Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.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.HeatExchangers.Validation.DryCoilEffectivenessNTU,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU")
translateModel(Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU")
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001237/0.001236, allocations: 100.3 kB / 15.05 MB, free: 1.105 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001411/0.001411, allocations: 177.3 kB / 15.95 MB, free: 216 kB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.625/1.625, allocations: 205.4 MB / 222.1 MB, free: 5.652 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 1.596/1.596, allocations: 251.9 MB / 0.51 GB, free: 4.84 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 0.0006008/0.0006009, allocations: 12 kB / 0.6241 GB, free: 1.195 MB / 0.5137 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.6143/0.6149, allocations: 106.3 MB / 0.728 GB, free: 11.59 MB / 0.545 GB
Notification: Performance of NFInst.instantiate(Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU): time 0.8446/1.46, allocations: 291.3 MB / 1.012 GB, free: 3.613 MB / 0.7169 GB
Notification: Performance of NFInst.instExpressions: time 0.04416/1.504, allocations: 29.06 MB / 1.041 GB, free: 11.97 MB / 0.7325 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.008421/1.512, allocations: 137 kB / 1.041 GB, free: 11.97 MB / 0.7325 GB
Notification: Performance of NFTyping.typeComponents: time 0.01047/1.523, allocations: 2.305 MB / 1.043 GB, free: 10.43 MB / 0.7325 GB
Notification: Performance of NFTyping.typeBindings: time 0.03104/1.554, allocations: 7.657 MB / 1.051 GB, free: 4.48 MB / 0.7325 GB
Notification: Performance of NFTyping.typeClassSections: time 0.01252/1.566, allocations: 3.24 MB / 1.054 GB, free: 2.309 MB / 0.7325 GB
Notification: Performance of NFFlatten.flatten: time 0.01907/1.585, allocations: 7.269 MB / 1.061 GB, free: 11.8 MB / 0.7481 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.008429/1.594, allocations: 3.454 MB / 1.064 GB, free: 8.395 MB / 0.7481 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.01605/1.61, allocations: 4.873 MB / 1.069 GB, free: 4.199 MB / 0.7481 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.007658/1.618, allocations: 2.872 MB / 1.072 GB, free: 1.453 MB / 0.7481 GB
Notification: Performance of NFPackage.collectConstants: time 0.001861/1.62, allocations: 212 kB / 1.072 GB, free: 1.246 MB / 0.7481 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.01244/1.632, allocations: 3.121 MB / 1.075 GB, free: 14.12 MB / 0.7637 GB
Notification: Performance of NFScalarize.scalarize: time 0.003364/1.636, allocations: 1.07 MB / 1.076 GB, free: 13.05 MB / 0.7637 GB
Notification: Performance of NFVerifyModel.verify: time 0.003767/1.639, allocations: 1.065 MB / 1.077 GB, free: 11.97 MB / 0.7637 GB
Notification: Performance of NFConvertDAE.convert: time 0.01262/1.652, allocations: 6.121 MB / 1.083 GB, free: 5.836 MB / 0.7637 GB
Notification: Performance of FrontEnd - DAE generated: time 4.298e-06/1.652, allocations: 0 / 1.083 GB, free: 5.836 MB / 0.7637 GB
Notification: Performance of FrontEnd: time 2.725e-06/1.652, allocations: 4 kB / 1.083 GB, free: 5.832 MB / 0.7637 GB
Notification: Performance of Transformations before backend: time 0.00027/1.652, allocations: 3.938 kB / 1.083 GB, free: 5.828 MB / 0.7637 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 822
 * Number of variables: 822
Notification: Performance of Generate backend data structure: time 0.01576/1.668, allocations: 5.25 MB / 1.088 GB, free: 0.4961 MB / 0.7637 GB
Notification: Performance of prepare preOptimizeDAE: time 4.89e-05/1.668, allocations: 12.03 kB / 1.088 GB, free: 496 kB / 0.7637 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01199/1.68, allocations: 2.222 MB / 1.091 GB, free: 14.25 MB / 0.7794 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.009525/1.69, allocations: 3.49 MB / 1.094 GB, free: 10.71 MB / 0.7794 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.003373/1.693, allocations: 0.9169 MB / 1.095 GB, free: 9.789 MB / 0.7794 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.001489/1.695, allocations: 356 kB / 1.095 GB, free: 9.441 MB / 0.7794 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.01227/1.707, allocations: 4.868 MB / 1.1 GB, free: 4.488 MB / 0.7794 GB
Notification: Performance of preOpt findStateOrder (simulation): time 5.596e-05/1.707, allocations: 0 / 1.1 GB, free: 4.488 MB / 0.7794 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0004227/1.707, allocations: 131.9 kB / 1.1 GB, free: 4.359 MB / 0.7794 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001642/1.708, allocations: 158.1 kB / 1.1 GB, free: 4.203 MB / 0.7794 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01524/1.723, allocations: 5.575 MB / 1.106 GB, free: 14.61 MB / 0.795 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 0.0395/1.762, allocations: 19.85 MB / 1.125 GB, free: 9.438 MB / 0.8106 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.01179/1.774, allocations: 4.122 MB / 1.129 GB, free: 5.312 MB / 0.8106 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0008101/1.775, allocations: 0.5228 MB / 1.13 GB, free: 4.699 MB / 0.8106 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.006653/1.782, allocations: 2.399 MB / 1.132 GB, free: 2.285 MB / 0.8106 GB
Notification: Performance of pre-optimization done (n=251): time 4.328e-06/1.782, allocations: 0 / 1.132 GB, free: 2.285 MB / 0.8106 GB
Notification: Performance of matching and sorting (n=251): time 0.01775/1.8, allocations: 6.112 MB / 1.138 GB, free: 12.16 MB / 0.8262 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001013/1.8, allocations: 103.1 kB / 1.138 GB, free: 12.04 MB / 0.8262 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.006183/1.806, allocations: 3.632 MB / 1.142 GB, free: 8.402 MB / 0.8262 GB
Notification: Performance of collectPreVariables (initialization): time 0.0009035/1.807, allocations: 89.7 kB / 1.142 GB, free: 8.309 MB / 0.8262 GB
Notification: Performance of collectInitialEqns (initialization): time 0.00215/1.809, allocations: 1.84 MB / 1.143 GB, free: 6.457 MB / 0.8262 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0009774/1.81, allocations: 0.8393 MB / 1.144 GB, free: 5.605 MB / 0.8262 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.000207/1.81, allocations: 68 kB / 1.144 GB, free: 5.539 MB / 0.8262 GB
Notification: Performance of setup shared object (initialization): time 0.0002426/1.81, allocations: 428.5 kB / 1.145 GB, free: 5.113 MB / 0.8262 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.005432/1.816, allocations: 2.017 MB / 1.147 GB, free: 3.094 MB / 0.8262 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.006255/1.822, allocations: 2.776 MB / 1.149 GB, free: 48 kB / 0.8262 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.006064/1.828, allocations: 2.162 MB / 1.151 GB, free: 13.86 MB / 0.8419 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.59e-05/1.828, allocations: 0 / 1.151 GB, free: 13.86 MB / 0.8419 GB
Notification: Performance of matching and sorting (n=404) (initialization): time 0.01437/1.843, allocations: 5.242 MB / 1.157 GB, free: 8.574 MB / 0.8419 GB
Notification: Performance of prepare postOptimizeDAE: time 0.00226/1.845, allocations: 5.246 MB / 1.162 GB, free: 3.004 MB / 0.8419 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.899e-05/1.845, allocations: 8 kB / 1.162 GB, free: 2.996 MB / 0.8419 GB
Notification: Performance of postOpt tearingSystem (initialization): time 5.785e-05/1.845, allocations: 28 kB / 1.162 GB, free: 2.969 MB / 0.8419 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.007106/1.852, allocations: 1.26 MB / 1.163 GB, free: 1.707 MB / 0.8419 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003311/1.856, allocations: 5.97 MB / 1.169 GB, free: 11.5 MB / 0.8575 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00709/1.863, allocations: 0.8396 MB / 1.17 GB, free: 10.66 MB / 0.8575 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001018/1.864, allocations: 159.9 kB / 1.17 GB, free: 10.5 MB / 0.8575 GB
Notification: Performance of prepare postOptimizeDAE: time 1.644e-05/1.864, allocations: 4 kB / 1.17 GB, free: 10.5 MB / 0.8575 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.01379/1.878, allocations: 4.847 MB / 1.175 GB, free: 5.617 MB / 0.8575 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.856e-05/1.878, allocations: 12 kB / 1.175 GB, free: 5.605 MB / 0.8575 GB
Notification: Performance of postOpt tearingSystem (initialization): time 4.579e-05/1.878, allocations: 28 kB / 1.175 GB, free: 5.578 MB / 0.8575 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.005319/1.883, allocations: 1.104 MB / 1.176 GB, free: 4.473 MB / 0.8575 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 8.893e-05/1.883, allocations: 35.92 kB / 1.176 GB, free: 4.438 MB / 0.8575 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.006366/1.89, allocations: 0.8068 MB / 1.176 GB, free: 3.629 MB / 0.8575 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0006408/1.89, allocations: 148.4 kB / 1.177 GB, free: 3.484 MB / 0.8575 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 52
 * Number of states: 0 ()
 * Number of discrete variables: 15 (hexCroUnm.flowRegime,$whenCondition1,hexPar.flowRegime,hexCou.flowRegime,hexCroC1Mix.flowRegime,hexCroC1Unm.flowRegime,$PRE.trapezoid.T_start,trapezoid.T_start,$PRE.trapezoid.count,trapezoid.count,hexPar.flowRegime_nominal,hexCou.flowRegime_nominal,hexCroC1Mix.flowRegime_nominal,hexCroC1Unm.flowRegime_nominal,hexCroUnm.flowRegime_nominal)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (403):
 * Single equations (assignments): 392
 * Array equations: 0
 * Algorithm blocks: 1
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (linear and non-linear blocks): 10
 * Torn equation systems: 0
 * Mixed (continuous/discrete) equation systems: 0
Notification: Equation system details:
 * Constant Jacobian: 0
 * Linear Jacobian (size,density): 0
 * Non-linear Jacobian: 10 {1,1,1,1,1,1,1,1,1,1}
 * Without analytic Jacobian: 0
Notification: Performance of prepare postOptimizeDAE: time 0.002906/1.893, allocations: 0.9223 MB / 1.178 GB, free: 2.551 MB / 0.8575 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.001416/1.895, allocations: 442.6 kB / 1.178 GB, free: 2.113 MB / 0.8575 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01283/1.907, allocations: 4.883 MB / 1.183 GB, free: 13.2 MB / 0.8731 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.448e-05/1.908, allocations: 32 kB / 1.183 GB, free: 13.16 MB / 0.8731 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 1.471e-05/1.908, allocations: 0 / 1.183 GB, free: 13.16 MB / 0.8731 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.699e-05/1.908, allocations: 11.95 kB / 1.183 GB, free: 13.15 MB / 0.8731 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.02377/1.931, allocations: 9.331 MB / 1.192 GB, free: 3.637 MB / 0.8731 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.754e-05/1.931, allocations: 8 kB / 1.192 GB, free: 3.629 MB / 0.8731 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.00447/1.936, allocations: 0.8937 MB / 1.193 GB, free: 2.734 MB / 0.8731 GB
Notification: Performance of postOpt tearingSystem (simulation): time 3.061e-05/1.936, allocations: 16 kB / 1.193 GB, free: 2.719 MB / 0.8731 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0002522/1.936, allocations: 87.92 kB / 1.193 GB, free: 2.633 MB / 0.8731 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.003231/1.939, allocations: 5.943 MB / 1.199 GB, free: 12.46 MB / 0.8887 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.791e-06/1.94, allocations: 4 kB / 1.199 GB, free: 12.45 MB / 0.8887 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01298/1.952, allocations: 5.336 MB / 1.204 GB, free: 6.789 MB / 0.8887 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.003452/1.956, allocations: 1.01 MB / 1.205 GB, free: 5.754 MB / 0.8887 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0007918/1.957, allocations: 56 kB / 1.205 GB, free: 5.699 MB / 0.8887 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.004684/1.962, allocations: 0.6085 MB / 1.205 GB, free: 5.09 MB / 0.8887 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0004095/1.962, allocations: 205.7 kB / 1.206 GB, free: 4.887 MB / 0.8887 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0002966/1.962, allocations: 127.9 kB / 1.206 GB, free: 4.762 MB / 0.8887 GB
Notification: Performance of sorting global known variables: time 0.004172/1.966, allocations: 2.385 MB / 1.208 GB, free: 2.379 MB / 0.8887 GB
Notification: Performance of sort global known variables: time 4.51e-07/1.966, allocations: 0 / 1.208 GB, free: 2.379 MB / 0.8887 GB
Notification: Performance of remove unused functions: time 0.008092/1.975, allocations: 2.297 MB / 1.21 GB, free: 80 kB / 0.8887 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 20
 * Number of states: 0 ()
 * Number of discrete variables: 7 ($whenCondition1,hexPar.flowRegime,hexCou.flowRegime,hexCroC1Mix.flowRegime,hexCroC1Unm.flowRegime,trapezoid.T_start,trapezoid.count)
 * Number of discrete states: 1 (trapezoid.count)
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (283):
 * Single equations (assignments): 269
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 2
 * When equations: 2
 * If-equations: 0
 * Equation systems (linear and non-linear blocks): 10
 * Torn equation systems: 0
 * Mixed (continuous/discrete) equation systems: 0
Notification: Equation system details:
 * Constant Jacobian: 0
 * Linear Jacobian (size,density): 0
 * Non-linear Jacobian: 10 {1,1,1,1,1,1,1,1,1,1}
 * Without analytic Jacobian: 0
Notification: Performance of Backend phase and start with SimCode phase: time 0.001899/1.976, allocations: 0.7392 MB / 1.211 GB, free: 15.34 MB / 0.9044 GB
Notification: Performance of simCode: created initialization part: time 0.02125/1.998, allocations: 7.619 MB / 1.219 GB, free: 7.672 MB / 0.9044 GB
Notification: Performance of simCode: created event and clocks part: time 1.677e-05/1.998, allocations: 4 kB / 1.219 GB, free: 7.668 MB / 0.9044 GB
Notification: Performance of simCode: created simulation system equations: time 0.006576/2.004, allocations: 2.422 MB / 1.221 GB, free: 5.242 MB / 0.9044 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.01101/2.015, allocations: 1.994 MB / 1.223 GB, free: 3.27 MB / 0.9044 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02047/2.036, allocations: 9.484 MB / 1.232 GB, free: 9.684 MB / 0.92 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.002207/2.038, allocations: 2.477 MB / 1.235 GB, free: 7.172 MB / 0.92 GB
Notification: Performance of simCode: alias equations: time 0.007192/2.045, allocations: 1.243 MB / 1.236 GB, free: 5.973 MB / 0.92 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001236/2.047, allocations: 367.2 kB / 1.236 GB, free: 5.613 MB / 0.92 GB
Notification: Performance of SimCode: time 1.072e-06/2.047, allocations: 0 / 1.236 GB, free: 5.613 MB / 0.92 GB
Notification: Performance of Templates: time 0.5669/2.613, allocations: 81.56 MB / 1.316 GB, free: 374.6 MB / 0.9512 GB
make -j1 -f Buildings_maint.7.0.x_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.makefile
Environment - environmentSimulation:
(rm -f Buildings_maint.7.0.x_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.pipe >> ../files/Buildings_maint.7.0.x_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.sim & ./Buildings_maint.7.0.x_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU  -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.7.0.x_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.pipe 2>&1)
Environment - environmentSimulation: