Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.BoundaryConditions.SolarIrradiation.Examples.DirectTiltedSurface.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 8.1.4-maint.8.1.x/package.mo", uses=false) Using package Buildings with version 8.1.4 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.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.BoundaryConditions.SolarIrradiation.Examples.DirectTiltedSurface,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.BoundaryConditions.SolarIrradiation.Examples.DirectTiltedSurface") translateModel(Buildings.BoundaryConditions.SolarIrradiation.Examples.DirectTiltedSurface,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.BoundaryConditions.SolarIrradiation.Examples.DirectTiltedSurface") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0011/0.001101, allocations: 97.41 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 0.009846/0.009846, allocations: 170.8 kB / 16.27 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 1.48/1.48, allocations: 205.4 MB / 222.4 MB, free: 5.562 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo): time 1.672/1.672, allocations: 292.7 MB / 0.5502 GB, free: 14.47 MB / 462.1 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 0.0005174/0.0005176, allocations: 12.34 kB / 0.6743 GB, free: 25.89 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2484/0.249, allocations: 116.3 MB / 0.7879 GB, free: 11.58 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.BoundaryConditions.SolarIrradiation.Examples.DirectTiltedSurface): time 0.00581/0.2548, allocations: 4.559 MB / 0.7923 GB, free: 6.992 MB / 0.6075 GB Notification: Performance of NFInst.instExpressions: time 0.6828/0.9376, allocations: 146.6 MB / 0.9355 GB, free: 1.453 MB / 0.7169 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0006984/0.9383, allocations: 18.06 kB / 0.9355 GB, free: 1.449 MB / 0.7169 GB Notification: Performance of NFTyping.typeComponents: time 0.0004422/0.9388, allocations: 155.5 kB / 0.9357 GB, free: 1.379 MB / 0.7169 GB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/BoundaryConditions/WeatherData/BaseClasses/getHeaderElementTMY3.mo:2:1-105:25:writable] Warning: Pure function ‘Buildings.BoundaryConditions.WeatherData.BaseClasses.getHeaderElementTMY3‘ contains a call to impure function ‘Modelica.Utilities.Streams.readLine‘. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/BoundaryConditions/WeatherData/BaseClasses/getLongitudeTMY3.mo:2:1-48:21:writable] Warning: Pure function ‘Buildings.BoundaryConditions.WeatherData.BaseClasses.getLongitudeTMY3‘ contains a call to impure function ‘Buildings.BoundaryConditions.WeatherData.BaseClasses.getHeaderElementTMY3‘. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/BoundaryConditions/WeatherData/BaseClasses/getLatitudeTMY3.mo:2:1-48:20:writable] Warning: Pure function ‘Buildings.BoundaryConditions.WeatherData.BaseClasses.getLatitudeTMY3‘ contains a call to impure function ‘Buildings.BoundaryConditions.WeatherData.BaseClasses.getHeaderElementTMY3‘. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/BoundaryConditions/WeatherData/BaseClasses/getTimeZoneTMY3.mo:2:1-47:20:writable] Warning: Pure function ‘Buildings.BoundaryConditions.WeatherData.BaseClasses.getTimeZoneTMY3‘ contains a call to impure function ‘Buildings.BoundaryConditions.WeatherData.BaseClasses.getHeaderElementTMY3‘. Notification: Performance of NFTyping.typeBindings: time 0.001188/0.94, allocations: 447.7 kB / 0.9361 GB, free: 1.258 MB / 0.7169 GB Notification: Performance of NFTyping.typeClassSections: time 0.001916/0.9419, allocations: 0.7905 MB / 0.9369 GB, free: 1.199 MB / 0.7169 GB Notification: Performance of NFFlatten.flatten: time 0.001652/0.9436, allocations: 1.44 MB / 0.9383 GB, free: 0.9883 MB / 0.7169 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001163/0.9448, allocations: 1.046 MB / 0.9393 GB, free: 0.7695 MB / 0.7169 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0007653/0.9455, allocations: 436.6 kB / 0.9397 GB, free: 0.7461 MB / 0.7169 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0006081/0.9461, allocations: 485.4 kB / 0.9402 GB, free: 0.7383 MB / 0.7169 GB Notification: Performance of NFPackage.collectConstants: time 0.0001066/0.9463, allocations: 32.69 kB / 0.9402 GB, free: 0.7344 MB / 0.7169 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0007081/0.947, allocations: 296.4 kB / 0.9405 GB, free: 0.7227 MB / 0.7169 GB Notification: Performance of NFScalarize.scalarize: time 0.0002173/0.9472, allocations: 230.2 kB / 0.9407 GB, free: 0.7148 MB / 0.7169 GB Notification: Performance of NFVerifyModel.verify: time 0.000577/0.9478, allocations: 0.6069 MB / 0.9413 GB, free: 16.68 MB / 0.7325 GB Notification: Performance of NFConvertDAE.convert: time 0.00206/0.9499, allocations: 2.009 MB / 0.9433 GB, free: 16.55 MB / 0.7325 GB Notification: Performance of FrontEnd - DAE generated: time 4.569e-06/0.9499, allocations: 0.6562 kB / 0.9433 GB, free: 16.55 MB / 0.7325 GB Notification: Performance of FrontEnd: time 1.172e-06/0.9499, allocations: 0 / 0.9433 GB, free: 16.55 MB / 0.7325 GB Notification: Performance of Transformations before backend: time 3.777e-05/0.9499, allocations: 0 / 0.9433 GB, free: 16.55 MB / 0.7325 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 364 * Number of variables: 364 Notification: Performance of Generate backend data structure: time 0.002856/0.9528, allocations: 1.473 MB / 0.9447 GB, free: 15.68 MB / 0.7325 GB Notification: Performance of prepare preOptimizeDAE: time 4.351e-05/0.9528, allocations: 8.812 kB / 0.9447 GB, free: 15.68 MB / 0.7325 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.00112/0.954, allocations: 249.8 kB / 0.9449 GB, free: 15.59 MB / 0.7325 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001341/0.9553, allocations: 0.8999 MB / 0.9458 GB, free: 15.2 MB / 0.7325 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001766/0.9555, allocations: 136.1 kB / 0.946 GB, free: 15.17 MB / 0.7325 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001901/0.9557, allocations: 138.1 kB / 0.9461 GB, free: 15.17 MB / 0.7325 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.003179/0.9589, allocations: 1.44 MB / 0.9475 GB, free: 14.98 MB / 0.7325 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.635e-05/0.959, allocations: 0.5312 kB / 0.9475 GB, free: 14.98 MB / 0.7325 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001314/0.9591, allocations: 56.62 kB / 0.9475 GB, free: 14.98 MB / 0.7325 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 6.025e-05/0.9592, allocations: 34.75 kB / 0.9476 GB, free: 14.98 MB / 0.7325 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002271/0.9614, allocations: 1.471 MB / 0.949 GB, free: 14.96 MB / 0.7325 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.00634/0.9678, allocations: 3.805 MB / 0.9527 GB, free: 13.93 MB / 0.7325 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001515/0.9693, allocations: 0.9076 MB / 0.9536 GB, free: 13.88 MB / 0.7325 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0006151/0.97, allocations: 375.2 kB / 0.954 GB, free: 13.86 MB / 0.7325 GB Notification: Performance of preOpt evalFunc (simulation): time 8.585e-05/0.9701, allocations: 38.86 kB / 0.954 GB, free: 13.86 MB / 0.7325 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001029/0.9711, allocations: 0.5552 MB / 0.9546 GB, free: 13.78 MB / 0.7325 GB Notification: Performance of pre-optimization done (n=93): time 2.866e-06/0.9711, allocations: 4 kB / 0.9546 GB, free: 13.77 MB / 0.7325 GB Notification: Performance of matching and sorting (n=93): time 0.003404/0.9745, allocations: 1.389 MB / 0.9559 GB, free: 13.55 MB / 0.7325 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001805/0.9747, allocations: 191 kB / 0.9561 GB, free: 13.33 MB / 0.7325 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001079/0.9758, allocations: 0.7475 MB / 0.9568 GB, free: 13.2 MB / 0.7325 GB Notification: Performance of collectPreVariables (initialization): time 8.757e-05/0.9759, allocations: 41.98 kB / 0.9569 GB, free: 13.17 MB / 0.7325 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004857/0.9764, allocations: 0.5816 MB / 0.9574 GB, free: 12.89 MB / 0.7325 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002592/0.9767, allocations: 308.8 kB / 0.9577 GB, free: 12.69 MB / 0.7325 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001404/0.9768, allocations: 82.84 kB / 0.9578 GB, free: 12.67 MB / 0.7325 GB Notification: Performance of setup shared object (initialization): time 0.000141/0.9769, allocations: 339.1 kB / 0.9581 GB, free: 12.37 MB / 0.7325 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0006289/0.9776, allocations: 330.6 kB / 0.9584 GB, free: 12.36 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0007728/0.9784, allocations: 440 kB / 0.9589 GB, free: 12.3 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001428/0.9798, allocations: 0.7713 MB / 0.9596 GB, free: 12.24 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.058e-06/0.9798, allocations: 0.9688 kB / 0.9596 GB, free: 12.24 MB / 0.7325 GB Notification: Performance of matching and sorting (n=113) (initialization): time 0.002287/0.9821, allocations: 1.036 MB / 0.9606 GB, free: 12.11 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 2.283e-05/0.9821, allocations: 4.938 kB / 0.9606 GB, free: 12.11 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.357e-06/0.9822, allocations: 1.594 kB / 0.9606 GB, free: 12.11 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0006179/0.9828, allocations: 91.92 kB / 0.9607 GB, free: 12.09 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008286/0.9836, allocations: 202.1 kB / 0.9609 GB, free: 12.05 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002055/0.9857, allocations: 1.538 MB / 0.9624 GB, free: 10.68 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0008548/0.9866, allocations: 114.7 kB / 0.9625 GB, free: 10.62 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.21e-05/0.9867, allocations: 42.72 kB / 0.9626 GB, free: 10.61 MB / 0.7325 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 5 * Number of states: 0 () * Number of discrete variables: 8 (weaDat.conTim.canRepeatWeatherFile,weaDat.conTimMin.canRepeatWeatherFile,weaDat.conTim.tNext,$PRE.weaDat.conTim.tNext,weaDat.conTimMin.tNext,$PRE.weaDat.conTimMin.tNext,$whenCondition1,$whenCondition2) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (111): * Single equations (assignments): 110 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,2)} Notification: Performance of prepare postOptimizeDAE: time 0.0005981/0.9873, allocations: 324.8 kB / 0.9629 GB, free: 10.47 MB / 0.7325 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001527/0.9874, allocations: 101.6 kB / 0.963 GB, free: 10.42 MB / 0.7325 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002859/0.9903, allocations: 1.299 MB / 0.9642 GB, free: 10.06 MB / 0.7325 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.17e-05/0.9903, allocations: 10.78 kB / 0.9643 GB, free: 10.06 MB / 0.7325 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.105e-06/0.9903, allocations: 0 / 0.9643 GB, free: 10.06 MB / 0.7325 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.299e-05/0.9903, allocations: 3.984 kB / 0.9643 GB, free: 10.05 MB / 0.7325 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003795/0.9941, allocations: 2.485 MB / 0.9667 GB, free: 9.191 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.452e-06/0.9942, allocations: 7.344 kB / 0.9667 GB, free: 9.188 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006844/0.9949, allocations: 180.3 kB / 0.9669 GB, free: 9.152 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004947/0.9954, allocations: 85.27 kB / 0.9669 GB, free: 9.117 MB / 0.7325 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.898e-05/0.9954, allocations: 29.27 kB / 0.967 GB, free: 9.113 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.00178/0.9972, allocations: 1.573 MB / 0.9685 GB, free: 7.734 MB / 0.7325 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.963e-06/0.9972, allocations: 0 / 0.9685 GB, free: 7.734 MB / 0.7325 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001996/0.9992, allocations: 1.12 MB / 0.9696 GB, free: 7.398 MB / 0.7325 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004686/0.9997, allocations: 340.1 kB / 0.9699 GB, free: 7.18 MB / 0.7325 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001197/0.9998, allocations: 23.02 kB / 0.97 GB, free: 7.176 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0006958/1.001, allocations: 79.12 kB / 0.97 GB, free: 7.156 MB / 0.7325 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001345/1.001, allocations: 67.06 kB / 0.9701 GB, free: 7.133 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.458e-05/1.001, allocations: 40.47 kB / 0.9701 GB, free: 7.125 MB / 0.7325 GB Notification: Performance of sorting global known variables: time 0.0007573/1.002, allocations: 0.5493 MB / 0.9707 GB, free: 6.922 MB / 0.7325 GB Notification: Performance of sort global known variables: time 1.4e-07/1.002, allocations: 0 / 0.9707 GB, free: 6.922 MB / 0.7325 GB Notification: Performance of remove unused functions: time 0.001039/1.003, allocations: 382.4 kB / 0.971 GB, free: 6.801 MB / 0.7325 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 4 ($whenCondition2,$whenCondition1,weaDat.conTimMin.tNext,weaDat.conTim.tNext) * Number of discrete states: 2 (weaDat.conTim.tNext,weaDat.conTimMin.tNext) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (107): * Single equations (assignments): 104 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,3)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001201/1.004, allocations: 0.5678 MB / 0.9716 GB, free: 6.535 MB / 0.7325 GB Notification: Performance of simCode: created initialization part: time 0.001745/1.006, allocations: 0.9679 MB / 0.9725 GB, free: 6.035 MB / 0.7325 GB Notification: Performance of simCode: created event and clocks part: time 3.777e-06/1.006, allocations: 3.344 kB / 0.9725 GB, free: 6.035 MB / 0.7325 GB Notification: Performance of simCode: created simulation system equations: time 0.0009487/1.007, allocations: 0.5839 MB / 0.9731 GB, free: 5.707 MB / 0.7325 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001303/1.008, allocations: 283.1 kB / 0.9734 GB, free: 5.562 MB / 0.7325 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004863/1.013, allocations: 3.044 MB / 0.9763 GB, free: 3.535 MB / 0.7325 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0008163/1.014, allocations: 1.162 MB / 0.9775 GB, free: 2.637 MB / 0.7325 GB Notification: Performance of simCode: alias equations: time 0.0009054/1.014, allocations: 291.3 kB / 0.9778 GB, free: 2.496 MB / 0.7325 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002937/1.015, allocations: 126 kB / 0.9779 GB, free: 2.453 MB / 0.7325 GB Notification: Performance of SimCode: time 2.61e-07/1.015, allocations: 0 / 0.9779 GB, free: 2.453 MB / 0.7325 GB Notification: Performance of Templates: time 0.02768/1.042, allocations: 16.06 MB / 0.9936 GB, free: 10.46 MB / 0.7481 GB make -j1 -f Buildings_8_Buildings.BoundaryConditions.SolarIrradiation.Examples.DirectTiltedSurface.makefile Environment - environmentSimulation: (rm -f Buildings_8_Buildings.BoundaryConditions.SolarIrradiation.Examples.DirectTiltedSurface.pipe ; mkfifo Buildings_8_Buildings.BoundaryConditions.SolarIrradiation.Examples.DirectTiltedSurface.pipe ; head -c 1048576 < Buildings_8_Buildings.BoundaryConditions.SolarIrradiation.Examples.DirectTiltedSurface.pipe >> ../files/Buildings_8_Buildings.BoundaryConditions.SolarIrradiation.Examples.DirectTiltedSurface.sim & ./Buildings_8_Buildings.BoundaryConditions.SolarIrradiation.Examples.DirectTiltedSurface -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8_Buildings.BoundaryConditions.SolarIrradiation.Examples.DirectTiltedSurface.pipe 2>&1) Environment - environmentSimulation: