Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_12_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase11.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 0.0007958/0.0007958, allocations: 80.44 kB / 19.17 MB, free: 0.7422 MB / 13.93 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 0.0008157/0.0008157, allocations: 169.9 kB / 22.46 MB, free: 2.105 MB / 18.57 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 0.9153/0.9153, allocations: 177.1 MB / 202.8 MB, free: 5.73 MB / 186.7 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.2-maint.12.x/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.2-maint.12.x/package.mo): time 1.741/1.741, allocations: 377.8 MB / 0.6221 GB, free: 8.652 MB / 0.5886 GB " [Timeout remaining time 178] Using package Buildings with version 12.1.2 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.2-maint.12.x/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(Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase11,fileNamePrefix="Buildings_12_Buildings_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase11",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase11,fileNamePrefix="Buildings_12_Buildings_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase11",fmuType="me",version="2.0",platforms={"static"}) [Timeout 300] "Notification: Performance of FrontEnd - loaded program: time 1.303e-06/1.303e-06, allocations: 0 / 0.981 GB, free: 2.59 MB / 0.9323 GB Notification: Performance of FrontEnd - Absyn->SCode: time 1.931e-05/2.061e-05, allocations: 2.281 kB / 0.981 GB, free: 2.586 MB / 0.9323 GB Notification: Performance of NFInst.instantiate(Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase11): time 0.5587/0.5588, allocations: 139.8 MB / 1.117 GB, free: 18.45 MB / 0.9948 GB Notification: Performance of NFInst.instExpressions: time 0.01903/0.5778, allocations: 20.19 MB / 1.137 GB, free: 4.539 MB / 0.9948 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002203/0.58, allocations: 86.62 kB / 1.137 GB, free: 4.496 MB / 0.9948 GB Notification: Performance of NFTyping.typeComponents: time 0.002428/0.5824, allocations: 1.994 MB / 1.139 GB, free: 4.195 MB / 0.9948 GB Notification: Performance of NFTyping.typeBindings: time 0.001915/0.5843, allocations: 1.415 MB / 1.141 GB, free: 3.773 MB / 0.9948 GB Notification: Performance of NFTyping.typeClassSections: time 0.001144/0.5855, allocations: 0.598 MB / 1.141 GB, free: 3.434 MB / 0.9948 GB Notification: Performance of NFFlatten.flatten: time 0.001546/0.587, allocations: 2.032 MB / 1.143 GB, free: 2.578 MB / 0.9948 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0009453/0.588, allocations: 0.9286 MB / 1.144 GB, free: 2.199 MB / 0.9948 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001129/0.5891, allocations: 1.153 MB / 1.145 GB, free: 1.809 MB / 0.9948 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001384/0.5905, allocations: 1.477 MB / 1.147 GB, free: 1.582 MB / 0.9948 GB Notification: Performance of NFPackage.collectConstants: time 0.0001394/0.5906, allocations: 108.5 kB / 1.147 GB, free: 1.582 MB / 0.9948 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0002788/0.5909, allocations: 160.1 kB / 1.147 GB, free: 1.566 MB / 0.9948 GB Notification: Performance of NFScalarize.scalarize: time 0.0003239/0.5912, allocations: 0.5435 MB / 1.147 GB, free: 1.281 MB / 0.9948 GB Notification: Performance of NFVerifyModel.verify: time 0.0003407/0.5916, allocations: 472.1 kB / 1.148 GB, free: 1.051 MB / 0.9948 GB Notification: Performance of NFConvertDAE.convert: time 0.001541/0.5931, allocations: 1.935 MB / 1.15 GB, free: 320 kB / 0.9948 GB Notification: Performance of FrontEnd - DAE generated: time 4.018e-06/0.5931, allocations: 0.7031 kB / 1.15 GB, free: 320 kB / 0.9948 GB Notification: Performance of FrontEnd: time 1.202e-06/0.5931, allocations: 0 / 1.15 GB, free: 320 kB / 0.9948 GB Notification: Performance of Transformations before backend: time 1.859e-05/0.5931, allocations: 0 / 1.15 GB, free: 320 kB / 0.9948 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 196 * Number of variables: 196 Notification: Performance of Generate backend data structure: time 0.002543/0.5957, allocations: 2.462 MB / 1.152 GB, free: 14.71 MB / 1.01 GB Notification: Performance of prepare preOptimizeDAE: time 3.88e-05/0.5957, allocations: 10.06 kB / 1.152 GB, free: 14.71 MB / 1.01 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.000129/0.5958, allocations: 128.8 kB / 1.152 GB, free: 14.62 MB / 1.01 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0003333/0.5962, allocations: 261.6 kB / 1.153 GB, free: 14.48 MB / 1.01 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001051/0.5972, allocations: 1.002 MB / 1.154 GB, free: 13.8 MB / 1.01 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001136/0.5973, allocations: 128.2 kB / 1.154 GB, free: 13.71 MB / 1.01 GB Notification: Performance of preOpt expandDerOperator (simulation): time 9.926e-05/0.5974, allocations: 87.97 kB / 1.154 GB, free: 13.68 MB / 1.01 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001135/0.5986, allocations: 0.9223 MB / 1.155 GB, free: 13.23 MB / 1.01 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.076e-05/0.5986, allocations: 1.375 kB / 1.155 GB, free: 13.23 MB / 1.01 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.929e-05/0.5986, allocations: 32.92 kB / 1.155 GB, free: 13.2 MB / 1.01 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.473e-05/0.5987, allocations: 18.81 kB / 1.155 GB, free: 13.2 MB / 1.01 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0009421/0.5996, allocations: 0.6644 MB / 1.155 GB, free: 12.98 MB / 1.01 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 0.003456/0.6031, allocations: 3.031 MB / 1.158 GB, free: 11.31 MB / 1.01 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001098/0.6042, allocations: 0.67 MB / 1.159 GB, free: 11.05 MB / 1.01 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005975/0.6047, allocations: 385.9 kB / 1.159 GB, free: 10.92 MB / 1.01 GB Notification: Performance of preOpt evalFunc (simulation): time 4.065e-05/0.6048, allocations: 12.94 kB / 1.159 GB, free: 10.92 MB / 1.01 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0006037/0.6054, allocations: 432.2 kB / 1.16 GB, free: 10.76 MB / 1.01 GB Notification: Performance of pre-optimization done (n=79): time 2.094e-06/0.6054, allocations: 0 / 1.16 GB, free: 10.76 MB / 1.01 GB Notification: Performance of matching and sorting (n=79): time 0.003765/0.6092, allocations: 1.941 MB / 1.162 GB, free: 10.15 MB / 1.01 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.185e-05/0.6092, allocations: 90.06 kB / 1.162 GB, free: 10.05 MB / 1.01 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002797/0.612, allocations: 3.26 MB / 1.165 GB, free: 9 MB / 1.01 GB Notification: Performance of collectPreVariables (initialization): time 5.113e-05/0.6121, allocations: 51.06 kB / 1.165 GB, free: 8.953 MB / 1.01 GB Notification: Performance of collectInitialEqns (initialization): time 0.0005705/0.6126, allocations: 0.9495 MB / 1.166 GB, free: 8.215 MB / 1.01 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001601/0.6128, allocations: 268.2 kB / 1.166 GB, free: 8.004 MB / 1.01 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000166/0.613, allocations: 152.8 kB / 1.166 GB, free: 7.922 MB / 1.01 GB Notification: Performance of setup shared object (initialization): time 8.593e-05/0.613, allocations: 337.8 kB / 1.167 GB, free: 7.605 MB / 1.01 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004383/0.6135, allocations: 323.6 kB / 1.167 GB, free: 7.504 MB / 1.01 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005185/0.614, allocations: 0.4895 MB / 1.167 GB, free: 7.219 MB / 1.01 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0009597/0.615, allocations: 0.7494 MB / 1.168 GB, free: 6.816 MB / 1.01 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.178e-06/0.615, allocations: 1.406 kB / 1.168 GB, free: 6.816 MB / 1.01 GB Notification: Performance of matching and sorting (n=110) (initialization): time 0.001603/0.6166, allocations: 1.309 MB / 1.169 GB, free: 6.277 MB / 1.01 GB Notification: Performance of prepare postOptimizeDAE: time 1.796e-05/0.6166, allocations: 6.594 kB / 1.169 GB, free: 6.277 MB / 1.01 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.285e-06/0.6166, allocations: 3.562 kB / 1.169 GB, free: 6.277 MB / 1.01 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0006188/0.6172, allocations: 317.2 kB / 1.17 GB, free: 6.199 MB / 1.01 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002731/0.6175, allocations: 128 kB / 1.17 GB, free: 6.188 MB / 1.01 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003928/0.6214, allocations: 3.896 MB / 1.174 GB, free: 3.645 MB / 1.01 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003979/0.6218, allocations: 116.5 kB / 1.174 GB, free: 3.582 MB / 1.01 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.658e-05/0.6219, allocations: 30.16 kB / 1.174 GB, free: 3.578 MB / 1.01 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 16 * Number of states: 0 () * Number of discrete variables: 34 (assEqu.nFai,$PRE.assEqu.nFai,$whenCondition7,$PRE.intGai.nextTimeEvent,$whenCondition6,$PRE.reference.nextTimeEvent,$whenCondition5,$PRE.setTemp.nextTimeEvent,$whenCondition4,$whenCondition2,intGai.nextTimeEvent,intGai.nextTimeEventScaled,$PRE.intGai.nextTimeEventScaled,reference.nextTimeEvent,reference.nextTimeEventScaled,$PRE.reference.nextTimeEventScaled,setTemp.nextTimeEvent,setTemp.nextTimeEventScaled,$PRE.setTemp.nextTimeEventScaled,hysteresis.y,$PRE.hysteresis.y,assEqu.satisfied,$PRE.assEqu.satisfied,mean.y_last,$PRE.mean.y_last,not1.y,timer.entryTime,$PRE.timer.entryTime,thr.y,cha.u,$PRE.cha.u,$whenCondition1,$whenCondition3,conHeaCoo.I.trigger_internal) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (78): * Single equations (assignments): 77 * Array equations: 0 * 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): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(2,31)} Notification: Performance of prepare postOptimizeDAE: time 0.0006002/0.6225, allocations: 0.5869 MB / 1.174 GB, free: 3.32 MB / 1.01 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001728/0.6226, allocations: 219.4 kB / 1.175 GB, free: 3.199 MB / 1.01 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001613/0.6242, allocations: 1.246 MB / 1.176 GB, free: 2.707 MB / 1.01 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.444e-06/0.6243, allocations: 8.688 kB / 1.176 GB, free: 2.707 MB / 1.01 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.968e-06/0.6243, allocations: 5.156 kB / 1.176 GB, free: 2.703 MB / 1.01 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 8.536e-06/0.6243, allocations: 4.359 kB / 1.176 GB, free: 2.703 MB / 1.01 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002838/0.6271, allocations: 2.363 MB / 1.178 GB, free: 1.664 MB / 1.01 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.707e-06/0.6271, allocations: 0 / 1.178 GB, free: 1.664 MB / 1.01 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001969/0.6273, allocations: 74.45 kB / 1.178 GB, free: 1.656 MB / 1.01 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0005566/0.6279, allocations: 336.9 kB / 1.178 GB, free: 1.562 MB / 1.01 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.898e-05/0.6279, allocations: 21.22 kB / 1.179 GB, free: 1.551 MB / 1.01 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.004408/0.6323, allocations: 5.281 MB / 1.184 GB, free: 13.59 MB / 1.026 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.473e-06/0.6323, allocations: 96 / 1.184 GB, free: 13.59 MB / 1.026 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001927/0.6342, allocations: 1.673 MB / 1.185 GB, free: 12.82 MB / 1.026 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002842/0.6345, allocations: 258 kB / 1.186 GB, free: 12.66 MB / 1.026 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 9.572e-05/0.6346, allocations: 21.39 kB / 1.186 GB, free: 12.64 MB / 1.026 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0002632/0.6349, allocations: 40.11 kB / 1.186 GB, free: 12.64 MB / 1.026 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001578/0.635, allocations: 107.2 kB / 1.186 GB, free: 12.61 MB / 1.026 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.32e-05/0.6351, allocations: 26.09 kB / 1.186 GB, free: 12.61 MB / 1.026 GB Notification: Performance of sorting global known variables: time 0.001754/0.6368, allocations: 2.383 MB / 1.188 GB, free: 11.82 MB / 1.026 GB Notification: Performance of sort global known variables: time 6e-08/0.6368, allocations: 0 / 1.188 GB, free: 11.82 MB / 1.026 GB Notification: Performance of remove unused functions: time 0.000789/0.6376, allocations: 328 kB / 1.188 GB, free: 11.75 MB / 1.026 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 5 (mean.x,assEqu.diff,conHeaCoo.I.y,thermalZoneTwoElements.intWallRC.thermCapInt[1].T,thermalZoneTwoElements.extWallRC.thermCapExt[1].T) * Number of discrete variables: 21 (not1.y,$whenCondition7,$whenCondition6,$whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,cha.u,thr.y,timer.entryTime,mean.y_last,assEqu.nFai,assEqu.satisfied,hysteresis.y,setTemp.nextTimeEventScaled,setTemp.nextTimeEvent,reference.nextTimeEventScaled,reference.nextTimeEvent,intGai.nextTimeEventScaled,intGai.nextTimeEvent) * Number of discrete states: 11 (intGai.nextTimeEvent,reference.nextTimeEvent,setTemp.nextTimeEvent,mean.x,assEqu.satisfied,assEqu.nFai,setTemp.nextTimeEventScaled,reference.nextTimeEventScaled,intGai.nextTimeEventScaled,hysteresis.y,cha.u) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (52): * Single equations (assignments): 41 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 9 * 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 {(1,3,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(3,27)} Notification: Performance of Backend phase and start with SimCode phase: time 0.002926/0.6405, allocations: 2.638 MB / 1.191 GB, free: 10.33 MB / 1.026 GB Notification: Performance of simCode: created initialization part: time 0.00163/0.6422, allocations: 1.023 MB / 1.192 GB, free: 9.887 MB / 1.026 GB Notification: Performance of simCode: created event and clocks part: time 2.746e-06/0.6422, allocations: 2.812 kB / 1.192 GB, free: 9.887 MB / 1.026 GB Notification: Performance of simCode: created simulation system equations: time 0.000846/0.643, allocations: 0.7506 MB / 1.193 GB, free: 9.469 MB / 1.026 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0009342/0.644, allocations: 310.7 kB / 1.193 GB, free: 9.336 MB / 1.026 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01255/0.6565, allocations: 14.04 MB / 1.207 GB, free: 1.949 MB / 1.026 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006988/0.6572, allocations: 0.9613 MB / 1.208 GB, free: 1.188 MB / 1.026 GB Notification: Performance of simCode: alias equations: time 0.000295/0.6575, allocations: 139.2 kB / 1.208 GB, free: 1.047 MB / 1.026 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0006286/0.6581, allocations: 0.7581 MB / 1.209 GB, free: 296 kB / 1.026 GB Notification: Performance of SimCode: time 1.042e-06/0.6581, allocations: 4 kB / 1.209 GB, free: 292 kB / 1.026 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.04454/0.7027, allocations: 37.27 MB / 1.245 GB, free: 11.4 MB / 1.073 GB Notification: Performance of buildModelFMU: Generate platform static: time 9.445/10.15, allocations: 11.61 kB / 1.245 GB, free: 11.4 MB / 1.073 GB " [Timeout remaining time 290] (rm -f Buildings_12_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase11.pipe ; mkfifo Buildings_12_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase11.pipe ; head -c 1048576 < Buildings_12_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase11.pipe >> ../files/Buildings_12_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase11.sim & python3 -m fmpy simulate --output-file Buildings_12_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase11_res.csv --start-time 0 --stop-time 5.184e+06 --timeout 400 --relative-tolerance 1e-07 --interface-type ModelExchange --solver CVode --output-interval 60 Buildings_12_Buildings_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase11.fmu > Buildings_12_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase11.pipe 2>&1) [Timeout 420.0] [Calling os._exit(0), Time elapsed: 14.435370300896466] Failed to read output from testmodel.py, exit status != 0: 10.281715700402856 10.291655352 9.696449912 Calling exit ...