Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildSysPro_BuildSysPro.IBPSA.Fluid.Storage.Validation.StratifiedLoadingUnloading.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 0.001332/0.001332, allocations: 93.92 kB / 19.73 MB, free: 2.129 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 0.001449/0.001449, allocations: 216.2 kB / 23.03 MB, free: 4.953 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 1.493/1.493, allocations: 230.6 MB / 256.8 MB, free: 7.805 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/package.mo", uses=false) [Timeout 180] "[/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/Building/BuildingEnvelope/HeatTransfer/package.mo:2:1-40:17:writable] Warning: Soil_case_nappe was referenced in the package.order file, but was not found in package.mo, Soil_case_nappe/package.mo or Soil_case_nappe.mo. Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/package.mo): time 0.9732/0.9732, allocations: 145 MB / 458.2 MB, free: 15.28 MB / 366.1 MB " [Timeout remaining time 179] Using package BuildSysPro with version 3.6.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/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(BuildSysPro.IBPSA.Fluid.Storage.Validation.StratifiedLoadingUnloading,fileNamePrefix="BuildSysPro_BuildSysPro_IBPSA_Fluid_Storage_Validation_StratifiedLoadingUnloading",fmuType="cs",version="2.0",platforms={"static"}) "" <> buildModelFMU(BuildSysPro.IBPSA.Fluid.Storage.Validation.StratifiedLoadingUnloading,fileNamePrefix="BuildSysPro_BuildSysPro_IBPSA_Fluid_Storage_Validation_StratifiedLoadingUnloading",fmuType="cs",version="2.0",platforms={"static"}) [Timeout 660] "Notification: BuildSysPro 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 0.002671/0.002671, allocations: 67.09 kB / 0.6338 GB, free: 6.727 MB / 462.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2192/0.2219, allocations: 87.89 MB / 0.7197 GB, free: 14.86 MB / 0.545 GB Notification: Performance of NFInst.instantiate(BuildSysPro.IBPSA.Fluid.Storage.Validation.StratifiedLoadingUnloading): time 0.4744/0.6963, allocations: 51.49 MB / 0.77 GB, free: 2.469 MB / 0.5606 GB Notification: Performance of NFInst.instExpressions: time 0.02703/0.7233, allocations: 16.83 MB / 0.7864 GB, free: 9.441 MB / 0.5762 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.004135/0.7274, allocations: 101.6 kB / 0.7865 GB, free: 9.391 MB / 0.5762 GB Notification: Performance of NFTyping.typeComponents: time 0.003276/0.7307, allocations: 0.8984 MB / 0.7874 GB, free: 8.855 MB / 0.5762 GB Notification: Performance of NFTyping.typeBindings: time 0.008608/0.7393, allocations: 2.676 MB / 0.79 GB, free: 7.285 MB / 0.5762 GB Notification: Performance of NFTyping.typeClassSections: time 0.004518/0.7438, allocations: 1.584 MB / 0.7915 GB, free: 6.398 MB / 0.5762 GB Notification: Performance of NFFlatten.flatten: time 0.02575/0.7696, allocations: 21.81 MB / 0.8128 GB, free: 10.33 MB / 0.5919 GB Notification: Performance of NFFlatten.resolveConnections: time 0.01283/0.7824, allocations: 7.086 MB / 0.8197 GB, free: 5.461 MB / 0.5919 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01724/0.7997, allocations: 7.385 MB / 0.827 GB, free: 14.2 MB / 0.6075 GB Notification: Performance of NFSimplifyModel.simplify: time 0.01332/0.813, allocations: 6.666 MB / 0.8335 GB, free: 7.512 MB / 0.6075 GB Notification: Performance of NFPackage.collectConstants: time 0.003928/0.8169, allocations: 0.9375 MB / 0.8344 GB, free: 6.574 MB / 0.6075 GB Notification: Performance of NFFlatten.collectFunctions: time 0.007841/0.8247, allocations: 1.585 MB / 0.8359 GB, free: 4.988 MB / 0.6075 GB Notification: Performance of NFScalarize.scalarize: time 0.005371/0.8301, allocations: 2.441 MB / 0.8383 GB, free: 2.539 MB / 0.6075 GB Notification: Performance of NFVerifyModel.verify: time 0.0113/0.8414, allocations: 3.852 MB / 0.8421 GB, free: 14.67 MB / 0.6231 GB Notification: Performance of NFConvertDAE.convert: time 0.02295/0.8644, allocations: 14 MB / 0.8558 GB, free: 0.625 MB / 0.6231 GB Notification: Performance of FrontEnd - DAE generated: time 7.053e-06/0.8644, allocations: 0 / 0.8558 GB, free: 0.625 MB / 0.6231 GB Notification: Performance of FrontEnd: time 1.933e-06/0.8644, allocations: 0 / 0.8558 GB, free: 0.625 MB / 0.6231 GB Notification: Performance of Transformations before backend: time 0.0004874/0.8649, allocations: 0 / 0.8558 GB, free: 0.625 MB / 0.6231 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 1564 * Number of variables: 1564 Notification: Performance of Generate backend data structure: time 0.02977/0.8946, allocations: 8.65 MB / 0.8642 GB, free: 7.883 MB / 0.6387 GB Notification: Performance of prepare preOptimizeDAE: time 6.003e-05/0.8947, allocations: 12.02 kB / 0.8642 GB, free: 7.871 MB / 0.6387 GB Notification: Performance of preOpt introduceOutputRealDerivatives (simulation): time 0.0002251/0.8949, allocations: 164.4 kB / 0.8644 GB, free: 7.707 MB / 0.6387 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.003417/0.8983, allocations: 0.8344 MB / 0.8652 GB, free: 6.863 MB / 0.6387 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.006172/0.9045, allocations: 0.9605 MB / 0.8661 GB, free: 5.898 MB / 0.6387 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01697/0.9215, allocations: 6.796 MB / 0.8728 GB, free: 15.03 MB / 0.6544 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0005927/0.9221, allocations: 468.1 kB / 0.8732 GB, free: 14.57 MB / 0.6544 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.002617/0.9247, allocations: 0.6014 MB / 0.8738 GB, free: 13.97 MB / 0.6544 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.028/0.9527, allocations: 10.1 MB / 0.8837 GB, free: 3.285 MB / 0.6544 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0003559/0.953, allocations: 15.88 kB / 0.8837 GB, free: 3.27 MB / 0.6544 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.002626/0.9557, allocations: 260 kB / 0.8839 GB, free: 3.016 MB / 0.6544 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0003024/0.956, allocations: 187.9 kB / 0.8841 GB, free: 2.832 MB / 0.6544 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01915/0.9751, allocations: 7.461 MB / 0.8914 GB, free: 11.36 MB / 0.67 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 0.05797/1.033, allocations: 27.25 MB / 0.918 GB, free: 15.65 MB / 0.7012 GB Notification: Performance of preOpt comSubExp (simulation): time 0.007715/1.041, allocations: 3.977 MB / 0.9219 GB, free: 11.67 MB / 0.7012 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.00558/1.046, allocations: 3.033 MB / 0.9248 GB, free: 8.637 MB / 0.7012 GB Notification: Performance of preOpt evalFunc (simulation): time 0.001124/1.048, allocations: 206.3 kB / 0.925 GB, free: 8.434 MB / 0.7012 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.005474/1.053, allocations: 3.456 MB / 0.9284 GB, free: 4.684 MB / 0.7012 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.002778/1.056, allocations: 397 kB / 0.9288 GB, free: 4.293 MB / 0.7012 GB Notification: Performance of pre-optimization done (n=317): time 1.072e-05/1.056, allocations: 3.938 kB / 0.9288 GB, free: 4.289 MB / 0.7012 GB Notification: Performance of matching and sorting (n=317): time 0.01729/1.073, allocations: 7 MB / 0.9356 GB, free: 13.24 MB / 0.7169 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001011/1.073, allocations: 85.91 kB / 0.9357 GB, free: 13.14 MB / 0.7169 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.01371/1.087, allocations: 5.686 MB / 0.9413 GB, free: 7.477 MB / 0.7169 GB Notification: Performance of collectPreVariables (initialization): time 0.0008753/1.088, allocations: 89.7 kB / 0.9414 GB, free: 7.383 MB / 0.7169 GB Notification: Performance of collectInitialEqns (initialization): time 0.004127/1.092, allocations: 3.263 MB / 0.9445 GB, free: 4.094 MB / 0.7169 GB Notification: Performance of collectInitialBindings (initialization): time 0.001996/1.094, allocations: 1.174 MB / 0.9457 GB, free: 2.91 MB / 0.7169 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001689/1.096, allocations: 0.8624 MB / 0.9465 GB, free: 2.035 MB / 0.7169 GB Notification: Performance of setup shared object (initialization): time 0.0001274/1.096, allocations: 305.1 kB / 0.9468 GB, free: 1.734 MB / 0.7169 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.003782/1.099, allocations: 2.192 MB / 0.949 GB, free: 15.52 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.005153/1.105, allocations: 3.83 MB / 0.9527 GB, free: 10.96 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.009668/1.114, allocations: 6.323 MB / 0.9589 GB, free: 3.922 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.9e-05/1.114, allocations: 12 kB / 0.9589 GB, free: 3.91 MB / 0.7325 GB Notification: Performance of matching and sorting (n=569) (initialization): time 0.0142/1.129, allocations: 6.827 MB / 0.9656 GB, free: 13.03 MB / 0.7481 GB Notification: Performance of prepare postOptimizeDAE: time 9.33e-05/1.129, allocations: 49.7 kB / 0.9656 GB, free: 12.97 MB / 0.7481 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.214e-05/1.129, allocations: 48 kB / 0.9656 GB, free: 12.93 MB / 0.7481 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001178/1.13, allocations: 437.7 kB / 0.9661 GB, free: 12.49 MB / 0.7481 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004594/1.134, allocations: 1.014 MB / 0.9671 GB, free: 11.48 MB / 0.7481 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.007294/1.142, allocations: 5.408 MB / 0.9723 GB, free: 5.844 MB / 0.7481 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.006219/1.148, allocations: 291.5 kB / 0.9726 GB, free: 5.559 MB / 0.7481 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001356/1.149, allocations: 220 kB / 0.9728 GB, free: 5.344 MB / 0.7481 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 222 * Number of states: 0 () * Number of discrete variables: 7 (pulse.count,$PRE.pulse.count,pulse.T_start,$PRE.pulse.T_start,$whenCondition1,dHTan.local_reset,dHTanEnh.local_reset) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (540): * Single equations (assignments): 537 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(1,14,100.0%), (1,14,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.00669/1.156, allocations: 2.477 MB / 0.9752 GB, free: 2.855 MB / 0.7481 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.002646/1.159, allocations: 0.5553 MB / 0.9758 GB, free: 2.297 MB / 0.7481 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0106/1.169, allocations: 5.26 MB / 0.9809 GB, free: 12.99 MB / 0.7637 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.054e-05/1.169, allocations: 35.94 kB / 0.981 GB, free: 12.95 MB / 0.7637 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.198e-05/1.169, allocations: 4 kB / 0.981 GB, free: 12.95 MB / 0.7637 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.00756/1.177, allocations: 4.524 MB / 0.9854 GB, free: 8.32 MB / 0.7637 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.02529/1.202, allocations: 11.09 MB / 0.9962 GB, free: 13.11 MB / 0.7794 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.081e-05/1.202, allocations: 4.125 kB / 0.9962 GB, free: 13.11 MB / 0.7794 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002916/1.205, allocations: 0.6436 MB / 0.9968 GB, free: 12.46 MB / 0.7794 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0008916/1.206, allocations: 376.4 kB / 0.9972 GB, free: 12.09 MB / 0.7794 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0002693/1.206, allocations: 83.95 kB / 0.9973 GB, free: 12.01 MB / 0.7794 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.006036/1.212, allocations: 5.323 MB / 1.002 GB, free: 6.461 MB / 0.7794 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.294e-06/1.212, allocations: 0 / 1.002 GB, free: 6.461 MB / 0.7794 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01366/1.226, allocations: 7.756 MB / 1.01 GB, free: 14.61 MB / 0.795 GB Notification: Performance of postOpt removeConstants (simulation): time 0.004042/1.23, allocations: 1.143 MB / 1.011 GB, free: 13.46 MB / 0.795 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001438/1.231, allocations: 71.92 kB / 1.011 GB, free: 13.39 MB / 0.795 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.003917/1.235, allocations: 