Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr OpenIPSL_2.0.0_OpenIPSL.Tests.Controls.PSSE.ES.IEEEX1.conf.json
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_Synchronous 0.93.0/package.mo", uses=false)
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 3.2.3+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 2.0.0/package.mo", uses=false)
Using package OpenIPSL with version 2.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 2.0.0/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 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+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)
Using package Modelica_Synchronous with version 0.93.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_Synchronous 0.93.0/package.mo)
Running command: "" <> buildModelFMU(OpenIPSL.Tests.Controls.PSSE.ES.IEEEX1,fileNamePrefix="OpenIPSL_2_0_0_OpenIPSL_Tests_Controls_PSSE_ES_IEEEX1",fmuType="me",version="2.0",platforms={"static"})
"" <> buildModelFMU(OpenIPSL.Tests.Controls.PSSE.ES.IEEEX1,fileNamePrefix="OpenIPSL_2_0_0_OpenIPSL_Tests_Controls_PSSE_ES_IEEEX1",fmuType="me",version="2.0",platforms={"static"})
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_Synchronous 0.93.0/package.mo): time 0.09374/0.09374, allocations: 12.2 MB / 27.17 MB, free: 1.887 MB / 19.63 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0008491/0.0008491, allocations: 102.7 kB / 30.68 MB, free: 4.98 MB / 26.18 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.496/1.496, allocations: 205.4 MB / 239.5 MB, free: 13.61 MB / 206.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001223/0.001222, allocations: 172.5 kB / 290.6 MB, free: 11.66 MB / 238.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 2.0.0/package.mo): time 0.5193/0.5193, allocations: 78.53 MB / 420.1 MB, free: 11.68 MB / 302.1 MB
Notification: Modelica_Synchronous 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: 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: OpenIPSL 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: Performance of FrontEnd - loaded program: time 0.0008708/0.0008709, allocations: 24 kB / 0.4896 GB, free: 10.41 MB / 382.1 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.3595/0.3604, allocations: 69.23 MB / 0.5572 GB, free: 21.05 MB / 382.1 MB
Notification: Performance of NFInst.instantiate(OpenIPSL.Tests.Controls.PSSE.ES.IEEEX1): time 0.006373/0.3668, allocations: 8.018 MB / 0.565 GB, free: 13 MB / 382.1 MB
Notification: Performance of NFInst.instExpressions: time 0.005238/0.3721, allocations: 2.644 MB / 0.5676 GB, free: 10.34 MB / 382.1 MB
Notification: Performance of NFInst.updateImplicitVariability: time 0.001221/0.3733, allocations: 16 kB / 0.5676 GB, free: 10.33 MB / 382.1 MB
Notification: Performance of NFTyping.typeComponents: time 0.0008018/0.3741, allocations: 242.2 kB / 0.5678 GB, free: 10.09 MB / 382.1 MB
Notification: Performance of NFTyping.typeBindings: time 0.002511/0.3767, allocations: 1.011 MB / 0.5688 GB, free: 9.082 MB / 382.1 MB
Notification: Performance of NFTyping.typeClassSections: time 0.00146/0.3781, allocations: 0.6352 MB / 0.5694 GB, free: 8.453 MB / 382.1 MB
Notification: Performance of NFFlatten.flatten: time 0.002291/0.3804, allocations: 2.236 MB / 0.5716 GB, free: 6.207 MB / 382.1 MB
Notification: Performance of NFFlatten.resolveConnections: time 0.00057/0.381, allocations: 382.7 kB / 0.572 GB, free: 5.812 MB / 382.1 MB
Notification: Performance of NFEvalConstants.evaluate: time 0.0009137/0.3819, allocations: 0.7856 MB / 0.5728 GB, free: 5.023 MB / 382.1 MB
Notification: Performance of NFSimplifyModel.simplify: time 0.0009409/0.3829, allocations: 1.054 MB / 0.5738 GB, free: 3.965 MB / 382.1 MB
Notification: Performance of NFPackage.collectConstants: time 0.0001708/0.3831, allocations: 96 kB / 0.5739 GB, free: 3.871 MB / 382.1 MB
Notification: Performance of NFFlatten.collectFunctions: time 0.0006636/0.3837, allocations: 343.7 kB / 0.5742 GB, free: 3.535 MB / 382.1 MB
Notification: Performance of NFScalarize.scalarize: time 0.0002729/0.384, allocations: 382.2 kB / 0.5746 GB, free: 3.16 MB / 382.1 MB
Notification: Performance of NFVerifyModel.verify: time 0.0002949/0.3843, allocations: 312.7 kB / 0.5749 GB, free: 2.848 MB / 382.1 MB
Notification: Performance of NFConvertDAE.convert: time 0.001305/0.3856, allocations: 1.878 MB / 0.5767 GB, free: 0.9648 MB / 382.1 MB
Notification: Performance of FrontEnd - DAE generated: time 6.783e-06/0.3857, allocations: 0 / 0.5767 GB, free: 0.9648 MB / 382.1 MB
Notification: Performance of FrontEnd: time 2.174e-06/0.3857, allocations: 0 / 0.5767 GB, free: 0.9648 MB / 382.1 MB
Notification: Performance of Transformations before backend: time 2.482e-05/0.3857, allocations: 0 / 0.5767 GB, free: 0.9648 MB / 382.1 MB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 260
 * Number of variables: 260
Notification: Performance of Generate backend data structure: time 0.01288/0.3986, allocations: 3.79 MB / 0.5804 GB, free: 13.12 MB / 398.1 MB
Notification: Performance of prepare preOptimizeDAE: time 5.161e-05/0.3987, allocations: 15.98 kB / 0.5804 GB, free: 13.1 MB / 398.1 MB
Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0005022/0.3992, allocations: 164.5 kB / 0.5806 GB, free: 12.93 MB / 398.1 MB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004753/0.4039, allocations: 0.778 MB / 0.5813 GB, free: 12.15 MB / 398.1 MB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.002461/0.4064, allocations: 1.139 MB / 0.5824 GB, free: 10.96 MB / 398.1 MB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0005121/0.4069, allocations: 482.1 kB / 0.5829 GB, free: 10.42 MB / 398.1 MB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002366/0.4072, allocations: 123.9 kB / 0.583 GB, free: 10.3 MB / 398.1 MB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.003015/0.4102, allocations: 1.562 MB / 0.5845 GB, free: 8.684 MB / 398.1 MB
Notification: Performance of preOpt findStateOrder (simulation): time 2.052e-05/0.4102, allocations: 0 / 0.5845 GB, free: 8.684 MB / 398.1 MB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001194/0.4104, allocations: 44 kB / 0.5846 GB, free: 8.641 MB / 398.1 MB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.173e-05/0.4104, allocations: 24 kB / 0.5846 GB, free: 8.617 MB / 398.1 MB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003041/0.4134, allocations: 1.476 MB / 0.5861 GB, free: 7.133 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 preOpt removeSimpleEquations (simulation): time 0.009662/0.4231, allocations: 5.441 MB / 0.5914 GB, free: 1.457 MB / 398.1 MB
Notification: Performance of preOpt comSubExp (simulation): time 0.008368/0.4315, allocations: 3.551 MB / 0.5948 GB, free: 13.77 MB / 414.1 MB
Notification: Performance of preOpt resolveLoops (simulation): time 0.002108/0.4337, allocations: 1.018 MB / 0.5958 GB, free: 12.75 MB / 414.1 MB
Notification: Performance of preOpt evalFunc (simulation): time 0.0007032/0.4344, allocations: 0.7336 MB / 0.5965 GB, free: 11.84 MB / 414.1 MB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.002435/0.4368, allocations: 1.18 MB / 0.5977 GB, free: 10.64 MB / 414.1 MB
Notification: Performance of pre-optimization done (n=132): time 4.959e-06/0.4369, allocations: 0 / 0.5977 GB, free: 10.64 MB / 414.1 MB
Notification: Performance of matching and sorting (n=132): time 0.0413/0.4782, allocations: 12.01 MB / 0.6094 GB, free: 14.59 MB / 430.1 MB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001057/0.4783, allocations: 132 kB / 0.6096 GB, free: 14.44 MB / 430.1 MB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.00338/0.4817, allocations: 1.515 MB / 0.611 GB, free: 12.92 MB / 430.1 MB
Notification: Performance of collectPreVariables (initialization): time 0.0004983/0.4823, allocations: 57.7 kB / 0.6111 GB, free: 12.86 MB / 430.1 MB
Notification: Performance of collectInitialEqns (initialization): time 0.000754/0.483, allocations: 0.6436 MB / 0.6117 GB, free: 12.21 MB / 430.1 MB
Notification: Performance of collectInitialBindings (initialization): time 0.0009355/0.484, allocations: 493.1 kB / 0.6122 GB, free: 11.72 MB / 430.1 MB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003722/0.4844, allocations: 40 kB / 0.6122 GB, free: 11.68 MB / 430.1 MB
Notification: Performance of setup shared object (initialization): time 0.0002357/0.4846, allocations: 378 kB / 0.6126 GB, free: 11.3 MB / 430.1 MB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.002682/0.4873, allocations: 1.105 MB / 0.6137 GB, free: 10.2 MB / 430.1 MB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.002804/0.4901, allocations: 1.329 MB / 0.615 GB, free: 8.801 MB / 430.1 MB
Notification: Performance of analyzeInitialSystem (initialization): time 0.003056/0.4932, allocations: 1.193 MB / 0.6161 GB, free: 7.609 MB / 430.1 MB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.516e-05/0.4932, allocations: 3.984 kB / 0.6161 GB, free: 7.605 MB / 430.1 MB
Notification: Performance of matching and sorting (n=263) (initialization): time 0.01019/0.5034, allocations: 4.238 MB / 0.6203 GB, free: 3.355 MB / 430.1 MB
Notification: Performance of prepare postOptimizeDAE: time 3.736e-05/0.5035, allocations: 10.66 kB / 0.6203 GB, free: 3.348 MB / 430.1 MB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.694e-05/0.5035, allocations: 4 kB / 0.6203 GB, free: 3.344 MB / 430.1 MB
Notification: Performance of postOpt tearingSystem (initialization): time 0.009462/0.513, allocations: 3.062 MB / 0.6233 GB, free: 280 kB / 430.1 MB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001816/0.5149, allocations: 347.5 kB / 0.6236 GB, free: 15.93 MB / 446.1 MB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.006678/0.5216, allocations: 3.007 MB / 0.6265 GB, free: 12.89 MB / 446.1 MB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002531/0.5241, allocations: 318 kB / 0.6268 GB, free: 12.58 MB / 446.1 MB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003536/0.5245, allocations: 67.98 kB / 0.6269 GB, free: 12.52 MB / 446.1 MB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 17
 * Number of states: 0 ()
 * Number of discrete variables: 3 ($whenCondition1,$whenCondition2,iEEEX1.rotatingExciter.sISO.local_reset)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (206):
 * Single equations (assignments): 204
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 1
 * 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: 0
 * Non-linear torn systems: 1 {30 26}
Notification: Performance of prepare postOptimizeDAE: time 0.001033/0.5256, allocations: 321.1 kB / 0.6272 GB, free: 12.2 MB / 446.1 MB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0005553/0.5261, allocations: 169.8 kB / 0.6274 GB, free: 12.03 MB / 446.1 MB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01621/0.5423, allocations: 5.884 MB / 0.6331 GB, free: 6.121 MB / 446.1 MB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.206e-05/0.5424, allocations: 16 kB / 0.6331 GB, free: 6.105 MB / 446.1 MB
Notification: Performance of postOpt constantLinearSystem (simulation): time 1.538e-05/0.5425, allocations: 3.984 kB / 0.6331 GB, free: 6.102 MB / 446.1 MB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.068e-05/0.5425, allocations: 3.984 kB / 0.6331 GB, free: 6.098 MB / 446.1 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 0.02084/0.5634, allocations: 8.086 MB / 0.641 GB, free: 13.88 MB / 462.1 MB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.101e-05/0.5634, allocations: 4 kB / 0.641 GB, free: 13.88 MB / 462.1 MB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001023/0.5645, allocations: 159.8 kB / 0.6412 GB, free: 13.72 MB / 462.1 MB
Notification: Performance of postOpt tearingSystem (simulation): time 0.007426/0.5719, allocations: 2.521 MB / 0.6437 GB, free: 11.2 MB / 462.1 MB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0003041/0.5723, allocations: 27.98 kB / 0.6437 GB, free: 11.17 MB / 462.1 MB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.02951/0.6018, allocations: 10.3 MB / 0.6537 GB, free: 0.7305 MB / 462.1 MB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.36e-06/0.6019, allocations: 0 / 0.6537 GB, free: 0.7305 MB / 462.1 MB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0297/0.6316, allocations: 7.185 MB / 0.6608 GB, free: 9.504 MB / 478.1 MB
Notification: Performance of postOpt removeConstants (simulation): time 0.0009064/0.6325, allocations: 290.5 kB / 0.661 GB, free: 9.199 MB / 478.1 MB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0007364/0.6333, allocations: 28 kB / 0.6611 GB, free: 9.172 MB / 478.1 MB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002118/0.6354, allocations: 187.8 kB / 0.6612 GB, free: 8.988 MB / 478.1 MB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.001088/0.6365, allocations: 261.3 kB / 0.6615 GB, free: 8.734 MB / 478.1 MB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.000261/0.6368, allocations: 32 kB / 0.6615 GB, free: 8.703 MB / 478.1 MB
Notification: Performance of sorting global known variables: time 0.002272/0.6391, allocations: 1.016 MB / 0.6625 GB, free: 7.691 MB / 478.1 MB
Notification: Performance of sort global known variables: time 2.51e-07/0.6391, allocations: 3.938 kB / 0.6625 GB, free: 7.688 MB / 478.1 MB
Notification: Performance of remove unused functions: time 0.00278/0.6419, allocations: 0.5659 MB / 0.6631 GB, free: 7.121 MB / 478.1 MB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 3
 * Number of states: 14 (gENCLS.omega,gENCLS.delta,gENCLS.eq,gENROE.w,gENROE.delta,gENROE.Epd,gENROE.Epq,gENROE.PSIkd,gENROE.PSIkq,iEEEX1.LL.TF.x_scaled[1],iEEEX1.imDerivativeLag.x,iEEEX1.SL.state,iEEEX1.rotatingExciter.sISO.y,iEEEX1.TransducerDelay.state)
 * Number of discrete variables: 2 ($whenCondition1,$whenCondition2)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (89):
 * Single equations (assignments): 88
 * Array equations: 0
 * Algorithm blocks: 0
 * 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: 0
 * Non-linear torn systems: 1 {26 23}
Notification: Performance of Backend phase and start with SimCode phase: time 0.02097/0.6629, allocations: 7.789 MB / 0.6707 GB, free: 15.29 MB / 494.1 MB
Notification: Performance of simCode: created initialization part: time 0.01013/0.6731, allocations: 3.32 MB / 0.6739 GB, free: 11.97 MB / 494.1 MB
Notification: Performance of simCode: created event and clocks part: time 9.788e-06/0.6731, allocations: 0 / 0.6739 GB, free: 11.97 MB / 494.1 MB
Notification: Performance of simCode: created simulation system equations: time 0.006731/0.6799, allocations: 2.202 MB / 0.6761 GB, free: 9.746 MB / 494.1 MB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00251/0.6824, allocations: 157.5 kB / 0.6762 GB, free: 9.59 MB / 494.1 MB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.3253/1.008, allocations: 14.93 MB / 0.6908 GB, free: 118.7 MB / 494.1 MB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001093/1.009, allocations: 1.265 MB / 0.692 GB, free: 118 MB / 494.1 MB
Notification: Performance of simCode: alias equations: time 0.0009573/1.01, allocations: 160.5 kB / 0.6922 GB, free: 117.9 MB / 494.1 MB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0008858/1.011, allocations: 0.6562 MB / 0.6928 GB, free: 117.4 MB / 494.1 MB
Notification: Performance of SimCode: time 1.323e-06/1.011, allocations: 0 / 0.6928 GB, free: 117.4 MB / 494.1 MB
Notification: Performance of buildModelFMU: Generate the FMI files: time 0.08318/1.094, allocations: 41.93 MB / 0.7338 GB, free: 82.4 MB / 494.1 MB
Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0001672/1.094, allocations: 198.7 kB / 0.734 GB, free: 82.16 MB / 494.1 MB
Notification: Performance of buildModelFMU: Generate platform static: time 3.883/4.978, allocations: 0 / 0.734 GB, free: 82.16 MB / 494.1 MB
(rm -f OpenIPSL_2.0.0_OpenIPSL.Tests.Controls.PSSE.ES.IEEEX1.pipe ; mkfifo OpenIPSL_2.0.0_OpenIPSL.Tests.Controls.PSSE.ES.IEEEX1.pipe ; head -c 1048576 < OpenIPSL_2.0.0_OpenIPSL.Tests.Controls.PSSE.ES.IEEEX1.pipe >> ../files/OpenIPSL_2.0.0_OpenIPSL.Tests.Controls.PSSE.ES.IEEEX1.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator  --tempDir=temp_OpenIPSL_2_0_0_OpenIPSL_Tests_Controls_PSSE_ES_IEEEX1_fmu --startTime=0 --stopTime=10 --timeout=50 --tolerance=1e-06 OpenIPSL_2_0_0_OpenIPSL_Tests_Controls_PSSE_ES_IEEEX1.fmu > OpenIPSL_2.0.0_OpenIPSL.Tests.Controls.PSSE.ES.IEEEX1.pipe 2>&1)
Environment - environmentSimulation: