./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/heap-manipulation/merge_sort_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for ERROR reachability
Using default analysis
Version 5842f4b8
Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1d76d958-a61b-4e5c-994b-b41bf10fcecc/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1d76d958-a61b-4e5c-994b-b41bf10fcecc/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1d76d958-a61b-4e5c-994b-b41bf10fcecc/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1d76d958-a61b-4e5c-994b-b41bf10fcecc/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/merge_sort_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_1d76d958-a61b-4e5c-994b-b41bf10fcecc/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1d76d958-a61b-4e5c-994b-b41bf10fcecc/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 534681b11e8e68e6058985d885b01f2cbfa43e5b
......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE
--- Real Ultimate output ---
This is Ultimate 0.1.23-5842f4b
[2018-11-18 17:21:49,435 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-11-18 17:21:49,435 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-11-18 17:21:49,441 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-11-18 17:21:49,442 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-11-18 17:21:49,442 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-11-18 17:21:49,443 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-11-18 17:21:49,444 INFO  L174        SettingsManager]: Resetting LassoRanker preferences to default values
[2018-11-18 17:21:49,446 INFO  L174        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2018-11-18 17:21:49,446 INFO  L174        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2018-11-18 17:21:49,447 INFO  L177        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-11-18 17:21:49,447 INFO  L174        SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-11-18 17:21:49,448 INFO  L174        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2018-11-18 17:21:49,448 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-11-18 17:21:49,449 INFO  L174        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-11-18 17:21:49,449 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-11-18 17:21:49,450 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-11-18 17:21:49,451 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-11-18 17:21:49,452 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-11-18 17:21:49,453 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-11-18 17:21:49,454 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-11-18 17:21:49,455 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-11-18 17:21:49,457 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2018-11-18 17:21:49,457 INFO  L177        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2018-11-18 17:21:49,457 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-11-18 17:21:49,458 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-11-18 17:21:49,458 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-11-18 17:21:49,459 INFO  L174        SettingsManager]: Resetting ReqPrinter preferences to default values
[2018-11-18 17:21:49,459 INFO  L174        SettingsManager]: Resetting Witness Printer preferences to default values
[2018-11-18 17:21:49,460 INFO  L177        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2018-11-18 17:21:49,460 INFO  L174        SettingsManager]: Resetting CDTParser preferences to default values
[2018-11-18 17:21:49,461 INFO  L177        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2018-11-18 17:21:49,461 INFO  L177        SettingsManager]: ReqParser provides no preferences, ignoring...
[2018-11-18 17:21:49,461 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
[2018-11-18 17:21:49,461 INFO  L174        SettingsManager]: Resetting Witness Parser preferences to default values
[2018-11-18 17:21:49,462 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-11-18 17:21:49,462 INFO  L98         SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1d76d958-a61b-4e5c-994b-b41bf10fcecc/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf
[2018-11-18 17:21:49,472 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-11-18 17:21:49,472 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-11-18 17:21:49,473 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-11-18 17:21:49,473 INFO  L133        SettingsManager]:  * to procedures, called more than once=true
[2018-11-18 17:21:49,474 INFO  L131        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-11-18 17:21:49,474 INFO  L133        SettingsManager]:  * Create parallel compositions if possible=false
[2018-11-18 17:21:49,474 INFO  L133        SettingsManager]:  * Use SBE=true
[2018-11-18 17:21:49,474 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-11-18 17:21:49,474 INFO  L133        SettingsManager]:  * sizeof long=4
[2018-11-18 17:21:49,474 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-11-18 17:21:49,474 INFO  L133        SettingsManager]:  * sizeof POINTER=4
[2018-11-18 17:21:49,475 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-11-18 17:21:49,475 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-11-18 17:21:49,475 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-11-18 17:21:49,475 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-11-18 17:21:49,475 INFO  L133        SettingsManager]:  * sizeof long double=12
[2018-11-18 17:21:49,475 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-11-18 17:21:49,475 INFO  L133        SettingsManager]:  * Use constant arrays=true
[2018-11-18 17:21:49,475 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-11-18 17:21:49,475 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-11-18 17:21:49,475 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-11-18 17:21:49,475 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-11-18 17:21:49,476 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-11-18 17:21:49,476 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-11-18 17:21:49,476 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-11-18 17:21:49,476 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-11-18 17:21:49,476 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-11-18 17:21:49,476 INFO  L133        SettingsManager]:  * Trace refinement strategy=CAMEL
[2018-11-18 17:21:49,476 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-11-18 17:21:49,476 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-11-18 17:21:49,476 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_1d76d958-a61b-4e5c-994b-b41bf10fcecc/bin-2019/uautomizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 534681b11e8e68e6058985d885b01f2cbfa43e5b
[2018-11-18 17:21:49,498 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-11-18 17:21:49,508 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-11-18 17:21:49,511 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-11-18 17:21:49,512 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-11-18 17:21:49,512 INFO  L276        PluginConnector]: CDTParser initialized
[2018-11-18 17:21:49,513 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1d76d958-a61b-4e5c-994b-b41bf10fcecc/bin-2019/uautomizer/../../sv-benchmarks/c/heap-manipulation/merge_sort_false-unreach-call_false-valid-memcleanup.i
[2018-11-18 17:21:49,559 INFO  L221              CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1d76d958-a61b-4e5c-994b-b41bf10fcecc/bin-2019/uautomizer/data/d0b0d3644/458ace0ffd02429a9025fabc37fdb3ab/FLAGc9f9f27f0
[2018-11-18 17:21:50,008 INFO  L307              CDTParser]: Found 1 translation units.
[2018-11-18 17:21:50,008 INFO  L161              CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1d76d958-a61b-4e5c-994b-b41bf10fcecc/sv-benchmarks/c/heap-manipulation/merge_sort_false-unreach-call_false-valid-memcleanup.i
[2018-11-18 17:21:50,015 INFO  L355              CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1d76d958-a61b-4e5c-994b-b41bf10fcecc/bin-2019/uautomizer/data/d0b0d3644/458ace0ffd02429a9025fabc37fdb3ab/FLAGc9f9f27f0
[2018-11-18 17:21:50,026 INFO  L363              CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1d76d958-a61b-4e5c-994b-b41bf10fcecc/bin-2019/uautomizer/data/d0b0d3644/458ace0ffd02429a9025fabc37fdb3ab
[2018-11-18 17:21:50,029 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-11-18 17:21:50,030 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2018-11-18 17:21:50,031 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-11-18 17:21:50,031 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-11-18 17:21:50,034 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-11-18 17:21:50,035 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:21:50" (1/1) ...
[2018-11-18 17:21:50,037 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ece329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:21:50, skipping insertion in model container
[2018-11-18 17:21:50,037 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:21:50" (1/1) ...
[2018-11-18 17:21:50,046 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2018-11-18 17:21:50,077 INFO  L176         MainTranslator]: Built tables and reachable declarations
[2018-11-18 17:21:50,288 INFO  L201          PostProcessor]: Analyzing one entry point: main
[2018-11-18 17:21:50,294 INFO  L191         MainTranslator]: Completed pre-run
[2018-11-18 17:21:50,371 INFO  L201          PostProcessor]: Analyzing one entry point: main
[2018-11-18 17:21:50,404 INFO  L195         MainTranslator]: Completed translation
[2018-11-18 17:21:50,404 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:21:50 WrapperNode
[2018-11-18 17:21:50,404 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-11-18 17:21:50,404 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-11-18 17:21:50,405 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-11-18 17:21:50,405 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-11-18 17:21:50,412 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:21:50" (1/1) ...
[2018-11-18 17:21:50,412 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:21:50" (1/1) ...
[2018-11-18 17:21:50,422 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:21:50" (1/1) ...
[2018-11-18 17:21:50,422 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:21:50" (1/1) ...
[2018-11-18 17:21:50,436 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:21:50" (1/1) ...
[2018-11-18 17:21:50,442 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:21:50" (1/1) ...
[2018-11-18 17:21:50,444 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:21:50" (1/1) ...
[2018-11-18 17:21:50,448 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-11-18 17:21:50,449 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-11-18 17:21:50,449 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-11-18 17:21:50,449 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-11-18 17:21:50,449 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:21:50" (1/1) ...
No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1d76d958-a61b-4e5c-994b-b41bf10fcecc/bin-2019/uautomizer/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-11-18 17:21:50,483 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-11-18 17:21:50,483 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-11-18 17:21:50,483 INFO  L138     BoogieDeclarations]: Found implementation of procedure __bswap_32
[2018-11-18 17:21:50,484 INFO  L138     BoogieDeclarations]: Found implementation of procedure __bswap_64
[2018-11-18 17:21:50,484 INFO  L138     BoogieDeclarations]: Found implementation of procedure fail
[2018-11-18 17:21:50,484 INFO  L138     BoogieDeclarations]: Found implementation of procedure merge_single_node
[2018-11-18 17:21:50,484 INFO  L138     BoogieDeclarations]: Found implementation of procedure merge_pair
[2018-11-18 17:21:50,484 INFO  L138     BoogieDeclarations]: Found implementation of procedure seq_sort_core
[2018-11-18 17:21:50,484 INFO  L138     BoogieDeclarations]: Found implementation of procedure inspect_before
[2018-11-18 17:21:50,484 INFO  L138     BoogieDeclarations]: Found implementation of procedure inspect_after
[2018-11-18 17:21:50,484 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2018-11-18 17:21:50,484 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2018-11-18 17:21:50,485 INFO  L130     BoogieDeclarations]: Found specification of procedure __bswap_32
[2018-11-18 17:21:50,485 INFO  L130     BoogieDeclarations]: Found specification of procedure __bswap_64
[2018-11-18 17:21:50,485 INFO  L130     BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2018-11-18 17:21:50,485 INFO  L130     BoogieDeclarations]: Found specification of procedure atof
[2018-11-18 17:21:50,485 INFO  L130     BoogieDeclarations]: Found specification of procedure atoi
[2018-11-18 17:21:50,485 INFO  L130     BoogieDeclarations]: Found specification of procedure atol
[2018-11-18 17:21:50,485 INFO  L130     BoogieDeclarations]: Found specification of procedure atoll
[2018-11-18 17:21:50,485 INFO  L130     BoogieDeclarations]: Found specification of procedure strtod
[2018-11-18 17:21:50,486 INFO  L130     BoogieDeclarations]: Found specification of procedure strtof
[2018-11-18 17:21:50,486 INFO  L130     BoogieDeclarations]: Found specification of procedure strtold
[2018-11-18 17:21:50,486 INFO  L130     BoogieDeclarations]: Found specification of procedure strtol
[2018-11-18 17:21:50,486 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoul
[2018-11-18 17:21:50,486 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoq
[2018-11-18 17:21:50,486 INFO  L130     BoogieDeclarations]: Found specification of procedure strtouq
[2018-11-18 17:21:50,486 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoll
[2018-11-18 17:21:50,486 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoull
[2018-11-18 17:21:50,486 INFO  L130     BoogieDeclarations]: Found specification of procedure l64a
[2018-11-18 17:21:50,487 INFO  L130     BoogieDeclarations]: Found specification of procedure a64l
[2018-11-18 17:21:50,487 INFO  L130     BoogieDeclarations]: Found specification of procedure select
[2018-11-18 17:21:50,487 INFO  L130     BoogieDeclarations]: Found specification of procedure pselect
[2018-11-18 17:21:50,487 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2018-11-18 17:21:50,487 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2018-11-18 17:21:50,487 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2018-11-18 17:21:50,487 INFO  L130     BoogieDeclarations]: Found specification of procedure random
[2018-11-18 17:21:50,487 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom
[2018-11-18 17:21:50,487 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate
[2018-11-18 17:21:50,487 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate
[2018-11-18 17:21:50,488 INFO  L130     BoogieDeclarations]: Found specification of procedure random_r
[2018-11-18 17:21:50,488 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom_r
[2018-11-18 17:21:50,488 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate_r
[2018-11-18 17:21:50,488 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate_r
[2018-11-18 17:21:50,488 INFO  L130     BoogieDeclarations]: Found specification of procedure rand
[2018-11-18 17:21:50,488 INFO  L130     BoogieDeclarations]: Found specification of procedure srand
[2018-11-18 17:21:50,488 INFO  L130     BoogieDeclarations]: Found specification of procedure rand_r
[2018-11-18 17:21:50,488 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48
[2018-11-18 17:21:50,488 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48
[2018-11-18 17:21:50,488 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48
[2018-11-18 17:21:50,489 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48
[2018-11-18 17:21:50,489 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48
[2018-11-18 17:21:50,489 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48
[2018-11-18 17:21:50,489 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48
[2018-11-18 17:21:50,489 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48
[2018-11-18 17:21:50,489 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48
[2018-11-18 17:21:50,489 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48_r
[2018-11-18 17:21:50,489 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48_r
[2018-11-18 17:21:50,489 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48_r
[2018-11-18 17:21:50,490 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48_r
[2018-11-18 17:21:50,490 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48_r
[2018-11-18 17:21:50,490 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48_r
[2018-11-18 17:21:50,490 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48_r
[2018-11-18 17:21:50,490 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48_r
[2018-11-18 17:21:50,490 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48_r
[2018-11-18 17:21:50,490 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2018-11-18 17:21:50,490 INFO  L130     BoogieDeclarations]: Found specification of procedure calloc
[2018-11-18 17:21:50,490 INFO  L130     BoogieDeclarations]: Found specification of procedure realloc
[2018-11-18 17:21:50,491 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2018-11-18 17:21:50,491 INFO  L130     BoogieDeclarations]: Found specification of procedure cfree
[2018-11-18 17:21:50,491 INFO  L130     BoogieDeclarations]: Found specification of procedure alloca
[2018-11-18 17:21:50,491 INFO  L130     BoogieDeclarations]: Found specification of procedure valloc
[2018-11-18 17:21:50,491 INFO  L130     BoogieDeclarations]: Found specification of procedure posix_memalign
[2018-11-18 17:21:50,491 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2018-11-18 17:21:50,491 INFO  L130     BoogieDeclarations]: Found specification of procedure atexit
[2018-11-18 17:21:50,491 INFO  L130     BoogieDeclarations]: Found specification of procedure on_exit
[2018-11-18 17:21:50,491 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2018-11-18 17:21:50,492 INFO  L130     BoogieDeclarations]: Found specification of procedure _Exit
[2018-11-18 17:21:50,492 INFO  L130     BoogieDeclarations]: Found specification of procedure getenv
[2018-11-18 17:21:50,492 INFO  L130     BoogieDeclarations]: Found specification of procedure putenv
[2018-11-18 17:21:50,492 INFO  L130     BoogieDeclarations]: Found specification of procedure setenv
[2018-11-18 17:21:50,492 INFO  L130     BoogieDeclarations]: Found specification of procedure unsetenv
[2018-11-18 17:21:50,492 INFO  L130     BoogieDeclarations]: Found specification of procedure clearenv
[2018-11-18 17:21:50,492 INFO  L130     BoogieDeclarations]: Found specification of procedure mktemp
[2018-11-18 17:21:50,492 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemp
[2018-11-18 17:21:50,492 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemps
[2018-11-18 17:21:50,492 INFO  L130     BoogieDeclarations]: Found specification of procedure mkdtemp
[2018-11-18 17:21:50,493 INFO  L130     BoogieDeclarations]: Found specification of procedure system
[2018-11-18 17:21:50,493 INFO  L130     BoogieDeclarations]: Found specification of procedure realpath
[2018-11-18 17:21:50,493 INFO  L130     BoogieDeclarations]: Found specification of procedure bsearch
[2018-11-18 17:21:50,493 INFO  L130     BoogieDeclarations]: Found specification of procedure qsort
[2018-11-18 17:21:50,493 INFO  L130     BoogieDeclarations]: Found specification of procedure abs
[2018-11-18 17:21:50,493 INFO  L130     BoogieDeclarations]: Found specification of procedure labs
[2018-11-18 17:21:50,493 INFO  L130     BoogieDeclarations]: Found specification of procedure llabs
[2018-11-18 17:21:50,493 INFO  L130     BoogieDeclarations]: Found specification of procedure div
[2018-11-18 17:21:50,493 INFO  L130     BoogieDeclarations]: Found specification of procedure ldiv
[2018-11-18 17:21:50,493 INFO  L130     BoogieDeclarations]: Found specification of procedure lldiv
[2018-11-18 17:21:50,493 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt
[2018-11-18 17:21:50,494 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt
[2018-11-18 17:21:50,494 INFO  L130     BoogieDeclarations]: Found specification of procedure gcvt
[2018-11-18 17:21:50,494 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt
[2018-11-18 17:21:50,494 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt
[2018-11-18 17:21:50,494 INFO  L130     BoogieDeclarations]: Found specification of procedure qgcvt
[2018-11-18 17:21:50,494 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt_r
[2018-11-18 17:21:50,494 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt_r
[2018-11-18 17:21:50,494 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt_r
[2018-11-18 17:21:50,494 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt_r
[2018-11-18 17:21:50,494 INFO  L130     BoogieDeclarations]: Found specification of procedure mblen
[2018-11-18 17:21:50,495 INFO  L130     BoogieDeclarations]: Found specification of procedure mbtowc
[2018-11-18 17:21:50,495 INFO  L130     BoogieDeclarations]: Found specification of procedure wctomb
[2018-11-18 17:21:50,495 INFO  L130     BoogieDeclarations]: Found specification of procedure mbstowcs
[2018-11-18 17:21:50,495 INFO  L130     BoogieDeclarations]: Found specification of procedure wcstombs
[2018-11-18 17:21:50,495 INFO  L130     BoogieDeclarations]: Found specification of procedure rpmatch
[2018-11-18 17:21:50,495 INFO  L130     BoogieDeclarations]: Found specification of procedure getsubopt
[2018-11-18 17:21:50,495 INFO  L130     BoogieDeclarations]: Found specification of procedure getloadavg
[2018-11-18 17:21:50,495 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2018-11-18 17:21:50,495 INFO  L130     BoogieDeclarations]: Found specification of procedure fail
[2018-11-18 17:21:50,495 INFO  L130     BoogieDeclarations]: Found specification of procedure merge_single_node
[2018-11-18 17:21:50,495 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2018-11-18 17:21:50,496 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2018-11-18 17:21:50,496 INFO  L130     BoogieDeclarations]: Found specification of procedure merge_pair
[2018-11-18 17:21:50,496 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.alloc
[2018-11-18 17:21:50,496 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2018-11-18 17:21:50,496 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2018-11-18 17:21:50,496 INFO  L130     BoogieDeclarations]: Found specification of procedure seq_sort_core
[2018-11-18 17:21:50,496 INFO  L130     BoogieDeclarations]: Found specification of procedure inspect_before
[2018-11-18 17:21:50,496 INFO  L130     BoogieDeclarations]: Found specification of procedure inspect_after
[2018-11-18 17:21:50,496 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2018-11-18 17:21:50,497 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2018-11-18 17:21:50,497 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-11-18 17:21:50,497 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-11-18 17:21:50,497 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~int
[2018-11-18 17:21:50,932 INFO  L278             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-11-18 17:21:50,933 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:21:50 BoogieIcfgContainer
[2018-11-18 17:21:50,933 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-11-18 17:21:50,933 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-11-18 17:21:50,934 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-11-18 17:21:50,936 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-11-18 17:21:50,936 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:21:50" (1/3) ...
[2018-11-18 17:21:50,937 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58004ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:21:50, skipping insertion in model container
[2018-11-18 17:21:50,937 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:21:50" (2/3) ...
[2018-11-18 17:21:50,937 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58004ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:21:50, skipping insertion in model container
[2018-11-18 17:21:50,937 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:21:50" (3/3) ...
[2018-11-18 17:21:50,939 INFO  L112   eAbstractionObserver]: Analyzing ICFG merge_sort_false-unreach-call_false-valid-memcleanup.i
[2018-11-18 17:21:50,944 INFO  L136   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-11-18 17:21:50,950 INFO  L148   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-11-18 17:21:50,959 INFO  L257      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2018-11-18 17:21:50,980 INFO  L133   ementStrategyFactory]: Using default assertion order modulation
[2018-11-18 17:21:50,981 INFO  L382      AbstractCegarLoop]: Interprodecural is true
[2018-11-18 17:21:50,981 INFO  L383      AbstractCegarLoop]: Hoare is true
[2018-11-18 17:21:50,981 INFO  L384      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-11-18 17:21:50,981 INFO  L385      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-11-18 17:21:50,981 INFO  L386      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-11-18 17:21:50,981 INFO  L387      AbstractCegarLoop]: Difference is false
[2018-11-18 17:21:50,981 INFO  L388      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-11-18 17:21:50,981 INFO  L393      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-11-18 17:21:50,994 INFO  L276                IsEmpty]: Start isEmpty. Operand 124 states.
[2018-11-18 17:21:50,999 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2018-11-18 17:21:50,999 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-18 17:21:50,999 INFO  L375         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-18 17:21:51,002 INFO  L423      AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-18 17:21:51,006 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-18 17:21:51,007 INFO  L82        PathProgramCache]: Analyzing trace with hash 993254836, now seen corresponding path program 1 times
[2018-11-18 17:21:51,008 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-18 17:21:51,009 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-18 17:21:51,042 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 17:21:51,042 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-18 17:21:51,042 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 17:21:51,062 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-18 17:21:51,084 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-18 17:21:51,085 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-18 17:21:51,086 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-11-18 17:21:51,088 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 2 states
[2018-11-18 17:21:51,095 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2018-11-18 17:21:51,096 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2018-11-18 17:21:51,097 INFO  L87              Difference]: Start difference. First operand 124 states. Second operand 2 states.
[2018-11-18 17:21:51,120 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-18 17:21:51,121 INFO  L93              Difference]: Finished difference Result 240 states and 391 transitions.
[2018-11-18 17:21:51,121 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2018-11-18 17:21:51,122 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 14
[2018-11-18 17:21:51,122 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-18 17:21:51,131 INFO  L225             Difference]: With dead ends: 240
[2018-11-18 17:21:51,131 INFO  L226             Difference]: Without dead ends: 111
[2018-11-18 17:21:51,134 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2018-11-18 17:21:51,144 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 111 states.
[2018-11-18 17:21:51,160 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111.
[2018-11-18 17:21:51,161 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 111 states.
[2018-11-18 17:21:51,162 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 134 transitions.
[2018-11-18 17:21:51,163 INFO  L78                 Accepts]: Start accepts. Automaton has 111 states and 134 transitions. Word has length 14
[2018-11-18 17:21:51,163 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-18 17:21:51,163 INFO  L480      AbstractCegarLoop]: Abstraction has 111 states and 134 transitions.
[2018-11-18 17:21:51,163 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2018-11-18 17:21:51,163 INFO  L276                IsEmpty]: Start isEmpty. Operand 111 states and 134 transitions.
[2018-11-18 17:21:51,164 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2018-11-18 17:21:51,164 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-18 17:21:51,164 INFO  L375         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-18 17:21:51,164 INFO  L423      AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-18 17:21:51,164 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-18 17:21:51,165 INFO  L82        PathProgramCache]: Analyzing trace with hash 213030440, now seen corresponding path program 1 times
[2018-11-18 17:21:51,165 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-18 17:21:51,165 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-18 17:21:51,166 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 17:21:51,166 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-18 17:21:51,166 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 17:21:51,173 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-18 17:21:51,206 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-18 17:21:51,206 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-18 17:21:51,206 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-11-18 17:21:51,207 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-11-18 17:21:51,208 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-11-18 17:21:51,208 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-11-18 17:21:51,208 INFO  L87              Difference]: Start difference. First operand 111 states and 134 transitions. Second operand 3 states.
[2018-11-18 17:21:51,239 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-18 17:21:51,239 INFO  L93              Difference]: Finished difference Result 216 states and 262 transitions.
[2018-11-18 17:21:51,239 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-11-18 17:21:51,239 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 16
[2018-11-18 17:21:51,239 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-18 17:21:51,240 INFO  L225             Difference]: With dead ends: 216
[2018-11-18 17:21:51,241 INFO  L226             Difference]: Without dead ends: 118
[2018-11-18 17:21:51,241 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-11-18 17:21:51,242 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 118 states.
[2018-11-18 17:21:51,249 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114.
[2018-11-18 17:21:51,249 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 114 states.
[2018-11-18 17:21:51,250 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 137 transitions.
[2018-11-18 17:21:51,250 INFO  L78                 Accepts]: Start accepts. Automaton has 114 states and 137 transitions. Word has length 16
[2018-11-18 17:21:51,250 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-18 17:21:51,251 INFO  L480      AbstractCegarLoop]: Abstraction has 114 states and 137 transitions.
[2018-11-18 17:21:51,251 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-11-18 17:21:51,251 INFO  L276                IsEmpty]: Start isEmpty. Operand 114 states and 137 transitions.
[2018-11-18 17:21:51,251 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2018-11-18 17:21:51,251 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-18 17:21:51,251 INFO  L375         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-18 17:21:51,251 INFO  L423      AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-18 17:21:51,252 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-18 17:21:51,252 INFO  L82        PathProgramCache]: Analyzing trace with hash 1390052738, now seen corresponding path program 1 times
[2018-11-18 17:21:51,252 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-18 17:21:51,252 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-18 17:21:51,253 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 17:21:51,253 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-18 17:21:51,253 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 17:21:51,269 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-18 17:21:51,316 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-18 17:21:51,316 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-18 17:21:51,317 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2018-11-18 17:21:51,317 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-11-18 17:21:51,317 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-11-18 17:21:51,317 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2018-11-18 17:21:51,317 INFO  L87              Difference]: Start difference. First operand 114 states and 137 transitions. Second operand 6 states.
[2018-11-18 17:21:51,457 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-18 17:21:51,457 INFO  L93              Difference]: Finished difference Result 163 states and 196 transitions.
[2018-11-18 17:21:51,458 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2018-11-18 17:21:51,458 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 23
[2018-11-18 17:21:51,458 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-18 17:21:51,459 INFO  L225             Difference]: With dead ends: 163
[2018-11-18 17:21:51,459 INFO  L226             Difference]: Without dead ends: 158
[2018-11-18 17:21:51,460 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2018-11-18 17:21:51,460 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 158 states.
[2018-11-18 17:21:51,470 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 119.
[2018-11-18 17:21:51,471 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 119 states.
[2018-11-18 17:21:51,472 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions.
[2018-11-18 17:21:51,472 INFO  L78                 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 23
[2018-11-18 17:21:51,472 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-18 17:21:51,472 INFO  L480      AbstractCegarLoop]: Abstraction has 119 states and 142 transitions.
[2018-11-18 17:21:51,472 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-11-18 17:21:51,472 INFO  L276                IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions.
[2018-11-18 17:21:51,473 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2018-11-18 17:21:51,473 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-18 17:21:51,473 INFO  L375         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-18 17:21:51,473 INFO  L423      AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-18 17:21:51,473 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-18 17:21:51,474 INFO  L82        PathProgramCache]: Analyzing trace with hash 310598650, now seen corresponding path program 1 times
[2018-11-18 17:21:51,474 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-18 17:21:51,474 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-18 17:21:51,475 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 17:21:51,475 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-18 17:21:51,475 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 17:21:51,488 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-18 17:21:51,541 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2018-11-18 17:21:51,541 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-18 17:21:51,541 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2018-11-18 17:21:51,541 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-11-18 17:21:51,542 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-11-18 17:21:51,542 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2018-11-18 17:21:51,542 INFO  L87              Difference]: Start difference. First operand 119 states and 142 transitions. Second operand 5 states.
[2018-11-18 17:21:51,679 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-18 17:21:51,679 INFO  L93              Difference]: Finished difference Result 121 states and 143 transitions.
[2018-11-18 17:21:51,680 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2018-11-18 17:21:51,680 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 31
[2018-11-18 17:21:51,680 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-18 17:21:51,681 INFO  L225             Difference]: With dead ends: 121
[2018-11-18 17:21:51,681 INFO  L226             Difference]: Without dead ends: 118
[2018-11-18 17:21:51,681 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2018-11-18 17:21:51,682 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 118 states.
[2018-11-18 17:21:51,689 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118.
[2018-11-18 17:21:51,690 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 118 states.
[2018-11-18 17:21:51,690 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 140 transitions.
[2018-11-18 17:21:51,691 INFO  L78                 Accepts]: Start accepts. Automaton has 118 states and 140 transitions. Word has length 31
[2018-11-18 17:21:51,691 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-18 17:21:51,691 INFO  L480      AbstractCegarLoop]: Abstraction has 118 states and 140 transitions.
[2018-11-18 17:21:51,691 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-11-18 17:21:51,691 INFO  L276                IsEmpty]: Start isEmpty. Operand 118 states and 140 transitions.
[2018-11-18 17:21:51,692 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2018-11-18 17:21:51,692 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-18 17:21:51,692 INFO  L375         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-18 17:21:51,692 INFO  L423      AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-18 17:21:51,692 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-18 17:21:51,693 INFO  L82        PathProgramCache]: Analyzing trace with hash -1477891468, now seen corresponding path program 1 times
[2018-11-18 17:21:51,693 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-18 17:21:51,693 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-18 17:21:51,694 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 17:21:51,694 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-18 17:21:51,694 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 17:21:51,705 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-18 17:21:51,748 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2018-11-18 17:21:51,748 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-18 17:21:51,748 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2018-11-18 17:21:51,749 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-11-18 17:21:51,749 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-11-18 17:21:51,749 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2018-11-18 17:21:51,749 INFO  L87              Difference]: Start difference. First operand 118 states and 140 transitions. Second operand 5 states.
[2018-11-18 17:21:51,891 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-18 17:21:51,891 INFO  L93              Difference]: Finished difference Result 120 states and 141 transitions.
[2018-11-18 17:21:51,892 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2018-11-18 17:21:51,892 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 31
[2018-11-18 17:21:51,892 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-18 17:21:51,893 INFO  L225             Difference]: With dead ends: 120
[2018-11-18 17:21:51,893 INFO  L226             Difference]: Without dead ends: 117
[2018-11-18 17:21:51,893 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2018-11-18 17:21:51,893 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 117 states.
[2018-11-18 17:21:51,901 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117.
[2018-11-18 17:21:51,902 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 117 states.
[2018-11-18 17:21:51,902 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 138 transitions.
[2018-11-18 17:21:51,902 INFO  L78                 Accepts]: Start accepts. Automaton has 117 states and 138 transitions. Word has length 31
[2018-11-18 17:21:51,903 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-18 17:21:51,903 INFO  L480      AbstractCegarLoop]: Abstraction has 117 states and 138 transitions.
[2018-11-18 17:21:51,903 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-11-18 17:21:51,903 INFO  L276                IsEmpty]: Start isEmpty. Operand 117 states and 138 transitions.
[2018-11-18 17:21:51,903 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2018-11-18 17:21:51,903 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-18 17:21:51,904 INFO  L375         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-18 17:21:51,904 INFO  L423      AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-18 17:21:51,904 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-18 17:21:51,904 INFO  L82        PathProgramCache]: Analyzing trace with hash 1496433235, now seen corresponding path program 1 times
[2018-11-18 17:21:51,904 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-18 17:21:51,904 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-18 17:21:51,905 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 17:21:51,905 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-18 17:21:51,905 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 17:21:51,917 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-18 17:21:51,964 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-18 17:21:51,965 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-18 17:21:51,965 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2018-11-18 17:21:51,965 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-11-18 17:21:51,965 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-11-18 17:21:51,965 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2018-11-18 17:21:51,966 INFO  L87              Difference]: Start difference. First operand 117 states and 138 transitions. Second operand 7 states.
[2018-11-18 17:21:52,107 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-18 17:21:52,107 INFO  L93              Difference]: Finished difference Result 155 states and 181 transitions.
[2018-11-18 17:21:52,107 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-11-18 17:21:52,108 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 34
[2018-11-18 17:21:52,108 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-18 17:21:52,109 INFO  L225             Difference]: With dead ends: 155
[2018-11-18 17:21:52,109 INFO  L226             Difference]: Without dead ends: 152
[2018-11-18 17:21:52,109 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2018-11-18 17:21:52,110 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 152 states.
[2018-11-18 17:21:52,117 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 123.
[2018-11-18 17:21:52,117 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 123 states.
[2018-11-18 17:21:52,117 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions.
[2018-11-18 17:21:52,118 INFO  L78                 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 34
[2018-11-18 17:21:52,118 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-18 17:21:52,118 INFO  L480      AbstractCegarLoop]: Abstraction has 123 states and 144 transitions.
[2018-11-18 17:21:52,118 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2018-11-18 17:21:52,118 INFO  L276                IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions.
[2018-11-18 17:21:52,118 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2018-11-18 17:21:52,118 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-18 17:21:52,119 INFO  L375         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-18 17:21:52,119 INFO  L423      AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-18 17:21:52,119 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-18 17:21:52,119 INFO  L82        PathProgramCache]: Analyzing trace with hash -408502051, now seen corresponding path program 1 times
[2018-11-18 17:21:52,119 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-18 17:21:52,119 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-18 17:21:52,120 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 17:21:52,120 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-18 17:21:52,121 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 17:21:52,128 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-18 17:21:52,175 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-18 17:21:52,175 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-18 17:21:52,175 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2018-11-18 17:21:52,176 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-11-18 17:21:52,176 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-11-18 17:21:52,176 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2018-11-18 17:21:52,176 INFO  L87              Difference]: Start difference. First operand 123 states and 144 transitions. Second operand 7 states.
[2018-11-18 17:21:52,313 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-18 17:21:52,313 INFO  L93              Difference]: Finished difference Result 154 states and 179 transitions.
[2018-11-18 17:21:52,314 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-11-18 17:21:52,314 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 34
[2018-11-18 17:21:52,314 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-18 17:21:52,315 INFO  L225             Difference]: With dead ends: 154
[2018-11-18 17:21:52,315 INFO  L226             Difference]: Without dead ends: 151
[2018-11-18 17:21:52,315 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2018-11-18 17:21:52,315 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 151 states.
[2018-11-18 17:21:52,320 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 129.
[2018-11-18 17:21:52,320 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 129 states.
[2018-11-18 17:21:52,321 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions.
[2018-11-18 17:21:52,321 INFO  L78                 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 34
[2018-11-18 17:21:52,323 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-18 17:21:52,323 INFO  L480      AbstractCegarLoop]: Abstraction has 129 states and 150 transitions.
[2018-11-18 17:21:52,323 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2018-11-18 17:21:52,323 INFO  L276                IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions.
[2018-11-18 17:21:52,324 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2018-11-18 17:21:52,324 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-18 17:21:52,324 INFO  L375         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-18 17:21:52,324 INFO  L423      AbstractCegarLoop]: === Iteration 8 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-18 17:21:52,325 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-18 17:21:52,325 INFO  L82        PathProgramCache]: Analyzing trace with hash -1691091992, now seen corresponding path program 1 times
[2018-11-18 17:21:52,325 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-18 17:21:52,325 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-18 17:21:52,326 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 17:21:52,326 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-18 17:21:52,326 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-18 17:21:52,336 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-11-18 17:21:52,346 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-11-18 17:21:52,365 INFO  L442         BasicCegarLoop]: Counterexample might be feasible
[2018-11-18 17:21:52,392 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:21:52 BoogieIcfgContainer
[2018-11-18 17:21:52,393 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-11-18 17:21:52,394 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2018-11-18 17:21:52,394 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2018-11-18 17:21:52,394 INFO  L276        PluginConnector]: Witness Printer initialized
[2018-11-18 17:21:52,394 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:21:50" (3/4) ...
[2018-11-18 17:21:52,396 INFO  L138         WitnessPrinter]: Generating witness for reachability counterexample
[2018-11-18 17:21:52,433 INFO  L145         WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1d76d958-a61b-4e5c-994b-b41bf10fcecc/bin-2019/uautomizer/witness.graphml
[2018-11-18 17:21:52,433 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2018-11-18 17:21:52,434 INFO  L168              Benchmark]: Toolchain (without parser) took 2404.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -141.4 MB). Peak memory consumption was 166.0 kB. Max. memory is 11.5 GB.
[2018-11-18 17:21:52,435 INFO  L168              Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB.
[2018-11-18 17:21:52,436 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 373.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -168.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB.
[2018-11-18 17:21:52,436 INFO  L168              Benchmark]: Boogie Preprocessor took 44.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB.
[2018-11-18 17:21:52,436 INFO  L168              Benchmark]: RCFGBuilder took 484.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 68.6 MB). Peak memory consumption was 68.6 MB. Max. memory is 11.5 GB.
[2018-11-18 17:21:52,437 INFO  L168              Benchmark]: TraceAbstraction took 1459.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -46.9 MB). There was no memory consumed. Max. memory is 11.5 GB.
[2018-11-18 17:21:52,437 INFO  L168              Benchmark]: Witness Printer took 39.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 11.5 GB.
[2018-11-18 17:21:52,439 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB.
 * CACSL2BoogieTranslator took 373.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -168.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB.
 * Boogie Preprocessor took 44.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB.
 * RCFGBuilder took 484.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 68.6 MB). Peak memory consumption was 68.6 MB. Max. memory is 11.5 GB.
 * TraceAbstraction took 1459.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -46.9 MB). There was no memory consumed. Max. memory is 11.5 GB.
 * Witness Printer took 39.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 11.5 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 554]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L627]               struct list *data = ((void *)0);
        VAL          [data={0:0}]
[L628]  COND TRUE    __VERIFIER_nondet_int()
[L629]  EXPR, FCALL  malloc(sizeof *node)
[L629]               struct node *node = malloc(sizeof *node);
        VAL          [data={0:0}, malloc(sizeof *node)={11:0}, node={11:0}]
[L630]  COND FALSE   !(!node)
        VAL          [data={0:0}, malloc(sizeof *node)={11:0}, node={11:0}]
[L632]  FCALL        node->next = node
[L633]  FCALL        node->value = __VERIFIER_nondet_int()
[L634]  EXPR, FCALL  malloc(sizeof *item)
[L634]               struct list *item = malloc(sizeof *item);
        VAL          [data={0:0}, item={10:0}, malloc(sizeof *item)={10:0}, malloc(sizeof *node)={11:0}, node={11:0}]
[L635]  COND FALSE   !(!item)
        VAL          [data={0:0}, item={10:0}, malloc(sizeof *item)={10:0}, malloc(sizeof *node)={11:0}, node={11:0}]
[L637]  FCALL        item->slist = node
[L638]  FCALL        item->next = data
[L639]               data = item
        VAL          [data={10:0}, item={10:0}, malloc(sizeof *item)={10:0}, malloc(sizeof *node)={11:0}, node={11:0}]
[L628]  COND FALSE   !(__VERIFIER_nondet_int())
[L641]  COND FALSE   !(!data)
        VAL          [data={10:0}, item={10:0}, malloc(sizeof *item)={10:0}, malloc(sizeof *node)={11:0}, node={11:0}]
[L643]  CALL         inspect_before(data)
        VAL          [shape={10:0}]
[L604]  COND FALSE   !(!(shape))
        VAL          [shape={10:0}, shape={10:0}]
[L604]  COND FALSE   !(0)
        VAL          [shape={10:0}, shape={10:0}]
[L605]  FCALL        shape->next
        VAL          [shape={10:0}, shape={10:0}, shape->next={0:0}]
[L605]  COND FALSE   !(shape->next)
[L611]  COND FALSE   !(!(shape))
        VAL          [shape={10:0}, shape={10:0}]
[L611]  COND FALSE   !(0)
        VAL          [shape={10:0}, shape={10:0}]
[L612]  EXPR, FCALL  shape->next
        VAL          [shape={10:0}, shape={10:0}, shape->next={0:0}]
[L612]  COND FALSE   !(!(shape->next == ((void *)0)))
[L612]  COND FALSE   !(0)
        VAL          [shape={10:0}, shape={10:0}]
[L613]  EXPR, FCALL  shape->slist
        VAL          [shape={10:0}, shape={10:0}, shape->slist={11:0}]
[L613]  COND FALSE   !(!(shape->slist))
[L613]  COND FALSE   !(0)
        VAL          [shape={10:0}, shape={10:0}]
[L614]  EXPR, FCALL  shape->slist
[L614]  EXPR, FCALL  shape->slist->next
        VAL          [shape={10:0}, shape={10:0}, shape->slist={11:0}, shape->slist->next={11:0}]
[L614]  COND TRUE    !(shape->slist->next == ((void *)0))
[L614]  CALL         fail()
[L554]               __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 11 procedures, 130 locations, 1 error locations. UNSAFE Result, 1.4s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 870 SDtfs, 385 SDslu, 2015 SDs, 0 SdLazy, 624 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 94 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 220 NumberOfCodeBlocks, 220 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 21242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 15/15 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...