Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr ThermoPower_ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_B.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/ThermoPower 3.1.0-master/package.mo", uses=false) Using package ThermoPower with version 3.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoPower 3.1.0-master/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(ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_B,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ThermoPower_ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_B") translateModel(ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_B,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ThermoPower_ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_B") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001207/0.001214, allocations: 88.59 kB / 16.31 MB, free: 6.453 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001196/0.001196, allocations: 183.1 kB / 17.21 MB, free: 6.324 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.526/1.526, allocations: 205.4 MB / 223.4 MB, free: 5.773 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoPower 3.1.0-master/package.mo): time 0.4553/0.4553, allocations: 48.78 MB / 320.4 MB, free: 3.812 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: Performance of FrontEnd - loaded program: time 0.0005059/0.0005061, allocations: 12 kB / 391.2 MB, free: 14.3 MB / 334.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1239/0.1244, allocations: 60.27 MB / 451.4 MB, free: 1.887 MB / 382.1 MB Notification: Performance of NFInst.instantiate(ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_B): time 0.2411/0.3656, allocations: 48.03 MB / 499.5 MB, free: 18.98 MB / 382.1 MB Notification: Performance of NFInst.instExpressions: time 0.01151/0.3771, allocations: 10.76 MB / 0.4983 GB, free: 11.42 MB / 382.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0007548/0.3779, allocations: 14.88 kB / 0.4983 GB, free: 11.41 MB / 382.1 MB Notification: Performance of NFTyping.typeComponents: time 0.0007629/0.3787, allocations: 261.8 kB / 0.4985 GB, free: 11.19 MB / 382.1 MB Notification: Performance of NFTyping.typeBindings: time 0.00096/0.3797, allocations: 465.6 kB / 0.499 GB, free: 10.82 MB / 382.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.01245/0.3921, allocations: 4.064 MB / 0.5029 GB, free: 7.844 MB / 382.1 MB Notification: Performance of NFFlatten.flatten: time 0.005814/0.398, allocations: 5.678 MB / 0.5085 GB, free: 4.539 MB / 382.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.003292/0.4013, allocations: 1.903 MB / 0.5103 GB, free: 3.363 MB / 382.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.00421/0.4055, allocations: 1.637 MB / 0.5119 GB, free: 2.734 MB / 382.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.006267/0.4118, allocations: 2.991 MB / 0.5149 GB, free: 1.258 MB / 382.1 MB Notification: Performance of NFPackage.collectConstants: time 0.002742/0.4146, allocations: 334.2 kB / 0.5152 GB, free: 1.258 MB / 382.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.01638/0.431, allocations: 6.308 MB / 0.5213 GB, free: 10.95 MB / 398.1 MB Notification: Performance of NFScalarize.scalarize: time 0.004694/0.4357, allocations: 1.98 MB / 0.5233 GB, free: 8.965 MB / 398.1 MB Notification: Performance of NFVerifyModel.verify: time 0.002792/0.4385, allocations: 0.7378 MB / 0.524 GB, free: 8.219 MB / 398.1 MB Notification: Performance of NFConvertDAE.convert: time 0.0136/0.4522, allocations: 7.552 MB / 0.5314 GB, free: 0.6523 MB / 398.1 MB Notification: Performance of FrontEnd - DAE generated: time 1.08e-05/0.4522, allocations: 0 / 0.5314 GB, free: 0.6523 MB / 398.1 MB Notification: Performance of FrontEnd: time 3.567e-06/0.4522, allocations: 0 / 0.5314 GB, free: 0.6523 MB / 398.1 MB Notification: Performance of Transformations before backend: time 0.0003193/0.4526, allocations: 0 / 0.5314 GB, free: 0.6523 MB / 398.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 1387 * Number of variables: 1387 Notification: Performance of Generate backend data structure: time 0.03185/0.4844, allocations: 10.5 MB / 0.5416 GB, free: 6.082 MB / 414.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.993e-05/0.4845, allocations: 12.02 kB / 0.5416 GB, free: 6.07 MB / 414.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.005278/0.4898, allocations: 0.7872 MB / 0.5424 GB, free: 5.277 MB / 414.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.009472/0.4993, allocations: 2.829 MB / 0.5452 GB, free: 2.398 MB / 414.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0007875/0.5001, allocations: 398.7 kB / 0.5456 GB, free: 2.008 MB / 414.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.003179/0.5033, allocations: 0.5194 MB / 0.5461 GB, free: 1.488 MB / 414.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.04249/0.5458, allocations: 12.26 MB / 0.558 GB, free: 5.18 MB / 430.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 0.0001989/0.5461, allocations: 3.984 kB / 0.558 GB, free: 5.176 MB / 430.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.001971/0.5481, allocations: 213.8 kB / 0.5582 GB, free: 4.969 MB / 430.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0002878/0.5484, allocations: 218.8 kB / 0.5585 GB, free: 4.754 MB / 430.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.04316/0.5916, allocations: 14.39 MB / 0.5725 GB, free: 6.348 MB / 446.1 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 0.04107/0.6327, allocations: 24.34 MB / 0.5963 GB, free: 12.11 MB / 478.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.01099/0.6437, allocations: 4.907 MB / 0.6011 GB, free: 7.188 MB / 478.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.003632/0.6474, allocations: 2.211 MB / 0.6032 GB, free: 4.969 MB / 478.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.3441/0.9915, allocations: 64.62 MB / 0.6663 GB, free: 138.3 MB / 0.4981 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0001058/0.9916, allocations: 63.64 kB / 0.6664 GB, free: 138.2 MB / 0.4981 GB Notification: Performance of pre-optimization done (n=257): time 1.001e-05/0.9916, allocations: 4.922 kB / 0.6664 GB, free: 138.2 MB / 0.4981 GB Notification: Performance of matching and sorting (n=257): time 0.104/1.096, allocations: 25.23 MB / 0.691 GB, free: 129.1 MB / 0.4981 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.69e-05/1.096, allocations: 79.56 kB / 0.6911 GB, free: 129.1 MB / 0.4981 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.005256/1.101, allocations: 3.99 MB / 0.695 GB, free: 126.7 MB / 0.4981 GB Notification: Performance of collectPreVariables (initialization): time 0.001346/1.102, allocations: 73.69 kB / 0.6951 GB, free: 126.6 MB / 0.4981 GB Notification: Performance of collectInitialEqns (initialization): time 0.00281/1.105, allocations: 3.139 MB / 0.6981 GB, free: 123.5 MB / 0.4981 GB Notification: Performance of collectInitialBindings (initialization): time 0.002398/1.108, allocations: 1.034 MB / 0.6991 GB, free: 122.5 MB / 0.4981 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001536/1.109, allocations: 172 kB / 0.6993 GB, free: 122.3 MB / 0.4981 GB Notification: Performance of setup shared object (initialization): time 0.0007327/1.11, allocations: 0.7261 MB / 0.7 GB, free: 121.6 MB / 0.4981 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.006651/1.117, allocations: 3.921 MB / 0.7038 GB, free: 117.7 MB / 0.4981 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.008709/1.125, allocations: 8.987 MB / 0.7126 GB, free: 106.2 MB / 0.4981 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.008255/1.134, allocations: 5.536 MB / 0.718 GB, free: 100.6 MB / 0.4981 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.0001954/1.134, allocations: 52.98 kB / 0.7181 GB, free: 100.6 MB / 0.4981 GB Notification: Performance of matching and sorting (n=1102) (initialization): time 0.0387/1.173, allocations: 17.69 MB / 0.7354 GB, free: 82.81 MB / 0.4981 GB Notification: Performance of prepare postOptimizeDAE: time 0.003322/1.176, allocations: 5.301 MB / 0.7405 GB, free: 75.03 MB / 0.4981 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0002012/1.176, allocations: 176 kB / 0.7407 GB, free: 74.86 MB / 0.4981 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.03995/1.216, allocations: 12.71 MB / 0.7531 GB, free: 62.12 MB / 0.4981 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004405/1.221, allocations: 1.68 MB / 0.7548 GB, free: 60.44 MB / 0.4981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01689/1.237, allocations: 10.48 MB / 0.765 GB, free: 49.93 MB / 0.4981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.007169/1.245, allocations: 1.289 MB / 0.7663 GB, free: 48.63 MB / 0.4981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001576/1.246, allocations: 0.6443 MB / 0.7669 GB, free: 47.98 MB / 0.4981 GB Notification: Performance of prepare postOptimizeDAE: time 1.688e-05/1.246, allocations: 4 kB / 0.7669 GB, free: 47.98 MB / 0.4981 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.03181/1.278, allocations: 17.22 MB / 0.7837 GB, free: 30.72 MB / 0.4981 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0004701/1.279, allocations: 176 kB / 0.7839 GB, free: 30.55 MB / 0.4981 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.03775/1.316, allocations: 12.71 MB / 0.7963 GB, free: 17.83 MB / 0.4981 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004266/1.321, allocations: 1.665 MB / 0.7979 GB, free: 16.16 MB / 0.4981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01704/1.338, allocations: 10.49 MB / 0.8081 GB, free: 5.641 MB / 0.4981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.008563/1.346, allocations: 0.9717 MB / 0.8091 GB, free: 4.664 MB / 0.4981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001916/1.348, allocations: 0.6365 MB / 0.8097 GB, free: 4.027 MB / 0.4981 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 807 * Number of states: 0 () * Number of discrete variables: 14 (hex.fluidState[12].phase,hex.fluidState[11].phase,hex.fluidState[10].phase,hex.fluidState[9].phase,hex.fluidState[8].phase,hex.fluidState[7].phase,hex.fluidState[6].phase,hex.fluidState[5].phase,hex.fluidState[4].phase,hex.fluidState[3].phase,hex.fluidState[2].phase,hex.fluidState[1].phase,T_out.fluidState.phase,T_in.fluidState.phase) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (903): * Single equations (assignments): 902 * 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 {13 187} Notification: Performance of prepare postOptimizeDAE: time 0.00336/1.352, allocations: 1.848 MB / 0.8115 GB, free: 2.164 MB / 0.4981 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0006636/1.352, allocations: 359.4 kB / 0.8119 GB, free: 1.809 MB / 0.4981 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.293/1.645, allocations: 32.64 MB / 0.8437 GB, free: 144.7 MB / 0.5137 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 9.412e-05/1.646, allocations: 72.2 kB / 0.8438 GB, free: 144.7 MB / 0.5137 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.314e-05/1.646, allocations: 1.562 kB / 0.8438 GB, free: 144.7 MB / 0.5137 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.322e-05/1.646, allocations: 18.25 kB / 0.8438 GB, free: 144.7 MB / 0.5137 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.06118/1.707, allocations: 44.82 MB / 0.8876 GB, free: 125.5 MB / 0.5137 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.466e-05/1.707, allocations: 2.312 kB / 0.8876 GB, free: 125.5 MB / 0.5137 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002057/1.709, allocations: 384.6 kB / 0.888 GB, free: 125.1 MB / 0.5137 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.02865/1.738, allocations: 8.419 MB / 0.8962 GB, free: 117 MB / 0.5137 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.001303/1.739, allocations: 127.8 kB / 0.8963 GB, free: 116.9 MB / 0.5137 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.05/1.789, allocations: 30.61 MB / 0.9262 GB, free: 86.19 MB / 0.5137 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.775e-06/1.789, allocations: 0 / 0.9262 GB, free: 86.19 MB / 0.5137 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.03345/1.822, allocations: 15.52 MB / 0.9414 GB, free: 70.6 MB / 0.5137 GB Notification: Performance of postOpt removeConstants (simulation): time 0.002391/1.825, allocations: 0.9433 MB / 0.9423 GB, free: 69.63 MB / 0.5137 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001105/1.826, allocations: 91.97 kB / 0.9424 GB, free: 69.54 MB / 0.5137 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.003079/1.829, allocations: 281.1 kB / 0.9426 GB, free: 69.27 MB / 0.5137 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.001349/1.83, allocations: 255.1 kB / 0.9429 GB, free: 69.01 MB / 0.5137 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0005281/1.831, allocations: 99.91 kB / 0.943 GB, free: 68.91 MB / 0.5137 GB Notification: Performance of sorting global known variables: time 0.002922/1.834, allocations: 2.348 MB / 0.9453 GB, free: 66.58 MB / 0.5137 GB Notification: Performance of sort global known variables: time 1.5e-07/1.834, allocations: 0 / 0.9453 GB, free: 66.58 MB / 0.5137 GB Notification: Performance of remove unused functions: time 0.01279/1.847, allocations: 3.369 MB / 0.9486 GB, free: 63.27 MB / 0.5137 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 2 * Number of states: 13 (hex.p,hex.h[1],hex.h[2],hex.h[3],hex.h[4],hex.h[5],hex.h[6],hex.h[7],hex.h[8],hex.h[9],hex.h[10],hex.h[11],hex.h[12]) * Number of discrete variables: 28 ($cse1.phase,$cse1.region,$cse2.phase,$cse2.region,$cse16.phase,$cse16.region,$cse17.phase,$cse17.region,$cse18.phase,$cse18.region,$cse19.phase,$cse19.region,$cse20.phase,$cse20.region,$cse21.phase,$cse21.region,$cse22.phase,$cse22.region,$cse23.phase,$cse23.region,$cse24.phase,$cse24.region,$cse25.phase,$cse25.region,$cse26.phase,$cse26.region,$cse27.phase,$cse27.region) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (155): * Single equations (assignments): 140 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 14 * 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 {13 126} Notification: Performance of Backend phase and start with SimCode phase: time 0.004401/1.851, allocations: 1.047 MB / 0.9496 GB, free: 62.38 MB / 0.5137 GB Notification: Performance of simCode: created initialization part: time 0.03009/1.881, allocations: 17.22 MB / 0.9664 GB, free: 45.18 MB / 0.5137 GB Notification: Performance of simCode: created event and clocks part: time 9.919e-06/1.881, allocations: 1.938 kB / 0.9664 GB, free: 45.18 MB / 0.5137 GB Notification: Performance of simCode: created simulation system equations: time 0.01005/1.891, allocations: 4.801 MB / 0.9711 GB, free: 40.35 MB / 0.5137 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004324/1.896, allocations: 0.7262 MB / 0.9718 GB, free: 39.64 MB / 0.5137 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0195/1.915, allocations: 13.79 MB / 0.9853 GB, free: 25.86 MB / 0.5137 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.00206/1.917, allocations: 2.785 MB / 0.988 GB, free: 23.04 MB / 0.5137 GB Notification: Performance of simCode: alias equations: time 0.01039/1.928, allocations: 5.299 MB / 0.9932 GB, free: 17.73 MB / 0.5137 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001405/1.929, allocations: 283.3 kB / 0.9934 GB, free: 17.46 MB / 0.5137 GB Notification: Performance of SimCode: time 1.533e-06/1.929, allocations: 0 / 0.9934 GB, free: 17.46 MB / 0.5137 GB Notification: Performance of Templates: time 0.4813/2.411, allocations: 183 MB / 1.172 GB, free: 41.91 MB / 0.5294 GB make -j1 -f ThermoPower_ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_B.makefile Environment - environmentSimulation: (rm -f ThermoPower_ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_B.pipe ; mkfifo ThermoPower_ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_B.pipe ; head -c 1048576 < ThermoPower_ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_B.pipe >> ../files/ThermoPower_ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_B.sim & ./ThermoPower_ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_B -abortSlowSimulation -alarm=480 -lv LOG_STATS > ThermoPower_ThermoPower.Test.DistributedParameterComponents.TestWaterFlow1DFEM_B.pipe 2>&1) Environment - environmentSimulation: