Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr ThermoPower_ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_C.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/ThermoPower 3.1.0-master/package.mo", uses=false) Using package ThermoPower with version 3.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoPower 3.1.0-master/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(ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_C,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ThermoPower_ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_C") translateModel(ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_C,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ThermoPower_ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_C") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001271/0.001271, allocations: 91.92 kB / 16.31 MB, free: 5.672 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001491/0.001491, allocations: 181.5 kB / 17.21 MB, free: 5.59 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.594/1.594, allocations: 205.4 MB / 223.4 MB, free: 5.543 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoPower 3.1.0-master/package.mo): time 0.4201/0.4201, allocations: 48.78 MB / 320.4 MB, free: 3.809 MB / 254.1 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 0.0005134/0.0005136, allocations: 16 kB / 391.2 MB, free: 14.3 MB / 334.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1261/0.1267, allocations: 60.26 MB / 451.4 MB, free: 1.895 MB / 382.1 MB Notification: Performance of NFInst.instantiate(ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_C): time 0.2587/0.3854, allocations: 47.99 MB / 499.4 MB, free: 18.81 MB / 382.1 MB Notification: Performance of NFInst.instExpressions: time 0.01321/0.3986, allocations: 10.75 MB / 0.4982 GB, free: 11.27 MB / 382.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0008219/0.3995, allocations: 15.81 kB / 0.4982 GB, free: 11.26 MB / 382.1 MB Notification: Performance of NFTyping.typeComponents: time 0.000911/0.4004, allocations: 251.1 kB / 0.4985 GB, free: 11.13 MB / 382.1 MB Notification: Performance of NFTyping.typeBindings: time 0.001194/0.4016, allocations: 460.1 kB / 0.4989 GB, free: 10.87 MB / 382.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.0139/0.4155, allocations: 4.069 MB / 0.5029 GB, free: 7.957 MB / 382.1 MB Notification: Performance of NFFlatten.flatten: time 0.006954/0.4225, allocations: 5.545 MB / 0.5083 GB, free: 4.73 MB / 382.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.003578/0.4261, allocations: 1.786 MB / 0.51 GB, free: 3.621 MB / 382.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.003663/0.4298, allocations: 1.608 MB / 0.5116 GB, free: 3.004 MB / 382.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.005389/0.4352, allocations: 2.934 MB / 0.5145 GB, free: 1.559 MB / 382.1 MB Notification: Performance of NFPackage.collectConstants: time 0.001817/0.437, allocations: 326.7 kB / 0.5148 GB, free: 1.559 MB / 382.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0135/0.4505, allocations: 6.308 MB / 0.5209 GB, free: 11.36 MB / 398.1 MB Notification: Performance of NFScalarize.scalarize: time 0.003986/0.4546, allocations: 1.937 MB / 0.5228 GB, free: 9.418 MB / 398.1 MB Notification: Performance of NFVerifyModel.verify: time 0.002323/0.4569, allocations: 0.7261 MB / 0.5235 GB, free: 8.684 MB / 398.1 MB Notification: Performance of NFConvertDAE.convert: time 0.0136/0.4706, allocations: 7.454 MB / 0.5308 GB, free: 1.215 MB / 398.1 MB Notification: Performance of FrontEnd - DAE generated: time 6.773e-06/0.4706, allocations: 0 / 0.5308 GB, free: 1.215 MB / 398.1 MB Notification: Performance of FrontEnd: time 2.846e-06/0.4706, allocations: 4 kB / 0.5308 GB, free: 1.211 MB / 398.1 MB Notification: Performance of Transformations before backend: time 0.0002163/0.4708, allocations: 0 / 0.5308 GB, free: 1.211 MB / 398.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 1363 * Number of variables: 1363 Notification: Performance of Generate backend data structure: time 0.02936/0.5002, allocations: 10.43 MB / 0.541 GB, free: 6.711 MB / 414.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.474e-05/0.5003, allocations: 12.02 kB / 0.541 GB, free: 6.699 MB / 414.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004622/0.5049, allocations: 0.7833 MB / 0.5418 GB, free: 5.91 MB / 414.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.006765/0.5117, allocations: 2.79 MB / 0.5445 GB, free: 3.07 MB / 414.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003269/0.512, allocations: 394.5 kB / 0.5449 GB, free: 2.684 MB / 414.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.002063/0.5141, allocations: 0.5039 MB / 0.5454 GB, free: 2.18 MB / 414.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.03098/0.5451, allocations: 12.13 MB / 0.5572 GB, free: 5.992 MB / 430.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 9.647e-05/0.5452, allocations: 1.375 kB / 0.5572 GB, free: 5.992 MB / 430.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.001145/0.5464, allocations: 212 kB / 0.5574 GB, free: 5.785 MB / 430.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0002096/0.5466, allocations: 218.6 kB / 0.5577 GB, free: 5.57 MB / 430.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.03974/0.5864, allocations: 14.27 MB / 0.5716 GB, free: 7.277 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 preOpt removeSimpleEquations (simulation): time 0.03551/0.6219, allocations: 23.48 MB / 0.5945 GB, free: 13.98 MB / 478.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.01004/0.632, allocations: 4.577 MB / 0.599 GB, free: 9.387 MB / 478.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.003008/0.635, allocations: 2.028 MB / 0.601 GB, free: 7.355 MB / 478.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.3451/0.9802, allocations: 64.62 MB / 0.6641 GB, free: 139.4 MB / 0.4981 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 9.062e-05/0.9803, allocations: 58.06 kB / 0.6641 GB, free: 139.4 MB / 0.4981 GB Notification: Performance of pre-optimization done (n=245): time 4.258e-06/0.9803, allocations: 2.688 kB / 0.6641 GB, free: 139.4 MB / 0.4981 GB Notification: Performance of matching and sorting (n=245): time 0.08482/1.065, allocations: 22.83 MB / 0.6864 GB, free: 132.3 MB / 0.4981 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.888e-05/1.065, allocations: 76.12 kB / 0.6865 GB, free: 132.2 MB / 0.4981 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003603/1.069, allocations: 4.01 MB / 0.6904 GB, free: 130.3 MB / 0.4981 GB Notification: Performance of collectPreVariables (initialization): time 0.0006702/1.07, allocations: 72.86 kB / 0.6905 GB, free: 130.3 MB / 0.4981 GB Notification: Performance of collectInitialEqns (initialization): time 0.001308/1.071, allocations: 3.14 MB / 0.6935 GB, free: 127.5 MB / 0.4981 GB Notification: Performance of collectInitialBindings (initialization): time 0.001025/1.072, allocations: 1.002 MB / 0.6945 GB, free: 126.7 MB / 0.4981 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004606/1.072, allocations: 176.5 kB / 0.6947 GB, free: 126.5 MB / 0.4981 GB Notification: Performance of setup shared object (initialization): time 0.0003055/1.073, allocations: 0.7184 MB / 0.6954 GB, free: 125.9 MB / 0.4981 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.004636/1.077, allocations: 3.783 MB / 0.6991 GB, free: 122.7 MB / 0.4981 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.006405/1.084, allocations: 8.928 MB / 0.7078 GB, free: 111.2 MB / 0.4981 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.007413/1.091, allocations: 5.41 MB / 0.7131 GB, free: 105.8 MB / 0.4981 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.0001314/1.091, allocations: 55.94 kB / 0.7131 GB, free: 105.7 MB / 0.4981 GB Notification: Performance of matching and sorting (n=1102) (initialization): time 0.0233/1.115, allocations: 14.84 MB / 0.7276 GB, free: 90.84 MB / 0.4981 GB Notification: Performance of prepare postOptimizeDAE: time 0.002635/1.117, allocations: 5.385 MB / 0.7329 GB, free: 82.93 MB / 0.4981 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0001631/1.118, allocations: 180 kB / 0.7331 GB, free: 82.76 MB / 0.4981 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.02843/1.146, allocations: 10.35 MB / 0.7432 GB, free: 72.4 MB / 0.4981 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004328/1.15, allocations: 1.758 MB / 0.7449 GB, free: 70.64 MB / 0.4981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01341/1.164, allocations: 9.043 MB / 0.7537 GB, free: 61.57 MB / 0.4981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.006407/1.17, allocations: 1.292 MB / 0.755 GB, free: 60.27 MB / 0.4981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001258/1.171, allocations: 0.6482 MB / 0.7556 GB, free: 59.62 MB / 0.4981 GB Notification: Performance of prepare postOptimizeDAE: time 1.33e-05/1.171, allocations: 4.938 kB / 0.7556 GB, free: 59.61 MB / 0.4981 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.01927/1.191, allocations: 14.36 MB / 0.7696 GB, free: 45.21 MB / 0.4981 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0003724/1.191, allocations: 180 kB / 0.7698 GB, free: 45.04 MB / 0.4981 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.02851/1.22, allocations: 10.34 MB / 0.7799 GB, free: 34.69 MB / 0.4981 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004499/1.224, allocations: 1.755 MB / 0.7816 GB, free: 32.93 MB / 0.4981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01303/1.237, allocations: 9.032 MB / 0.7904 GB, free: 23.86 MB / 0.4981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.005911/1.243, allocations: 0.964 MB / 0.7914 GB, free: 22.89 MB / 0.4981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0009746/1.244, allocations: 0.6448 MB / 0.792 GB, free: 22.25 MB / 0.4981 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 820 * Number of states: 0 () * Number of discrete variables: 14 (hex.fluidState[12].phase,hex.fluidState[11].phase,hex.fluidState[10].phase,hex.fluidState[9].phase,hex.fluidState[8].phase,hex.fluidState[7].phase,hex.fluidState[6].phase,hex.fluidState[5].phase,hex.fluidState[4].phase,hex.fluidState[3].phase,hex.fluidState[2].phase,hex.fluidState[1].phase,T_out.fluidState.phase,T_in.fluidState.phase) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (949): * Single equations (assignments): 948 * 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 {13 141} Notification: Performance of prepare postOptimizeDAE: time 0.002568/1.247, allocations: 1.841 MB / 0.7938 GB, free: 20.39 MB / 0.4981 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0005818/1.247, allocations: 359.4 kB / 0.7941 GB, free: 20.04 MB / 0.4981 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.3181/1.565, allocations: 31.27 MB / 0.8247 GB, free: 145.8 MB / 0.5137 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 0.0001018/1.566, allocations: 66.97 kB / 0.8248 GB, free: 145.8 MB / 0.5137 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.358e-05/1.566, allocations: 3.188 kB / 0.8248 GB, free: 145.8 MB / 0.5137 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 7.424e-05/1.566, allocations: 15.39 kB / 0.8248 GB, free: 145.8 MB / 0.5137 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0676/1.633, allocations: 43.29 MB / 0.867 GB, free: 129.8 MB / 0.5137 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.007e-05/1.633, allocations: 0 / 0.867 GB, free: 129.8 MB / 0.5137 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0024/1.636, allocations: 410.6 kB / 0.8674 GB, free: 129.7 MB / 0.5137 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.02393/1.66, allocations: 6.99 MB / 0.8743 GB, free: 129 MB / 0.5137 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.001215/1.661, allocations: 124.9 kB / 0.8744 GB, free: 129 MB / 0.5137 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0439/1.705, allocations: 27.24 MB / 0.901 GB, free: 109.9 MB / 0.5137 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.026e-06/1.705, allocations: 0 / 0.901 GB, free: 109.9 MB / 0.5137 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.02988/1.735, allocations: 13.94 MB / 0.9146 GB, free: 95.93 MB / 0.5137 GB Notification: Performance of postOpt removeConstants (simulation): time 0.002542/1.737, allocations: 0.9005 MB / 0.9155 GB, free: 95.01 MB / 0.5137 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0007923/1.738, allocations: 87.97 kB / 0.9156 GB, free: 94.92 MB / 0.5137 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002784/1.741, allocations: 264.8 kB / 0.9158 GB, free: 94.66 MB / 0.5137 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0009843/1.742, allocations: 247.1 kB / 0.9161 GB, free: 94.42 MB / 0.5137 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0002569/1.742, allocations: 99.91 kB / 0.9161 GB, free: 94.32 MB / 0.5137 GB Notification: Performance of sorting global known variables: time 0.002424/1.745, allocations: 2.336 MB / 0.9184 GB, free: 92 MB / 0.5137 GB Notification: Performance of sort global known variables: time 1.2e-07/1.745, allocations: 0 / 0.9184 GB, free: 92 MB / 0.5137 GB Notification: Performance of remove unused functions: time 0.01348/1.758, allocations: 3.3 MB / 0.9217 GB, free: 88.76 MB / 0.5137 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 2 * Number of states: 13 (hex.p,hex.h[1],hex.h[2],hex.h[3],hex.h[4],hex.h[5],hex.h[6],hex.h[7],hex.h[8],hex.h[9],hex.h[10],hex.h[11],hex.h[12]) * Number of discrete variables: 28 ($cse1.phase,$cse1.region,$cse2.phase,$cse2.region,$cse16.phase,$cse16.region,$cse17.phase,$cse17.region,$cse18.phase,$cse18.region,$cse19.phase,$cse19.region,$cse20.phase,$cse20.region,$cse21.phase,$cse21.region,$cse22.phase,$cse22.region,$cse23.phase,$cse23.region,$cse24.phase,$cse24.region,$cse25.phase,$cse25.region,$cse26.phase,$cse26.region,$cse27.phase,$cse27.region) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (166): * Single equations (assignments): 151 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 14 * 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 {13 106} Notification: Performance of Backend phase and start with SimCode phase: time 0.003969/1.762, allocations: 1.035 MB / 0.9227 GB, free: 87.88 MB / 0.5137 GB Notification: Performance of simCode: created initialization part: time 0.02937/1.792, allocations: 16.25 MB / 0.9385 GB, free: 71.67 MB / 0.5137 GB Notification: Performance of simCode: created event and clocks part: time 9.818e-06/1.792, allocations: 1 kB / 0.9385 GB, free: 71.67 MB / 0.5137 GB Notification: Performance of simCode: created simulation system equations: time 0.008839/1.801, allocations: 4.284 MB / 0.9427 GB, free: 67.36 MB / 0.5137 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003159/1.804, allocations: 0.7001 MB / 0.9434 GB, free: 66.67 MB / 0.5137 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0162/1.82, allocations: 13.39 MB / 0.9565 GB, free: 53.3 MB / 0.5137 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001788/1.822, allocations: 2.737 MB / 0.9592 GB, free: 50.53 MB / 0.5137 GB Notification: Performance of simCode: alias equations: time 0.01178/1.834, allocations: 5.871 MB / 0.9649 GB, free: 44.65 MB / 0.5137 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001219/1.835, allocations: 295.3 kB / 0.9652 GB, free: 44.36 MB / 0.5137 GB Notification: Performance of SimCode: time 9.62e-07/1.835, allocations: 0 / 0.9652 GB, free: 44.36 MB / 0.5137 GB Notification: Performance of Templates: time 0.4456/2.28, allocations: 175.3 MB / 1.136 GB, free: 77.68 MB / 0.5294 GB make -j1 -f ThermoPower_ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_C.makefile Environment - environmentSimulation: (rm -f ThermoPower_ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_C.pipe ; mkfifo ThermoPower_ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_C.pipe ; head -c 1048576 < ThermoPower_ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_C.pipe >> ../files/ThermoPower_ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_C.sim & ./ThermoPower_ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_C -abortSlowSimulation -alarm=480 -lv LOG_STATS > ThermoPower_ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_C.pipe 2>&1) Environment - environmentSimulation: