Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_9_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.Alarms.conf.json
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.1-maint.9.1.x/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/ModelicaServices 4.0.0+maint.om/package.mo", uses=false)
Using package ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/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 Buildings with version 9.1.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.1-maint.9.1.x/package.mo)
Running command: "" <> buildModelFMU(Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.Alarms,fileNamePrefix="Buildings_9_Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctMixConDischargeSensor_Subsequences_Validation_Alarms",fmuType="me",version="2.0",platforms={"static"})
"" <> buildModelFMU(Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.Alarms,fileNamePrefix="Buildings_9_Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctMixConDischargeSensor_Subsequences_Validation_Alarms",fmuType="me",version="2.0",platforms={"static"})
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.1-maint.9.1.x/package.mo): time 2.344/2.344, allocations: 387.4 MB / 394.9 MB, free: 13.34 MB / 314.7 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001133/0.001133, allocations: 184.5 kB / 487.4 MB, free: 5.039 MB / 394.7 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.55/1.55, allocations: 221.5 MB / 0.7824 GB, free: 1.031 MB / 0.5417 GB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0009228/0.0009228, allocations: 95.72 kB / 0.9219 GB, free: 2.27 MB / 0.6823 GB
Notification: Performance of FrontEnd - loaded program: time 1.78e-05/1.791e-05, allocations: 4 kB / 1.067 GB, free: 185.6 MB / 0.7605 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.2594/0.2594, allocations: 142.4 MB / 1.206 GB, free: 43.84 MB / 0.7605 GB
Notification: Performance of FrontEnd - scodeFlatten: time 1.01/1.269, allocations: 151.8 MB / 1.354 GB, free: 18.38 MB / 0.823 GB
Notification: Performance of FrontEnd - mkProgramGraph: time 0.0002719/1.27, allocations: 77 kB / 1.354 GB, free: 18.37 MB / 0.823 GB
Notification: Performance of FrontEnd - DAE generated: time 0.03312/1.303, allocations: 12.66 MB / 1.367 GB, free: 33.37 MB / 0.8386 GB
Notification: Performance of FrontEnd: time 1.663e-06/1.303, allocations: 0 / 1.367 GB, free: 33.37 MB / 0.8386 GB
Notification: Performance of Transformations before backend: time 4.644e-05/1.303, allocations: 15.47 kB / 1.367 GB, free: 33.37 MB / 0.8386 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 136
 * Number of variables: 136
Notification: Performance of Generate backend data structure: time 0.002196/1.305, allocations: 1.078 MB / 1.368 GB, free: 32.69 MB / 0.8386 GB
Notification: Performance of prepare preOptimizeDAE: time 6.658e-05/1.305, allocations: 15.56 kB / 1.368 GB, free: 32.69 MB / 0.8386 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0002782/1.306, allocations: 99.94 kB / 1.368 GB, free: 32.64 MB / 0.8386 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.00115/1.307, allocations: 0.599 MB / 1.369 GB, free: 32.37 MB / 0.8386 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.875e-05/1.307, allocations: 25.14 kB / 1.369 GB, free: 32.37 MB / 0.8386 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001212/1.307, allocations: 63.8 kB / 1.369 GB, free: 32.37 MB / 0.8386 GB
Notification: Performance of preOpt removeEqualFunctionCalls (simulation): time 0.0006651/1.308, allocations: 343 kB / 1.369 GB, free: 32.37 MB / 0.8386 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.0007762/1.308, allocations: 452 kB / 1.369 GB, free: 32.32 MB / 0.8386 GB
Notification: Performance of preOpt findStateOrder (simulation): time 1.619e-05/1.308, allocations: 4 kB / 1.369 GB, free: 32.32 MB / 0.8386 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.288e-05/1.309, allocations: 6.625 kB / 1.369 GB, free: 32.32 MB / 0.8386 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.356e-05/1.309, allocations: 11.5 kB / 1.369 GB, free: 32.32 MB / 0.8386 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002837/1.311, allocations: 1.689 MB / 1.371 GB, free: 31.95 MB / 0.8386 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.000653/1.312, allocations: 464.2 kB / 1.372 GB, free: 31.92 MB / 0.8386 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0002429/1.312, allocations: 186 kB / 1.372 GB, free: 31.91 MB / 0.8386 GB
Notification: Performance of preOpt evalFunc (simulation): time 2.944e-05/1.312, allocations: 4.25 kB / 1.372 GB, free: 31.91 MB / 0.8386 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0006553/1.313, allocations: 400.8 kB / 1.372 GB, free: 31.84 MB / 0.8386 GB
Notification: Performance of pre-optimization done (n=65): time 2.805e-06/1.313, allocations: 0 / 1.372 GB, free: 31.84 MB / 0.8386 GB
Notification: Performance of matching and sorting (n=65): time 0.000999/1.314, allocations: 0.5913 MB / 1.373 GB, free: 31.77 MB / 0.8386 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 3.883e-05/1.314, allocations: 62.28 kB / 1.373 GB, free: 31.7 MB / 0.8386 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0003708/1.314, allocations: 377 kB / 1.373 GB, free: 31.57 MB / 0.8386 GB
Notification: Performance of collectPreVariables (initialization): time 9.139e-05/1.315, allocations: 48.33 kB / 1.373 GB, free: 31.54 MB / 0.8386 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0002448/1.315, allocations: 300.2 kB / 1.373 GB, free: 31.4 MB / 0.8386 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0001141/1.315, allocations: 139.9 kB / 1.374 GB, free: 31.32 MB / 0.8386 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 5.471e-05/1.315, allocations: 3.812 kB / 1.374 GB, free: 31.32 MB / 0.8386 GB
Notification: Performance of setup shared object (initialization): time 0.0001822/1.315, allocations: 375.9 kB / 1.374 GB, free: 31.01 MB / 0.8386 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003851/1.316, allocations: 250.3 kB / 1.374 GB, free: 31 MB / 0.8386 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004614/1.316, allocations: 428.7 kB / 1.375 GB, free: 30.78 MB / 0.8386 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0006752/1.317, allocations: 268.4 kB / 1.375 GB, free: 30.75 MB / 0.8386 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.157e-06/1.317, allocations: 0 / 1.375 GB, free: 30.75 MB / 0.8386 GB
Notification: Performance of matching and sorting (n=97) (initialization): time 0.001345/1.318, allocations: 0.741 MB / 1.376 GB, free: 30.65 MB / 0.8386 GB
Notification: Performance of prepare postOptimizeDAE: time 9.289e-05/1.318, allocations: 131.9 kB / 1.376 GB, free: 30.53 MB / 0.8386 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.278e-05/1.318, allocations: 3.844 kB / 1.376 GB, free: 30.53 MB / 0.8386 GB
Notification: Performance of postOpt tearingSystem (initialization): time 2.634e-05/1.318, allocations: 11.69 kB / 1.376 GB, free: 30.53 MB / 0.8386 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004242/1.319, allocations: 111.3 kB / 1.376 GB, free: 30.51 MB / 0.8386 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.294e-05/1.319, allocations: 9.578 kB / 1.376 GB, free: 30.51 MB / 0.8386 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001045/1.32, allocations: 235.9 kB / 1.376 GB, free: 30.49 MB / 0.8386 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.279e-05/1.32, allocations: 46.09 kB / 1.376 GB, free: 30.49 MB / 0.8386 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 21
 * Number of states: 0 ()
 * Number of discrete variables: 74 ($PRE.ala.truDel.u,$PRE.ala.truDel1.u,$PRE.ala.truDel6.u,$PRE.ala.truDel7.u,$whenCondition19,$whenCondition20,$whenCondition17,$whenCondition18,$whenCondition15,$whenCondition16,$whenCondition13,$whenCondition14,$whenCondition10,$PRE.ala.truDel7.t_next,$whenCondition7,$PRE.ala.truDel6.t_next,$whenCondition4,$PRE.ala.truDel1.t_next,$whenCondition1,$PRE.ala.truDel.t_next,ala.truDel7.t_next,ala.truDel6.t_next,ala.truDel1.t_next,ala.truDel.t_next,$whenCondition11,$whenCondition12,$whenCondition8,$whenCondition9,$whenCondition5,$whenCondition6,$whenCondition2,$whenCondition3,ala.yLowFloAla,ala.yFloSenAla,ala.yLeaDamAla,$PRE.ala.les.lesHys.y,ala.les.lesHys.y,ala.truDel.u,ala.truDel.y,$PRE.ala.greThr.greHys.y,ala.greThr.greHys.y,$PRE.ala.gre.greHys.y,ala.gre.greHys.y,ala.truDel1.u,ala.truDel1.y,ala.and2.y,ala.and1.y,ala.lowFloAla.y,ala.booToInt.y,ala.booToInt1.y,ala.and3.y,ala.assMes1.u,$PRE.ala.cloDam.lesHys.y,ala.cloDam.lesHys.y,$PRE.ala.cloDam1.lesHys.y,ala.cloDam1.lesHys.y,$PRE.ala.gre3.greHys.y,ala.gre3.greHys.y,ala.assMes6.u,ala.truDel6.u,ala.truDel6.y,ala.truDel7.u,ala.truDel7.y,ala.cloBotDam.y,ala.booToInt7.u,$PRE.supCooFan.y,supCooFan.y,$PRE.colDammSta.y,colDammSta.y,$PRE.supHeaFan.y,supHeaFan.y,$PRE.heaDammSta.y,heaDammSta.y,ala.and3.u2)
