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-p2756.opb
MD5SUMcc9b9a1bf5f3e0998bc97d2eed5cbbd9
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 4605
Optimality of the best value was proved NO
Number of terms in the objective function 2166
Biggest coefficient in the objective function 11000
Number of bits for the biggest coefficient in the objective function 14
Sum of the numbers in the objective function 321831
Number of bits of the sum of numbers in the objective function 19
Biggest number in a constraint 11000
Number of bits of the biggest number in a constraint 14
Biggest sum of numbers in a constraint 321831
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 benchmark1.07384
Number of variables2756
Total number of constraints3511
Number of constraints which are clauses132
Number of constraints which are cardinality constraints (but not clauses)2976
Number of constraints which are nor clauses,nor cardinality constraints403
Minimum length of a constraint1
Maximum length of a constraint546

Trace number 35168 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc25 THE 2005-05-28 12:20:40 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=24465 boxname=wulflinc25 idbench=937 idsolver=17 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  cc9b9a1bf5f3e0998bc97d2eed5cbbd9  /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-p2756.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-p2756.opb
IDLAUNCH: 24465
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.220
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		: 451.220
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:        686128 kB
Buffers:         36544 kB
Cached:         291648 kB
SwapCached:        996 kB
Active:          38992 kB
Inactive:       291276 kB
HighTotal:      131008 kB
HighFree:         4704 kB
LowTotal:       903652 kB
LowFree:        681424 kB
SwapTotal:     2097892 kB
SwapFree:      2095984 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5060 kB
Slab:            12632 kB
Committed_AS:    63600 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-28 12:22:28 (client local time) WITH STATUS 1 IN 107.447 SECONDS
stats: 24465 7 107.447 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): 0.92 0.97 0.91 2/54 8935
Raw data (stat): 8935 (runsolver) R 8934 1586 1585 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 864772269 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+10.001 s]
Raw data (loadavg): 0.93 0.97 0.91 2/54 8935
Raw data (stat): 8935 (pb2sat) R 8934 1586 1585 0 -1 0 29753 0 0 0 936 62 0 0 25 0 1 0 864772269 90419200 18615 4294967295 134512640 135726644 3221224576 3220653656 135282351 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 22075 18615 300 300 0 21775 0
vsize: 88300
[startup+20.0019 s]
Raw data (loadavg): 0.94 0.97 0.91 2/54 8935
Raw data (stat): 8935 (pb2sat) R 8934 1586 1585 0 -1 0 58117 0 0 0 1879 119 0 0 25 0 1 0 864772269 175972352 35768 4294967295 134512640 135726644 3221224576 3220545264 134767064 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 42962 35769 300 300 0 42662 0
vsize: 171848
[startup+30.0024 s]
Raw data (loadavg): 0.95 0.97 0.91 2/54 8935
Raw data (stat): 8935 (pb2sat) R 8934 1586 1585 0 -1 0 98518 0 0 0 2796 203 0 0 25 0 1 0 864772269 299737088 53977 4294967295 134512640 135726644 3221224576 3220862864 134767136 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 73178 53977 300 300 0 72878 0
vsize: 292712
[startup+40.0027 s]
Raw data (loadavg): 0.96 0.97 0.91 2/54 8935
Raw data (stat): 8935 (pb2sat) R 8934 1586 1585 0 -1 0 114684 0 0 0 3761 238 0 0 25 0 1 0 864772269 347484160 69918 4294967295 134512640 135726644 3221224576 3220630400 135284798 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 84835 69919 300 300 0 84535 0
vsize: 339340
[startup+50.0026 s]
Raw data (loadavg): 0.96 0.97 0.91 2/54 8935
Raw data (stat): 8935 (pb2sat) R 8934 1586 1585 0 -1 0 145244 0 0 0 4699 300 0 0 25 0 1 0 864772269 536322048 99852 4294967295 134512640 135726644 3221224576 3220721160 135282351 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 130938 99854 300 300 0 130638 0
vsize: 523752
[startup+60.0033 s]
Raw data (loadavg): 0.97 0.97 0.91 2/54 8935
Raw data (stat): 8935 (pb2sat) R 8934 1586 1585 0 -1 0 195523 0 0 0 5595 405 0 0 25 0 1 0 864772269 597852160 106391 4294967295 134512640 135726644 3221224576 3221078952 134784091 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 145960 106391 300 300 0 145660 0
vsize: 583840
[startup+70.0035 s]
Raw data (loadavg): 0.97 0.97 0.91 2/54 8935
Raw data (stat): 8935 (pb2sat) R 8934 1586 1585 0 -1 0 206956 0 0 0 6568 432 0 0 25 0 1 0 864772269 631406592 117623 4294967295 134512640 135726644 3221224576 3221031832 134607249 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 154152 117623 300 300 0 153852 0
vsize: 616608
[startup+80.0034 s]
Raw data (loadavg): 0.98 0.97 0.91 2/54 8935
Raw data (stat): 8935 (pb2sat) R 8934 1586 1585 0 -1 0 225433 0 0 0 7530 469 0 0 25 0 1 0 864772269 652492800 135864 4294967295 134512640 135726644 3221224576 3221024232 135282351 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 159300 135865 300 300 0 159000 0
vsize: 637200
[startup+90.0083 s]
Raw data (loadavg): 0.98 0.97 0.91 2/54 8935
Raw data (stat): 8935 (pb2sat) R 8934 1586 1585 0 -1 0 243862 0 0 0 8495 506 0 0 25 0 1 0 864772269 729182208 154081 4294967295 134512640 135726644 3221224576 3220797200 134780450 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 178023 154081 300 300 0 177723 0
vsize: 712092
[startup+100.008 s]
Raw data (loadavg): 0.98 0.97 0.91 2/54 8935
Raw data (stat): 8935 (pb2sat) R 8934 1586 1585 0 -1 0 261860 0 0 0 9457 543 0 0 25 0 1 0 864772269 754728960 171872 4294967295 134512640 135726644 3221224576 3220758480 134782642 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 184260 171872 300 300 0 183960 0
vsize: 737040
[startup+107.465 s]
Raw data (loadavg): 0.98 0.97 0.91 1/53 8935
Raw data (stat): 8935 (pb2sat) R 8934 1586 1585 0 -1 0 261860 0 0 0 9457 543 0 0 25 0 1 0 864772269 754728960 171872 4294967295 134512640 135726644 3221224576 3220758480 134782642 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 184260 171872 300 300 0 183960 0
vsize: 0

Child status: 1
Real time (s): 107.465
CPU time (s): 107.447
CPU user time (s): 101.577
CPU system time (s): 5.87011
CPU usage (%): 99.9829
Max. virtual memory (Kb): 737040
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####