Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr PowerGrids_symb_jac_PowerGrids.Examples.Tutorial.GridOperation.Controlled.ControlledGridParametersChange.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.ControlledGridParametersChange,fileNamePrefix="PowerGrids_symb_jac_PowerGrids_Examples_Tutorial_GridOperation_Controlled_ControlledGridParametersChange",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(PowerGrids.Examples.Tutorial.GridOperation.Controlled.ControlledGridParametersChange,fileNamePrefix="PowerGrids_symb_jac_PowerGrids_Examples_Tutorial_GridOperation_Controlled_ControlledGridParametersChange",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 0.001016/0.001016, allocations: 95.88 kB / 15.69 MB, free: 480 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001414/0.001414, allocations: 178.2 kB / 16.57 MB, free: 6.391 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.592/1.592, allocations: 205.4 MB / 222.7 MB, free: 5.668 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/PowerGrids 1.0.2/package.mo): time 0.05904/0.05904, allocations: 14.17 MB / 285.2 MB, free: 7.152 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 0.0005777/0.0005779, allocations: 14.5 kB / 349.6 MB, free: 17.14 MB / 254.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1149/0.1155, allocations: 51.11 MB / 400.7 MB, free: 13.97 MB / 302.1 MB Notification: Performance of NFInst.instantiate(PowerGrids.Examples.Tutorial.GridOperation.Controlled.ControlledGridParametersChange): time 0.01473/0.1303, allocations: 13.57 MB / 414.2 MB, free: 364 kB / 302.1 MB Notification: Performance of NFInst.instExpressions: time 0.01492/0.1452, allocations: 6.435 MB / 420.7 MB, free: 9.906 MB / 318.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.004395/0.1497, allocations: 67.56 kB / 420.7 MB, free: 9.84 MB / 318.1 MB Notification: Performance of NFTyping.typeComponents: time 0.003546/0.1533, allocations: 0.5473 MB / 421.3 MB, free: 9.289 MB / 318.1 MB Notification: Performance of NFTyping.typeBindings: time 0.009749/0.1631, allocations: 2.26 MB / 423.5 MB, free: 7.039 MB / 318.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.004887/0.168, allocations: 1.138 MB / 424.7 MB, free: 5.906 MB / 318.1 MB Notification: Performance of NFFlatten.flatten: time 0.009476/0.1775, allocations: 3.367 MB / 428 MB, free: 2.535 MB / 318.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.002316/0.1798, allocations: 0.5851 MB / 428.6 MB, free: 1.926 MB / 318.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.00405/0.1839, allocations: 1.315 MB / 429.9 MB, free: 0.6055 MB / 318.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.228/0.4119, allocations: 1.351 MB / 431.3 MB, free: 14.41 MB / 318.1 MB Notification: Performance of NFPackage.collectConstants: time 0.0006828/0.4127, allocations: 91.44 kB / 431.4 MB, free: 14.41 MB / 318.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.002016/0.4147, allocations: 447.4 kB / 431.8 MB, free: 14.41 MB / 318.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0004135/0.4151, allocations: 388.4 kB / 432.2 MB, free: 14.41 MB / 318.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0008535/0.416, allocations: 0.539 MB / 432.7 MB, free: 14.38 MB / 318.1 MB Notification: Performance of NFConvertDAE.convert: time 0.004242/0.4202, allocations: 2.879 MB / 435.6 MB, free: 14.16 MB / 318.1 MB Notification: Performance of FrontEnd - DAE generated: time 2.896e-06/0.4202, allocations: 1 kB / 435.6 MB, free: 14.16 MB / 318.1 MB Notification: Performance of FrontEnd: time 3.477e-06/0.4202, allocations: 0 / 435.6 MB, free: 14.16 MB / 318.1 MB Notification: Performance of Transformations before backend: time 7.966e-05/0.4203, allocations: 9.375 kB / 435.6 MB, free: 14.16 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 0.01261/0.4329, allocations: 3.659 MB / 439.3 MB, free: 12.76 MB / 318.1 MB Notification: Performance of prepare preOptimizeDAE: time 5.19e-05/0.433, allocations: 12.67 kB / 439.3 MB, free: 12.75 MB / 318.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0006167/0.4336, allocations: 281.7 kB / 439.6 MB, free: 12.71 MB / 318.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001862/0.4355, allocations: 430.1 kB / 440 MB, free: 12.54 MB / 318.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003522/0.439, allocations: 1.714 MB / 441.7 MB, free: 12.06 MB / 318.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001159/0.4392, allocations: 164.9 kB / 441.9 MB, free: 12.05 MB / 318.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0003339/0.4395, allocations: 225.7 kB / 442.1 MB, free: 12.05 MB / 318.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.003796/0.4433, allocations: 2.099 MB / 444.2 MB, free: 11.79 MB / 318.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 3.661e-05/0.4434, allocations: 5.5 kB / 444.2 MB, free: 11.79 MB / 318.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001636/0.4435, allocations: 82.34 kB / 444.3 MB, free: 11.79 MB / 318.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 5.374e-05/0.4436, allocations: 49.5 kB / 444.3 MB, free: 11.79 MB / 318.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003719/0.4473, allocations: 1.983 MB / 446.3 MB, free: 11.76 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 0.01493/0.4623, allocations: 11.69 MB / 458 MB, free: 3.52 MB / 318.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.003874/0.4662, allocations: 2.773 MB / 460.8 MB, free: 2.293 MB / 318.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0001041/0.4663, allocations: 37.03 kB / 460.8 MB, free: 2.289 MB / 318.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001581/0.4679, allocations: 1.11 MB / 461.9 MB, free: 1.875 MB / 318.1 MB Notification: Performance of pre-optimization done (n=209): time 3.757e-06/0.4679, allocations: 2.844 kB / 461.9 MB, free: 1.875 MB / 318.1 MB Notification: Performance of matching and sorting (n=210): time 0.01492/0.4828, allocations: 6.373 MB / 468.3 MB, free: 15.7 MB / 334.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0002008/0.4831, allocations: 369.3 kB / 468.7 MB, free: 15.29 MB / 334.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002667/0.4858, allocations: 1.685 MB / 470.3 MB, free: 14.24 MB / 334.1 MB Notification: Performance of collectPreVariables (initialization): time 0.0002653/0.486, allocations: 73.45 kB / 470.4 MB, free: 14.2 MB / 334.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0008792/0.4869, allocations: 1.062 MB / 471.5 MB, free: 13.56 MB / 334.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0008677/0.4878, allocations: 0.7218 MB / 472.2 MB, free: 12.85 MB / 334.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001216/0.4879, allocations: 52 kB / 472.2 MB, free: 12.8 MB / 334.1 MB Notification: Performance of setup shared object (initialization): time 0.0001962/0.4881, allocations: 403.4 kB / 472.6 MB, free: 12.4 MB / 334.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001588/0.4897, allocations: 0.8329 MB / 473.5 MB, free: 11.57 MB / 334.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002035/0.4918, allocations: 1.361 MB / 474.8 MB, free: 10.01 MB / 334.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.001874/0.4937, allocations: 1.051 MB / 475.9 MB, free: 8.938 MB / 334.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 9.127e-06/0.4937, allocations: 4 kB / 475.9 MB, free: 8.934 MB / 334.1 MB Notification: Performance of matching and sorting (n=337) (initialization): time 0.008549/0.5022, allocations: 3.742 MB / 479.6 MB, free: 5.195 MB / 334.1 MB Notification: Performance of prepare postOptimizeDAE: time 0.002023/0.5043, allocations: 4.878 MB / 484.5 MB, free: 15.95 MB / 350.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.023e-05/0.5043, allocations: 12 kB / 484.5 MB, free: 15.93 MB / 350.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.004515/0.5089, allocations: 1.227 MB / 485.7 MB, free: 14.68 MB / 350.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002447/0.5113, allocations: 0.5234 MB / 486.3 MB, free: 14.18 MB / 350.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0239/0.5353, allocations: 21.14 MB / 0.4955 GB, free: 7.582 MB / 366.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003137/0.5384, allocations: 167.6 kB / 0.4957 GB, free: 7.418 MB / 366.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002627/0.5387, allocations: 99.98 kB / 0.4958 GB, free: 7.32 MB / 366.1 MB Notification: Performance of prepare postOptimizeDAE: time 1.167e-05/0.5387, allocations: 4 kB / 0.4958 GB, free: 7.316 MB / 366.1 MB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.005795/0.5445, allocations: 2.847 MB / 0.4986 GB, free: 4.488 MB / 366.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.951e-05/0.5446, allocations: 12 kB / 0.4986 GB, free: 4.477 MB / 366.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.003351/0.5479, allocations: 0.8946 MB / 0.4994 GB, free: 3.555 MB / 366.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00236/0.5503, allocations: 0.5272 MB / 0.5 GB, free: 3.059 MB / 366.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01704/0.5674, allocations: 16.54 MB / 0.5161 GB, free: 1.289 MB / 382.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002992/0.5704, allocations: 111.7 kB / 0.5162 GB, free: 1.18 MB / 382.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002758/0.5707, allocations: 104 kB / 0.5163 GB, free: 1.078 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 0.001736/0.5724, allocations: 0.6168 MB / 0.5169 GB, free: 484 kB / 382.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0006613/0.5731, allocations: 249 kB / 0.5172 GB, free: 232 kB / 382.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004821/0.5779, allocations: 2.396 MB / 0.5195 GB, free: 13.86 MB / 398.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.819e-05/0.578, allocations: 20 kB / 0.5195 GB, free: 13.84 MB / 398.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.491e-05/0.578, allocations: 11.95 kB / 0.5195 GB, free: 13.82 MB / 398.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.925e-05/0.578, allocations: 11.97 kB / 0.5195 GB, free: 13.81 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 0.008844/0.5869, allocations: 4.825 MB / 0.5243 GB, free: 8.914 MB / 398.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 8.386e-06/0.5869, allocations: 0 / 0.5243 GB, free: 8.914 MB / 398.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001709/0.5886, allocations: 369.6 kB / 0.5246 GB, free: 8.566 MB / 398.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.001513/0.5901, allocations: 492.5 kB / 0.5251 GB, free: 8.082 MB / 398.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001403/0.5903, allocations: 43.98 kB / 0.5251 GB, free: 8.039 MB / 398.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.006108/0.5964, allocations: 3.904 MB / 0.5289 GB, free: 4.016 MB / 398.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.583e-06/0.5964, allocations: 0 / 0.5289 GB, free: 4.016 MB / 398.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0478/0.6442, allocations: 22.3 MB / 0.5507 GB, free: 13.48 MB / 430.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.001233/0.6455, allocations: 469.9 kB / 0.5511 GB, free: 13 MB / 430.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0003676/0.6459, allocations: 40.38 kB / 0.5512 GB, free: 12.96 MB / 430.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001424/0.6473, allocations: 119.8 kB / 0.5513 GB, free: 12.84 MB / 430.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0003117/0.6477, allocations: 145.7 kB / 0.5514 GB, free: 12.7 MB / 430.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001/0.6478, allocations: 52 kB / 0.5515 GB, free: 12.64 MB / 430.1 MB Notification: Performance of sorting global known variables: time 0.001801/0.6496, allocations: 1.091 MB / 0.5526 GB, free: 11.54 MB / 430.1 MB Notification: Performance of sort global known variables: time 1.3e-07/0.6496, allocations: 4 kB / 0.5526 GB, free: 11.53 MB / 430.1 MB Notification: Performance of remove unused functions: time 0.006186/0.6558, allocations: 1.734 MB / 0.5543 GB, free: 9.797 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 0.00711/0.6629, allocations: 4.109 MB / 0.5583 GB, free: 5.691 MB / 430.1 MB Notification: Performance of simCode: created initialization part: time 0.01261/0.6756, allocations: 6.968 MB / 0.5651 GB, free: 14.46 MB / 446.1 MB Notification: Performance of simCode: created event and clocks part: time 6.843e-06/0.6757, allocations: 4 kB / 0.5651 GB, free: 14.46 MB / 446.1 MB Notification: Performance of simCode: created simulation system equations: time 0.002949/0.6786, allocations: 1.438 MB / 0.5665 GB, free: 13.02 MB / 446.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002593/0.6812, allocations: 349 kB / 0.5668 GB, free: 12.67 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 0.01912/0.7004, allocations: 15.74 MB / 0.5822 GB, free: 12.61 MB / 462.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.00192/0.7023, allocations: 1.704 MB / 0.5838 GB, free: 10.87 MB / 462.1 MB Notification: Performance of simCode: alias equations: time 0.002417/0.7048, allocations: 352.8 kB / 0.5842 GB, free: 10.52 MB / 462.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001427/0.7062, allocations: 0.9796 MB / 0.5851 GB, free: 9.539 MB / 462.1 MB Notification: Performance of SimCode: time 1.713e-06/0.7062, allocations: 0 / 0.5851 GB, free: 9.539 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).