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-air02.opb
MD5SUM75acdcffdd43b3d3a30d0459a6bffe45
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 6106
Optimality of the best value was proved NO
Number of terms in the objective function 6774
Biggest coefficient in the objective function 4804
Number of bits for the biggest coefficient in the objective function 13
Sum of the numbers in the objective function 6613094
Number of bits of the sum of numbers in the objective function 23
Biggest number in a constraint 4804
Number of bits of the biggest number in a constraint 13
Biggest sum of numbers in a constraint 6613094
Number of bits of the biggest sum of numbers23
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1190.1
Number of variables6774
Total number of constraints6824
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)6824
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint1
Maximum length of a constraint3729

Trace number 22321 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc13 THE 2005-04-22 03:08:28 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=11634 boxname=wulflinc13 idbench=895 idsolver=12 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  75acdcffdd43b3d3a30d0459a6bffe45  /oldhome/oroussel/tmp/wulflinc13/normalized-mps-v2-20-10-air02.opb
REAL COMMAND:  minisat+ -cb -gs /oldhome/oroussel/tmp/wulflinc13/normalized-mps-v2-20-10-air02.opb /oldhome/oroussel/tmp/wulflinc13/normalized-mps-v2-20-10-air02.opb
IDLAUNCH: 11634
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.242
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		: 451.242
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:        310704 kB
Buffers:         25684 kB
Cached:         676840 kB
SwapCached:        392 kB
Active:         129364 kB
Inactive:       575208 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        310452 kB
SwapTotal:     2097136 kB
SwapFree:      2095968 kB
Dirty:              40 kB
Writeback:           0 kB
Mapped:           5748 kB
Slab:            13768 kB
Committed_AS:    63596 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-04-22 03:09:22 (client local time) WITH STATUS 0 IN 53.2069 SECONDS
stats: 11634 7 53.2069 0
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c Parsing PB file...
c Converting 100 PB-constraints to clauses...
c   -- Unit propagations: (none)
c   -- Detecting intervals from adjacent constraints: ##################################################
c   -- Clauses(.)/Splits(s): (none)
c ---[  98]---> BDD-cost:   37
c ---[  96]---> BDD-cost:    1
c ---[  94]---> BDD-cost:  229
c ---[  92]---> BDD-cost:    1
c ---[  90]---> BDD-cost:  363
c ---[  88]---> BDD-cost:    1
c ---[  86]---> BDD-cost:  693
c ---[  84]---> BDD-cost:  743
c ---[  82]---> BDD-cost: 1013
c ---[  80]---> BDD-cost: 1141
c ---[  78]---> BDD-cost: 1273
c ---[  76]---> BDD-cost: 1269
c ---[  74]---> BDD-cost: 1447
c ---[  72]---> BDD-cost: 1601
c ---[  70]---> BDD-cost:    1
c ---[  68]---> BDD-cost: 1469
c ---[  66]---> BDD-cost:    1
c ---[  64]---> BDD-cost: 1549
c ---[  62]---> BDD-cost:    1
c ---[  60]---> BDD-cost: 2025
c ---[  58]---> BDD-cost: 1963
c ---[  56]---> BDD-cost:    1
c ---[  54]---> BDD-cost: 1755
c ---[  52]---> BDD-cost:    1
c ---[  50]---> BDD-cost: 2671
c ---[  48]---> BDD-cost: 2239
c ---[  46]---> BDD-cost: 2717
c ---[  44]---> BDD-cost: 2597
c ---[  42]---> BDD-cost:    1
c ---[  40]---> BDD-cost: 2719
c ---[  38]---> BDD-cost: 3387
c ---[  36]---> BDD-cost: 2815
c ---[  34]---> BDD-cost: 3131
