Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8.0.0_Buildings.Fluid.Examples.FlowSystem.Simplified3.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.0/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+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/ModelicaServices 3.2.3+maint.om/package.mo", uses=false) Using package ModelicaServices with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+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 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo) Using package Buildings with version 8.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.0/package.mo) Running command: "" <> buildModelFMU(Buildings.Fluid.Examples.FlowSystem.Simplified3,fileNamePrefix="Buildings_8_0_0_Buildings_Fluid_Examples_FlowSystem_Simplified3",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.Examples.FlowSystem.Simplified3,fileNamePrefix="Buildings_8_0_0_Buildings_Fluid_Examples_FlowSystem_Simplified3",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.0/package.mo): time 2.833/2.833, allocations: 284.9 MB / 292.4 MB, free: 10.54 MB / 234.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.00147/0.00147, allocations: 176.9 kB / 360.6 MB, free: 7.277 MB / 298.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 2.059/2.059, allocations: 205.3 MB / 0.6191 GB, free: 12.17 MB / 474.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.000995/0.0009944, allocations: 87.31 kB / 0.7321 GB, free: 44.7 MB / 0.5105 GB Notification: Performance of FrontEnd - loaded program: time 3.267e-05/3.289e-05, allocations: 4 kB / 0.8509 GB, free: 3.312 MB / 0.5886 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.8139/0.814, allocations: 115.3 MB / 0.9634 GB, free: 78.66 MB / 0.6667 GB Notification: Performance of FrontEnd - scodeFlatten: time 1.345/2.159, allocations: 463.4 MB / 1.416 GB, free: 106 MB / 0.8542 GB Notification: Performance of FrontEnd - mkProgramGraph: time 0.0002825/2.16, allocations: 92.59 kB / 1.416 GB, free: 105.9 MB / 0.8542 GB Notification: Performance of FrontEnd - DAE generated: time 53.04/55.2, allocations: 9.442 GB / 10.86 GB, free: 13.89 MB / 1.198 GB Notification: Performance of FrontEnd: time 3.526e-06/55.2, allocations: 0 / 10.86 GB, free: 13.89 MB / 1.198 GB Notification: Performance of Transformations before backend: time 0.005019/55.2, allocations: 0.5146 MB / 10.86 GB, free: 13.38 MB / 1.198 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 2061 * Number of variables: 2061 Notification: Performance of Generate backend data structure: time 0.07208/55.27, allocations: 14.15 MB / 10.87 GB, free: 15.11 MB / 1.214 GB Notification: Performance of prepare preOptimizeDAE: time 6.207e-05/55.27, allocations: 12.03 kB / 10.87 GB, free: 15.09 MB / 1.214 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.02058/55.29, allocations: 2.3 MB / 10.87 GB, free: 12.77 MB / 1.214 GB Notification: Performance of preOpt evaluateParameters (simulation): time 2.457/57.75, allocations: 23.23 MB / 10.9 GB, free: 66.83 MB / 1.214 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0008231/57.75, allocations: 259.6 kB / 10.9 GB, free: 66.83 MB / 1.214 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.006484/57.76, allocations: 0.5782 MB / 10.9 GB, free: 66.83 MB / 1.214 GB Notification: Performance of preOpt removeEqualFunctionCalls (simulation): time 0.0507/57.81, allocations: 19.65 MB / 10.92 GB, free: 66.79 MB / 1.214 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.05539/57.86, allocations: 15.39 MB / 10.93 GB, free: 64.98 MB / 1.214 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0007163/57.87, allocations: 18.22 kB / 10.93 GB, free: 64.98 MB / 1.214 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.005025/57.87, allocations: 16.62 kB / 10.93 GB, free: 64.98 MB / 1.214 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0003566/57.87, allocations: 217.3 kB / 10.93 GB, free: 64.98 MB / 1.214 GB Warning: The model contains alias variables with conflicting start and/or 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 0.2153/58.09, allocations: 78.35 MB / 11.01 GB, free: 31.32 MB / 1.214 GB Notification: Performance of preOpt comSubExp (simulation): time 0.04118/58.13, allocations: 12.14 MB / 11.02 GB, free: 30.9 MB / 1.214 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.03185/58.16, allocations: 9.583 MB / 11.03 GB, free: 30.82 MB / 1.214 GB Warning: The model contains alias variables with conflicting start and/or 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 evalFunc (simulation): time 0.1217/58.28, allocations: 32.79 MB / 11.06 GB, free: 38.03 MB / 1.229 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.02337/58.3, allocations: 8.874 MB / 11.07 GB, free: 37.88 MB / 1.229 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.083/58.39, allocations: 14.96 MB / 11.09 GB, free: 37.57 MB / 1.229 GB Notification: Performance of pre-optimization done (n=561): time 5.92e-05/58.39, allocations: 0 / 11.09 GB, free: 37.57 MB / 1.229 GB Notification: Performance of matching and sorting (n=563): time 1.404/59.79, allocations: 138.4 MB / 11.22 GB, free: 33.03 MB / 1.229 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.001306/59.79, allocations: 2.508 MB / 11.22 GB, free: 30.02 MB / 1.229 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.04297/59.84, allocations: 13.88 MB / 11.24 GB, free: 29.18 MB / 1.229 GB Notification: Performance of collectPreVariables (initialization): time 0.004594/59.84, allocations: 43.45 kB / 11.24 GB, free: 29.15 MB / 1.229 GB Notification: Performance of collectInitialEqns (initialization): time 0.0146/59.86, allocations: 7.927 MB / 11.24 GB, free: 27.31 MB / 1.229 GB Notification: Performance of collectInitialBindings (initialization): time 0.005915/59.86, allocations: 1.928 MB / 11.25 GB, free: 26.03 MB / 1.229 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.00408/59.87, allocations: 7.938 kB / 11.25 GB, free: 26.02 MB / 1.229 GB Notification: Performance of setup shared object (initialization): time 0.0012/59.87, allocations: 0.6792 MB / 11.25 GB, free: 25.7 MB / 1.229 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.02093/59.89, allocations: 8.337 MB / 11.25 GB, free: 25.67 MB / 1.229 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.03163/59.92, allocations: 11.79 MB / 11.27 GB, free: 21.7 MB / 1.229 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0299/59.95, allocations: 9.791 MB / 11.28 GB, free: 21.47 MB / 1.229 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.000127/59.95, allocations: 17.31 kB / 11.28 GB, free: 21.47 MB / 1.229 GB Notification: Performance of matching and sorting (n=1185) (initialization): time 3.693/63.64, allocations: 124.6 MB / 11.4 GB, free: 89.86 MB / 1.245 GB Notification: Performance of prepare postOptimizeDAE: time 0.009976/63.65, allocations: 38.13 MB / 11.43 GB, free: 67.05 MB / 1.261 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0006518/63.65, allocations: 119.5 kB / 11.44 GB, free: 67.05 MB / 1.261 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.418/65.07, allocations: 143.2 MB / 11.57 GB, free: 66.41 MB / 1.261 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.02215/65.09, allocations: 2.132 MB / 11.58 GB, free: 66.41 MB / 1.261 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.2717/65.37, allocations: 65.58 MB / 11.64 GB, free: 61.32 MB / 1.261 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.03198/65.4, allocations: 0.9602 MB / 11.64 GB, free: 61.27 MB / 1.261 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.006839/65.4, allocations: 0.837 MB / 11.64 GB, free: 61.27 MB / 1.261 GB Notification: Performance of prepare postOptimizeDAE: time 2.283e-05/65.4, allocations: 5.328 kB / 11.64 GB, free: 61.27 MB / 1.261 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 1.349/66.75, allocations: 121.5 MB / 11.76 GB, free: 15.69 MB / 1.261 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0006187/66.75, allocations: 115.9 kB / 11.76 GB, free: 15.58 MB / 1.261 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.623/69.38, allocations: 143.3 MB / 11.9 GB, free: 144 MB / 1.308 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.01871/69.4, allocations: 2.117 MB / 11.9 GB, free: 144 MB / 1.308 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.306/69.7, allocations: 68.64 MB / 11.97 GB, free: 140.7 MB / 1.308 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.03082/69.73, allocations: 0.9281 MB / 11.97 GB, free: 140.7 MB / 1.308 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.005401/69.74, allocations: 0.7884 MB / 11.97 GB, free: 140.7 MB / 1.308 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 241 * Number of states: 0 () * Number of discrete variables: 10 ($whenCondition1,$whenCondition2,booleanToInteger.u,booleanToInteger.y,$PRE.stepPump.pulseStart,stepPump.pulseStart,$PRE.stepValve.T_start,stepValve.T_start,$PRE.stepValve.count,stepValve.count) * Number of discrete states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (945): * Single equations (assignments): 869 * Array equations: 36 * Algorithm blocks: 1 * Record equations: 32 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 5 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 5 {1,1,1,1,1} * Without analytic Jacobian: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 1 {(28,89.3%) 28} * Non-linear torn systems: 1 {5 80} Notification: Performance of prepare postOptimizeDAE: time 0.008643/69.75, allocations: 357.4 kB / 11.97 GB, free: 140.5 MB / 1.308 GB Notification: Performance of postOpt createAliasVarsForOutputStates (simulation): time 1.288/71.04, allocations: 118.3 MB / 12.09 GB, free: 139.3 MB / 1.308 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0101/71.05, allocations: 1.469 MB / 12.09 GB, free: 139.3 MB / 1.308 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.3943/71.44, allocations: 43.21 MB / 12.13 GB, free: 138.3 MB / 1.308 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 0.0001703/71.44, allocations: 64.81 kB / 12.13 GB, free: 138.3 MB / 1.308 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 0.0001229/71.44, allocations: 30.75 kB / 12.13 GB, free: 138.3 MB / 1.308 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.3135/71.75, allocations: 38.11 MB / 12.17 GB, free: 136.2 MB / 1.308 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.4237/72.18, allocations: 56.98 MB / 12.22 GB, free: 92.4 MB / 1.308 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 0.0001115/72.18, allocations: 4 kB / 12.22 GB, free: 92.39 MB / 1.308 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.01631/72.19, allocations: 1.107 MB / 12.23 GB, free: 91.37 MB / 1.308 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.3452/72.54, allocations: 40.46 MB / 12.27 GB, free: 51.77 MB / 1.308 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.002565/72.54, allocations: 150.3 kB / 12.27 GB, free: 51.66 MB / 1.308 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.1033/72.65, allocations: 25.89 MB / 12.29 GB, free: 34.19 MB / 1.308 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.03e-05/72.65, allocations: 3.953 kB / 12.29 GB, free: 34.18 MB / 1.308 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 1.578/74.22, allocations: 48.56 MB / 12.34 GB, free: 151.1 MB / 1.308 GB Notification: Performance of postOpt removeConstants (simulation): time 0.01689/74.24, allocations: 3.153 MB / 12.34 GB, free: 151 MB / 1.308 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.008785/74.25, allocations: 82.72 kB / 12.34 GB, free: 151 MB / 1.308 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.02478/74.27, allocations: 0.7554 MB / 12.34 GB, free: 151 MB / 1.308 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.003834/74.28, allocations: 412 kB / 12.34 GB, free: 151 MB / 1.308 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.002798/74.28, allocations: 253.8 kB / 12.34 GB, free: 151 MB / 1.308 GB Notification: Performance of sorting global known variables: time 0.03585/74.32, allocations: 10.4 MB / 12.35 GB, free: 150.6 MB / 1.308 GB Notification: Performance of sort global known variables: time 7.92e-07/74.32, allocations: 0 / 12.35 GB, free: 150.6 MB / 1.308 GB Notification: Performance of remove unused functions: time 0.08246/74.4, allocations: 7.873 MB / 12.36 GB, free: 150.6 MB / 1.308 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * Number of states: 74 (pmpSouth.vol.dynBal.U,pmpSouth.filter.x[1],pmpSouth.filter.x[2],pmpNorth.vol.dynBal.U,pmpNorth.filter.x[1],pmpNorth.filter.x[2],valSouth1[1].filter.x[1],valSouth1[1].filter.x[2],valSouth1[2].filter.x[1],valSouth1[2].filter.x[2],valSouth1[3].filter.x[1],valSouth1[3].filter.x[2],valSouth1[4].filter.x[1],valSouth1[4].filter.x[2],valSouth2[1].filter.x[1],valSouth2[1].filter.x[2],valSouth2[2].filter.x[1],valSouth2[2].filter.x[2],valSouth2[3].filter.x[1],valSouth2[3].filter.x[2],valSouth2[4].filter.x[1],valSouth2[4].filter.x[2],valSouth2[5].filter.x[1],valSouth2[5].filter.x[2],valSouth2[6].filter.x[1],valSouth2[6].filter.x[2],valSouth2[7].filter.x[1],valSouth2[7].filter.x[2],valSouth2[8].filter.x[1],valSouth2[8].filter.x[2],valNorth1[1].filter.x[1],valNorth1[1].filter.x[2],valNorth1[2].filter.x[1],valNorth1[2].filter.x[2],valNorth1[3].filter.x[1],valNorth1[3].filter.x[2],valNorth1[4].filter.x[1],valNorth1[4].filter.x[2],valNorth2[1].filter.x[1],valNorth2[1].filter.x[2],valNorth2[2].filter.x[1],valNorth2[2].filter.x[2],valNorth2[3].filter.x[1],valNorth2[3].filter.x[2],valNorth2[4].filter.x[1],valNorth2[4].filter.x[2],valNorth2[5].filter.x[1],valNorth2[5].filter.x[2],valNorth2[6].filter.x[1],valNorth2[6].filter.x[2],valNorth2[7].filter.x[1],valNorth2[7].filter.x[2],valNorth2[8].filter.x[1],valNorth2[8].filter.x[2],valSouth.vol.dynBal.U,valSouth.filter.x[1],valSouth.filter.x[2],valNorth.vol.dynBal.U,valNorth.filter.x[1],valNorth.filter.x[2],spl.vol.dynBal.U,spl1.vol.dynBal.U,pumpHea.vol.dynBal.U,pumpHea.filter.x[1],pumpHea.filter.x[2],valHea.filter.x[1],valHea.filter.x[2],valCoo.filter.x[1],valCoo.filter.x[2],spl2.vol.dynBal.U,spl3.vol.dynBal.U,pumpCoo.vol.dynBal.U,pumpCoo.filter.x[1],pumpCoo.filter.x[2]) * Number of discrete variables: 7 ($whenCondition2,$whenCondition1,booleanToInteger.u,booleanToInteger.y,stepPump.pulseStart,stepValve.T_start,stepValve.count) * Number of discrete states: 1 (stepValve.count) * Top-level inputs: 0 Notification: Strong component statistics for simulation (519): * Single equations (assignments): 499 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 10 * When equations: 3 * If-equations: 0 * Equation systems (linear and non-linear blocks): 5 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 5 {1,1,1,1,1} * Without analytic Jacobian: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 1 {(28,89.3%) 28} * Non-linear torn systems: 1 {5 80} Notification: Performance of Backend phase and start with SimCode phase: time 0.3548/74.75, allocations: 53.72 MB / 12.41 GB, free: 146.7 MB / 1.308 GB Notification: Performance of simCode: created initialization part: time 0.1158/74.87, allocations: 35.19 MB / 12.45 GB, free: 143.6 MB / 1.308 GB Notification: Performance of simCode: created event and clocks part: time 2.883e-05/74.87, allocations: 14.28 kB / 12.45 GB, free: 143.6 MB / 1.308 GB Notification: Performance of simCode: created simulation system equations: time 0.02799/74.9, allocations: 8.174 MB / 12.46 GB, free: 143.3 MB / 1.308 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.06563/74.96, allocations: 7.427 MB / 12.46 GB, free: 143.2 MB / 1.308 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.1115/75.08, allocations: 30.08 MB / 12.49 GB, free: 137.5 MB / 1.308 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.02247/75.1, allocations: 8.946 MB / 12.5 GB, free: 136.3 MB / 1.308 GB Notification: Performance of simCode: alias equations: time 0.06182/75.16, allocations: 8.272 MB / 12.51 GB, free: 136.2 MB / 1.308 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.02103/75.18, allocations: 7.367 MB / 12.52 GB, free: 136.2 MB / 1.308 GB Notification: Performance of SimCode: time 2.635e-06/75.18, allocations: 0 / 12.52 GB, free: 136.2 MB / 1.308 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 2.505/77.69, allocations: 0.5506 GB / 13.07 GB, free: 93.59 MB / 1.308 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0002757/77.69, allocations: 173 kB / 13.07 GB, free: 93.4 MB / 1.308 GB Notification: Performance of buildModelFMU: Generate platform static: time 36.89/114.6, allocations: 0 / 13.07 GB, free: 93.4 MB / 1.308 GB (rm -f Buildings_8.0.0_Buildings.Fluid.Examples.FlowSystem.Simplified3.pipe ; mkfifo Buildings_8.0.0_Buildings.Fluid.Examples.FlowSystem.Simplified3.pipe ; head -c 1048576 < Buildings_8.0.0_Buildings.Fluid.Examples.FlowSystem.Simplified3.pipe >> ../files/Buildings_8.0.0_Buildings.Fluid.Examples.FlowSystem.Simplified3.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator --tempDir=temp_Buildings_8_0_0_Buildings_Fluid_Examples_FlowSystem_Simplified3_fmu --startTime=0 --stopTime=1000 --timeout=50 --tolerance=1e-06 Buildings_8_0_0_Buildings_Fluid_Examples_FlowSystem_Simplified3.fmu > Buildings_8.0.0_Buildings.Fluid.Examples.FlowSystem.Simplified3.pipe 2>&1)