Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Annex60_1.0.0_Annex60.Fluid.Movers.Validation.FlowControlled_dp.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/Annex60 1.0.0/package.mo", uses=false)
Using package Annex60 with version 1.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Annex60 1.0.0/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(Annex60.Fluid.Movers.Validation.FlowControlled_dp,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Annex60_1.0.0_Annex60.Fluid.Movers.Validation.FlowControlled_dp")
translateModel(Annex60.Fluid.Movers.Validation.FlowControlled_dp,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Annex60_1.0.0_Annex60.Fluid.Movers.Validation.FlowControlled_dp")
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001015/0.001015, allocations: 100 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 0.0009429/0.000943, 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 1.557/1.557, allocations: 205.4 MB / 222.1 MB, free: 5.664 MB / 174.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Annex60 1.0.0/package.mo): time 0.3748/0.3748, allocations: 54.98 MB / 325.4 MB, free: 0.6758 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: Annex60 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 0.0005665/0.0005666, allocations: 12 kB / 396.6 MB, free: 11.77 MB / 334.1 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.3194/0.32, allocations: 60.71 MB / 457.3 MB, free: 38.61 MB / 382.1 MB
Notification: Performance of NFInst.instantiate(Annex60.Fluid.Movers.Validation.FlowControlled_dp): time 0.5761/0.8961, allocations: 262.6 MB / 0.703 GB, free: 31.32 MB / 0.4981 GB
Notification: Performance of NFInst.instExpressions: time 0.02856/0.9247, allocations: 20.91 MB / 0.7234 GB, free: 30.22 MB / 0.4981 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.00419/0.929, allocations: 79.56 kB / 0.7235 GB, free: 30.21 MB / 0.4981 GB
Notification: Performance of NFTyping.typeComponents: time 0.005357/0.9343, allocations: 1.297 MB / 0.7248 GB, free: 29.87 MB / 0.4981 GB
Notification: Performance of NFTyping.typeBindings: time 0.01303/0.9474, allocations: 3.706 MB / 0.7284 GB, free: 29.09 MB / 0.4981 GB
Notification: Performance of NFTyping.typeClassSections: time 0.01053/0.958, allocations: 3.08 MB / 0.7314 GB, free: 28.41 MB / 0.4981 GB
Notification: Performance of NFFlatten.flatten: time 0.007225/0.9652, allocations: 3.478 MB / 0.7348 GB, free: 27.95 MB / 0.4981 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.002864/0.9681, allocations: 1.606 MB / 0.7364 GB, free: 27.39 MB / 0.4981 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.005912/0.974, allocations: 2.144 MB / 0.7384 GB, free: 27.06 MB / 0.4981 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.002492/0.9766, allocations: 1.179 MB / 0.7396 GB, free: 26.48 MB / 0.4981 GB
Notification: Performance of NFPackage.collectConstants: time 0.0003555/0.9769, allocations: 96 kB / 0.7397 GB, free: 26.39 MB / 0.4981 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.004398/0.9813, allocations: 1.715 MB / 0.7414 GB, free: 25.12 MB / 0.4981 GB
Notification: Performance of NFScalarize.scalarize: time 0.0007964/0.9822, allocations: 0.7007 MB / 0.742 GB, free: 24.66 MB / 0.4981 GB
Notification: Performance of NFVerifyModel.verify: time 0.0008327/0.983, allocations: 0.5197 MB / 0.7426 GB, free: 24.39 MB / 0.4981 GB
Notification: Performance of NFConvertDAE.convert: time 0.004098/0.9871, allocations: 3.139 MB / 0.7456 GB, free: 21.74 MB / 0.4981 GB
Notification: Performance of FrontEnd - DAE generated: time 3.537e-06/0.9871, allocations: 0 / 0.7456 GB, free: 21.74 MB / 0.4981 GB
Notification: Performance of FrontEnd: time 2.454e-06/0.9871, allocations: 0 / 0.7456 GB, free: 21.74 MB / 0.4981 GB
Notification: Performance of Transformations before backend: time 7.014e-05/0.9872, allocations: 4 kB / 0.7456 GB, free: 21.74 MB / 0.4981 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 356
 * Number of variables: 356
Notification: Performance of Generate backend data structure: time 0.004354/0.9916, allocations: 2.522 MB / 0.7481 GB, free: 19.38 MB / 0.4981 GB
Notification: Performance of prepare preOptimizeDAE: time 3.932e-05/0.9916, allocations: 8.031 kB / 0.7481 GB, free: 19.37 MB / 0.4981 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004966/0.9966, allocations: 0.853 MB / 0.7489 GB, free: 18.54 MB / 0.4981 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.003208/0.9998, allocations: 1.816 MB / 0.7507 GB, free: 17.2 MB / 0.4981 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003661/1, allocations: 177.2 kB / 0.7509 GB, free: 17.07 MB / 0.4981 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002242/1, allocations: 152.2 kB / 0.751 GB, free: 16.97 MB / 0.4981 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.003965/1.004, allocations: 1.926 MB / 0.7529 GB, free: 15.54 MB / 0.4981 GB
Notification: Performance of preOpt findStateOrder (simulation): time 3.464e-05/1.004, allocations: 0 / 0.7529 GB, free: 15.54 MB / 0.4981 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001416/1.005, allocations: 62.84 kB / 0.753 GB, free: 15.52 MB / 0.4981 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.107e-05/1.005, allocations: 56.41 kB / 0.753 GB, free: 15.47 MB / 0.4981 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.004012/1.009, allocations: 1.703 MB / 0.7547 GB, free: 14.24 MB / 0.4981 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 0.01016/1.019, allocations: 7.967 MB / 0.7625 GB, free: 7.32 MB / 0.4981 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.003159/1.022, allocations: 1.325 MB / 0.7637 GB, free: 6.301 MB / 0.4981 GB
Notification: Performance of preOpt evalFunc (simulation): time 5.556e-05/1.022, allocations: 19.53 kB / 0.7638 GB, free: 6.285 MB / 0.4981 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.465e-05/1.022, allocations: 44.22 kB / 0.7638 GB, free: 6.242 MB / 0.4981 GB
Notification: Performance of preOpt simplifyInStream (simulation): time 0.001031/1.023, allocations: 138.4 kB / 0.7639 GB, free: 6.121 MB / 0.4981 GB
Notification: Performance of pre-optimization done (n=74): time 3.266e-06/1.023, allocations: 0 / 0.7639 GB, free: 6.121 MB / 0.4981 GB
Notification: Performance of matching and sorting (n=74): time 0.006756/1.03, allocations: 2.168 MB / 0.7661 GB, free: 4.281 MB / 0.4981 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 3.39e-05/1.03, allocations: 64.02 kB / 0.7661 GB, free: 4.207 MB / 0.4981 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002205/1.032, allocations: 1.837 MB / 0.7679 GB, free: 2.824 MB / 0.4981 GB
Notification: Performance of collectPreVariables (initialization): time 0.0001477/1.032, allocations: 49.08 kB / 0.768 GB, free: 2.785 MB / 0.4981 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0005944/1.033, allocations: 1.008 MB / 0.7689 GB, free: 2.23 MB / 0.4981 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0001954/1.033, allocations: 268.2 kB / 0.7692 GB, free: 2.008 MB / 0.4981 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 6.02e-05/1.033, allocations: 19.56 kB / 0.7692 GB, free: 2.004 MB / 0.4981 GB
Notification: Performance of setup shared object (initialization): time 8.517e-05/1.033, allocations: 343.1 kB / 0.7695 GB, free: 1.68 MB / 0.4981 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.001265/1.035, allocations: 0.5303 MB / 0.7701 GB, free: 1.289 MB / 0.4981 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.001427/1.036, allocations: 0.9422 MB / 0.771 GB, free: 340 kB / 0.4981 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.00139/1.037, allocations: 0.6284 MB / 0.7716 GB, free: 15.9 MB / 0.5137 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.033e-05/1.038, allocations: 4 kB / 0.7716 GB, free: 15.9 MB / 0.5137 GB
Notification: Performance of matching and sorting (n=131) (initialization): time 0.005173/1.043, allocations: 1.883 MB / 0.7734 GB, free: 14.42 MB / 0.5137 GB
Notification: Performance of prepare postOptimizeDAE: time 0.001759/1.044, allocations: 4.152 MB / 0.7775 GB, free: 9.898 MB / 0.5137 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.092e-05/1.044, allocations: 12 kB / 0.7775 GB, free: 9.887 MB / 0.5137 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.0004622/1.045, allocations: 133.1 kB / 0.7776 GB, free: 9.773 MB / 0.5137 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00381/1.049, allocations: 0.7239 MB / 0.7783 GB, free: 9.07 MB / 0.5137 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.009144/1.058, allocations: 5.577 MB / 0.7838 GB, free: 3.422 MB / 0.5137 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002727/1.061, allocations: 202.6 kB / 0.784 GB, free: 3.238 MB / 0.5137 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002262/1.061, allocations: 61.53 kB / 0.784 GB, free: 3.188 MB / 0.5137 GB
Notification: Performance of prepare postOptimizeDAE: time 1.523e-05/1.061, allocations: 11.95 kB / 0.784 GB, free: 3.176 MB / 0.5137 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.002572/1.064, allocations: 1.205 MB / 0.7852 GB, free: 2.367 MB / 0.5137 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.72e-05/1.064, allocations: 12 kB / 0.7852 GB, free: 2.355 MB / 0.5137 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.0001491/1.064, allocations: 59.52 kB / 0.7853 GB, free: 2.305 MB / 0.5137 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001006/1.065, allocations: 261.5 kB / 0.7855 GB, free: 2.07 MB / 0.5137 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001347/1.066, allocations: 1.522 MB / 0.787 GB, free: 0.5273 MB / 0.5137 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001752/1.068, allocations: 154 kB / 0.7872 GB, free: 404 kB / 0.5137 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.225e-05/1.068, allocations: 56.69 kB / 0.7872 GB, free: 360 kB / 0.5137 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 45
 * 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 (125):
 * Single equations (assignments): 120
 * Array equations: 2
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (linear and non-linear blocks): 2
 * 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: 2 {1,1}
 * Without analytic Jacobian: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems: 0
 * Non-linear torn systems: 1 {1 4}
Notification: Performance of prepare postOptimizeDAE: time 0.001117/1.069, allocations: 0.5835 MB / 0.7878 GB, free: 15.96 MB / 0.5294 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003231/1.069, allocations: 208.3 kB / 0.788 GB, free: 15.76 MB / 0.5294 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004175/1.074, allocations: 1.477 MB / 0.7894 GB, free: 14.62 MB / 0.5294 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.055e-06/1.074, allocations: 4 kB / 0.7894 GB, free: 14.62 MB / 0.5294 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 4.859e-06/1.074, allocations: 6.188 kB / 0.7895 GB, free: 14.61 MB / 0.5294 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.003539/1.077, allocations: 1.291 MB / 0.7907 GB, free: 13.55 MB / 0.5294 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 0.007014/1.084, allocations: 3.206 MB / 0.7938 GB, free: 11.09 MB / 0.5294 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 8.906e-06/1.084, allocations: 3.984 kB / 0.7938 GB, free: 11.09 MB / 0.5294 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.003252/1.088, allocations: 0.6233 MB / 0.7945 GB, free: 10.48 MB / 0.5294 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.0003605/1.088, allocations: 125.2 kB / 0.7946 GB, free: 10.37 MB / 0.5294 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 8.458e-05/1.088, allocations: 27.03 kB / 0.7946 GB, free: 10.36 MB / 0.5294 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.007677/1.096, allocations: 5.3 MB / 0.7998 GB, free: 4.945 MB / 0.5294 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.603e-06/1.096, allocations: 12.02 kB / 0.7998 GB, free: 4.934 MB / 0.5294 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.005762/1.101, allocations: 2.158 MB / 0.8019 GB, free: 2.922 MB / 0.5294 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.001082/1.103, allocations: 378.4 kB / 0.8023 GB, free: 2.531 MB / 0.5294 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002934/1.103, allocations: 12 kB / 0.8023 GB, free: 2.52 MB / 0.5294 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001608/1.105, allocations: 187.7 kB / 0.8024 GB, free: 2.336 MB / 0.5294 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001531/1.105, allocations: 52.58 kB / 0.8025 GB, free: 2.285 MB / 0.5294 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 9.863e-05/1.105, allocations: 31.97 kB / 0.8025 GB, free: 2.254 MB / 0.5294 GB
Notification: Performance of sorting global known variables: time 0.001877/1.107, allocations: 1.252 MB / 0.8038 GB, free: 0.9844 MB / 0.5294 GB
Notification: Performance of sort global known variables: time 2.31e-07/1.107, allocations: 4 kB / 0.8038 GB, free: 0.9805 MB / 0.5294 GB
Notification: Performance of remove unused functions: time 0.003318/1.11, allocations: 1.045 MB / 0.8048 GB, free: 15.93 MB / 0.545 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 3
 * Number of states: 3 (floMacDyn.vol.dynBal.U,floMacDyn.vol.dynBal.m,floMacDyn.vol.dynBal.mXi[1])
 * 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 (72):
 * Single equations (assignments): 69
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (linear and non-linear blocks): 2
 * 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: 2 {1,1}
 * Without analytic Jacobian: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems: 0
 * Non-linear torn systems: 1 {1 4}
Notification: Performance of Backend phase and start with SimCode phase: time 0.0008349/1.111, allocations: 333 kB / 0.8051 GB, free: 15.64 MB / 0.545 GB
Notification: Performance of simCode: created initialization part: time 0.00781/1.119, allocations: 2.56 MB / 0.8076 GB, free: 13.12 MB / 0.545 GB
Notification: Performance of simCode: created event and clocks part: time 9.568e-06/1.119, allocations: 2.406 kB / 0.8076 GB, free: 13.12 MB / 0.545 GB
Notification: Performance of simCode: created simulation system equations: time 0.006121/1.125, allocations: 1.43 MB / 0.809 GB, free: 11.69 MB / 0.545 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.005129/1.13, allocations: 1.075 MB / 0.81 GB, free: 10.65 MB / 0.545 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.007092/1.137, allocations: 4.371 MB / 0.8143 GB, free: 6.258 MB / 0.545 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.00121/1.138, allocations: 1.623 MB / 0.8159 GB, free: 4.602 MB / 0.545 GB
Notification: Performance of simCode: alias equations: time 0.002349/1.141, allocations: 498.3 kB / 0.8164 GB, free: 4.117 MB / 0.545 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004513/1.141, allocations: 163.4 kB / 0.8165 GB, free: 3.957 MB / 0.545 GB
Notification: Performance of SimCode: time 8.51e-07/1.141, allocations: 0 / 0.8165 GB, free: 3.957 MB / 0.545 GB
Notification: Performance of Templates: time 0.06551/1.207, allocations: 40.41 MB / 0.856 GB, free: 11.86 MB / 0.5919 GB
make -j1 -f Annex60_1.0.0_Annex60.Fluid.Movers.Validation.FlowControlled_dp.makefile
Environment - environmentSimulation:
(rm -f Annex60_1.0.0_Annex60.Fluid.Movers.Validation.FlowControlled_dp.pipe ; mkfifo Annex60_1.0.0_Annex60.Fluid.Movers.Validation.FlowControlled_dp.pipe ; head -c 1048576 < Annex60_1.0.0_Annex60.Fluid.Movers.Validation.FlowControlled_dp.pipe >> ../files/Annex60_1.0.0_Annex60.Fluid.Movers.Validation.FlowControlled_dp.sim & ./Annex60_1.0.0_Annex60.Fluid.Movers.Validation.FlowControlled_dp  -abortSlowSimulation -alarm=480 -lv LOG_STATS > Annex60_1.0.0_Annex60.Fluid.Movers.Validation.FlowControlled_dp.pipe 2>&1)
Environment - environmentSimulation: