Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolume.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 0.0008241/0.0008241, allocations: 80.44 kB / 19.17 MB, free: 0.7422 MB / 13.93 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 0.001128/0.001128, allocations: 165.9 kB / 22.45 MB, free: 2.109 MB / 18.57 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 0.8988/0.8988, allocations: 177.1 MB / 202.8 MB, free: 5.73 MB / 186.7 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.2-maint.11.x/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.2-maint.11.x/package.mo): time 1.709/1.709, allocations: 359 MB / 0.6037 GB, free: 11.09 MB / 0.573 GB " [Timeout remaining time 178] Using package Buildings with version 11.1.2 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.2-maint.11.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.MixingVolumes.Validation.MixingVolume,fileNamePrefix="Buildings_11_Buildings_Fluid_MixingVolumes_Validation_MixingVolume",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.MixingVolumes.Validation.MixingVolume,fileNamePrefix="Buildings_11_Buildings_Fluid_MixingVolumes_Validation_MixingVolume",fmuType="me",version="2.0",platforms={"static"}) [Timeout 300] "Notification: Performance of FrontEnd - loaded program: time 1.693e-06/1.693e-06, allocations: 0 / 0.9505 GB, free: 3.473 MB / 0.9011 GB Notification: Performance of FrontEnd - Absyn->SCode: time 1.337e-05/1.506e-05, allocations: 2.281 kB / 0.9505 GB, free: 3.469 MB / 0.9011 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.MixingVolumes.Validation.MixingVolume): time 0.6486/0.6486, allocations: 214.9 MB / 1.16 GB, free: 1.793 MB / 0.9948 GB Notification: Performance of NFInst.instExpressions: time 0.02161/0.6702, allocations: 14.76 MB / 1.175 GB, free: 7.824 MB / 1.01 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003614/0.6738, allocations: 112.3 kB / 1.175 GB, free: 7.766 MB / 1.01 GB Notification: Performance of NFTyping.typeComponents: time 0.004153/0.678, allocations: 1.151 MB / 1.176 GB, free: 7.125 MB / 1.01 GB Notification: Performance of NFTyping.typeBindings: time 0.01047/0.6885, allocations: 4.073 MB / 1.18 GB, free: 4.895 MB / 1.01 GB Notification: Performance of NFTyping.typeClassSections: time 0.005131/0.6936, allocations: 1.958 MB / 1.182 GB, free: 3.883 MB / 1.01 GB Notification: Performance of NFFlatten.flatten: time 0.008177/0.7018, allocations: 5.396 MB / 1.187 GB, free: 1.379 MB / 1.01 GB Notification: Performance of NFFlatten.resolveConnections: time 0.00264/0.7044, allocations: 1.311 MB / 1.188 GB, free: 0.75 MB / 1.01 GB Notification: Performance of NFEvalConstants.evaluate: time 0.008276/0.7127, allocations: 3.379 MB / 1.192 GB, free: 15.27 MB / 1.026 GB Notification: Performance of NFSimplifyModel.simplify: time 0.003932/0.7166, allocations: 1.616 MB / 1.193 GB, free: 14.75 MB / 1.026 GB Notification: Performance of NFPackage.collectConstants: time 0.000533/0.7172, allocations: 176.4 kB / 1.193 GB, free: 14.75 MB / 1.026 GB Notification: Performance of NFFlatten.collectFunctions: time 0.00482/0.722, allocations: 2.272 MB / 1.196 GB, free: 13.93 MB / 1.026 GB Notification: Performance of NFScalarize.scalarize: time 0.0009794/0.723, allocations: 0.8369 MB / 1.197 GB, free: 13.54 MB / 1.026 GB Notification: Performance of NFVerifyModel.verify: time 0.001696/0.7247, allocations: 0.8153 MB / 1.197 GB, free: 13.21 MB / 1.026 GB Notification: Performance of NFConvertDAE.convert: time 0.005929/0.7306, allocations: 3.618 MB / 1.201 GB, free: 11.36 MB / 1.026 GB Notification: Performance of FrontEnd - DAE generated: time 5.741e-06/0.7306, allocations: 0 / 1.201 GB, free: 11.36 MB / 1.026 GB Notification: Performance of FrontEnd: time 1.943e-06/0.7306, allocations: 0 / 1.201 GB, free: 11.36 MB / 1.026 GB Notification: Performance of Transformations before backend: time 7.452e-05/0.7307, allocations: 6.531 kB / 1.201 GB, free: 11.36 MB / 1.026 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 363 * Number of variables: 363 Notification: Performance of Generate backend data structure: time 0.003966/0.7346, allocations: 