Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr OpenIPSL_OpenIPSL.Examples.PSATSystems.ThreeArea.FourthOrder_AVRII.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 0.00145/0.00145, allocations: 99.64 kB / 18.94 MB, free: 2.551 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 1.501/1.501, allocations: 230.6 MB / 252.7 MB, free: 8.07 MB / 206.1 MB " [Timeout remaining time 178] 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 0.001706/0.001706, allocations: 210.1 kB / 309.2 MB, free: 2.934 MB / 238.1 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0/package.mo): time 0.5969/0.5969, allocations: 107.2 MB / 472.8 MB, free: 4.496 MB / 334.1 MB " [Timeout remaining time 179] Using package OpenIPSL with version 3.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0/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 Modelica with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 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(OpenIPSL.Examples.PSATSystems.ThreeArea.FourthOrder_AVRII,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="OpenIPSL_OpenIPSL.Examples.PSATSystems.ThreeArea.FourthOrder_AVRII") translateModel(OpenIPSL.Examples.PSATSystems.ThreeArea.FourthOrder_AVRII,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="OpenIPSL_OpenIPSL.Examples.PSATSystems.ThreeArea.FourthOrder_AVRII") [Timeout 660] "Notification: OpenIPSL requested package Complex of version 4.0.0. Complex 4.1.0 is used instead which states that it is fully compatible without conversion script needed. Notification: OpenIPSL 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 0.00295/0.00295, allocations: 89.91 kB / 0.6336 GB, free: 4.48 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.4858/0.4888, allocations: 80.13 MB / 0.7118 GB, free: 4.523 MB / 494.1 MB Notification: Performance of NFInst.instantiate(OpenIPSL.Examples.PSATSystems.ThreeArea.FourthOrder_AVRII): time 0.012/0.5008, allocations: 11.74 MB / 0.7233 GB, free: 12.57 MB / 0.4981 GB Notification: Performance of NFInst.instExpressions: time 0.00939/0.5102, allocations: 3.437 MB / 0.7267 GB, free: 10.11 MB / 0.4981 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003183/0.5134, allocations: 32.75 kB / 0.7267 GB, free: 10.11 MB / 0.4981 GB Notification: Performance of NFTyping.typeComponents: time 0.002095/0.5155, allocations: 0.5588 MB / 0.7272 GB, free: 9.805 MB / 0.4981 GB Notification: Performance of NFTyping.typeBindings: time 0.006073/0.5215, allocations: 1.559 MB / 0.7288 GB, free: 8.738 MB / 0.4981 GB Notification: Performance of NFTyping.typeClassSections: time 0.004397/0.5259, allocations: 1.517 MB / 0.7302 GB, free: 7.957 MB / 0.4981 GB Notification: Performance of NFFlatten.flatten: time 0.00697/0.5329, allocations: 3.769 MB / 0.7339 GB, free: 6.07 MB / 0.4981 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001276/0.5342, allocations: 0.5815 MB / 0.7345 GB, free: 5.715 MB / 0.4981 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003281/0.5375, allocations: 1.58 MB / 0.736 GB, free: 4.934 MB / 0.4981 GB Notification: Performance of NFSimplifyModel.simplify: time 0.003393/0.5408, allocations: 1.813 MB / 0.7378 GB, free: 3.961 MB / 0.4981 GB Notification: Performance of NFPackage.collectConstants: time 0.0007545/0.5416, allocations: 286 kB / 0.7381 GB, free: 3.961 MB / 0.4981 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001322/0.5429, allocations: 452.5 kB / 0.7385 GB, free: 3.887 MB / 0.4981 GB Notification: Performance of NFScalarize.scalarize: time 0.0007607/0.5437, allocations: 0.7567 MB / 0.7392 GB, free: 3.246 MB / 0.4981 GB Notification: Performance of NFVerifyModel.verify: time 0.001576/0.5453, allocations: 1.328 MB / 0.7405 GB, free: 2.305 MB / 0.4981 GB Notification: Performance of NFConvertDAE.convert: time 0.005251/0.5505, allocations: 4.052 MB / 0.7445 GB, free: 15.29 MB / 0.5137 GB Notification: Performance of FrontEnd - DAE generated: time 5.821e-06/0.5505, allocations: 0 / 0.7445 GB, free: 15.29 MB / 0.5137 GB Notification: Performance of FrontEnd: time 1.744e-06/0.5505, allocations: 0 / 0.7445 GB, free: 15.29 MB / 0.5137 GB Notification: Performance of Transformations before backend: time 0.0001043/0.5506, allocations: 0.9688 kB / 0.7445 GB, free: 15.29 MB / 0.5137 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 523 * Number of variables: 523 Notification: Performance of Generate backend data structure: time 0.02709/0.5777, allocations: 7.375 MB / 0.7517 GB, free: 10.93 MB / 0.5137 GB Notification: Performance of prepare preOptimizeDAE: time 5.486e-05/0.5778, allocations: 13.31 kB / 0.7517 GB, free: 10.93 MB / 0.5137 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0163/0.5941, allocations: 2.324 MB / 0.754 GB, free: 9.973 MB / 0.5137 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.005104/0.5992, allocations: 1.794 MB / 0.7557 GB, free: 8.578 MB / 0.5137 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0009239/0.6001, allocations: 0.828 MB / 0.7565 GB, free: 7.77 MB / 0.5137 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.000607/0.6007, allocations: 217.2 kB / 0.7567 GB, free: 7.695 MB / 0.5137 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.007069/0.6078, allocations: 3.095 MB / 0.7598 GB, free: 5.773 MB / 0.5137 GB Notification: Performance of preOpt findStateOrder (simulation): time 4.215e-05/0.6078, allocations: 0 / 0.7598 GB, free: 5.773 MB / 0.5137 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0002522/0.6081, allocations: 87.94 kB / 0.7599 GB, free: 5.688 MB / 0.5137 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.303e-05/0.6081, allocations: 48 kB / 0.7599 GB, free: 5.641 MB / 0.5137 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.006493/0.6146, allocations: 2.826 MB / 0.7627 GB, free: 2.785 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 0.01981/0.6344, allocations: 7.431 MB / 0.7699 GB, free: 11.19 MB / 0.5294 GB Notification: Performance of preOpt comSubExp (simulation): time 0.01216/0.6466, allocations: 3.567 MB / 0.7734 GB, free: 7.594 MB / 0.5294 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.00607/0.6526, allocations: 1.822 MB / 0.7752 GB, free: 5.754 MB / 0.5294 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002757/0.6529, allocations: 33.98 kB / 0.7752 GB, free: 5.719 MB / 0.5294 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.005254/0.6582, allocations: 2.298 MB / 0.7775 GB, free: 3.387 MB / 0.5294 GB Notification: Performance of pre-optimization done (n=248): time 5.79e-06/0.6582, allocations: 3.938 kB / 0.7775 GB, free: 3.383 MB / 0.5294 GB Notification: Performance of matching and sorting (n=248): time 0.1284/0.7866, allocations: 27.95 MB / 0.8048 GB, free: 7.328 MB / 0.5606 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001423/0.7867, allocations: 180.2 kB / 0.8049 GB, free: 7.117 MB / 0.5606 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.004643/0.7913, allocations: 2.248 MB / 0.8071 GB, free: 4.859 MB / 0.5606 GB Notification: Performance of collectPreVariables (initialization): time 0.0007326/0.7921, allocations: 73.69 kB / 0.8072 GB, free: 4.781 MB / 0.5606 GB Notification: Performance of collectInitialEqns (initialization): time 0.001296/0.7934, allocations: 1.193 MB / 0.8084 GB, free: 3.578 MB / 0.5606 GB Notification: Performance of collectInitialBindings (initialization): time 0.001648/0.795, allocations: 0.914 MB / 0.8093 GB, free: 2.656 MB / 0.5606 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.002093/0.7971, allocations: 0.5461 MB / 0.8098 GB, free: 2.102 MB / 0.5606 GB Notification: Performance of setup shared object (initialization): time 0.0001438/0.7973, allocations: 305.1 kB / 0.8101 GB, free: 1.801 MB / 0.5606 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.005246/0.8025, allocations: 2.043 MB / 0.8121 GB, free: 15.73 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.005564/0.8081, allocations: 2.406 MB / 0.8144 GB, free: 13.21 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0607/0.8688, allocations: 14.3 MB / 0.8284 GB, free: 14.67 MB / 0.5919 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.846e-05/0.8688, allocations: 0 / 0.8284 GB, free: 14.67 MB / 0.5919 GB Notification: Performance of matching and sorting (n=407) (initialization): time 0.04586/0.9146, allocations: 12.49 MB / 0.8406 GB, free: 2.086 MB / 0.5919 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001446/0.9148, allocations: 122.8 kB / 0.8407 GB, free: 1.941 MB / 0.5919 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.721e-05/0.9148, allocations: 4 kB / 0.8407 GB, free: 1.938 MB / 0.5919 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.01937/0.9342, allocations: 5.242 MB / 0.8458 GB, free: 12.69 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003333/0.9375, allocations: 0.55 MB / 0.8464 GB, free: 12.14 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.06633/1.004, allocations: 22.49 MB / 0.8683 GB, free: 5.523 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.005729/1.01, allocations: 493.9 kB / 0.8688 GB, free: 5.039 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0009839/1.011, allocations: 119.9 kB / 0.8689 GB, free: 4.922 MB / 0.6231 GB Warning: Assuming fixed start value for the following 7 variables: order3_2.delta:VARIABLE(flow=false start = order3_2.delta0 unit = \"rad\" fixed = true ) \"Rotor angle\" type: Real order3_2.w:VARIABLE(flow=false start = 1.0 fixed = true ) \"Rotor speed [pu]\" type: Real order3_2.e1q:VARIABLE(start = order3_2.e1q0 unit = \"1\" fixed = true ) \"q-axis transient voltage\" type: Real order2.delta:VARIABLE(flow=false start = order2.delta0 unit = \"rad\" fixed = true ) \"Rotor angle\" type: Real order2.w:VARIABLE(flow=false start = 1.0 fixed = true ) \"Rotor speed [pu]\" type: Real order4_1.delta:VARIABLE(flow=false start = order4_1.delta0 unit = \"rad\" fixed = true ) \"Rotor angle\" type: Real order4_1.w:VARIABLE(flow=false start = 1.0 fixed = true ) \"Rotor speed [pu]\" type: Real Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 29 * Number of states: 0 () * Number of discrete variables: 4 ($whenCondition2,$whenCondition1,$whenCondition4,$whenCondition3) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (320): * Single equations (assignments): 315 * Array equations: 0 * Algorithm blocks: 4 * 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 {(63,25,8.1%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.002632/1.013, allocations: 0.5321 MB / 0.8694 GB, free: 4.371 MB / 0.6231 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.001394/1.015, allocations: 306 kB / 0.8697 GB, free: 4.07 MB / 0.6231 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.06054/1.075, allocations: 11.87 MB / 0.8813 GB, free: 8.129 MB / 0.6387 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.229e-05/1.075, allocations: 24 kB / 0.8813 GB, free: 8.105 MB / 0.6387 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 8.954e-05/1.075, allocations: 20 kB / 0.8814 GB, free: 8.086 MB / 0.6387 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 8.772e-05/1.075, allocations: 11.95 kB / 0.8814 GB, free: 8.074 MB / 0.6387 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 postOpt removeSimpleEquations (simulation): time 0.06436/1.14, allocations: 14.22 MB / 0.8953 GB, free: 9.758 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.489e-05/1.14, allocations: 4 kB / 0.8953 GB, free: 9.754 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001752/1.142, allocations: 247.6 kB / 0.8955 GB, free: 9.512 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.01982/1.161, allocations: 5.235 MB / 0.9006 GB, free: 4.262 MB / 0.6544 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0009643/1.162, allocations: 47.98 kB / 0.9007 GB, free: 4.215 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.06725/1.23, allocations: 23.99 MB / 0.9241 GB, free: 11.88 MB / 0.6856 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.22e-06/1.23, allocations: 0 / 0.9241 GB, free: 11.88 MB / 0.6856 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.05015/1.28, allocations: 14.31 MB / 0.9381 GB, free: 13.43 MB / 0.7012 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001444/1.281, allocations: 345.3 kB / 0.9384 GB, free: 13.09 MB / 0.7012 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001384/1.283, allocations: 44 kB / 0.9384 GB, free: 13.05 MB / 0.7012 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.004189/1.287, allocations: 299.6 kB / 0.9387 GB, free: 12.76 MB / 0.7012 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.002731/1.289, allocations: 0.5995 MB / 0.9393 GB, free: 12.15 MB / 0.7012 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0005823/1.29, allocations: 63.98 kB / 0.9394 GB, free: 12.09 MB / 0.7012 GB Notification: Performance of sorting global known variables: time 0.003399/1.293, allocations: 1.483 MB / 0.9408 GB, free: 10.6 MB / 0.7012 GB Notification: Performance of sort global known variables: time 4.81e-07/1.293, allocations: 0 / 0.9408 GB, free: 10.6 MB / 0.7012 GB Notification: Performance of remove unused functions: time 0.005576/1.299, allocations: 1.179 MB / 0.942 GB, free: 9.422 MB / 0.7012 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 17 (order3_2.delta,order3_2.w,order3_2.e1q,order2.delta,order2.w,order4_1.delta,order4_1.w,order4_1.e1q,order4_1.e1d,Exc1.ExcitationSystem.x_scaled[1],Exc1.derivativeBlock.x,Exc1.firstOrder2.y,Exc1.simpleLagLim.state,Exc2.ExcitationSystem.x_scaled[1],Exc2.derivativeBlock.x,Exc2.firstOrder2.y,Exc2.simpleLagLim.state) * Number of discrete variables: 4 ($whenCondition3,$whenCondition4,$whenCondition1,$whenCondition2) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (157): * Single equations (assignments): 152 * Array equations: 0 * Algorithm blocks: 2 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 3 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(65,23,7.8%)} * Non-linear torn systems (#iteration vars, #inner vars): 2 systems {(1,6), (1,6)} Notification: Performance of Backend phase and start with SimCode phase: time 0.000797/1.3, allocations: 184 kB / 0.9421 GB, free: 9.234 MB / 0.7012 GB Notification: Performance of simCode: created initialization part: time 0.0208/1.321, allocations: 6.455 MB / 0.9485 GB, free: 2.668 MB / 0.7012 GB Notification: Performance of simCode: created event and clocks part: time 7.444e-06/1.321, allocations: 0 / 0.9485 GB, free: 2.668 MB / 0.7012 GB Notification: Performance of simCode: created simulation system equations: time 0.0149/1.336, allocations: 4.278 MB / 0.9526 GB, free: 14.31 MB / 0.7169 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003789/1.339, allocations: 285.6 kB / 0.9529 GB, free: 14.04 MB / 0.7169 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01346/1.353, allocations: 5.491 MB / 0.9583 GB, free: 8.508 MB / 0.7169 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.00242/1.355, allocations: 1.252 MB / 0.9595 GB, free: 7.215 MB / 0.7169 GB Notification: Performance of simCode: alias equations: time 0.001516/1.357, allocations: 262.2 kB / 0.9597 GB, free: 6.957 MB / 0.7169 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0008895/1.358, allocations: 171.4 kB / 0.9599 GB, free: 6.789 MB / 0.7169 GB Notification: Performance of SimCode: time 1.393e-06/1.358, allocations: 0 / 0.9599 GB, free: 6.789 MB / 0.7169 GB Notification: Performance of Templates: time 0.4375/1.795, allocations: 72.46 MB / 1.031 GB, free: 217.7 MB / 0.7325 GB " [Timeout remaining time 658] make -j1 -f OpenIPSL_OpenIPSL.Examples.PSATSystems.ThreeArea.FourthOrder_AVRII.makefile [Timeout 660] (rm -f OpenIPSL_OpenIPSL.Examples.PSATSystems.ThreeArea.FourthOrder_AVRII.pipe ; mkfifo OpenIPSL_OpenIPSL.Examples.PSATSystems.ThreeArea.FourthOrder_AVRII.pipe ; head -c 1048576 < OpenIPSL_OpenIPSL.Examples.PSATSystems.ThreeArea.FourthOrder_AVRII.pipe >> ../files/OpenIPSL_OpenIPSL.Examples.PSATSystems.ThreeArea.FourthOrder_AVRII.sim & ./OpenIPSL_OpenIPSL.Examples.PSATSystems.ThreeArea.FourthOrder_AVRII -abortSlowSimulation -alarm=480 -lv LOG_STATS > OpenIPSL_OpenIPSL.Examples.PSATSystems.ThreeArea.FourthOrder_AVRII.pipe 2>&1) [Timeout 480] [Calling sys.exit(0), Time elapsed: 9.672283696010709] Failed to read output from testmodel.py, exit status != 0: 1.8048902992159128 1.813634621 1.260767981 Calling exit ...