Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr BuildingSystems_BuildingSystems.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile.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.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile,fileNamePrefix="BuildingSystems_BuildingSystems_Airflow_Multizone_BaseClasses_Examples_WindPressureProfile",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(BuildingSystems.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile,fileNamePrefix="BuildingSystems_BuildingSystems_Airflow_Multizone_BaseClasses_Examples_WindPressureProfile",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 0.001406/0.001406, allocations: 99.62 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 0.001454/0.001454, allocations: 177.3 kB / 15.95 MB, free: 216 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 2.297/2.297, allocations: 223.2 MB / 239.9 MB, free: 5.457 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.002701/0.0027, allocations: 273.9 kB / 291.2 MB, free: 2.023 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 1.812/1.812, allocations: 144.6 MB / 487 MB, free: 7.191 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0006736/0.0006738, allocations: 15.31 kB / 0.5684 GB, free: 38.37 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2806/0.2813, allocations: 83.08 MB / 0.6495 GB, free: 3.512 MB / 446.1 MB Notification: Performance of NFInst.instantiate(BuildingSystems.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile): time 0.002547/0.284, allocations: 1.154 MB / 0.6507 GB, free: 2.344 MB / 446.1 MB Notification: Performance of NFInst.instExpressions: time 0.002191/0.2862, allocations: 0.818 MB / 0.6515 GB, free: 1.527 MB / 446.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 6.948e-05/0.2863, allocations: 0 / 0.6515 GB, free: 1.527 MB / 446.1 MB Notification: Performance of NFTyping.typeComponents: time 0.0002561/0.2866, allocations: 7.984 kB / 0.6515 GB, free: 1.52 MB / 446.1 MB Notification: Performance of NFTyping.typeBindings: time 0.0007534/0.2873, allocations: 110.1 kB / 0.6516 GB, free: 1.418 MB / 446.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.0002654/0.2876, allocations: 71.84 kB / 0.6516 GB, free: 1.348 MB / 446.1 MB Notification: Performance of NFFlatten.flatten: time 0.000121/0.2877, allocations: 40.44 kB / 0.6517 GB, free: 1.309 MB / 446.1 MB Notification: Performance of NFFlatten.resolveConnections: time 6.629e-05/0.2878, allocations: 0.6562 kB / 0.6517 GB, free: 1.309 MB / 446.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.000126/0.288, allocations: 36.42 kB / 0.6517 GB, free: 1.273 MB / 446.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.000176/0.2881, allocations: 45.59 kB / 0.6518 GB, free: 1.23 MB / 446.1 MB Notification: Performance of NFPackage.collectConstants: time 1.857e-05/0.2882, allocations: 0 / 0.6518 GB, free: 1.23 MB / 446.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0004215/0.2886, allocations: 199.6 kB / 0.6519 GB, free: 1.035 MB / 446.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0001124/0.2887, allocations: 52.64 kB / 0.652 GB, free: 0.9844 MB / 446.1 MB Notification: Performance of NFVerifyModel.verify: time 6.312e-05/0.2888, allocations: 45.58 kB / 0.652 GB, free: 0.9336 MB / 446.1 MB Notification: Performance of NFConvertDAE.convert: time 0.0003616/0.2892, allocations: 189 kB / 0.6522 GB, free: 0.75 MB / 446.1 MB Notification: Performance of FrontEnd - DAE generated: time 4.348e-06/0.2892, allocations: 0 / 0.6522 GB, free: 0.75 MB / 446.1 MB Notification: Performance of FrontEnd: time 2.184e-06/0.2892, allocations: 0 / 0.6522 GB, free: 0.75 MB / 446.1 MB Notification: Performance of Transformations before backend: time 7.094e-06/0.2892, allocations: 0.5625 kB / 0.6522 GB, free: 0.75 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 0.001037/0.2903, allocations: 497 kB / 0.6527 GB, free: 224 kB / 446.1 MB Notification: Performance of prepare preOptimizeDAE: time 6.588e-05/0.2903, allocations: 8.031 kB / 0.6527 GB, free: 216 kB / 446.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 6.362e-05/0.2904, allocations: 30.56 kB / 0.6527 GB, free: 176 kB / 446.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 6.82e-05/0.2905, allocations: 15.81 kB / 0.6527 GB, free: 160 kB / 446.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001202/0.2917, allocations: 0.6429 MB / 0.6534 GB, free: 15.48 MB / 462.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.607e-05/0.2917, allocations: 7.891 kB / 0.6534 GB, free: 15.47 MB / 462.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 1.579e-05/0.2918, allocations: 5.25 kB / 0.6534 GB, free: 15.46 MB / 462.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.000263/0.292, allocations: 74.27 kB / 0.6535 GB, free: 15.39 MB / 462.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.166e-05/0.292, allocations: 4.531 kB / 0.6535 GB, free: 15.38 MB / 462.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 1.345e-05/0.2921, allocations: 0 / 0.6535 GB, free: 15.38 MB / 462.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 9.138e-06/0.2921, allocations: 4.531 kB / 0.6535 GB, free: 15.38 MB / 462.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0002872/0.2924, allocations: 90.11 kB / 0.6536 GB, free: 15.29 MB / 462.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0005356/0.2929, allocations: 327.1 kB / 0.6539 GB, free: 14.93 MB / 462.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.0003764/0.2933, allocations: 119.9 kB / 0.654 GB, free: 14.8 MB / 462.1 MB Notification: Performance of preOpt evalFunc (simulation): time 7.301e-05/0.2934, allocations: 20.72 kB / 0.654 GB, free: 14.78 MB / 462.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.212e-05/0.2935, allocations: 35.38 kB / 0.654 GB, free: 14.74 MB / 462.1 MB Notification: Performance of pre-optimization done (n=3): time 1.302e-06/0.2935, allocations: 0.7188 kB / 0.654 GB, free: 14.74 MB / 462.1 MB Notification: Performance of matching and sorting (n=3): time 0.0006098/0.2941, allocations: 189 kB / 0.6542 GB, free: 14.55 MB / 462.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 6.186e-05/0.2942, allocations: 51.41 kB / 0.6543 GB, free: 14.49 MB / 462.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001045/0.2952, allocations: 0.7742 MB / 0.655 GB, free: 13.71 MB / 462.1 MB Notification: Performance of collectPreVariables (initialization): time 2.677e-05/0.2953, allocations: 30.2 kB / 0.655 GB, free: 13.67 MB / 462.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0001468/0.2954, allocations: 124.7 kB / 0.6552 GB, free: 13.55 MB / 462.1 MB Notification: Performance of collectInitialBindings (initialization): time 3.615e-05/0.2955, allocations: 13.92 kB / 0.6552 GB, free: 13.54 MB / 462.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 4.448e-06/0.2955, allocations: 0 / 0.6552 GB, free: 13.54 MB / 462.1 MB Notification: Performance of setup shared object (initialization): time 0.000328/0.2958, allocations: 330.8 kB / 0.6555 GB, free: 13.2 MB / 462.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001422/0.296, allocations: 49.09 kB / 0.6555 GB, free: 13.16 MB / 462.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.00018/0.2961, allocations: 68.97 kB / 0.6556 GB, free: 13.08 MB / 462.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.0001495/0.2963, allocations: 50.52 kB / 0.6557 GB, free: 13.04 MB / 462.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.637e-06/0.2963, allocations: 0 / 0.6557 GB, free: 13.04 MB / 462.1 MB Notification: Performance of matching and sorting (n=3) (initialization): time 0.0003405/0.2967, allocations: 143.5 kB / 0.6558 GB, free: 12.89 MB / 462.1 MB Notification: Performance of prepare postOptimizeDAE: time 2.668e-05/0.2967, allocations: 7.984 kB / 0.6558 GB, free: 12.88 MB / 462.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.081e-05/0.2967, allocations: 4 kB / 0.6558 GB, free: 12.88 MB / 462.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 1.989e-05/0.2968, allocations: 0 / 0.6558 GB, free: 12.88 MB / 462.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 9.768e-05/0.2969, allocations: 10.34 kB / 0.6558 GB, free: 12.87 MB / 462.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 8.886e-06/0.2969, allocations: 0 / 0.6558 GB, free: 12.87 MB / 462.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0001403/0.297, allocations: 11.98 kB / 0.6558 GB, free: 12.86 MB / 462.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.476e-06/0.2971, allocations: 4.656 kB / 0.6558 GB, free: 12.86 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 (3): * Single equations (assignments): 3 * 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 0.0001578/0.2972, allocations: 126.6 kB / 0.656 GB, free: 12.72 MB / 462.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 3.761e-05/0.2973, allocations: 31.64 kB / 0.656 GB, free: 12.69 MB / 462.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0004101/0.2977, allocations: 146.9 kB / 0.6561 GB, free: 12.54 MB / 462.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.507e-06/0.2977, allocations: 3.938 kB / 0.6561 GB, free: 12.54 MB / 462.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.831e-06/0.2977, allocations: 0 / 0.6561 GB, free: 12.54 MB / 462.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.889e-06/0.2977, allocations: 4 kB / 0.6561 GB, free: 12.53 MB / 462.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0002948/0.298, allocations: 225.6 kB / 0.6563 GB, free: 12.26 MB / 462.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.623e-06/0.2981, allocations: 7.938 kB / 0.6564 GB, free: 12.25 MB / 462.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 8.973e-05/0.2982, allocations: 19.98 kB / 0.6564 GB, free: 12.23 MB / 462.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 2.385e-06/0.2982, allocations: 0 / 0.6564 GB, free: 12.23 MB / 462.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.556e-05/0.2982, allocations: 7.953 kB / 0.6564 GB, free: 12.23 MB / 462.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 2.264e-06/0.2982, allocations: 0 / 0.6564 GB, free: 12.23 MB / 462.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.543e-06/0.2982, allocations: 0 / 0.6564 GB, free: 12.23 MB / 462.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0004045/0.2986, allocations: 168.8 kB / 0.6565 GB, free: 12.04 MB / 462.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0001146/0.2987, allocations: 96.91 kB / 0.6566 GB, free: 11.93 MB / 462.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 3.302e-05/0.2988, allocations: 0 / 0.6566 GB, free: 11.93 MB / 462.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0001051/0.2989, allocations: 19.94 kB / 0.6567 GB, free: 11.91 MB / 462.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 5.433e-05/0.299, allocations: 4 kB / 0.6567 GB, free: 11.91 MB / 462.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.084e-06/0.299, allocations: 7.984 kB / 0.6567 GB, free: 11.9 MB / 462.1 MB Notification: Performance of sorting global known variables: time 0.0008305/0.2998, allocations: 0.6136 MB / 0.6573 GB, free: 11.29 MB / 462.1 MB Notification: Performance of sort global known variables: time 2.2e-07/0.2998, allocations: 0 / 0.6573 GB, free: 11.29 MB / 462.1 MB Notification: Performance of remove unused functions: time 0.0005506/0.3004, allocations: 75.98 kB / 0.6573 GB, free: 11.21 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 (3): * Single equations (assignments): 3 * 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 0.00108/0.3015, allocations: 0.7565 MB / 0.6581 GB, free: 10.43 MB / 462.1 MB Notification: Performance of simCode: created initialization part: time 0.0003753/0.3019, allocations: 103.9 kB / 0.6582 GB, free: 10.32 MB / 462.1 MB Notification: Performance of simCode: created event and clocks part: time 2.835e-06/0.3019, allocations: 0 / 0.6582 GB, free: 10.32 MB / 462.1 MB Notification: Performance of simCode: created simulation system equations: time 0.0001544/0.302, allocations: 43.97 kB / 0.6582 GB, free: 10.28 MB / 462.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0003081/0.3024, allocations: 18.39 kB / 0.6582 GB, free: 10.27 MB / 462.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004621/0.307, allocations: 2.456 MB / 0.6606 GB, free: 7.762 MB / 462.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.00055/0.3076, allocations: 0.7243 MB / 0.6613 GB, free: 7.012 MB / 462.1 MB Notification: Performance of simCode: alias equations: time 0.0001342/0.3077, allocations: 32.59 kB / 0.6614 GB, free: 6.98 MB / 462.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001233/0.3079, allocations: 51.42 kB / 0.6614 GB, free: 6.93 MB / 462.1 MB Notification: Performance of SimCode: time 1.172e-06/0.3079, allocations: 0 / 0.6614 GB, free: 6.93 MB / 462.1 MB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.0261/0.334, allocations: 4.426 MB / 0.6657 GB, free: 2.707 MB / 462.1 MB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0003463/0.3344, allocations: 210.3 kB / 0.6659 GB, free: 2.469 MB / 462.1 MB Notification: Performance of buildModelFMU: Generate platform static: time 2.841/3.175, allocations: 0 / 0.6659 GB, free: 2.469 MB / 462.1 MB (rm -f BuildingSystems_BuildingSystems.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile.pipe ; mkfifo BuildingSystems_BuildingSystems.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile.pipe >> ../files/BuildingSystems_BuildingSystems.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator --tempDir=temp_BuildingSystems_BuildingSystems_Airflow_Multizone_BaseClasses_Examples_WindPressureProfile_fmu --startTime=0 --stopTime=500 --timeout=50 --tolerance=1e-06 BuildingSystems_BuildingSystems_Airflow_Multizone_BaseClasses_Examples_WindPressureProfile.fmu > BuildingSystems_BuildingSystems.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile.pipe 2>&1) Environment - environmentSimulation: