Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerFull.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/Buildings 7.0.3-maint.7.0.x/package.mo", uses=false)
Using package Buildings with version 7.0.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/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)
Running command: translateModel(Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerFull,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerFull")
translateModel(Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerFull,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerFull")
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0008578/0.0008579, allocations: 97.95 kB / 15.36 MB, free: 0.7344 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.005698/0.005698, allocations: 168.8 kB / 16.26 MB, free: 6.652 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.46/1.46, allocations: 205.4 MB / 222.4 MB, free: 5.555 MB / 174.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo): time 1.586/1.586, allocations: 252 MB / 0.5105 GB, free: 4.676 MB / 414.1 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 0.0005325/0.0005325, allocations: 12 kB / 0.6249 GB, free: 0.7227 MB / 0.5137 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.5516/0.5522, allocations: 106.3 MB / 0.7287 GB, free: 11.27 MB / 0.545 GB
Notification: Performance of NFInst.instantiate(Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerFull): time 0.01857/0.5708, allocations: 16.76 MB / 0.7451 GB, free: 10.45 MB / 0.5606 GB
Notification: Performance of NFInst.instExpressions: time 0.009959/0.5808, allocations: 6.182 MB / 0.7511 GB, free: 4.246 MB / 0.5606 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.001233/0.5821, allocations: 43.88 kB / 0.7512 GB, free: 4.203 MB / 0.5606 GB
Notification: Performance of NFTyping.typeComponents: time 0.0008345/0.5829, allocations: 305.8 kB / 0.7515 GB, free: 3.902 MB / 0.5606 GB
Notification: Performance of NFTyping.typeBindings: time 0.002575/0.5855, allocations: 1.024 MB / 0.7525 GB, free: 2.875 MB / 0.5606 GB
Notification: Performance of NFTyping.typeClassSections: time 0.002267/0.5878, allocations: 0.8577 MB / 0.7533 GB, free: 2.02 MB / 0.5606 GB
Notification: Performance of NFFlatten.flatten: time 0.007192/0.595, allocations: 6.718 MB / 0.7599 GB, free: 11.29 MB / 0.5762 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.01071/0.6058, allocations: 6.811 MB / 0.7665 GB, free: 4.391 MB / 0.5762 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.002808/0.6086, allocations: 1.343 MB / 0.7678 GB, free: 3.043 MB / 0.5762 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.003759/0.6124, allocations: 2.002 MB / 0.7698 GB, free: 1.035 MB / 0.5762 GB
Notification: Performance of NFPackage.collectConstants: time 0.0006225/0.6131, allocations: 192 kB / 0.77 GB, free: 0.8477 MB / 0.5762 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.002367/0.6155, allocations: 1.072 MB / 0.771 GB, free: 15.77 MB / 0.5919 GB
Notification: Performance of NFScalarize.scalarize: time 0.001613/0.6171, allocations: 1.469 MB / 0.7725 GB, free: 14.3 MB / 0.5919 GB
Notification: Performance of NFVerifyModel.verify: time 0.001878/0.619, allocations: 1.448 MB / 0.7739 GB, free: 12.84 MB / 0.5919 GB
Notification: Performance of NFConvertDAE.convert: time 0.00679/0.6258, allocations: 6.285 MB / 0.78 GB, free: 6.535 MB / 0.5919 GB
Notification: Performance of FrontEnd - DAE generated: time 5.741e-06/0.6258, allocations: 0 / 0.78 GB, free: 6.535 MB / 0.5919 GB
Notification: Performance of FrontEnd: time 3.025e-06/0.6258, allocations: 0 / 0.78 GB, free: 6.535 MB / 0.5919 GB
Notification: Performance of Transformations before backend: time 0.0001703/0.626, allocations: 0 / 0.78 GB, free: 6.535 MB / 0.5919 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 792
 * Number of variables: 792
Notification: Performance of Generate backend data structure: time 0.006203/0.6322, allocations: 2.49 MB / 0.7824 GB, free: 3.984 MB / 0.5919 GB
Notification: Performance of prepare preOptimizeDAE: time 4.836e-05/0.6323, allocations: 16.03 kB / 0.7825 GB, free: 3.969 MB / 0.5919 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01199/0.6443, allocations: 2.174 MB / 0.7846 GB, free: 1.789 MB / 0.5919 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.004141/0.6485, allocations: 1.708 MB / 0.7862 GB, free: 40 kB / 0.5919 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002142/0.6487, allocations: 218.3 kB / 0.7865 GB, free: 15.82 MB / 0.6075 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0007982/0.6495, allocations: 288.3 kB / 0.7867 GB, free: 15.54 MB / 0.6075 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.01225/0.6618, allocations: 5.907 MB / 0.7925 GB, free: 9.562 MB / 0.6075 GB
Notification: Performance of preOpt findStateOrder (simulation): time 6.341e-05/0.6619, allocations: 4 kB / 0.7925 GB, free: 9.559 MB / 0.6075 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0003569/0.6623, allocations: 123.9 kB / 0.7926 GB, free: 9.438 MB / 0.6075 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0004319/0.6627, allocations: 262 kB / 0.7929 GB, free: 9.18 MB / 0.6075 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01513/0.6778, allocations: 6.105 MB / 0.7988 GB, free: 3.062 MB / 0.6075 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.03181/0.7097, allocations: 22.52 MB / 0.8208 GB, free: 10.58 MB / 0.6387 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.005884/0.7156, allocations: 2.542 MB / 0.8233 GB, free: 7.977 MB / 0.6387 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.004427/0.7201, allocations: 1.694 MB / 0.825 GB, free: 6.277 MB / 0.6387 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0002326/0.7204, allocations: 110.1 kB / 0.8251 GB, free: 6.152 MB / 0.6387 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.717e-05/0.7204, allocations: 47.56 kB / 0.8251 GB, free: 6.094 MB / 0.6387 GB
Notification: Performance of pre-optimization done (n=122): time 5.891e-06/0.7204, allocations: 4 kB / 0.8251 GB, free: 6.09 MB / 0.6387 GB
Notification: Performance of matching and sorting (n=173): time 0.05155/0.772, allocations: 14.6 MB / 0.8394 GB, free: 7.414 MB / 0.6544 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 6.102e-05/0.7721, allocations: 73.41 kB / 0.8394 GB, free: 7.328 MB / 0.6544 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002074/0.7742, allocations: 1.147 MB / 0.8406 GB, free: 6.156 MB / 0.6544 GB
Notification: Performance of collectPreVariables (initialization): time 0.0003838/0.7746, allocations: 53.7 kB / 0.8406 GB, free: 6.098 MB / 0.6544 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0009225/0.7755, allocations: 1.266 MB / 0.8419 GB, free: 4.812 MB / 0.6544 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0008883/0.7764, allocations: 0.5931 MB / 0.8424 GB, free: 4.211 MB / 0.6544 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0005647/0.777, allocations: 198.4 kB / 0.8426 GB, free: 4.012 MB / 0.6544 GB
Notification: Performance of setup shared object (initialization): time 0.0001496/0.7772, allocations: 345.9 kB / 0.843 GB, free: 3.668 MB / 0.6544 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.005325/0.7825, allocations: 2.03 MB / 0.8449 GB, free: 1.633 MB / 0.6544 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.005944/0.7885, allocations: 2.742 MB / 0.8476 GB, free: 14.57 MB / 0.67 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0108/0.7993, allocations: 4.831 MB / 0.8523 GB, free: 9.422 MB / 0.67 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.439e-05/0.7994, allocations: 11.94 kB / 0.8523 GB, free: 9.41 MB / 0.67 GB
Notification: Performance of matching and sorting (n=301) (initialization): time 0.01703/0.8164, allocations: 6.269 MB / 0.8585 GB, free: 3.109 MB / 0.67 GB
Notification: Performance of prepare postOptimizeDAE: time 0.0008085/0.8173, allocations: 0.742 MB / 0.8592 GB, free: 2.051 MB / 0.67 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.473e-05/0.8174, allocations: 24 kB / 0.8592 GB, free: 2.027 MB / 0.67 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.005464/0.8228, allocations: 1.546 MB / 0.8607 GB, free: 472 kB / 0.67 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003613/0.8265, allocations: 0.7604 MB / 0.8615 GB, free: 15.7 MB / 0.6856 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.02267/0.8492, allocations: 17.46 MB / 0.8785 GB, free: 13.43 MB / 0.7012 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003821/0.8531, allocations: 487 kB / 0.879 GB, free: 12.96 MB / 0.7012 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0005386/0.8536, allocations: 123.9 kB / 0.8791 GB, free: 12.84 MB / 0.7012 GB
Notification: Performance of prepare postOptimizeDAE: time 1.228e-05/0.8537, allocations: 4 kB / 0.8791 GB, free: 12.83 MB / 0.7012 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.01626/0.8699, allocations: 6.074 MB / 0.885 GB, free: 6.734 MB / 0.7012 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.507e-05/0.8701, allocations: 24 kB / 0.8851 GB, free: 6.711 MB / 0.7012 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.004554/0.8746, allocations: 1.453 MB / 0.8865 GB, free: 5.238 MB / 0.7012 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003706/0.8784, allocations: 0.7643 MB / 0.8872 GB, free: 4.473 MB / 0.7012 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0224/0.9008, allocations: 17.24 MB / 0.9041 GB, free: 2.434 MB / 0.7169 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00375/0.9046, allocations: 471.1 kB / 0.9045 GB, free: 1.973 MB / 0.7169 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0008921/0.9055, allocations: 112 kB / 0.9046 GB, free: 1.863 MB / 0.7169 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 102
 * 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 (235):
 * Single equations (assignments): 229
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 6
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 6 systems
   {(3,9,100.0%), (3,9,100.0%), (3,9,100.0%), (3,9,100.0%), (3,9,100.0%), (3,9,100.0%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 0 systems
Notification: Performance of prepare postOptimizeDAE: time 0.003439/0.909, allocations: 1.328 MB / 0.9059 GB, free: 0.5234 MB / 0.7169 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0006647/0.9097, allocations: 138.3 kB / 0.906 GB, free: 396 kB / 0.7169 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.4744/1.384, allocations: 5.808 MB / 0.9117 GB, free: 160.8 MB / 0.7169 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.035e-05/1.384, allocations: 15.81 kB / 0.9117 GB, free: 160.8 MB / 0.7169 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 7.63e-05/1.384, allocations: 12.16 kB / 0.9117 GB, free: 160.8 MB / 0.7169 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.63e-05/1.384, allocations: 8.25 kB / 0.9117 GB, free: 160.8 MB / 0.7169 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.02427/1.409, allocations: 9.623 MB / 0.9211 GB, free: 157.8 MB / 0.7169 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.247e-05/1.409, allocations: 7.406 kB / 0.9211 GB, free: 157.8 MB / 0.7169 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002417/1.411, allocations: 0.5165 MB / 0.9217 GB, free: 157.8 MB / 0.7169 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.003599/1.415, allocations: 1.271 MB / 0.9229 GB, free: 157.5 MB / 0.7169 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0002513/1.415, allocations: 58.31 kB / 0.9229 GB, free: 157.4 MB / 0.7169 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.01771/1.433, allocations: 16.6 MB / 0.9392 GB, free: 145.8 MB / 0.7169 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.235e-05/1.433, allocations: 10.45 kB / 0.9392 GB, free: 145.8 MB / 0.7169 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01202/1.445, allocations: 5.073 MB / 0.9441 GB, free: 142.2 MB / 0.7169 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.001105/1.446, allocations: 0.5468 MB / 0.9447 GB, free: 141.7 MB / 0.7169 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0004498/1.446, allocations: 36 kB / 0.9447 GB, free: 141.7 MB / 0.7169 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002709/1.449, allocations: 435.1 kB / 0.9451 GB, free: 141.2 MB / 0.7169 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0004639/1.45, allocations: 152.8 kB / 0.9453 GB, free: 141.1 MB / 0.7169 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001738/1.45, allocations: 67.95 kB / 0.9453 GB, free: 141 MB / 0.7169 GB
Notification: Performance of sorting global known variables: time 0.001392/1.451, allocations: 0.8246 MB / 0.9461 GB, free: 140.2 MB / 0.7169 GB
Notification: Performance of sort global known variables: time 2.1e-07/1.451, allocations: 0 / 0.9461 GB, free: 140.2 MB / 0.7169 GB
Notification: Performance of remove unused functions: time 0.00524/1.457, allocations: 1.26 MB / 0.9474 GB, free: 138.9 MB / 0.7169 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 28
 * 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 (104):
 * Single equations (assignments): 98
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 6
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 6 systems
   {(2,10,100.0%), (2,10,100.0%), (2,10,100.0%), (3,9,100.0%), (3,9,100.0%), (3,9,100.0%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 0 systems
Notification: Performance of Backend phase and start with SimCode phase: time 0.0004061/1.457, allocations: 152.8 kB / 0.9475 GB, free: 138.8 MB / 0.7169 GB
Notification: Performance of simCode: created initialization part: time 0.02062/1.478, allocations: 9.517 MB / 0.9568 GB, free: 129.2 MB / 0.7169 GB
Notification: Performance of simCode: created event and clocks part: time 1.577e-05/1.478, allocations: 0 / 0.9568 GB, free: 129.2 MB / 0.7169 GB
Notification: Performance of simCode: created simulation system equations: time 0.007172/1.485, allocations: 3.288 MB / 0.96 GB, free: 125.9 MB / 0.7169 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002983/1.488, allocations: 219.2 kB / 0.9602 GB, free: 125.7 MB / 0.7169 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02098/1.509, allocations: 9.034 MB / 0.969 GB, free: 116.5 MB / 0.7169 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.002899/1.512, allocations: 2.379 MB / 0.9714 GB, free: 114.1 MB / 0.7169 GB
Notification: Performance of simCode: alias equations: time 0.004534/1.516, allocations: 1.254 MB / 0.9726 GB, free: 112.9 MB / 0.7169 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0006825/1.517, allocations: 131.3 kB / 0.9727 GB, free: 112.7 MB / 0.7169 GB
Notification: Performance of SimCode: time 1.383e-06/1.517, allocations: 0 / 0.9727 GB, free: 112.7 MB / 0.7169 GB
Notification: Performance of Templates: time 0.06152/1.579, allocations: 43.5 MB / 1.015 GB, free: 69.52 MB / 0.7169 GB
make -j1 -f Buildings_maint.7.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerFull.makefile
Environment - environmentSimulation:
(rm -f Buildings_maint.7.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerFull.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerFull.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerFull.pipe >> ../files/Buildings_maint.7.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerFull.sim & ./Buildings_maint.7.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerFull  -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.7.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerFull.pipe 2>&1)
Environment - environmentSimulation: