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/plato.asu.edu/pub/milp/normalized-mps-v2-13-7-seymour1.opb
MD5SUM6ce78c8c12f3a600932e30ddb0640345
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 63701
Optimality of the best value was proved NO
Number of terms in the objective function 7819
Biggest coefficient in the objective function 128
Number of bits for the biggest coefficient in the objective function 8
Sum of the numbers in the objective function 292583
Number of bits of the sum of numbers in the objective function 19
Biggest number in a constraint 128
Number of bits of the biggest number in a constraint 8
Biggest sum of numbers in a constraint 292583
Number of bits of the biggest sum of numbers19
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1195.36
Number of variables7819
Total number of constraints6316
Number of constraints which are clauses651
Number of constraints which are cardinality constraints (but not clauses)451
Number of constraints which are nor clauses,nor cardinality constraints5214
Minimum length of a constraint1
Maximum length of a constraint144

Trace number 10564

Launcher Data

LAUNCH ON wulflinc10 THE 2005-09-23 19:04:00 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=9327 boxname=wulflinc10 idbench=1123 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  6ce78c8c12f3a600932e30ddb0640345  /oldhome/oroussel/tmp/wulflinc10/normalized-mps-v2-13-7-seymour1.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc10/normalized-mps-v2-13-7-seymour1.opb
IDLAUNCH: 9327
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.193
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		: 451.193
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:        924780 kB
Buffers:         12768 kB
Cached:          79712 kB
SwapCached:          0 kB
Active:          48528 kB
Inactive:        46820 kB
HighTotal:      131008 kB
HighFree:        47432 kB
LowTotal:       903652 kB
LowFree:        877348 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6976 kB
Slab:             8984 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 19:05:48 (client local time) WITH STATUS 1 IN 107.259 SECONDS
stats: 9327 7 107.259 1

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
c got solution with objective value: 170407
c big objective detected
c trying from 0 to 511

	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/9997/stat): 9997 (pb2sat) R 9996 9997 4061 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 22565036 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9997/statm): 373 2 364 364 0 9 0
[pid=9997] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc10/normalized-mps-v2-13-7-seymour1.opb

[startup+10.0011 s]
Raw data (loadavg): 0.86 0.94 0.91 2/55 9997
Raw data (/proc/9997/stat): 9997 (pb2sat) R 9996 9997 4061 0 -1 0 25887 0 0 0 934 62 0 0 25 0 1 0 22565036 79941632 14758 4294967295 134512640 135987407 3221224560 3221219316 135486835 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9997/statm): 19517 14758 364 364 0 19153 0
[pid=9997] vsize: 78068
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 78068

[startup+20.0027 s]
Raw data (loadavg): 0.88 0.94 0.91 2/55 9997
Raw data (/proc/9997/stat): 9997 (pb2sat) R 9996 9997 4061 0 -1 0 53690 0 0 0 1867 127 0 0 25 0 1 0 22565036 157388800 31317 4294967295 134512640 135987407 3221224560 3221207152 134878165 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9997/statm): 38425 31317 364 364 0 38061 0
[pid=9997] vsize: 153700
Current children cumulated CPU time (s) 19.94
Current children cumulated vsize (Kb) 153700

[startup+30.0033 s]
Raw data (loadavg): 0.90 0.94 0.91 2/55 9997
Raw data (/proc/9997/stat): 9997 (pb2sat) R 9996 9997 4061 0 -1 0 93859 0 0 0 2775 215 0 0 25 0 1 0 22565036 274259968 49263 4294967295 134512640 135987407 3221224560 3221206472 135487877 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9997/statm): 66958 49263 364 364 0 66594 0
[pid=9997] vsize: 267832
Current children cumulated CPU time (s) 29.9
Current children cumulated vsize (Kb) 267832

[startup+40.0028 s]
Raw data (loadavg): 0.91 0.94 0.91 2/55 9997
Raw data (/proc/9997/stat): 9997 (pb2sat) R 9996 9997 4061 0 -1 0 109086 0 0 0 3732 258 0 0 25 0 1 0 22565036 312410112 64232 4294967295 134512640 135987407 3221224560 3221195200 134887829 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9997/statm): 76272 64232 364 364 0 75908 0
[pid=9997] vsize: 305088
Current children cumulated CPU time (s) 39.9
Current children cumulated vsize (Kb) 305088

[startup+50.0034 s]
Raw data (loadavg): 0.93 0.94 0.91 2/55 9997
Raw data (/proc/9997/stat): 9997 (pb2sat) R 9996 9997 4061 0 -1 0 151348 0 0 0 4638 348 0 0 25 0 1 0 22565036 441298944 86857 4294967295 134512640 135987407 3221224560 3221221392 134563054 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9997/statm): 107739 86857 364 364 0 107375 0
[pid=9997] vsize: 430956
Current children cumulated CPU time (s) 49.86
Current children cumulated vsize (Kb) 430956

[startup+60.0029 s]
Raw data (loadavg): 0.94 0.95 0.91 2/55 9997
Raw data (/proc/9997/stat): 9997 (pb2sat) R 9996 9997 4061 0 -1 0 187492 0 0 0 5551 433 0 0 25 0 1 0 22565036 579301376 98229 4294967295 134512640 135987407 3221224560 3221221744 134536134 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9997/statm): 141431 98229 364 364 0 141067 0
[pid=9997] vsize: 565724
Current children cumulated CPU time (s) 59.84
Current children cumulated vsize (Kb) 565724

[startup+70.0045 s]
Raw data (loadavg): 0.95 0.95 0.91 1/55 9997
Raw data (/proc/9997/stat): 9997 (pb2sat) T 9996 9997 4061 0 -1 0 199438 0 0 0 6503 467 0 0 25 0 1 0 22565036 608456704 107516 4294967295 134512640 135987407 3221224560 3221223388 135541329 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/9997/statm): 148549 107516 364 364 0 148185 0
[pid=9997] vsize: 594196
Current children cumulated CPU time (s) 69.7
Current children cumulated vsize (Kb) 594196

[startup+80.005 s]
Raw data (loadavg): 0.95 0.95 0.91 2/55 9997
Raw data (/proc/9997/stat): 9997 (pb2sat) R 9996 9997 4061 0 -1 0 219883 0 0 0 7443 516 0 0 25 0 1 0 22565036 639696896 127712 4294967295 134512640 135987407 3221224560 3219486108 134636944 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9997/statm): 156176 127713 364 364 0 155812 0
[pid=9997] vsize: 624704
Current children cumulated CPU time (s) 79.59
Current children cumulated vsize (Kb) 624704

[startup+90.0046 s]
Raw data (loadavg): 0.96 0.95 0.91 2/55 9997
Raw data (/proc/9997/stat): 9997 (pb2sat) R 9996 9997 4061 0 -1 0 239733 0 0 0 8400 559 0 0 25 0 1 0 22565036 667136000 147319 4294967295 134512640 135987407 3221224560 3219285712 134931273 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9997/statm): 162875 147320 364 364 0 162511 0
[pid=9997] vsize: 651500
Current children cumulated CPU time (s) 89.59
Current children cumulated vsize (Kb) 651500

[startup+100.004 s]
Raw data (loadavg): 0.97 0.95 0.91 2/55 9997
Raw data (/proc/9997/stat): 9997 (pb2sat) R 9996 9997 4061 0 -1 0 254792 0 0 0 9364 593 0 0 25 0 1 0 22565036 737607680 162194 4294967295 134512640 135987407 3221224560 3219513392 134887887 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9997/statm): 180080 162195 364 364 0 179716 0
[pid=9997] vsize: 720320
Current children cumulated CPU time (s) 99.57
Current children cumulated vsize (Kb) 720320
One traced child (pid=9997) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 107.69
CPU time (s): 107.259
CPU user time (s): 100.877
CPU system time (s): 6.38203
CPU usage (%): 99.5998
Max. virtual memory (cumulated for all children) (Kb): 720320

Verifier Data

ERROR: no interpretation found !