2.494 MB / 1.203 GB, free: 9.562 MB / 1.026 GB Notification: Performance of prepare preOptimizeDAE: time 4.799e-05/0.7347, allocations: 14.44 kB / 1.203 GB, free: 9.559 MB / 1.026 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0002608/0.7349, allocations: 220.7 kB / 1.204 GB, free: 9.387 MB / 1.026 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001806/0.7368, allocations: 0.5143 MB / 1.204 GB, free: 9.148 MB / 1.026 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002017/0.7388, allocations: 1.307 MB / 1.205 GB, free: 8.215 MB / 1.026 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001578/0.7389, allocations: 230.1 kB / 1.206 GB, free: 8.035 MB / 1.026 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001758/0.7391, allocations: 150.1 kB / 1.206 GB, free: 7.984 MB / 1.026 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002488/0.7416, allocations: 2.092 MB / 1.208 GB, free: 6.477 MB / 1.026 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.066e-05/0.7416, allocations: 3.953 kB / 1.208 GB, free: 6.473 MB / 1.026 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.528e-05/0.7417, allocations: 68.12 kB / 1.208 GB, free: 6.422 MB / 1.026 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.97e-05/0.7418, allocations: 63.59 kB / 1.208 GB, free: 6.41 MB / 1.026 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001831/0.7436, allocations: 1.364 MB / 1.209 GB, free: 5.742 MB / 1.026 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 0.006518/0.7501, allocations: 5.434 MB / 1.214 GB, free: 1.754 MB / 1.026 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001106/0.7512, allocations: 0.8505 MB / 1.215 GB, free: 1.309 MB / 1.026 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005435/0.7518, allocations: 0.4973 MB / 1.216 GB, free: 1.066 MB / 1.026 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002895/0.7521, allocations: 92.52 kB / 1.216 GB, free: 1.031 MB / 1.026 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.482e-05/0.7521, allocations: 49.28 kB / 1.216 GB, free: 0.9766 MB / 1.026 GB Notification: Performance of pre-optimization done (n=96): time 2.494e-06/0.7521, allocations: 0 / 1.216 GB, free: 0.9766 MB / 1.026 GB Notification: Performance of matching and sorting (n=102): time 0.004698/0.7568, allocations: 3.085 MB / 1.219 GB, free: 15.28 MB / 1.042 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.447e-05/0.7568, allocations: 63.34 kB / 1.219 GB, free: 15.22 MB / 1.042 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001261/0.7581, allocations: 1.303 MB / 1.22 GB, free: 14.52 MB / 1.042 GB Notification: Performance of collectPreVariables (initialization): time 7.061e-05/0.7582, allocations: 49.33 kB / 1.22 GB, free: 14.47 MB / 1.042 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004492/0.7586, allocations: 0.8285 MB / 1.221 GB, free: 13.74 MB / 1.042 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002475/0.7589, allocations: 377.6 kB / 1.221 GB, free: 13.41 MB / 1.042 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002379/0.7591, allocations: 228.4 kB / 1.222 GB, free: 13.28 MB / 1.042 GB Notification: Performance of setup shared object (initialization): time 0.0001108/0.7592, allocations: 352.5 kB / 1.222 GB, free: 12.94 MB / 1.042 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0005675/0.7598, allocations: 449.7 kB / 1.222 GB, free: 12.71 MB / 1.042 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001054/0.7608, allocations: 1.231 MB / 1.224 GB, free: 11.51 MB / 1.042 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001271/0.7621, allocations: 1.245 MB / 1.225 GB, free: 10.65 MB / 1.042 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.402e-06/0.7621, allocations: 6.531 kB / 1.225 GB, free: 10.65 MB / 1.042 GB Notification: Performance of matching and sorting (n=150) (initialization): time 0.001691/0.7638, allocations: 1.416 MB / 1.226 GB, free: 9.941 MB / 1.042 GB Notification: Performance of prepare postOptimizeDAE: time 2.392e-05/0.7638, allocations: 10.94 kB / 1.226 GB, free: 9.941 MB / 1.042 