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).
  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

Namenormalized-opb/mps-v2-20-10/MIPLIB/miplib/normalized-mps-v2-20-10-bell4.opb
MD5SUM3cce8c056d32fd25c784b4e9cbdd2db6
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 2147483647
Optimality of the best value was proved NO
Number of terms in the objective function 1527
Biggest coefficient in the objective function 4949278720000000
Number of bits for the biggest coefficient in the objective function 53
Sum of the numbers in the objective function 114314457147588882
Number of bits of the sum of numbers in the objective function 57
Biggest number in a constraint 4949278720000000
Number of bits of the biggest number in a constraint 53
Biggest sum of numbers in a constraint 114314457147588882
Number of bits of the biggest sum of numbers57
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1226.37
Number of variables1996
Total number of constraints169
Number of constraints which are clauses18
Number of constraints which are cardinality constraints (but not clauses)34
Number of constraints which are nor clauses,nor cardinality constraints117
Minimum length of a constraint1
Maximum length of a constraint135

Trace number 35131 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc31 THE 2005-05-28 12:17:19 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=24430 boxname=wulflinc31 idbench=902 idsolver=17 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  3cce8c056d32fd25c784b4e9cbdd2db6  /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-20-10-bell4.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-20-10-bell4.opb
IDLAUNCH: 24430
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.153
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		: 451.153
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:        846260 kB
Buffers:         34768 kB
Cached:         131324 kB
SwapCached:       1052 kB
Active:          80636 kB
Inactive:        87624 kB
HighTotal:      131008 kB
HighFree:         6888 kB
LowTotal:       903652 kB
LowFree:        839372 kB
SwapTotal:     2097892 kB
SwapFree:      2095928 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5108 kB
Slab:            14616 kB
Committed_AS:    63812 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-28 12:19:14 (client local time) WITH STATUS 1 IN 114.449 SECONDS
stats: 24430 7 114.449 1
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c This solver internally uses Chaff 2004.11.15 Simplified

	Unexpected exception :
	St9bad_alloc
#### END SOLVER DATA ####
#### BEGIN WATCHER DATA ####
Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing VSIZE limit: 943718400 bytes
Enforcing Stack size limit: 67108864 bytes
Current StackSize limit: 67108864 bytes
Raw data (loadavg): 0.91 0.95 0.90 2/55 19777
Raw data (stat): 19777 (runsolver) R 19776 29618 29617 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 864717074 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+10.0012 s]
Raw data (loadavg): 0.92 0.96 0.91 2/55 19777
Raw data (stat): 19777 (pb2sat) R 19776 29618 29617 0 -1 0 29202 0 0 0 940 59 0 0 25 0 1 0 864717074 89731072 18064 4294967295 134512640 135726644 3221224576 3220606552 135280714 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 21907 18064 300 300 0 21607 0
vsize: 87628
[startup+20.0011 s]
Raw data (loadavg): 0.93 0.96 0.91 2/55 19779
Raw data (stat): 19777 (pb2sat) R 19776 29618 29617 0 -1 0 57223 0 0 0 1887 112 0 0 25 0 1 0 864717074 175448064 34870 4294967295 134512640 135726644 3221224576 3220603312 134554780 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 42834 34870 300 300 0 42534 0
vsize: 171336
[startup+30.0024 s]
Raw data (loadavg): 0.94 0.96 0.91 2/55 19779
Raw data (stat): 19777 (pb2sat) R 19776 29618 29617 0 -1 0 96381 0 0 0 2808 191 0 0 25 0 1 0 864717074 297152512 51843 4294967295 134512640 135726644 3221224576 3220603024 134604379 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 72547 51843 300 300 0 72247 0
vsize: 290188
[startup+40.003 s]
Raw data (loadavg): 0.95 0.96 0.91 2/55 19779
Raw data (stat): 19777 (pb2sat) R 19776 29618 29617 0 -1 0 112138 0 0 0 3779 220 0 0 25 0 1 0 864717074 345169920 67376 4294967295 134512640 135726644 3221224576 3220600152 135281220 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 84270 67376 300 300 0 83970 0
vsize: 337080
[startup+50.0033 s]
Raw data (loadavg): 0.96 0.96 0.91 2/55 19779
Raw data (stat): 19777 (pb2sat) R 19776 29618 29617 0 -1 0 140556 0 0 0 4727 272 0 0 25 0 1 0 864717074 531062784 95238 4294967295 134512640 135726644 3221224576 3220603560 135280696 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 129654 95238 300 300 0 129354 0
vsize: 518616
[startup+60.0042 s]
Raw data (loadavg): 0.96 0.96 0.91 2/55 19779
Raw data (stat): 19777 (pb2sat) R 19776 29618 29617 0 -1 0 191028 0 0 0 5628 372 0 0 25 0 1 0 864717074 593362944 101916 4294967295 134512640 135726644 3221224576 3220602880 134782642 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 144864 101916 300 300 0 144564 0
vsize: 579456
[startup+70.0054 s]
Raw data (loadavg): 0.97 0.96 0.91 2/55 19779
Raw data (stat): 19777 (pb2sat) R 19776 29618 29617 0 -1 0 202084 0 0 0 6604 396 0 0 25 0 1 0 864717074 626917376 112772 4294967295 134512640 135726644 3221224576 3220599616 135278599 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 153056 112772 300 300 0 152756 0
vsize: 612224
[startup+80.0067 s]
Raw data (loadavg): 0.97 0.96 0.91 2/55 19781
Raw data (stat): 19777 (pb2sat) R 19776 29618 29617 0 -1 0 219774 0 0 0 7572 428 0 0 25 0 1 0 864717074 647327744 130228 4294967295 134512640 135726644 3221224576 3220599792 134784500 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 158039 130228 300 300 0 157739 0
vsize: 632156
[startup+90.007 s]
Raw data (loadavg): 0.98 0.96 0.91 2/55 19781
Raw data (stat): 19777 (pb2sat) R 19776 29618 29617 0 -1 0 239304 0 0 0 8532 468 0 0 25 0 1 0 864717074 676302848 149531 4294967295 134512640 135726644 3221224576 3220606900 134604404 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 165113 149531 300 300 0 164813 0
vsize: 660452
[startup+100.007 s]
Raw data (loadavg): 0.98 0.96 0.91 2/55 19781
Raw data (stat): 19777 (pb2sat) R 19776 29618 29617 0 -1 0 254717 0 0 0 9502 498 0 0 25 0 1 0 864717074 749092864 164766 4294967295 134512640 135726644 3221224576 3220603996 135298010 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 182884 164766 300 300 0 182584 0
vsize: 731536
[startup+110.008 s]
Raw data (loadavg): 0.98 0.97 0.91 2/55 19781
Raw data (stat): 19777 (pb2sat) R 19776 29618 29617 0 -1 0 261786 0 0 0 10474 526 0 0 25 0 1 0 864717074 399826944 97098 4294967295 134512640 135726644 3221224576 3221222764 135277604 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 97614 97098 300 300 0 97314 0
vsize: 390456
[startup+114.447 s]
Raw data (loadavg): 0.98 0.97 0.91 1/54 19781
Raw data (stat): 19777 (pb2sat) R 19776 29618 29617 0 -1 0 261786 0 0 0 10474 526 0 0 25 0 1 0 864717074 399826944 97098 4294967295 134512640 135726644 3221224576 3221222764 135277604 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 97614 97098 300 300 0 97314 0
vsize: 0

Child status: 1
Real time (s): 114.446
CPU time (s): 114.449
CPU user time (s): 108.972
CPU system time (s): 5.47617
CPU usage (%): 100.002
Max. virtual memory (Kb): 731536
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####