3.706 MB / 1.365 GB, free: 10.1 MB / 1.061 GB Notification: Performance of inlineWhenForInitialization (initialization): time 9.969e-05/0.4709, allocations: 97.59 kB / 1.365 GB, free: 9.988 MB / 1.061 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.004845/0.4758, allocations: 2.759 MB / 1.367 GB, free: 7.184 MB / 1.061 GB Notification: Performance of collectPreVariables (initialization): time 0.0004074/0.4762, allocations: 49.69 kB / 1.368 GB, free: 7.129 MB / 1.061 GB Notification: Performance of collectInitialEqns (initialization): time 0.000846/0.477, allocations: 0.701 MB / 1.368 GB, free: 6.422 MB / 1.061 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003884/0.4774, allocations: 202.3 kB / 1.368 GB, free: 6.223 MB / 1.061 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004292/0.4778, allocations: 150.1 kB / 1.369 GB, free: 6.066 MB / 1.061 GB Notification: Performance of setup shared object (initialization): time 0.000172/0.478, allocations: 337.9 kB / 1.369 GB, free: 5.73 MB / 1.061 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002954/0.481, allocations: 1.536 MB / 1.37 GB, free: 4.18 MB / 1.061 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002905/0.4839, allocations: 1.515 MB / 1.372 GB, free: 2.652 MB / 1.061 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.004909/0.4888, allocations: 2.231 MB / 1.374 GB, free: 408 kB / 1.061 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.513e-06/0.4888, allocations: 0 / 1.374 GB, free: 408 kB / 1.061 GB Notification: Performance of matching and sorting (n=70) (initialization): time 0.006697/0.4955, allocations: 3.083 MB / 1.377 GB, free: 13.28 MB / 1.076 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001011/0.4956, allocations: 87.38 kB / 1.377 GB, free: 13.18 MB / 1.076 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.708e-06/0.4956, allocations: 0 / 1.377 GB, free: 13.18 MB / 1.076 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.805e-05/0.4956, allocations: 0 / 1.377 GB, free: 13.18 MB / 1.076 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001399/0.497, allocations: 191.6 kB / 1.377 GB, free: 13 MB / 1.076 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.25e-05/0.497, allocations: 0 / 1.377 GB, free: 13 MB / 1.076 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00169/0.4987, allocations: 111.6 kB / 1.377 GB, free: 12.89 MB / 1.076 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001613/0.4989, allocations: 51.94 kB / 1.377 GB, free: 12.84 MB / 1.076 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 32 (speRat.nextEventScaled,speRat.nextEvent,$PRE.speRat.nextEvent,speRat.last,speRat.b,speRat.a,dryCoi.coiCap.checkBoundsTCon[4],$PRE.dryCoi.coiCap.checkBoundsTCon[4],dryCoi.coiCap.checkBoundsTCon[3],$PRE.dryCoi.coiCap.checkBoundsTCon[3],dryCoi.coiCap.checkBoundsTCon[2],$PRE.dryCoi.coiCap.checkBoundsTCon[2],dryCoi.coiCap.checkBoundsTCon[1],$PRE.dryCoi.coiCap.checkBoundsTCon[1],dryCoi.coiCap.checkBoundsTEva[4],$PRE.dryCoi.coiCap.checkBoundsTEva[4],dryCoi.coiCap.checkBoundsTEva[3],$PRE.dryCoi.coiCap.checkBoundsTEva[3],dryCoi.coiCap.checkBoundsTEva[2],$PRE.dryCoi.coiCap.checkBoundsTEva[2],dryCoi.coiCap.checkBoundsTEva[1],$PRE.dryCoi.coiCap.checkBoundsTEva[1],dryCoi.coiCap.stage,$whenCondition9,$whenCondition1,$whenCondition2,$whenCondition3,$whenCondition4,$whenCondition5,$whenCondition6,$whenCondition7,$whenCondition8) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (58): * Single equations (assignments): 56 * 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 0.001397/0.5003, allocations: 0.7777 MB / 1.378 GB, free: 12.05 MB / 1.076 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0005499/0.5008, allocations: 182.8 kB / 1.378 GB, free: 11.87 MB / 1.076 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.005974/0.5068, allocations: 2.7 MB / 1.381 GB, free: 9.133 MB / 1.076 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.867e-06/0.5068, allocations: 4 kB / 1.381 GB, free: 9.129 MB / 1.076 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.091e-06/0.5068, allocations: 0 / 1.381 GB, free: 9.129 MB / 1.076 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.055e-05/0.5068, allocations: 11.92 kB / 1.381 GB, free: 9.117 MB / 1.076 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003099/0.5099, allocations: 1.924 MB / 1.383 GB, free: 7.145 MB / 1.076 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.202e-06/0.5099, allocations: 4 kB / 1.383 GB, free: 7.141 MB / 1.076 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001344/0.5113, allocations: 179.7 kB / 1.383 GB, free: 6.965 MB / 1.076 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.577e-05/0.5113, allocations: 7.969 kB / 1.383 GB, free: 6.957 MB / 1.076 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001348/0.5114, allocations: 39.94 kB / 1.383 GB, free: 6.918 MB / 1.076 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 5.73e-06/0.5114, allocations: 0 / 1.383 GB, free: 6.918 MB / 1.076 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.783e-06/0.5114, allocations: 0 / 1.383 GB, free: 6.918 MB / 1.076 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.006381/0.5178, allocations: 2.607 MB / 1.386 GB, free: 4.277 MB / 1.076 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001724/0.5195, allocations: 0.5296 MB / 1.386 GB, free: 3.746 MB / 1.076 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0007266/0.5203, allocations: 55.97 kB / 1.386 GB, free: 3.691 MB / 1.076 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001846/0.5221, allocations: 123.8 kB / 1.386 GB, free: 3.57 MB / 1.076 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001986/0.5223, allocations: 60.34 kB / 1.386 GB, free: 3.508 MB / 1.076 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001808/0.5225, allocations: 51.88 kB / 1.386 GB, free: 3.457 MB / 1.076 GB Notification: Performance of sorting global known variables: time 0.003695/0.5262, allocations: 1.976 MB / 1.388 GB, free: 1.457 MB / 1.076 GB Notification: Performance of sort global known variables: time 8e-08/0.5262, allocations: 0 / 1.388 GB, free: 1.457 MB / 1.076 GB Notification: Performance of remove unused functions: time 0.001678/0.5279, allocations: 375.7 kB / 1.389 GB, free: 1.09 MB / 1.076 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 23 ($whenCondition8,$whenCondition7,$whenCondition6,$whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,$whenCondition9,dryCoi.coiCap.stage,dryCoi.coiCap.checkBoundsTEva[1],dryCoi.coiCap.checkBoundsTEva[2],dryCoi.coiCap.checkBoundsTEva[3],dryCoi.coiCap.checkBoundsTEva[4],dryCoi.coiCap.checkBoundsTCon[1],dryCoi.coiCap.checkBoundsTCon[2],dryCoi.coiCap.checkBoundsTCon[3],dryCoi.coiCap.checkBoundsTCon[4],speRat.a,speRat.b,speRat.last,speRat.nextEvent,speRat.nextEventScaled) * Number of discrete states: 9 (speRat.nextEvent,speRat.last,speRat.nextEventScaled,speRat.b,speRat.a,$whenCondition9,dryCoi.coiCap.stage,dryCoi.coiCap.checkBoundsTEva[dryCoi.coiCap.stage],dryCoi.coiCap.checkBoundsTCon[dryCoi.coiCap.stage]) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (56): * Single equations (assignments): 47 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 8 * 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 0.00706/0.5349, allocations: 3.298 MB / 1.392 GB, free: 13.75 MB / 1.092 GB Notification: Performance of simCode: created initialization part: time 0.006189/0.5411, allocations: 2.989 MB / 1.395 GB, free: 10.72 MB / 1.092 GB Notification: Performance of simCode: created event and clocks part: time 5.01e-06/0.5411, allocations: 0 / 1.395 GB, free: 10.72 MB / 1.092 GB Notification: Performance of simCode: created simulation system equations: time 0.002754/0.5439, allocations: 1.327 MB / 1.396 GB, free: 9.375 MB / 1.092 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002284/0.5462, allocations: 481.4 kB / 1.397 GB, free: 8.906 MB / 1.092 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.05688/0.603, allocations: 28.87 MB / 1.425 GB, free: 11.73 MB / 1.123 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001623/0.6047, allocations: 1.008 MB / 1.426 GB, free: 10.68 MB / 1.123 GB Notification: Performance of simCode: alias equations: time 0.002191/0.6068, allocations: 0.5993 MB / 1.426 GB, free: 10.08 MB / 1.123 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001359/0.6082, allocations: 0.5812 MB / 1.427 GB, free: 9.5 MB / 1.123 GB Notification: Performance of SimCode: time 1.553e-06/0.6082, allocations: 4 kB / 1.427 GB, free: 9.496 MB / 1.123 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.108/0.7162, allocations: 54.38 MB / 1.48 GB, free: 3.691 MB / 1.17 GB Notification: Performance of buildModelFMU: Generate platform static: time 15.11/15.82, allocations: 12.58 kB / 1.48 GB, free: 3.684 MB / 1.17 GB " [Timeout remaining time 284] (rm -f Buildings_12_Buildings.Fluid.DXSystems.BaseClasses.Examples.DryCoil.pipe ; mkfifo Buildings_12_Buildings.Fluid.DXSystems.BaseClasses.Examples.DryCoil.pipe ; head -c 1048576 < Buildings_12_Buildings.Fluid.DXSystems.BaseClasses.Examples.DryCoil.pipe >> ../files/Buildings_12_Buildings.Fluid.DXSystems.BaseClasses.Examples.DryCoil.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_12_Buildings.Fluid.DXSystems.BaseClasses.Examples.DryCoil_res.mat --tempDir=temp_Buildings_12_Buildings_Fluid_DXSystems_BaseClasses_Examples_DryCoil_fmu --startTime=0 --stopTime=3600 --stepSize=1.44 --timeout=400 --tolerance=1e-06 Buildings_12_Buildings_Fluid_DXSystems_BaseClasses_Examples_DryCoil.fmu > Buildings_12_Buildings.Fluid.DXSystems.BaseClasses.Examples.DryCoil.pipe 2>&1) [Timeout 420.0] [Calling os._exit(0), Time elapsed: 22.726779344026] Failed to read output from testmodel.py, exit status != 0: 16.036829752032645 16.059398119 15.64918778 Calling exit ...