Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.Examples.Tutorial.Boiler.System2.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 7.0.3-maint.7.0.x/package.mo", uses=false) Using package Buildings with version 7.0.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.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.Examples.Tutorial.Boiler.System2,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Examples.Tutorial.Boiler.System2") translateModel(Buildings.Examples.Tutorial.Boiler.System2,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Examples.Tutorial.Boiler.System2") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0007742/0.0007743, allocations: 98.19 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 0.004056/0.004056, allocations: 169.8 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 1.187/1.187, allocations: 205.4 MB / 222.4 MB, free: 5.57 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo): time 1.332/1.332, allocations: 252 MB / 0.5105 GB, free: 4.648 MB / 414.1 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 0.0004434/0.0004435, allocations: 15.98 kB / 0.6249 GB, free: 0.7109 MB / 0.5137 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.4021/0.4026, allocations: 106.3 MB / 0.7287 GB, free: 11.43 MB / 0.545 GB Notification: Performance of NFInst.instantiate(Buildings.Examples.Tutorial.Boiler.System2): time 0.5429/0.9455, allocations: 203.9 MB / 0.9278 GB, free: 1.836 MB / 0.7169 GB Notification: Performance of NFInst.instExpressions: time 0.02325/0.9688, allocations: 19.9 MB / 0.9472 GB, free: 1.461 MB / 0.7169 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002839/0.9717, allocations: 77.75 kB / 0.9473 GB, free: 1.461 MB / 0.7169 GB Notification: Performance of NFTyping.typeComponents: time 0.003126/0.9748, allocations: 1.134 MB / 0.9484 GB, free: 1.426 MB / 0.7169 GB Notification: Performance of NFTyping.typeBindings: time 0.009376/0.9842, allocations: 3.109 MB / 0.9515 GB, free: 1.277 MB / 0.7169 GB Notification: Performance of NFTyping.typeClassSections: time 0.009285/0.9935, allocations: 3.191 MB / 0.9546 GB, free: 1.172 MB / 0.7169 GB Notification: Performance of NFFlatten.flatten: time 0.01339/1.007, allocations: 13.6 MB / 0.9679 GB, free: 1.145 MB / 0.7169 GB Notification: Performance of NFFlatten.resolveConnections: time 0.004853/1.012, allocations: 3.195 MB / 0.971 GB, free: 16.66 MB / 0.7325 GB Notification: Performance of NFEvalConstants.evaluate: time 0.005628/1.017, allocations: 2.865 MB / 0.9738 GB, free: 16.64 MB / 0.7325 GB Notification: Performance of NFSimplifyModel.simplify: time 0.005026/1.022, allocations: 2.812 MB / 0.9765 GB, free: 16.61 MB / 0.7325 GB Notification: Performance of NFPackage.collectConstants: time 0.0009855/1.023, allocations: 147.2 kB / 0.9767 GB, free: 16.61 MB / 0.7325 GB Notification: Performance of NFFlatten.collectFunctions: time 0.005906/1.029, allocations: 2.378 MB / 0.979 GB, free: 16.58 MB / 0.7325 GB Notification: Performance of NFScalarize.scalarize: time 0.00165/1.031, allocations: 0.9166 MB / 0.9799 GB, free: 16.52 MB / 0.7325 GB Notification: Performance of NFVerifyModel.verify: time 0.003807/1.035, allocations: 1.87 MB / 0.9817 GB, free: 15.8 MB / 0.7325 GB Notification: Performance of NFConvertDAE.convert: time 0.009045/1.044, allocations: 6.551 MB / 0.9881 GB, free: 12.42 MB / 0.7325 GB Notification: Performance of FrontEnd - DAE generated: time 4.739e-06/1.044, allocations: 2.938 kB / 0.9881 GB, free: 12.42 MB / 0.7325 GB Notification: Performance of FrontEnd: time 2.815e-06/1.044, allocations: 0 / 0.9881 GB, free: 12.42 MB / 0.7325 GB Notification: Performance of Transformations before backend: time 0.0001607/1.044, allocations: 0 / 0.9881 GB, free: 12.42 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: 588 * Number of variables: 588 Notification: Performance of Generate backend data structure: time 0.00679/1.051, allocations: 3.79 MB / 0.9918 GB, free: 10.12 MB / 0.7325 GB Notification: Performance of prepare preOptimizeDAE: time 4.154e-05/1.051, allocations: 8.625 kB / 0.9918 GB, free: 10.12 MB / 0.7325 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004981/1.056, allocations: 0.9622 MB / 0.9928 GB, free: 9.719 MB / 0.7325 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.006328/1.062, allocations: 3.858 MB / 0.9965 GB, free: 8.203 MB / 0.7325 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001233/1.062, allocations: 184.2 kB / 0.9967 GB, free: 8.195 MB / 0.7325 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0003898/1.063, allocations: 250.3 kB / 0.9969 GB, free: 8.191 MB / 0.7325 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.004511/1.067, allocations: 3.166 MB / 1 GB, free: 6.469 MB / 0.7325 GB Notification: Performance of preOpt findStateOrder (simulation): time 4.812e-05/1.067, allocations: 5.094 kB / 1 GB, free: 6.469 MB / 0.7325 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0002261/1.068, allocations: 100.8 kB / 1 GB, free: 6.395 MB / 0.7325 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.738e-05/1.068, allocations: 104.5 kB / 1 GB, free: 6.375 MB / 0.7325 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003648/1.071, allocations: 2.616 MB / 1.003 GB, free: 5.07 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 0.017/1.088, allocations: 13.11 MB / 1.016 GB, free: 8.434 MB / 0.7481 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002546/1.091, allocations: 2.135 MB / 1.018 GB, free: 6.23 MB / 0.7481 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001264/1.092, allocations: 0.9321 MB / 1.019 GB, free: 5.297 MB / 0.7481 GB Notification: Performance of preOpt evalFunc (simulation): time 0.009059/1.101, allocations: 4.434 MB / 1.023 GB, free: 0.668 MB / 0.7481 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001433/1.103, allocations: 0.9044 MB / 1.024 GB, free: 15.76 MB / 0.7637 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.0009645/1.104, allocations: 174.4 kB / 1.024 GB, free: 15.59 MB / 0.7637 GB Notification: Performance of pre-optimization done (n=130): time 3.336e-06/1.104, allocations: 0 / 1.024 GB, free: 15.59 MB / 0.7637 GB Notification: Performance of matching and sorting (n=134): time 0.009546/1.113, allocations: 5.392 MB / 1.029 GB, free: 10.04 MB / 0.7637 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.714e-05/1.113, allocations: 122.6 kB / 1.029 GB, free: 9.891 MB / 0.7637 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003371/1.117, allocations: 2.897 MB / 1.032 GB, free: 6.984 MB / 0.7637 GB Notification: Performance of collectPreVariables (initialization): time 0.0001561/1.117, allocations: 65.06 kB / 1.032 GB, free: 6.918 MB / 0.7637 GB Notification: Performance of collectInitialEqns (initialization): time 0.001178/1.118, allocations: 1.525 MB / 1.034 GB, free: 5.387 MB / 0.7637 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003663/1.119, allocations: 481.5 kB / 1.034 GB, free: 4.922 MB / 0.7637 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002414/1.119, allocations: 185.7 kB / 1.034 GB, free: 4.734 MB / 0.7637 GB Notification: Performance of setup shared object (initialization): time 8.003e-05/1.119, allocations: 301.1 kB / 1.035 GB, free: 4.438 MB / 0.7637 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002044/1.121, allocations: 1.031 MB / 1.036 GB, free: 3.402 MB / 0.7637 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002378/1.123, allocations: 1.597 MB / 1.037 GB, free: 1.562 MB / 0.7637 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.003665/1.127, allocations: 2.481 MB / 1.04 GB, free: 14.93 MB / 0.7794 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 9.848e-06/1.127, allocations: 7.938 kB / 1.04 GB, free: 14.93 MB / 0.7794 GB Notification: Performance of matching and sorting (n=260) (initialization): time 0.008958/1.136, allocations: 3.642 MB / 1.043 GB, free: 11.36 MB / 0.7794 GB Notification: Performance of prepare postOptimizeDAE: time 0.0002934/1.136, allocations: 0.5559 MB / 1.044 GB, free: 10.6 MB / 