Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr OpenIPSL_OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test.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/Modelica 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/OpenIPSL 3.0.1/package.mo", uses=false) Using package OpenIPSL with version 3.0.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.0.1/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 Modelica with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 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(OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="OpenIPSL_OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test") translateModel(OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="OpenIPSL_OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0009768/0.000977, allocations: 91.84 kB / 15.36 MB, free: 0.7383 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.416/1.416, allocations: 223.3 MB / 239.4 MB, free: 5.52 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001222/0.001222, allocations: 176.5 kB / 290.6 MB, free: 2.203 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.0.1/package.mo): time 0.4826/0.4826, allocations: 78.54 MB / 420.3 MB, free: 4.242 MB / 286.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0004084/0.0004087, allocations: 12 kB / 0.4887 GB, free: 6.07 MB / 366.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1634/0.1639, allocations: 69.36 MB / 0.5564 GB, free: 0.6602 MB / 430.1 MB Notification: Performance of NFInst.instantiate(OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test): time 0.2801/0.444, allocations: 6.872 MB / 0.5631 GB, free: 35.63 MB / 430.1 MB Notification: Performance of NFInst.instExpressions: time 0.005851/0.4499, allocations: 2.183 MB / 0.5652 GB, free: 34.79 MB / 430.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.002454/0.4524, allocations: 23.03 kB / 0.5653 GB, free: 34.78 MB / 430.1 MB Notification: Performance of NFTyping.typeComponents: time 0.001305/0.4537, allocations: 196.9 kB / 0.5655 GB, free: 34.7 MB / 430.1 MB Notification: Performance of NFTyping.typeBindings: time 0.003598/0.4574, allocations: 0.644 MB / 0.5661 GB, free: 34.39 MB / 430.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.002414/0.4598, allocations: 0.7268 MB / 0.5668 GB, free: 34.29 MB / 430.1 MB Notification: Performance of NFFlatten.flatten: time 0.002705/0.4625, allocations: 1.577 MB / 0.5683 GB, free: 33.93 MB / 430.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0009423/0.4635, allocations: 421.5 kB / 0.5687 GB, free: 33.84 MB / 430.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.001309/0.4648, allocations: 0.5695 MB / 0.5693 GB, free: 33.65 MB / 430.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.001277/0.4661, allocations: 0.7249 MB / 0.57 GB, free: 33.42 MB / 430.1 MB Notification: Performance of NFPackage.collectConstants: time 0.0004693/0.4666, allocations: 60.72 kB / 0.5701 GB, free: 33.42 MB / 430.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0007753/0.4674, allocations: 187.2 kB / 0.5702 GB, free: 33.41 MB / 430.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0002467/0.4676, allocations: 256.3 kB / 0.5705 GB, free: 33.32 MB / 430.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0006201/0.4682, allocations: 0.6662 MB / 0.5711 GB, free: 33.02 MB / 430.1 MB Notification: Performance of NFConvertDAE.convert: time 0.001518/0.4698, allocations: 1.706 MB / 0.5728 GB, free: 32.6 MB / 430.1 MB Notification: Performance of FrontEnd - DAE generated: time 3.477e-06/0.4698, allocations: 3.625 kB / 0.5728 GB, free: 32.6 MB / 430.1 MB Notification: Performance of FrontEnd: time 2.254e-06/0.4698, allocations: 0 / 0.5728 GB, free: 32.6 MB / 430.1 MB Notification: Performance of Transformations before backend: time 2.618e-05/0.4698, allocations: 0.75 kB / 0.5728 GB, free: 32.6 MB / 430.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 244 * Number of variables: 244 Notification: Performance of Generate backend data structure: time 0.007873/0.4777, allocations: 2.551 MB / 0.5753 GB, free: 31.67 MB / 430.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.909e-05/0.4778, allocations: 8.562 kB / 0.5753 GB, free: 31.67 MB / 430.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.005204/0.483, allocations: 0.8105 MB / 0.5761 GB, free: 31.56 MB / 430.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001552/0.4846, allocations: 0.9146 MB / 0.577 GB, free: 31.12 MB / 430.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002152/0.4848, allocations: 250.6 kB / 0.5772 GB, free: 30.95 MB / 430.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.000176/0.485, allocations: 100.7 kB / 0.5773 GB, free: 30.95 MB / 430.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002662/0.4877, allocations: 1.445 MB / 0.5787 GB, free: 30.76 MB / 430.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 2.328e-05/0.4877, allocations: 3.938 kB / 0.5787 GB, free: 30.75 MB / 430.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001308/0.4878, allocations: 40.12 kB / 0.5788 GB, free: 30.75 MB / 430.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.522e-05/0.4879, allocations: 26.25 kB / 0.5788 GB, free: 30.75 MB / 430.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002724/0.4906, allocations: 1.314 MB / 0.5801 GB, free: 30.71 MB / 430.1 MB 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 0.007311/0.4979, allocations: 4.546 MB / 0.5845 GB, free: 28.29 MB / 430.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.003253/0.5012, allocations: 1.857 MB / 0.5863 GB, free: 27.27 MB / 430.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.00185/0.5031, allocations: 0.907 MB / 0.5872 GB, free: 26.95 MB / 430.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0001122/0.5032, allocations: 20.81 kB / 0.5872 GB, free: 26.94 MB / 430.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.993e-05/0.5032, allocations: 46.34 kB / 0.5873 GB, free: 26.89 MB / 430.1 MB Notification: Performance of pre-optimization done (n=110): time 2.855e-06/0.5032, allocations: 4 kB / 0.5873 GB, free: 26.89 MB / 430.1 MB Notification: Performance of matching and sorting (n=110): time 0.03203/0.5353, allocations: 8.725 MB / 0.5958 GB, free: 25.35 MB / 430.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 8.018e-05/0.5354, allocations: 119.5 kB / 0.5959 GB, free: 25.22 MB / 430.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002451/0.5379, allocations: 1.06 MB / 0.597 GB, free: 24.79 MB / 430.1 MB Notification: Performance of collectPreVariables (initialization): time 0.0003347/0.5382, allocations: 46.62 kB / 0.597 GB, free: 24.74 MB / 430.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0005142/0.5388, allocations: 0.5816 MB / 0.5976 GB, free: 24.27 MB / 430.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0006114/0.5394, allocations: 397.8 kB / 0.5979 GB, free: 23.96 MB / 430.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004083/0.5398, allocations: 118.9 kB / 0.5981 GB, free: 23.9 MB / 430.1 MB Notification: Performance of setup shared object (initialization): time 0.0001276/0.54, allocations: 357.8 kB / 0.5984 GB, free: 23.57 MB / 430.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002114/0.5421, allocations: 0.8304 MB / 0.5992 GB, free: 23.29 MB / 430.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002269/0.5444, allocations: 1.043 MB / 0.6002 GB, free: 22.8 MB / 430.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.02134/0.5657, allocations: 5.482 MB / 0.6056 GB, free: 21.23 MB / 430.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.577e-05/0.5658, allocations: 1.906 kB / 0.6056 GB, free: 21.23 MB / 430.1 MB Notification: Performance of matching and sorting (n=176) (initialization): time 0.01791/0.5837, allocations: 5.545 MB / 0.611 GB, free: 19.98 MB / 430.1 MB Notification: Performance of prepare postOptimizeDAE: time 0.0001343/0.5839, allocations: 224.7 kB / 0.6112 GB, free: 19.72 MB / 430.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.035e-05/0.5839, allocations: 4.406 kB / 0.6112 GB, free: 19.72 MB / 430.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.007627/0.5915, allocations: 2.23 MB / 0.6134 GB, free: 18.94 MB / 430.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001149/0.5927, allocations: 226.7 kB / 0.6136 GB, free: 18.74 MB / 430.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.02305/0.6158, allocations: 10.29 MB / 0.6237 GB, free: 8.547 MB / 430.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001998/0.6178, allocations: 230.7 kB / 0.6239 GB, free: 8.32 MB / 430.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000271/0.6181, allocations: 55.92 kB / 0.6239 GB, free: 8.266 MB / 430.1 MB Notification: Performance of prepare postOptimizeDAE: time 1.283e-05/0.6181, allocations: 4 kB / 0.6239 GB, free: 8.262 MB / 430.1 MB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.01509/0.6332, allocations: 5.335 MB / 0.6291 GB, free: 2.918 MB / 430.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.344e-05/0.6333, allocations: 4 kB / 0.6292 GB, free: 2.914 MB / 430.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.006754/0.6401, allocations: 2.231 MB / 0.6313 GB, free: 0.6797 MB / 430.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001075/0.6412, allocations: 208.7 kB / 0.6315 GB, free: 488 kB / 430.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.02523/0.6664, allocations: 10.27 MB / 0.6416 GB, free: 6.082 MB / 446.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00204/0.6685, allocations: 210.9 kB / 0.6418 GB, free: 5.875 MB / 446.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002805/0.6688, allocations: 47.94 kB / 0.6418 GB, free: 5.828 MB / 446.1 MB Warning: Assuming fixed start value for the following 5 variables: tGTypeIV.integrator3.y:VARIABLE(flow=false start = tGTypeIV.integrator3.y_start fixed = true ) "Connector of Real output signal" type: Real tGTypeIV.integrator2.y:VARIABLE(flow=false start = tGTypeIV.integrator2.y_start fixed = true ) "Connector of Real output signal" type: Real tGTypeIV.integrator4.y:VARIABLE(flow=false start = tGTypeIV.integrator4.y_start fixed = true ) "Connector of Real output signal" type: Real tGTypeIV.integrator5.y:VARIABLE(flow=false start = tGTypeIV.integrator5.y_start fixed = true ) "Connector of Real output signal" type: Real tGTypeIV.integrator1.y:VARIABLE(flow=false start = tGTypeIV.integrator1.y_start fixed = true ) "Connector of Real output signal" type: Real Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 19 * Number of states: 0 () * Number of discrete variables: 5 (tGTypeIV.integrator1.local_reset,tGTypeIV.integrator5.local_reset,tGTypeIV.integrator4.local_reset,tGTypeIV.integrator2.local_reset,tGTypeIV.integrator3.local_reset) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (136): * Single equations (assignments): 135 * 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 {(25,16)} Notification: Performance of prepare postOptimizeDAE: time 0.001247/0.6701, allocations: 370 kB / 0.6422 GB, free: 5.461 MB / 446.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0005685/0.6707, allocations: 142.3 kB / 0.6423 GB, free: 5.32 MB / 446.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0159/0.6866, allocations: 5.171 MB / 0.6473 GB, free: 140 kB / 446.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.177e-05/0.6866, allocations: 9.969 kB / 0.6473 GB, free: 132 kB / 446.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.701e-06/0.6866, allocations: 7.938 kB / 0.6474 GB, free: 124 kB / 446.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.012e-05/0.6867, allocations: 7.969 kB / 0.6474 GB, free: 116 kB / 446.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01903/0.7057, allocations: 6.995 MB / 0.6542 GB, free: 8.984 MB / 462.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.009e-05/0.7058, allocations: 1.062 kB / 0.6542 GB, free: 8.984 MB / 462.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0008331/0.7066, allocations: 127.9 kB / 0.6543 GB, free: 8.859 MB / 462.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.007183/0.7138, allocations: 2.155 MB / 0.6564 GB, free: 6.703 MB / 462.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0003065/0.7142, allocations: 27.98 kB / 0.6565 GB, free: 6.676 MB / 462.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.02162/0.7358, allocations: 8.842 MB / 0.6651 GB, free: 13.69 MB / 478.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.288e-06/0.7359, allocations: 3.984 kB / 0.6651 GB, free: 13.69 MB / 478.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01834/0.7542, allocations: 6.255 MB / 0.6712 GB, free: 7.41 MB / 478.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0006046/0.7549, allocations: 227.1 kB / 0.6714 GB, free: 7.168 MB / 478.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000442/0.7553, allocations: 22.42 kB / 0.6714 GB, free: 7.148 MB / 478.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.00144/0.7568, allocations: 143.9 kB / 0.6716 GB, free: 7.008 MB / 478.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0007009/0.7575, allocations: 204.6 kB / 0.6718 GB, free: 6.809 MB / 478.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001263/0.7576, allocations: 31.98 kB / 0.6718 GB, free: 6.777 MB / 478.1 MB Notification: Performance of sorting global known variables: time 0.001126/0.7588, allocations: 0.6984 MB / 0.6725 GB, free: 6.074 MB / 478.1 MB Notification: Performance of sort global known variables: time 1.4e-07/0.7588, allocations: 0 / 0.6725 GB, free: 6.074 MB / 478.1 MB Notification: Performance of remove unused functions: time 0.002803/0.7616, allocations: 0.8034 MB / 0.6733 GB, free: 5.27 MB / 478.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 8 (gen.delta,gen.w,gen.e1q,tGTypeIV.integrator3.y,tGTypeIV.integrator2.y,tGTypeIV.integrator4.y,tGTypeIV.integrator5.y,tGTypeIV.integrator1.y) * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (73): * Single equations (assignments): 72 * 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 {(26,14)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0003146/0.7619, allocations: 137.9 kB / 0.6734 GB, free: 5.133 MB / 478.1 MB Notification: Performance of simCode: created initialization part: time 0.01338/0.7753, allocations: 4.933 MB / 0.6782 GB, free: 188 kB / 478.1 MB Notification: Performance of simCode: created event and clocks part: time 5.74e-06/0.7754, allocations: 0 / 0.6782 GB, free: 188 kB / 478.1 MB Notification: Performance of simCode: created simulation system equations: time 0.005236/0.7806, allocations: 1.841 MB / 0.68 GB, free: 14.34 MB / 494.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001493/0.7821, allocations: 145.4 kB / 0.6802 GB, free: 14.2 MB / 494.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004997/0.7871, allocations: 2.954 MB / 0.683 GB, free: 11.24 MB / 494.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0009345/0.7881, allocations: 1.185 MB / 0.6842 GB, free: 10.02 MB / 494.1 MB Notification: Performance of simCode: alias equations: time 0.0006258/0.7887, allocations: 133.4 kB / 0.6843 GB, free: 9.898 MB / 494.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.000258/0.789, allocations: 71.42 kB / 0.6844 GB, free: 9.828 MB / 494.1 MB Notification: Performance of SimCode: time 5.11e-07/0.789, allocations: 0 / 0.6844 GB, free: 9.828 MB / 494.1 MB Notification: Performance of Templates: time 0.05047/0.8395, allocations: 31.25 MB / 0.7149 GB, free: 10.68 MB / 0.5137 GB make -j1 -f OpenIPSL_OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test.makefile Environment - environmentSimulation: (rm -f OpenIPSL_OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test.pipe ; mkfifo OpenIPSL_OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test.pipe ; head -c 1048576 < OpenIPSL_OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test.pipe >> ../files/OpenIPSL_OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test.sim & ./OpenIPSL_OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test -abortSlowSimulation -alarm=480 -lv LOG_STATS > OpenIPSL_OpenIPSL.Tests.Controls.PSAT.TG.TGTypeIV_test.pipe 2>&1) Environment - environmentSimulation: