Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr BuildingSystems_BuildingSystems.Fluid.Sensors.Examples.MoistAirEnthalpyFlowRate.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/NcDataReader2 2.5.1-master/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo", uses=false) Using package BuildingSystems with version 2.0.0-beta (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo) Using package NcDataReader2 with version 2.5.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-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: translateModel(BuildingSystems.Fluid.Sensors.Examples.MoistAirEnthalpyFlowRate,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.Sensors.Examples.MoistAirEnthalpyFlowRate") translateModel(BuildingSystems.Fluid.Sensors.Examples.MoistAirEnthalpyFlowRate,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.Sensors.Examples.MoistAirEnthalpyFlowRate") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0008234/0.0008234, allocations: 99.23 kB / 15.05 MB, free: 1.105 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.0008405/0.0008405, allocations: 177.3 kB / 15.94 MB, free: 228 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.148/1.148, allocations: 223.2 MB / 239.9 MB, free: 5.453 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.001638/0.001638, allocations: 270.8 kB / 291.2 MB, free: 2.012 MB / 238.1 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/Buildings/Airvolumes/Parameter/package.mo:5:3-5:34:writable] Warning: Got element f_alp that was not referenced in the package.order file. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/Buildings/Airvolumes/Parameter/package.mo:6:3-6:35:writable] Warning: Elements in the package.mo-file need to be in the same relative order as the package.order file. Got element named f_lay but it was already added because it was not the next element in the list at that time. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/Buildings/Airvolumes/Parameter/package.mo:6:3-6:35:writable] Warning: Got element f_lay that was not referenced in the package.order file. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/Buildings/Airvolumes/Parameter/package.mo:7:3-7:37:writable] Warning: Elements in the package.mo-file need to be in the same relative order as the package.order file. Got element named f_loss but it was already added because it was not the next element in the list at that time. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/Buildings/Airvolumes/Parameter/package.mo:7:3-7:37:writable] Warning: Got element f_loss that was not referenced in the package.order file. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/Buildings/Airvolumes/Parameter/package.mo:8:3-8:33:writable] Warning: Elements in the package.mo-file need to be in the same relative order as the package.order file. Got element named f_pv but it was already added because it was not the next element in the list at that time. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/Buildings/Airvolumes/Parameter/package.mo:8:3-8:33:writable] Warning: Got element f_pv that was not referenced in the package.order file. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/Buildings/Airvolumes/Parameter/package.mo:2:1-34:14:writable] Warning: f_pv was referenced in the package.order file, but was not found in package.mo, f_pv/package.mo or f_pv.mo. Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo): time 0.7277/0.7277, allocations: 144.6 MB / 487 MB, free: 7.207 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0003603/0.0003603, allocations: 14.39 kB / 0.5683 GB, free: 38.36 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1251/0.1255, allocations: 83.08 MB / 0.6494 GB, free: 3.66 MB / 446.1 MB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.Sensors.Examples.MoistAirEnthalpyFlowRate): time 0.4124/0.5379, allocations: 149.5 MB / 0.7955 GB, free: 2.023 MB / 0.5606 GB Notification: Performance of NFInst.instExpressions: time 0.006343/0.5443, allocations: 6.535 MB / 0.8018 GB, free: 1.914 MB / 0.5606 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0003635/0.5447, allocations: 15.09 kB / 0.8018 GB, free: 1.914 MB / 0.5606 GB Notification: Performance of NFTyping.typeComponents: time 0.0006957/0.5454, allocations: 256.3 kB / 0.8021 GB, free: 1.914 MB / 0.5606 GB Notification: Performance of NFTyping.typeBindings: time 0.001808/0.5472, allocations: 0.8245 MB / 0.8029 GB, free: 1.902 MB / 0.5606 GB Notification: Performance of NFTyping.typeClassSections: time 0.001307/0.5485, allocations: 0.5791 MB / 0.8035 GB, free: 1.898 MB / 0.5606 GB Notification: Performance of NFFlatten.flatten: time 0.0006508/0.5492, allocations: 0.6197 MB / 0.8041 GB, free: 1.895 MB / 0.5606 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0004231/0.5496, allocations: 327.3 kB / 0.8044 GB, free: 1.859 MB / 0.5606 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001211/0.5508, allocations: 0.6933 MB / 0.8051 GB, free: 1.855 MB / 0.5606 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0003908/0.5512, allocations: 322.6 kB / 0.8054 GB, free: 1.852 MB / 0.5606 GB Notification: Performance of NFPackage.collectConstants: time 4.645e-05/0.5513, allocations: 26.34 kB / 0.8054 GB, free: 1.848 MB / 0.5606 GB Notification: Performance of NFFlatten.collectFunctions: time 0.000855/0.5522, allocations: 447.8 kB / 0.8058 GB, free: 1.848 MB / 0.5606 GB Notification: Performance of NFScalarize.scalarize: time 0.0001183/0.5523, allocations: 133.2 kB / 0.8059 GB, free: 1.848 MB / 0.5606 GB Notification: Performance of NFVerifyModel.verify: time 0.0001863/0.5525, allocations: 109.5 kB / 0.806 GB, free: 17.82 MB / 0.5762 GB Notification: Performance of NFConvertDAE.convert: time 0.0005396/0.553, allocations: 0.516 MB / 0.8066 GB, free: 17.78 MB / 0.5762 GB Notification: Performance of FrontEnd - DAE generated: time 2.315e-06/0.553, allocations: 4 kB / 0.8066 GB, free: 17.78 MB / 0.5762 GB Notification: Performance of FrontEnd: time 1.392e-06/0.553, allocations: 1.859 kB / 0.8066 GB, free: 17.78 MB / 0.5762 GB Notification: Performance of Transformations before backend: time 5.811e-06/0.553, allocations: 0 / 0.8066 GB, free: 17.78 MB / 0.5762 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 93 * Number of variables: 93 Notification: Performance of Generate backend data structure: time 0.0008723/0.5539, allocations: 0.7084 MB / 0.8072 GB, free: 17.25 MB / 0.5762 GB Notification: Performance of prepare preOptimizeDAE: time 3.549e-05/0.554, allocations: 9.125 kB / 0.8073 GB, free: 17.25 MB / 0.5762 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0008862/0.5549, allocations: 154.7 kB / 0.8074 GB, free: 17.22 MB / 0.5762 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.000477/0.5553, allocations: 375.8 kB / 0.8078 GB, free: 16.98 MB / 0.5762 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.533e-05/0.5554, allocations: 29.06 kB / 0.8078 GB, free: 16.98 MB / 0.5762 GB Notification: Performance of preOpt expandDerOperator (simulation): time 5.524e-05/0.5554, allocations: 41.92 kB / 0.8078 GB, free: 16.98 MB / 0.5762 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0006603/0.5561, allocations: 449 kB / 0.8083 GB, free: 16.87 MB / 0.5762 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.183e-05/0.5561, allocations: 0.625 kB / 0.8083 GB, free: 16.87 MB / 0.5762 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 3.322e-05/0.5562, allocations: 15.53 kB / 0.8083 GB, free: 16.87 MB / 0.5762 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.616e-05/0.5562, allocations: 9.281 kB / 0.8083 GB, free: 16.87 MB / 0.5762 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0006502/0.5568, allocations: 333 kB / 0.8086 GB, free: 16.87 MB / 0.5762 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 0.001854/0.5587, allocations: 2.018 MB / 0.8106 GB, free: 15.51 MB / 0.5762 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0003699/0.5591, allocations: 235.3 kB / 0.8108 GB, free: 15.48 MB / 0.5762 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0003773/0.5595, allocations: 145.9 kB / 0.8109 GB, free: 15.39 MB / 0.5762 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 1.919e-05/0.5595, allocations: 36.28 kB / 0.811 GB, free: 15.35 MB / 0.5762 GB Notification: Performance of pre-optimization done (n=24): time 1.402e-06/0.5595, allocations: 0 / 0.811 GB, free: 15.35 MB / 0.5762 GB Notification: Performance of matching and sorting (n=24): time 0.0008692/0.5604, allocations: 470.7 kB / 0.8114 GB, free: 15.29 MB / 0.5762 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.322e-05/0.5604, allocations: 59.56 kB / 0.8115 GB, free: 15.22 MB / 0.5762 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0003146/0.5608, allocations: 396 kB / 0.8119 GB, free: 15.11 MB / 0.5762 GB Notification: Performance of collectPreVariables (initialization): time 2.853e-05/0.5608, allocations: 28.64 kB / 0.8119 GB, free: 15.07 MB / 0.5762 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001276/0.5609, allocations: 225 kB / 0.8121 GB, free: 14.96 MB / 0.5762 GB Notification: Performance of collectInitialBindings (initialization): time 5.474e-05/0.561, allocations: 85.19 kB / 0.8122 GB, free: 14.9 MB / 0.5762 GB Notification: Performance of simplifyInitialFunctions (initialization): time 1.377e-05/0.561, allocations: 7.906 kB / 0.8122 GB, free: 14.9 MB / 0.5762 GB Notification: Performance of setup shared object (initialization): time 0.0001233/0.5611, allocations: 349.3 kB / 0.8125 GB, free: 14.59 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002122/0.5614, allocations: 121.5 kB / 0.8126 GB, free: 14.59 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002433/0.5616, allocations: 183.3 kB / 0.8128 GB, free: 14.52 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0002202/0.5618, allocations: 142 kB / 0.8129 GB, free: 14.52 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.897e-06/0.5618, allocations: 5.359 kB / 0.8129 GB, free: 14.51 MB / 0.5762 GB Notification: Performance of matching and sorting (n=31) (initialization): time 0.0005635/0.5624, allocations: 372.7 kB / 0.8133 GB, free: 14.45 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 1.512e-05/0.5624, allocations: 5.5 kB / 0.8133 GB, free: 14.45 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.462e-06/0.5625, allocations: 2.75 kB / 0.8133 GB, free: 14.45 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.276e-05/0.5625, allocations: 2.75 kB / 0.8133 GB, free: 14.45 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002513/0.5627, allocations: 68.42 kB / 0.8134 GB, free: 14.45 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 8.536e-06/0.5627, allocations: 5.656 kB / 0.8134 GB, free: 14.45 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002526/0.563, allocations: 55.27 kB / 0.8134 GB, free: 14.43 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.339e-05/0.563, allocations: 16.61 kB / 0.8135 GB, free: 14.42 MB / 0.5762 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 8 * 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 (31): * Single equations (assignments): 31 * 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: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.0001558/0.5632, allocations: 172.7 kB / 0.8136 GB, free: 14.3 MB / 0.5762 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 5.654e-05/0.5633, allocations: 42.73 kB / 0.8137 GB, free: 14.28 MB / 0.5762 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0005997/0.5639, allocations: 384.1 kB / 0.814 GB, free: 14.22 MB / 0.5762 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.759e-06/0.5639, allocations: 6.75 kB / 0.814 GB, free: 14.22 MB / 0.5762 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.757e-06/0.5639, allocations: 1.75 kB / 0.814 GB, free: 14.22 MB / 0.5762 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.507e-06/0.5639, allocations: 0 / 0.814 GB, free: 14.22 MB / 0.5762 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001199/0.5651, allocations: 0.939 MB / 0.815 GB, free: 13.85 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.278e-06/0.5651, allocations: 3.406 kB / 0.815 GB, free: 13.85 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002267/0.5654, allocations: 53.44 kB / 0.815 GB, free: 13.85 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (simulation): time 5.811e-06/0.5654, allocations: 8.938 kB / 0.815 GB, free: 13.85 MB / 0.5762 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.805e-05/0.5654, allocations: 7.062 kB / 0.815 GB, free: 13.85 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 2.905e-06/0.5654, allocations: 2 kB / 0.815 GB, free: 13.85 MB / 0.5762 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.615e-06/0.5654, allocations: 2.812 kB / 0.815 GB, free: 13.85 MB / 0.5762 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0008371/0.5663, allocations: 0.7273 MB / 0.8157 GB, free: 13.51 MB / 0.5762 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001501/0.5664, allocations: 150.2 kB / 0.8159 GB, free: 13.39 MB / 0.5762 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 5.192e-05/0.5665, allocations: 6.344 kB / 0.8159 GB, free: 13.39 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0002296/0.5667, allocations: 31.47 kB / 0.8159 GB, free: 13.38 MB / 0.5762 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 6.138e-05/0.5668, allocations: 23.5 kB / 0.8159 GB, free: 13.38 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.612e-05/0.5668, allocations: 9.906 kB / 0.8159 GB, free: 13.38 MB / 0.5762 GB Notification: Performance of sorting global known variables: time 0.0002304/0.567, allocations: 280.4 kB / 0.8162 GB, free: 13.3 MB / 0.5762 GB Notification: Performance of sort global known variables: time 1.3e-07/0.567, allocations: 0 / 0.8162 GB, free: 13.3 MB / 0.5762 GB Notification: Performance of remove unused functions: time 0.0004056/0.5675, allocations: 119.8 kB / 0.8163 GB, free: 13.29 MB / 0.5762 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * Number of states: 1 (senH.h_out) * 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 (24): * Single equations (assignments): 24 * 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: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.0003409/0.5678, allocations: 173.9 kB / 0.8165 GB, free: 13.18 MB / 0.5762 GB Notification: Performance of simCode: created initialization part: time 0.0004961/0.5683, allocations: 295.4 kB / 0.8168 GB, free: 13.18 MB / 0.5762 GB Notification: Performance of simCode: created event and clocks part: time 2.164e-06/0.5683, allocations: 0 / 0.8168 GB, free: 13.18 MB / 0.5762 GB Notification: Performance of simCode: created simulation system equations: time 0.0002249/0.5685, allocations: 153.7 kB / 0.8169 GB, free: 13.17 MB / 0.5762 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0008624/0.5694, allocations: 203.2 kB / 0.8171 GB, free: 13.16 MB / 0.5762 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001049/0.5705, allocations: 0.9497 MB / 0.818 GB, free: 12.62 MB / 0.5762 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0003172/0.5708, allocations: 0.8433 MB / 0.8189 GB, free: 11.91 MB / 0.5762 GB Notification: Performance of simCode: alias equations: time 0.0002544/0.5711, allocations: 101.1 kB / 0.819 GB, free: 11.89 MB / 0.5762 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 7.6e-05/0.5711, allocations: 34.47 kB / 0.819 GB, free: 11.88 MB / 0.5762 GB Notification: Performance of SimCode: time 2.31e-07/0.5712, allocations: 0 / 0.819 GB, free: 11.88 MB / 0.5762 GB Notification: Performance of Templates: time 0.00968/0.5808, allocations: 6.981 MB / 0.8258 GB, free: 10.88 MB / 0.5762 GB make -j1 -f BuildingSystems_BuildingSystems.Fluid.Sensors.Examples.MoistAirEnthalpyFlowRate.makefile Environment - environmentSimulation: (rm -f BuildingSystems_BuildingSystems.Fluid.Sensors.Examples.MoistAirEnthalpyFlowRate.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.Sensors.Examples.MoistAirEnthalpyFlowRate.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.Sensors.Examples.MoistAirEnthalpyFlowRate.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.Sensors.Examples.MoistAirEnthalpyFlowRate.sim & ./BuildingSystems_BuildingSystems.Fluid.Sensors.Examples.MoistAirEnthalpyFlowRate -abortSlowSimulation -alarm=480 -lv LOG_STATS > BuildingSystems_BuildingSystems.Fluid.Sensors.Examples.MoistAirEnthalpyFlowRate.pipe 2>&1) Environment - environmentSimulation: