Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Physiolibrary_Physiolibrary.SteadyStates.Examples.O2_in_water.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/Physiolibrary 2.3.1/package.mo", uses=false) Using package Physiolibrary with version 2.3.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Physiolibrary 2.3.1/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(Physiolibrary.SteadyStates.Examples.O2_in_water,fileNamePrefix="Physiolibrary_Physiolibrary_SteadyStates_Examples_O2_in_water",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Physiolibrary.SteadyStates.Examples.O2_in_water,fileNamePrefix="Physiolibrary_Physiolibrary_SteadyStates_Examples_O2_in_water",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 0.001069/0.001069, allocations: 86.72 kB / 15.06 MB, free: 1.09 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001321/0.001322, allocations: 168.7 kB / 15.95 MB, free: 204 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.549/1.549, allocations: 205.4 MB / 222.1 MB, free: 5.637 MB / 174.1 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Physiolibrary 2.3.1/Chemical.mo:1238:16-1238:88:writable] Warning: The file was not encoded in UTF-8: "

[1] Matej?k M, Kulh?nek T, Matouaek S. Adair-Based Hemoglobin...". Defaulting to 7-bit ASCII with unknown characters replaced by '?'. To change encoding when loading a file: loadFile(encoding="ISO-XXXX-YY"). To change it in a package: add a file package.encoding at the top-level. Note: The Modelica Language Specification only allows files encoded in UTF-8. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Physiolibrary 2.3.1/Chemical.mo:1632:61-1632:133:writable] Warning: The file was not encoded in UTF-8: "

Before silumation in "Dymola 2014 FD01" please set e...". Defaulting to 7-bit ASCII with unknown characters replaced by '?'. To change encoding when loading a file: loadFile(encoding="ISO-XXXX-YY"). To change it in a package: add a file package.encoding at the top-level. Note: The Modelica Language Specification only allows files encoded in UTF-8. Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Physiolibrary 2.3.1/package.mo): time 0.09363/0.09363, allocations: 15.41 MB / 285.8 MB, free: 5.867 MB / 238.1 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: Physiolibrary requested package Modelica of version 3.2.1. 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 0.0006021/0.0006025, allocations: 16 kB / 347.8 MB, free: 18.07 MB / 254.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1108/0.1114, allocations: 51.42 MB / 399.2 MB, free: 14.54 MB / 302.1 MB Notification: Performance of NFInst.instantiate(Physiolibrary.SteadyStates.Examples.O2_in_water): time 0.003339/0.1148, allocations: 2.319 MB / 401.5 MB, free: 12.2 MB / 302.1 MB Notification: Performance of NFInst.instExpressions: time 0.003382/0.1182, allocations: 1.903 MB / 403.4 MB, free: 10.29 MB / 302.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0001953/0.1185, allocations: 7.938 kB / 403.4 MB, free: 10.28 MB / 302.1 MB Notification: Performance of NFTyping.typeComponents: time 0.0001385/0.1186, allocations: 15.84 kB / 403.4 MB, free: 10.26 MB / 302.1 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Physiolibrary 2.3.1/Types.mo:6137:6-6153:18:writable] Warning: Pure function ‘Physiolibrary.SteadyStates.Examples.O2_in_water.oxygen_dissolved.Utilities.UnitConversions.findUnit‘ contains a call to impure function ‘Modelica.Utilities.Streams.print‘. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Physiolibrary 2.3.1/Types.mo:5568:15-5660:17:writable] Warning: Pure function ‘Physiolibrary.SteadyStates.Examples.O2_in_water.oxygen_dissolved.Utilities.readReal‘ contains a call to impure function ‘Physiolibrary.SteadyStates.Examples.O2_in_water.oxygen_dissolved.Utilities.UnitConversions.findUnit‘. Notification: Performance of NFTyping.typeBindings: time 0.0007546/0.1194, allocations: 215 kB / 403.7 MB, free: 10.05 MB / 302.1 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Physiolibrary 2.3.1/Types.mo:5714:15-5735:18:writable] Warning: Pure function ‘Physiolibrary.SteadyStates.Examples.O2_in_water.oxygen_dissolved.Utilities.writeReal‘ contains a call to impure function ‘Modelica.Utilities.Files.createDirectory‘. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Physiolibrary 2.3.1/Types.mo:5776:15-5812:24:writable] Warning: Pure function ‘Physiolibrary.SteadyStates.Examples.O2_in_water.oxygen_dissolved.Utilities.writeComparison‘ contains a call to impure function ‘Modelica.Utilities.Files.createDirectory‘. Notification: Performance of NFTyping.typeClassSections: time 0.0005904/0.12, allocations: 227.5 kB / 403.9 MB, free: 9.828 MB / 302.1 MB Notification: Performance of NFFlatten.flatten: time 0.0002827/0.1203, allocations: 222.7 kB / 404.1 MB, free: 9.609 MB / 302.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0001347/0.1204, allocations: 48.45 kB / 404.1 MB, free: 9.566 MB / 302.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0001444/0.1206, allocations: 67.72 kB / 404.2 MB, free: 9.5 MB / 302.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0001307/0.1207, allocations: 75.58 kB / 404.3 MB, free: 9.426 MB / 302.1 MB Notification: Performance of NFPackage.collectConstants: time 1.89e-05/0.1207, allocations: 4 kB / 404.3 MB, free: 9.422 MB / 302.1 MB Notification: Performance of NFFlatten.collectFunctions: time 2.66e-05/0.1208, allocations: 8 kB / 404.3 MB, free: 9.414 MB / 302.1 MB Notification: Performance of NFScalarize.scalarize: time 2.894e-05/0.1208, allocations: 19.92 kB / 404.3 MB, free: 9.395 MB / 302.1 MB Notification: Performance of NFVerifyModel.verify: time 5.072e-05/0.1209, allocations: 57.58 kB / 404.4 MB, free: 9.332 MB / 302.1 MB Notification: Performance of NFConvertDAE.convert: time 0.0001483/0.121, allocations: 123.9 kB / 404.5 MB, free: 9.211 MB / 302.1 MB Notification: Performance of FrontEnd - DAE generated: time 4.188e-06/0.121, allocations: 0 / 404.5 MB, free: 9.211 MB / 302.1 MB Notification: Performance of FrontEnd: time 1.452e-06/0.121, allocations: 0 / 404.5 MB, free: 9.211 MB / 302.1 MB Notification: Performance of Transformations before backend: time 4.779e-06/0.121, allocations: 4 kB / 404.5 MB, free: 9.207 MB / 302.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 29 * Number of variables: 29 Notification: Performance of Generate backend data structure: time 0.0007256/0.1218, allocations: 470.5 kB / 405 MB, free: 8.699 MB / 302.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.027e-05/0.1218, allocations: 12.03 kB / 405 MB, free: 8.688 MB / 302.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 5.082e-05/0.1219, allocations: 42.56 kB / 405 MB, free: 8.637 MB / 302.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 4.199e-05/0.1219, allocations: 15.81 kB / 405 MB, free: 8.621 MB / 302.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0002922/0.1222, allocations: 242.4 kB / 405.3 MB, free: 8.344 MB / 302.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.681e-05/0.1223, allocations: 15.98 kB / 405.3 MB, free: 8.328 MB / 302.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 2.032e-05/0.1223, allocations: 12 kB / 405.3 MB, free: 8.316 MB / 302.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0002579/0.1226, allocations: 122.1 kB / 405.4 MB, free: 8.191 MB / 302.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.22e-05/0.1226, allocations: 0 / 405.4 MB, free: 8.191 MB / 302.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 1.495e-05/0.1226, allocations: 4 kB / 405.4 MB, free: 8.188 MB / 302.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.494e-06/0.1226, allocations: 4 kB / 405.4 MB, free: 8.184 MB / 302.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.000222/0.1228, allocations: 99.94 kB / 405.5 MB, free: 8.086 MB / 302.1 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 0.0008652/0.1237, allocations: 0.5727 MB / 406.1 MB, free: 7.445 MB / 302.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.0001748/0.1239, allocations: 78.48 kB / 406.2 MB, free: 7.359 MB / 302.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 9.682e-05/0.124, allocations: 41 kB / 406.2 MB, free: 7.316 MB / 302.1 MB Notification: Performance of preOpt evalFunc (simulation): time 2.226e-05/0.124, allocations: 3.984 kB / 406.2 MB, free: 7.312 MB / 302.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.535e-05/0.1241, allocations: 38.56 kB / 406.2 MB, free: 7.266 MB / 302.1 MB Notification: Performance of pre-optimization done (n=7): time 1.353e-06/0.1241, allocations: 0 / 406.2 MB, free: 7.266 MB / 302.1 MB Notification: Performance of matching and sorting (n=13): time 0.001626/0.1257, allocations: 480.5 kB / 406.7 MB, free: 6.789 MB / 302.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 4.885e-05/0.1258, allocations: 51.41 kB / 406.8 MB, free: 6.727 MB / 302.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0002118/0.126, allocations: 203.9 kB / 407 MB, free: 6.516 MB / 302.1 MB Notification: Performance of collectPreVariables (initialization): time 1.909e-05/0.126, allocations: 41.64 kB / 407 MB, free: 6.469 MB / 302.1 MB Notification: Performance of collectInitialEqns (initialization): time 8.752e-05/0.1261, allocations: 147.9 kB / 407.1 MB, free: 6.32 MB / 302.1 MB Notification: Performance of collectInitialBindings (initialization): time 3.594e-05/0.1261, allocations: 43.36 kB / 407.2 MB, free: 6.277 MB / 302.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 1.148e-05/0.1262, allocations: 4 kB / 407.2 MB, free: 6.273 MB / 302.1 MB Notification: Performance of setup shared object (initialization): time 0.0001167/0.1263, allocations: 330.8 kB / 407.5 MB, free: 5.941 MB / 302.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001681/0.1265, allocations: 67.97 kB / 407.6 MB, free: 5.875 MB / 302.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002044/0.1267, allocations: 141.3 kB / 407.7 MB, free: 5.703 MB / 302.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.0002009/0.1269, allocations: 92.09 kB / 407.8 MB, free: 5.613 MB / 302.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.783e-06/0.1269, allocations: 0 / 407.8 MB, free: 5.613 MB / 302.1 MB Notification: Performance of matching and sorting (n=24) (initialization): time 0.000481/0.1274, allocations: 253.2 kB / 408.1 MB, free: 5.359 MB / 302.1 MB Notification: Performance of prepare postOptimizeDAE: time 1.882e-05/0.1274, allocations: 8 kB / 408.1 MB, free: 5.352 MB / 302.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.294e-06/0.1274, allocations: 0 / 408.1 MB, free: 5.352 MB / 302.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 1.681e-05/0.1275, allocations: 11.95 kB / 408.1 MB, free: 5.34 MB / 302.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003159/0.1278, allocations: 76.17 kB / 408.2 MB, free: 5.266 MB / 302.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.04e-05/0.1278, allocations: 4 kB / 408.2 MB, free: 5.262 MB / 302.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0001754/0.128, allocations: 23.89 kB / 408.2 MB, free: 5.238 MB / 302.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 1.794e-05/0.128, allocations: 8 kB / 408.2 MB, free: 5.23 MB / 302.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 11 * 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 (24): * Single equations (assignments): 24 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * 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 0.0001132/0.1281, allocations: 145.7 kB / 408.3 MB, free: 5.078 MB / 302.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 4.104e-05/0.1282, allocations: 19.81 kB / 408.3 MB, free: 5.059 MB / 302.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0004796/0.1287, allocations: 211 kB / 408.6 MB, free: 4.844 MB / 302.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.905e-06/0.1287, allocations: 0 / 408.6 MB, free: 4.844 MB / 302.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.333e-06/0.1287, allocations: 11.89 kB / 408.6 MB, free: 4.832 MB / 302.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.637e-06/0.1287, allocations: 0 / 408.6 MB, free: 4.832 MB / 302.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0003121/0.129, allocations: 265.5 kB / 408.8 MB, free: 4.523 MB / 302.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.056e-06/0.129, allocations: 4 kB / 408.8 MB, free: 4.52 MB / 302.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002529/0.1293, allocations: 47.97 kB / 408.9 MB, free: 4.473 MB / 302.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 3.556e-06/0.1293, allocations: 4 kB / 408.9 MB, free: 4.469 MB / 302.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.734e-05/0.1293, allocations: 11.98 kB / 408.9 MB, free: 4.457 MB / 302.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.774e-06/0.1293, allocations: 0 / 408.9 MB, free: 4.457 MB / 302.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.395e-06/0.1293, allocations: 0 / 408.9 MB, free: 4.457 MB / 302.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0004882/0.1298, allocations: 295.1 kB / 409.2 MB, free: 4.152 MB / 302.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0001086/0.1299, allocations: 104.8 kB / 409.3 MB, free: 4.031 MB / 302.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 3.344e-05/0.13, allocations: 4 kB / 409.3 MB, free: 4.027 MB / 302.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0001677/0.1302, allocations: 15.98 kB / 409.3 MB, free: 4.012 MB / 302.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 5.179e-05/0.1302, allocations: 11.98 kB / 409.3 MB, free: 4 MB / 302.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.025e-05/0.1302, allocations: 4 kB / 409.3 MB, free: 3.996 MB / 302.1 MB Notification: Performance of sorting global known variables: time 0.0001413/0.1304, allocations: 149.8 kB / 409.5 MB, free: 3.852 MB / 302.1 MB Notification: Performance of sort global known variables: time 1.41e-07/0.1304, allocations: 0 / 409.5 MB, free: 3.852 MB / 302.1 MB Notification: Performance of remove unused functions: time 0.0003079/0.1307, allocations: 44 kB / 409.5 MB, free: 3.809 MB / 302.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * 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 simulation (14): * Single equations (assignments): 14 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * 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 Backend phase and start with SimCode phase: time 0.0006757/0.1314, allocations: 0.806 MB / 410.3 MB, free: 2.977 MB / 302.1 MB Notification: Performance of simCode: created initialization part: time 0.0004113/0.1318, allocations: 188.3 kB / 410.5 MB, free: 2.793 MB / 302.1 MB Notification: Performance of simCode: created event and clocks part: time 2.305e-06/0.1318, allocations: 0.625 kB / 410.5 MB, free: 2.793 MB / 302.1 MB Notification: Performance of simCode: created simulation system equations: time 0.0001703/0.132, allocations: 83.91 kB / 410.6 MB, free: 2.711 MB / 302.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0004497/0.1325, allocations: 48.64 kB / 410.6 MB, free: 2.664 MB / 302.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002015/0.1345, allocations: 1.241 MB / 411.9 MB, free: 1.348 MB / 302.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0003181/0.1348, allocations: 0.7287 MB / 412.6 MB, free: 0.5938 MB / 302.1 MB Notification: Performance of simCode: alias equations: time 0.0001627/0.135, allocations: 29.92 kB / 412.6 MB, free: 0.5625 MB / 302.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001144/0.1351, allocations: 59.42 kB / 412.7 MB, free: 0.5078 MB / 302.1 MB Notification: Performance of SimCode: time 2.6e-07/0.1351, allocations: 3.938 kB / 412.7 MB, free: 0.5039 MB / 302.1 MB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.01776/0.1529, allocations: 3.986 MB / 416.7 MB, free: 12.51 MB / 318.1 MB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0001971/0.1531, allocations: 186.7 kB / 416.9 MB, free: 12.26 MB / 318.1 MB Notification: Performance of buildModelFMU: Generate platform static: time 1.797/1.95, allocations: 0 / 416.9 MB, free: 12.26 MB / 318.1 MB (rm -f Physiolibrary_Physiolibrary.SteadyStates.Examples.O2_in_water.pipe ; mkfifo Physiolibrary_Physiolibrary.SteadyStates.Examples.O2_in_water.pipe ; head -c 1048576 < Physiolibrary_Physiolibrary.SteadyStates.Examples.O2_in_water.pipe >> ../files/Physiolibrary_Physiolibrary.SteadyStates.Examples.O2_in_water.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator --tempDir=temp_Physiolibrary_Physiolibrary_SteadyStates_Examples_O2_in_water_fmu --startTime=0 --stopTime=100 --timeout=50 --tolerance=1e-06 Physiolibrary_Physiolibrary_SteadyStates_Examples_O2_in_water.fmu > Physiolibrary_Physiolibrary.SteadyStates.Examples.O2_in_water.pipe 2>&1) Environment - environmentSimulation: