Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint.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) 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(Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint") translateModel(Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0008514/0.0008514, allocations: 98.03 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 0.006696/0.006696, allocations: 168.9 kB / 16.26 MB, free: 6.656 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.572/1.572, allocations: 205.4 MB / 222.4 MB, free: 5.57 MB / 174.1 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 0.0005339/0.0005342, allocations: 8 kB / 279.4 MB, free: 12.51 MB / 238.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2717/0.2723, allocations: 47.59 MB / 327 MB, free: 1.422 MB / 254.1 MB Notification: Performance of NFInst.instantiate(Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint): time 0.07847/0.3508, allocations: 83.76 MB / 410.8 MB, free: 15.31 MB / 350.1 MB Notification: Performance of NFInst.instExpressions: time 0.03854/0.3894, allocations: 17.26 MB / 428.1 MB, free: 13.99 MB / 366.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.01945/0.4089, allocations: 386.9 kB / 428.4 MB, free: 13.61 MB / 366.1 MB Notification: Performance of NFTyping.typeComponents: time 0.002943/0.4118, allocations: 0.6839 MB / 429.1 MB, free: 12.92 MB / 366.1 MB Notification: Performance of NFTyping.typeBindings: time 0.007696/0.4196, allocations: 2.515 MB / 431.6 MB, free: 10.4 MB / 366.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.00307/0.4227, allocations: 1.229 MB / 432.9 MB, free: 9.168 MB / 366.1 MB Notification: Performance of NFFlatten.flatten: time 0.0119/0.4346, allocations: 10.21 MB / 443.1 MB, free: 14.93 MB / 382.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.01698/0.4516, allocations: 11.08 MB / 454.2 MB, free: 3.723 MB / 382.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.004265/0.4559, allocations: 1.914 MB / 456.1 MB, free: 1.801 MB / 382.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.2786/0.7346, allocations: 3.075 MB / 459.1 MB, free: 9.445 MB / 382.1 MB Notification: Performance of NFPackage.collectConstants: time 0.001962/0.7366, allocations: 225.5 kB / 459.4 MB, free: 9.445 MB / 382.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.005072/0.7417, allocations: 1.682 MB / 461.1 MB, free: 9.445 MB / 382.1 MB Notification: Performance of NFScalarize.scalarize: time 0.004221/0.746, allocations: 2.927 MB / 464 MB, free: 9.445 MB / 382.1 MB Notification: Performance of NFVerifyModel.verify: time 0.005575/0.7516, allocations: 3.259 MB / 467.2 MB, free: 9.094 MB / 382.1 MB Notification: Performance of NFConvertDAE.convert: time 0.01562/0.7672, allocations: 11.47 MB / 478.7 MB, free: 7.52 MB / 382.1 MB Notification: Performance of FrontEnd - DAE generated: time 1.099e-05/0.7673, allocations: 6.438 kB / 478.7 MB, free: 7.52 MB / 382.1 MB Notification: Performance of FrontEnd: time 4.197e-06/0.7673, allocations: 2.25 kB / 478.7 MB, free: 7.52 MB / 382.1 MB Notification: Performance of Transformations before backend: time 0.000588/0.7679, allocations: 0 / 478.7 MB, free: 7.52 MB / 382.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 2401 * Number of variables: 2401 Notification: Performance of Generate backend data structure: time 0.02503/0.7929, allocations: 6.881 MB / 485.6 MB, free: 3.438 MB / 382.1 MB Notification: Performance of prepare preOptimizeDAE: time 5.746e-05/0.793, allocations: 7.688 kB / 485.6 MB, free: 3.438 MB / 382.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01072/0.8037, allocations: 2.405 MB / 488 MB, free: 2.281 MB / 382.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01072/0.8145, allocations: 4.355 MB / 492.4 MB, free: 0.8281 MB / 382.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0004873/0.815, allocations: 438.5 kB / 492.8 MB, free: 0.8164 MB / 382.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.003941/0.819, allocations: 0.6735 MB / 493.5 MB, free: 0.7734 MB / 382.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.04977/0.8687, allocations: 17.34 MB / 0.4988 GB, free: 12.55 MB / 398.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 0.0002697/0.8691, allocations: 55.06 kB / 0.4989 GB, free: 12.55 MB / 398.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.001422/0.8705, allocations: 271.3 kB / 0.4991 GB, free: 12.42 MB / 398.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.003927/0.8744, allocations: 2.59 MB / 0.5017 GB, free: 11.46 MB / 398.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.03459/0.9091, allocations: 14.61 MB / 0.5159 GB, free: 13.48 MB / 414.1 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 0.1026/1.012, allocations: 64.06 MB / 0.5785 GB, free: 12.58 MB / 478.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.02292/1.035, allocations: 7.456 MB / 0.5858 GB, free: 4.98 MB / 478.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.005849/1.041, allocations: 3.804 MB / 0.5895 GB, free: 1.172 MB / 478.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.02938/1.07, allocations: 16.62 MB / 0.6057 GB, free: 108 kB / 494.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.967e-05/1.07, allocations: 62.81 kB / 0.6058 GB, free: 36 kB / 494.1 MB Notification: Performance of pre-optimization done (n=262): time 8.255e-06/1.07, allocations: 4 kB / 0.6058 GB, free: 32 kB / 494.1 MB Notification: Performance of matching and sorting (n=278): time 0.3238/1.394, allocations: 27.56 MB / 0.6327 GB, free: 217.9 MB / 0.4981 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.00111/1.395, allocations: 1.61 MB / 0.6343 GB, free: 216.3 MB / 0.4981 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.009661/1.405, allocations: 5.883 MB / 0.64 GB, free: 214.2 MB / 0.4981 GB Notification: Performance of collectPreVariables (initialization): time 0.000784/1.406, allocations: 64.06 kB / 0.6401 GB, free: 214.1 MB / 0.4981 GB Notification: Performance of collectInitialEqns (initialization): time 0.002839/1.408, allocations: 4.853 MB / 0.6448 GB, free: 210.4 MB / 0.4981 GB Notification: Performance of collectInitialBindings (initialization): time 0.001337/1.41, allocations: 1.081 MB / 0.6459 GB, free: 209.6 MB / 0.4981 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0009065/1.411, allocations: 0.7776 MB / 0.6466 GB, free: 209.3 MB / 0.4981 GB Notification: Performance of setup shared object (initialization): time 4.361e-05/1.411, allocations: 301.1 kB / 0.6469 GB, free: 209 MB / 0.4981 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.004585/1.415, allocations: 3.418 MB / 0.6503 GB, free: 207.9 MB / 0.4981 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.007117/1.422, allocations: 8.867 MB / 0.6589 GB, free: 199.4 MB / 0.4981 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.01428/1.437, allocations: 13.27 MB / 0.6719 GB, free: 187 MB / 0.4981 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.0001688/1.437, allocations: 56 kB / 0.6719 GB, free: 186.9 MB / 0.4981 GB Notification: Performance of matching and sorting (n=1192) (initialization): time 0.03483/1.472, allocations: 14.9 MB / 0.6865 GB, free: 174.4 MB / 0.4981 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001284/1.472, allocations: 87.12 kB / 0.6866 GB, free: 174.3 MB / 0.4981 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.01678/1.489, allocations: 6.802 MB / 0.6932 GB, free: 167.6 MB / 0.4981 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.01317/1.502, allocations: 3.232 MB / 0.6964 GB, free: 164.3 MB / 0.4981 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.007238/1.509, allocations: 2.14 MB / 0.6985 GB, free: 162.2 MB / 0.4981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01622/1.526, allocations: 15.82 MB / 0.7139 GB, free: 145.6 MB / 0.4981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.008958/1.535, allocations: 0.589 MB / 0.7145 GB, free: 145 MB / 0.4981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001987/1.537, allocations: 0.5373 MB / 0.715 GB, free: 144.4 MB / 0.4981 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 875 * Number of states: 0 () * Number of discrete variables: 60 (freeMotionScalarInit.arrowColor[3],freeMotionScalarInit.arrowColor[2],freeMotionScalarInit.arrowColor[1],fixedTranslation.color[3],fixedTranslation.color[2],fixedTranslation.color[1],fixedRotation.color[3],fixedRotation.color[2],fixedRotation.color[1],world.gravityArrowColor[3],world.gravityArrowColor[2],world.gravityArrowColor[1],world.axisColor_x[3],world.axisColor_x[2],world.axisColor_x[1],world.groundColor[3],world.groundColor[2],world.groundColor[1],world.gravitySphereColor[3],world.gravitySphereColor[2],world.gravitySphereColor[1],springOfConstraint.color[3],springOfConstraint.color[2],springOfConstraint.color[1],springOfConstraint.massColor[3],springOfConstraint.massColor[2],springOfConstraint.massColor[1],springOfJoint.color[3],springOfJoint.color[2],springOfJoint.color[1],springOfJoint.massColor[3],springOfJoint.massColor[2],springOfJoint.massColor[1],bodyOfConstraint.color[3],bodyOfConstraint.color[2],bodyOfConstraint.color[1],bodyOfConstraint.body.sphereColor[3],bodyOfConstraint.body.sphereColor[2],bodyOfConstraint.body.sphereColor[1],bodyOfConstraint.frameTranslation.color[3],bodyOfConstraint.frameTranslation.color[2],bodyOfConstraint.frameTranslation.color[1],bodyOfJoint.color[3],bodyOfJoint.color[2],bodyOfJoint.color[1],bodyOfJoint.body.sphereColor[3],bodyOfJoint.body.sphereColor[2],bodyOfJoint.body.sphereColor[1],bodyOfJoint.frameTranslation.color[3],bodyOfJoint.frameTranslation.color[2],bodyOfJoint.frameTranslation.color[1],sensorConstraintRelative.arrowColor[3],sensorConstraintRelative.arrowColor[2],sensorConstraintRelative.arrowColor[1],constraint.sphereColor[3],constraint.sphereColor[2],constraint.sphereColor[1],joint.sphereColor[3],joint.sphereColor[2],joint.sphereColor[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (1128): * Single equations (assignments): 1112 * Array equations: 8 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 3 * Torn equation systems: 5 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 2 systems {(3,100.0%), (4,100.0%)} * Non-linear Jacobian (size): 1 system {4} * Without analytic Jacobian (size): 0 systems Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 5 systems {(3,3,100.0%), (3,3,100.0%), (2,1,100.0%), (2,1,100.0%), (2,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.008129/1.545, allocations: 3.243 MB / 0.7182 GB, free: 141.2 MB / 0.4981 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.001362/1.546, allocations: 0.5168 MB / 0.7187 GB, free: 140.6 MB / 0.4981 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01167/1.558, allocations: 6.578 MB / 0.7251 GB, free: 134 MB / 0.4981 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 0.009435/1.567, allocations: 5.663 MB / 0.7306 GB, free: 128.2 MB / 0.4981 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 0.009599/1.577, allocations: 5.492 MB / 0.736 GB, free: 122.6 MB / 0.4981 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.474e-05/1.577, allocations: 11.95 kB / 0.736 GB, free: 122.6 MB / 0.4981 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.03762/1.615, allocations: 17.48 MB / 0.7531 GB, free: 105 MB / 0.4981 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.099e-05/1.615, allocations: 8 kB / 0.7531 GB, free: 105 MB / 0.4981 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002634/1.617, allocations: 0.5036 MB / 0.7536 GB, free: 104.5 MB / 0.4981 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.005539/1.623, allocations: 1.85 MB / 0.7554 GB, free: 102.6 MB / 0.4981 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0006866/1.624, allocations: 71.97 kB / 0.7555 GB, free: 102.5 MB / 0.4981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.01044/1.634, allocations: 9.768 MB / 0.765 GB, free: 92.36 MB / 0.4981 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 0.0007949/1.635, allocations: 1.483 MB / 0.7664 GB, free: 90.74 MB / 0.4981 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01725/1.652, allocations: 9.835 MB / 0.776 GB, free: 80.7 MB / 0.4981 GB Notification: Performance of postOpt removeConstants (simulation): time 0.002025/1.654, allocations: 0.5722 MB / 0.7766 GB, free: 80.1 MB / 0.4981 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001843/1.656, allocations: 59.98 kB / 0.7767 GB, free: 80.04 MB / 0.4981 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.003694/1.66, allocations: 226 kB / 0.7769 GB, free: 79.82 MB / 0.4981 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000691/1.661, allocations: 193.5 kB / 0.7771 GB, free: 79.63 MB / 0.4981 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.000355/1.661, allocations: 96.44 kB / 0.7772 GB, free: 79.54 MB / 0.4981 GB Notification: Performance of sorting global known variables: time 0.007202/1.668, allocations: 3.664 MB / 0.7807 GB, free: 75.87 MB / 0.4981 GB Notification: Performance of sort global known variables: time 1.7e-07/1.668, allocations: 0 / 0.7807 GB, free: 75.87 MB / 0.4981 GB Notification: Performance of remove unused functions: time 0.01033/1.679, allocations: 1.71 MB / 0.7824 GB, free: 74.17 MB / 0.4981 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 43 * Number of states: 12 ($STATESET1.x[3],$STATESET1.x[2],$STATESET1.x[1],joint.w_rel[1],joint.w_rel[2],joint.w_rel[3],bodyOfConstraint.body.w_a[1],bodyOfConstraint.body.w_a[2],bodyOfConstraint.body.w_a[3],freeMotionScalarInit.derd[1].u,freeMotionScalarInit.derd[2].u,freeMotionScalarInit.derd[3].u) * 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 (233): * Single equations (assignments): 223 * Array equations: 4 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 4 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 3 systems {(2,100.0%), (3,100.0%), (4,100.0%)} * Non-linear Jacobian (size): 1 system {4} * Without analytic Jacobian (size): 0 systems Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(3,3,100.0%), (3,3,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.001327/1.68, allocations: 282.4 kB / 0.7827 GB, free: 73.9 MB / 0.4981 GB Notification: Performance of simCode: created initialization part: time 0.01542/1.695, allocations: 9.18 MB / 0.7916 GB, free: 64.64 MB / 0.4981 GB Notification: Performance of simCode: created event and clocks part: time 1.37e-05/1.695, allocations: 4 kB / 0.7916 GB, free: 64.64 MB / 0.4981 GB Notification: Performance of simCode: created simulation system equations: time 0.006561/1.702, allocations: 3.385 MB / 0.7949 GB, free: 61.15 MB / 0.4981 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.02044/1.722, allocations: 0.8128 MB / 0.7957 GB, free: 60.35 MB / 0.4981 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.04308/1.766, allocations: 18.83 MB / 0.8141 GB, free: 41.37 MB / 0.4981 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.01025/1.776, allocations: 4.873 MB / 0.8189 GB, free: 36.46 MB / 0.4981 GB Notification: Performance of simCode: alias equations: time 0.008876/1.785, allocations: 2.911 MB / 0.8217 GB, free: 33.55 MB / 0.4981 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001848/1.787, allocations: 371.4 kB / 0.8221 GB, free: 33.18 MB / 0.4981 GB Notification: Performance of SimCode: time 1.002e-06/1.787, allocations: 0 / 0.8221 GB, free: 33.18 MB / 0.4981 GB Notification: Performance of Templates: time 0.3499/2.137, allocations: 62.68 MB / 0.8833 GB, free: 186.6 MB / 0.4981 GB make -j1 -f Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint.makefile (rm -f Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint.pipe ; mkfifo Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint.pipe ; head -c 1048576 < Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint.pipe >> ../files/Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint.sim & ./Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint -abortSlowSimulation -alarm=480 -lv LOG_STATS > Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint.pipe 2>&1)