Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ModelicaTest_4.1.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_overall_KC.conf.json
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo): time 0.001362/0.001362, allocations: 116.2 kB / 18.49 MB, free: 4.582 MB / 14.72 MB
"
[Timeout remaining time 180]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.1.0+maint.om/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.1.0+maint.om/package.mo): time 0.001421/0.001421, allocations: 214.9 kB / 21.46 MB, free: 1.629 MB / 14.72 MB
"
[Timeout remaining time 180]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/package.mo): time 1.482/1.482, allocations: 230.6 MB / 254.8 MB, free: 15.24 MB / 206.1 MB
"
[Timeout remaining time 178]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.1.0+maint.om/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.1.0+maint.om/package.mo): time 0.2473/0.2473, allocations: 46.92 MB / 357.8 MB, free: 10.31 MB / 286.1 MB
"
[Timeout remaining time 180]
Using package ModelicaTest with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.1.0+maint.om/package.mo)
Using package Modelica with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/package.mo)
Using package Complex with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.1.0+maint.om/package.mo)
Using package ModelicaServices with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo)
Running command: "" <> buildModelFMU(ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_overall_KC,fileNamePrefix="ModelicaTest_4_1_0_ModelicaTest_Fluid_Dissipation_Verifications_HeatTransfer_Plate_kc_overall_KC",fmuType="cs",version="2.0",platforms={"static"})
"" <> buildModelFMU(ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_overall_KC,fileNamePrefix="ModelicaTest_4_1_0_ModelicaTest_Fluid_Dissipation_Verifications_HeatTransfer_Plate_kc_overall_KC",fmuType="cs",version="2.0",platforms={"static"}) [Timeout 660]
"Notification: Performance of FrontEnd - loaded program: time 0.001935/0.001935, allocations: 71.83 kB / 0.4916 GB, free: 7.918 MB / 350.1 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.1501/0.152, allocations: 65.99 MB / 0.5561 GB, free: 5.805 MB / 414.1 MB
Notification: Performance of NFInst.instantiate(ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_overall_KC): time 0.00323/0.1552, allocations: 1.712 MB / 0.5578 GB, free: 4.082 MB / 414.1 MB
Notification: Performance of NFInst.instExpressions: time 0.002002/0.1572, allocations: 1.281 MB / 0.559 GB, free: 2.793 MB / 414.1 MB
Notification: Performance of NFInst.updateImplicitVariability: time 5.766e-05/0.1573, allocations: 0 / 0.559 GB, free: 2.793 MB / 414.1 MB
Notification: Performance of NFTyping.typeComponents: time 0.0002424/0.1575, allocations: 43.75 kB / 0.559 GB, free: 2.75 MB / 414.1 MB
Notification: Performance of NFTyping.typeBindings: time 0.0002807/0.1578, allocations: 63.72 kB / 0.5591 GB, free: 2.688 MB / 414.1 MB
Notification: Performance of NFTyping.typeClassSections: time 0.0004572/0.1583, allocations: 175.2 kB / 0.5593 GB, free: 2.516 MB / 414.1 MB
Notification: Performance of NFFlatten.flatten: time 0.0002497/0.1585, allocations: 159.3 kB / 0.5594 GB, free: 2.359 MB / 414.1 MB
Notification: Performance of NFFlatten.resolveConnections: time 5.573e-05/0.1586, allocations: 9.406 kB / 0.5594 GB, free: 2.348 MB / 414.1 MB
Notification: Performance of NFEvalConstants.evaluate: time 9.275e-05/0.1587, allocations: 63.77 kB / 0.5595 GB, free: 2.285 MB / 414.1 MB
Notification: Performance of NFSimplifyModel.simplify: time 0.000146/0.1588, allocations: 79.66 kB / 0.5596 GB, free: 2.207 MB / 414.1 MB
Notification: Performance of NFPackage.collectConstants: time 2.015e-05/0.1589, allocations: 4 kB / 0.5596 GB, free: 2.203 MB / 414.1 MB
Notification: Performance of NFFlatten.collectFunctions: time 0.0003322/0.1592, allocations: 163.7 kB / 0.5597 GB, free: 2.043 MB / 414.1 MB
Notification: Performance of NFScalarize.scalarize: time 8.001e-05/0.1593, allocations: 47.77 kB / 0.5598 GB, free: 1.996 MB / 414.1 MB
Notification: Performance of NFVerifyModel.verify: time 9.024e-05/0.1594, allocations: 71.59 kB / 0.5598 GB, free: 1.926 MB / 414.1 MB
Notification: Performance of NFConvertDAE.convert: time 0.0003939/0.1597, allocations: 239.1 kB / 0.5601 GB, free: 1.691 MB / 414.1 MB
Notification: Performance of FrontEnd - DAE generated: time 3.818e-06/0.1598, allocations: 0 / 0.5601 GB, free: 1.691 MB / 414.1 MB
Notification: Performance of FrontEnd: time 1.513e-06/0.1598, allocations: 0 / 0.5601 GB, free: 1.691 MB / 414.1 MB
Notification: Performance of Transformations before backend: time 6.342e-06/0.1598, allocations: 4 kB / 0.5601 GB, free: 1.688 MB / 414.1 MB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 34
 * Number of variables: 34
Notification: Performance of Generate backend data structure: time 0.0007707/0.1605, allocations: 482.4 kB / 0.5605 GB, free: 1.168 MB / 414.1 MB
Notification: Performance of prepare preOptimizeDAE: time 4.185e-05/0.1606, allocations: 15.97 kB / 0.5606 GB, free: 1.152 MB / 414.1 MB
Notification: Performance of preOpt introduceOutputRealDerivatives (simulation): time 1.704e-05/0.1606, allocations: 192 / 0.5606 GB, free: 1.152 MB / 414.1 MB
Notification: Performance of preOpt introduceOutputAliases (simulation): time 5.158e-05/0.1606, allocations: 54.73 kB / 0.5606 GB, free: 1.09 MB / 414.1 MB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001704/0.1623, allocations: 192.6 kB / 0.5608 GB, free: 0.9023 MB / 414.1 MB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.0003054/0.1627, allocations: 236 kB / 0.561 GB, free: 0.6328 MB / 414.1 MB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.617e-05/0.1627, allocations: 8.375 kB / 0.561 GB, free: 0.625 MB / 414.1 MB
Notification: Performance of preOpt expandDerOperator (simulation): time 4.681e-05/0.1627, allocations: 16.36 kB / 0.561 GB, free: 0.6094 MB / 414.1 MB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.0006611/0.1634, allocations: 355.6 kB / 0.5614 GB, free: 256 kB / 414.1 MB
Notification: Performance of preOpt findStateOrder (simulation): time 1.061e-05/0.1634, allocations: 4 kB / 0.5614 GB, free: 252 kB / 414.1 MB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 3.122e-05/0.1634, allocations: 4 kB / 0.5614 GB, free: 248 kB / 414.1 MB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.818e-05/0.1635, allocations: 23.97 kB / 0.5614 GB, free: 224 kB / 414.1 MB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0007391/0.1642, allocations: 363.7 kB / 0.5618 GB, free: 15.86 MB / 430.1 MB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.001607/0.1658, allocations: 0.8082 MB / 0.5625 GB, free: 15 MB / 430.1 MB
Notification: Performance of preOpt comSubExp (simulation): time 0.0006934/0.1665, allocations: 341.8 kB / 0.5629 GB, free: 14.66 MB / 430.1 MB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0002641/0.1668, allocations: 116.8 kB / 0.563 GB, free: 14.54 MB / 430.1 MB
Notification: Performance of preOpt evalFunc (simulation): time 3.001e-05/0.1668, allocations: 4 kB / 0.563 GB, free: 14.54 MB / 430.1 MB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.655e-05/0.1668, allocations: 34.55 kB / 0.563 GB, free: 14.49 MB / 430.1 MB
Notification: Performance of pre-optimization done (n=13): time 1.813e-06/0.1668, allocations: 0 / 0.563 GB, free: 14.49 MB / 430.1 MB
Notification: Performance of matching and sorting (n=13): time 0.00106/0.1679, allocations: 437 kB / 0.5634 GB, free: 14.06 MB / 430.1 MB
Notification: Performance of inlineWhenForInitialization (initialization): time 5.18e-05/0.1679, allocations: 55.41 kB / 0.5635 GB, free: 13.99 MB / 430.1 MB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.000253/0.1682, allocations: 222.3 kB / 0.5637 GB, free: 13.77 MB / 430.1 MB
Notification: Performance of collectPreVariables (initialization): time 3.687e-05/0.1682, allocations: 33.7 kB / 0.5637 GB, free: 13.73 MB / 430.1 MB
Notification: Performance of collectInitialEqns (initialization): time 8.746e-05/0.1683, allocations: 112 kB / 0.5638 GB, free: 13.61 MB / 430.1 MB
Notification: Performance of collectInitialBindings (initialization): time 6.373e-05/0.1684, allocations: 51.52 kB / 0.5639 GB, free: 13.56 MB / 430.1 MB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001237/0.1685, allocations: 61.64 kB / 0.5639 GB, free: 13.5 MB / 430.1 MB
Notification: Performance of setup shared object (initialization): time 0.0001555/0.1687, allocations: 330.8 kB / 0.5643 GB, free: 13.16 MB / 430.1 MB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002872/0.1689, allocations: 124 kB / 0.5644 GB, free: 13.04 MB / 430.1 MB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0003014/0.1692, allocations: 151.2 kB / 0.5645 GB, free: 12.88 MB / 430.1 MB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0006209/0.1699, allocations: 295.1 kB / 0.5648 GB, free: 12.58 MB / 430.1 MB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.555e-06/0.1699, allocations: 0 / 0.5648 GB, free: 12.58 MB / 430.1 MB
Notification: Performance of matching and sorting (n=16) (initialization): time 0.0007613/0.1706, allocations: 353.1 kB / 0.5651 GB, free: 12.23 MB / 430.1 MB
Notification: Performance of prepare postOptimizeDAE: time 2.115e-05/0.1707, allocations: 8.094 kB / 0.5651 GB, free: 12.22 MB / 430.1 MB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.871e-06/0.1707, allocations: 4 kB / 0.5652 GB, free: 12.22 MB / 430.1 MB
Notification: Performance of postOpt tearingSystem (initialization): time 1.709e-05/0.1707, allocations: 0 / 0.5652 GB, free: 12.22 MB / 430.1 MB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.02382/0.1945, allocations: 1.463 MB / 0.5666 GB, free: 10.75 MB / 430.1 MB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.04038/0.2349, allocations: 12.33 MB / 0.5786 GB, free: 13.58 MB / 446.1 MB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003576/0.2352, allocations: 23.83 kB / 0.5786 GB, free: 13.55 MB / 446.1 MB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.218e-05/0.2353, allocations: 24.12 kB / 0.5787 GB, free: 13.53 MB / 446.1 MB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 4
 * Number of states: 0 ()
 * Number of discrete variables: 0 ()
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (16):
 * Single equations (assignments): 10
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 6
 * Torn equation systems: 0
 * Mixed (continuous/discrete) equation systems: 0
Notification: Equation system details (not torn):
 * Constant Jacobian (size): 0 systems
 * Linear Jacobian (size,density): 0 systems
 * Non-linear Jacobian (size): 6 systems
   {1, 1, 1, 1, 1, 1}
 * Without analytic Jacobian (size): 0 systems
Notification: Performance of prepare postOptimizeDAE: time 0.0001871/0.2355, allocations: 139.9 kB / 0.5788 GB, free: 13.39 MB / 446.1 MB
Notification: Performance of postOpt lateInlineFunction (simulation): time 6.462e-05/0.2355, allocations: 15.91 kB / 0.5788 GB, free: 13.37 MB / 446.1 MB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 8.534e-05/0.2356, allocations: 37.5 kB / 0.5788 GB, free: 13.33 MB / 446.1 MB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.543e-06/0.2356, allocations: 0 / 0.5788 GB, free: 13.33 MB / 446.1 MB
Notification: Performance of postOpt constantLinearSystem (simulation): time 2.154e-06/0.2356, allocations: 0 / 0.5788 GB, free: 13.33 MB / 446.1 MB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.775e-06/0.2356, allocations: 4 kB / 0.5789 GB, free: 13.33 MB / 446.1 MB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0003953/0.236, allocations: 297.3 kB / 0.5791 GB, free: 12.99 MB / 446.1 MB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.774e-06/0.236, allocations: 0 / 0.5791 GB, free: 12.99 MB / 446.1 MB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.02348/0.2595, allocations: 1.459 MB / 0.5806 GB, free: 11.53 MB / 446.1 MB
Notification: Performance of postOpt tearingSystem (simulation): time 7.685e-06/0.2595, allocations: 0 / 0.5806 GB, free: 11.53 MB / 446.1 MB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.772e-05/0.2596, allocations: 11.97 kB / 0.5806 GB, free: 11.52 MB / 446.1 MB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.2933/0.5529, allocations: 12.32 MB / 0.5926 GB, free: 33.23 MB / 446.1 MB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.344e-06/0.5529, allocations: 2.625 kB / 0.5926 GB, free: 33.23 MB / 446.1 MB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0007613/0.5537, allocations: 413.7 kB / 0.593 GB, free: 33.11 MB / 446.1 MB
Notification: Performance of postOpt removeConstants (simulation): time 6.304e-05/0.5537, allocations: 95.67 kB / 0.5931 GB, free: 33.01 MB / 446.1 MB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 3.814e-05/0.5538, allocations: 3.453 kB / 0.5931 GB, free: 33.01 MB / 446.1 MB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000304/0.5541, allocations: 15.34 kB / 0.5931 GB, free: 33.01 MB / 446.1 MB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002926/0.5543, allocations: 60.72 kB / 0.5932 GB, free: 33.01 MB / 446.1 MB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.282e-05/0.5544, allocations: 15.7 kB / 0.5932 GB, free: 33.01 MB / 446.1 MB
Notification: Performance of sorting global known variables: time 0.0001388/0.5545, allocations: 170.1 kB / 0.5933 GB, free: 32.93 MB / 446.1 MB
Notification: Performance of sort global known variables: time 5e-08/0.5545, allocations: 0 / 0.5933 GB, free: 32.93 MB / 446.1 MB
Notification: Performance of remove unused functions: time 0.0006947/0.5552, allocations: 120.5 kB / 0.5935 GB, free: 32.93 MB / 446.1 MB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 1
 * Number of states: 0 ()
 * 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 (13):
 * Single equations (assignments): 7
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 6
 * Torn equation systems: 0
 * Mixed (continuous/discrete) equation systems: 0
Notification: Equation system details (not torn):
 * Constant Jacobian (size): 0 systems
 * Linear Jacobian (size,density): 0 systems
 * Non-linear Jacobian (size): 6 systems
   {1, 1, 1, 1, 1, 1}
 * Without analytic Jacobian (size): 0 systems
Notification: Performance of Backend phase and start with SimCode phase: time 0.001056/0.5563, allocations: 0.9747 MB / 0.5944 GB, free: 32.28 MB / 446.1 MB
Notification: Performance of simCode: created initialization part: time 0.02048/0.5767, allocations: 1.413 MB / 0.5958 GB, free: 32.28 MB / 446.1 MB
Notification: Performance of simCode: created event and clocks part: time 8.727e-06/0.5768, allocations: 4.469 kB / 0.5958 GB, free: 32.28 MB / 446.1 MB
Notification: Performance of simCode: created simulation system equations: time 0.0194/0.5962, allocations: 1.277 MB / 0.597 GB, free: 32.28 MB / 446.1 MB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0004566/0.5966, allocations: 41.44 kB / 0.5971 GB, free: 32.28 MB / 446.1 MB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.005687/0.6023, allocations: 2.721 MB / 0.5997 GB, free: 31.01 MB / 446.1 MB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0003226/0.6026, allocations: 0.7466 MB / 0.6005 GB, free: 30.32 MB / 446.1 MB
Notification: Performance of simCode: alias equations: time 0.0002068/0.6028, allocations: 49.53 kB / 0.6005 GB, free: 30.31 MB / 446.1 MB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001098/0.6029, allocations: 50.73 kB / 0.6006 GB, free: 30.3 MB / 446.1 MB
Notification: Performance of SimCode: time 1.152e-06/0.6029, allocations: 0 / 0.6006 GB, free: 30.3 MB / 446.1 MB
Notification: Performance of buildModelFMU: Generate the FMI files: time 0.0324/0.6353, allocations: 8.658 MB / 0.609 GB, free: 28.7 MB / 446.1 MB
Notification: Performance of buildModelFMU: Generate platform static: time 12.14/12.78, allocations: 18 kB / 0.609 GB, free: 28.69 MB / 446.1 MB
"
[Timeout remaining time 647]
(rm -f ModelicaTest_4.1.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_overall_KC.pipe ; mkfifo ModelicaTest_4.1.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_overall_KC.pipe ; head -c 1048576 < ModelicaTest_4.1.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_overall_KC.pipe >> ../files/ModelicaTest_4.1.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_overall_KC.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=ModelicaTest_4.1.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_overall_KC_res.mat --tempDir=temp_ModelicaTest_4_1_0_ModelicaTest_Fluid_Dissipation_Verifications_HeatTransfer_Plate_kc_overall_KC_fmu --startTime=0 --stopTime=1.01 --stepSize=0.000201839 --timeout=50 --tolerance=1e-07 ModelicaTest_4_1_0_ModelicaTest_Fluid_Dissipation_Verifications_HeatTransfer_Plate_kc_overall_KC.fmu > ModelicaTest_4.1.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_overall_KC.pipe 2>&1) [Timeout 52.5]
[Calling os._exit(0), Time elapsed: 16.049311101960484]
Failed to read output from testmodel.py, exit status != 0:
['time', 'cp[1]', 'cp[2]', 'cp[3]', 'eta[1]', 'eta[2]', 'eta[3]', 'lambda[1]', 'lambda[2]', 'lambda[3]', 'rho[1]', 'rho[2]', 'rho[3]', 'Nu[1]', 'Nu[2]', 'Nu[3]', 'velocity[1]', 'velocity[2]', 'velocity[3]', 'kc[1]', 'kc[2]', 'kc[3]', 'Pr[1]', 'Pr[2]', 'Pr[3]', 'Re[1]', 'Re[2]', 'Re[3]', 'input_Nu.y']
12.927760031016078 12.939861632 12.777909817
Calling exit ...
<OMPython.OMCSessionZMQ object at 0x7f848f9a73a0>