Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.HeatTransfer.Windows.BaseClasses.Examples.TransmittedRadiation.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo", uses=false) Using package Buildings with version 7.0.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo) Using package Modelica with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo) Using package Complex with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo) Using package ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Running command: translateModel(Buildings.HeatTransfer.Windows.BaseClasses.Examples.TransmittedRadiation,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.HeatTransfer.Windows.BaseClasses.Examples.TransmittedRadiation") translateModel(Buildings.HeatTransfer.Windows.BaseClasses.Examples.TransmittedRadiation,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.HeatTransfer.Windows.BaseClasses.Examples.TransmittedRadiation") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001012/0.001012, allocations: 90.83 kB / 15.36 MB, free: 0.7383 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.005946/0.005946, allocations: 172.6 kB / 16.26 MB, free: 6.613 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.332/1.332, allocations: 205.4 MB / 222.4 MB, free: 5.57 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo): time 1.489/1.489, allocations: 252 MB / 0.5105 GB, free: 4.602 MB / 414.1 MB Notification: Modelica requested package Complex of version 3.2.3. Complex 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Modelica requested package ModelicaServices of version 3.2.3. ModelicaServices 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.0004942/0.000494, allocations: 12.56 kB / 0.6249 GB, free: 0.6875 MB / 0.5137 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.427/0.4275, allocations: 106.3 MB / 0.7287 GB, free: 11.24 MB / 0.545 GB Notification: Performance of NFInst.instantiate(Buildings.HeatTransfer.Windows.BaseClasses.Examples.TransmittedRadiation): time 0.005356/0.4329, allocations: 5.03 MB / 0.7336 GB, free: 6.184 MB / 0.545 GB Notification: Performance of NFInst.instExpressions: time 0.1555/0.5885, allocations: 150.5 MB / 0.8806 GB, free: 15.15 MB / 0.7012 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001161/0.5897, allocations: 23.81 kB / 0.8806 GB, free: 15.12 MB / 0.7012 GB Notification: Performance of NFTyping.typeComponents: time 0.00557/0.5953, allocations: 1.612 MB / 0.8822 GB, free: 13.51 MB / 0.7012 GB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/BoundaryConditions/WeatherData/BaseClasses/getHeaderElementTMY3.mo:2:1-105:25:writable] Warning: Pure function ‘Buildings.BoundaryConditions.WeatherData.BaseClasses.getHeaderElementTMY3‘ contains a call to impure function ‘Modelica.Utilities.Streams.readLine‘. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/BoundaryConditions/WeatherData/BaseClasses/getLongitudeTMY3.mo:2:1-48:21:writable] Warning: Pure function ‘Buildings.BoundaryConditions.WeatherData.BaseClasses.getLongitudeTMY3‘ contains a call to impure function ‘Buildings.BoundaryConditions.WeatherData.BaseClasses.getHeaderElementTMY3‘. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/BoundaryConditions/WeatherData/BaseClasses/getLatitudeTMY3.mo:2:1-48:20:writable] Warning: Pure function ‘Buildings.BoundaryConditions.WeatherData.BaseClasses.getLatitudeTMY3‘ contains a call to impure function ‘Buildings.BoundaryConditions.WeatherData.BaseClasses.getHeaderElementTMY3‘. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/BoundaryConditions/WeatherData/BaseClasses/getTimeZoneTMY3.mo:2:1-47:20:writable] Warning: Pure function ‘Buildings.BoundaryConditions.WeatherData.BaseClasses.getTimeZoneTMY3‘ contains a call to impure function ‘Buildings.BoundaryConditions.WeatherData.BaseClasses.getHeaderElementTMY3‘. Notification: Performance of NFTyping.typeBindings: time 0.002625/0.5979, allocations: 0.6092 MB / 0.8828 GB, free: 12.9 MB / 0.7012 GB Notification: Performance of NFTyping.typeClassSections: time 0.002429/0.6003, allocations: 0.7884 MB / 0.8835 GB, free: 12.12 MB / 0.7012 GB Notification: Performance of NFFlatten.flatten: time 0.00265/0.603, allocations: 2.26 MB / 0.8857 GB, free: 9.848 MB / 0.7012 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001353/0.6044, allocations: 0.9054 MB / 0.8866 GB, free: 8.898 MB / 0.7012 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001039/0.6054, allocations: 0.5792 MB / 0.8872 GB, free: 8.316 MB / 0.7012 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001143/0.6066, allocations: 0.645 MB / 0.8878 GB, free: 7.668 MB / 0.7012 GB Notification: Performance of NFPackage.collectConstants: time 0.0002472/0.6068, allocations: 36 kB / 0.8879 GB, free: 7.633 MB / 0.7012 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003463/0.6103, allocations: 1.907 MB / 0.8897 GB, free: 5.723 MB / 0.7012 GB Notification: Performance of NFScalarize.scalarize: time 0.0009294/0.6112, allocations: 0.9589 MB / 0.8907 GB, free: 4.762 MB / 0.7012 GB Notification: Performance of NFVerifyModel.verify: time 0.0009331/0.6122, allocations: 0.6652 MB / 0.8913 GB, free: 4.086 MB / 0.7012 GB Notification: Performance of NFConvertDAE.convert: time 0.005231/0.6174, allocations: 3.236 MB / 0.8945 GB, free: 0.8398 MB / 0.7012 GB Notification: Performance of FrontEnd - DAE generated: time 3.917e-06/0.6175, allocations: 0 / 0.8945 GB, free: 0.8398 MB / 0.7012 GB Notification: Performance of FrontEnd: time 1.452e-06/0.6175, allocations: 0 / 0.8945 GB, free: 0.8398 MB / 0.7012 GB Notification: Performance of Transformations before backend: time 4.198e-05/0.6175, allocations: 0 / 0.8945 GB, free: 0.8398 MB / 0.7012 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 300 * Number of variables: 300 Notification: Performance of Generate backend data structure: time 0.003211/0.6207, allocations: 1.85 MB / 0.8963 GB, free: 14.93 MB / 0.7169 GB Notification: Performance of prepare preOptimizeDAE: time 3.778e-05/0.6208, allocations: 12.03 kB / 0.8963 GB, free: 14.92 MB / 0.7169 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0009726/0.6218, allocations: 262.5 kB / 0.8965 GB, free: 14.66 MB / 0.7169 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002966/0.6247, allocations: 2.861 MB / 0.8993 GB, free: 11.74 MB / 0.7169 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 7.51e-05/0.6248, allocations: 94.36 kB / 0.8994 GB, free: 11.65 MB / 0.7169 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001556/0.625, allocations: 120 kB / 0.8995 GB, free: 11.53 MB / 0.7169 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002027/0.627, allocations: 1.256 MB / 0.9008 GB, free: 10.21 MB / 0.7169 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.105e-05/0.6271, allocations: 4 kB / 0.9008 GB, free: 10.21 MB / 0.7169 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001082/0.6272, allocations: 48 kB / 0.9008 GB, free: 10.16 MB / 0.7169 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.241e-05/0.6272, allocations: 28 kB / 0.9008 GB, free: 10.13 MB / 0.7169 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002204/0.6294, allocations: 1.425 MB / 0.9022 GB, free: 8.699 MB / 0.7169 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.006461/0.6359, allocations: 4.829 MB / 0.9069 GB, free: 3.801 MB / 0.7169 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001785/0.6377, allocations: 1.006 MB / 0.9079 GB, free: 2.785 MB / 0.7169 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.000658/0.6384, allocations: 411.6 kB / 0.9083 GB, free: 2.383 MB / 0.7169 GB Notification: Performance of preOpt evalFunc (simulation): time 9.438e-05/0.6385, allocations: 37.02 kB / 0.9084 GB, free: 2.348 MB / 0.7169 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0009304/0.6394, allocations: 0.5592 MB / 0.9089 GB, free: 1.77 MB / 0.7169 GB Notification: Performance of pre-optimization done (n=88): time 2.535e-06/0.6394, allocations: 0 / 0.9089 GB, free: 1.77 MB / 0.7169 GB Notification: Performance of matching and sorting (n=88): time 0.003481/0.6429, allocations: 1.496 MB / 0.9104 GB, free: 252 kB / 0.7169 GB Notification: Performance of inlineWhenForInitialization (initialization): time 9.722e-05/0.643, allocations: 196.9 kB / 0.9105 GB, free: 8 kB / 0.7169 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.389/1.032, allocations: 4.021 MB / 0.9145 GB, free: 179 MB / 0.7169 GB Notification: Performance of collectPreVariables (initialization): time 0.0002573/1.032, allocations: 43.56 kB / 0.9145 GB, free: 179 MB / 0.7169 GB Notification: Performance of collectInitialEqns (initialization): time 0.0005754/1.033, allocations: 0.6219 MB / 0.9151 GB, free: 178.6 MB / 0.7169 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002932/1.033, allocations: 295.6 kB / 0.9154 GB, free: 178.4 MB / 0.7169 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000786/1.034, allocations: 0.7789 MB / 0.9162 GB, free: 178.1 MB / 0.7169 GB Notification: Performance of setup shared object (initialization): time 4.71e-05/1.034, allocations: 302.4 kB / 0.9165 GB, free: 177.8 MB / 0.7169 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.006947/1.041, allocations: 6.297 MB / 0.9226 GB, free: 175.9 MB / 0.7169 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.005328/1.046, allocations: 6.532 MB / 0.929 GB, free: 171.2 MB / 0.7169 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.005978/1.052, allocations: 7.404 MB / 0.9362 GB, free: 164.2 MB / 0.7169 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 8.095e-06/1.052, allocations: 3.75 kB / 0.9362 GB, free: 164.2 MB / 0.7169 GB Notification: Performance of matching and sorting (n=376) (initialization): time 0.01134/1.064, allocations: 14.06 MB / 0.9499 GB, free: 150.8 MB / 0.7169 GB Notification: Performance of prepare postOptimizeDAE: time 2.55e-05/1.064, allocations: 9.406 kB / 0.95 GB, free: 150.8 MB / 0.7169 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.557e-05/1.064, allocations: 4.734 kB / 0.95 GB, free: 150.8 MB / 0.7169 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005994/1.065, allocations: 83.41 kB / 0.95 GB, free: 150.7 MB / 0.7169 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0009099/1.065, allocations: 228.6 kB / 0.9503 GB, free: 150.5 MB / 0.7169 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001674/1.067, allocations: 1.524 MB / 0.9517 GB, free: 148.8 MB / 0.7169 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001067/1.068, allocations: 128.7 kB / 0.9519 GB, free: 148.7 MB / 0.7169 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001272/1.068, allocations: 53.38 kB / 0.9519 GB, free: 148.6 MB / 0.7169 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 5 * Number of states: 0 () * Number of discrete variables: 8 (weaDat.conTim.canRepeatWeatherFile,weaDat.conTimMin.canRepeatWeatherFile,weaDat.conTim.tNext,$PRE.weaDat.conTim.tNext,weaDat.conTimMin.tNext,$PRE.weaDat.conTimMin.tNext,$whenCondition1,$whenCondition2) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (143): * Single equations (assignments): 130 * Array equations: 12 * 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 {(1,2)} Notification: Performance of prepare postOptimizeDAE: time 0.0007666/1.069, allocations: 0.6008 MB / 0.9525 GB, free: 148 MB / 0.7169 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002155/1.069, allocations: 126.4 kB / 0.9526 GB, free: 147.9 MB / 0.7169 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002545/1.072, allocations: 1.335 MB / 0.9539 GB, free: 146.6 MB / 0.7169 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.706e-06/1.072, allocations: 19.92 kB / 0.9539 GB, free: 146.6 MB / 0.7169 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.685e-06/1.072, allocations: 0 / 0.9539 GB, free: 146.6 MB / 0.7169 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.037e-05/1.072, allocations: 3.984 kB / 0.954 GB, free: 146.6 MB / 0.7169 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003472/1.075, allocations: 2.538 MB / 0.9564 GB, free: 144 MB / 0.7169 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.829e-06/1.075, allocations: 2.156 kB / 0.9564 GB, free: 144 MB / 0.7169 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006304/1.076, allocations: 179.7 kB / 0.9566 GB, free: 143.8 MB / 0.7169 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004859/1.077, allocations: 84.64 kB / 0.9567 GB, free: 143.8 MB / 0.7169 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.975e-05/1.077, allocations: 27.98 kB / 0.9567 GB, free: 143.7 MB / 0.7169 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001375/1.078, allocations: 1.552 MB / 0.9582 GB, free: 142 MB / 0.7169 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.753e-06/1.078, allocations: 4 kB / 0.9582 GB, free: 142 MB / 0.7169 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001826/1.08, allocations: 1.212 MB / 0.9594 GB, free: 140.8 MB / 0.7169 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004122/1.08, allocations: 367 kB / 0.9598 GB, free: 140.4 MB / 0.7169 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001552/1.08, allocations: 20 kB / 0.9598 GB, free: 140.4 MB / 0.7169 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0006709/1.081, allocations: 70.78 kB / 0.9599 GB, free: 140.3 MB / 0.7169 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001411/1.081, allocations: 68.91 kB / 0.9599 GB, free: 140.3 MB / 0.7169 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.307e-05/1.081, allocations: 43.97 kB / 0.96 GB, free: 140.2 MB / 0.7169 GB Notification: Performance of sorting global known variables: time 0.001713/1.083, allocations: 2.581 MB / 0.9625 GB, free: 137.6 MB / 0.7169 GB Notification: Performance of sort global known variables: time 1.312e-06/1.083, allocations: 4 kB / 0.9625 GB, free: 137.6 MB / 0.7169 GB Notification: Performance of remove unused functions: time 0.001738/1.085, allocations: 0.9387 MB / 0.9634 GB, free: 136.8 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: 4 ($whenCondition2,$whenCondition1,weaDat.conTimMin.tNext,weaDat.conTim.tNext) * Number of discrete states: 2 (weaDat.conTim.tNext,weaDat.conTimMin.tNext) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (102): * Single equations (assignments): 99 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * 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): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,3)} Notification: Performance of Backend phase and start with SimCode phase: time 0.002421/1.087, allocations: 0.906 MB / 0.9643 GB, free: 136.2 MB / 0.7169 GB Notification: Performance of simCode: created initialization part: time 0.006619/1.094, allocations: 8.274 MB / 0.9724 GB, free: 127.9 MB / 0.7169 GB Notification: Performance of simCode: created event and clocks part: time 7.304e-06/1.094, allocations: 8.25 kB / 0.9724 GB, free: 127.9 MB / 0.7169 GB Notification: Performance of simCode: created simulation system equations: time 0.00105/1.095, allocations: 0.607 MB / 0.973 GB, free: 127.3 MB / 0.7169 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001785/1.097, allocations: 296.8 kB / 0.9732 GB, free: 127 MB / 0.7169 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.007164/1.104, allocations: 5.625 MB / 0.9787 GB, free: 121.3 MB / 0.7169 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001205/1.105, allocations: 1.677 MB / 0.9804 GB, free: 119.6 MB / 0.7169 GB Notification: Performance of simCode: alias equations: time 0.001185/1.106, allocations: 381.4 kB / 0.9807 GB, free: 119.2 MB / 0.7169 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003923/1.107, allocations: 135.4 kB / 0.9809 GB, free: 119.1 MB / 0.7169 GB Notification: Performance of SimCode: time 1.142e-06/1.107, allocations: 0 / 0.9809 GB, free: 119.1 MB / 0.7169 GB Notification: Performance of Templates: time 0.03859/1.145, allocations: 25.18 MB / 1.005 GB, free: 94.09 MB / 0.7169 GB make -j1 -f Buildings_maint.7.0.x_Buildings.HeatTransfer.Windows.BaseClasses.Examples.TransmittedRadiation.makefile Environment - environmentSimulation: (rm -f Buildings_maint.7.0.x_Buildings.HeatTransfer.Windows.BaseClasses.Examples.TransmittedRadiation.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.HeatTransfer.Windows.BaseClasses.Examples.TransmittedRadiation.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.HeatTransfer.Windows.BaseClasses.Examples.TransmittedRadiation.pipe >> ../files/Buildings_maint.7.0.x_Buildings.HeatTransfer.Windows.BaseClasses.Examples.TransmittedRadiation.sim & ./Buildings_maint.7.0.x_Buildings.HeatTransfer.Windows.BaseClasses.Examples.TransmittedRadiation -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.7.0.x_Buildings.HeatTransfer.Windows.BaseClasses.Examples.TransmittedRadiation.pipe 2>&1) Environment - environmentSimulation: