Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ModelicaTest_4.0.0_ModelicaTest.MultiBody.FourbarVariants.JointUSR.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 0.001341/0.001341, allocations: 112.2 kB / 18.49 MB, free: 4.539 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 0.001357/0.001357, allocations: 219 kB / 21.46 MB, free: 1.586 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 1.48/1.48, allocations: 230.6 MB / 254.8 MB, free: 15.08 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.0.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.0.0+maint.om/package.mo): time 0.2255/0.2255, allocations: 44.91 MB / 355.8 MB, free: 12.31 MB / 286.1 MB " [Timeout remaining time 180] Using package ModelicaTest with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.0.0+maint.om/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(ModelicaTest.MultiBody.FourbarVariants.JointUSR,fileNamePrefix="ModelicaTest_4_0_0_ModelicaTest_MultiBody_FourbarVariants_JointUSR",fmuType="cs",version="2.0",platforms={"static"}) "" <> buildModelFMU(ModelicaTest.MultiBody.FourbarVariants.JointUSR,fileNamePrefix="ModelicaTest_4_0_0_ModelicaTest_MultiBody_FourbarVariants_JointUSR",fmuType="cs",version="2.0",platforms={"static"}) [Timeout 660] "Notification: ModelicaTest 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 0.001961/0.001961, allocations: 69.94 kB / 0.4885 GB, free: 11.68 MB / 350.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1388/0.1407, allocations: 65.42 MB / 0.5524 GB, free: 10.13 MB / 414.1 MB Notification: Performance of NFInst.instantiate(ModelicaTest.MultiBody.FourbarVariants.JointUSR): time 0.02217/0.1629, allocations: 17.72 MB / 0.5697 GB, free: 8.316 MB / 430.1 MB Notification: Performance of NFInst.instExpressions: time 0.01493/0.1778, allocations: 5.718 MB / 0.5753 GB, free: 2.578 MB / 430.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.004035/0.1819, allocations: 127.4 kB / 0.5754 GB, free: 2.453 MB / 430.1 MB Notification: Performance of NFTyping.typeComponents: time 0.009684/0.1915, allocations: 4.633 MB / 0.58 GB, free: 13.8 MB / 446.1 MB Notification: Performance of NFTyping.typeBindings: time 0.008374/0.1999, allocations: 3.058 MB / 0.583 GB, free: 10.73 MB / 446.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.003717/0.2036, allocations: 1.498 MB / 0.5844 GB, free: 9.234 MB / 446.1 MB Notification: Performance of NFFlatten.flatten: time 0.01602/0.2197, allocations: 8.952 MB / 0.5932 GB, free: 272 kB / 446.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.2996/0.5192, allocations: 5.457 MB / 0.5985 GB, free: 7.102 MB / 446.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.007854/0.5271, allocations: 3.055 MB / 0.6015 GB, free: 6.93 MB / 446.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.008833/0.5359, allocations: 4.619 MB / 0.606 GB, free: 6.512 MB / 446.1 MB Notification: Performance of NFPackage.collectConstants: time 0.002958/0.5389, allocations: 0.664 MB / 0.6066 GB, free: 6.512 MB / 446.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.005228/0.5441, allocations: 1.884 MB / 0.6085 GB, free: 6.508 MB / 446.1 MB Notification: Performance of NFScalarize.scalarize: time 0.00519/0.5493, allocations: 3.796 MB / 0.6122 GB, free: 6.066 MB / 446.1 MB Notification: Performance of NFVerifyModel.verify: time 0.006747/0.556, allocations: 4.223 MB / 0.6163 GB, free: 3.531 MB / 446.1 MB Notification: Performance of NFConvertDAE.convert: time 0.01579/0.5718, allocations: 13.66 MB / 0.6296 GB, free: 12.77 MB / 462.1 MB Notification: Performance of FrontEnd - DAE generated: time 5.451e-06/0.5718, allocations: 0 / 0.6296 GB, free: 12.77 MB / 462.1 MB Notification: Performance of FrontEnd: time 1.993e-06/0.5718, allocations: 0 / 0.6296 GB, free: 12.77 MB / 462.1 MB Notification: Performance of Transformations before backend: time 0.000475/0.5723, allocations: 0 / 0.6296 GB, free: 12.77 MB / 462.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 2782 * Number of variables: 2782 Notification: Performance of Generate backend data structure: time 0.02357/0.5959, allocations: 9.343 MB / 0.6388 GB, free: 6.613 MB / 462.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.365e-05/0.5959, allocations: 10.41 kB / 0.6388 GB, free: 6.613 MB / 462.1 MB Notification: Performance of preOpt introduceOutputRealDerivatives (simulation): time 0.0002639/0.5962, allocations: 223.4 kB / 0.639 GB, free: 6.57 MB / 462.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.003522/0.5997, allocations: 1.422 MB / 0.6404 GB, free: 5.73 MB / 462.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.03258/0.6323, allocations: 6.02 MB / 0.6462 GB, free: 1.344 MB / 462.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01391/0.6462, allocations: 6.014 MB / 0.6521 GB, free: 11.58 MB / 478.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0004712/0.6467, allocations: 436.8 kB / 0.6525 GB, free: 11.22 MB / 478.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.002616/0.6493, allocations: 0.6164 MB / 0.6531 GB, free: 10.68 MB / 478.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.04432/0.6936, allocations: 20.57 MB / 0.6732 GB, free: 5.312 MB / 494.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 0.0003727/0.694, allocations: 86.97 kB / 0.6733 GB, free: 5.262 MB / 494.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.00242/0.6964, allocations: 269.6 kB / 0.6736 GB, free: 5.066 MB / 494.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.006272/0.7027, allocations: 3.712 MB / 0.6772 GB, free: 1.402 MB / 494.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.04026/0.7429, allocations: 18.08 MB / 0.6948 GB, free: 15.62 MB / 0.5137 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 0.1131/0.856, allocations: 74.19 MB / 0.7673 GB, free: 4.406 MB / 0.5762 GB Notification: Performance of preOpt comSubExp (simulation): time 0.01978/0.8758, allocations: 7.144 MB / 0.7743 GB, free: 13.02 MB / 0.5919 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.007826/0.8836, allocations: 3.747 MB / 0.7779 GB, free: 9.262 MB / 0.5919 GB Notification: Performance of preOpt evalFunc (simulation): time 0.03784/0.9214, allocations: 18.07 MB / 0.7956 GB, free: 6.59 MB / 0.6075 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 6.937e-05/0.9215, allocations: 64.56 kB / 0.7956 GB, free: 6.52 MB / 0.6075 GB Notification: Performance of pre-optimization done (n=332): time 6.633e-06/0.9215, allocations: 4 kB / 0.7957 GB, free: 6.516 MB / 0.6075 GB Notification: Performance of matching and sorting (n=413): time 0.1274/1.049, allocations: 34.65 MB / 0.8295 GB, free: 3.863 MB / 0.6387 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001468/1.049, allocations: 198.7 kB / 0.8297 GB, free: 3.633 MB / 0.6387 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.2724/1.322, allocations: 6.486 MB / 0.836 GB, free: 216.7 MB / 0.6387 GB Notification: Performance of collectPreVariables (initialization): time 0.0008235/1.322, allocations: 88.64 kB / 0.8361 GB, free: 216.7 MB / 0.6387 GB Notification: Performance of collectInitialEqns (initialization): time 0.004084/1.326, allocations: 5.645 MB / 0.8416 GB, free: 213.7 MB / 0.6387 GB Notification: Performance of collectInitialBindings (initialization): time 0.001853/1.328, allocations: 1.587 MB / 0.8432 GB, free: 212.5 MB / 0.6387 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.003754/1.332, allocations: 2.085 MB / 0.8452 GB, free: 211.5 MB / 0.6387 GB Notification: Performance of setup shared object (initialization): time 5.101e-05/1.332, allocations: 302.7 kB / 0.8455 GB, free: 211.2 MB / 0.6387 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.00755/1.34, allocations: 4.183 MB / 0.8496 GB, free: 209.8 MB / 0.6387 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.009983/1.35, allocations: 10.08 MB / 0.8594 GB, free: 200.6 MB / 0.6387 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.01521/1.365, allocations: 15.37 MB / 0.8744 GB, free: 188.4 MB / 0.6387 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.000189/1.365, allocations: 64.72 kB / 0.8745 GB, free: 188.4 MB / 0.6387 GB Notification: Performance of matching and sorting (n=1377) (initialization): time 0.02583/1.391, allocations: 15.93 MB / 0.89 GB, free: 182.5 MB / 0.6387 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001038/1.391, allocations: 95.72 kB / 0.8901 GB, free: 182.5 MB / 0.6387 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0001885/1.391, allocations: 207.3 kB / 0.8903 GB, free: 182.5 MB / 0.6387 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.006713/1.398, allocations: 2.318 MB / 0.8926 GB, free: 181.9 MB / 0.6387 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.006878/1.405, allocations: 2.401 MB / 0.8949 GB, free: 179.8 MB / 0.6387 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01621/1.421, allocations: 12.51 MB / 0.9072 GB, free: 168.9 MB / 0.6387 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.009711/1.431, allocations: 0.5761 MB / 0.9077 GB, free: 168.4 MB / 0.6387 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.002044/1.433, allocations: 0.5918 MB / 0.9083 GB, free: 167.8 MB / 0.6387 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 937 * Number of states: 0 () * Number of discrete variables: 49 (jointUSR.revolute.positiveBranch,Body3.sphereColor[3],Body3.sphereColor[2],Body3.sphereColor[1],Body2.sphereColor[3],Body2.sphereColor[2],Body2.sphereColor[1],Body1.sphereColor[3],Body1.sphereColor[2],Body1.sphereColor[1],jointUSR.rod1Color[3],jointUSR.rod1Color[2],jointUSR.rod1Color[1],jointUSR.cylinderColor[3],jointUSR.cylinderColor[2],jointUSR.cylinderColor[1],jointUSR.sphereColor[3],jointUSR.sphereColor[2],jointUSR.sphereColor[1],jointUSR.revoluteColor[3],jointUSR.revoluteColor[2],jointUSR.revoluteColor[1],fixedFrame.color_x[3],fixedFrame.color_x[2],fixedFrame.color_x[1],b3.color[3],b3.color[2],b3.color[1],b2.color[3],b2.color[2],b2.color[1],b2.body.sphereColor[3],b2.body.sphereColor[2],b2.body.sphereColor[1],j2.boxColor[3],j2.boxColor[2],j2.boxColor[1],world.gravityArrowColor[3],world.gravityArrowColor[2],world.gravityArrowColor[1],world.axisColor_x[3],world.axisColor_x[2],world.axisColor_x[1],world.groundColor[3],world.groundColor[2],world.groundColor[1],world.gravitySphereColor[3],world.gravitySphereColor[2],world.gravitySphereColor[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (1276): * Single equations (assignments): 1269 * Array equations: 6 * 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 {(2,52,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.008591/1.441, allocations: 3.761 MB / 0.912 GB, free: 164.5 MB / 0.6387 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.001592/1.443, allocations: 0.6208 MB / 0.9126 GB, free: 163.9 MB / 0.6387 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01613/1.459, allocations: 8.145 MB / 0.9205 GB, free: 156.4 MB / 0.6387 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.148e-05/1.459, allocations: 56.53 kB / 0.9206 GB, free: 156.3 MB / 0.6387 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.678e-05/1.459, allocations: 12 kB / 0.9206 GB, free: 156.3 MB / 0.6387 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 7.262e-05/1.459, allocations: 17.91 kB / 0.9206 GB, free: 156.3 MB / 0.6387 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.03586/1.495, allocations: 18.52 MB / 0.9387 GB, free: 137.5 MB / 0.6387 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.88e-05/1.495, allocations: 13 kB / 0.9387 GB, free: 137.5 MB / 0.6387 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002658/1.498, allocations: 0.6162 MB / 0.9393 GB, free: 136.9 MB / 0.6387 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.005824/1.504, allocations: 1.738 MB / 0.941 GB, free: 135.1 MB / 0.6387 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0005135/1.504, allocations: 78.31 kB / 0.9411 GB, free: 135.1 MB / 0.6387 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.01364/1.518, allocations: 10.59 MB / 0.9514 GB, free: 124.3 MB / 0.6387 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 8.466e-06/1.518, allocations: 23.88 kB / 0.9515 GB, free: 124.3 MB / 0.6387 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01819/1.536, allocations: 12.16 MB / 0.9633 GB, free: 111.9 MB / 0.6387 GB Notification: Performance of postOpt removeConstants (simulation): time 0.002329/1.538, allocations: 0.6568 MB / 0.964 GB, free: 111.2 MB / 0.6387 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.002534/1.541, allocations: 72 kB / 0.964 GB, free: 111.1 MB / 0.6387 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.004118/1.545, allocations: 210.4 kB / 0.9642 GB, free: 110.9 MB / 0.6387 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.001/1.546, allocations: 249.7 kB / 0.9645 GB, free: 110.7 MB / 0.6387 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0005719/1.546, allocations: 112 kB / 0.9646 GB, free: 110.6 MB / 0.6387 GB Notification: Performance of sorting global known variables: time 0.007411/1.554, allocations: 4.038 MB / 0.9685 GB, free: 106.6 MB / 0.6387 GB Notification: Performance of sort global known variables: time 1.61e-07/1.554, allocations: 0 / 0.9685 GB, free: 106.6 MB / 0.6387 GB Notification: Performance of remove unused functions: time 0.01089/1.565, allocations: 1.877 MB / 0.9704 GB, free: 104.7 MB / 0.6387 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 52 * Number of states: 2 (j2.s,j2.v) * 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 (325): * Single equations (assignments): 318 * Array equations: 6 * 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 {(2,42,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.02071/1.585, allocations: 12.96 MB / 0.983 GB, free: 91.46 MB / 0.6387 GB Notification: Performance of simCode: created initialization part: time 0.01542/1.601, allocations: 9.414 MB / 0.9922 GB, free: 82.06 MB / 0.6387 GB Notification: Performance of simCode: created event and clocks part: time 1.418e-05/1.601, allocations: 4 kB / 0.9922 GB, free: 82.05 MB / 0.6387 GB Notification: Performance of simCode: created simulation system equations: time 0.004909/1.606, allocations: 3.047 MB / 0.9952 GB, free: 78.99 MB / 0.6387 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.007694/1.614, allocations: 0.8184 MB / 0.996 GB, free: 78.19 MB / 0.6387 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.4409/2.054, allocations: 87.65 MB / 1.082 GB, free: 214.7 MB / 0.6544 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.009507/2.064, allocations: 5.582 MB / 1.087 GB, free: 213.9 MB / 0.6544 GB Notification: Performance of simCode: alias equations: time 0.007584/2.071, allocations: 3.318 MB / 1.09 GB, free: 213.8 MB / 0.6544 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.004838/2.076, allocations: 3.669 MB / 1.094 GB, free: 212.6 MB / 0.6544 GB Notification: Performance of SimCode: time 1.352e-06/2.076, allocations: 3.719 kB / 1.094 GB, free: 212.6 MB / 0.6544 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.1766/2.253, allocations: 128.9 MB / 1.22 GB, free: 106.3 MB / 0.6544 GB Notification: Performance of buildModelFMU: Generate platform static: time 37.85/40.1, allocations: 4 kB / 1.22 GB, free: 106.3 MB / 0.6544 GB " [Timeout remaining time 620] (rm -f ModelicaTest_4.0.0_ModelicaTest.MultiBody.FourbarVariants.JointUSR.pipe ; mkfifo ModelicaTest_4.0.0_ModelicaTest.MultiBody.FourbarVariants.JointUSR.pipe ; head -c 1048576 < ModelicaTest_4.0.0_ModelicaTest.MultiBody.FourbarVariants.JointUSR.pipe >> ../files/ModelicaTest_4.0.0_ModelicaTest.MultiBody.FourbarVariants.JointUSR.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=ModelicaTest_4.0.0_ModelicaTest.MultiBody.FourbarVariants.JointUSR_res.mat --tempDir=temp_ModelicaTest_4_0_0_ModelicaTest_MultiBody_FourbarVariants_JointUSR_fmu --startTime=0 --stopTime=2 --stepSize=0.00039984 --timeout=50 --tolerance=1e-06 ModelicaTest_4_0_0_ModelicaTest_MultiBody_FourbarVariants_JointUSR.fmu > ModelicaTest_4.0.0_ModelicaTest.MultiBody.FourbarVariants.JointUSR.pipe 2>&1) [Timeout 52.5] [Calling os._exit(0), Time elapsed: 43.35408032097621] Failed to read output from testmodel.py, exit status != 0: ['time', 'j2.s', 'j2.v'] 40.329949704988394 40.339959836 39.765671404 Calling exit ...