Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr IDEAS_dev_IDEAS.Fluid.Chillers.Validation.Carnot_TEva_LimitedCapacity.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 4.0.0+maint.om/package.mo", uses=false)
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo", uses=false)
Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/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 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: "" <> buildModelFMU(IDEAS.Fluid.Chillers.Validation.Carnot_TEva_LimitedCapacity,fileNamePrefix="IDEAS_dev_IDEAS_Fluid_Chillers_Validation_Carnot_TEva_LimitedCapacity",fmuType="me",version="2.0",platforms={"static"})
"" <> buildModelFMU(IDEAS.Fluid.Chillers.Validation.Carnot_TEva_LimitedCapacity,fileNamePrefix="IDEAS_dev_IDEAS_Fluid_Chillers_Validation_Carnot_TEva_LimitedCapacity",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 0.0009387/0.0009388, allocations: 92.16 kB / 15.06 MB, free: 1.098 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001124/0.001125, allocations: 172.7 kB / 15.95 MB, free: 208 kB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.606/1.606, allocations: 223.3 MB / 240 MB, free: 5.273 MB / 190.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo): time 0.9826/0.9826, allocations: 135.3 MB / 426.4 MB, free: 14.21 MB / 350.1 MB
Notification: Performance of FrontEnd - loaded program: time 0.0004762/0.0004763, allocations: 11.94 kB / 0.5071 GB, free: 5.051 MB / 414.1 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.2146/0.2151, allocations: 82.32 MB / 0.5875 GB, free: 2.902 MB / 494.1 MB
Notification: Performance of NFInst.instantiate(IDEAS.Fluid.Chillers.Validation.Carnot_TEva_LimitedCapacity): time 0.343/0.5581, allocations: 56.46 MB / 0.6426 GB, free: 20.23 MB / 0.4981 GB
Notification: Performance of NFInst.instExpressions: time 0.01257/0.5708, allocations: 11.21 MB / 0.6535 GB, free: 12.16 MB / 0.4981 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.002028/0.5728, allocations: 55.22 kB / 0.6536 GB, free: 12.14 MB / 0.4981 GB
Notification: Performance of NFTyping.typeComponents: time 0.001681/0.5745, allocations: 467.2 kB / 0.654 GB, free: 11.88 MB / 0.4981 GB
Notification: Performance of NFTyping.typeBindings: time 0.004376/0.5789, allocations: 1.525 MB / 0.6555 GB, free: 11 MB / 0.4981 GB
Notification: Performance of NFTyping.typeClassSections: time 0.002586/0.5815, allocations: 0.8551 MB / 0.6564 GB, free: 10.59 MB / 0.4981 GB
Notification: Performance of NFFlatten.flatten: time 0.003941/0.5855, allocations: 3.388 MB / 0.6597 GB, free: 9.141 MB / 0.4981 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.001319/0.5868, allocations: 0.7924 MB / 0.6604 GB, free: 8.828 MB / 0.4981 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.002218/0.5891, allocations: 1.043 MB / 0.6615 GB, free: 8.383 MB / 0.4981 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.001555/0.5906, allocations: 0.8018 MB / 0.6622 GB, free: 8.051 MB / 0.4981 GB
Notification: Performance of NFPackage.collectConstants: time 0.0001608/0.5908, allocations: 42.31 kB / 0.6623 GB, free: 8.051 MB / 0.4981 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.002659/0.5935, allocations: 1.114 MB / 0.6634 GB, free: 7.711 MB / 0.4981 GB
Notification: Performance of NFScalarize.scalarize: time 0.0002832/0.5938, allocations: 203.7 kB / 0.6636 GB, free: 7.602 MB / 0.4981 GB
Notification: Performance of NFVerifyModel.verify: time 0.0005741/0.5944, allocations: 278.7 kB / 0.6638 GB, free: 7.441 MB / 0.4981 GB
Notification: Performance of NFConvertDAE.convert: time 0.003239/0.5976, allocations: 1.637 MB / 0.6654 GB, free: 7.027 MB / 0.4981 GB
Notification: Performance of FrontEnd - DAE generated: time 5.38e-06/0.5976, allocations: 1.344 kB / 0.6654 GB, free: 7.027 MB / 0.4981 GB
Notification: Performance of FrontEnd: time 1.943e-06/0.5976, allocations: 0 / 0.6654 GB, free: 7.027 MB / 0.4981 GB
Notification: Performance of Transformations before backend: time 5.003e-05/0.5977, allocations: 4 kB / 0.6654 GB, free: 7.023 MB / 0.4981 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 192
 * Number of variables: 192
Notification: Performance of Generate backend data structure: time 0.003473/0.6012, allocations: 1.506 MB / 0.6669 GB, free: 6 MB / 0.4981 GB
Notification: Performance of prepare preOptimizeDAE: time 5.439e-05/0.6012, allocations: 10.38 kB / 0.6669 GB, free: 6 MB / 0.4981 GB
Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0002538/0.6015, allocations: 121.5 kB / 0.667 GB, free: 5.914 MB / 0.4981 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001821/0.6033, allocations: 387.2 kB / 0.6674 GB, free: 5.824 MB / 0.4981 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.002603/0.606, allocations: 1.077 MB / 0.6685 GB, free: 5.16 MB / 0.4981 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003564/0.6063, allocations: 136.5 kB / 0.6686 GB, free: 5.121 MB / 0.4981 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001554/0.6065, allocations: 78.72 kB / 0.6687 GB, free: 5.098 MB / 0.4981 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.002277/0.6088, allocations: 0.9675 MB / 0.6696 GB, free: 4.645 MB / 0.4981 GB
Notification: Performance of preOpt findStateOrder (simulation): time 2.133e-05/0.6088, allocations: 1.062 kB / 0.6696 GB, free: 4.645 MB / 0.4981 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.352e-05/0.6089, allocations: 31.69 kB / 0.6696 GB, free: 4.621 MB / 0.4981 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.244e-05/0.6089, allocations: 24.03 kB / 0.6697 GB, free: 4.617 MB / 0.4981 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002517/0.6115, allocations: 0.8382 MB / 0.6705 GB, free: 4.344 MB / 0.4981 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 0.007289/0.6188, allocations: 4.809 MB / 0.6752 GB, free: 0.7031 MB / 0.4981 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.001496/0.6203, allocations: 0.5985 MB / 0.6758 GB, free: 0.5 MB / 0.4981 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0006128/0.6209, allocations: 285.2 kB / 0.676 GB, free: 420 kB / 0.4981 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.001492/0.6224, allocations: 1.397 MB / 0.6774 GB, free: 14.88 MB / 0.5137 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.434e-05/0.6225, allocations: 37.44 kB / 0.6774 GB, free: 14.84 MB / 0.5137 GB
Notification: Performance of pre-optimization done (n=43): time 2.845e-06/0.6225, allocations: 1.062 kB / 0.6774 GB, free: 14.84 MB / 0.5137 GB
Notification: Performance of matching and sorting (n=43): time 0.006707/0.6292, allocations: 1.836 MB / 0.6792 GB, free: 14.36 MB / 0.5137 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 4.188e-05/0.6293, allocations: 60.3 kB / 0.6793 GB, free: 14.29 MB / 0.5137 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001849/0.6311, allocations: 1.045 MB / 0.6803 GB, free: 13.86 MB / 0.5137 GB
Notification: Performance of collectPreVariables (initialization): time 0.0001098/0.6313, allocations: 37.7 kB / 0.6803 GB, free: 13.82 MB / 0.5137 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0005038/0.6318, allocations: 0.529 MB / 0.6809 GB, free: 13.4 MB / 0.5137 GB
Notification: Performance of collectInitialBindings (initialization): time 0.000152/0.6319, allocations: 153.8 kB / 0.681 GB, free: 13.28 MB / 0.5137 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 3.374e-05/0.632, allocations: 11.03 kB / 0.681 GB, free: 13.27 MB / 0.5137 GB
Notification: Performance of setup shared object (initialization): time 0.0001289/0.6321, allocations: 329.2 kB / 0.6813 GB, free: 12.96 MB / 0.5137 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0007409/0.6329, allocations: 282.6 kB / 0.6816 GB, free: 12.88 MB / 0.5137 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0009201/0.6338, allocations: 486.3 kB / 0.6821 GB, free: 12.57 MB / 0.5137 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0007667/0.6346, allocations: 330.4 kB / 0.6824 GB, free: 12.45 MB / 0.5137 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.568e-06/0.6346, allocations: 1.375 kB / 0.6824 GB, free: 12.45 MB / 0.5137 GB
Notification: Performance of matching and sorting (n=65) (initialization): time 0.00255/0.6371, allocations: 0.9671 MB / 0.6833 GB, free: 12.09 MB / 0.5137 GB
Notification: Performance of prepare postOptimizeDAE: time 0.0001767/0.6373, allocations: 209.4 kB / 0.6835 GB, free: 11.84 MB / 0.5137 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.276e-05/0.6373, allocations: 4.406 kB / 0.6835 GB, free: 11.84 MB / 0.5137 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.001371/0.6387, allocations: 330.5 kB / 0.6838 GB, free: 11.77 MB / 0.5137 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004873/0.6392, allocations: 111 kB / 0.6839 GB, free: 11.76 MB / 0.5137 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001582/0.6408, allocations: 0.9371 MB / 0.6849 GB, free: 11.1 MB / 0.5137 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00146/0.6423, allocations: 181.5 kB / 0.685 GB, free: 11.04 MB / 0.5137 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.526e-05/0.6424, allocations: 33.31 kB / 0.6851 GB, free: 11.04 MB / 0.5137 GB
Notification: Performance of prepare postOptimizeDAE: time 1.139e-05/0.6424, allocations: 3.719 kB / 0.6851 GB, free: 11.04 MB / 0.5137 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.002219/0.6446, allocations: 0.8443 MB / 0.6859 GB, free: 10.76 MB / 0.5137 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.045e-06/0.6447, allocations: 4.281 kB / 0.6859 GB, free: 10.76 MB / 0.5137 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.001197/0.6459, allocations: 321 kB / 0.6862 GB, free: 10.68 MB / 0.5137 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005716/0.6465, allocations: 122.6 kB / 0.6863 GB, free: 10.66 MB / 0.5137 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001485/0.6479, allocations: 0.9363 MB / 0.6872 GB, free: 10 MB / 0.5137 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001376/0.6493, allocations: 156.3 kB / 0.6874 GB, free: 9.957 MB / 0.5137 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.657e-05/0.6494, allocations: 32.39 kB / 0.6874 GB, free: 9.949 MB / 0.5137 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 18
 * Number of states: 0 ()
 * Number of discrete variables: 0 ()
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (51):
 * Single equations (assignments): 50
 * 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 {1 14}
Notification: Performance of prepare postOptimizeDAE: time 0.000818/0.6503, allocations: 349.1 kB / 0.6877 GB, free: 9.668 MB / 0.5137 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002464/0.6505, allocations: 110.8 kB / 0.6879 GB, free: 9.609 MB / 0.5137 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003403/0.6539, allocations: 1.075 MB / 0.6889 GB, free: 9.242 MB / 0.5137 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.05e-05/0.654, allocations: 6.797 kB / 0.6889 GB, free: 9.242 MB / 0.5137 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 7.304e-06/0.654, allocations: 1.438 kB / 0.6889 GB, free: 9.242 MB / 0.5137 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 9.778e-06/0.654, allocations: 2.719 kB / 0.6889 GB, free: 9.242 MB / 0.5137 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.005355/0.6593, allocations: 2.163 MB / 0.691 GB, free: 8.258 MB / 0.5137 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.083e-05/0.6594, allocations: 3.188 kB / 0.691 GB, free: 8.258 MB / 0.5137 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002565/0.6596, allocations: 59.02 kB / 0.6911 GB, free: 8.25 MB / 0.5137 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.00113/0.6608, allocations: 315 kB / 0.6914 GB, free: 8.176 MB / 0.5137 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.652e-05/0.6609, allocations: 17.02 kB / 0.6914 GB, free: 8.168 MB / 0.5137 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001596/0.6625, allocations: 0.9777 MB / 0.6924 GB, free: 7.484 MB / 0.5137 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 9.959e-06/0.6625, allocations: 2.812 kB / 0.6924 GB, free: 7.484 MB / 0.5137 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003552/0.666, allocations: 1.183 MB / 0.6935 GB, free: 6.98 MB / 0.5137 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0006424/0.6667, allocations: 282.3 kB / 0.6938 GB, free: 6.766 MB / 0.5137 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001389/0.6668, allocations: 13.22 kB / 0.6938 GB, free: 6.758 MB / 0.5137 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0008081/0.6677, allocations: 106.8 kB / 0.6939 GB, free: 6.734 MB / 0.5137 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001045/0.6678, allocations: 43.89 kB / 0.6939 GB, free: 6.719 MB / 0.5137 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.945e-05/0.6678, allocations: 25.08 kB / 0.694 GB, free: 6.715 MB / 0.5137 GB
Notification: Performance of sorting global known variables: time 0.001453/0.6693, allocations: 0.7336 MB / 0.6947 GB, free: 6.402 MB / 0.5137 GB
Notification: Performance of sort global known variables: time 1.5e-07/0.6693, allocations: 0 / 0.6947 GB, free: 6.402 MB / 0.5137 GB
Notification: Performance of remove unused functions: time 0.002083/0.6714, allocations: 0.562 MB / 0.6952 GB, free: 6.289 MB / 0.5137 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 10
 * Number of states: 0 ()
 * 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 (33):
 * Single equations (assignments): 28
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 4
 * 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 {1 16}
Notification: Performance of Backend phase and start with SimCode phase: time 0.004571/0.676, allocations: 2.018 MB / 0.6972 GB, free: 5.145 MB / 0.5137 GB
Notification: Performance of simCode: created initialization part: time 0.003238/0.6792, allocations: 1.051 MB / 0.6982 GB, free: 4.844 MB / 0.5137 GB
Notification: Performance of simCode: created event and clocks part: time 7.154e-06/0.6793, allocations: 1.281 kB / 0.6982 GB, free: 4.844 MB / 0.5137 GB
Notification: Performance of simCode: created simulation system equations: time 0.0008993/0.6802, allocations: 329.3 kB / 0.6985 GB, free: 4.754 MB / 0.5137 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003159/0.6833, allocations: 0.4956 MB / 0.699 GB, free: 4.617 MB / 0.5137 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01521/0.6986, allocations: 6.463 MB / 0.7053 GB, free: 0.6133 MB / 0.5137 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006819/0.6993, allocations: 1.062 MB / 0.7064 GB, free: 15.75 MB / 0.5294 GB
Notification: Performance of simCode: alias equations: time 0.001176/0.7005, allocations: 212.5 kB / 0.7066 GB, free: 15.65 MB / 0.5294 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0005439/0.701, allocations: 415.2 kB / 0.707 GB, free: 15.3 MB / 0.5294 GB
Notification: Performance of SimCode: time 7.11e-07/0.701, allocations: 0 / 0.707 GB, free: 15.3 MB / 0.5294 GB
Notification: Performance of buildModelFMU: Generate the FMI files: time 0.06115/0.7622, allocations: 33.41 MB / 0.7396 GB, free: 15.83 MB / 0.5606 GB
Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0002071/0.7624, allocations: 271.7 kB / 0.7399 GB, free: 15.47 MB / 0.5606 GB
Notification: Performance of buildModelFMU: Generate platform static: time 2.635/3.397, allocations: 0 / 0.7399 GB, free: 15.47 MB / 0.5606 GB
(rm -f IDEAS_dev_IDEAS.Fluid.Chillers.Validation.Carnot_TEva_LimitedCapacity.pipe ; mkfifo IDEAS_dev_IDEAS.Fluid.Chillers.Validation.Carnot_TEva_LimitedCapacity.pipe ; head -c 1048576 < IDEAS_dev_IDEAS.Fluid.Chillers.Validation.Carnot_TEva_LimitedCapacity.pipe >> ../files/IDEAS_dev_IDEAS.Fluid.Chillers.Validation.Carnot_TEva_LimitedCapacity.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator  --tempDir=temp_IDEAS_dev_IDEAS_Fluid_Chillers_Validation_Carnot_TEva_LimitedCapacity_fmu --startTime=0 --stopTime=3600 --timeout=50 --tolerance=1e-06 IDEAS_dev_IDEAS_Fluid_Chillers_Validation_Carnot_TEva_LimitedCapacity.fmu > IDEAS_dev_IDEAS.Fluid.Chillers.Validation.Carnot_TEva_LimitedCapacity.pipe 2>&1)
Environment - environmentSimulation: