Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Machines.TestWaterPumpPowerCharacteristic.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/ModelicaTest 3.2.2+maint.om/package.mo", uses=false) Using package ModelicaTest with version 3.2.2 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 3.2.2+maint.om/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(ModelicaTest.Fluid.TestComponents.Machines.TestWaterPumpPowerCharacteristic,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Machines.TestWaterPumpPowerCharacteristic") translateModel(ModelicaTest.Fluid.TestComponents.Machines.TestWaterPumpPowerCharacteristic,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Machines.TestWaterPumpPowerCharacteristic") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0009601/0.00096, allocations: 99.31 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 0.001001/0.001001, 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 3.2.3+maint.om/package.mo): time 1.295/1.295, allocations: 205.4 MB / 222.1 MB, free: 5.652 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 3.2.2+maint.om/package.mo): time 0.2853/0.2853, allocations: 40 MB / 310.4 MB, free: 9.629 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: ModelicaTest requested package Modelica of version 3.2.2. Modelica 3.2.3 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.0005213/0.0005214, allocations: 14.97 kB / 378.8 MB, free: 12.37 MB / 318.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.09572/0.09625, allocations: 57.95 MB / 436.8 MB, free: 2.312 MB / 366.1 MB Notification: Performance of NFInst.instantiate(ModelicaTest.Fluid.TestComponents.Machines.TestWaterPumpPowerCharacteristic): time 0.2059/0.3022, allocations: 35.41 MB / 472.2 MB, free: 33.75 MB / 382.1 MB Notification: Performance of NFInst.instExpressions: time 0.01628/0.3185, allocations: 17.36 MB / 489.5 MB, free: 21.95 MB / 382.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.000862/0.3194, allocations: 26.72 kB / 489.6 MB, free: 21.93 MB / 382.1 MB Notification: Performance of NFTyping.typeComponents: time 0.001128/0.3205, allocations: 428.4 kB / 490 MB, free: 21.7 MB / 382.1 MB Notification: Performance of NFTyping.typeBindings: time 0.01074/0.3313, allocations: 4.076 MB / 494.1 MB, free: 19.67 MB / 382.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.007317/0.3386, allocations: 2.925 MB / 497 MB, free: 18.2 MB / 382.1 MB Notification: Performance of NFFlatten.flatten: time 0.001608/0.3402, allocations: 1.023 MB / 498 MB, free: 17.67 MB / 382.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0004877/0.3407, allocations: 378.8 kB / 498.4 MB, free: 17.54 MB / 382.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.001018/0.3418, allocations: 0.6574 MB / 499 MB, free: 17.23 MB / 382.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.008287/0.3501, allocations: 5.834 MB / 0.493 GB, free: 16.61 MB / 382.1 MB Notification: Performance of NFPackage.collectConstants: time 0.0001716/0.3503, allocations: 31.88 kB / 0.4931 GB, free: 16.61 MB / 382.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.01406/0.3643, allocations: 7.642 MB / 0.5005 GB, free: 14.92 MB / 382.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0002612/0.3646, allocations: 151.8 kB / 0.5007 GB, free: 14.84 MB / 382.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0003078/0.3649, allocations: 172.2 kB / 0.5008 GB, free: 14.75 MB / 382.1 MB Notification: Performance of NFConvertDAE.convert: time 0.007063/0.372, allocations: 3.589 MB / 0.5043 GB, free: 14.01 MB / 382.1 MB Notification: Performance of FrontEnd - DAE generated: time 2.274e-06/0.372, allocations: 1.281 kB / 0.5044 GB, free: 14.01 MB / 382.1 MB Notification: Performance of FrontEnd: time 1.623e-06/0.372, allocations: 0 / 0.5044 GB, free: 14.01 MB / 382.1 MB Notification: Performance of Transformations before backend: time 8.546e-06/0.372, allocations: 0 / 0.5044 GB, free: 14.01 MB / 382.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 142 * Number of variables: 142 Notification: Performance of Generate backend data structure: time 0.004846/0.3769, allocations: 1.553 MB / 0.5059 GB, free: 12.9 MB / 382.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.031e-05/0.3769, allocations: 13.2 kB / 0.5059 GB, free: 12.9 MB / 382.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002074/0.379, allocations: 308 kB / 0.5062 GB, free: 12.78 MB / 382.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0006358/0.3797, allocations: 0.5135 MB / 0.5067 GB, free: 12.32 MB / 382.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.468e-05/0.3797, allocations: 50.38 kB / 0.5067 GB, free: 12.3 MB / 382.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 8.306e-05/0.3798, allocations: 56.89 kB / 0.5068 GB, free: 12.28 MB / 382.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002066/0.3819, allocations: 1.002 MB / 0.5078 GB, free: 11.64 MB / 382.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.938e-05/0.3819, allocations: 13.84 kB / 0.5078 GB, free: 11.63 MB / 382.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.192e-05/0.382, allocations: 26.47 kB / 0.5078 GB, free: 11.61 MB / 382.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.776e-05/0.382, allocations: 24.12 kB / 0.5078 GB, free: 11.61 MB / 382.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002182/0.3842, allocations: 0.921 MB / 0.5087 GB, free: 11.18 MB / 382.1 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 0.003607/0.3878, allocations: 4.56 MB / 0.5132 GB, free: 6.84 MB / 382.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.002278/0.3901, allocations: 0.8267 MB / 0.514 GB, free: 6.445 MB / 382.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.107/0.4971, allocations: 56.34 MB / 0.569 GB, free: 9.637 MB / 446.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.079e-05/0.4972, allocations: 39 kB / 0.569 GB, free: 9.59 MB / 446.1 MB Notification: Performance of pre-optimization done (n=48): time 1.853e-06/0.4972, allocations: 0 / 0.569 GB, free: 9.59 MB / 446.1 MB Notification: Performance of matching and sorting (n=52): time 0.006965/0.5041, allocations: 2.33 MB / 0.5713 GB, free: 7.203 MB / 446.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 5.961e-05/0.5042, allocations: 111.2 kB / 0.5714 GB, free: 7.07 MB / 446.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0006305/0.5049, allocations: 0.4989 MB / 0.5719 GB, free: 6.562 MB / 446.1 MB Notification: Performance of collectPreVariables (initialization): time 6.1e-05/0.5049, allocations: 37.7 kB / 0.5719 GB, free: 6.52 MB / 446.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0002008/0.5051, allocations: 324.1 kB / 0.5722 GB, free: 6.195 MB / 446.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0001414/0.5053, allocations: 181.5 kB / 0.5724 GB, free: 6.016 MB / 446.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 3.666e-05/0.5053, allocations: 12 kB / 0.5724 GB, free: 6.004 MB / 446.1 MB Notification: Performance of setup shared object (initialization): time 0.0001334/0.5055, allocations: 366.8 kB / 0.5728 GB, free: 5.637 MB / 446.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0006477/0.5061, allocations: 281.1 kB / 0.573 GB, free: 5.359 MB / 446.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0007203/0.5069, allocations: 454.1 kB / 0.5735 GB, free: 4.852 MB / 446.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.0006883/0.5076, allocations: 318 kB / 0.5738 GB, free: 4.543 MB / 446.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.675e-06/0.5076, allocations: 0 / 0.5738 GB, free: 4.543 MB / 446.1 MB Notification: Performance of matching and sorting (n=76) (initialization): time 0.00231/0.5099, allocations: 0.9907 MB / 0.5748 GB, free: 3.539 MB / 446.1 MB Notification: Performance of prepare postOptimizeDAE: time 0.0005621/0.5105, allocations: 1.748 MB / 0.5765 GB, free: 1.656 MB / 446.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.176e-05/0.5105, allocations: 4 kB / 0.5765 GB, free: 1.652 MB / 446.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.002139/0.5126, allocations: 448.4 kB / 0.5769 GB, free: 1.211 MB / 446.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004845/0.5131, allocations: 139.8 kB / 0.577 GB, free: 1.074 MB / 446.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001349/0.5145, allocations: 0.9152 MB / 0.5779 GB, free: 136 kB / 446.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007641/0.5153, allocations: 91.81 kB / 0.578 GB, free: 44 kB / 446.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.081e-05/0.5154, allocations: 39.98 kB / 0.578 GB, free: 4 kB / 446.1 MB Notification: Performance of prepare postOptimizeDAE: time 1.112e-05/0.5154, allocations: 6.969 kB / 0.578 GB, free: 0 / 446.1 MB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.002596/0.518, allocations: 0.9466 MB / 0.579 GB, free: 15.05 MB / 462.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.987e-06/0.518, allocations: 4.469 kB / 0.579 GB, free: 15.04 MB / 462.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.001539/0.5195, allocations: 375.1 kB / 0.5793 GB, free: 14.68 MB / 462.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004676/0.52, allocations: 131.8 kB / 0.5795 GB, free: 14.55 MB / 462.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001246/0.5213, allocations: 0.9073 MB / 0.5803 GB, free: 13.62 MB / 462.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0006842/0.522, allocations: 83.97 kB / 0.5804 GB, free: 13.54 MB / 462.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.948e-05/0.5221, allocations: 32 kB / 0.5805 GB, free: 13.5 MB / 462.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 20 * Number of states: 0 () * Number of discrete variables: 6 (Source.medium.phase,Sink.medium.phase,pump.heatTransfer.states[1].phase,Valve.state_b.phase,Valve.state_a.phase,pump.monitoring.state_in.phase) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (56): * Single equations (assignments): 55 * 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 {3 18} Notification: Performance of prepare postOptimizeDAE: time 0.000363/0.5224, allocations: 292.9 kB / 0.5807 GB, free: 13.21 MB / 462.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001267/0.5226, allocations: 66.56 kB / 0.5808 GB, free: 13.14 MB / 462.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003548/0.5261, allocations: 2.933 MB / 0.5837 GB, free: 10.2 MB / 462.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.655e-05/0.5262, allocations: 43.92 kB / 0.5837 GB, free: 10.15 MB / 462.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.143e-06/0.5262, allocations: 0 / 0.5837 GB, free: 10.15 MB / 462.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 9.398e-06/0.5262, allocations: 3.984 kB / 0.5837 GB, free: 10.15 MB / 462.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.004775/0.531, allocations: 4.129 MB / 0.5877 GB, free: 5.953 MB / 462.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.059e-06/0.531, allocations: 0 / 0.5877 GB, free: 5.953 MB / 462.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0007106/0.5317, allocations: 167.8 kB / 0.5879 GB, free: 5.789 MB / 462.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.0003465/0.5321, allocations: 80.69 kB / 0.588 GB, free: 5.707 MB / 462.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.086e-05/0.5321, allocations: 20 kB / 0.588 GB, free: 5.688 MB / 462.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0005943/0.5327, allocations: 1.177 MB / 0.5891 GB, free: 4.461 MB / 462.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.234e-06/0.5328, allocations: 1.562 kB / 0.5892 GB, free: 4.461 MB / 462.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003338/0.5361, allocations: 2.617 MB / 0.5917 GB, free: 1.828 MB / 462.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0005005/0.5366, allocations: 334.7 kB / 0.592 GB, free: 1.48 MB / 462.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001468/0.5368, allocations: 12 kB / 0.592 GB, free: 1.469 MB / 462.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000583/0.5374, allocations: 71.91 kB / 0.5921 GB, free: 1.398 MB / 462.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001254/0.5375, allocations: 60.47 kB / 0.5922 GB, free: 1.34 MB / 462.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.846e-05/0.5376, allocations: 23.98 kB / 0.5922 GB, free: 1.316 MB / 462.1 MB Notification: Performance of sorting global known variables: time 0.0005618/0.5381, allocations: 463 kB / 0.5926 GB, free: 0.8594 MB / 462.1 MB Notification: Performance of sort global known variables: time 1.7e-07/0.5381, allocations: 4 kB / 0.5926 GB, free: 0.8555 MB / 462.1 MB Notification: Performance of remove unused functions: time 0.005182/0.5433, allocations: 1.347 MB / 0.5939 GB, free: 15.51 MB / 478.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 2 (pump.medium.p,pump.medium.h) * Number of discrete variables: 25 ($cse1.phase,$cse1.region,$cse2.phase,$cse2.region,$cse4.phase,$cse4.region,$cse5.phase,$cse5.region,$cse9.phase,$cse9.region,$cse10.phase,$cse10.region,$cse11.region3boundary,$cse12.region3boundary,$cse13.phase,$cse13.region,$cse14.phase,$cse14.region,$cse15.region3boundary,$cse16.region3boundary,$cse18.phase,$cse18.region,Source.medium.phase,Sink.medium.phase,pump.heatTransfer.states[1].phase) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (68): * Single equations (assignments): 53 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 13 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 1 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 1 {1} * Without analytic Jacobian: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 1 {1 1} Notification: Performance of Backend phase and start with SimCode phase: time 0.008126/0.5515, allocations: 1.38 MB / 0.5953 GB, free: 14.13 MB / 478.1 MB Notification: Performance of simCode: created initialization part: time 0.003675/0.5552, allocations: 1.541 MB / 0.5968 GB, free: 12.59 MB / 478.1 MB Notification: Performance of simCode: created event and clocks part: time 5.109e-06/0.5552, allocations: 0 / 0.5968 GB, free: 12.59 MB / 478.1 MB Notification: Performance of simCode: created simulation system equations: time 0.001303/0.5565, allocations: 0.8755 MB / 0.5977 GB, free: 11.72 MB / 478.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001736/0.5583, allocations: 317.3 kB / 0.598 GB, free: 11.41 MB / 478.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003735/0.562, allocations: 3.141 MB / 0.601 GB, free: 8.25 MB / 478.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006111/0.5627, allocations: 1.162 MB / 0.6022 GB, free: 7.059 MB / 478.1 MB Notification: Performance of simCode: alias equations: time 0.001095/0.5638, allocations: 0.7264 MB / 0.6029 GB, free: 6.332 MB / 478.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001856/0.564, allocations: 75.36 kB / 0.6029 GB, free: 6.258 MB / 478.1 MB Notification: Performance of SimCode: time 5.31e-07/0.564, allocations: 0 / 0.6029 GB, free: 6.258 MB / 478.1 MB Notification: Performance of Templates: time 0.2392/0.8031, allocations: 49.72 MB / 0.6515 GB, free: 148.1 MB / 494.1 MB make -j1 -f ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Machines.TestWaterPumpPowerCharacteristic.makefile Environment - environmentSimulation: (rm -f ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Machines.TestWaterPumpPowerCharacteristic.pipe ; mkfifo ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Machines.TestWaterPumpPowerCharacteristic.pipe ; head -c 1048576 < ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Machines.TestWaterPumpPowerCharacteristic.pipe >> ../files/ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Machines.TestWaterPumpPowerCharacteristic.sim & ./ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Machines.TestWaterPumpPowerCharacteristic -abortSlowSimulation -alarm=480 -lv LOG_STATS > ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Machines.TestWaterPumpPowerCharacteristic.pipe 2>&1) Environment - environmentSimulation: