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-seba.opb
MD5SUM41b5898e0f1b65f739b9a89af7596ef6
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 16290734500
Optimality of the best value was proved NO
Number of terms in the objective function 7565
Biggest coefficient in the objective function 258342282854400
Number of bits for the biggest coefficient in the objective function 48
Sum of the numbers in the objective function 4664562894591719
Number of bits of the sum of numbers in the objective function 53
Biggest number in a constraint 258342282854400
Number of bits of the biggest number in a constraint 48
Biggest sum of numbers in a constraint 4664562894591719
Number of bits of the biggest sum of numbers53
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1202.26
Number of variables23376
Total number of constraints1029
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 constraints1029
Minimum length of a constraint10
Maximum length of a constraint496

Trace number 9918

Launcher Data

LAUNCH ON wulflinc8 THE 2005-09-23 16:11:02 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8673 boxname=wulflinc8 idbench=469 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  41b5898e0f1b65f739b9a89af7596ef6  /oldhome/oroussel/tmp/wulflinc8/normalized-mps-v2-20-10-seba.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc8/normalized-mps-v2-20-10-seba.opb
IDLAUNCH: 8673
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.023
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		: 451.023
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	: 899.07

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        932560 kB
Buffers:         12868 kB
Cached:          71724 kB
SwapCached:          0 kB
Active:          48040 kB
Inactive:        39444 kB
HighTotal:      131008 kB
HighFree:        55300 kB
LowTotal:       903652 kB
LowFree:        877260 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6976 kB
Slab:             9004 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 16:12:37 (client local time) WITH STATUS 0 IN 92.8799 SECONDS
stats: 8673 7 92.8799 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/8641/stat): 8641 (pb2sat) R 8640 8641 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21538824 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/8641/statm): 373 2 364 364 0 9 0
[pid=8641] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc8/normalized-mps-v2-20-10-seba.opb

[startup+10.0014 s]
Raw data (loadavg): 0.93 0.96 0.96 2/55 8641
Raw data (/proc/8641/stat): 8641 (pb2sat) R 8640 8641 4060 0 -1 0 26692 0 0 0 931 65 0 0 25 0 1 0 21538824 81371136 15556 4294967295 134512640 135987407 3221224560 3221152704 134877884 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8641/statm): 19866 15556 364 364 0 19502 0
[pid=8641] vsize: 79464
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 79464

[startup+20.0021 s]
Raw data (loadavg): 0.94 0.96 0.96 2/55 8641
Raw data (/proc/8641/stat): 8641 (pb2sat) R 8640 8641 4060 0 -1 0 55748 0 0 0 1866 129 0 0 25 0 1 0 21538824 162598912 33366 4294967295 134512640 135987407 3221224560 3221136352 134559106 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8641/statm): 39697 33366 364 364 0 39333 0
[pid=8641] vsize: 158788
Current children cumulated CPU time (s) 19.95
Current children cumulated vsize (Kb) 158788

[startup+30.0029 s]
Raw data (loadavg): 0.95 0.96 0.96 2/55 8641
Raw data (/proc/8641/stat): 8641 (pb2sat) R 8640 8641 4060 0 -1 0 98600 0 0 0 2771 220 0 0 25 0 1 0 21538824 328298496 54019 4294967295 134512640 135987407 3221224560 3221121376 134877726 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8641/statm): 80151 54019 364 364 0 79787 0
[pid=8641] vsize: 320604
Current children cumulated CPU time (s) 29.91
Current children cumulated vsize (Kb) 320604

[startup+40.0037 s]
Raw data (loadavg): 0.96 0.96 0.96 2/55 8641
Raw data (/proc/8641/stat): 8641 (pb2sat) R 8640 8641 4060 0 -1 0 113027 0 0 0 3740 250 0 0 25 0 1 0 21538824 332218368 68203 4294967295 134512640 135987407 3221224560 3221128396 135499903 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8641/statm): 81108 68203 364 364 0 80744 0
[pid=8641] vsize: 324432
Current children cumulated CPU time (s) 39.9
Current children cumulated vsize (Kb) 324432

[startup+50.0045 s]
Raw data (loadavg): 0.96 0.96 0.96 2/55 8641
Raw data (/proc/8641/stat): 8641 (pb2sat) R 8640 8641 4060 0 -1 0 154895 0 0 0 4652 335 0 0 25 0 1 0 21538824 461107200 90446 4294967295 134512640 135987407 3221224560 3221179788 135484800 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8641/statm): 112575 90446 364 364 0 112211 0
[pid=8641] vsize: 450300
Current children cumulated CPU time (s) 49.87
Current children cumulated vsize (Kb) 450300

[startup+60.0043 s]
Raw data (loadavg): 0.97 0.96 0.96 2/55 8641
Raw data (/proc/8641/stat): 8641 (pb2sat) R 8640 8641 4060 0 -1 0 191148 0 0 0 5570 416 0 0 25 0 1 0 21538824 598028288 101924 4294967295 134512640 135987407 3221224560 3221170768 134877628 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8641/statm): 146003 101924 364 364 0 145639 0
[pid=8641] vsize: 584012
Current children cumulated CPU time (s) 59.86
Current children cumulated vsize (Kb) 584012

[startup+70.0061 s]
Raw data (loadavg): 0.97 0.97 0.96 2/55 8641
Raw data (/proc/8641/stat): 8641 (pb2sat) R 8640 8641 4060 0 -1 0 205271 0 0 0 6538 448 0 0 25 0 1 0 21538824 600190976 115803 4294967295 134512640 135987407 3221224560 3221149952 134856458 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8641/statm): 146531 115803 364 364 0 146167 0
[pid=8641] vsize: 586124
Current children cumulated CPU time (s) 69.86
Current children cumulated vsize (Kb) 586124

[startup+80.0068 s]
Raw data (loadavg): 0.98 0.97 0.96 2/55 8641
Raw data (/proc/8641/stat): 8641 (pb2sat) R 8640 8641 4060 0 -1 0 222073 0 0 0 7496 489 0 0 25 0 1 0 21538824 604786688 132323 4294967295 134512640 135987407 3221224560 3221117460 135477864 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8641/statm): 147653 132323 364 364 0 147289 0
[pid=8641] vsize: 590612
Current children cumulated CPU time (s) 79.85
Current children cumulated vsize (Kb) 590612

[startup+90.0076 s]
Raw data (loadavg): 0.98 0.97 0.96 2/55 8641
Raw data (/proc/8641/stat): 8641 (pb2sat) R 8640 8641 4060 0 -1 0 235443 0 0 0 8463 522 0 0 25 0 1 0 21538824 659443712 145473 4294967295 134512640 135987407 3221224560 3221158492 134637002 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8641/statm): 160997 145473 364 364 0 160633 0
[pid=8641] vsize: 643988
Current children cumulated CPU time (s) 89.85
Current children cumulated vsize (Kb) 643988



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+92.7067 s]
Raw data (loadavg): 0.98 0.97 0.96 1/55 8641
Raw data (/proc/8641/stat): 8641 (pb2sat) T 8640 8641 4060 0 -1 0 239811 0 0 0 8720 535 0 0 25 0 1 0 21538824 946147328 149768 4294967295 134512640 135987407 3221224560 3221189440 135544035 0 0 5 16384 3222434794 0 0 17 0 0 0
Raw data (/proc/8641/statm): 230993 149768 364 364 0 230629 0
[pid=8641] vsize: 923972
Current children cumulated CPU time (s) 92.55
Current children cumulated vsize (Kb) 923972

Sending SIGTERM to -8641
Sleeping 2 seconds
Sending SIGKILL to -8641
One traced child (pid=8641) 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): 95.0223
CPU time (s): 92.8799
CPU user time (s): 87.2157
CPU system time (s): 5.66414
CPU usage (%): 97.7453
Max. virtual memory (cumulated for all children) (Kb): 923972

Verifier Data

ERROR: no interpretation found !