0.7794 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.51e-05/1.136, allocations: 20 kB / 1.044 GB, free: 10.58 MB / 0.7794 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.006847/1.143, allocations: 1.163 MB / 1.045 GB, free: 9.414 MB / 0.7794 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001665/1.145, allocations: 471.5 kB / 1.045 GB, free: 8.98 MB / 0.7794 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.004536/1.149, allocations: 3.044 MB / 1.048 GB, free: 5.793 MB / 0.7794 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002532/1.152, allocations: 232.1 kB / 1.049 GB, free: 5.566 MB / 0.7794 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001854/1.152, allocations: 104.1 kB / 1.049 GB, free: 5.465 MB / 0.7794 GB Notification: Performance of prepare postOptimizeDAE: time 7.494e-06/1.152, allocations: 7.938 kB / 1.049 GB, free: 5.457 MB / 0.7794 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.008305/1.16, allocations: 3.226 MB / 1.052 GB, free: 2.32 MB / 0.7794 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.597e-05/1.16, allocations: 24 kB / 1.052 GB, free: 2.297 MB / 0.7794 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.006908/1.167, allocations: 1.194 MB / 1.053 GB, free: 1.102 MB / 0.7794 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001836/1.169, allocations: 463.7 kB / 1.053 GB, free: 0.6758 MB / 0.7794 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.004657/1.174, allocations: 3.049 MB / 1.056 GB, free: 13.48 MB / 0.795 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002747/1.177, allocations: 220.3 kB / 1.057 GB, free: 13.27 MB / 0.795 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001743/1.177, allocations: 95.97 kB / 1.057 GB, free: 13.18 MB / 0.795 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 70 * Number of states: 0 () * Number of discrete variables: 7 ($PRE.timTab.tab.nextTimeEvent,$whenCondition1,hysPum.y,$PRE.hysPum.y,timTab.tab.nextTimeEventScaled,$PRE.timTab.tab.nextTimeEventScaled,timTab.tab.nextTimeEvent) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (242): * Single equations (assignments): 237 * Array equations: 2 * Algorithm blocks: 0 * Record equations: 1 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(1,5,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(3,8)} Notification: Performance of prepare postOptimizeDAE: time 0.001815/1.179, allocations: 1.091 MB / 1.058 GB, free: 12.11 MB / 0.795 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0004865/1.179, allocations: 308.2 kB / 1.058 GB, free: 11.8 MB / 0.795 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003903/1.183, allocations: 2.267 MB / 1.06 GB, free: 9.523 MB / 0.795 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.698e-05/1.183, allocations: 19.98 kB / 1.06 GB, free: 9.504 MB / 0.795 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.234e-06/1.183, allocations: 4 kB / 1.06 GB, free: 9.5 MB / 0.795 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.002877/1.186, allocations: 1.956 MB / 1.062 GB, free: 7.465 MB / 0.795 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 0.007047/1.193, allocations: 4.965 MB / 1.067 GB, free: 2.449 MB / 0.795 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.935e-06/1.193, allocations: 7.922 kB / 1.067 GB, free: 2.441 MB / 0.795 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001321/1.194, allocations: 292.5 kB / 1.067 GB, free: 2.168 MB / 0.795 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0006866/1.195, allocations: 263.5 kB / 1.068 GB, free: 1.895 MB / 0.795 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 9.649e-05/1.195, allocations: 47.97 kB / 1.068 GB, free: 1.848 MB / 0.795 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.005585/1.201, allocations: 8.671 MB / 1.076 GB, free: 8.434 MB / 0.8106 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.998e-06/1.201, allocations: 8.016 kB / 1.076 GB, free: 8.426 MB / 0.8106 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.004618/1.205, allocations: 3.149 MB / 1.079 GB, free: 5.234 MB / 0.8106 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001103/1.207, allocations: 0.5869 MB / 1.08 GB, free: 4.625 MB / 0.8106 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0005164/1.207, allocations: 39.98 kB / 1.08 GB, free: 4.586 MB / 0.8106 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.00173/1.209, allocations: 163.8 kB / 1.08 GB, free: 4.426 MB / 0.8106 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001926/1.209, allocations: 99.61 kB / 1.08 GB, free: 4.332 MB / 0.8106 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001209/1.209, allocations: 67.94 kB / 1.08 GB, free: 4.266 MB / 0.8106 GB Notification: Performance of sorting global known variables: time 0.00247/1.212, allocations: 1.959 MB / 1.082 GB, free: 2.312 MB / 0.8106 GB Notification: Performance of sort global known variables: time 1.7e-07/1.212, allocations: 0 / 1.082 GB, free: 2.312 MB / 0.8106 GB Notification: Performance of remove unused functions: time 0.004039/1.216, allocations: 1.535 MB / 1.084 GB, free: 0.7812 MB / 0.8106 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 6 * Number of states: 12 (vol.dynBal.medium.Xi[1],vol.dynBal.m,heaCap.T,rad.vol[1].dynBal.U,rad.vol[2].dynBal.U,rad.vol[3].dynBal.U,rad.vol[4].dynBal.U,rad.vol[5].dynBal.U,temSup.T,pumRad.vol.dynBal.U,pumRad.filter.x[1],pumRad.filter.x[2]) * Number of discrete variables: 4 ($whenCondition1,timTab.tab.nextTimeEvent,timTab.tab.nextTimeEventScaled,hysPum.y) * Number of discrete states: 3 (timTab.tab.nextTimeEvent,hysPum.y,timTab.tab.nextTimeEventScaled) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (140): * Single equations (assignments): 126 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 6 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 6 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 6 systems {(1,3,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.001875/1.218, allocations: 0.8659 MB / 1.084 GB, free: 124 kB / 0.8106 GB Notification: Performance of simCode: created initialization part: time 0.009199/1.227, allocations: 4.271 MB / 1.089 GB, free: 11.93 MB / 0.8262 GB Notification: Performance of simCode: created event and clocks part: time 7.153e-06/1.227, allocations: 8.5 kB / 1.089 GB, free: 11.92 MB / 0.8262 GB Notification: Performance of simCode: created simulation system equations: time 0.001856/1.229, allocations: 1.574 MB / 1.09 GB, free: 10.3 MB / 0.8262 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.007611/1.236, allocations: 1.702 MB / 1.092 GB, free: 8.617 MB / 0.8262 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01049/1.247, allocations: 7.943 MB / 1.1 GB, free: 0.6562 MB / 0.8262 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001959/1.249, allocations: 2.381 MB / 1.102 GB, free: 14.25 MB / 0.8419 GB Notification: Performance of simCode: alias equations: time 0.00349/1.252, allocations: 1.097 MB / 1.103 GB, free: 13.14 MB / 0.8419 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0005531/1.253, allocations: 246 kB / 1.103 GB, free: 12.91 MB / 0.8419 GB Notification: Performance of SimCode: time 5.71e-07/1.253, allocations: 0 / 1.103 GB, free: 12.91 MB / 0.8419 GB Notification: Performance of Templates: time 0.1007/1.354, allocations: 71.79 MB / 1.173 GB, free: 6.012 MB / 0.9044 GB make -j1 -f Buildings_maint.7.0.x_Buildings.Examples.Tutorial.Boiler.System2.makefile Environment - environmentSimulation: (rm -f Buildings_maint.7.0.x_Buildings.Examples.Tutorial.Boiler.System2.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.Examples.Tutorial.Boiler.System2.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.Examples.Tutorial.Boiler.System2.pipe >> ../files/Buildings_maint.7.0.x_Buildings.Examples.Tutorial.Boiler.System2.sim & ./Buildings_maint.7.0.x_Buildings.Examples.Tutorial.Boiler.System2 -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.7.0.x_Buildings.Examples.Tutorial.Boiler.System2.pipe 2>&1) Environment - environmentSimulation: