Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised.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: translateModel(Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised") translateModel(Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0008053/0.0008051, allocations: 91.84 kB / 15.06 MB, free: 1.098 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.0007951/0.0007951, allocations: 172.7 kB / 15.95 MB, free: 208 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.325/1.325, allocations: 205.4 MB / 222.1 MB, free: 5.66 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 1.637/1.637, allocations: 292.7 MB / 0.5499 GB, free: 14.55 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 0.0005041/0.0005041, allocations: 21.25 kB / 0.6737 GB, free: 26.17 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2238/0.2243, allocations: 116.3 MB / 0.7873 GB, free: 11.94 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised): time 0.5589/0.7833, allocations: 152.4 MB / 0.9361 GB, free: 5.715 MB / 0.7169 GB Notification: Performance of NFInst.instExpressions: time 0.002798/0.7861, allocations: 2.056 MB / 0.9381 GB, free: 5.641 MB / 0.7169 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0002427/0.7864, allocations: 13.03 kB / 0.9381 GB, free: 5.641 MB / 0.7169 GB Notification: Performance of NFTyping.typeComponents: time 0.0005096/0.7869, allocations: 153.4 kB / 0.9383 GB, free: 5.641 MB / 0.7169 GB Notification: Performance of NFTyping.typeBindings: time 0.001152/0.7881, allocations: 0.4996 MB / 0.9388 GB, free: 5.617 MB / 0.7169 GB Notification: Performance of NFTyping.typeClassSections: time 0.000872/0.7889, allocations: 367.4 kB / 0.9391 GB, free: 5.605 MB / 0.7169 GB Notification: Performance of NFFlatten.flatten: time 0.003039/0.792, allocations: 3.254 MB / 0.9423 GB, free: 5.578 MB / 0.7169 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002546/0.7946, allocations: 2.298 MB / 0.9446 GB, free: 5.188 MB / 0.7169 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002318/0.7969, allocations: 1.05 MB / 0.9456 GB, free: 4.965 MB / 0.7169 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001136/0.798, allocations: 0.8519 MB / 0.9464 GB, free: 4.801 MB / 0.7169 GB Notification: Performance of NFPackage.collectConstants: time 0.0001166/0.7982, allocations: 53.09 kB / 0.9465 GB, free: 4.797 MB / 0.7169 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001361/0.7995, allocations: 0.5936 MB / 0.947 GB, free: 4.75 MB / 0.7169 GB Notification: Performance of NFScalarize.scalarize: time 0.0003186/0.7999, allocations: 330.9 kB / 0.9474 GB, free: 4.703 MB / 0.7169 GB Notification: Performance of NFVerifyModel.verify: time 0.0005152/0.8004, allocations: 250.6 kB / 0.9476 GB, free: 20.63 MB / 0.7325 GB Notification: Performance of NFConvertDAE.convert: time 0.001066/0.8015, allocations: 1.174 MB / 0.9487 GB, free: 20.52 MB / 0.7325 GB Notification: Performance of FrontEnd - DAE generated: time 4.389e-06/0.8015, allocations: 0 / 0.9487 GB, free: 20.52 MB / 0.7325 GB Notification: Performance of FrontEnd: time 1.774e-06/0.8015, allocations: 0 / 0.9487 GB, free: 20.52 MB / 0.7325 GB Notification: Performance of Transformations before backend: time 1.774e-05/0.8015, allocations: 0 / 0.9487 GB, free: 20.52 MB / 0.7325 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 136 * Number of variables: 136 Notification: Performance of Generate backend data structure: time 0.002144/0.8036, allocations: 1.522 MB / 0.9502 GB, free: 19.67 MB / 0.7325 GB Notification: Performance of prepare preOptimizeDAE: time 3.338e-05/0.8037, allocations: 10.19 kB / 0.9502 GB, free: 19.67 MB / 0.7325 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0007173/0.8044, allocations: 195 kB / 0.9504 GB, free: 19.61 MB / 0.7325 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001419/0.8058, allocations: 0.8748 MB / 0.9513 GB, free: 19.26 MB / 0.7325 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.254e-05/0.8059, allocations: 48.5 kB / 0.9513 GB, free: 19.25 MB / 0.7325 GB Notification: Performance of preOpt expandDerOperator (simulation): time 9.625e-05/0.806, allocations: 63.69 kB / 0.9514 GB, free: 19.25 MB / 0.7325 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.00126/0.8073, allocations: 0.9896 MB / 0.9523 GB, free: 19.02 MB / 0.7325 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.63e-05/0.8073, allocations: 1.031 kB / 0.9523 GB, free: 19.02 MB / 0.7325 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.282e-05/0.8074, allocations: 24.59 kB / 0.9524 GB, free: 19.02 MB / 0.7325 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.739e-05/0.8074, allocations: 18.45 kB / 0.9524 GB, free: 19.02 MB / 0.7325 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001167/0.8086, allocations: 0.8088 MB / 0.9532 GB, free: 18.98 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 preOpt removeSimpleEquations (simulation): time 0.004301/0.8129, allocations: 4.81 MB / 0.9579 GB, free: 15.73 MB / 0.7325 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002801/0.8157, allocations: 4.025 MB / 0.9618 GB, free: 11.46 MB / 0.7325 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005005/0.8162, allocations: 349.8 kB / 0.9621 GB, free: 11.46 MB / 0.7325 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002973/0.8165, allocations: 198.4 kB / 0.9623 GB, free: 11.27 MB / 0.7325 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0005379/0.817, allocations: 334.1 kB / 0.9626 GB, free: 11.19 MB / 0.7325 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.0005336/0.8176, allocations: 28.53 kB / 0.9627 GB, free: 11.18 MB / 0.7325 GB Notification: Performance of pre-optimization done (n=35): time 1.813e-06/0.8176, allocations: 0 / 0.9627 GB, free: 11.18 MB / 0.7325 GB Notification: Performance of matching and sorting (n=35): time 0.004478/0.8221, allocations: 1.606 MB / 0.9642 GB, free: 10.89 MB / 0.7325 GB Notification: Performance of inlineWhenForInitialization (initialization): time 9.353e-05/0.8222, allocations: 88.86 kB / 0.9643 GB, free: 10.8 MB / 0.7325 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001576/0.8238, allocations: 1.17 MB / 0.9655 GB, free: 10.65 MB / 0.7325 GB Notification: Performance of collectPreVariables (initialization): time 5.554e-05/0.8238, allocations: 41.86 kB / 0.9655 GB, free: 10.62 MB / 0.7325 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003627/0.8242, allocations: 0.5159 MB / 0.966 GB, free: 10.44 MB / 0.7325 GB Notification: Performance of collectInitialBindings (initialization): time 7.952e-05/0.8243, allocations: 125.7 kB / 0.9661 GB, free: 10.36 MB / 0.7325 GB Notification: Performance of simplifyInitialFunctions (initialization): time 2.55e-05/0.8243, allocations: 8.031 kB / 0.9661 GB, free: 10.36 MB / 0.7325 GB Notification: Performance of setup shared object (initialization): time 0.0001098/0.8244, allocations: 327.4 kB / 0.9665 GB, free: 10.05 MB / 0.7325 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003476/0.8248, allocations: 206.8 kB / 0.9667 GB, free: 10.05 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0006132/0.8254, allocations: 0.5365 MB / 0.9672 GB, free: 9.676 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0005149/0.8259, allocations: 316 kB / 0.9675 GB, free: 9.625 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.592e-06/0.826, allocations: 4.125 kB / 0.9675 GB, free: 9.625 MB / 0.7325 GB Notification: Performance of matching and sorting (n=58) (initialization): time 0.001963/0.8279, allocations: 1.05 MB / 0.9685 GB, free: 9.402 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001666/0.8281, allocations: 289 kB / 0.9688 GB, free: 9.078 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.102e-05/0.8281, allocations: 3.531 kB / 0.9688 GB, free: 9.078 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001151/0.8293, allocations: 335.4 kB / 0.9691 GB, free: 9.051 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003491/0.8296, allocations: 109.1 kB / 0.9692 GB, free: 9.039 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0009762/0.8306, allocations: 1.002 MB / 0.9702 GB, free: 8.504 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001046/0.8317, allocations: 97.81 kB / 0.9703 GB, free: 8.496 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.22e-05/0.8318, allocations: 27.25 kB / 0.9703 GB, free: 8.496 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 7.945e-06/0.8318, allocations: 3.375 kB / 0.9703 GB, free: 8.496 MB / 0.7325 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.001211/0.833, allocations: 0.7913 MB / 0.9711 GB, free: 8.324 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.12e-06/0.833, allocations: 3.938 kB / 0.9711 GB, free: 8.324 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004588/0.8335, allocations: 232.6 kB / 0.9713 GB, free: 8.262 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003102/0.8338, allocations: 104.1 kB / 0.9714 GB, free: 8.234 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002949/0.8367, allocations: 2.924 MB / 0.9743 GB, free: 6.465 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0008995/0.8377, allocations: 111.2 kB / 0.9744 GB, free: 6.414 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.178e-05/0.8377, allocations: 25.48 kB / 0.9744 GB, free: 6.41 MB / 0.7325 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 24 * Number of states: 0 () * Number of discrete variables: 5 ($whenCondition1,$PRE.pulse_m_flow.T_start,pulse_m_flow.T_start,$PRE.pulse_m_flow.count,pulse_m_flow.count) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (38): * Single equations (assignments): 36 * Array equations: 0 * Algorithm blocks: 1 * 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 {1 19} Notification: Performance of prepare postOptimizeDAE: time 0.0006034/0.8383, allocations: 473.5 kB / 0.9748 GB, free: 6.148 MB / 0.7325 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001075/0.8384, allocations: 106.7 kB / 0.9749 GB, free: 6.094 MB / 0.7325 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001148/0.8396, allocations: 0.794 MB / 0.9757 GB, free: 5.828 MB / 0.7325 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.378e-06/0.8396, allocations: 7.125 kB / 0.9757 GB, free: 5.824 MB / 0.7325 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.894e-06/0.8396, allocations: 0 / 0.9757 GB, free: 5.824 MB / 0.7325 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.172e-06/0.8396, allocations: 3.984 kB / 0.9757 GB, free: 5.82 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 0.002479/0.8421, allocations: 2.129 MB / 0.9778 GB, free: 4.637 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.18e-06/0.8421, allocations: 3.984 kB / 0.9778 GB, free: 4.633 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002709/0.8424, allocations: 80.25 kB / 0.9779 GB, free: 4.613 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0003352/0.8427, allocations: 170.7 kB / 0.9781 GB, free: 4.555 MB / 0.7325 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.625e-05/0.8428, allocations: 13.14 kB / 0.9781 GB, free: 4.551 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0006441/0.8434, allocations: 0.8559 MB / 0.9789 GB, free: 3.945 MB / 0.7325 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.739e-06/0.8434, allocations: 6.797 kB / 0.9789 GB, free: 3.941 MB / 0.7325 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001048/0.8445, allocations: 0.8688 MB / 0.9798 GB, free: 3.523 MB / 0.7325 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0003431/0.8449, allocations: 233.1 kB / 0.98 GB, free: 3.355 MB / 0.7325 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001363/0.845, allocations: 16.28 kB / 0.98 GB, free: 3.348 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0006164/0.8456, allocations: 75.7 kB / 0.9801 GB, free: 3.312 MB / 0.7325 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.824e-05/0.8457, allocations: 34.98 kB / 0.9801 GB, free: 3.297 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.248e-05/0.8457, allocations: 13.09 kB / 0.9801 GB, free: 3.297 MB / 0.7325 GB Notification: Performance of sorting global known variables: time 0.000899/0.8466, allocations: 0.8248 MB / 0.9809 GB, free: 3.027 MB / 0.7325 GB Notification: Performance of sort global known variables: time 1.9e-07/0.8467, allocations: 0 / 0.9809 GB, free: 3.027 MB / 0.7325 GB Notification: Performance of remove unused functions: time 0.001304/0.848, allocations: 0.5146 MB / 0.9814 GB, free: 2.977 MB / 0.7325 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * Number of states: 0 () * Number of discrete variables: 3 ($whenCondition1,pulse_m_flow.T_start,pulse_m_flow.count) * Number of discrete states: 1 (pulse_m_flow.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (25): * Single equations (assignments): 22 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * 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: 0 * Non-linear torn systems: 1 {1 10} Notification: Performance of Backend phase and start with SimCode phase: time 0.0003829/0.8484, allocations: 187.6 kB / 0.9816 GB, free: 2.855 MB / 0.7325 GB Notification: Performance of simCode: created initialization part: time 0.001726/0.8501, allocations: 1.128 MB / 0.9827 GB, free: 2.387 MB / 0.7325 GB Notification: Performance of simCode: created event and clocks part: time 2.705e-06/0.8501, allocations: 0 / 0.9827 GB, free: 2.387 MB / 0.7325 GB Notification: Performance of simCode: created simulation system equations: time 0.0003849/0.8505, allocations: 250.9 kB / 0.9829 GB, free: 2.332 MB / 0.7325 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002635/0.8531, allocations: 0.6517 MB / 0.9836 GB, free: 2.086 MB / 0.7325 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002584/0.8557, allocations: 2.101 MB / 0.9856 GB, free: 0.9102 MB / 0.7325 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006252/0.8564, allocations: 1.213 MB / 0.9868 GB, free: 20 kB / 0.7325 GB Notification: Performance of simCode: alias equations: time 0.00097/0.8573, allocations: 365.3 kB / 0.9872 GB, free: 15.87 MB / 0.7481 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001266/0.8575, allocations: 65.31 kB / 0.9872 GB, free: 15.86 MB / 0.7481 GB Notification: Performance of SimCode: time 3.51e-07/0.8575, allocations: 4 kB / 0.9872 GB, free: 15.86 MB / 0.7481 GB Notification: Performance of Templates: time 0.03066/0.8882, allocations: 20.84 MB / 1.008 GB, free: 5.594 MB / 0.7481 GB make -j1 -f Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised.makefile Environment - environmentSimulation: (rm -f Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised.pipe ; mkfifo Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised.pipe ; head -c 1048576 < Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised.pipe >> ../files/Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised.sim & ./Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised.pipe 2>&1) Environment - environmentSimulation: