Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Fluid.HeatExchangers.Examples.WaterCooler_T.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 0.001997/0.001997, allocations: 104.3 kB / 20.45 MB, free: 1.379 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 0.00241/0.00241, allocations: 204.1 kB / 23.74 MB, free: 4.543 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 1.496/1.496, allocations: 230.6 MB / 257.5 MB, free: 7.805 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA master/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA master/package.mo): time 0.9515/0.9515, allocations: 149.9 MB / 463.8 MB, free: 10.36 MB / 366.1 MB " [Timeout remaining time 179] Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA master/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: translateModel(IBPSA.Fluid.HeatExchangers.Examples.WaterCooler_T,tolerance=1e-08,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.HeatExchangers.Examples.WaterCooler_T") translateModel(IBPSA.Fluid.HeatExchangers.Examples.WaterCooler_T,tolerance=1e-08,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.HeatExchangers.Examples.WaterCooler_T") [Timeout 660] "Notification: IBPSA 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 0.002131/0.002131, allocations: 74.55 kB / 0.6423 GB, free: 9.629 MB / 478.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1918/0.194, allocations: 89.16 MB / 0.7294 GB, free: 0.5273 MB / 0.545 GB Notification: Performance of NFInst.instantiate(IBPSA.Fluid.HeatExchangers.Examples.WaterCooler_T): time 0.4481/0.6421, allocations: 49.56 MB / 0.7778 GB, free: 7.504 MB / 0.5762 GB Notification: Performance of NFInst.instExpressions: time 0.02559/0.6677, allocations: 15.92 MB / 0.7933 GB, free: 1.453 MB / 0.5762 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.004169/0.6719, allocations: 122.1 kB / 0.7934 GB, free: 1.391 MB / 0.5762 GB Notification: Performance of NFTyping.typeComponents: time 0.007257/0.6791, allocations: 1.948 MB / 0.7954 GB, free: 0.5469 MB / 0.5762 GB Notification: Performance of NFTyping.typeBindings: time 0.009504/0.6886, allocations: 2.686 MB / 0.798 GB, free: 15.01 MB / 0.5919 GB Notification: Performance of NFTyping.typeClassSections: time 0.007993/0.6966, allocations: 2.436 MB / 0.8004 GB, free: 13.81 MB / 0.5919 GB Notification: Performance of NFFlatten.flatten: time 0.01342/0.71, allocations: 7.452 MB / 0.8076 GB, free: 10.84 MB / 0.5919 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002879/0.7129, allocations: 1.359 MB / 0.809 GB, free: 10.14 MB / 0.5919 GB Notification: Performance of NFEvalConstants.evaluate: time 0.006604/0.7195, allocations: 2.487 MB / 0.8114 GB, free: 8.699 MB / 0.5919 GB Notification: Performance of NFSimplifyModel.simplify: time 0.003493/0.723, allocations: 1.393 MB / 0.8127 GB, free: 7.855 MB / 0.5919 GB Notification: Performance of NFPackage.collectConstants: time 0.0004565/0.7235, allocations: 168.1 kB / 0.8129 GB, free: 7.855 MB / 0.5919 GB Notification: Performance of NFFlatten.collectFunctions: time 0.005178/0.7286, allocations: 1.729 MB / 0.8146 GB, free: 7.004 MB / 0.5919 GB Notification: Performance of NFScalarize.scalarize: time 0.000884/0.7295, allocations: 0.6557 MB / 0.8152 GB, free: 6.531 MB / 0.5919 GB Notification: Performance of NFVerifyModel.verify: time 0.001761/0.7313, allocations: 0.9413 MB / 0.8162 GB, free: 5.965 MB / 0.5919 GB Notification: Performance of NFConvertDAE.convert: time 0.007982/0.7393, allocations: 3.87 MB / 0.8199 GB, free: 3.406 MB / 0.5919 GB Notification: Performance of FrontEnd - DAE generated: time 4.969e-06/0.7393, allocations: 9.312 kB / 0.8199 GB, free: 3.398 MB / 0.5919 GB Notification: Performance of FrontEnd: time 1.923e-06/0.7393, allocations: 0 / 0.8199 GB, free: 3.398 MB / 0.5919 GB Notification: Performance of Transformations before backend: time 7.671e-05/0.7393, allocations: 0 / 0.8199 GB, free: 3.398 MB / 0.5919 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 282 * Number of variables: 282 Notification: Performance of Generate backend data structure: time 0.006368/0.7457, allocations: 2.919 MB / 0.8228 GB, free: 1.211 MB / 0.5919 GB Notification: Performance of prepare preOptimizeDAE: time 4.374e-05/0.7458, allocations: 9.312 kB / 0.8228 GB, free: 1.211 MB / 0.5919 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.02632/0.7721, allocations: 4.359 MB / 0.8271 GB, free: 15.37 MB / 0.6075 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.006109/0.7782, allocations: 2.641 MB / 0.8296 GB, free: 13.57 MB / 0.6075 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 9.68e-05/0.7783, allocations: 86.97 kB / 0.8297 GB, free: 13.53 MB / 0.6075 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0003006/0.7786, allocations: 128 kB / 0.8298 GB, free: 13.48 MB / 0.6075 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01086/0.7894, allocations: 2.921 MB / 0.8327 GB, free: 11.75 MB / 0.6075 GB Notification: Performance of preOpt findStateOrder (simulation): time 4.1e-05/0.7895, allocations: 3.938 kB / 0.8327 GB, free: 11.75 MB / 0.6075 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001569/0.7896, allocations: 50.98 kB / 0.8327 GB, free: 11.71 MB / 0.6075 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.192e-05/0.7897, allocations: 28.47 kB / 0.8328 GB, free: 11.71 MB / 0.6075 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01816/0.8078, allocations: 3.802 MB / 0.8365 GB, free: 8.07 MB / 0.6075 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 0.03038/0.8382, allocations: 9.779 MB / 0.846 GB, free: 13.63 MB / 0.6231 GB Notification: Performance of preOpt comSubExp (simulation): time 0.01018/0.8484, allocations: 2.275 MB / 0.8483 GB, free: 11.34 MB / 0.6231 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.008667/0.8571, allocations: 1.782 MB / 0.85 GB, free: 9.559 MB / 0.6231 GB Notification: Performance of preOpt evalFunc (simulation): time 0.007544/0.8646, allocations: 3.568 MB / 0.8535 GB, free: 5.48 MB / 0.6231 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.008932/0.8736, allocations: 1.997 MB / 0.8554 GB, free: 3.441 MB / 0.6231 GB Notification: Performance of pre-optimization done (n=57): time 5.41e-06/0.8736, allocations: 0 / 0.8554 GB, free: 3.441 MB / 0.6231 GB Notification: Performance of matching and sorting (n=57): time 0.02662/0.9002, allocations: 5.206 MB / 0.8605 GB, free: 14.22 MB / 0.6387 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.932e-05/0.9002, allocations: 59.91 kB / 0.8606 GB, free: 14.15 MB / 0.6387 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.00465/0.9049, allocations: 2.125 MB / 0.8627 GB, free: 12 MB / 0.6387 GB Notification: Performance of collectPreVariables (initialization): time 0.0002918/0.9052, allocations: 45.7 kB / 0.8627 GB, free: 11.95 MB / 0.6387 GB Notification: Performance of collectInitialEqns (initialization): time 0.0013/0.9065, allocations: 1.032 MB / 0.8637 GB, free: 10.91 MB / 0.6387 GB Notification: Performance of collectInitialBindings (initialization): time 0.0004425/0.9069, allocations: 222.2 kB / 0.8639 GB, free: 10.69 MB / 0.6387 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0007494/0.9077, allocations: 318.7 kB / 0.8642 GB, free: 10.37 MB / 0.6387 GB Notification: Performance of setup shared object (initialization): time 0.0001399/0.9078, allocations: 305.1 kB / 0.8645 GB, free: 10.07 MB / 0.6387 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.009179/0.917, allocations: 1.975 MB / 0.8664 GB, free: 8.086 MB / 0.6387 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.009796/0.9268, allocations: 2.628 MB / 0.869 GB, free: 5.215 MB / 0.6387 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.01709/0.9439, allocations: 3.85 MB / 0.8728 GB, free: 1.195 MB / 0.6387 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.512e-05/0.9439, allocations: 8 kB / 0.8728 GB, free: 1.188 MB / 0.6387 GB Notification: Performance of matching and sorting (n=185) (initialization): time 0.01961/0.9635, allocations: 4.415 MB / 0.8771 GB, free: 12.75 MB / 0.6544 GB Notification: Performance of prepare postOptimizeDAE: time 8.139e-05/0.9636, allocations: 37.7 kB / 0.8771 GB, free: 12.71 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.005e-05/0.9636, allocations: 12 kB / 0.8771 GB, free: 12.7 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (initialization): time 4.734e-05/0.9637, allocations: 16 kB / 0.8771 GB, free: 12.68 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.005491/0.9692, allocations: 0.9367 MB / 0.8781 GB, free: 11.74 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 4.366e-05/0.9692, allocations: 28.42 kB / 0.8781 GB, free: 11.71 MB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.006007/0.9752, allocations: 0.7991 MB / 0.8789 GB, free: 10.91 MB / 0.6544 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003509/0.9756, allocations: 67.95 kB / 0.8789 GB, free: 10.85 MB / 0.6544 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.01014/0.9857, allocations: 2.391 MB / 0.8813 GB, free: 8.445 MB / 0.6544 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.009731/0.9954, allocations: 2.624 MB / 0.8838 GB, free: 5.574 MB / 0.6544 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.01676/1.012, allocations: 3.861 MB / 0.8876 GB, free: 1.547 MB / 0.6544 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.007e-05/1.012, allocations: 4 kB / 0.8876 GB, free: 1.543 MB / 0.6544 GB Notification: Performance of matching and sorting (n=185) (initialization_lambda0): time 0.01954/1.032, allocations: 4.406 MB / 0.8919 GB, free: 13.11 MB / 0.67 GB Notification: Performance of prepare postOptimizeDAE: time 6.857e-05/1.032, allocations: 37.7 kB / 0.8919 GB, free: 13.07 MB / 0.67 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.079e-05/1.032, allocations: 12 kB / 0.892 GB, free: 13.06 MB / 0.67 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.563e-05/1.032, allocations: 16.69 kB / 0.892 GB, free: 13.04 MB / 0.67 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.005462/1.037, allocations: 0.9323 MB / 0.8929 GB, free: 12.11 MB / 0.67 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 3.917e-05/1.037, allocations: 27.92 kB / 0.8929 GB, free: 12.08 MB / 0.67 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.006119/1.044, allocations: 0.7842 MB / 0.8937 GB, free: 11.3 MB / 0.67 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003338/1.044, allocations: 71.97 kB / 0.8937 GB, free: 11.23 MB / 0.67 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 53 * Number of states: 0 () * Number of discrete variables: 6 (TSet.count,$PRE.TSet.count,TSet.T_start,$PRE.TSet.T_start,$whenCondition1,conPI.I.trigger_internal) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (151): * Single equations (assignments): 148 * Array equations: 1 * Algorithm blocks: 1 * Record equations: 1 * 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 0.0005934/1.044, allocations: 252.7 kB / 0.894 GB, free: 10.97 MB / 0.67 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0008898/1.045, allocations: 214.5 kB / 0.8942 GB, free: 10.76 MB / 0.67 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01853/1.064, allocations: 3.826 MB / 0.8979 GB, free: 6.926 MB / 0.67 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.726e-05/1.064, allocations: 8 kB / 0.8979 GB, free: 6.918 MB / 0.67 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.554e-05/1.064, allocations: 4 kB / 0.8979 GB, free: 6.914 MB / 0.67 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.01696/1.081, allocations: 3.592 MB / 0.9014 GB, free: 3.266 MB / 0.67 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.02311/1.104, allocations: 5.645 MB / 0.907 GB, free: 13.41 MB / 0.6856 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 9.507e-06/1.104, allocations: 0 / 0.907 GB, free: 13.41 MB / 0.6856 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.004974/1.109, allocations: 0.7725 MB / 0.9077 GB, free: 12.63 MB / 0.6856 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0002589/1.109, allocations: 44.81 kB / 0.9078 GB, free: 12.59 MB / 0.6856 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001901/1.109, allocations: 23.97 kB / 0.9078 GB, free: 12.56 MB / 0.6856 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001473/1.111, allocations: 1.335 MB / 0.9091 GB, free: 11.13 MB / 0.6856 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.422e-06/1.111, allocations: 7.969 kB / 0.9091 GB, free: 11.12 MB / 0.6856 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0269/1.138, allocations: 5.715 MB / 0.9147 GB, free: 5.379 MB / 0.6856 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001732/1.14, allocations: 390.2 kB / 0.915 GB, free: 4.996 MB / 0.6856 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000771/1.14, allocations: 15.98 kB / 0.9151 GB, free: 4.98 MB / 0.6856 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.005674/1.146, allocations: 0.6828 MB / 0.9157 GB, free: 4.297 MB / 0.6856 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002315/1.146, allocations: 52.5 kB / 0.9158 GB, free: 4.242 MB / 0.6856 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001959/1.146, allocations: 35.95 kB / 0.9158 GB, free: 4.207 MB / 0.6856 GB Notification: Performance of sorting global known variables: time 0.003284/1.15, allocations: 1.4 MB / 0.9172 GB, free: 2.793 MB / 0.6856 GB Notification: Performance of sort global known variables: time 1.21e-07/1.15, allocations: 0 / 0.9172 GB, free: 2.793 MB / 0.6856 GB Notification: Performance of remove unused functions: time 0.004882/1.155, allocations: 1.107 MB / 0.9183 GB, free: 1.684 MB / 0.6856 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 5 (vol.dynBal.U,mov.motSpe.y,conPI.I.y,THeaOut.T,coo.outCon.T) * Number of discrete variables: 3 ($whenCondition1,TSet.T_start,TSet.count) * Number of discrete states: 1 (TSet.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (66): * Single equations (assignments): 57 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 6 * When equations: 2 * 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 {(1,2,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.003203/1.158, allocations: 0.8629 MB / 0.9191 GB, free: 1 MB / 0.6856 GB Notification: Performance of simCode: created initialization part: time 0.02834/1.186, allocations: 6.215 MB / 0.9252 GB, free: 10.75 MB / 0.7012 GB Notification: Performance of simCode: created event and clocks part: time 8.215e-06/1.186, allocations: 3.938 kB / 0.9252 GB, free: 10.75 MB / 0.7012 GB Notification: Performance of simCode: created simulation system equations: time 0.009201/1.195, allocations: 1.927 MB / 0.9271 GB, free: 8.809 MB / 0.7012 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.005165/1.2, allocations: 0.8816 MB / 0.9279 GB, free: 7.965 MB / 0.7012 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0171/1.218, allocations: 5.181 MB / 0.933 GB, free: 2.734 MB / 0.7012 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001559/1.219, allocations: 0.9499 MB / 0.9339 GB, free: 1.742 MB / 0.7012 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001182/1.22, allocations: 191.3 kB / 0.9341 GB, free: 1.555 MB / 0.7012 GB Notification: Performance of SimCode: time 1.222e-06/1.22, allocations: 4 kB / 0.9341 GB, free: 1.551 MB / 0.7012 GB Notification: Performance of Templates: time 0.07658/1.297, allocations: 43.7 MB / 0.9768 GB, free: 6.031 MB / 0.7481 GB " [Timeout remaining time 659] make -j1 -f IBPSA_latest_IBPSA.Fluid.HeatExchangers.Examples.WaterCooler_T.makefile [Timeout 660] (rm -f IBPSA_latest_IBPSA.Fluid.HeatExchangers.Examples.WaterCooler_T.pipe ; mkfifo IBPSA_latest_IBPSA.Fluid.HeatExchangers.Examples.WaterCooler_T.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Fluid.HeatExchangers.Examples.WaterCooler_T.pipe >> ../files/IBPSA_latest_IBPSA.Fluid.HeatExchangers.Examples.WaterCooler_T.sim & ./IBPSA_latest_IBPSA.Fluid.HeatExchangers.Examples.WaterCooler_T -abortSlowSimulation -alarm=480 -lv LOG_STATS > IBPSA_latest_IBPSA.Fluid.HeatExchangers.Examples.WaterCooler_T.pipe 2>&1) [Timeout 480] [Calling sys.exit(0), Time elapsed: 17.38186375098303] Failed to read output from testmodel.py, exit status != 0: 1.308828853070736 1.326305901 0.5831248490000001 Calling exit ...