Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_9_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.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) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.1-maint.9.1.x/package.mo", uses=false) Using package Buildings with version 9.1.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.1-maint.9.1.x/package.mo) 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(Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU,fileNamePrefix="Buildings_9_Buildings_Fluid_HeatExchangers_Validation_DryCoilEffectivenessNTU",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU,fileNamePrefix="Buildings_9_Buildings_Fluid_HeatExchangers_Validation_DryCoilEffectivenessNTU",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 0.001039/0.001039, allocations: 86.64 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 0.00134/0.001341, 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 4.0.0+maint.om/package.mo): time 1.361/1.361, allocations: 223.2 MB / 240 MB, free: 5.43 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.1-maint.9.1.x/package.mo): time 2.449/2.449, allocations: 390.4 MB / 0.6655 GB, free: 2.945 MB / 0.5137 GB Notification: Performance of FrontEnd - loaded program: time 0.0003674/0.0003675, allocations: 12 kB / 0.8149 GB, free: 14.16 MB / 0.67 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.7406/0.741, allocations: 142.3 MB / 0.9539 GB, free: 8.117 MB / 0.7169 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU): time 0.9878/1.729, allocations: 325.7 MB / 1.272 GB, free: 13.03 MB / 0.9981 GB Notification: Performance of NFInst.instExpressions: time 0.04291/1.772, allocations: 29.95 MB / 1.301 GB, free: 12.57 MB / 0.9981 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.008623/1.781, allocations: 143.1 kB / 1.301 GB, free: 12.57 MB / 0.9981 GB Notification: Performance of NFTyping.typeComponents: time 0.008061/1.789, allocations: 1.822 MB / 1.303 GB, free: 12.54 MB / 0.9981 GB Notification: Performance of NFTyping.typeBindings: time 0.02118/1.81, allocations: 6.097 MB / 1.309 GB, free: 12.29 MB / 0.9981 GB Notification: Performance of NFTyping.typeClassSections: time 0.009222/1.819, allocations: 3.027 MB / 1.312 GB, free: 12.13 MB / 0.9981 GB Notification: Performance of NFFlatten.flatten: time 0.01964/1.839, allocations: 13.96 MB / 1.326 GB, free: 12.11 MB / 0.9981 GB Notification: Performance of NFFlatten.resolveConnections: time 0.008224/1.847, allocations: 3.345 MB / 1.329 GB, free: 27.72 MB / 1.014 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01612/1.863, allocations: 5.641 MB / 1.334 GB, free: 27.66 MB / 1.014 GB Notification: Performance of NFSimplifyModel.simplify: time 0.007872/1.871, allocations: 3.665 MB / 1.338 GB, free: 27.64 MB / 1.014 GB Notification: Performance of NFPackage.collectConstants: time 0.00185/1.873, allocations: 211.2 kB / 1.338 GB, free: 27.64 MB / 1.014 GB Notification: Performance of NFFlatten.collectFunctions: time 0.01122/1.884, allocations: 3.402 MB / 1.341 GB, free: 27.58 MB / 1.014 GB Notification: Performance of NFScalarize.scalarize: time 0.002975/1.887, allocations: 1.145 MB / 1.343 GB, free: 27.58 MB / 1.014 GB Notification: Performance of NFVerifyModel.verify: time 0.003105/1.89, allocations: 1.062 MB / 1.344 GB, free: 27.55 MB / 1.014 GB Notification: Performance of NFConvertDAE.convert: time 0.009802/1.9, allocations: 6.359 MB / 1.35 GB, free: 26.27 MB / 1.014 GB Notification: Performance of FrontEnd - DAE generated: time 6.052e-06/1.9, allocations: 1.438 kB / 1.35 GB, free: 26.27 MB / 1.014 GB Notification: Performance of FrontEnd: time 2.315e-06/1.9, allocations: 0 / 1.35 GB, free: 26.27 MB / 1.014 GB Notification: Performance of Transformations before backend: time 0.0002282/1.9, allocations: 0 / 1.35 GB, free: 26.27 MB / 1.014 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 822 * Number of variables: 822 Notification: Performance of Generate backend data structure: time 0.01417/1.915, allocations: 5.318 MB / 1.355 GB, free: 23.12 MB / 1.014 GB Notification: Performance of prepare preOptimizeDAE: time 3.971e-05/1.915, allocations: 10.03 kB / 1.355 GB, free: 23.12 MB / 1.014 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.001225/1.916, allocations: 433.6 kB / 1.355 GB, free: 22.98 MB / 1.014 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01035/1.926, allocations: 2.22 MB / 1.358 GB, free: 22.11 MB / 1.014 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.00865/1.935, allocations: 3.614 MB / 1.361 GB, free: 20.68 MB / 1.014 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.002677/1.938, allocations: 0.9061 MB / 1.362 GB, free: 20.45 MB / 1.014 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.001158/1.939, allocations: 355.3 kB / 1.362 GB, free: 20.45 MB / 1.014 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01053/1.949, allocations: 4.882 MB / 1.367 GB, free: 19.11 MB / 1.014 GB Notification: Performance of preOpt findStateOrder (simulation): time 5.937e-05/1.949, allocations: 6.156 kB / 1.367 GB, free: 19.11 MB / 1.014 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0003894/1.95, allocations: 132.7 kB / 1.367 GB, free: 19.11 MB / 1.014 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001209/1.95, allocations: 148.9 kB / 1.367 GB, free: 19.09 MB / 1.014 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01293/1.963, allocations: 5.575 MB / 1.373 GB, free: 18.05 MB / 1.014 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 0.03452/1.998, allocations: 19.71 MB / 1.392 GB, free: 6.273 MB / 1.014 GB Notification: Performance of preOpt comSubExp (simulation): time 0.01073/2.008, allocations: 4.111 MB / 1.396 GB, free: 5.41 MB / 1.014 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.005395/2.014, allocations: 2.141 MB / 1.398 GB, free: 5.016 MB / 1.014 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0009691/2.015, allocations: 0.6993 MB / 1.399 GB, free: 4.32 MB / 1.014 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.006465/2.021, allocations: 2.411 MB / 1.401 GB, free: 2.5 MB / 1.014 GB Notification: Performance of pre-optimization done (n=251): time 5.821e-06/2.021, allocations: 0 / 1.401 GB, free: 2.5 MB / 1.014 GB Notification: Performance of matching and sorting (n=251): time 0.01698/2.038, allocations: 6.108 MB / 1.407 GB, free: 13.74 MB / 1.029 GB Notification: Performance of inlineWhenForInitialization (initialization): time 9.108e-05/2.038, allocations: 110.9 kB / 1.407 GB, free: 13.62 MB / 1.029 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.005501/2.044, allocations: 3.61 MB / 1.411 GB, free: 11 MB / 1.029 GB Notification: Performance of collectPreVariables (initialization): time 0.0008447/2.045, allocations: 92.02 kB / 1.411 GB, free: 10.95 MB / 1.029 GB Notification: Performance of collectInitialEqns (initialization): time 0.00171/2.047, allocations: 1.844 MB / 1.413 GB, free: 10.02 MB / 1.029 GB Notification: Performance of collectInitialBindings (initialization): time 0.001229/2.048, allocations: 0.8425 MB / 1.414 GB, free: 9.293 MB / 1.029 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002582/2.048, allocations: 62.92 kB / 1.414 GB, free: 9.281 MB / 1.029 GB Notification: Performance of setup shared object (initialization): time 0.000206/2.048, allocations: 422.9 kB / 1.414 GB, free: 8.91 MB / 1.029 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.00522/2.053, allocations: 1.997 MB / 1.416 GB, free: 7.418 MB / 1.029 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.006196/2.06, allocations: 2.736 MB / 1.419 GB, free: 5.031 MB / 1.029 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.00577/2.065, allocations: 2.127 MB / 1.421 GB, free: 3.504 MB / 1.029 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.336e-05/2.066, allocations: 4 kB / 1.421 GB, free: 3.5 MB / 1.029 GB Notification: Performance of matching and sorting (n=389) (initialization): time 0.0155/2.081, allocations: 5.158 MB / 1.426 GB, free: 15.54 MB / 1.045 GB Notification: Performance of prepare postOptimizeDAE: time 0.0003267/2.081, allocations: 459 kB / 1.426 GB, free: 14.97 MB / 1.045 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.671e-05/2.081, allocations: 12 kB / 1.426 GB, free: 14.96 MB / 1.045 GB Notification: Performance of postOpt tearingSystem (initialization): time 4.503e-05/2.082, allocations: 24 kB / 1.426 GB, free: 14.94 MB / 1.045 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.006653/2.088, allocations: 1.217 MB / 1.427 GB, free: 13.79 MB / 1.045 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003052/2.091, allocations: 5.964 MB / 1.433 GB, free: 7.703 MB / 1.045 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.006315/2.098, allocations: 0.8354 MB / 1.434 GB, free: 6.918 MB / 1.045 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0008465/2.098, allocations: 159.2 kB / 1.434 GB, free: 6.789 MB / 1.045 GB Notification: Performance of prepare postOptimizeDAE: time 1.254e-05/2.098, allocations: 8 kB / 1.434 GB, free: 6.781 MB / 1.045 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.01293/2.111, allocations: 4.759 MB / 1.439 GB, free: 3.273 MB / 1.045 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.916e-05/2.111, allocations: 12 kB / 1.439 GB, free: 3.262 MB / 1.045 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.481e-05/2.112, allocations: 25.86 kB / 1.439 GB, free: 3.238 MB / 1.045 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.005261/2.117, allocations: 1.086 MB / 1.44 GB, free: 2.223 MB / 1.045 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 6.645e-05/2.117, allocations: 37.41 kB / 1.44 GB, free: 2.191 MB / 1.045 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.007402/2.124, allocations: 0.8103 MB / 1.441 GB, free: 1.43 MB / 1.045 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001131/2.125, allocations: 151 kB / 1.441 GB, free: 1.309 MB / 1.045 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 47 * Number of states: 0 () * Number of discrete variables: 15 (hexCroUnm.flowRegime,$whenCondition1,hexPar.flowRegime,hexCou.flowRegime,hexCroC1Mix.flowRegime,hexCroC1Unm.flowRegime,$PRE.trapezoid.T_start,trapezoid.T_start,$PRE.trapezoid.count,trapezoid.count,hexPar.flowRegime_nominal,hexCou.flowRegime_nominal,hexCroC1Mix.flowRegime_nominal,hexCroC1Unm.flowRegime_nominal,hexCroUnm.flowRegime_nominal) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (388): * Single equations (assignments): 377 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 10 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 10 {1,1,1,1,1,1,1,1,1,1} * Without analytic Jacobian: 0 Notification: Performance of prepare postOptimizeDAE: time 0.00358/2.129, allocations: 0.9158 MB / 1.442 GB, free: 0.7969 MB / 1.045 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.001643/2.131, allocations: 442.5 kB / 1.442 GB, free: 368 kB / 1.045 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01354/2.144, allocations: 4.882 MB / 1.447 GB, free: 12.7 MB / 1.061 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.941e-05/2.144, allocations: 28 kB / 1.447 GB, free: 12.68 MB / 1.061 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.293e-05/2.144, allocations: 0 / 1.447 GB, free: 12.68 MB / 1.061 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.481e-05/2.144, allocations: 11.95 kB / 1.447 GB, free: 12.66 MB / 1.061 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.02089/2.165, allocations: 9.289 MB / 1.456 GB, free: 5.992 MB / 1.061 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.663e-05/2.165, allocations: 4 kB / 1.456 GB, free: 5.988 MB / 1.061 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.004315/2.17, allocations: 0.9006 MB / 1.457 GB, free: 5.141 MB / 1.061 GB Notification: Performance of postOpt tearingSystem (simulation): time 4.626e-05/2.17, allocations: 16 kB / 1.457 GB, free: 5.125 MB / 1.061 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0003284/2.17, allocations: 89.38 kB / 1.457 GB, free: 5.074 MB / 1.061 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.002978/2.173, allocations: 5.936 MB / 1.463 GB, free: 15.01 MB / 1.076 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.259e-05/2.173, allocations: 10.81 kB / 1.463 GB, free: 15 MB / 1.076 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01337/2.186, allocations: 4.792 MB / 1.468 GB, free: 11.07 MB / 1.076 GB Notification: Performance of postOpt removeConstants (simulation): time 0.003547/2.19, allocations: 0.9883 MB / 1.469 GB, free: 10.31 MB / 1.076 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001542/2.192, allocations: 53.81 kB / 1.469 GB, free: 10.29 MB / 1.076 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.005712/2.197, allocations: 0.608 MB / 1.469 GB, free: 9.723 MB / 1.076 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000911/2.198, allocations: 204.3 kB / 1.469 GB, free: 9.551 MB / 1.076 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0007489/2.199, allocations: 128.1 kB / 1.47 GB, free: 9.445 MB / 1.076 GB Notification: Performance of sorting global known variables: time 0.005216/2.204, allocations: 2.381 MB / 1.472 GB, free: 7.773 MB / 1.076 GB Notification: Performance of sort global known variables: time 2.81e-07/2.204, allocations: 0 / 1.472 GB, free: 7.773 MB / 1.076 GB Notification: Performance of remove unused functions: time 0.009279/2.214, allocations: 2.285 MB / 1.474 GB, free: 5.645 MB / 1.076 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 20 * Number of states: 0 () * Number of discrete variables: 7 ($whenCondition1,hexPar.flowRegime,hexCou.flowRegime,hexCroC1Mix.flowRegime,hexCroC1Unm.flowRegime,trapezoid.T_start,trapezoid.count) * Number of discrete states: 1 (trapezoid.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (283): * Single equations (assignments): 269 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 2 * When equations: 2 * If-equations: 0 * Equation systems (linear and non-linear blocks): 10 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 10 {1,1,1,1,1,1,1,1,1,1} * Without analytic Jacobian: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.01506/2.229, allocations: 5.976 MB / 1.48 GB, free: 0.6797 MB / 1.076 GB Notification: Performance of simCode: created initialization part: time 0.02165/2.25, allocations: 7.524 MB / 1.487 GB, free: 10.91 MB / 1.092 GB Notification: Performance of simCode: created event and clocks part: time 1.769e-05/2.25, allocations: 7.391 kB / 1.487 GB, free: 10.91 MB / 1.092 GB Notification: Performance of simCode: created simulation system equations: time 0.006804/2.257, allocations: 2.427 MB / 1.49 GB, free: 9.098 MB / 1.092 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.01267/2.27, allocations: 2.088 MB / 1.492 GB, free: 7.406 MB / 1.092 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.08092/2.351, allocations: 32.5 MB / 1.523 GB, free: 9.848 MB / 1.123 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.003641/2.355, allocations: 2.379 MB / 1.526 GB, free: 7.5 MB / 1.123 GB Notification: Performance of simCode: alias equations: time 0.008917/2.364, allocations: 1.245 MB / 1.527 GB, free: 6.297 MB / 1.123 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.003451/2.367, allocations: 1.892 MB / 1.529 GB, free: 5.836 MB / 1.123 GB Notification: Performance of SimCode: time 1.443e-06/2.367, allocations: 0 / 1.529 GB, free: 5.836 MB / 1.123 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.1874/2.554, allocations: 120 MB / 1.646 GB, free: 14.97 MB / 1.248 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0002206/2.555, allocations: 277.2 kB / 1.646 GB, free: 14.61 MB / 1.248 GB Notification: Performance of buildModelFMU: Generate platform static: time 5.683/8.238, allocations: 0 / 1.646 GB, free: 14.61 MB / 1.248 GB (rm -f Buildings_9_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.pipe ; mkfifo Buildings_9_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.pipe ; head -c 1048576 < Buildings_9_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.pipe >> ../files/Buildings_9_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator -r=Buildings_9_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU_res.mat --tempDir=temp_Buildings_9_Buildings_Fluid_HeatExchangers_Validation_DryCoilEffectivenessNTU_fmu --startTime=0 --stopTime=360 --timeout=50 --tolerance=1e-06 Buildings_9_Buildings_Fluid_HeatExchangers_Validation_DryCoilEffectivenessNTU.fmu > Buildings_9_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.pipe 2>&1) TODO: How the !@#!# did the simulation report success but simulation result Buildings_9_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU_res.mat does not exist to compare? outputFormat=mat