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.385e-05/0.7638, allocations: 19.36 kB / 1.226 GB, free: 9.934 MB / 1.042 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.26e-05/0.7639, allocations: 16.25 kB / 1.226 GB, free: 9.934 MB / 1.042 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006255/0.7645, allocations: 276.6 kB / 1.227 GB, free: 9.871 MB / 1.042 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.866e-05/0.7645, allocations: 21.05 kB / 1.227 GB, free: 9.863 MB / 1.042 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0008602/0.7654, allocations: 67 kB / 1.227 GB, free: 9.832 MB / 1.042 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.604e-05/0.7654, allocations: 52.14 kB / 1.227 GB, free: 9.82 MB / 1.042 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001009/0.7664, allocations: 0.7798 MB / 1.227 GB, free: 9.371 MB / 1.042 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.000793/0.7672, allocations: 1.222 MB / 1.229 GB, free: 8.168 MB / 1.042 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001196/0.7684, allocations: 1.232 MB / 1.23 GB, free: 7.316 MB / 1.042 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 4.168e-06/0.7684, allocations: 6.875 kB / 1.23 GB, free: 7.312 MB / 1.042 GB Notification: Performance of matching and sorting (n=150) (initialization_lambda0): time 0.001502/0.7699, allocations: 1.405 MB / 1.231 GB, free: 6.609 MB / 1.042 GB Notification: Performance of prepare postOptimizeDAE: time 1.386e-05/0.77, allocations: 12.16 kB / 1.231 GB, free: 6.605 MB / 1.042 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.174e-06/0.77, allocations: 13.94 kB / 1.231 GB, free: 6.602 MB / 1.042 GB Notification: Performance of postOpt tearingSystem (initialization): time 9.257e-06/0.77, allocations: 17.34 kB / 1.231 GB, free: 6.598 MB / 1.042 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00055/0.7705, allocations: 273.1 kB / 1.232 GB, free: 6.539 MB / 1.042 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.232e-05/0.7705, allocations: 17.34 kB / 1.232 GB, free: 6.535 MB / 1.042 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007957/0.7713, allocations: 89.23 kB / 1.232 GB, free: 6.484 MB / 1.042 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.54e-05/0.7714, allocations: 47.78 kB / 1.232 GB, free: 6.477 MB / 1.042 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 41 * Number of states: 0 () * Number of discrete variables: 4 (vol.regularFlow[1],vol.regularFlow[2],vol.inFlow[2],vol.inFlow[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (150): * Single equations (assignments): 150 * 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 0.0002557/0.7716, allocations: 265.3 kB / 1.232 GB, free: 6.23 MB / 1.042 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001588/0.7718, allocations: 177.4 kB / 1.232 GB, free: 6.137 MB / 1.042 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001404/0.7732, allocations: 1.15 MB / 1.233 GB, free: 5.496 MB / 1.042 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.274e-06/0.7732, allocations: 10.75 kB / 1.233 GB, free: 5.496 MB / 1.042 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.769e-06/0.7732, allocations: 4 kB / 1.233 GB, free: 5.492 MB / 1.042 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001171/0.7744, allocations: 1.083 MB / 1.234 GB, free: 4.82 MB / 1.042 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003123/0.7775, allocations: 2.572 MB / 1.237 GB, free: 3 MB / 1.042 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.417e-06/0.7775, allocations: 0 / 1.237 GB, free: 3 MB / 1.042 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006154/0.7781, allocations: 243.7 kB / 1.237 GB, free: 2.762 MB / 1.042 GB Notification: Performance of postOpt tearingSystem (simulation): time 6.352e-06/0.7781, allocations: 8 kB / 1.237 GB, free: 2.754 MB / 1.042 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.458e-05/0.7782, allocations: 28.22 kB / 1.237 GB, free: 2.727 MB / 1.042 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 7.785e-06/0.7782, allocations: 15.92 kB / 1.237 GB, free: 2.711 MB / 1.042 