Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow.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.Fluid.Movers.Validation.FlowControlled_m_flow,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow") translateModel(Buildings.Fluid.Movers.Validation.FlowControlled_m_flow,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001735/0.001734, allocations: 111.3 kB / 15.23 MB, free: 0.6406 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.002053/0.002054, allocations: 196.2 kB / 16.14 MB, free: 6.703 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.662/1.662, allocations: 205.1 MB / 222 MB, free: 4.98 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 1.549/1.549, allocations: 251.6 MB / 0.5088 GB, free: 3.316 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 0.00143/0.00143, allocations: 59.91 kB / 0.6216 GB, free: 1.938 MB / 0.5137 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.5954/0.5969, allocations: 104.7 MB / 0.7238 GB, free: 13.18 MB / 0.545 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Movers.Validation.FlowControlled_m_flow): time 1.009/1.606, allocations: 322.3 MB / 1.039 GB, free: 8.758 MB / 0.7325 GB Notification: Performance of NFInst.instExpressions: time 0.05131/1.657, allocations: 23.61 MB / 1.062 GB, free: 4.594 MB / 0.7481 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.007962/1.665, allocations: 83.16 kB / 1.062 GB, free: 4.547 MB / 0.7481 GB Notification: Performance of NFTyping.typeComponents: time 0.008399/1.674, allocations: 1.317 MB / 1.063 GB, free: 3.414 MB / 0.7481 GB Notification: Performance of NFTyping.typeBindings: time 0.02403/1.698, allocations: 4.018 MB / 1.067 GB, free: 15.38 MB / 0.7637 GB Notification: Performance of NFTyping.typeClassSections: time 0.01292/1.711, allocations: 2.097 MB / 1.069 GB, free: 13.29 MB / 0.7637 GB Notification: Performance of NFFlatten.flatten: time 0.01973/1.731, allocations: 8.06 MB / 1.077 GB, free: 5.219 MB / 0.7637 GB Notification: Performance of NFFlatten.resolveConnections: time 0.006563/1.737, allocations: 1.874 MB / 1.079 GB, free: 3.297 MB / 0.7637 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01259/1.75, allocations: 2.809 MB / 1.081 GB, free: 488 kB / 0.7637 GB Notification: Performance of NFSimplifyModel.simplify: time 0.007206/1.757, allocations: 1.832 MB / 1.083 GB, free: 14.64 MB / 0.7794 GB Notification: Performance of NFPackage.collectConstants: time 0.001248/1.758, allocations: 116 kB / 1.083 GB, free: 14.52 MB / 0.7794 GB Notification: Performance of NFFlatten.collectFunctions: time 0.01037/1.769, allocations: 4.049 MB / 1.087 GB, free: 10.47 MB / 0.7794 GB Notification: Performance of NFScalarize.scalarize: time 0.001826/1.771, allocations: 0.7865 MB / 1.088 GB, free: 9.68 MB / 0.7794 GB Notification: Performance of NFVerifyModel.verify: time 0.003448/1.774, allocations: 1.228 MB / 1.089 GB, free: 8.445 MB / 0.7794 GB Notification: Performance of NFConvertDAE.convert: time 0.01403/1.788, allocations: 4.849 MB / 1.094 GB, free: 3.582 MB / 0.7794 GB Notification: Performance of FrontEnd - DAE generated: time 5.841e-06/1.788, allocations: 4 kB / 1.094 GB, free: 3.578 MB / 0.7794 GB Notification: Performance of FrontEnd: time 1.222e-06/1.788, allocations: 0 / 1.094 GB, free: 3.578 MB / 0.7794 GB Notification: Performance of Transformations before backend: time 0.0001626/1.788, allocations: 0 / 1.094 GB, free: 3.578 MB / 0.7794 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 343 * Number of variables: 343 Notification: Performance of Generate backend data structure: time 0.009698/1.798, allocations: 2.99 MB / 1.097 GB, free: 0.5195 MB / 0.7794 GB Notification: Performance of prepare preOptimizeDAE: time 4.992e-05/1.798, allocations: 12.03 kB / 1.097 GB, free: 0.5078 MB / 0.7794 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.006026/1.804, allocations: 0.8125 MB / 1.098 GB, free: 15.69 MB / 0.795 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.005265/1.81, allocations: 1.85 MB / 1.099 GB, free: 13.77 MB / 0.795 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.000398/1.81, allocations: 174.4 kB / 1.1 GB, free: 13.59 MB / 0.795 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0003228/1.81, allocations: 156 kB / 1.1 GB, free: 13.44 MB / 0.795 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.003621/1.814, allocations: 1.667 MB / 1.101 GB, free: 11.72 MB / 0.795 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.587e-05/1.814, allocations: 7.938 kB / 1.101 GB, free: 11.71 MB / 0.795 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001359/1.814, allocations: 56 kB / 1.101 GB, free: 11.66 MB / 0.795 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 6.189e-05/1.814, allocations: 46.62 kB / 1.101 GB, free: 11.61 MB / 0.795 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.00374/1.818, allocations: 1.412 MB / 1.103 GB, free: 10.19 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 preOpt removeSimpleEquations (simulation): time 0.01544/1.833, allocations: 7.696 MB / 1.11 GB, free: 1.902 MB / 0.795 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002167/1.836, allocations: 1.052 MB / 1.111 GB, free: 0.8047 MB / 0.795 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001156/1.837, allocations: 0.5064 MB / 1.112 GB, free: 304 kB / 0.795 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002298/1.837, allocations: 110 kB / 1.112 GB, free: 176 kB / 0.795 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.649e-05/1.837, allocations: 43.22 kB / 1.112 GB, free: 124 kB / 0.795 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.001421/1.839, allocations: 199 kB / 1.112 GB, free: 15.93 MB / 0.8106 GB Notification: Performance of pre-optimization done (n=76): time 3.878e-06/1.839, allocations: 3.938 kB / 1.112 GB, free: 15.92 MB / 0.8106 GB Notification: Performance of matching and sorting (n=76): time 0.003552/1.842, allocations: 1.378 MB / 1.114 GB, free: 14.54 MB / 0.8106 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.838e-05/1.842, allocations: 64.05 kB / 1.114 GB, free: 14.46 MB / 0.8106 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002399/1.845, allocations: 1.785 MB / 1.115 GB, free: 12.64 MB / 0.8106 GB Notification: Performance of collectPreVariables (initialization): time 0.0001112/1.845, allocations: 41.7 kB / 1.115 GB, free: 12.59 MB / 0.8106 GB Notification: Performance of collectInitialEqns (initialization): time 0.0007523/1.845, allocations: 0.9839 MB / 1.116 GB, free: 11.6 MB / 0.8106 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002372/1.846, allocations: 268.1 kB / 1.117 GB, free: 11.34 MB / 0.8106 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003203/1.846, allocations: 230.4 kB / 1.117 GB, free: 11.11 MB / 0.8106 GB Notification: Performance of setup shared object (initialization): time 0.000132/1.846, allocations: 345.9 kB / 1.117 GB, free: 10.76 MB / 0.8106 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001031/1.847, allocations: 464.6 kB / 1.118 GB, free: 10.3 MB / 0.8106 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001314/1.849, allocations: 0.8547 MB / 1.118 GB, free: 9.266 MB / 0.8106 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.002212/1.851, allocations: 1.247 MB / 1.12 GB, free: 7.883 MB / 0.8106 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 8.336e-06/1.851, allocations: 4 kB / 1.12 GB, free: 7.879 MB / 0.8106 GB Notification: Performance of matching and sorting (n=126) (initialization): time 0.002999/1.854, allocations: 1.444 MB / 1.121 GB, free: 6.426 MB / 0.8106 GB Notification: Performance of prepare postOptimizeDAE: time 2.532e-05/1.854, allocations: 15.98 kB / 1.121 GB, free: 6.41 MB / 0.8106 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.682e-05/1.854, allocations: 8 kB / 1.121 GB, free: 6.402 MB / 0.8106 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.834e-05/1.854, allocations: 16 kB / 1.121 GB, free: 6.387 MB / 0.8106 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001252/1.855, allocations: 279.9 kB / 1.121 GB, free: 6.113 MB / 0.8106 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0003702/1.856, allocations: 0.6055 MB / 1.122 GB, free: 5.484 MB / 0.8106 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001764/1.857, allocations: 145.1 kB / 1.122 GB, free: 5.344 MB / 0.8106 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 9.838e-05/1.857, allocations: 55.97 kB / 1.122 GB, free: 5.289 MB / 0.8106 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001762/1.859, allocations: 0.8376 MB / 1.123 GB, free: 4.445 MB / 0.8106 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.00116/1.86, allocations: 0.8101 MB / 1.124 GB, free: 3.461 MB / 0.8106 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001924/1.862, allocations: 1.146 MB / 1.125 GB, free: 2.184 MB / 0.8106 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 6.723e-06/1.862, allocations: 8 kB / 1.125 GB, free: 2.176 MB / 0.8106 GB Notification: Performance of matching and sorting (n=126) (initialization_lambda0): time 0.0027/1.865, allocations: 1.335 MB / 1.126 GB, free: 0.832 MB / 0.8106 GB Notification: Performance of prepare postOptimizeDAE: time 1.73e-05/1.865, allocations: 8 kB / 1.126 GB, free: 0.8242 MB / 0.8106 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.338e-05/1.865, allocations: 8 kB / 1.126 GB, free: 0.8164 MB / 0.8106 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.603e-05/1.865, allocations: 16 kB / 1.126 GB, free: 0.8008 MB / 0.8106 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000961/1.866, allocations: 255.9 kB / 1.127 GB, free: 0.5508 MB / 0.8106 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.252e-05/1.866, allocations: 23.86 kB / 1.127 GB, free: 0.5273 MB / 0.8106 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001715/1.868, allocations: 145.6 kB / 1.127 GB, free: 392 kB / 0.8106 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.731e-05/1.868, allocations: 51.98 kB / 1.127 GB, free: 340 kB / 0.8106 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 43 * 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 (124): * Single equations (assignments): 121 * Array equations: 2 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 1 * Torn equation systems: 0 * 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): 1 system {1} * Without analytic Jacobian (size): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0003684/1.868, allocations: 244 kB / 1.127 GB, free: 88 kB / 0.8106 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002934/1.869, allocations: 201.5 kB / 1.127 GB, free: 15.88 MB / 0.8262 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002761/1.871, allocations: 1.091 MB / 1.128 GB, free: 14.79 MB / 0.8262 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.074e-05/1.871, allocations: 11.94 kB / 1.128 GB, free: 14.77 MB / 0.8262 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.955e-06/1.871, allocations: 0 / 1.128 GB, free: 14.77 MB / 0.8262 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001919/1.873, allocations: 0.9216 MB / 1.129 GB, free: 13.82 MB / 0.8262 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 0.006386/1.88, allocations: 3.018 MB / 1.132 GB, free: 10.67 MB / 0.8262 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.981e-06/1.88, allocations: 4 kB / 1.132 GB, free: 10.67 MB / 0.8262 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.00103/1.881, allocations: 207.9 kB / 1.132 GB, free: 10.46 MB / 0.8262 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.047e-05/1.881, allocations: 8 kB / 1.132 GB, free: 10.46 MB / 0.8262 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.097e-05/1.881, allocations: 19.98 kB / 1.132 GB, free: 10.44 MB / 0.8262 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0003093/1.881, allocations: 0.5937 MB / 1.133 GB, free: 9.82 MB / 0.8262 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.318e-06/1.881, allocations: 8.016 kB / 1.133 GB, free: 9.812 MB / 0.8262 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003464/1.885, allocations: 1.659 MB / 1.135 GB, free: 8.117 MB / 0.8262 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0008829/1.886, allocations: 362.4 kB / 1.135 GB, free: 7.742 MB / 0.8262 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002156/1.886, allocations: 19.98 kB / 1.135 GB, free: 7.723 MB / 0.8262 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001194/1.887, allocations: 137.6 kB / 1.135 GB, free: 7.59 MB / 0.8262 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001141/1.887, allocations: 52.58 kB / 1.135 GB, free: 7.539 MB / 0.8262 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.742e-05/1.887, allocations: 31.98 kB / 1.135 GB, free: 7.508 MB / 0.8262 GB Notification: Performance of sorting global known variables: time 0.001819/1.889, allocations: 1.212 MB / 1.136 GB, free: 6.277 MB / 0.8262 GB Notification: Performance of sort global known variables: time 2.3e-07/1.889, allocations: 0 / 1.136 GB, free: 6.277 MB / 0.8262 GB Notification: Performance of remove unused functions: time 0.002814/1.892, allocations: 0.9702 MB / 1.137 GB, free: 5.305 MB / 0.8262 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 6 * 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 (78): * Single equations (assignments): 77 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 1 * Torn equation systems: 0 * 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): 1 system {1} * Without analytic Jacobian (size): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0009595/1.893, allocations: 350.7 kB / 1.138 GB, free: 4.957 MB / 0.8262 GB Notification: Performance of simCode: created initialization part: time 0.00383/1.897, allocations: 1.645 MB / 1.139 GB, free: 3.316 MB / 0.8262 GB Notification: Performance of simCode: created event and clocks part: time 4.038e-06/1.897, allocations: 0 / 1.139 GB, free: 3.316 MB / 0.8262 GB Notification: Performance of simCode: created simulation system equations: time 0.001059/1.898, allocations: 476.1 kB / 1.14 GB, free: 2.852 MB / 0.8262 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004645/1.902, allocations: 1.02 MB / 1.141 GB, free: 1.844 MB / 0.8262 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0068/1.909, allocations: 4.252 MB / 1.145 GB, free: 13.54 MB / 0.8419 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001362/1.911, allocations: 1.578 MB / 1.146 GB, free: 11.93 MB / 0.8419 GB Notification: Performance of simCode: alias equations: time 0.002597/1.913, allocations: 484.6 kB / 1.147 GB, free: 11.45 MB / 0.8419 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004409/1.914, allocations: 151.4 kB / 1.147 GB, free: 11.3 MB / 0.8419 GB Notification: Performance of SimCode: time 1.143e-06/1.914, allocations: 0 / 1.147 GB, free: 11.3 MB / 0.8419 GB Notification: Performance of Templates: time 0.06877/1.982, allocations: 37.32 MB / 1.183 GB, free: 6.531 MB / 0.8731 GB make -j1 -f Buildings_maint.7.0.x_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow.makefile (rm -f Buildings_maint.7.0.x_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow.pipe >> ../files/Buildings_maint.7.0.x_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow.sim & ./Buildings_maint.7.0.x_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.7.0.x_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow.pipe 2>&1)