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-v2-13-7/ftp.netlib.org/lp/data/normalized-mps-v2-13-7-25fv47.opb
MD5SUMc9f866c0690dc1af70eb2575fc6ba22f
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 12780
Biggest coefficient in the objective function 524288000000
Number of bits for the biggest coefficient in the objective function 39
Sum of the numbers in the objective function 10374607341450
Number of bits of the sum of numbers in the objective function 44
Biggest number in a constraint 125278616027136
Number of bits of the biggest number in a constraint 47
Biggest sum of numbers in a constraint 793896153991050
Number of bits of the biggest sum of numbers50
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark21.1138
Number of variables31420
Total number of constraints820
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 constraints820
Minimum length of a constraint20
Maximum length of a constraint6800

Trace number 10325

Launcher Data

LAUNCH ON wulflinc2 THE 2005-09-23 17:50:59 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=9074 boxname=wulflinc2 idbench=870 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  c9f866c0690dc1af70eb2575fc6ba22f  /oldhome/oroussel/tmp/wulflinc2/normalized-mps-v2-13-7-25fv47.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc2/normalized-mps-v2-13-7-25fv47.opb
IDLAUNCH: 9074
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.261
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		: 451.261
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:        889604 kB
Buffers:         17240 kB
Cached:         107812 kB
SwapCached:          0 kB
Active:          50264 kB
Inactive:        77728 kB
HighTotal:      131008 kB
HighFree:        27048 kB
LowTotal:       903652 kB
LowFree:        862556 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            11480 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 17:52:41 (client local time) WITH STATUS 0 IN 99.6109 SECONDS
stats: 9074 7 99.6109 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/10560/stat): 10560 (pb2sat) R 10559 10560 4070 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 22144152 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/10560/statm): 373 2 364 364 0 9 0
[pid=10560] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc2/normalized-mps-v2-13-7-25fv47.opb

[startup+10.0022 s]
Raw data (loadavg): 0.93 0.95 0.95 2/55 10560
Raw data (/proc/10560/stat): 10560 (pb2sat) R 10559 10560 4070 0 -1 0 24982 0 0 0 945 51 0 0 25 0 1 0 22144152 77946880 13858 4294967295 134512640 135987407 3221224560 3221191724 134637002 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10560/statm): 19030 13858 364 364 0 18666 0
[pid=10560] vsize: 76120
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 76120

[startup+20.0029 s]
Raw data (loadavg): 0.94 0.95 0.95 2/55 10560
Raw data (/proc/10560/stat): 10560 (pb2sat) R 10559 10560 4070 0 -1 0 54914 0 0 0 1880 114 0 0 25 0 1 0 22144152 177295360 32565 4294967295 134512640 135987407 3221224560 3221212152 135487877 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10560/statm): 43285 32565 364 364 0 42921 0
[pid=10560] vsize: 173140
Current children cumulated CPU time (s) 19.94
Current children cumulated vsize (Kb) 173140

[startup+30.0036 s]
Raw data (loadavg): 0.95 0.95 0.95 2/55 10560
Raw data (/proc/10560/stat): 10560 (pb2sat) R 10559 10560 4070 0 -1 0 86647 0 0 0 2818 173 0 0 25 0 1 0 22144152 343830528 54372 4294967295 134512640 135987407 3221224560 3221211664 134887487 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10560/statm): 83943 54372 364 364 0 83579 0
[pid=10560] vsize: 335772
Current children cumulated CPU time (s) 29.91
Current children cumulated vsize (Kb) 335772

[startup+40.0043 s]
Raw data (loadavg): 0.96 0.95 0.95 2/55 10560
Raw data (/proc/10560/stat): 10560 (pb2sat) R 10559 10560 4070 0 -1 0 106860 0 0 0 3771 220 0 0 25 0 1 0 22144152 329617408 62074 4294967295 134512640 135987407 3221224560 3221206220 134637842 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10560/statm): 80473 62074 364 364 0 80109 0
[pid=10560] vsize: 321892
Current children cumulated CPU time (s) 39.91
Current children cumulated vsize (Kb) 321892

[startup+50.005 s]
Raw data (loadavg): 0.96 0.95 0.95 2/55 10560
Raw data (/proc/10560/stat): 10560 (pb2sat) R 10559 10560 4070 0 -1 0 129582 0 0 0 4723 266 0 0 25 0 1 0 22144152 491962368 84261 4294967295 134512640 135987407 3221224560 3221210732 135500012 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10560/statm): 120108 84261 364 364 0 119744 0
[pid=10560] vsize: 480432
Current children cumulated CPU time (s) 49.89
Current children cumulated vsize (Kb) 480432

[startup+60.0057 s]
Raw data (loadavg): 0.97 0.95 0.95 2/55 10560
Raw data (/proc/10560/stat): 10560 (pb2sat) R 10559 10560 4070 0 -1 0 185138 0 0 0 5605 381 0 0 25 0 1 0 22144152 562143232 95937 4294967295 134512640 135987407 3221224560 3221191292 135499910 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10560/statm): 137242 95937 364 364 0 136878 0
[pid=10560] vsize: 548968
Current children cumulated CPU time (s) 59.86
Current children cumulated vsize (Kb) 548968

[startup+70.0064 s]
Raw data (loadavg): 0.97 0.95 0.95 2/55 10560
Raw data (/proc/10560/stat): 10560 (pb2sat) R 10559 10560 4070 0 -1 0 197933 0 0 0 6576 410 0 0 25 0 1 0 22144152 599638016 108516 4294967295 134512640 135987407 3221224560 3221200816 134537552 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10560/statm): 146396 108516 364 364 0 146032 0
[pid=10560] vsize: 585584
Current children cumulated CPU time (s) 69.86
Current children cumulated vsize (Kb) 585584

[startup+80.0071 s]
Raw data (loadavg): 0.98 0.96 0.95 2/55 10560
Raw data (/proc/10560/stat): 10560 (pb2sat) R 10559 10560 4070 0 -1 0 213051 0 0 0 7544 442 0 0 25 0 1 0 22144152 605044736 123384 4294967295 134512640 135987407 3221224560 3221212428 135499874 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10560/statm): 147716 123384 364 364 0 147352 0
[pid=10560] vsize: 590864
Current children cumulated CPU time (s) 79.86
Current children cumulated vsize (Kb) 590864

[startup+90.0078 s]
Raw data (loadavg): 0.98 0.96 0.95 2/55 10560
Raw data (/proc/10560/stat): 10560 (pb2sat) R 10559 10560 4070 0 -1 0 227325 0 0 0 8512 472 0 0 25 0 1 0 22144152 611041280 137416 4294967295 134512640 135987407 3221224560 3221152108 134637002 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10560/statm): 149180 137416 364 364 0 148816 0
[pid=10560] vsize: 596720
Current children cumulated CPU time (s) 89.84
Current children cumulated vsize (Kb) 596720



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+99.4494 s]
Raw data (loadavg): 0.98 0.96 0.95 1/55 10560
Raw data (/proc/10560/stat): 10560 (pb2sat) T 10559 10560 4070 0 -1 0 241516 0 0 0 9426 501 0 0 25 0 1 0 22144152 966901760 151440 4294967295 134512640 135987407 3221224560 3221150832 135544035 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/10560/statm): 236060 151440 364 364 0 235696 0
[pid=10560] vsize: 944240
Current children cumulated CPU time (s) 99.27
Current children cumulated vsize (Kb) 944240

Sending SIGTERM to -10560
Sleeping 2 seconds

[startup+100.009 s]
Raw data (loadavg): 0.90 0.94 0.95 1/56 10561
Raw data (/proc/10560/stat): 10560 (pb2sat) S 10559 10560 4070 0 -1 0 241517 0 0 0 9428 501 0 0 25 0 1 0 22144152 966901760 151441 4294967295 134512640 135987407 3221224560 3221149288 135549753 0 16384 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10560/statm): 236060 151441 364 364 0 235696 0
[pid=10560] vsize: 944240
Current children cumulated CPU time (s) 99.29
Current children cumulated vsize (Kb) 944240
Sending SIGKILL to -10560
One traced child (pid=10560) 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): 101.767
CPU time (s): 99.6109
CPU user time (s): 94.2847
CPU system time (s): 5.32619
CPU usage (%): 97.8816
Max. virtual memory (cumulated for all children) (Kb): 944240

Verifier Data

ERROR: no interpretation found !