 * Number of discrete states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (89):
 * Single equations (assignments): 85
 * Array equations: 0
 * Algorithm blocks: 4
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (linear and non-linear blocks): 0
 * Torn equation systems: 0
 * Mixed (continuous/discrete) equation systems: 0
Notification: Performance of prepare postOptimizeDAE: time 0.0002617/1.32, allocations: 174.8 kB / 1.376 GB, free: 30.36 MB / 0.8386 GB
Notification: Performance of postOpt createAliasVarsForOutputStates (simulation): time 0.0008594/1.321, allocations: 0.5712 MB / 1.377 GB, free: 30.28 MB / 0.8386 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 7.386e-05/1.321, allocations: 60.81 kB / 1.377 GB, free: 30.25 MB / 0.8386 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0001391/1.321, allocations: 56.94 kB / 1.377 GB, free: 30.24 MB / 0.8386 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.462e-06/1.321, allocations: 7.875 kB / 1.377 GB, free: 30.24 MB / 0.8386 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 4.619e-06/1.321, allocations: 4 kB / 1.377 GB, free: 30.24 MB / 0.8386 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 7.013e-06/1.321, allocations: 6.422 kB / 1.377 GB, free: 30.23 MB / 0.8386 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001742/1.323, allocations: 1.328 MB / 1.378 GB, free: 29.92 MB / 0.8386 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.577e-06/1.323, allocations: 0 / 1.378 GB, free: 29.92 MB / 0.8386 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002969/1.323, allocations: 78.19 kB / 1.378 GB, free: 29.91 MB / 0.8386 GB
Notification: Performance of postOpt tearingSystem (simulation): time 5.911e-06/1.323, allocations: 0 / 1.378 GB, free: 29.91 MB / 0.8386 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.223e-05/1.323, allocations: 15.52 kB / 1.378 GB, free: 29.91 MB / 0.8386 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 4.378e-06/1.323, allocations: 3.953 kB / 1.378 GB, free: 29.9 MB / 0.8386 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.439e-06/1.323, allocations: 3.812 kB / 1.378 GB, free: 29.9 MB / 0.8386 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0008013/1.324, allocations: 0.7122 MB / 1.379 GB, free: 29.65 MB / 0.8386 GB
Notification: Performance of postOpt removeConstants (simulation): time 7.711e-05/1.324, allocations: 116 kB / 1.379 GB, free: 29.53 MB / 0.8386 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 8.778e-05/1.324, allocations: 22.31 kB / 1.379 GB, free: 29.52 MB / 0.8386 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.00049/1.325, allocations: 89.23 kB / 1.379 GB, free: 29.49 MB / 0.8386 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001678/1.325, allocations: 96.3 kB / 1.379 GB, free: 29.45 MB / 0.8386 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.619e-05/1.325, allocations: 37.89 kB / 1.379 GB, free: 29.45 MB / 0.8386 GB
Notification: Performance of sorting global known variables: time 0.0002323/1.325, allocations: 254 kB / 1.38 GB, free: 29.34 MB / 0.8386 GB
Notification: Performance of sort global known variables: time 1.5e-07/1.325, allocations: 0 / 1.38 GB, free: 29.34 MB / 0.8386 GB
Notification: Performance of remove unused functions: time 0.0006812/1.326, allocations: 173.2 kB / 1.38 GB, free: 29.31 MB / 0.8386 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 2
 * Number of states: 0 ()
 * Number of discrete variables: 55 (ala.truDel6.u,ala.truDel.u,ala.truDel1.u,ala.truDel7.u,$whenCondition19,$whenCondition20,$whenCondition17,$whenCondition18,$whenCondition15,$whenCondition16,$whenCondition13,$whenCondition14,$whenCondition10,$whenCondition11,$whenCondition12,$whenCondition7,$whenCondition8,$whenCondition9,$whenCondition4,$whenCondition5,$whenCondition6,$whenCondition1,$whenCondition2,$whenCondition3,ala.yLowFloAla,ala.yFloSenAla,ala.yLeaDamAla,ala.les.lesHys.y,ala.truDel.y,ala.truDel.t_next,ala.greThr.greHys.y,ala.gre.greHys.y,ala.truDel1.y,ala.truDel1.t_next,ala.and2.y,ala.and1.y,ala.lowFloAla.y,ala.booToInt.y,ala.and3.y,ala.assMes1.u,ala.cloDam.lesHys.y,ala.cloDam1.lesHys.y,ala.gre3.greHys.y,ala.assMes6.u,ala.truDel6.y,ala.truDel6.t_next,ala.truDel7.y,ala.truDel7.t_next,ala.cloBotDam.y,ala.booToInt7.u,supCooFan.y,colDammSta.y,supHeaFan.y,heaDammSta.y,ala.booToInt1.y)
 * Number of discrete states: 10 (ala.truDel7.t_next,ala.truDel6.t_next,ala.truDel1.t_next,ala.truDel.t_next,ala.greThr.greHys.y,ala.gre3.greHys.y,ala.gre.greHys.y,ala.les.lesHys.y,ala.cloDam1.lesHys.y,ala.cloDam.lesHys.y)
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (65):
 * Single equations (assignments): 53
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 12
 * If-equations: 0
 * Equation systems (linear and non-linear blocks): 0
 * Torn equation systems: 0
 * Mixed (continuous/discrete) equation systems: 0
Notification: Performance of Backend phase and start with SimCode phase: time 0.001253/1.327, allocations: 1.38 MB / 1.381 GB, free: 28.45 MB / 0.8386 GB
Notification: Performance of simCode: created initialization part: time 0.001054/1.328, allocations: 0.8345 MB / 1.382 GB, free: 28.16 MB / 0.8386 GB
Notification: Performance of simCode: created event and clocks part: time 3.817e-06/1.328, allocations: 4.188 kB / 1.382 GB, free: 28.15 MB / 0.8386 GB
Notification: Performance of simCode: created simulation system equations: time 0.000372/1.329, allocations: 308.7 kB / 1.382 GB, free: 28.14 MB / 0.8386 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0005042/1.329, allocations: 85.7 kB / 1.382 GB, free: 28.11 MB / 0.8386 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001881/1.331, allocations: 0.892 MB / 1.383 GB, free: 27.7 MB / 0.8386 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004149/1.332, allocations: 0.9101 MB / 1.384 GB, free: 26.89 MB / 0.8386 GB
Notification: Performance of simCode: alias equations: time 0.0002826/1.332, allocations: 67.47 kB / 1.384 GB, free: 26.86 MB / 0.8386 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003302/1.332, allocations: 237.9 kB / 1.384 GB, free: 26.83 MB / 0.8386 GB
Notification: Performance of SimCode: time 2.81e-07/1.332, allocations: 0 / 1.384 GB, free: 26.83 MB / 0.8386 GB
Notification: Performance of buildModelFMU: Generate the FMI files: time 0.04341/1.376, allocations: 12.99 MB / 1.397 GB, free: 20.62 MB / 0.8386 GB
Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0001981/1.376, allocations: 210.8 kB / 1.397 GB, free: 20.34 MB / 0.8386 GB
Notification: Performance of buildModelFMU: Generate platform static: time 2.248/3.624, allocations: 1.562 kB / 1.397 GB, free: 20.34 MB / 0.8386 GB
(rm -f Buildings_9_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.Alarms.pipe ; mkfifo Buildings_9_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.Alarms.pipe ; head -c 1048576 < Buildings_9_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.Alarms.pipe >> ../files/Buildings_9_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.Alarms.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator -r=Buildings_9_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.Alarms_res.mat --tempDir=temp_Buildings_9_Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctMixConDischargeSensor_Subsequences_Validation_Alarms_fmu --startTime=0 --stopTime=7200 --timeout=50 --tolerance=1e-06 Buildings_9_Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctMixConDischargeSensor_Subsequences_Validation_Alarms.fmu > Buildings_9_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.Alarms.pipe 2>&1)
TODO: How the !@#!# did the simulation report success but simulation result Buildings_9_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.Alarms_res.mat does not exist to compare? outputFormat=mat