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-brandy.opb
MD5SUMebc4ba4a34e7e59de4a64f55746baa39
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 60
Biggest coefficient in the objective function 536870912
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 2147483646
Number of bits of the sum of numbers in the objective function 31
Biggest number in a constraint 10936060477440
Number of bits of the biggest number in a constraint 44
Biggest sum of numbers in a constraint 138160507849056
Number of bits of the biggest sum of numbers47
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.97885
Number of variables7470
Total number of constraints182
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 constraints182
Minimum length of a constraint30
Maximum length of a constraint3540

Trace number 9866

Launcher Data

LAUNCH ON wulflinc21 THE 2005-09-23 16:02:38 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8620 boxname=wulflinc21 idbench=416 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  ebc4ba4a34e7e59de4a64f55746baa39  /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-brandy.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-brandy.opb
IDLAUNCH: 8620
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.188
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	: 3
cpu MHz		: 451.188
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:        933096 kB
Buffers:         13464 kB
Cached:          69972 kB
SwapCached:          0 kB
Active:          46804 kB
Inactive:        39524 kB
HighTotal:      131008 kB
HighFree:        56756 kB
LowTotal:       903652 kB
LowFree:        876340 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:             9624 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 16:04:26 (client local time) WITH STATUS 1 IN 107.38 SECONDS
stats: 8620 7 107.38 1

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified

	Unexpected exception :
	St9bad_alloc

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/8651/stat): 8651 (pb2sat) R 8650 8651 4059 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21472676 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/8651/statm): 373 2 364 364 0 9 0
[pid=8651] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-brandy.opb

[startup+10.0018 s]
Raw data (loadavg): 0.92 0.95 0.95 2/55 8651
Raw data (/proc/8651/stat): 8651 (pb2sat) R 8650 8651 4059 0 -1 0 29788 0 0 0 938 59 0 0 25 0 1 0 21472676 90202112 18639 4294967295 134512640 135987407 3221224560 3221069792 134637036 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8651/statm): 22022 18639 364 364 0 21658 0
[pid=8651] vsize: 88088
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 88088

[startup+20.0015 s]
Raw data (loadavg): 0.93 0.96 0.95 2/55 8651
Raw data (/proc/8651/stat): 8651 (pb2sat) R 8650 8651 4059 0 -1 0 60582 0 0 0 1874 119 0 0 25 0 1 0 21472676 186843136 38223 4294967295 134512640 135987407 3221224560 3221079868 134637002 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8651/statm): 45616 38223 364 364 0 45252 0
[pid=8651] vsize: 182464
Current children cumulated CPU time (s) 19.93
Current children cumulated vsize (Kb) 182464

[startup+30.0022 s]
Raw data (loadavg): 0.94 0.96 0.95 2/55 8651
Raw data (/proc/8651/stat): 8651 (pb2sat) R 8650 8651 4059 0 -1 0 102858 0 0 0 2786 202 0 0 25 0 1 0 21472676 317911040 58306 4294967295 134512640 135987407 3221224560 3221072032 134856540 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8651/statm): 77615 58306 364 364 0 77251 0
[pid=8651] vsize: 310460
Current children cumulated CPU time (s) 29.88
Current children cumulated vsize (Kb) 310460

[startup+40.0018 s]
Raw data (loadavg): 0.95 0.96 0.95 2/55 8651
Raw data (/proc/8651/stat): 8651 (pb2sat) R 8650 8651 4059 0 -1 0 120681 0 0 0 3747 240 0 0 25 0 1 0 21472676 375390208 75915 4294967295 134512640 135987407 3221224560 3221076172 134636964 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8651/statm): 91648 75915 364 364 0 91284 0
[pid=8651] vsize: 366592
Current children cumulated CPU time (s) 39.87
Current children cumulated vsize (Kb) 366592

[startup+50.0025 s]
Raw data (loadavg): 0.96 0.96 0.95 2/55 8651
Raw data (/proc/8651/stat): 8651 (pb2sat) R 8650 8651 4059 0 -1 0 144929 0 0 0 4695 289 0 0 25 0 1 0 21472676 552071168 99736 4294967295 134512640 135987407 3221224560 3221078044 135500012 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8651/statm): 134783 99736 364 364 0 134419 0
[pid=8651] vsize: 539132
Current children cumulated CPU time (s) 49.84
Current children cumulated vsize (Kb) 539132

[startup+60.0022 s]
Raw data (loadavg): 0.96 0.96 0.95 2/55 8651
Raw data (/proc/8651/stat): 8651 (pb2sat) R 8650 8651 4059 0 -1 0 205223 0 0 0 5571 408 0 0 25 0 1 0 21472676 638877696 116080 4294967295 134512640 135987407 3221224560 3221083612 134635332 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8651/statm): 155976 116080 364 364 0 155612 0
[pid=8651] vsize: 623904
Current children cumulated CPU time (s) 59.79
Current children cumulated vsize (Kb) 623904

[startup+70.0019 s]
Raw data (loadavg): 0.97 0.96 0.95 2/55 8651
Raw data (/proc/8651/stat): 8651 (pb2sat) R 8650 8651 4059 0 -1 0 221506 0 0 0 6539 439 0 0 25 0 1 0 21472676 694198272 132167 4294967295 134512640 135987407 3221224560 3221083744 134855001 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8651/statm): 169482 132167 364 364 0 169118 0
[pid=8651] vsize: 677928
Current children cumulated CPU time (s) 69.78
Current children cumulated vsize (Kb) 677928

[startup+80.0026 s]
Raw data (loadavg): 0.97 0.96 0.95 2/55 8651
Raw data (/proc/8651/stat): 8651 (pb2sat) R 8650 8651 4059 0 -1 0 240165 0 0 0 7501 475 0 0 25 0 1 0 21472676 718663680 150600 4294967295 134512640 135987407 3221224560 3221085584 134802743 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8651/statm): 175455 150600 364 364 0 175091 0
[pid=8651] vsize: 701820
Current children cumulated CPU time (s) 79.76
Current children cumulated vsize (Kb) 701820

[startup+90.0022 s]
Raw data (loadavg): 0.98 0.96 0.95 2/55 8651
Raw data (/proc/8651/stat): 8651 (pb2sat) R 8650 8651 4059 0 -1 0 258833 0 0 0 8461 512 0 0 25 0 1 0 21472676 743129088 169042 4294967295 134512640 135987407 3221224560 3221088976 134537361 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8651/statm): 181428 169042 364 364 0 181064 0
[pid=8651] vsize: 725712
Current children cumulated CPU time (s) 89.73
Current children cumulated vsize (Kb) 725712

[startup+100.003 s]
Raw data (loadavg): 0.98 0.96 0.95 2/55 8651
Raw data (/proc/8651/stat): 8651 (pb2sat) R 8650 8651 4059 0 -1 0 273700 0 0 0 9430 542 0 0 25 0 1 0 21472676 812924928 183729 4294967295 134512640 135987407 3221224560 3221093308 134637002 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8651/statm): 198468 183729 364 364 0 198104 0
[pid=8651] vsize: 793872
Current children cumulated CPU time (s) 99.72
Current children cumulated vsize (Kb) 793872
One traced child (pid=8651) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 107.661
CPU time (s): 107.38
CPU user time (s): 101.437
CPU system time (s): 5.9431
CPU usage (%): 99.7384
Max. virtual memory (cumulated for all children) (Kb): 793872

Verifier Data

ERROR: no interpretation found !