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.616e-06/0.7782, allocations: 4.75 kB / 1.237 GB, free: 2.707 MB / 1.042 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001843/0.78, allocations: 1.769 MB / 1.239 GB, free: 0.8984 MB / 1.042 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0005074/0.7805, allocations: 266.7 kB / 1.239 GB, free: 0.6367 MB / 1.042 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001252/0.7807, allocations: 28 kB / 1.239 GB, free: 0.6094 MB / 1.042 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0005332/0.7812, allocations: 58.94 kB / 1.239 GB, free: 0.5547 MB / 1.042 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.938e-05/0.7813, allocations: 68.88 kB / 1.239 GB, free: 500 kB / 1.042 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.534e-05/0.7813, allocations: 35.98 kB / 1.239 GB, free: 464 kB / 1.042 GB Notification: Performance of sorting global known variables: time 0.0008446/0.7822, allocations: 0.8671 MB / 1.24 GB, free: 15.59 MB / 1.057 GB Notification: Performance of sort global known variables: time 9e-08/0.7822, allocations: 0 / 1.24 GB, free: 15.59 MB / 1.057 GB Notification: Performance of remove unused functions: time 0.001561/0.7837, allocations: 0.7616 MB / 1.241 GB, free: 14.83 MB / 1.057 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * Number of states: 9 (vol1.dynBal.medium.Xi[1],vol1.dynBal.U,vol1.dynBal.m,vol.medium.Xi[1],vol.medium.T,vol.m,vol2.dynBal.medium.Xi[1],vol2.dynBal.U,vol2.dynBal.m) * 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 (102): * Single equations (assignments): 102 * 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 0.002544/0.7863, allocations: 2.49 MB / 1.243 GB, free: 12.29 MB / 1.057 GB Notification: Performance of simCode: created initialization part: time 0.002078/0.7884, allocations: 1.63 MB / 1.245 GB, free: 10.66 MB / 1.057 GB Notification: Performance of simCode: created event and clocks part: time 3.536e-06/0.7884, allocations: 0.6875 kB / 1.245 GB, free: 10.66 MB / 1.057 GB Notification: Performance of simCode: created simulation system equations: time 0.0005407/0.7889, allocations: 0.5013 MB / 1.245 GB, free: 10.16 MB / 1.057 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002364/0.7913, allocations: 0.9148 MB / 1.246 GB, free: 9.281 MB / 1.057 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01371/0.805, allocations: 11.98 MB / 1.258 GB, free: 12.79 MB / 1.073 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006589/0.8056, allocations: 0.8772 MB / 1.259 GB, free: 11.86 MB / 1.073 GB Notification: Performance of simCode: alias equations: time 0.001502/0.8071, allocations: 0.5563 MB / 1.259 GB, free: 11.3 MB / 1.073 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0006788/0.8078, allocations: 0.6995 MB / 1.26 GB, free: 10.6 MB / 1.073 GB Notification: Performance of SimCode: time 9.72e-07/0.8078, allocations: 0 / 1.26 GB, free: 10.6 MB / 1.073 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.06488/0.8727, allocations: 49.49 MB / 1.308 GB, free: 10.13 MB / 1.12 GB Notification: Performance of buildModelFMU: Generate platform static: time 8.647/9.52, allocations: 9.5 kB / 1.308 GB, free: 10.13 MB / 1.12 GB " [Timeout remaining time 290] (rm -f Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolume.pipe ; mkfifo Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolume.pipe ; head -c 1048576 < Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolume.pipe >> ../files/Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolume.sim & python3 -m fmpy simulate --output-file Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolume_res.csv --start-time 0 --stop-time 2 --timeout 400 --relative-tolerance 1e-09 --interface-type ModelExchange --solver CVode --output-interval 0.0008 Buildings_11_Buildings_Fluid_MixingVolumes_Validation_MixingVolume.fmu > Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolume.pipe 2>&1) [Timeout 420.0] [Calling os._exit(0), Time elapsed: 13.694324514828622] Failed to read output from testmodel.py, exit status != 0: 9.633608450181782 9.643723799 8.910493988 Calling exit ...