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 in four parts:
  1. 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 provide some useful information on the computer.
  2. 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 !
  3. 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 1200 seconds. 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 1230 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (900Mb).
    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.
  4. 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.

General information on the benchmark

Namemps-v2-20-10/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-scagr25.opb
MD5SUMbe61473a6f4c61e5d13e35f131b73ac6
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 14250
Biggest coefficient in the objective function 35540854374400
Number of bits for the biggest coefficient in the objective function 46
Sum of the numbers in the objective function 4668575759312850
Number of bits of the sum of numbers in the objective function 53
Biggest number in a constraint 35540854374400
Number of bits of the biggest number in a constraint 46
Biggest sum of numbers in a constraint 4668575759312850
Number of bits of the biggest sum of numbers53
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.687895
Number of variables15000
Total number of constraints471
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints471
Minimum length of a constraint30
Maximum length of a constraint300

Trace number 9907

Launcher Data

LAUNCH ON wulflinc14 THE 2005-09-23 16:09:02 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8661 boxname=wulflinc14 idbench=457 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  be61473a6f4c61e5d13e35f131b73ac6  /oldhome/oroussel/tmp/wulflinc14/normalized-mps-v2-20-10-scagr25.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc14/normalized-mps-v2-20-10-scagr25.opb
IDLAUNCH: 8661
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.058
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 888.83

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.058
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        989428 kB
Buffers:          1908 kB
Cached:          25904 kB
SwapCached:          0 kB
Active:          18152 kB
Inactive:        12552 kB
HighTotal:      131008 kB
HighFree:       100884 kB
LowTotal:       903652 kB
LowFree:        888544 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6984 kB
Slab:             8856 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 16:10:45 (client local time) WITH STATUS 0 IN 100.869 SECONDS
stats: 8661 7 100.869 0

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
s UNKNOWN

Watcher Data

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGTERM then SIGKILL): 921600 Kb
Enforcing VSIZE limit: 994918400 bytes
Current StackSize limit: 67108864 bytes
Raw data (/proc/7777/stat): 7777 (pb2sat) R 7776 7777 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21511830 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/7777/statm): 373 2 364 364 0 9 0
[pid=7777] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc14/normalized-mps-v2-20-10-scagr25.opb

[startup+10.0019 s]
Raw data (loadavg): 0.87 0.95 0.98 2/55 7777
Raw data (/proc/7777/stat): 7777 (pb2sat) R 7776 7777 4060 0 -1 0 24921 0 0 0 939 57 0 0 25 0 1 0 21511830 76095488 13794 4294967295 134512640 135987407 3221224560 3221135140 134865147 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7777/statm): 18578 13794 364 364 0 18214 0
[pid=7777] vsize: 74312
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 74312

[startup+20.0026 s]
Raw data (loadavg): 0.89 0.95 0.98 2/55 7777
Raw data (/proc/7777/stat): 7777 (pb2sat) R 7776 7777 4060 0 -1 0 56230 0 0 0 1868 125 0 0 25 0 1 0 21511830 180715520 33883 4294967295 134512640 135987407 3221224560 3221164332 134892392 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/7777/statm): 44120 33883 364 364 0 43756 0
[pid=7777] vsize: 176480
Current children cumulated CPU time (s) 19.93
Current children cumulated vsize (Kb) 176480

[startup+30.0022 s]
Raw data (loadavg): 0.91 0.95 0.98 2/55 7777
Raw data (/proc/7777/stat): 7777 (pb2sat) R 7776 7777 4060 0 -1 0 99906 0 0 0 2773 217 0 0 25 0 1 0 21511830 314347520 55350 4294967295 134512640 135987407 3221224560 3221185424 134887887 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/7777/statm): 76745 55350 364 364 0 76381 0
[pid=7777] vsize: 306980
Current children cumulated CPU time (s) 29.9
Current children cumulated vsize (Kb) 306980

[startup+40.0029 s]
Raw data (loadavg): 0.92 0.96 0.98 2/55 7777
Raw data (/proc/7777/stat): 7777 (pb2sat) R 7776 7777 4060 0 -1 0 116582 0 0 0 3732 257 0 0 25 0 1 0 21511830 369393664 71821 4294967295 134512640 135987407 3221224560 3221132176 134856505 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/7777/statm): 90184 71821 364 364 0 89820 0
[pid=7777] vsize: 360736
Current children cumulated CPU time (s) 39.89
Current children cumulated vsize (Kb) 360736

[startup+50.0026 s]
Raw data (loadavg): 0.93 0.96 0.98 2/55 7777
Raw data (/proc/7777/stat): 7777 (pb2sat) R 7776 7777 4060 0 -1 0 130316 0 0 0 4702 286 0 0 25 0 1 0 21511830 369799168 85310 4294967295 134512640 135987407 3221224560 3221165088 134556273 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/7777/statm): 90283 85310 364 364 0 89919 0
[pid=7777] vsize: 361132
Current children cumulated CPU time (s) 49.88
Current children cumulated vsize (Kb) 361132

[startup+60.0033 s]
Raw data (loadavg): 0.94 0.96 0.98 2/55 7777
Raw data (/proc/7777/stat): 7777 (pb2sat) R 7776 7777 4060 0 -1 0 193887 0 0 0 5564 421 0 0 25 0 1 0 21511830 597999616 104723 4294967295 134512640 135987407 3221224560 3221179264 134878060 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/7777/statm): 145996 104723 364 364 0 145632 0
[pid=7777] vsize: 583984
Current children cumulated CPU time (s) 59.85
Current children cumulated vsize (Kb) 583984

[startup+70.0029 s]
Raw data (loadavg): 0.95 0.96 0.98 2/55 7777
Raw data (/proc/7777/stat): 7777 (pb2sat) R 7776 7777 4060 0 -1 0 207566 0 0 0 6535 449 0 0 25 0 1 0 21511830 638717952 118188 4294967295 134512640 135987407 3221224560 3221210464 134856702 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/7777/statm): 155937 118189 364 364 0 155573 0
[pid=7777] vsize: 623748
Current children cumulated CPU time (s) 69.84
Current children cumulated vsize (Kb) 623748

[startup+80.0026 s]
Raw data (loadavg): 0.96 0.96 0.98 2/55 7777
Raw data (/proc/7777/stat): 7777 (pb2sat) R 7776 7777 4060 0 -1 0 220718 0 0 0 7506 478 0 0 25 0 1 0 21511830 640880640 131112 4294967295 134512640 135987407 3221224560 3221173000 134637789 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7777/statm): 156465 131112 364 364 0 156101 0
[pid=7777] vsize: 625860
Current children cumulated CPU time (s) 79.84
Current children cumulated vsize (Kb) 625860

[startup+90.0033 s]
Raw data (loadavg): 0.96 0.96 0.98 2/55 7777
Raw data (/proc/7777/stat): 7777 (pb2sat) R 7776 7777 4060 0 -1 0 234733 0 0 0 8475 510 0 0 25 0 1 0 21511830 641150976 144875 4294967295 134512640 135987407 3221224560 3221148896 134855001 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7777/statm): 156531 144875 364 364 0 156167 0
[pid=7777] vsize: 626124
Current children cumulated CPU time (s) 89.85
Current children cumulated vsize (Kb) 626124

[startup+100.004 s]
Raw data (loadavg): 0.97 0.96 0.98 2/55 7777
Raw data (/proc/7777/stat): 7777 (pb2sat) R 7776 7777 4060 0 -1 0 247387 0 0 0 9447 537 0 0 25 0 1 0 21511830 697430016 157328 4294967295 134512640 135987407 3221224560 3221175896 135486713 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7777/statm): 170271 157328 364 364 0 169907 0
[pid=7777] vsize: 681084
Current children cumulated CPU time (s) 99.84
Current children cumulated vsize (Kb) 681084



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+100.682 s]
Raw data (loadavg): 0.97 0.96 0.98 1/55 7777
Raw data (/proc/7777/stat): 7777 (pb2sat) T 7776 7777 4060 0 -1 0 248662 0 0 0 9512 540 0 0 25 0 1 0 21511830 983998464 158586 4294967295 134512640 135987407 3221224560 3221180704 135544035 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/7777/statm): 240234 158586 364 364 0 239870 0
[pid=7777] vsize: 960936
Current children cumulated CPU time (s) 100.52
Current children cumulated vsize (Kb) 960936

Sending SIGTERM to -7777
Sleeping 2 seconds
Sending SIGKILL to -7777
One traced child (pid=7777) ended because it received signal 9 (SIGKILL)
All traced children have exited ! Game is over.

Child ended because it received signal 9 (SIGKILL)
Real time (s): 103.011
CPU time (s): 100.869
CPU user time (s): 95.1425
CPU system time (s): 5.72613
CPU usage (%): 97.9202
Max. virtual memory (cumulated for all children) (Kb): 960936

Verifier Data

ERROR: no interpretation found !