c ---[  32]---> BDD-cost: 3331
c ---[  30]---> BDD-cost: 3523
c ---[  28]---> BDD-cost: 3303
c ---[  26]---> BDD-cost:    1
c ---[  24]---> BDD-cost: 3607
c ---[  22]---> BDD-cost: 3613
c ---[  20]---> BDD-cost:    1
c ---[  18]---> BDD-cost:    1
c ---[  16]---> BDD-cost: 3761
c ---[  14]---> BDD-cost: 3929
c ---[  12]---> BDD-cost: 4211
c ---[  10]---> BDD-cost: 3903
c ---[   8]---> BDD-cost: 4471
c ---[   6]---> BDD-cost: 4887
c ---[   4]---> BDD-cost: 4971
c ---[   2]---> BDD-cost: 4987
c ---[   0]---> BDD-cost: 7419
c ==================================[MINISAT+]==================================
c | Conflicts | Original         | Learnt                           | Progress |
c |           | Clauses Literals |     Max Clauses Literals     LPC |          |
c ==============================================================================
c |         0 |  251932   655072 |   83977       0        0     nan |  0.000 % |
#### 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
Raw data (loadavg): 0.93 0.98 0.95 2/54 2540
Raw data (stat): 2540 (runsolver) R 2539 30701 30700 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 492144836 1052672 99 4294967295 134512640 135381576 3221224432 3221219676 135158418 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+10.0011 s]
Raw data (loadavg): 0.94 0.98 0.95 2/54 2540
Raw data (stat): 2540 (minisat+) R 2539 30701 30700 0 -1 0 9927 0 0 0 973 25 0 0 25 0 1 0 492144836 41631744 9301 4294967295 134512640 134672761 3221224544 3221222816 134597012 0 0 5 16386 0 0 0 17 0 0 0
Raw data (statm): 10164 9301 603 41 0 10123 0
vsize: 40656
[startup+20.0014 s]
Raw data (loadavg): 0.95 0.98 0.95 2/54 2540
Raw data (stat): 2540 (minisat+) R 2539 30701 30700 0 -1 0 51111 0 0 0 1879 118 0 0 25 0 1 0 492144836 207466496 45432 4294967295 134512640 134672761 3221224544 3221221760 134523717 0 0 5 16386 0 0 0 17 1 0 0
Raw data (statm): 50651 45432 603 41 0 50610 0
vsize: 202604
[startup+30.0017 s]
Raw data (loadavg): 0.95 0.98 0.95 2/54 2540
Raw data (stat): 2540 (minisat+) R 2539 30701 30700 0 -1 0 93675 0 0 0 2778 219 0 0 25 0 1 0 492144836 335044608 72177 4294967295 134512640 134672761 3221224544 3221221220 1075347030 0 0 5 16386 0 0 0 17 0 0 0
Raw data (statm): 81798 72177 603 41 0 81757 0
vsize: 327192
[startup+40.0022 s]
Raw data (loadavg): 0.96 0.98 0.95 2/54 2540
Raw data (stat): 2540 (minisat+) R 2539 30701 30700 0 -1 0 146059 0 0 0 3658 339 0 0 25 0 1 0 492144836 583880704 124545 4294967295 134512640 134672761 3221224544 3221131696 1075350501 0 0 5 16386 0 0 0 17 0 0 0
Raw data (statm): 142549 124545 603 41 0 142508 0
vsize: 570196
[startup+50.0026 s]
Raw data (loadavg): 1.05 0.99 0.95 2/54 2540
Raw data (stat): 2540 (minisat+) R 2539 30701 30700 0 -1 0 201008 0 0 0 4522 465 0 0 25 0 1 0 492144836 815796224 179494 4294967295 134512640 134672761 3221224544 3221149936 134556775 0 0 5 16386 0 0 0 17 0 0 0
Raw data (statm): 199169 179495 603 41 0 199128 0
vsize: 796676
[startup+53.3463 s]
Raw data (loadavg): 1.05 0.99 0.95 1/53 2540
Raw data (stat): 2540 (minisat+) R 2539 30701 30700 0 -1 0 201008 0 0 0 4522 465 0 0 25 0 1 0 492144836 815796224 179494 4294967295 134512640 134672761 3221224544 3221149936 134556775 0 0 5 16386 0 0 0 17 0 0 0
Raw data (statm): 199169 179495 603 41 0 199128 0
vsize: 0

Child ended because it received signal 11 (SIGSEGV)
Real time (s): 53.346
CPU time (s): 53.2069
CPU user time (s): 47.7397
CPU system time (s): 5.46717
CPU usage (%): 99.7393
Max. virtual memory (Kb): 796676
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####