196 kB / 1.011 GB, free: 13.2 MB / 0.795 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0005521/1.236, allocations: 214 kB / 1.012 GB, free: 12.99 MB / 0.795 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.000403/1.236, allocations: 143.9 kB / 1.012 GB, free: 12.85 MB / 0.795 GB Notification: Performance of sorting global known variables: time 0.007754/1.244, allocations: 3.967 MB / 1.016 GB, free: 8.906 MB / 0.795 GB Notification: Performance of sort global known variables: time 3.4e-07/1.244, allocations: 0 / 1.016 GB, free: 8.906 MB / 0.795 GB Notification: Performance of remove unused functions: time 0.008367/1.252, allocations: 2.02 MB / 1.018 GB, free: 6.883 MB / 0.795 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * Number of states: 16 (tanEnh.vol[1].dynBal.U,tanEnh.vol[2].dynBal.U,tanEnh.vol[3].dynBal.U,tanEnh.vol[4].dynBal.U,tanEnh.vol[5].dynBal.U,tanEnh.vol[6].dynBal.U,tanEnh.vol[7].dynBal.U,tan.vol[1].dynBal.U,tan.vol[2].dynBal.U,tan.vol[3].dynBal.U,tan.vol[4].dynBal.U,tan.vol[5].dynBal.U,tan.vol[6].dynBal.U,tan.vol[7].dynBal.U,dHTanEnh.y,dHTan.y) * Number of discrete variables: 3 ($whenCondition1,pulse.T_start,pulse.count) * Number of discrete states: 1 (pulse.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (296): * Single equations (assignments): 289 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 3 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(1,14,100.0%), (1,14,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.01546/1.268, allocations: 8.676 MB / 1.026 GB, free: 14.1 MB / 0.8106 GB Notification: Performance of simCode: created initialization part: time 0.009517/1.277, allocations: 5.263 MB / 1.031 GB, free: 8.781 MB / 0.8106 GB Notification: Performance of simCode: created event and clocks part: time 1.046e-05/1.277, allocations: 8.062 kB / 1.031 GB, free: 8.773 MB / 0.8106 GB Notification: Performance of simCode: created simulation system equations: time 0.004244/1.282, allocations: 2.365 MB / 1.034 GB, free: 6.379 MB / 0.8106 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.01823/1.3, allocations: 3.393 MB / 1.037 GB, free: 3.078 MB / 0.8106 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.452/1.752, allocations: 52.74 MB / 1.088 GB, free: 275.7 MB / 0.8419 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.005873/1.758, allocations: 4.145 MB / 1.092 GB, free: 274.6 MB / 0.8419 GB Notification: Performance of simCode: alias equations: time 0.006938/1.765, allocations: 2.069 MB / 1.094 GB, free: 274.6 MB / 0.8419 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.004635/1.769, allocations: 2.679 MB / 1.097 GB, free: 272.5 MB / 0.8419 GB Notification: Performance of SimCode: time 1.573e-06/1.769, allocations: 0 / 1.097 GB, free: 272.5 MB / 0.8419 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.2138/1.983, allocations: 171.8 MB / 1.265 GB, free: 122.1 MB / 0.8419 GB Notification: Performance of buildModelFMU: Generate platform static: time 23.9/25.88, allocations: 13.25 kB / 1.265 GB, free: 122.1 MB / 0.8419 GB " [Timeout remaining time 634] (rm -f BuildSysPro_BuildSysPro.IBPSA.Fluid.Storage.Validation.StratifiedLoadingUnloading.pipe ; mkfifo BuildSysPro_BuildSysPro.IBPSA.Fluid.Storage.Validation.StratifiedLoadingUnloading.pipe ; head -c 1048576 < BuildSysPro_BuildSysPro.IBPSA.Fluid.Storage.Validation.StratifiedLoadingUnloading.pipe >> ../files/BuildSysPro_BuildSysPro.IBPSA.Fluid.Storage.Validation.StratifiedLoadingUnloading.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_BuildSysPro_BuildSysPro_IBPSA_Fluid_Storage_Validation_StratifiedLoadingUnloading_fmu --startTime=0 --stopTime=14400 --stepSize=5.76 --timeout=50 --tolerance=1e-06 BuildSysPro_BuildSysPro_IBPSA_Fluid_Storage_Validation_StratifiedLoadingUnloading.fmu > BuildSysPro_BuildSysPro.IBPSA.Fluid.Storage.Validation.StratifiedLoadingUnloading.pipe 2>&1) [Timeout 52.5] [Calling sys.exit(0), Time elapsed: 30.235036149038933] Failed to read output from testmodel.py, exit status != 0: 26.14665736700408 26.162468983 25.294338657 Calling exit ...