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-greenbeb.opb
MD5SUM376d4643e7856d57cc9cab321f965d04
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
Satisfiable
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 14882
Biggest coefficient in the objective function 536870912000000
Number of bits for the biggest coefficient in the objective function 49
Sum of the numbers in the objective function 12491747892670016
Number of bits of the sum of numbers in the objective function 54
Biggest number in a constraint 536870912000000
Number of bits of the biggest number in a constraint 49
Biggest sum of numbers in a constraint 24454743822989865
Number of bits of the biggest sum of numbers55
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables155020
Total number of constraints2676
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 constraints2676
Minimum length of a constraint11
Maximum length of a constraint7172

Trace number 9887

Launcher Data

LAUNCH ON wulflinc6 THE 2005-09-23 16:06:44 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8640 boxname=wulflinc6 idbench=436 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  376d4643e7856d57cc9cab321f965d04  /oldhome/oroussel/tmp/wulflinc6/normalized-mps-v2-20-10-greenbeb.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc6/normalized-mps-v2-20-10-greenbeb.opb
IDLAUNCH: 8640
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.158
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		: 451.158
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:        904216 kB
Buffers:         12656 kB
Cached:         100156 kB
SwapCached:          0 kB
Active:          66360 kB
Inactive:        49368 kB
HighTotal:      131008 kB
HighFree:        27356 kB
LowTotal:       903652 kB
LowFree:        876860 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              32 kB
Writeback:           0 kB
Mapped:           6984 kB
Slab:             9100 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 16:08:26 (client local time) WITH STATUS 0 IN 99.2589 SECONDS
stats: 8640 7 99.2589 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/7703/stat): 7703 (pb2sat) R 7702 7703 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21514693 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/7703/statm): 373 2 364 364 0 9 0
[pid=7703] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc6/normalized-mps-v2-20-10-greenbeb.opb

[startup+10.0022 s]
Raw data (loadavg): 0.94 0.97 0.98 2/55 7703
Raw data (/proc/7703/stat): 7703 (pb2sat) R 7702 7703 4060 0 -1 0 17278 0 0 0 955 43 0 0 25 0 1 0 21514693 66633728 11629 4294967295 134512640 135987407 3221224560 3221147600 134856473 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/7703/statm): 16268 11632 364 364 0 15904 0
[pid=7703] vsize: 65072
Current children cumulated CPU time (s) 9.98
Current children cumulated vsize (Kb) 65072

[startup+20.003 s]
Raw data (loadavg): 0.95 0.97 0.98 2/55 7703
Raw data (/proc/7703/stat): 7703 (pb2sat) R 7702 7703 4060 0 -1 0 50499 0 0 0 1878 117 0 0 25 0 1 0 21514693 165453824 28173 4294967295 134512640 135987407 3221224560 3221204240 134887796 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7703/statm): 40394 28173 364 364 0 40030 0
[pid=7703] vsize: 161576
Current children cumulated CPU time (s) 19.95
Current children cumulated vsize (Kb) 161576

[startup+30.0037 s]
Raw data (loadavg): 0.96 0.97 0.98 2/55 7703
Raw data (/proc/7703/stat): 7703 (pb2sat) R 7702 7703 4060 0 -1 0 82986 0 0 0 2809 183 0 0 25 0 1 0 21514693 251355136 50715 4294967295 134512640 135987407 3221224560 3221214464 134856505 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/7703/statm): 61366 50715 364 364 0 61002 0
[pid=7703] vsize: 245464
Current children cumulated CPU time (s) 29.92
Current children cumulated vsize (Kb) 245464

[startup+40.0044 s]
Raw data (loadavg): 0.96 0.97 0.98 2/55 7703
Raw data (/proc/7703/stat): 7703 (pb2sat) R 7702 7703 4060 0 -1 0 106552 0 0 0 3760 231 0 0 25 0 1 0 21514693 338227200 61784 4294967295 134512640 135987407 3221224560 3221209840 134878526 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/7703/statm): 82575 61784 364 364 0 82211 0
[pid=7703] vsize: 330300
Current children cumulated CPU time (s) 39.91
Current children cumulated vsize (Kb) 330300

[startup+50.0042 s]
Raw data (loadavg): 0.97 0.97 0.98 2/55 7703
Raw data (/proc/7703/stat): 7703 (pb2sat) R 7702 7703 4060 0 -1 0 120116 0 0 0 4732 259 0 0 25 0 1 0 21514693 342872064 75102 4294967295 134512640 135987407 3221224560 3221208464 134878660 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/7703/statm): 83709 75102 364 364 0 83345 0
[pid=7703] vsize: 334836
Current children cumulated CPU time (s) 49.91
Current children cumulated vsize (Kb) 334836

[startup+60.0039 s]
Raw data (loadavg): 0.97 0.97 0.98 2/55 7703
Raw data (/proc/7703/stat): 7703 (pb2sat) R 7702 7703 4060 0 -1 0 159973 0 0 0 5645 340 0 0 25 0 1 0 21514693 470208512 95349 4294967295 134512640 135987407 3221224560 3221201920 134887887 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/7703/statm): 114797 95350 364 364 0 114433 0
[pid=7703] vsize: 459188
Current children cumulated CPU time (s) 59.85
Current children cumulated vsize (Kb) 459188

[startup+70.0037 s]
Raw data (loadavg): 0.98 0.97 0.98 2/55 7703
Raw data (/proc/7703/stat): 7703 (pb2sat) R 7702 7703 4060 0 -1 0 196459 0 0 0 6569 416 0 0 25 0 1 0 21514693 574234624 107040 4294967295 134512640 135987407 3221224560 3221211856 134878060 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/7703/statm): 140194 107041 364 364 0 139830 0
[pid=7703] vsize: 560776
Current children cumulated CPU time (s) 69.85
Current children cumulated vsize (Kb) 560776

[startup+80.0045 s]
Raw data (loadavg): 0.98 0.97 0.98 2/55 7703
Raw data (/proc/7703/stat): 7703 (pb2sat) R 7702 7703 4060 0 -1 0 207624 0 0 0 7548 437 0 0 25 0 1 0 21514693 610332672 118000 4294967295 134512640 135987407 3221224560 3221184892 135482102 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7703/statm): 149007 118000 364 364 0 148643 0
[pid=7703] vsize: 596028
Current children cumulated CPU time (s) 79.85
Current children cumulated vsize (Kb) 596028

[startup+90.0042 s]
Raw data (loadavg): 0.98 0.97 0.98 2/55 7703
Raw data (/proc/7703/stat): 7703 (pb2sat) R 7702 7703 4060 0 -1 0 224524 0 0 0 8513 471 0 0 25 0 1 0 21514693 626352128 134656 4294967295 134512640 135987407 3221224560 3221188364 134636987 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7703/statm): 152918 134656 364 364 0 152554 0
[pid=7703] vsize: 611672
Current children cumulated CPU time (s) 89.84
Current children cumulated vsize (Kb) 611672



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+99.0804 s]
Raw data (loadavg): 0.98 0.97 0.98 1/55 7703
Raw data (/proc/7703/stat): 7703 (pb2sat) T 7702 7703 4060 0 -1 0 246440 0 0 0 9374 515 0 0 25 0 1 0 21514693 943771648 156203 4294967295 134512640 135987407 3221224560 3221189996 135635874 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/7703/statm): 230413 156203 364 364 0 230049 0
[pid=7703] vsize: 921652
Current children cumulated CPU time (s) 98.89
Current children cumulated vsize (Kb) 921652

Sending SIGTERM to -7703
Sleeping 2 seconds

[startup+100.004 s]
Raw data (loadavg): 0.98 0.97 0.98 1/56 7704
Raw data (/proc/7703/stat): 7703 (pb2sat) S 7702 7703 4060 0 -1 0 246441 0 0 0 9378 515 0 0 25 0 1 0 21514693 943771648 156204 4294967295 134512640 135987407 3221224560 3221188312 135549753 0 16384 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7703/statm): 230413 156204 364 364 0 230049 0
[pid=7703] vsize: 921652
Current children cumulated CPU time (s) 98.93
Current children cumulated vsize (Kb) 921652
Sending SIGKILL to -7703
One traced child (pid=7703) 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): 101.406
CPU time (s): 99.2589
CPU user time (s): 93.7847
CPU system time (s): 5.47417
CPU usage (%): 97.8826
Max. virtual memory (cumulated for all children) (Kb): 921652

Verifier Data

ERROR: no interpretation found !