Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u.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: "" <> buildModelFMU(Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u,fileNamePrefix="Buildings_8_Buildings_Fluid_HeatExchangers_Examples_WaterHeater_u",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u,fileNamePrefix="Buildings_8_Buildings_Fluid_HeatExchangers_Examples_WaterHeater_u",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 0.001284/0.001284, allocations: 99.86 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 0.001474/0.001474, allocations: 177.3 kB / 15.94 MB, free: 228 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.701/1.701, allocations: 205.4 MB / 222.1 MB, free: 5.547 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 1.793/1.793, allocations: 292.6 MB / 0.5497 GB, free: 14.63 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 0.0004451/0.0004451, allocations: 11.25 kB / 0.6737 GB, free: 26.11 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1768/0.1773, allocations: 116.3 MB / 0.7872 GB, free: 11.88 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u): time 0.04444/0.2217, allocations: 56.26 MB / 0.8422 GB, free: 3.473 MB / 0.6544 GB Notification: Performance of NFInst.instExpressions: time 0.02063/0.2424, allocations: 17.01 MB / 0.8588 GB, free: 2.438 MB / 0.67 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.00271/0.2452, allocations: 71.5 kB / 0.8588 GB, free: 2.367 MB / 0.67 GB Notification: Performance of NFTyping.typeComponents: time 0.003132/0.2483, allocations: 1.007 MB / 0.8598 GB, free: 1.355 MB / 0.67 GB Notification: Performance of NFTyping.typeBindings: time 0.00802/0.2563, allocations: 2.646 MB / 0.8624 GB, free: 14.7 MB / 0.6856 GB Notification: Performance of NFTyping.typeClassSections: time 0.00973/0.2661, allocations: 3.15 MB / 0.8655 GB, free: 11.59 MB / 0.6856 GB Notification: Performance of NFFlatten.flatten: time 0.007101/0.2732, allocations: 3.147 MB / 0.8686 GB, free: 8.43 MB / 0.6856 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002982/0.2762, allocations: 1.36 MB / 0.8699 GB, free: 7.039 MB / 0.6856 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003843/0.2801, allocations: 1.463 MB / 0.8713 GB, free: 5.57 MB / 0.6856 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002454/0.2826, allocations: 0.9797 MB / 0.8723 GB, free: 4.586 MB / 0.6856 GB Notification: Performance of NFPackage.collectConstants: time 0.0006503/0.2832, allocations: 76 kB / 0.8723 GB, free: 4.512 MB / 0.6856 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004278/0.2875, allocations: 1.451 MB / 0.8738 GB, free: 3.059 MB / 0.6856 GB Notification: Performance of NFScalarize.scalarize: time 0.000699/0.2883, allocations: 414.3 kB / 0.8742 GB, free: 2.652 MB / 0.6856 GB Notification: Performance of NFVerifyModel.verify: time 0.0007651/0.289, allocations: 440.6 kB / 0.8746 GB, free: 2.215 MB / 0.6856 GB Notification: Performance of NFConvertDAE.convert: time 0.003705/0.2927, allocations: 2.681 MB / 0.8772 GB, free: 15.53 MB / 0.7012 GB Notification: Performance of FrontEnd - DAE generated: time 3.086e-06/0.2928, allocations: 0 / 0.8772 GB, free: 15.53 MB / 0.7012 GB Notification: Performance of FrontEnd: time 1.853e-06/0.2928, allocations: 0 / 0.8772 GB, free: 15.53 MB / 0.7012 GB Notification: Performance of Transformations before backend: time 4.907e-05/0.2928, allocations: 0 / 0.8772 GB, free: 15.53 MB / 0.7012 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 311 * Number of variables: 311 Notification: Performance of Generate backend data structure: time 0.003951/0.2968, allocations: 2.337 MB / 0.8795 GB, free: 13.12 MB / 0.7012 GB Notification: Performance of prepare preOptimizeDAE: time 3.969e-05/0.2968, allocations: 8.031 kB / 0.8795 GB, free: 13.11 MB / 0.7012 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0002219/0.2971, allocations: 189.8 kB / 0.8797 GB, free: 12.91 MB / 0.7012 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001259/0.2983, allocations: 392.9 kB / 0.88 GB, free: 12.53 MB / 0.7012 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002716/0.301, allocations: 1.646 MB / 0.8817 GB, free: 10.83 MB / 0.7012 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003546/0.3014, allocations: 170.3 kB / 0.8818 GB, free: 10.66 MB / 0.7012 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001803/0.3016, allocations: 139.9 kB / 0.8819 GB, free: 10.53 MB / 0.7012 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002269/0.3039, allocations: 1.45 MB / 0.8834 GB, free: 8.984 MB / 0.7012 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.708e-05/0.3039, allocations: 0 / 0.8834 GB, free: 8.984 MB / 0.7012 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001091/0.304, allocations: 52 kB / 0.8834 GB, free: 8.934 MB / 0.7012 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.554e-05/0.3041, allocations: 36 kB / 0.8834 GB, free: 8.898 MB / 0.7012 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002215/0.3063, allocations: 1.122 MB / 0.8845 GB, free: 7.77 MB / 0.7012 GB 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 0.008079/0.3144, allocations: 7.434 MB / 0.8918 GB, free: 15.75 MB / 0.7169 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002027/0.3164, allocations: 1.368 MB / 0.8931 GB, free: 14.27 MB / 0.7169 GB Notification: Performance of preOpt evalFunc (simulation): time 0.003562/0.32, allocations: 2.612 MB / 0.8957 GB, free: 11.43 MB / 0.7169 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0009155/0.3209, allocations: 462.9 kB / 0.8961 GB, free: 10.97 MB / 0.7169 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.0004599/0.3214, allocations: 99.09 kB / 0.8962 GB, free: 10.87 MB / 0.7169 GB Notification: Performance of pre-optimization done (n=65): time 2.555e-06/0.3214, allocations: 0 / 0.8962 GB, free: 10.87 MB / 0.7169 GB Notification: Performance of matching and sorting (n=65): time 0.002736/0.3242, allocations: 1.276 MB / 0.8975 GB, free: 9.566 MB / 0.7169 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.591e-05/0.3242, allocations: 141.1 kB / 0.8976 GB, free: 9.398 MB / 0.7169 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.00176/0.326, allocations: 1.568 MB / 0.8991 GB, free: 7.832 MB / 0.7169 GB Notification: Performance of collectPreVariables (initialization): time 7.378e-05/0.3261, allocations: 45.7 kB / 0.8992 GB, free: 7.781 MB / 0.7169 GB Notification: Performance of collectInitialEqns (initialization): time 0.0006444/0.3268, allocations: 0.8999 MB / 0.9001 GB, free: 6.871 MB / 0.7169 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001744/0.3269, allocations: 224.8 kB / 0.9003 GB, free: 6.648 MB / 0.7169 GB Notification: Performance of simplifyInitialFunctions (initialization): time 5.107e-05/0.327, allocations: 23.98 kB / 0.9003 GB, free: 6.625 MB / 0.7169 GB Notification: Performance of setup shared object (initialization): time 0.0001064/0.3271, allocations: 345.9 kB / 0.9006 GB, free: 6.281 MB / 0.7169 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0008025/0.3279, allocations: 394 kB / 0.901 GB, free: 5.898 MB / 0.7169 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001024/0.3289, allocations: 0.7581 MB / 0.9017 GB, free: 4.969 MB / 0.7169 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0009118/0.3299, allocations: 0.5039 MB / 0.9022 GB, free: 4.461 MB / 0.7169 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.989e-06/0.3299, allocations: 0 / 0.9022 GB, free: 4.461 MB / 0.7169 GB Notification: Performance of matching and sorting (n=128) (initialization): time 0.0023/0.3322, allocations: 1.315 MB / 0.9035 GB, free: 3.133 MB / 0.7169 GB Notification: Performance of prepare postOptimizeDAE: time 0.001239/0.3334, allocations: 3.832 MB / 0.9073 GB, free: 14.97 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.118e-05/0.3335, allocations: 12 kB / 0.9073 GB, free: 14.96 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.408e-05/0.3335, allocations: 16 kB / 0.9073 GB, free: 14.95 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0009607/0.3345, allocations: 263.6 kB / 0.9075 GB, free: 14.69 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.278e-05/0.3345, allocations: 23.92 kB / 0.9076 GB, free: 14.66 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001223/0.3357, allocations: 152.4 kB / 0.9077 GB, free: 14.52 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.97e-05/0.3358, allocations: 51.98 kB / 0.9078 GB, free: 14.46 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 6.562e-06/0.3358, allocations: 4 kB / 0.9078 GB, free: 14.46 MB / 0.7325 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.002125/0.338, allocations: 1.148 MB / 0.9089 GB, free: 13.31 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.585e-05/0.338, allocations: 15.94 kB / 0.9089 GB, free: 13.29 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.377e-05/0.338, allocations: 16 kB / 0.9089 GB, free: 13.28 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008979/0.3389, allocations: 259.9 kB / 0.9092 GB, free: 13.02 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.806e-05/0.339, allocations: 23.92 kB / 0.9092 GB, free: 13 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001049/0.34, allocations: 144.4 kB / 0.9093 GB, free: 12.86 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.655e-05/0.3401, allocations: 55.98 kB / 0.9094 GB, free: 12.8 MB / 0.7325 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 42 * Number of states: 0 () * Number of discrete variables: 6 ($whenCondition1,$PRE.TSet.T_start,TSet.T_start,$PRE.TSet.count,TSet.count,conPI.I.trigger_internal) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (124): * Single equations (assignments): 120 * Array equations: 2 * Algorithm blocks: 1 * Record equations: 1 * 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 0.0008692/0.341, allocations: 0.4906 MB / 0.9099 GB, free: 12.31 MB / 0.7325 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000211/0.3412, allocations: 169.8 kB / 0.91 GB, free: 12.14 MB / 0.7325 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002324/0.3435, allocations: 1.124 MB / 0.9111 GB, free: 11 MB / 0.7325 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.249e-05/0.3436, allocations: 8 kB / 0.9111 GB, free: 10.99 MB / 0.7325 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 9.217e-06/0.3436, allocations: 3.953 kB / 0.9111 GB, free: 10.99 MB / 0.7325 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001613/0.3452, allocations: 0.8238 MB / 0.9119 GB, free: 10.15 MB / 0.7325 GB 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 postOpt removeSimpleEquations (simulation): time 0.003999/0.3492, allocations: 2.643 MB / 0.9145 GB, free: 7.406 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.665e-06/0.3492, allocations: 4 kB / 0.9145 GB, free: 7.402 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006671/0.3499, allocations: 160 kB / 0.9147 GB, free: 7.246 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.000186/0.3501, allocations: 40.84 kB / 0.9147 GB, free: 7.203 MB / 0.7325 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.919e-05/0.3502, allocations: 27.97 kB / 0.9147 GB, free: 7.176 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0009775/0.3512, allocations: 1.39 MB / 0.9161 GB, free: 5.652 MB / 0.7325 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.823e-06/0.3512, allocations: 0 / 0.9161 GB, free: 5.652 MB / 0.7325 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002813/0.354, allocations: 1.772 MB / 0.9178 GB, free: 3.762 MB / 0.7325 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0005635/0.3546, allocations: 390.5 kB / 0.9182 GB, free: 3.359 MB / 0.7325 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001812/0.3548, allocations: 12 kB / 0.9182 GB, free: 3.348 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0009741/0.3557, allocations: 132 kB / 0.9183 GB, free: 3.219 MB / 0.7325 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001115/0.3559, allocations: 72.36 kB / 0.9184 GB, free: 3.148 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.446e-05/0.3559, allocations: 31.98 kB / 0.9184 GB, free: 3.117 MB / 0.7325 GB Notification: Performance of sorting global known variables: time 0.001338/0.3573, allocations: 1.125 MB / 0.9195 GB, free: 1.969 MB / 0.7325 GB Notification: Performance of sort global known variables: time 1.2e-07/0.3573, allocations: 0 / 0.9195 GB, free: 1.969 MB / 0.7325 GB Notification: Performance of remove unused functions: time 0.002392/0.3597, allocations: 1.017 MB / 0.9205 GB, free: 0.9492 MB / 0.7325 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 9 * Number of states: 6 (vol.dynBal.U,mov.filter.x[1],mov.filter.x[2],conPI.I.y,THeaOut.T,hea.vol.dynBal.U) * Number of discrete variables: 3 ($whenCondition1,TSet.T_start,TSet.count) * Number of discrete states: 1 (TSet.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (75): * Single equations (assignments): 67 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 5 * When equations: 2 * 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: 1 {(1,100.0%) 2} * Non-linear torn systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.397/0.7567, allocations: 3.27 MB / 0.9237 GB, free: 129.9 MB / 0.7325 GB Notification: Performance of simCode: created initialization part: time 0.003653/0.7603, allocations: 1.708 MB / 0.9254 GB, free: 129.7 MB / 0.7325 GB Notification: Performance of simCode: created event and clocks part: time 8.937e-06/0.7604, allocations: 1.156 kB / 0.9254 GB, free: 129.7 MB / 0.7325 GB Notification: Performance of simCode: created simulation system equations: time 0.001296/0.7617, allocations: 0.573 MB / 0.9259 GB, free: 129.5 MB / 0.7325 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004299/0.766, allocations: 0.8679 MB / 0.9268 GB, free: 129.5 MB / 0.7325 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.007706/0.7737, allocations: 11.06 MB / 0.9376 GB, free: 121.1 MB / 0.7325 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0009643/0.7747, allocations: 1.445 MB / 0.939 GB, free: 120.3 MB / 0.7325 GB Notification: Performance of simCode: alias equations: time 0.002084/0.7768, allocations: 444.2 kB / 0.9394 GB, free: 120.2 MB / 0.7325 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0008915/0.7777, allocations: 0.7398 MB / 0.9402 GB, free: 119.7 MB / 0.7325 GB Notification: Performance of SimCode: time 9.02e-07/0.7777, allocations: 0 / 0.9402 GB, free: 119.7 MB / 0.7325 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 2.479/3.257, allocations: 50.7 MB / 0.9897 GB, free: 88.96 MB / 0.7325 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0001824/3.257, allocations: 234.2 kB / 0.9899 GB, free: 88.73 MB / 0.7325 GB Notification: Performance of buildModelFMU: Generate platform static: time 4.236/7.492, allocations: 4 kB / 0.9899 GB, free: 88.72 MB / 0.7325 GB (rm -f Buildings_8_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u.pipe ; mkfifo Buildings_8_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u.pipe ; head -c 1048576 < Buildings_8_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u.pipe >> ../files/Buildings_8_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator --tempDir=temp_Buildings_8_Buildings_Fluid_HeatExchangers_Examples_WaterHeater_u_fmu --startTime=0 --stopTime=172800 --timeout=50 --tolerance=1e-06 Buildings_8_Buildings_Fluid_HeatExchangers_Examples_WaterHeater_u.fmu > Buildings_8_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u.pipe 2>&1) Environment - environmentSimulation: