Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Modelica_4.0.0_Modelica.Fluid.Examples.HeatingSystem.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 4.0.0+maint.om/package.mo", uses=false) Using package Modelica with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+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(Modelica.Fluid.Examples.HeatingSystem,fileNamePrefix="Modelica_4_0_0_Modelica_Fluid_Examples_HeatingSystem",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Modelica.Fluid.Examples.HeatingSystem,fileNamePrefix="Modelica_4_0_0_Modelica_Fluid_Examples_HeatingSystem",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 0.001467/0.001467, allocations: 105.2 kB / 17.06 MB, free: 6.027 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.002349/0.002349, allocations: 195 kB / 17.99 MB, free: 5.109 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.299/1.299, allocations: 222.9 MB / 241.7 MB, free: 15.18 MB / 206.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001101/0.001101, allocations: 39.94 kB / 350.8 MB, free: 3.797 MB / 286.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.24/0.2411, allocations: 49.45 MB / 400.2 MB, free: 8.418 MB / 318.1 MB Notification: Performance of NFInst.instantiate(Modelica.Fluid.Examples.HeatingSystem): time 0.08718/0.3283, allocations: 90.09 MB / 490.3 MB, free: 14.42 MB / 414.1 MB Notification: Performance of NFInst.instExpressions: time 0.03219/0.3605, allocations: 21.32 MB / 0.4996 GB, free: 9.043 MB / 430.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.002871/0.3634, allocations: 91.44 kB / 0.4997 GB, free: 8.953 MB / 430.1 MB Notification: Performance of NFTyping.typeComponents: time 0.00317/0.3666, allocations: 0.9356 MB / 0.5006 GB, free: 8.012 MB / 430.1 MB Notification: Performance of NFTyping.typeBindings: time 0.00941/0.3761, allocations: 3.725 MB / 0.5043 GB, free: 4.27 MB / 430.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.01204/0.3882, allocations: 5.664 MB / 0.5098 GB, free: 14.61 MB / 446.1 MB Notification: Performance of NFFlatten.flatten: time 0.00825/0.3965, allocations: 7.038 MB / 0.5167 GB, free: 7.551 MB / 446.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.00311/0.3996, allocations: 1.844 MB / 0.5185 GB, free: 5.68 MB / 446.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.3688/0.7685, allocations: 74.95 MB / 0.5917 GB, free: 7.477 MB / 462.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.06842/0.8369, allocations: 31.92 MB / 0.6229 GB, free: 13.81 MB / 494.1 MB Notification: Performance of NFPackage.collectConstants: time 0.001257/0.8382, allocations: 248 kB / 0.6231 GB, free: 13.57 MB / 494.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.01647/0.8547, allocations: 6.084 MB / 0.629 GB, free: 8.801 MB / 494.1 MB Notification: Performance of NFScalarize.scalarize: time 0.002079/0.8568, allocations: 1.087 MB / 0.6301 GB, free: 8.148 MB / 494.1 MB Notification: Performance of NFVerifyModel.verify: time 0.003996/0.8608, allocations: 1.5 MB / 0.6316 GB, free: 7.367 MB / 494.1 MB Notification: Performance of NFConvertDAE.convert: time 0.00995/0.8708, allocations: 5.518 MB / 0.6369 GB, free: 3.219 MB / 494.1 MB Notification: Performance of FrontEnd - DAE generated: time 7.014e-06/0.8708, allocations: 3.625 kB / 0.637 GB, free: 3.219 MB / 494.1 MB Notification: Performance of FrontEnd: time 1.794e-06/0.8709, allocations: 4 kB / 0.637 GB, free: 3.215 MB / 494.1 MB Notification: Performance of Transformations before backend: time 0.0001585/0.871, allocations: 0 / 0.637 GB, free: 3.215 MB / 494.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 538 * Number of variables: 538 Notification: Performance of Generate backend data structure: time 0.01042/0.8814, allocations: 3.499 MB / 0.6404 GB, free: 104 kB / 494.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.489e-05/0.8815, allocations: 8.031 kB / 0.6404 GB, free: 96 kB / 494.