Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Vessels.TestTankWithTopPorts.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.Vessels.TestTankWithTopPorts,tolerance=1e-05,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Vessels.TestTankWithTopPorts") translateModel(ModelicaTest.Fluid.TestComponents.Vessels.TestTankWithTopPorts,tolerance=1e-05,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Vessels.TestTankWithTopPorts") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001073/0.001073, allocations: 97.72 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 0.009917/0.009917, allocations: 169.6 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 1.527/1.527, allocations: 205.4 MB / 222.4 MB, free: 5.559 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 3.2.2+maint.om/package.mo): time 0.3058/0.3058, allocations: 40 MB / 310.7 MB, free: 9.582 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 0.0005356/0.0005356, allocations: 16.41 kB / 379.5 MB, free: 11.97 MB / 318.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1125/0.113, allocations: 57.96 MB / 437.4 MB, free: 1.906 MB / 366.1 MB Notification: Performance of NFInst.instantiate(ModelicaTest.Fluid.TestComponents.Vessels.TestTankWithTopPorts): time 0.2524/0.3655, allocations: 59.43 MB / 496.8 MB, free: 16.77 MB / 382.1 MB Notification: Performance of NFInst.instExpressions: time 0.01613/0.3817, allocations: 17.24 MB / 0.502 GB, free: 4.629 MB / 382.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0009274/0.3826, allocations: 27.78 kB / 0.5021 GB, free: 4.613 MB / 382.1 MB Notification: Performance of NFTyping.typeComponents: time 0.001121/0.3838, allocations: 387.7 kB / 0.5024 GB, free: 4.402 MB / 382.1 MB Notification: Performance of NFTyping.typeBindings: time 0.0106/0.3944, allocations: 4.046 MB / 0.5064 GB, free: 2.547 MB / 382.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.005307/0.3997, allocations: 2.018 MB / 0.5084 GB, free: 1.449 MB / 382.1 MB Notification: Performance of NFFlatten.flatten: time 0.004282/0.404, allocations: 3.89 MB / 0.5122 GB, free: 152 kB / 382.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.001471/0.4055, allocations: 0.7489 MB / 0.5129 GB, free: 15.87 MB / 398.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.006597/0.4121, allocations: 2.535 MB / 0.5154 GB, free: 14.77 MB / 398.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.007369/0.4195, allocations: 2.441 MB / 0.5177 GB, free: 13.7 MB / 398.1 MB Notification: Performance of NFPackage.collectConstants: time 0.0006552/0.4202, allocations: 53.84 kB / 0.5178 GB, free: 13.7 MB / 398.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.01631/0.4366, allocations: 7.213 MB / 0.5248 GB, free: 10.78 MB / 398.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0006039/0.4372, allocations: 280.9 kB / 0.5251 GB, free: 10.59 MB / 398.1 MB Notification: Performance of NFVerifyModel.verify: time 0.001215/0.4384, allocations: 0.5591 MB / 0.5257 GB, free: 10.24 MB / 398.1 MB Notification: Performance of NFConvertDAE.convert: time 0.01269/0.4511, allocations: 5.383 MB / 0.5309 GB, free: 6.797 MB / 398.1 MB Notification: Performance of FrontEnd - DAE generated: time 7.123e-06/0.4512, allocations: 3.938 kB / 0.5309 GB, free: 6.793 MB / 398.1 MB Notification: Performance of FrontEnd: time 2.515e-06/0.4512, allocations: 4 kB / 0.5309 GB, free: 6.789 MB / 398.1 MB Notification: Performance of Transformations before backend: time 6.462e-05/0.4513, allocations: 0 / 0.5309 GB, free: 6.789 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: 212 * Number of variables: 212 Notification: Performance of Generate backend data structure: time 0.006046/0.4573, allocations: 1.692 MB / 0.5326 GB, free: 5.629 MB / 398.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.278e-05/0.4574, allocations: 13.28 kB / 0.5326 GB, free: 5.625 MB / 398.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002502/0.4599, allocations: 323.6 kB / 0.5329 GB, free: 5.496 MB / 398.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001149/0.4611, allocations: 0.6458 MB / 0.5335 GB, free: 4.98 MB / 398.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002501/0.4613, allocations: 300.2 kB / 0.5338 GB, free: 4.691 MB / 398.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002033/0.4616, allocations: 88.2 kB / 0.5339 GB, free: 4.656 MB / 398.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.003353/0.4649, allocations: 1.547 MB / 0.5354 GB, free: 3.676 MB / 398.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 2.95e-05/0.465, allocations: 10.3 kB / 0.5354 GB, free: 3.668 MB / 398.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001216/0.4651, allocations: 33.41 kB / 0.5355 GB, free: 3.645 MB / 398.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.601e-05/0.4651, allocations: 40.31 kB / 0.5355 GB, free: 3.641 MB / 398.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003281/0.4684, allocations: 1.389 MB / 0.5368 GB, free: 2.336 MB / 398.1 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 0.008719/0.4772, allocations: 6.436 MB / 0.5431 GB, free: 11.42 MB / 414.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.002991/0.4802, allocations: 1.019 MB / 0.5441 GB, free: 10.39 MB / 414.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0009606/0.4812, allocations: 467.1 kB / 0.5446 GB, free: 9.926 MB / 414.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.03483/0.516, allocations: 15.81 MB / 0.56 GB, free: 8.266 MB / 430.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.61e-05/0.5161, allocations: 39.12 kB / 0.56 GB, free: 8.219 MB / 430.1 MB Notification: Performance of pre-optimization done (n=59): time 3.156e-06/0.5161, allocations: 0 / 0.56 GB, free: 8.219 MB / 430.1 MB Notification: Performance of matching and sorting (n=64): time 0.009071/0.5252, allocations: 3.075 MB / 0.563 GB, free: 5.086 MB / 430.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 8.595e-05/0.5253, allocations: 166.7 kB / 0.5632 GB, free: 4.887 MB / 430.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0009885/0.5263, allocations: 0.813 MB / 0.564 GB, free: 4.062 MB / 430.1 MB Notification: Performance of collectPreVariables (initialization): time 8.581e-05/0.5264, allocations: 49.7 kB / 0.564 GB, free: 4.008 MB / 430.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0003917/0.5268, allocations: 435.5 kB / 0.5645 GB, free: 3.574 MB / 430.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0002093/0.527, allocations: 220.9 kB / 0.5647 GB, free: 3.355 MB / 430.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001203/0.5272, allocations: 81.67 kB / 0.5647 GB, free: 3.27 MB / 430.1 MB Notification: Performance of setup shared object (initialization): time 0.0001773/0.5273, allocations: 398.7 kB / 0.5651 GB, free: 2.871 MB / 430.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0009681/0.5283, allocations: 457.7 kB / 0.5656 GB, free: 2.422 MB / 430.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001099/0.5294, allocations: 0.6883 MB / 0.5662 GB, free: 1.637 MB / 430.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.001841/0.5313, allocations: 0.9961 MB / 0.5672 GB, free: 0.5586 MB / 430.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.959e-06/0.5313, allocations: 4 kB / 0.5672 GB, free: 0.5547 MB / 430.1 MB Notification: Performance of matching and sorting (n=108) (initialization): time 0.002612/0.5339, allocations: 1.243 MB / 0.5684 GB, free: 15.3 MB / 446.1 MB Notification: Performance of prepare postOptimizeDAE: time 1.957e-05/0.5339, allocations: 8 kB / 0.5684 GB, free: 15.29 MB / 446.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.052e-05/0.534, allocations: 12.03 kB / 0.5684 GB, free: 15.28 MB / 446.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004273/0.5344, allocations: 92.78 kB / 0.5685 GB, free: 15.19 MB / 446.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003461/0.5379, allocations: 348.2 kB / 0.5689 GB, free: 14.85 MB / 446.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.005625/0.5435, allocations: 6.379 MB / 0.5751 GB, free: 7.922 MB / 446.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001132/0.5447, allocations: 135.8 kB / 0.5752 GB, free: 7.789 MB / 446.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.271e-05/0.5448, allocations: 43.98 kB / 0.5753 GB, free: 7.746 MB / 446.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 28 * Number of states: 0 () * Number of discrete variables: 21 (Boundary_fixed.medium.phase,massFlowRate[2].medium.phase,massFlowRate[1].medium.phase,tank.aboveLevel[4],$PRE.tank.aboveLevel[4],tank.aboveLevel[3],$PRE.tank.aboveLevel[3],tank.aboveLevel[2],$PRE.tank.aboveLevel[2],tank.aboveLevel[1],$PRE.tank.aboveLevel[1],tank.ports_m_flow_out[4],$PRE.tank.ports_m_flow_out[4],tank.ports_m_flow_out[3],$PRE.tank.ports_m_flow_out[3],tank.ports_m_flow_out[2],$PRE.tank.ports_m_flow_out[2],tank.ports_m_flow_out[1],$PRE.tank.ports_m_flow_out[1],tank.heatTransfer.states[1].phase,Boundary_fixed.state.phase) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (103): * Single equations (assignments): 98 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 4 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 4 systems {1, 1, 1, 1} * Without analytic Jacobian (size): 0 systems 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 {(1,5)} Notification: Performance of prepare postOptimizeDAE: time 0.0005294/0.5453, allocations: 343.6 kB / 0.5756 GB, free: 7.398 MB / 446.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001641/0.5455, allocations: 86.97 kB / 0.5757 GB, free: 7.312 MB / 446.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003451/0.5489, allocations: 2.231 MB / 0.5779 GB, free: 5.062 MB / 446.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.125e-05/0.549, allocations: 19.98 kB / 0.5779 GB, free: 5.043 MB / 446.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.715e-06/0.549, allocations: 0 / 0.5779 GB, free: 5.043 MB / 446.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.029e-05/0.549, allocations: 7.984 kB / 0.5779 GB, free: 5.035 MB / 446.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.005234/0.5542, allocations: 3.533 MB / 0.5813 GB, free: 1.438 MB / 446.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.791e-06/0.5543, allocations: 0 / 0.5813 GB, free: 1.438 MB / 446.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.003272/0.5575, allocations: 299.6 kB / 0.5816 GB, free: 1.145 MB / 446.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.0003848/0.558, allocations: 100.8 kB / 0.5817 GB, free: 1.043 MB / 446.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.547e-05/0.558, allocations: 24.05 kB / 0.5817 GB, free: 1.02 MB / 446.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.005525/0.5636, allocations: 6.355 MB / 0.5879 GB, free: 10.11 MB / 462.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.405e-06/0.5636, allocations: 3.938 kB / 0.588 GB, free: 10.11 MB / 462.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003787/0.5674, allocations: 2.219 MB / 0.5901 GB, free: 7.855 MB / 462.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0005664/0.568, allocations: 338.9 kB / 0.5904 GB, free: 7.504 MB / 462.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001672/0.5682, allocations: 27.98 kB / 0.5905 GB, free: 7.477 MB / 462.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.00085/0.569, allocations: 115.8 kB / 0.5906 GB, free: 7.363 MB / 462.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002566/0.5693, allocations: 128.2 kB / 0.5907 GB, free: 7.234 MB / 462.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.867e-05/0.5694, allocations: 27.97 kB / 0.5907 GB, free: 7.207 MB / 462.1 MB Notification: Performance of sorting global known variables: time 0.001171/0.5705, allocations: 0.8922 MB / 0.5916 GB, free: 6.309 MB / 462.1 MB Notification: Performance of sort global known variables: time 2.9e-07/0.5706, allocations: 4 kB / 0.5916 GB, free: 6.305 MB / 462.1 MB Notification: Performance of remove unused functions: time 0.004338/0.5749, allocations: 1.226 MB / 0.5928 GB, free: 5.078 MB / 462.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 6 * Number of states: 2 (tank.level,tank.medium.h) * Number of discrete variables: 20 ($cse3.phase,$cse3.region,$cse7.phase,$cse7.region,$cse11.phase,$cse11.region,$cse12.phase,$cse12.region,tank.heatTransfer.states[1].phase,tank.ports_m_flow_out[1],tank.ports_m_flow_out[2],tank.ports_m_flow_out[3],tank.ports_m_flow_out[4],tank.aboveLevel[1],tank.aboveLevel[2],tank.aboveLevel[3],tank.aboveLevel[4],massFlowRate[1].medium.phase,massFlowRate[2].medium.phase,Boundary_fixed.medium.phase) * Number of discrete states: 8 (tank.aboveLevel[1],tank.ports_m_flow_out[1],tank.aboveLevel[2],tank.ports_m_flow_out[2],tank.aboveLevel[3],tank.ports_m_flow_out[3],tank.aboveLevel[4],tank.ports_m_flow_out[4]) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (63): * Single equations (assignments): 54 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 4 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 4 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 4 systems {1, 1, 1, 1} * Without analytic Jacobian (size): 0 systems 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 {(2,4)} Notification: Performance of Backend phase and start with SimCode phase: time 0.005011/0.5799, allocations: 1.291 MB / 0.5941 GB, free: 3.785 MB / 462.1 MB Notification: Performance of simCode: created initialization part: time 0.004976/0.5849, allocations: 1.297 MB / 0.5953 GB, free: 2.492 MB / 462.1 MB Notification: Performance of simCode: created event and clocks part: time 8.626e-06/0.585, allocations: 4 kB / 0.5953 GB, free: 2.488 MB / 462.1 MB Notification: Performance of simCode: created simulation system equations: time 0.003924/0.5889, allocations: 0.9174 MB / 0.5962 GB, free: 1.566 MB / 462.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003722/0.5927, allocations: 0.5288 MB / 0.5967 GB, free: 1.039 MB / 462.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.005482/0.5982, allocations: 3.096 MB / 0.5998 GB, free: 13.9 MB / 478.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0008639/0.5991, allocations: 1.215 MB / 0.601 GB, free: 12.65 MB / 478.1 MB Notification: Performance of simCode: alias equations: time 0.00134/0.6004, allocations: 0.5029 MB / 0.6014 GB, free: 12.15 MB / 478.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002567/0.6007, allocations: 79.42 kB / 0.6015 GB, free: 12.07 MB / 478.1 MB Notification: Performance of SimCode: time 1.012e-06/0.6007, allocations: 0 / 0.6015 GB, free: 12.07 MB / 478.1 MB Notification: Performance of Templates: time 0.2566/0.8573, allocations: 53.64 MB / 0.6539 GB, free: 147 MB / 494.1 MB make -j1 -f ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Vessels.TestTankWithTopPorts.makefile Environment - environmentSimulation: (rm -f ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Vessels.TestTankWithTopPorts.pipe ; mkfifo ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Vessels.TestTankWithTopPorts.pipe ; head -c 1048576 < ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Vessels.TestTankWithTopPorts.pipe >> ../files/ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Vessels.TestTankWithTopPorts.sim & ./ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Vessels.TestTankWithTopPorts -abortSlowSimulation -alarm=480 -lv LOG_STATS > ModelicaTest_3.2.2_ModelicaTest.Fluid.TestComponents.Vessels.TestTankWithTopPorts.pipe 2>&1) Environment - environmentSimulation: