Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr BuildingSystems_BuildingSystems.Utilities.Math.Examples.RegNonZeroPower.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: "" <> buildModelFMU(BuildingSystems.Utilities.Math.Examples.RegNonZeroPower,fileNamePrefix="BuildingSystems_BuildingSystems_Utilities_Math_Examples_RegNonZeroPower",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(BuildingSystems.Utilities.Math.Examples.RegNonZeroPower,fileNamePrefix="BuildingSystems_BuildingSystems_Utilities_Math_Examples_RegNonZeroPower",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 0.000864/0.000864, allocations: 87.42 kB / 15.07 MB, free: 1.082 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001026/0.001026, allocations: 168.7 kB / 15.95 MB, free: 200 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.309/1.309, allocations: 223.3 MB / 240 MB, free: 5.418 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.001656/0.001656, allocations: 269.6 kB / 291.3 MB, free: 1.977 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 0.7946/0.7946, allocations: 144.7 MB / 487.2 MB, free: 7.16 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0006411/0.0006412, allocations: 26.45 kB / 0.5686 GB, free: 38.25 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1568/0.1574, allocations: 83.08 MB / 0.6497 GB, free: 3.477 MB / 446.1 MB Notification: Performance of NFInst.instantiate(BuildingSystems.Utilities.Math.Examples.RegNonZeroPower): time 0.001542/0.159, allocations: 1.146 MB / 0.6508 GB, free: 2.32 MB / 446.1 MB Notification: Performance of NFInst.instExpressions: time 0.0006583/0.1597, allocations: 352.1 kB / 0.6512 GB, free: 1.977 MB / 446.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 3.184e-05/0.1598, allocations: 0 / 0.6512 GB, free: 1.977 MB / 446.1 MB Notification: Performance of NFTyping.typeComponents: time 1.697e-05/0.1598, allocations: 3.438 kB / 0.6512 GB, free: 1.977 MB / 446.1 MB Notification: Performance of NFTyping.typeBindings: time 4.479e-05/0.1598, allocations: 3.938 kB / 0.6512 GB, free: 1.973 MB / 446.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.0003944/0.1602, allocations: 71.84 kB / 0.6513 GB, free: 1.902 MB / 446.1 MB Notification: Performance of NFFlatten.flatten: time 6.588e-05/0.1603, allocations: 23.92 kB / 0.6513 GB, free: 1.879 MB / 446.1 MB Notification: Performance of NFFlatten.resolveConnections: time 7.09e-05/0.1604, allocations: 4 kB / 0.6513 GB, free: 1.875 MB / 446.1 MB Notification: Performance of NFEvalConstants.evaluate: time 3.762e-05/0.1604, allocations: 16.55 kB / 0.6513 GB, free: 1.859 MB / 446.1 MB Notification: Performance of NFSimplifyModel.simplify: time 3.398e-05/0.1605, allocations: 11.92 kB / 0.6513 GB, free: 1.848 MB / 446.1 MB Notification: Performance of NFPackage.collectConstants: time 1.081e-05/0.1605, allocations: 0.6562 kB / 0.6513 GB, free: 1.848 MB / 446.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0003455/0.1608, allocations: 268.2 kB / 0.6516 GB, free: 1.586 MB / 446.1 MB Notification: Performance of NFScalarize.scalarize: time 1.047e-05/0.1609, allocations: 7.938 kB / 0.6516 GB, free: 1.578 MB / 446.1 MB Notification: Performance of NFVerifyModel.verify: time 2.406e-05/0.1609, allocations: 28.14 kB / 0.6516 GB, free: 1.547 MB / 446.1 MB Notification: Performance of NFConvertDAE.convert: time 0.0001451/0.161, allocations: 71.86 kB / 0.6517 GB, free: 1.477 MB / 446.1 MB Notification: Performance of FrontEnd - DAE generated: time 4.799e-06/0.1611, allocations: 0 / 0.6517 GB, free: 1.477 MB / 446.1 MB Notification: Performance of FrontEnd: time 1.533e-06/0.1611, allocations: 0 / 0.6517 GB, free: 1.477 MB / 446.1 MB Notification: Performance of Transformations before backend: time 6.622e-06/0.1611, allocations: 0 / 0.6517 GB, free: 1.477 MB / 446.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 3 * Number of variables: 3 Notification: Performance of Generate backend data structure: time 0.0004269/0.1615, allocations: 363.2 kB / 0.652 GB, free: 1.078 MB / 446.1 MB Notification: Performance of prepare preOptimizeDAE: time 3.718e-05/0.1615, allocations: 8.031 kB / 0.652 GB, free: 1.07 MB / 446.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 3.406e-05/0.1616, allocations: 38.55 kB / 0.6521 GB, free: 1.023 MB / 446.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 4.409e-05/0.1616, allocations: 5.188 kB / 0.6521 GB, free: 1.02 MB / 446.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.000109/0.1618, allocations: 163 kB / 0.6522 GB, free: 0.8203 MB / 446.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 9.708e-06/0.1618, allocations: 3.953 kB / 0.6522 GB, free: 0.8164 MB / 446.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 1.072e-05/0.1618, allocations: 4.906 kB / 0.6522 GB, free: 0.8125 MB / 446.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0001674/0.162, allocations: 63.5 kB / 0.6523 GB, free: 0.7461 MB / 446.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 8.716e-06/0.162, allocations: 0 / 0.6523 GB, free: 0.7461 MB / 446.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 7.384e-06/0.162, allocations: 3.938 kB / 0.6523 GB, free: 0.7422 MB / 446.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.848e-06/0.162, allocations: 0 / 0.6523 GB, free: 0.7422 MB / 446.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0001637/0.1622, allocations: 46.2 kB / 0.6523 GB, free: 0.6992 MB / 446.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0003189/0.1625, allocations: 254.7 kB / 0.6526 GB, free: 412 kB / 446.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.0001325/0.1626, allocations: 43.92 kB / 0.6526 GB, free: 360 kB / 446.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 8.142e-05/0.1627, allocations: 30.34 kB / 0.6526 GB, free: 328 kB / 446.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0006037/0.1633, allocations: 460.8 kB / 0.6531 GB, free: 15.78 MB / 462.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.583e-05/0.1634, allocations: 31.75 kB / 0.6531 GB, free: 15.74 MB / 462.1 MB Notification: Performance of pre-optimization done (n=2): time 2.154e-06/0.1634, allocations: 2.562 kB / 0.6531 GB, free: 15.74 MB / 462.1 MB Notification: Performance of matching and sorting (n=2): time 0.0003447/0.1637, allocations: 99.17 kB / 0.6532 GB, free: 15.64 MB / 462.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 2.996e-05/0.1638, allocations: 51.41 kB / 0.6533 GB, free: 15.58 MB / 462.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 6.166e-05/0.1638, allocations: 111.2 kB / 0.6534 GB, free: 15.46 MB / 462.1 MB Notification: Performance of collectPreVariables (initialization): time 1.07e-05/0.1639, allocations: 25.7 kB / 0.6534 GB, free: 15.43 MB / 462.1 MB Notification: Performance of collectInitialEqns (initialization): time 3.906e-05/0.1639, allocations: 89.77 kB / 0.6535 GB, free: 15.34 MB / 462.1 MB Notification: Performance of collectInitialBindings (initialization): time 1.364e-05/0.1639, allocations: 3.906 kB / 0.6535 GB, free: 15.34 MB / 462.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 2.935e-06/0.1639, allocations: 0 / 0.6535 GB, free: 15.34 MB / 462.1 MB Notification: Performance of setup shared object (initialization): time 9.36e-05/0.164, allocations: 318.8 kB / 0.6538 GB, free: 15.02 MB / 462.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 7.654e-05/0.1641, allocations: 30.95 kB / 0.6538 GB, free: 14.99 MB / 462.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 6.387e-05/0.1642, allocations: 15.98 kB / 0.6538 GB, free: 14.97 MB / 462.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 7.06e-05/0.1643, allocations: 26.48 kB / 0.6539 GB, free: 14.95 MB / 462.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.723e-06/0.1643, allocations: 0 / 0.6539 GB, free: 14.95 MB / 462.1 MB Notification: Performance of matching and sorting (n=2) (initialization): time 0.000199/0.1645, allocations: 79.34 kB / 0.6539 GB, free: 14.87 MB / 462.1 MB Notification: Performance of prepare postOptimizeDAE: time 1.342e-05/0.1645, allocations: 9.312 kB / 0.6539 GB, free: 14.86 MB / 462.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.508e-06/0.1645, allocations: 0 / 0.6539 GB, free: 14.86 MB / 462.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 1.013e-05/0.1645, allocations: 3.938 kB / 0.6539 GB, free: 14.86 MB / 462.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 7.593e-05/0.1646, allocations: 11.98 kB / 0.654 GB, free: 14.84 MB / 462.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 4.348e-06/0.1646, allocations: 0 / 0.654 GB, free: 14.84 MB / 462.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 4.34e-05/0.1647, allocations: 11.98 kB / 0.654 GB, free: 14.83 MB / 462.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.442e-06/0.1647, allocations: 4 kB / 0.654 GB, free: 14.83 MB / 462.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 1 * 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 (2): * Single equations (assignments): 2 * 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 6.601e-05/0.1648, allocations: 117.8 kB / 0.6541 GB, free: 14.7 MB / 462.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 3.897e-05/0.1648, allocations: 3.906 kB / 0.6541 GB, free: 14.7 MB / 462.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0002104/0.165, allocations: 85.12 kB / 0.6542 GB, free: 14.61 MB / 462.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.923e-06/0.165, allocations: 0 / 0.6542 GB, free: 14.61 MB / 462.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 5e-06/0.165, allocations: 4.031 kB / 0.6542 GB, free: 14.61 MB / 462.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.276e-06/0.1651, allocations: 7.938 kB / 0.6542 GB, free: 14.6 MB / 462.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0001413/0.1652, allocations: 161.6 kB / 0.6543 GB, free: 14.39 MB / 462.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 9.82e-07/0.1652, allocations: 0 / 0.6543 GB, free: 14.39 MB / 462.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 5.401e-05/0.1653, allocations: 11.98 kB / 0.6543 GB, free: 14.38 MB / 462.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 2.494e-06/0.1653, allocations: 0 / 0.6543 GB, free: 14.38 MB / 462.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.861e-06/0.1653, allocations: 0 / 0.6543 GB, free: 14.38 MB / 462.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 3.456e-06/0.1653, allocations: 4 kB / 0.6543 GB, free: 14.38 MB / 462.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.162e-06/0.1653, allocations: 0 / 0.6543 GB, free: 14.38 MB / 462.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0002296/0.1655, allocations: 175.5 kB / 0.6545 GB, free: 14.19 MB / 462.1 MB Notification: Performance of postOpt removeConstants (simulation): time 4.058e-05/0.1656, allocations: 92.91 kB / 0.6546 GB, free: 14.08 MB / 462.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 1.28e-05/0.1656, allocations: 0 / 0.6546 GB, free: 14.08 MB / 462.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 7.162e-05/0.1657, allocations: 12.02 kB / 0.6546 GB, free: 14.07 MB / 462.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 3.791e-05/0.1657, allocations: 4 kB / 0.6546 GB, free: 14.06 MB / 462.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.427e-06/0.1657, allocations: 0 / 0.6546 GB, free: 14.06 MB / 462.1 MB Notification: Performance of sorting global known variables: time 4.429e-05/0.1658, allocations: 91.52 kB / 0.6547 GB, free: 13.97 MB / 462.1 MB Notification: Performance of sort global known variables: time 1.2e-07/0.1658, allocations: 0 / 0.6547 GB, free: 13.97 MB / 462.1 MB Notification: Performance of remove unused functions: time 0.000231/0.166, allocations: 16 kB / 0.6547 GB, free: 13.96 MB / 462.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * 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 (2): * Single equations (assignments): 2 * 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 0.0005555/0.1666, allocations: 0.7124 MB / 0.6554 GB, free: 13.22 MB / 462.1 MB Notification: Performance of simCode: created initialization part: time 0.0002029/0.1668, allocations: 59.92 kB / 0.6555 GB, free: 13.16 MB / 462.1 MB Notification: Performance of simCode: created event and clocks part: time 1.733e-06/0.1668, allocations: 0 / 0.6555 GB, free: 13.16 MB / 462.1 MB Notification: Performance of simCode: created simulation system equations: time 7.797e-05/0.1669, allocations: 19.98 kB / 0.6555 GB, free: 13.14 MB / 462.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0002629/0.1672, allocations: 4.125 kB / 0.6555 GB, free: 13.14 MB / 462.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.000402/0.1676, allocations: 150.4 kB / 0.6556 GB, free: 12.95 MB / 462.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0002477/0.1678, allocations: 0.677 MB / 0.6563 GB, free: 12.25 MB / 462.1 MB Notification: Performance of simCode: alias equations: time 2.414e-05/0.1679, allocations: 3.938 kB / 0.6563 GB, free: 12.24 MB / 462.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 3.444e-05/0.1679, allocations: 15.42 kB / 0.6563 GB, free: 12.23 MB / 462.1 MB Notification: Performance of SimCode: time 2.21e-07/0.1679, allocations: 0 / 0.6563 GB, free: 12.23 MB / 462.1 MB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.01187/0.1798, allocations: 1.336 MB / 0.6576 GB, free: 11.03 MB / 462.1 MB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0002245/0.1801, allocations: 200.4 kB / 0.6578 GB, free: 10.79 MB / 462.1 MB Notification: Performance of buildModelFMU: Generate platform static: time 1.603/1.783, allocations: 0 / 0.6578 GB, free: 10.79 MB / 462.1 MB (rm -f BuildingSystems_BuildingSystems.Utilities.Math.Examples.RegNonZeroPower.pipe ; mkfifo BuildingSystems_BuildingSystems.Utilities.Math.Examples.RegNonZeroPower.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Utilities.Math.Examples.RegNonZeroPower.pipe >> ../files/BuildingSystems_BuildingSystems.Utilities.Math.Examples.RegNonZeroPower.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator --tempDir=temp_BuildingSystems_BuildingSystems_Utilities_Math_Examples_RegNonZeroPower_fmu --startTime=0 --stopTime=1 --timeout=50 --tolerance=1e-06 BuildingSystems_BuildingSystems_Utilities_Math_Examples_RegNonZeroPower.fmu > BuildingSystems_BuildingSystems.Utilities.Math.Examples.RegNonZeroPower.pipe 2>&1) Environment - environmentSimulation: