Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr PowerGrids_symb_jac_PowerGrids.Examples.Tutorial.GridOperation.Controlled.ControlledGridWithPSS.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/PowerGrids 1.0.2/package.mo", uses=false) Using package PowerGrids with version 1.0.2 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/PowerGrids 1.0.2/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) Ignoring simflag -noemit -homotopyOnFirstTry=() since it seems broken on HelloWorld Running command: "" <> buildModelFMU(PowerGrids.Examples.Tutorial.GridOperation.Controlled.ControlledGridWithPSS,fileNamePrefix="PowerGrids_symb_jac_PowerGrids_Examples_Tutorial_GridOperation_Controlled_ControlledGridWithPSS",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(PowerGrids.Examples.Tutorial.GridOperation.Controlled.ControlledGridWithPSS,fileNamePrefix="PowerGrids_symb_jac_PowerGrids_Examples_Tutorial_GridOperation_Controlled_ControlledGridWithPSS",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001238/0.001238, allocations: 96.27 kB / 15.7 MB, free: 472 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00133/0.00133, allocations: 180.8 kB / 16.58 MB, free: 6.855 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.623/1.623, allocations: 205.4 MB / 222.7 MB, free: 5.66 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/PowerGrids 1.0.2/package.mo): time 0.06416/0.06416, allocations: 14.17 MB / 285.2 MB, free: 7.141 MB / 238.1 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 0.0005249/0.0005249, allocations: 12 kB / 349.6 MB, free: 17.13 MB / 254.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1148/0.1154, allocations: 51.12 MB / 400.7 MB, free: 13.96 MB / 302.1 MB Notification: Performance of NFInst.instantiate(PowerGrids.Examples.Tutorial.GridOperation.Controlled.ControlledGridWithPSS): time 0.014/0.1294, allocations: 13.56 MB / 414.2 MB, free: 360 kB / 302.1 MB Notification: Performance of NFInst.instExpressions: time 0.0124/0.1419, allocations: 6.415 MB / 420.7 MB, free: 9.922 MB / 318.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.002846/0.1447, allocations: 71.5 kB / 420.7 MB, free: 9.852 MB / 318.1 MB Notification: Performance of NFTyping.typeComponents: time 0.002587/0.1474, allocations: 0.5551 MB / 421.3 MB, free: 9.293 MB / 318.1 MB Notification: Performance of NFTyping.typeBindings: time 0.007298/0.1547, allocations: 2.259 MB / 423.5 MB, free: 7.043 MB / 318.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.003303/0.158, allocations: 1.14 MB / 424.7 MB, free: 5.91 MB / 318.1 MB Notification: Performance of NFFlatten.flatten: time 0.00762/0.1656, allocations: 3.379 MB / 428.1 MB, free: 2.527 MB / 318.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.001584/0.1672, allocations: 0.5734 MB / 428.6 MB, free: 1.93 MB / 318.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.003111/0.1704, allocations: 1.323 MB / 430 MB, free: 0.6016 MB / 318.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.2229/0.3932, allocations: 1.358 MB / 431.3 MB, free: 14.07 MB / 318.1 MB Notification: Performance of NFPackage.collectConstants: time 0.0007301/0.394, allocations: 90.94 kB / 431.4 MB, free: 14.07 MB / 318.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.002016/0.396, allocations: 441.7 kB / 431.8 MB, free: 14.07 MB / 318.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0003828/0.3964, allocations: 388.2 kB / 432.2 MB, free: 14.07 MB / 318.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0009026/0.3973, allocations: 0.5408 MB / 432.8 MB, free: 14.04 MB / 318.1 MB Notification: Performance of NFConvertDAE.convert: time 0.0043/0.4016, allocations: 2.881 MB / 435.6 MB, free: 13.82 MB / 318.1 MB Notification: Performance of FrontEnd - DAE generated: time 2.846e-06/0.4016, allocations: 0 / 435.6 MB, free: 13.82 MB / 318.1 MB Notification: Performance of FrontEnd: time 2.014e-06/0.4017, allocations: 1.156 kB / 435.6 MB, free: 13.82 MB / 318.1 MB Notification: Performance of Transformations before backend: time 0.000105/0.4018, allocations: 0 / 435.6 MB, free: 13.82 MB / 318.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 509 * Number of variables: 509 Notification: Performance of Generate backend data structure: time 0.01231/0.4141, allocations: 3.668 MB / 439.3 MB, free: 12.42 MB / 318.1 MB Notification: Performance of prepare preOptimizeDAE: time 3.895e-05/0.4141, allocations: 9.781 kB / 439.3 MB, free: 12.42 MB / 318.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0006243/0.4148, allocations: 281 kB / 439.6 MB, free: 12.37 MB / 318.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001704/0.4165, allocations: 431 kB / 440 MB, free: 12.21 MB / 318.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003486/0.42, allocations: 1.712 MB / 441.7 MB, free: 11.73 MB / 318.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001127/0.4201, allocations: 169 kB / 441.9 MB, free: 11.72 MB / 318.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.000322/0.4204, allocations: 218.4 kB / 442.1 MB, free: 11.72 MB / 318.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.003772/0.4242, allocations: 2.1 MB / 444.2 MB, free: 11.45 MB / 318.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 3.545e-05/0.4243, allocations: 4.438 kB / 444.2 MB, free: 11.45 MB / 318.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001715/0.4244, allocations: 84.66 kB / 444.3 MB, free: 11.45 MB / 318.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 5.907e-05/0.4245, allocations: 48.84 kB / 444.3 MB, free: 11.45 MB / 318.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003729/0.4282, allocations: 1.984 MB / 446.3 MB, free: 11.42 MB / 318.1 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 0.01496/0.4432, allocations: 11.68 MB / 458 MB, free: 3.207 MB / 318.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.003644/0.4469, allocations: 2.779 MB / 460.8 MB, free: 1.977 MB / 318.1 MB Notification: Performance of preOpt evalFunc (simulation): time 9.44e-05/0.447, allocations: 31.59 kB / 460.8 MB, free: 1.973 MB / 318.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.00156/0.4486, allocations: 1.11 MB / 461.9 MB, free: 1.559 MB / 318.1 MB Notification: Performance of pre-optimization done (n=209): time 3.336e-06/0.4486, allocations: 0.9688 kB / 461.9 MB, free: 1.559 MB / 318.1 MB Notification: Performance of matching and sorting (n=210): time 0.01492/0.4635, allocations: 6.376 MB / 468.3 MB, free: 15.39 MB / 334.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 0.000183/0.4637, allocations: 362.6 kB / 468.7 MB, free: 14.98 MB / 334.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0026/0.4663, allocations: 1.695 MB / 470.3 MB, free: 13.9 MB / 334.1 MB Notification: Performance of collectPreVariables (initialization): time 0.0003138/0.4667, allocations: 76.12 kB / 470.4 MB, free: 13.86 MB / 334.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0008683/0.4675, allocations: 1.048 MB / 471.5 MB, free: 13.23 MB / 334.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0008393/0.4684, allocations: 0.7221 MB / 472.2 MB, free: 12.61 MB / 334.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001133/0.4685, allocations: 54.88 kB / 472.2 MB, free: 12.6 MB / 334.1 MB Notification: Performance of setup shared object (initialization): time 0.000175/0.4687, allocations: 407 kB / 472.6 MB, free: 12.24 MB / 334.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001616/0.4703, allocations: 0.8299 MB / 473.5 MB, free: 11.47 MB / 334.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.00207/0.4724, allocations: 1.365 MB / 474.8 MB, free: 9.902 MB / 334.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.001888/0.4743, allocations: 1.057 MB / 475.9 MB, free: 8.832 MB / 334.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 8.366e-06/0.4743, allocations: 4 kB / 475.9 MB, free: 8.828 MB / 334.1 MB Notification: Performance of matching and sorting (n=337) (initialization): time 0.008375/0.4827, allocations: 3.737 MB / 479.6 MB, free: 5.094 MB / 334.1 MB Notification: Performance of prepare postOptimizeDAE: time 0.002038/0.4848, allocations: 4.884 MB / 484.5 MB, free: 15.84 MB / 350.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.458e-05/0.4848, allocations: 12 kB / 484.5 MB, free: 15.82 MB / 350.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.004367/0.4892, allocations: 1.226 MB / 485.8 MB, free: 14.57 MB / 350.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002496/0.4917, allocations: 0.5217 MB / 486.3 MB, free: 14.07 MB / 350.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.02355/0.5153, allocations: 21.14 MB / 0.4955 GB, free: 7.477 MB / 366.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003084/0.5184, allocations: 171.5 kB / 0.4957 GB, free: 7.309 MB / 366.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002587/0.5187, allocations: 98.52 kB / 0.4958 GB, free: 7.215 MB / 366.1 MB Notification: Performance of prepare postOptimizeDAE: time 8.896e-06/0.5187, allocations: 4 kB / 0.4958 GB, free: 7.211 MB / 366.1 MB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.005757/0.5244, allocations: 2.841 MB / 0.4986 GB, free: 4.387 MB / 366.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.839e-05/0.5245, allocations: 16.03 kB / 0.4986 GB, free: 4.371 MB / 366.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.003228/0.5277, allocations: 0.9024 MB / 0.4995 GB, free: 3.445 MB / 366.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002417/0.5301, allocations: 0.5305 MB / 0.5 GB, free: 2.945 MB / 366.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01689/0.547, allocations: 16.54 MB / 0.5161 GB, free: 1.176 MB / 382.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002954/0.55, allocations: 111.7 kB / 0.5162 GB, free: 1.066 MB / 382.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002794/0.5503, allocations: 104 kB / 0.5163 GB, free: 0.9648 MB / 382.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 53 * Number of states: 0 () * Number of discrete variables: 15 ($whenCondition3,$whenCondition4,$PRE.NTHV.fault,NTHV.fault,$whenCondition1,$whenCondition2,$PRE.NTHV.Y.re,NTHV.Y.re,$PRE.NTHV.Y.im,NTHV.Y.im,PSS.firstWashoutVsi2.integrator.local_reset,PSS.secondWashoutVsi1.integrator.local_reset,PSS.firstWashoutVsi1.integrator.local_reset,AVR.firstOrderLim.I.local_reset,TGOV.firstOrderLim.I.local_reset) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (282): * Single equations (assignments): 268 * Array equations: 0 * Algorithm blocks: 2 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 2 * Torn equation systems: 10 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 2 {2,2} * Without analytic Jacobian: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 6 {(1,100.0%) 2,(1,100.0%) 1,(1,100.0%) 1,(1,100.0%) 1,(1,100.0%) 2,(1,100.0%) 2} * Non-linear torn systems: 4 {5 33,1 1,1 1,1 3} Notification: Performance of prepare postOptimizeDAE: time 0.001671/0.552, allocations: 0.6096 MB / 0.5169 GB, free: 372 kB / 382.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0006144/0.5526, allocations: 249 kB / 0.5172 GB, free: 120 kB / 382.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004748/0.5574, allocations: 2.394 MB / 0.5195 GB, free: 13.72 MB / 398.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.724e-05/0.5574, allocations: 20 kB / 0.5195 GB, free: 13.7 MB / 398.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.558e-05/0.5575, allocations: 7.953 kB / 0.5195 GB, free: 13.69 MB / 398.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.927e-05/0.5575, allocations: 10.7 kB / 0.5195 GB, free: 13.68 MB / 398.1 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 postOpt removeSimpleEquations (simulation): time 0.008547/0.566, allocations: 4.827 MB / 0.5242 GB, free: 8.777 MB / 398.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.043e-06/0.5661, allocations: 0 / 0.5242 GB, free: 8.777 MB / 398.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001667/0.5677, allocations: 369 kB / 0.5246 GB, free: 8.434 MB / 398.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.001477/0.5692, allocations: 499.2 kB / 0.5251 GB, free: 7.945 MB / 398.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.000128/0.5694, allocations: 43.98 kB / 0.5251 GB, free: 7.902 MB / 398.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.006141/0.5755, allocations: 3.885 MB / 0.5289 GB, free: 3.891 MB / 398.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.996e-06/0.5755, allocations: 4 kB / 0.5289 GB, free: 3.887 MB / 398.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.04774/0.6233, allocations: 22.3 MB / 0.5507 GB, free: 13.34 MB / 430.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.001287/0.6246, allocations: 469.9 kB / 0.5511 GB, free: 12.86 MB / 430.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0003794/0.625, allocations: 43.98 kB / 0.5512 GB, free: 12.82 MB / 430.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001377/0.6264, allocations: 115.8 kB / 0.5513 GB, free: 12.71 MB / 430.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0003096/0.6267, allocations: 141.7 kB / 0.5514 GB, free: 12.57 MB / 430.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001024/0.6268, allocations: 55.98 kB / 0.5515 GB, free: 12.51 MB / 430.1 MB Notification: Performance of sorting global known variables: time 0.001781/0.6286, allocations: 1.083 MB / 0.5525 GB, free: 11.41 MB / 430.1 MB Notification: Performance of sort global known variables: time 2.71e-07/0.6286, allocations: 4 kB / 0.5525 GB, free: 11.41 MB / 430.1 MB Notification: Performance of remove unused functions: time 0.006144/0.6348, allocations: 1.734 MB / 0.5542 GB, free: 9.672 MB / 430.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 16 (GEN.theta,GEN.omegaPu,GEN.lambdaDPu,GEN.lambdafPu,GEN.lambdaQ1Pu,GEN.lambdaQ2Pu,TGOV.firstOrderLim.I.y,TGOV.leadLag.firstOrder.y,AVR.leadLag.firstOrder.y,AVR.firstOrderLim.I.y,PSS.firstWashoutVsi1.integrator.y,PSS.secondWashoutVsi1.integrator.y,PSS.firstWashoutVsi2.integrator.y,PSS.leadLag1.firstOrder.y,PSS.leadLag2.firstOrder.y,PSS.firstOrderVsi2.firstOrder1.y) * Number of discrete variables: 7 ($whenCondition1,$whenCondition2,$whenCondition3,$whenCondition4,NTHV.Y.re,NTHV.Y.im,NTHV.fault) * Number of discrete states: 7 ($whenCondition4,NTHV.Y.im,NTHV.Y.re,$whenCondition3,NTHV.fault,$whenCondition2,$whenCondition1) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (170): * Single equations (assignments): 167 * Array equations: 0 * Algorithm blocks: 2 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 1 {(9,48.1%) 29} * Non-linear torn systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.006953/0.6418, allocations: 4.117 MB / 0.5583 GB, free: 5.57 MB / 430.1 MB Notification: Performance of simCode: created initialization part: time 0.01258/0.6544, allocations: 6.967 MB / 0.5651 GB, free: 14.34 MB / 446.1 MB Notification: Performance of simCode: created event and clocks part: time 5.18e-06/0.6544, allocations: 384 / 0.5651 GB, free: 14.34 MB / 446.1 MB Notification: Performance of simCode: created simulation system equations: time 0.002919/0.6573, allocations: 1.439 MB / 0.5665 GB, free: 12.89 MB / 446.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002571/0.6599, allocations: 362.7 kB / 0.5668 GB, free: 12.54 MB / 446.1 MB Warning: The hideResult annotation could not be evaluated, probably due to missing annotation(Evaluate=true). It is set to 'isProtected' (=false) by default. Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01897/0.6789, allocations: 15.73 MB / 0.5822 GB, free: 12.47 MB / 462.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.00187/0.6808, allocations: 1.7 MB / 0.5838 GB, free: 10.73 MB / 462.1 MB Notification: Performance of simCode: alias equations: time 0.002435/0.6833, allocations: 356.8 kB / 0.5842 GB, free: 10.38 MB / 462.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001452/0.6847, allocations: 0.9796 MB / 0.5851 GB, free: 9.402 MB / 462.1 MB Notification: Performance of SimCode: time 1.242e-06/0.6848, allocations: 3.938 kB / 0.5851 GB, free: 9.398 MB / 462.1 MB [CodegenUtil.tpl:197:14-197:14:writable] Error: Template error: initial value of unknown type: Modelica.Math.atan3(-0.0, 0.0, 0.0).