Trace number 1094302

Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided into four (or five) parts:
  1. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock time.

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to X seconds (see the parameters in the trace). After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  5. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerCPU timeWall clock time
Abscon 112v4 ACSAT 1.39379 1.40948

DiagnosticValue
CHECKS26986
NODES722

General information on the benchmark

Namecsp/os-taillard-7/
normalized-os-taillard-7-105-8.xml
MD5SUM6477a09488ded448bf0a5b794999d82e
Bench Category2-ARY-INT (binary constraints in intension)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.031994
Satisfiable
(Un)Satisfiability was proved
Number of variables49
Number of constraints294
Maximum constraint arity2
Maximum domain size476
Number of constraints which are defined in extension0
Number of constraints which are defined in intension294
Global constraints used (with number of constraints)

Solver Data (download as text)

0.00/0.08	
0.00/0.08	Abscon 112 (May, 2008)
0.19/0.23	
0.19/0.23	   configuration
0.19/0.23	     name=mac.xml
0.19/0.27	   
0.19/0.27	   instance
0.19/0.27	     name=HOME/instance-1094302-1215279335.xml
0.29/0.30	   
0.29/0.30	   domains being loaded...
0.29/0.32	   
0.29/0.32	   variables being loaded...
0.29/0.35	     nbVariables=49  nbDomainTypes=49  minDomainSize=387  maxDomainSize=476  nbTotalValues=20874
0.29/0.35	       =>  wckTime=0.114  cpuTime=0.1  mem=7M886
0.29/0.35	   
0.29/0.35	   predicates being loaded...
0.39/0.41	   
0.39/0.41	   constraints being loaded...
0.59/0.68	     nbConstraints=301  nbGlobalConstraints=301  nbSharedBinaryRepresentations=0  minDegree=13  maxDegree=13  minArity=2
0.59/0.69	     avgArity=2.12  maxArity=7  nbGenerators=0  nbFusions=0  symmetryWckTime=0.092  symmetryCpuTime=0.05  nbCliques=7
0.59/0.69	       =>  wckTime=0.448  cpuTime=0.33  mem=16M737
0.68/0.74	   
0.68/0.74	   solver IterativeSystematicSolver being built... 
0.77/0.80	   
0.77/0.81	   INFO : Forward propagation technique limited 
0.77/0.87	       =>  wckTime=0.637  cpuTime=0.45  mem=21M237
0.77/0.88	   
0.77/0.88	   preprocessing
0.77/0.88	     nbConstraintChecks=0  nbPropagations=49  nbRevisions=0  nbUselessRevisions=0  nbRemovedValues=0
0.77/0.88	     detectedInconsistency=no
0.77/0.88	       =>  wckTime=0.0080  cpuTime=0.01  mem=22M213
1.27/1.39	   
1.27/1.39	   search
1.27/1.39	     run=8  nbConstraintChecks=26986  minDepth=50  maxDepth=49  nbPropagations=23922  nbRevisions=0
1.27/1.39	     nbUselessRevisions=0  nbAssignments=722  nbFailedAssignments=488  nbBacktracks=47  nbVisitedNodes=1250
1.27/1.39	     nbRestartNogoods=131  nbFoundSolutions=1  mapSize=43  nbInferences=0  nbTooLargeKeys=0  nbSEliminables=0
1.27/1.39	     nbREliminables=4.75  nbIEliminables=0  nbDEliminables=0  nbPEliminables=0
1.27/1.39	       =>  wckTime=0.512  cpuTime=0.45  mem=43M691
1.27/1.39	   
1.27/1.39	   global
1.27/1.39	     nbConstraintChecks=26986  nbPropagations=23971  nbRestartNogoods=131  solvingWckTime=0.514  solvingCpuTime=0.45
1.27/1.39	     expiredTime=no  totalExploration=no  nbFoundSolutions=1  firstSolutionCpuTime=0.9  globalCpuTime=0.93
1.27/1.39	       =>  wckTime=1.155  cpuTime=0.9  mem=43M691
1.27/1.39	   
1.27/1.39	s SATISFIABLE
1.27/1.39	v 387 165 44 320 418 93 238 0 148 225 107 72 260 335 179 455 226 92 382 0 44 90 438 319 0 388 185 227 123 414 185 260 0 328 93 0 226 397 253 335 90 179 227 244 399 123 92 306 0 
1.27/1.39	d NODES 722
1.27/1.39	d CHECKS 26986
1.27/1.39	   
1.27/1.39	   totalWckTime=1.22  totalCpuTime=0.93

Verifier Data (download as text)

OK

Watcher Data (download as text)

runsolver version 3.2.5 (c) roussel@cril.univ-artois.fr

command line: /home/evaluation/evaluation/pub/bin/runsolver --timestamp -w /tmp/evaluation-result-1094302-1215279335/watcher-1094302-1215279335 -o /tmp/evaluation-result-1094302-1215279335/solver-1094302-1215279335 -C 1800 -W 2200 -M 900 --output-limit 1,15 java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -cp abscon112V4.jar abscon.Resolution mac.xml 1 XSax HOME/instance-1094302-1215279335.xml 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 2200 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 921600 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 972800 KiB
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 1.99 1.99 1.99 4/81 6789
/proc/meminfo: memFree=1653144/2055920 swapFree=4180732/4192956
[pid=6789] ppid=6787 vsize=152 CPUtime=0
/proc/6789/stat : 6789 (java) R 6787 6789 6662 0 -1 0 205 0 0 0 0 0 0 0 18 0 1 0 2006904978 155648 26 996147200 134512640 134550740 4294955968 18446744073709551615 7393579 0 0 4096 0 0 0 0 17 0 0 0
/proc/6789/statm: 38 26 19 9 0 4 0

[startup+0.0831501 s]
/proc/loadavg: 1.99 1.99 1.99 4/81 6789
/proc/meminfo: memFree=1653144/2055920 swapFree=4180732/4192956
[pid=6789] ppid=6787 vsize=865884 CPUtime=0.07
/proc/6789/stat : 6789 (java) S 6787 6789 6662 0 -1 0 3633 0 1 0 5 2 0 0 18 0 9 0 2006904978 886665216 3121 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/6789/statm: 216471 3121 1672 9 0 211026 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 865884

[startup+0.10115 s]
/proc/loadavg: 1.99 1.99 1.99 4/81 6789
/proc/meminfo: memFree=1653144/2055920 swapFree=4180732/4192956
[pid=6789] ppid=6787 vsize=865884 CPUtime=0.09
/proc/6789/stat : 6789 (java) S 6787 6789 6662 0 -1 0 3810 0 1 0 7 2 0 0 18 0 9 0 2006904978 886665216 3261 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/6789/statm: 216471 3261 1724 9 0 211026 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 865884

[startup+0.301186 s]
/proc/loadavg: 1.99 1.99 1.99 4/81 6789
/proc/meminfo: memFree=1653144/2055920 swapFree=4180732/4192956
[pid=6789] ppid=6787 vsize=866400 CPUtime=0.29
/proc/6789/stat : 6789 (java) S 6787 6789 6662 0 -1 0 6052 0 1 0 25 4 0 0 18 0 9 0 2006904978 887193600 5426 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/6789/statm: 216600 5427 1960 9 0 211128 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 866400

[startup+0.70126 s]
/proc/loadavg: 1.99 1.99 1.99 4/81 6789
/proc/meminfo: memFree=1653144/2055920 swapFree=4180732/4192956
[pid=6789] ppid=6787 vsize=867404 CPUtime=0.68
/proc/6789/stat : 6789 (java) S 6787 6789 6662 0 -1 0 10637 163 1 0 60 8 0 0 18 0 10 0 2006904978 888221696 7998 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/6789/statm: 216851 7998 2075 9 0 211357 0
Current children cumulated CPU time (s) 0.68
Current children cumulated vsize (KiB) 867404

Solver just ended. Dumping a history of the last processes samples

[startup+1.10732 s]
/proc/loadavg: 1.99 1.99 1.99 3/90 6802
/proc/meminfo: memFree=1618256/2055920 swapFree=4180732/4192956
[pid=6789] ppid=6787 vsize=867536 CPUtime=1.07
/proc/6789/stat : 6789 (java) S 6787 6789 6662 0 -1 0 17940 285 1 0 97 10 0 0 18 0 9 0 2006904978 888356864 12470 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/6789/statm: 216884 12470 2632 9 0 211390 0
[pid=6789/tid=6791] ppid=6787 vsize=867536 CPUtime=0.8
/proc/6789/task/6791/stat : 6791 (java) R 6787 6789 6662 0 -1 64 13720 285 1 0 72 8 0 0 18 0 9 0 2006904979 888356864 12470 996147200 134512640 134550740 4294955968 18446744073709551615 4126889955 0 4 0 16800975 0 0 0 -1 1 0 0
[pid=6789/tid=6792] ppid=6787 vsize=867536 CPUtime=0.04
/proc/6789/task/6792/stat : 6792 (java) S 6787 6789 6662 0 -1 64 2680 285 0 0 4 0 0 0 17 0 9 0 2006904980 888356864 12470 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 0 0 16800975 0 0 0 -1 1 0 0
[pid=6789/tid=6793] ppid=6787 vsize=867536 CPUtime=0
/proc/6789/task/6793/stat : 6793 (java) S 6787 6789 6662 0 -1 64 16 285 0 0 0 0 0 0 16 0 9 0 2006904980 888356864 12470 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 1 0 0
[pid=6789/tid=6794] ppid=6787 vsize=867536 CPUtime=0
/proc/6789/task/6794/stat : 6794 (java) S 6787 6789 6662 0 -1 64 11 285 0 0 0 0 0 0 16 0 9 0 2006904980 888356864 12470 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 1 0 0
[pid=6789/tid=6795] ppid=6787 vsize=867536 CPUtime=0
/proc/6789/task/6795/stat : 6795 (java) S 6787 6789 6662 0 -1 64 1 285 0 0 0 0 0 0 24 0 9 0 2006904982 888356864 12470 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
[pid=6789/tid=6796] ppid=6787 vsize=867536 CPUtime=0.2
/proc/6789/task/6796/stat : 6796 (java) S 6787 6789 6662 0 -1 64 706 285 0 0 20 0 0 0 16 0 9 0 2006904982 888356864 12470 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 1 0 0
[pid=6789/tid=6797] ppid=6787 vsize=867536 CPUtime=0
/proc/6789/task/6797/stat : 6797 (java) S 6787 6789 6662 0 -1 64 1 285 0 0 0 0 0 0 25 0 9 0 2006904982 888356864 12470 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
[pid=6789/tid=6798] ppid=6787 vsize=867536 CPUtime=0
/proc/6789/task/6798/stat : 6798 (java) S 6787 6789 6662 0 -1 64 4 285 0 0 0 0 0 0 15 0 9 0 2006904982 888356864 12470 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
Current children cumulated CPU time (s) 1.07
Current children cumulated vsize (KiB) 867536

[startup+1.30236 s]
/proc/loadavg: 1.99 1.99 1.99 3/90 6802
/proc/meminfo: memFree=1618256/2055920 swapFree=4180732/4192956
[pid=6789] ppid=6787 vsize=867536 CPUtime=1.27
/proc/6789/stat : 6789 (java) S 6787 6789 6662 0 -1 0 20377 285 1 0 116 11 0 0 18 0 9 0 2006904978 888356864 14903 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/6789/statm: 216884 14903 2632 9 0 211390 0
[pid=6789/tid=6791] ppid=6787 vsize=867536 CPUtime=0.98
/proc/6789/task/6791/stat : 6791 (java) R 6787 6789 6662 0 -1 64 16148 285 1 0 90 8 0 0 20 0 9 0 2006904979 888356864 14903 996147200 134512640 134550740 4294955968 18446744073709551615 4126698648 0 4 0 16800975 0 0 0 -1 1 0 0
[pid=6789/tid=6792] ppid=6787 vsize=867536 CPUtime=0.04
/proc/6789/task/6792/stat : 6792 (java) S 6787 6789 6662 0 -1 64 2680 285 0 0 4 0 0 0 17 0 9 0 2006904980 888356864 14903 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 0 0 16800975 0 0 0 -1 1 0 0
[pid=6789/tid=6793] ppid=6787 vsize=867536 CPUtime=0
/proc/6789/task/6793/stat : 6793 (java) S 6787 6789 6662 0 -1 64 16 285 0 0 0 0 0 0 16 0 9 0 2006904980 888356864 14903 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 1 0 0
[pid=6789/tid=6794] ppid=6787 vsize=867536 CPUtime=0
/proc/6789/task/6794/stat : 6794 (java) S 6787 6789 6662 0 -1 64 11 285 0 0 0 0 0 0 16 0 9 0 2006904980 888356864 14903 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 1 0 0
[pid=6789/tid=6795] ppid=6787 vsize=867536 CPUtime=0
/proc/6789/task/6795/stat : 6795 (java) S 6787 6789 6662 0 -1 64 1 285 0 0 0 0 0 0 24 0 9 0 2006904982 888356864 14903 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
[pid=6789/tid=6796] ppid=6787 vsize=867536 CPUtime=0.21
/proc/6789/task/6796/stat : 6796 (java) S 6787 6789 6662 0 -1 64 715 285 0 0 21 0 0 0 15 0 9 0 2006904982 888356864 14903 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 1 0 0
[pid=6789/tid=6797] ppid=6787 vsize=867536 CPUtime=0
/proc/6789/task/6797/stat : 6797 (java) S 6787 6789 6662 0 -1 64 1 285 0 0 0 0 0 0 25 0 9 0 2006904982 888356864 14903 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
[pid=6789/tid=6798] ppid=6787 vsize=867536 CPUtime=0
/proc/6789/task/6798/stat : 6798 (java) S 6787 6789 6662 0 -1 64 4 285 0 0 0 0 0 0 15 0 9 0 2006904982 888356864 14903 996147200 134512640 134550740 4294955968 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
Current children cumulated CPU time (s) 1.27
Current children cumulated vsize (KiB) 867536

[startup+1.40251 s]
/proc/loadavg: 1.99 1.99 1.99 3/90 6802
/proc/meminfo: memFree=1618256/2055920 swapFree=4180732/4192956
[pid=6789] ppid=6787 vsize=0 CPUtime=1.37
/proc/6789/stat : 6789 (java) Z 6787 6789 6662 0 -1 12 21420 285 1 0 125 12 0 0 16 0 2 0 2006904978 0 0 996147200 0 0 0 0 0 0 0 0 16800975 18446744073709551615 0 0 17 1 0 0
/proc/6789/statm: 0 0 0 0 0 0 0
Current children cumulated CPU time (s) 1.37
Current children cumulated vsize (KiB) 0

Child status: 0
Real time (s): 1.40948
CPU time (s): 1.39379
CPU user time (s): 1.25881
CPU system time (s): 0.134979
CPU usage (%): 98.8867
Max. virtual memory (cumulated for all children) (KiB): 867536

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.25881
system time used= 0.134979
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 21705
page faults= 1
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 1029
involuntary context switches= 1064

runsolver used 0.007998 second user time and 0.009998 second system time

The end

Launcher Data (download as text)

Begin job on node57 at 2008-07-05 19:35:35
IDJOB=1094302
IDBENCH=58776
IDSOLVER=363
FILE ID=node57/1094302-1215279335
PBS_JOBID= 7882308
Free space on /tmp= 66548 MiB

SOLVER NAME= Abscon 112v4 AC
BENCH NAME= CPAI08/csp/os-taillard-7/normalized-os-taillard-7-105-8.xml
COMMAND LINE= java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -cp abscon112V4.jar abscon.Resolution mac.xml 1 XSax BENCHNAME
RUNSOLVER COMMAND LINE= /home/evaluation/evaluation/pub/bin/runsolver --timestamp -w /tmp/evaluation-result-1094302-1215279335/watcher-1094302-1215279335 -o /tmp/evaluation-result-1094302-1215279335/solver-1094302-1215279335 -C 1800 -W 2200 -M 900 --output-limit 1,15  java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -cp abscon112V4.jar abscon.Resolution mac.xml 1 XSax HOME/instance-1094302-1215279335.xml

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 900 MiB

MD5SUM BENCH= 6477a09488ded448bf0a5b794999d82e
RANDOM SEED=543487033

node57.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.258
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5914.62
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.258
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1653624 kB
Buffers:         73928 kB
Cached:         228304 kB
SwapCached:       6148 kB
Active:         222296 kB
Inactive:       124916 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1653624 kB
SwapTotal:     4192956 kB
SwapFree:      4180732 kB
Dirty:            2064 kB
Writeback:           0 kB
Mapped:          61032 kB
Slab:            40200 kB
Committed_AS:  4142396 kB
PageTables:       1948 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66548 MiB
End job on node57 at 2008-07-05 19:35:37