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0009888/0.8825, allocations: 341.5 kB / 0.6407 GB, free: 15.88 MB / 0.4981 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0014/0.8839, allocations: 312.6 kB / 0.641 GB, free: 15.57 MB / 0.4981 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003339/0.8873, allocations: 1.676 MB / 0.6426 GB, free: 14.23 MB / 0.4981 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002241/0.8875, allocations: 217.3 kB / 0.6428 GB, free: 14.07 MB / 0.4981 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0004521/0.888, allocations: 203.3 kB / 0.643 GB, free: 13.91 MB / 0.4981 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.004778/0.8928, allocations: 3.315 MB / 0.6463 GB, free: 10.51 MB / 0.4981 GB Notification: Performance of preOpt findStateOrder (simulation): time 4.326e-05/0.8928, allocations: 3.562 kB / 0.6463 GB, free: 10.51 MB / 0.4981 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0002229/0.893, allocations: 86.98 kB / 0.6464 GB, free: 10.44 MB / 0.4981 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0002965/0.8933, allocations: 259.2 kB / 0.6466 GB, free: 10.19 MB / 0.4981 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.004854/0.8982, allocations: 3.107 MB / 0.6496 GB, free: 7.105 MB / 0.4981 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 0.0174/0.9156, allocations: 13.8 MB / 0.6631 GB, free: 8.609 MB / 0.5137 GB Notification: Performance of preOpt comSubExp (simulation): time 0.003848/0.9195, allocations: 2.229 MB / 0.6653 GB, free: 6.398 MB / 0.5137 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.002/0.9215, allocations: 1.368 MB / 0.6666 GB, free: 5.027 MB / 0.5137 GB Notification: Performance of preOpt evalFunc (simulation): time 0.007699/0.9292, allocations: 5.851 MB / 0.6723 GB, free: 14.7 MB / 0.5294 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.735e-05/0.9293, allocations: 56.56 kB / 0.6724 GB, free: 14.64 MB / 0.5294 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.0005974/0.9299, allocations: 170 kB / 0.6726 GB, free: 14.47 MB / 0.5294 GB Notification: Performance of pre-optimization done (n=171): time 3.125e-06/0.9299, allocations: 0 / 0.6726 GB, free: 14.47 MB / 0.5294 GB Notification: Performance of matching and sorting (n=197): time 0.02081/0.9507, allocations: 9.153 MB / 0.6815 GB, free: 5.254 MB / 0.5294 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.802e-05/0.9508, allocations: 77.39 kB / 0.6816 GB, free: 5.168 MB / 0.5294 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.00254/0.9533, allocations: 1.845 MB / 0.6834 GB, free: 3.281 MB / 0.5294 GB Notification: Performance of collectPreVariables (initialization): time 0.0001741/0.9535, allocations: 61.7 kB / 0.6834 GB, free: 3.215 MB / 0.5294 GB Notification: Performance of collectInitialEqns (initialization): time 0.000741/0.9543, allocations: 1.061 MB / 0.6845 GB, free: 2.145 MB / 0.5294 GB Notification: Performance of collectInitialBindings (initialization): time 0.0005245/0.9548, allocations: 0.681 MB / 0.6851 GB, free: 1.469 MB / 0.5294 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0006922/0.9555, allocations: 456.3 kB / 0.6856 GB, free: 1.016 MB / 0.5294 GB Notification: Performance of setup shared object (initialization): time 8.552e-05/0.9556, allocations: 301.1 kB / 0.6859 GB, free: 0.7188 MB / 0.5294 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001911/0.9575, allocations: 1.239 MB / 0.6871 GB, free: 15.47 MB / 0.545 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002189/0.9597, allocations: 1.798 MB / 0.6888 GB, free: 13.44 MB / 0.545 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.004124/0.9639, allocations: 3.16 MB / 0.6919 GB, free: 10.11 MB / 0.545 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.127e-05/0.9639, allocations: 15.78 kB / 0.6919 GB, free: 10.1 MB / 0.545 GB Notification: Performance of matching and sorting (n=299) (initialization): time 0.006617/0.9705, allocations: 4.291 MB / 0.6961 GB, free: 5.898 MB / 0.545 GB Notification: Performance of prepare postOptimizeDAE: time 2.691e-05/0.9705, allocations: 12 kB / 0.6961 GB, free: 5.887 MB / 0.545 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.527e-05/0.9706, allocations: 16 kB / 0.6961 GB, free: 5.871 MB / 0.545 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.01356/0.9841, allocations: 3.64 MB / 0.6997 GB, free: 2.242 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001268/0.9854, allocations: 328.8 kB / 0.7 GB, free: 1.945 MB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.00645/0.9919, allocations: 3.955 MB / 0.7039 GB, free: 14 MB / 0.5606 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002055/0.994, allocations: 95.94 kB / 0.704 GB, free: 13.91 MB / 0.5606 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003207/0.9943, allocations: 112 kB / 0.7041 GB, free: 13.8 MB / 0.5606 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.002907/0.9972, allocations: 1.676 MB / 0.7057 GB, free: 12.11 MB / 0.5606 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.002298/0.9996, allocations: 1.748 MB / 0.7074 GB, free: 10.12 MB / 0.5606 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.00432/1.004, allocations: 3.052 MB / 0.7104 GB, free: 6.898 MB / 0.5606 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.884e-05/1.004, allocations: 4 kB / 0.7104 GB, free: 6.895 MB / 0.5606 GB Notification: Performance of matching and sorting (n=299) (initialization_lambda0): time 0.006706/1.011, allocations: 4.028 MB / 0.7143 GB, free: 2.961 MB / 0.5606 GB Notification: Performance of prepare postOptimizeDAE: time 2.151e-05/1.011, allocations: 15.94 kB / 0.7144 GB, free: 2.945 MB / 0.5606 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.284e-05/1.011, allocations: 20 kB / 0.7144 GB, free: 2.926 MB / 0.5606 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.00938/1.02, allocations: 2.746 MB / 0.7171 GB, free: 188 kB / 0.5606 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001566/1.022, allocations: 377 kB / 0.7174 GB, free: 15.84 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.005545/1.027, allocations: 3.461 MB / 0.7208 GB, free: 12.38 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002041/1.029, allocations: 91.94 kB / 0.7209 GB, free: 12.29 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003455/1.03, allocations: 115.9 kB / 0.721 GB, free: 12.18 MB / 0.5762 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 78 * Number of states: 0 () * Number of discrete variables: 4 (tank.inFlow[2],tank.inFlow[1],tank.regularFlow[2],tank.regularFlow[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (175): * Single equations (assignments): 174 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(18,107)} Notification: Performance of prepare postOptimizeDAE: time 0.0007132/1.03, allocations: 323.4 kB / 0.7213 GB, free: 11.88 MB / 0.5762 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0006977/1.031, allocations: 229.3 kB / 0.7215 GB, free: 11.65 MB / 0.5762 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.007992/1.039, allocations: 3.938 MB / 0.7254 GB, free: 7.711 MB / 0.5762 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.399e-05/1.039, allocations: 24 kB / 0.7254 GB, free: 7.688 MB / 0.5762 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.897e-05/1.039, allocations: 4 kB / 0.7254 GB, free: 7.684 MB / 0.5762 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.006038/1.045, allocations: 3.374 MB / 0.7287 GB, free: 4.23 MB / 0.5762 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01054/1.056, allocations: 6.294 MB / 0.7348 GB, free: 13.91 MB / 0.5919 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 9.788e-06/1.056, allocations: 3.984 kB / 0.7348 GB, free: 13.91 MB / 0.5919 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001401/1.057, allocations: 312.4 kB / 0.7351 GB, free: 13.62 MB / 0.5919 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.003976/1.061, allocations: 1.167 MB / 0.7363 GB, free: 12.43 MB / 0.5919 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0002199/1.062, allocations: 71.95 kB / 0.7363 GB, free: 12.36 MB / 0.5919 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.008853/1.07, allocations: 11.07 MB / 0.7472 GB, free: 0.5781 MB / 0.5919 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.674e-06/1.07, allocations: 0 / 0.7472 GB, free: 0.5781 MB / 0.5919 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.223/1.293, allocations: 5.183 MB / 0.7522 GB, free: 160.8 MB / 0.5919 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001184/1.295, allocations: 0.5926 MB / 0.7528 GB, free: 160.7 MB / 0.5919 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0004157/1.295, allocations: 53.27 kB / 0.7528 GB, free: 160.7 MB / 0.5919 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001319/1.296, allocations: 73.48 kB / 0.7529 GB, free: 160.7 MB / 0.5919 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0003299/1.297, allocations: 168.1 kB / 0.7531 GB, free: 160.7 MB / 0.5919 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001592/1.297, allocations: 83.48 kB / 0.7532 GB, free: 160.7 MB / 0.5919 GB Notification: Performance of sorting global known variables: time 0.001379/1.298, allocations: 1.261 MB / 0.7544 GB, free: 160.6 MB / 0.5919 GB Notification: Performance of sort global known variables: time 1.3e-07/1.298, allocations: 0 / 0.7544 GB, free: 160.6 MB / 0.5919 GB Notification: Performance of remove unused functions: time 0.003438/1.302, allocations: 1.73 MB / 0.7561 GB, free: 160.6 MB / 0.5919 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 10 (tank.level,tank.medium.T,heater.mediums[1].p,heater.mediums[1].T,radiator.mediums[1].p,radiator.mediums[1].T,pipe.mediums[1].p,pipe.mediums[1].T,pipe.mediums[2].p,pipe.mediums[2].T) * Number of discrete variables: 4 (tank.regularFlow[1],tank.regularFlow[2],tank.inFlow[1],tank.inFlow[2]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (182): * Single equations (assignments): 168 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 6 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 8 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 5 systems {(1,2,100.0%), (1,2,100.0%), (1,2,100.0%), (1,2,100.0%), (1,6,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 3 systems {(1,9), (2,8), (5,17)} Notification: Performance of Backend phase and start with SimCode phase: time 0.008943/1.311, allocations: 6.645 MB / 0.7626 GB, free: 159.8 MB / 0.5919 GB Notification: Performance of simCode: created initialization part: time 0.009178/1.32, allocations: 5.121 MB / 0.7676 GB, free: 159.7 MB / 0.5919 GB Notification: Performance of simCode: created event and clocks part: time 6.172e-06/1.32, allocations: 0 / 0.7676 GB, free: 159.7 MB / 0.5919 GB Notification: Performance of simCode: created simulation system equations: time 0.0035/1.323, allocations: 2.242 MB / 0.7698 GB, free: 159.1 MB / 0.5919 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004145/1.328, allocations: 1.047 MB / 0.7708 GB, free: 159 MB / 0.5919 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.03184/1.359, allocations: 24.17 MB / 0.7944 GB, free: 153.8 MB / 0.5919 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001132/1.361, allocations: 1.879 MB / 0.7962 GB, free: 152.4 MB / 0.5919 GB Notification: Performance of simCode: alias equations: time 0.002627/1.363, allocations: 0.9508 MB / 0.7971 GB, free: 151.7 MB / 0.5919 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.00122/1.364, allocations: 1.006 MB / 0.7981 GB, free: 151.5 MB / 0.5919 GB Notification: Performance of SimCode: time 1.392e-06/1.364, allocations: 0 / 0.7981 GB, free: 151.5 MB / 0.5919 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.1272/1.492, allocations: 100.8 MB / 0.8965 GB, free: 55.21 MB / 0.5919 GB Notification: Performance of buildModelFMU: Generate platform static: time 16.43/17.92, allocations: 2.344 kB / 0.8965 GB, free: 55.21 MB / 0.5919 GB (rm -f Modelica_4.0.0_Modelica.Fluid.Examples.HeatingSystem.pipe ; mkfifo Modelica_4.0.0_Modelica.Fluid.Examples.HeatingSystem.pipe ; head -c 1048576 < Modelica_4.0.0_Modelica.Fluid.Examples.HeatingSystem.pipe >> ../files/Modelica_4.0.0_Modelica.Fluid.Examples.HeatingSystem.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Modelica_4.0.0_Modelica.Fluid.Examples.HeatingSystem_res.mat --tempDir=temp_Modelica_4_0_0_Modelica_Fluid_Examples_HeatingSystem_fmu --startTime=0 --stopTime=6000 --timeout=50 --tolerance=1e-06 Modelica_4_0_0_Modelica_Fluid_Examples_HeatingSystem.fmu > Modelica_4.0.0_Modelica.Fluid.Examples.HeatingSystem.pipe 2>&1) TODO: How the !@#!# did the simulation report success but simulation result Modelica_4.0.0_Modelica.Fluid.Examples.HeatingSystem_res.mat does not exist to compare? outputFormat=mat