Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.Fluid.Sources.Examples.Outside.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.Fluid.Sources.Examples.Outside,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Fluid.Sources.Examples.Outside") translateModel(Buildings.Fluid.Sources.Examples.Outside,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Fluid.Sources.Examples.Outside") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0007731/0.0007732, allocations: 97.56 kB / 15.36 MB, free: 0.7344 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00528/0.00528, allocations: 171.2 kB / 16.27 MB, free: 6.648 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.519/1.519, allocations: 205.4 MB / 222.4 MB, free: 5.559 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 1.566/1.566, allocations: 252 MB / 0.5105 GB, free: 4.652 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 0.0005245/0.0005244, allocations: 12.52 kB / 0.6249 GB, free: 0.7188 MB / 0.5137 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.527/0.5275, allocations: 106.3 MB / 0.7287 GB, free: 11.28 MB / 0.545 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Sources.Examples.Outside): time 0.1812/0.7088, allocations: 171.3 MB / 0.896 GB, free: 15.34 MB / 0.7169 GB Notification: Performance of NFInst.instExpressions: time 0.01481/0.7237, allocations: 10.46 MB / 0.9062 GB, free: 4.84 MB / 0.7169 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0013/0.725, allocations: 31.81 kB / 0.9062 GB, free: 4.809 MB / 0.7169 GB Notification: Performance of NFTyping.typeComponents: time 0.001317/0.7264, allocations: 321.9 kB / 0.9066 GB, free: 4.492 MB / 0.7169 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 0.003029/0.7294, allocations: 0.8708 MB / 0.9074 GB, free: 3.621 MB / 0.7169 GB Notification: Performance of NFTyping.typeClassSections: time 0.005147/0.7346, allocations: 1.493 MB / 0.9089 GB, free: 2.137 MB / 0.7169 GB Notification: Performance of NFFlatten.flatten: time 0.4559/1.19, allocations: 2.522 MB / 0.9113 GB, free: 3.23 MB / 0.7169 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002396/1.193, allocations: 1.209 MB / 0.9125 GB, free: 3.082 MB / 0.7169 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003747/1.197, allocations: 1.012 MB / 0.9135 GB, free: 3.07 MB / 0.7169 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001186/1.198, allocations: 0.6372 MB / 0.9141 GB, free: 3.066 MB / 0.7169 GB Notification: Performance of NFPackage.collectConstants: time 0.0001713/1.198, allocations: 39.94 kB / 0.9142 GB, free: 3.066 MB / 0.7169 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002967/1.201, allocations: 1.345 MB / 0.9155 GB, free: 3.066 MB / 0.7169 GB Notification: Performance of NFScalarize.scalarize: time 0.0004423/1.201, allocations: 313.7 kB / 0.9158 GB, free: 3.066 MB / 0.7169 GB Notification: Performance of NFVerifyModel.verify: time 0.001093/1.203, allocations: 0.6022 MB / 0.9164 GB, free: 19.04 MB / 0.7325 GB Notification: Performance of NFConvertDAE.convert: time 0.004594/1.207, allocations: 2.27 MB / 0.9186 GB, free: 18.98 MB / 0.7325 GB Notification: Performance of FrontEnd - DAE generated: time 5.39e-06/1.207, allocations: 0 / 0.9186 GB, free: 18.98 MB / 0.7325 GB Notification: Performance of FrontEnd: time 2.505e-06/1.207, allocations: 0 / 0.9186 GB, free: 18.98 MB / 0.7325 GB Notification: Performance of Transformations before backend: time 4.941e-05/1.207, allocations: 4.875 kB / 0.9186 GB, free: 18.97 MB / 0.7325 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 281 * Number of variables: 281 Notification: Performance of Generate backend data structure: time 0.003498/1.211, allocations: 1.472 MB / 0.92 GB, free: 18.11 MB / 0.7325 GB Notification: Performance of prepare preOptimizeDAE: time 5.085e-05/1.211, allocations: 9.062 kB / 0.92 GB, free: 18.11 MB / 0.7325 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.00235/1.213, allocations: 356.5 kB / 0.9204 GB, free: 18.03 MB / 0.7325 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001723/1.215, allocations: 0.9091 MB / 0.9213 GB, free: 17.69 MB / 0.7325 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001068/1.215, allocations: 82.25 kB / 0.9213 GB, free: 17.68 MB / 0.7325 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001847/1.215, allocations: 118.4 kB / 0.9214 GB, free: 17.68 MB / 0.7325 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002783/1.218, allocations: 1.233 MB / 0.9226 GB, free: 17.5 MB / 0.7325 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.386e-05/1.218, allocations: 0 / 0.9226 GB, free: 17.5 MB / 0.7325 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001111/1.218, allocations: 50.72 kB / 0.9227 GB, free: 17.5 MB / 0.7325 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.021e-05/1.218, allocations: 26.62 kB / 0.9227 GB, free: 17.5 MB / 0.7325 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002276/1.221, allocations: 1.402 MB / 0.9241 GB, free: 17.48 MB / 0.7325 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 0.006176/1.227, allocations: 3.705 MB / 0.9277 GB, free: 16.22 MB / 0.7325 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001734/1.228, allocations: 1.127 MB / 0.9288 GB, free: 16.08 MB / 0.7325 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0006423/1.229, allocations: 420.9 kB / 0.9292 GB, free: 16.07 MB / 0.7325 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0007707/1.23, allocations: 443 kB / 0.9296 GB, free: 15.7 MB / 0.7325 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0009927/1.231, allocations: 0.5971 MB / 0.9302 GB, free: 15.62 MB / 0.7325 GB Notification: Performance of pre-optimization done (n=97): time 2.775e-06/1.231, allocations: 0 / 0.9302 GB, free: 15.62 MB / 0.7325 GB Notification: Performance of matching and sorting (n=97): time 0.003836/1.235, allocations: 1.494 MB / 0.9317 GB, free: 15.4 MB / 0.7325 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001087/1.235, allocations: 194.1 kB / 0.9319 GB, free: 15.18 MB / 0.7325 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.00119/1.236, allocations: 0.8289 MB / 0.9327 GB, free: 15.03 MB / 0.7325 GB Notification: Performance of collectPreVariables (initialization): time 0.0001269/1.236, allocations: 42.73 kB / 0.9327 GB, free: 15 MB / 0.7325 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004219/1.237, allocations: 0.4958 MB / 0.9332 GB, free: 14.8 MB / 0.7325 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002732/1.237, allocations: 329.9 kB / 0.9335 GB, free: 14.59 MB / 0.7325 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001209/1.237, allocations: 84.92 kB / 0.9336 GB, free: 14.57 MB / 0.7325 GB Notification: Performance of setup shared object (initialization): time 0.0001432/1.237, allocations: 344.4 kB / 0.9339 GB, free: 14.27 MB / 0.7325 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0006485/1.238, allocations: 346.2 kB / 0.9342 GB, free: 14.26 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0007785/1.239, allocations: 486.8 kB / 0.9347 GB, free: 14.19 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001345/1.24, allocations: 0.8187 MB / 0.9355 GB, free: 14.12 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.07e-06/1.24, allocations: 7.938 kB / 0.9355 GB, free: 14.11 MB / 0.7325 GB Notification: Performance of matching and sorting (n=118) (initialization): time 0.00227/1.242, allocations: 1.092 MB / 0.9366 GB, free: 13.99 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 2.817e-05/1.242, allocations: 4.906 kB / 0.9366 GB, free: 13.99 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.148e-05/1.242, allocations: 2.875 kB / 0.9366 GB, free: 13.99 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0006051/1.243, allocations: 82.22 kB / 0.9367 GB, free: 13.98 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0009133/1.244, allocations: 220.4 kB / 0.9369 GB, free: 13.98 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001933/1.246, allocations: 1.537 MB / 0.9384 GB, free: 12.67 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001178/1.247, allocations: 127.4 kB / 0.9385 GB, free: 12.62 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 9.285e-05/1.247, allocations: 46.41 kB / 0.9385 GB, free: 12.62 MB / 0.7325 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 6 * 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 (116): * Single equations (assignments): 115 * 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 {(1,2)} Notification: Performance of prepare postOptimizeDAE: time 0.0007313/1.248, allocations: 318.2 kB / 0.9389 GB, free: 12.5 MB / 0.7325 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002011/1.248, allocations: 107.1 kB / 0.939 GB, free: 12.45 MB / 0.7325 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002815/1.251, allocations: 1.405 MB / 0.9403 GB, free: 12.28 MB / 0.7325 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.093e-05/1.251, allocations: 11.38 kB / 0.9403 GB, free: 12.28 MB / 0.7325 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.938e-06/1.251, allocations: 0 / 0.9403 GB, free: 12.28 MB / 0.7325 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.33e-05/1.251, allocations: 3.281 kB / 0.9403 GB, free: 12.28 MB / 0.7325 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 0.004393/1.255, allocations: 2.669 MB / 0.9429 GB, free: 11.69 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.851e-06/1.255, allocations: 3.562 kB / 0.9429 GB, free: 11.69 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0008262/1.256, allocations: 195.5 kB / 0.9431 GB, free: 11.69 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0005088/1.257, allocations: 92.61 kB / 0.9432 GB, free: 11.68 MB / 0.7325 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.85e-05/1.257, allocations: 29.47 kB / 0.9433 GB, free: 11.68 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001739/1.259, allocations: 1.559 MB / 0.9448 GB, free: 10.38 MB / 0.7325 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.959e-06/1.259, allocations: 7.344 kB / 0.9448 GB, free: 10.38 MB / 0.7325 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00314/1.262, allocations: 1.727 MB / 0.9465 GB, free: 10.08 MB / 0.7325 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0007271/1.262, allocations: 343.6 kB / 0.9468 GB, free: 9.91 MB / 0.7325 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001549/1.263, allocations: 26.27 kB / 0.9468 GB, free: 9.91 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000877/1.264, allocations: 92.75 kB / 0.9469 GB, free: 9.902 MB / 0.7325 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001525/1.264, allocations: 76.77 kB / 0.947 GB, free: 9.902 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.874e-05/1.264, allocations: 46.95 kB / 0.947 GB, free: 9.898 MB / 0.7325 GB Notification: Performance of sorting global known variables: time 0.0008065/1.265, allocations: 0.587 MB / 0.9476 GB, free: 9.789 MB / 0.7325 GB Notification: Performance of sort global known variables: time 2.61e-07/1.265, allocations: 0 / 0.9476 GB, free: 9.789 MB / 0.7325 GB Notification: Performance of remove unused functions: time 0.00128/1.266, allocations: 402.9 kB / 0.948 GB, free: 9.73 MB / 0.7325 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 7 * Number of states: 3 (senTem.T,senRelHum.phi,senMasFra.X) * 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 (105): * Single equations (assignments): 102 * 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 0.00157/1.267, allocations: 0.6718 MB / 0.9486 GB, free: 9.5 MB / 0.7325 GB Notification: Performance of simCode: created initialization part: time 0.001886/1.269, allocations: 1.014 MB / 0.9496 GB, free: 9.363 MB / 0.7325 GB Notification: Performance of simCode: created event and clocks part: time 3.908e-06/1.269, allocations: 7 kB / 0.9496 GB, free: 9.359 MB / 0.7325 GB Notification: Performance of simCode: created simulation system equations: time 0.001001/1.27, allocations: 0.6126 MB / 0.9502 GB, free: 9.242 MB / 0.7325 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002583/1.273, allocations: 475.4 kB / 0.9507 GB, free: 9.207 MB / 0.7325 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.005572/1.279, allocations: 3.003 MB / 0.9536 GB, free: 7.711 MB / 0.7325 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0007332/1.279, allocations: 1.141 MB / 0.9547 GB, free: 6.988 MB / 0.7325 GB Notification: Performance of simCode: alias equations: time 0.001602/1.281, allocations: 358.9 kB / 0.9551 GB, free: 6.883 MB / 0.7325 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003289/1.281, allocations: 126.7 kB / 0.9552 GB, free: 6.875 MB / 0.7325 GB Notification: Performance of SimCode: time 9.11e-07/1.281, allocations: 4 kB / 0.9552 GB, free: 6.871 MB / 0.7325 GB Notification: Performance of Templates: time 0.03586/1.317, allocations: 21.13 MB / 0.9758 GB, free: 15.93 MB / 0.7481 GB make -j1 -f Buildings_maint.7.0.x_Buildings.Fluid.Sources.Examples.Outside.makefile Environment - environmentSimulation: (rm -f Buildings_maint.7.0.x_Buildings.Fluid.Sources.Examples.Outside.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.Fluid.Sources.Examples.Outside.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.Fluid.Sources.Examples.Outside.pipe >> ../files/Buildings_maint.7.0.x_Buildings.Fluid.Sources.Examples.Outside.sim & ./Buildings_maint.7.0.x_Buildings.Fluid.Sources.Examples.Outside -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.7.0.x_Buildings.Fluid.Sources.Examples.Outside.pipe 2>&1) Environment - environmentSimulation: