Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildingSystems_BuildingSystems.Electrical.DC.Lines.Examples.DCLinesLinearized.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 0.001229/0.001229, allocations: 113.5 kB / 19.73 MB, free: 2.242 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 0.001479/0.001479, allocations: 218.8 kB / 23.04 MB, free: 5.074 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 1.397/1.397, allocations: 230.6 MB / 256.8 MB, free: 7.988 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 master/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 master/package.mo): time 0.002508/0.002508, allocations: 281.2 kB / 313.5 MB, free: 2.805 MB / 238.1 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems master/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems master/package.mo): time 1.174/1.174, allocations: 180.6 MB / 0.5377 GB, free: 13.06 MB / 382.1 MB " [Timeout remaining time 179] Using package BuildingSystems with version 2.0.0-beta (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems master/package.mo) Using package NcDataReader2 with version 2.5.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 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: "" <> buildModelFMU(BuildingSystems.Electrical.DC.Lines.Examples.DCLinesLinearized,fileNamePrefix="BuildingSystems_BuildingSystems_Electrical_DC_Lines_Examples_DCLinesLinearized",fmuType="cs",version="2.0",platforms={"static"}) "" <> buildModelFMU(BuildingSystems.Electrical.DC.Lines.Examples.DCLinesLinearized,fileNamePrefix="BuildingSystems_BuildingSystems_Electrical_DC_Lines_Examples_DCLinesLinearized",fmuType="cs",version="2.0",platforms={"static"}) [Timeout 660] "Notification: NcDataReader2 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: BuildingSystems 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 0.002837/0.002837, allocations: 98.34 kB / 0.7404 GB, free: 28.22 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1554/0.1582, allocations: 95.38 MB / 0.8335 GB, free: 8.625 MB / 0.5762 GB Notification: Performance of NFInst.instantiate(BuildingSystems.Electrical.DC.Lines.Examples.DCLinesLinearized): time 0.02788/0.1861, allocations: 23.5 MB / 0.8565 GB, free: 1.043 MB / 0.5919 GB Notification: Performance of NFInst.instExpressions: time 0.02956/0.2157, allocations: 18.19 MB / 0.8742 GB, free: 14.79 MB / 0.6231 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003269/0.2189, allocations: 150.8 kB / 0.8744 GB, free: 14.64 MB / 0.6231 GB Notification: Performance of NFTyping.typeComponents: time 0.01134/0.2303, allocations: 4.347 MB / 0.8786 GB, free: 10.29 MB / 0.6231 GB Notification: Performance of NFTyping.typeBindings: time 0.01065/0.2409, allocations: 3.599 MB / 0.8821 GB, free: 6.691 MB / 0.6231 GB Notification: Performance of NFTyping.typeClassSections: time 0.00377/0.2447, allocations: 1.326 MB / 0.8834 GB, free: 5.367 MB / 0.6231 GB Notification: Performance of NFFlatten.flatten: time 0.01004/0.2547, allocations: 5.808 MB / 0.8891 GB, free: 15.54 MB / 0.6387 GB Notification: Performance of NFFlatten.resolveConnections: time 0.006/0.2607, allocations: 2.877 MB / 0.8919 GB, free: 12.58 MB / 0.6387 GB Notification: Performance of NFEvalConstants.evaluate: time 0.005139/0.2659, allocations: 2.527 MB / 0.8944 GB, free: 10.05 MB / 0.6387 GB Notification: Performance of NFSimplifyModel.simplify: time 0.004993/0.2709, allocations: 2.51 MB / 0.8968 GB, free: 7.527 MB / 0.6387 GB Notification: Performance of NFPackage.collectConstants: time 0.0009788/0.2718, allocations: 372 kB / 0.8972 GB, free: 7.164 MB / 0.6387 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002481/0.2743, allocations: 1.057 MB / 0.8982 GB, free: 6.105 MB / 0.6387 GB Notification: Performance of NFScalarize.scalarize: time 0.001254/0.2756, allocations: 1.222 MB / 0.8994 GB, free: 4.879 MB / 0.6387 GB Notification: Performance of NFVerifyModel.verify: time 0.003016/0.2786, allocations: 2.006 MB / 0.9014 GB, free: 2.863 MB / 0.6387 GB Notification: Performance of NFConvertDAE.convert: time 0.007126/0.2857, allocations: 5.199 MB / 0.9065 GB, free: 13.64 MB / 0.6544 GB Notification: Performance of FrontEnd - DAE generated: time 4.649e-06/0.2857, allocations: 0 / 0.9065 GB, free: 13.64 MB / 0.6544 GB Notification: Performance of FrontEnd: time 1.523e-06/0.2857, allocations: 0 / 0.9065 GB, free: 13.64 MB / 0.6544 GB Notification: Performance of Transformations before backend: time 0.0001094/0.2858, allocations: 0 / 0.9065 GB, free: 13.64 MB / 0.6544 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 635 * Number of variables: 635 Notification: Performance of Generate backend data structure: time 0.01106/0.2969, allocations: 4.654 MB / 0.911 GB, free: 8.891 MB / 0.6544 GB Notification: Performance of prepare preOptimizeDAE: time 4.902e-05/0.2969, allocations: 9.344 kB / 0.911 GB, free: 8.883 MB / 0.6544 GB Notification: Performance of preOpt introduceOutputRealDerivatives (simulation): time 9.45e-05/0.297, allocations: 68.92 kB / 0.9111 GB, free: 8.812 MB / 0.6544 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.000634/0.2977, allocations: 370.3 kB / 0.9114 GB, free: 8.441 MB / 0.6544 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01617/0.3138, allocations: 3.279 MB / 0.9146 GB, free: 5.156 MB / 0.6544 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004964/0.3188, allocations: 2.147 MB / 0.9167 GB, free: 2.934 MB / 0.6544 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0004459/0.3192, allocations: 469.8 kB / 0.9172 GB, free: 2.41 MB / 0.6544 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0006577/0.3199, allocations: 232 kB / 0.9174 GB, free: 2.184 MB / 0.6544 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01177/0.3317, allocations: 4.81 MB / 0.9221 GB, free: 13.23 MB / 0.67 GB Notification: Performance of preOpt findStateOrder (simulation): time 5.287e-05/0.3317, allocations: 4 kB / 0.9221 GB, free: 13.22 MB / 0.67 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0003592/0.3321, allocations: 104 kB / 0.9222 GB, free: 13.12 MB / 0.67 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0002203/0.3323, allocations: 176.8 kB / 0.9224 GB, free: 12.95 MB / 0.67 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01464/0.3469, allocations: 5.198 MB / 0.9274 GB, free: 7.73 MB / 0.67 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.02407/0.371, allocations: 14.34 MB / 0.9414 GB, free: 8.219 MB / 0.6856 GB Notification: Performance of preOpt comSubExp (simulation): time 0.01036/0.3814, allocations: 3.27 MB / 0.9446 GB, free: 4.945 MB / 0.6856 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.003951/0.3853, allocations: 1.369 MB / 0.946 GB, free: 3.578 MB / 0.6856 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0001178/0.3854, allocations: 25.3 kB / 0.946 GB, free: 3.555 MB / 0.6856 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.004531/0.39, allocations: 1.794 MB / 0.9477 GB, free: 1.691 MB / 0.6856 GB Notification: Performance of pre-optimization done (n=163): time 5.76e-06/0.39, allocations: 4 kB / 0.9478 GB, free: 1.688 MB / 0.6856 GB Notification: Performance of matching and sorting (n=250): time 0.1344/0.5244, allocations: 27.53 MB / 0.9746 GB, free: 6.105 MB / 0.7169 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0003319/0.5248, allocations: 0.4928 MB / 0.9751 GB, free: 5.5 MB / 0.7169 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003466/0.5282, allocations: 2.296 MB / 0.9774 GB, free: 3.191 MB / 0.7169 GB Notification: Performance of collectPreVariables (initialization): time 0.000471/0.5287, allocations: 77.7 kB / 0.9774 GB, free: 3.109 MB / 0.7169 GB Notification: Performance of collectInitialEqns (initialization): time 0.001425/0.5301, allocations: 1.46 MB / 0.9789 GB, free: 1.637 MB / 0.7169 GB Notification: Performance of collectInitialBindings (initialization): time 0.001049/0.5312, allocations: 0.8559 MB / 0.9797 GB, free: 0.7734 MB / 0.7169 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0009318/0.5321, allocations: 424.5 kB / 0.9801 GB, free: 360 kB / 0.7169 GB Notification: Performance of setup shared object (initialization): time 0.0001189/0.5322, allocations: 301.1 kB / 0.9804 GB, free: 56 kB / 0.7169 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.3261/0.8583, allocations: 1.924 MB / 0.9823 GB, free: 135.8 MB / 0.7169 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.005696/0.864, allocations: 2.231 MB / 0.9844 GB, free: 135.6 MB / 0.7169 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.01022/0.8742, allocations: 4.166 MB / 0.9885 GB, free: 134.1 MB / 0.7169 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.357e-05/0.8742, allocations: 2.469 kB / 0.9885 GB, free: 134.1 MB / 0.7169 GB Notification: Performance of matching and sorting (n=299) (initialization): time 0.02001/0.8942, allocations: 6.477 MB / 0.9948 GB, free: 132 MB / 0.7169 GB Notification: Performance of prepare postOptimizeDAE: time 7.066e-05/0.8943, allocations: 151.7 kB / 0.995 GB, free: 131.9 MB / 0.7169 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.865e-05/0.8943, allocations: 5.531 kB / 0.995 GB, free: 131.9 MB / 0.7169 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.009669/0.904, allocations: 2.922 MB / 0.9978 GB, free: 131.4 MB / 0.7169 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002849/0.9069, allocations: 489.3 kB / 0.9983 GB, free: 131.4 MB / 0.7169 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.03409/0.9409, allocations: 18.65 MB / 1.017 GB, free: 121 MB / 0.7169 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003859/0.9448, allocations: 329.1 kB / 1.017 GB, free: 120.8 MB / 0.7169 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.00036/0.9452, allocations: 87.19 kB / 1.017 GB, free: 120.8 MB / 0.7169 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 24 * Number of states: 0 () * Number of discrete variables: 25 (varLoad5.count,$PRE.varLoad5.count,varLoad5.T_start,$PRE.varLoad5.T_start,varLoad4.count,$PRE.varLoad4.count,varLoad4.T_start,$PRE.varLoad4.T_start,varLoad3.count,$PRE.varLoad3.count,varLoad3.T_start,$PRE.varLoad3.T_start,varLoad2.count,$PRE.varLoad2.count,varLoad2.T_start,$PRE.varLoad2.T_start,varLoad1.count,$PRE.varLoad1.count,varLoad1.T_start,$PRE.varLoad1.T_start,$whenCondition1,$whenCondition2,$whenCondition3,$whenCondition4,$whenCondition5) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (162): * Single equations (assignments): 155 * Array equations: 0 * Algorithm blocks: 5 * 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): 1 system {(10,52,45.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(8,64)} Notification: Performance of prepare postOptimizeDAE: time 0.001383/0.9465, allocations: 0.7021 MB / 1.018 GB, free: 120.3 MB / 0.7169 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000566/0.9471, allocations: 349.5 kB / 1.018 GB, free: 120.3 MB / 0.7169 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0006765/0.9478, allocations: 386.7 kB / 1.018 GB, free: 119.9 MB / 0.7169 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.339e-05/0.9478, allocations: 31.98 kB / 1.018 GB, free: 119.9 MB / 0.7169 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.892e-05/0.9478, allocations: 8 kB / 1.018 GB, free: 119.9 MB / 0.7169 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.563e-05/0.9478, allocations: 11.95 kB / 1.018 GB, free: 119.9 MB / 0.7169 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003576/0.9514, allocations: 3.605 MB / 1.022 GB, free: 116.3 MB / 0.7169 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.116e-05/0.9514, allocations: 0 / 1.022 GB, free: 116.3 MB / 0.7169 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002494/0.9539, allocations: 419.3 kB / 1.022 GB, free: 115.9 MB / 0.7169 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.009515/0.9634, allocations: 2.87 MB / 1.025 GB, free: 113 MB / 0.7169 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0005738/0.964, allocations: 55.95 kB / 1.025 GB, free: 112.9 MB / 0.7169 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0332/0.9972, allocations: 18.43 MB / 1.043 GB, free: 94.3 MB / 0.7169 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.994e-06/0.9972, allocations: 0 / 1.043 GB, free: 94.3 MB / 0.7169 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01581/1.013, allocations: 6.112 MB / 1.049 GB, free: 88.15 MB / 0.7169 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001768/1.015, allocations: 0.6374 MB / 1.05 GB, free: 87.52 MB / 0.7169 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0006102/1.015, allocations: 44 kB / 1.05 GB, free: 87.47 MB / 0.7169 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002999/1.018, allocations: 323.5 kB / 1.05 GB, free: 87.16 MB / 0.7169 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.001053/1.019, allocations: 362.5 kB / 1.05 GB, free: 86.8 MB / 0.7169 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001967/1.02, allocations: 67.97 kB / 1.05 GB, free: 86.73 MB / 0.7169 GB Notification: Performance of sorting global known variables: time 0.001697/1.021, allocations: 1.54 MB / 1.052 GB, free: 85.2 MB / 0.7169 GB Notification: Performance of sort global known variables: time 1e-07/1.021, allocations: 0 / 1.052 GB, free: 85.2 MB / 0.7169 GB Notification: Performance of remove unused functions: time 0.002443/1.024, allocations: 1.043 MB / 1.053 GB, free: 84.15 MB / 0.7169 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 15 ($whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,varLoad1.T_start,varLoad1.count,varLoad2.T_start,varLoad2.count,varLoad3.T_start,varLoad3.count,varLoad4.T_start,varLoad4.count,varLoad5.T_start,varLoad5.count) * Number of discrete states: 5 (varLoad1.count,varLoad2.count,varLoad3.count,varLoad4.count,varLoad5.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (118): * Single equations (assignments): 106 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 10 * 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): 1 system {(10,52,60.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(10,62)} Notification: Performance of Backend phase and start with SimCode phase: time 0.01599/1.04, allocations: 6.744 MB / 1.06 GB, free: 77.37 MB / 0.7169 GB Notification: Performance of simCode: created initialization part: time 0.02117/1.061, allocations: 6.308 MB / 1.066 GB, free: 70.97 MB / 0.7169 GB Notification: Performance of simCode: created event and clocks part: time 7.053e-06/1.061, allocations: 0 / 1.066 GB, free: 70.97 MB / 0.7169 GB Notification: Performance of simCode: created simulation system equations: time 0.01613/1.077, allocations: 3.928 MB / 1.07 GB, free: 67.03 MB / 0.7169 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004464/1.082, allocations: 1.13 MB / 1.071 GB, free: 65.98 MB / 0.7169 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.06485/1.146, allocations: 31.85 MB / 1.102 GB, free: 33.69 MB / 0.7169 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001463/1.148, allocations: 2.231 MB / 1.104 GB, free: 31.43 MB / 0.7169 GB Notification: Performance of simCode: alias equations: time 0.002077/1.15, allocations: 0.498 MB / 1.104 GB, free: 30.92 MB / 0.7169 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001561/1.152, allocations: 1.339 MB / 1.106 GB, free: 29.58 MB / 0.7169 GB Notification: Performance of SimCode: time 9.22e-07/1.152, allocations: 4 kB / 1.106 GB, free: 29.58 MB / 0.7169 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.1752/1.327, allocations: 105.9 MB / 1.209 GB, free: 4.812 MB / 0.795 GB Notification: Performance of buildModelFMU: Generate platform static: time 20.76/22.09, allocations: 15.5 kB / 1.209 GB, free: 4.801 MB / 0.795 GB " [Timeout remaining time 638] (rm -f BuildingSystems_BuildingSystems.Electrical.DC.Lines.Examples.DCLinesLinearized.pipe ; mkfifo BuildingSystems_BuildingSystems.Electrical.DC.Lines.Examples.DCLinesLinearized.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Electrical.DC.Lines.Examples.DCLinesLinearized.pipe >> ../files/BuildingSystems_BuildingSystems.Electrical.DC.Lines.Examples.DCLinesLinearized.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_BuildingSystems_BuildingSystems_Electrical_DC_Lines_Examples_DCLinesLinearized_fmu --startTime=0 --stopTime=4000 --stepSize=1.6 --timeout=50 --tolerance=1e-06 BuildingSystems_BuildingSystems_Electrical_DC_Lines_Examples_DCLinesLinearized.fmu > BuildingSystems_BuildingSystems.Electrical.DC.Lines.Examples.DCLinesLinearized.pipe 2>&1) [Timeout 52.5] [Calling os._exit(0), Time elapsed: 26.26516106101917] Failed to read output from testmodel.py, exit status != 0: 22.331454884028062 22.361564515 22.070309792 Calling exit ...