./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label07.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 839c364b
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71975156-7ca9-4e8b-9e30-a4f7c04dc122/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71975156-7ca9-4e8b-9e30-a4f7c04dc122/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71975156-7ca9-4e8b-9e30-a4f7c04dc122/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71975156-7ca9-4e8b-9e30-a4f7c04dc122/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label07.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71975156-7ca9-4e8b-9e30-a4f7c04dc122/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71975156-7ca9-4e8b-9e30-a4f7c04dc122/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5bb36cdcbc225abd60c61eccdaa597a3442e92ca23b8643d9813014b218e0569
--- Real Ultimate output ---
This is Ultimate 0.2.2-hotfix-svcomp22-839c364
[2021-12-06 19:39:09,606 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-12-06 19:39:09,608 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-06 19:39:09,629 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-06 19:39:09,630 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-06 19:39:09,630 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-06 19:39:09,632 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-06 19:39:09,633 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-06 19:39:09,635 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-06 19:39:09,635 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-06 19:39:09,636 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-12-06 19:39:09,637 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-06 19:39:09,638 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-06 19:39:09,638 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-06 19:39:09,640 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-06 19:39:09,641 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-06 19:39:09,642 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-06 19:39:09,642 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-06 19:39:09,644 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-06 19:39:09,646 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-06 19:39:09,648 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-06 19:39:09,649 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-06 19:39:09,650 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-12-06 19:39:09,651 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-06 19:39:09,654 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-06 19:39:09,654 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-06 19:39:09,654 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-06 19:39:09,655 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-06 19:39:09,655 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-06 19:39:09,656 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-06 19:39:09,657 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-06 19:39:09,657 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-06 19:39:09,658 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-06 19:39:09,659 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-06 19:39:09,659 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-06 19:39:09,660 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-06 19:39:09,660 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-06 19:39:09,660 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-06 19:39:09,660 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-06 19:39:09,661 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-06 19:39:09,661 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-12-06 19:39:09,662 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71975156-7ca9-4e8b-9e30-a4f7c04dc122/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-06 19:39:09,686 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-12-06 19:39:09,686 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-06 19:39:09,686 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-06 19:39:09,686 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-06 19:39:09,687 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-06 19:39:09,687 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-06 19:39:09,687 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-06 19:39:09,688 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-12-06 19:39:09,688 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-12-06 19:39:09,688 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-06 19:39:09,688 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-12-06 19:39:09,688 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-12-06 19:39:09,688 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-12-06 19:39:09,688 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-12-06 19:39:09,689 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-12-06 19:39:09,689 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-06 19:39:09,689 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-12-06 19:39:09,689 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-12-06 19:39:09,689 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-12-06 19:39:09,689 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-12-06 19:39:09,689 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-12-06 19:39:09,689 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-06 19:39:09,690 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-12-06 19:39:09,690 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-12-06 19:39:09,690 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 19:39:09,690 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-06 19:39:09,690 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-12-06 19:39:09,690 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-06 19:39:09,690 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-12-06 19:39:09,690 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-06 19:39:09,691 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-12-06 19:39:09,691 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-06 19:39:09,691 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-06 19:39:09,691 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-12-06 19:39:09,691 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71975156-7ca9-4e8b-9e30-a4f7c04dc122/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
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_worker_vcloud-master_on_vcloud-master/run_dir_71975156-7ca9-4e8b-9e30-a4f7c04dc122/bin/uautomizer-DrprNOufMa
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(reach_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 -> 5bb36cdcbc225abd60c61eccdaa597a3442e92ca23b8643d9813014b218e0569
[2021-12-06 19:39:09,879 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-06 19:39:09,895 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-06 19:39:09,897 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-06 19:39:09,898 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-12-06 19:39:09,898 INFO  L275        PluginConnector]: CDTParser initialized
[2021-12-06 19:39:09,899 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71975156-7ca9-4e8b-9e30-a4f7c04dc122/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-rers2012/Problem07_label07.c
[2021-12-06 19:39:09,943 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71975156-7ca9-4e8b-9e30-a4f7c04dc122/bin/uautomizer-DrprNOufMa/data/406133bf4/67305820015e4f00b640d0a82799f5e6/FLAG5109b6086
[2021-12-06 19:39:11,263 INFO  L306              CDTParser]: Found 1 translation units.
[2021-12-06 19:39:11,263 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71975156-7ca9-4e8b-9e30-a4f7c04dc122/sv-benchmarks/c/eca-rers2012/Problem07_label07.c
[2021-12-06 19:39:11,408 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71975156-7ca9-4e8b-9e30-a4f7c04dc122/bin/uautomizer-DrprNOufMa/data/406133bf4/67305820015e4f00b640d0a82799f5e6/FLAG5109b6086
[2021-12-06 19:39:11,474 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71975156-7ca9-4e8b-9e30-a4f7c04dc122/bin/uautomizer-DrprNOufMa/data/406133bf4/67305820015e4f00b640d0a82799f5e6
[2021-12-06 19:39:11,476 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-06 19:39:11,478 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-06 19:39:11,479 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-06 19:39:11,479 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-06 19:39:11,483 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-06 19:39:11,484 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:39:11" (1/1) ...
[2021-12-06 19:39:11,485 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b414ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:11, skipping insertion in model container
[2021-12-06 19:39:11,485 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:39:11" (1/1) ...
[2021-12-06 19:39:11,493 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-12-06 19:39:12,100 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-12-06 19:39:21,776 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71975156-7ca9-4e8b-9e30-a4f7c04dc122/sv-benchmarks/c/eca-rers2012/Problem07_label07.c[2768816,2768829]
[2021-12-06 19:39:21,837 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 19:39:21,843 INFO  L203         MainTranslator]: Completed pre-run
[2021-12-06 19:39:27,909 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71975156-7ca9-4e8b-9e30-a4f7c04dc122/sv-benchmarks/c/eca-rers2012/Problem07_label07.c[2768816,2768829]
[2021-12-06 19:39:27,920 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 19:39:28,642 INFO  L208         MainTranslator]: Completed translation
[2021-12-06 19:39:28,642 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:28 WrapperNode
[2021-12-06 19:39:28,642 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-06 19:39:28,643 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-06 19:39:28,643 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-06 19:39:28,643 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-06 19:39:28,648 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:28" (1/1) ...
[2021-12-06 19:39:29,025 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:28" (1/1) ...
[2021-12-06 19:39:30,451 INFO  L137                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2021-12-06 19:39:30,452 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-06 19:39:30,452 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-06 19:39:30,452 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-06 19:39:30,453 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-12-06 19:39:30,458 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:28" (1/1) ...
[2021-12-06 19:39:30,459 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:28" (1/1) ...
[2021-12-06 19:39:30,716 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:28" (1/1) ...
[2021-12-06 19:39:30,717 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:28" (1/1) ...
[2021-12-06 19:39:31,518 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:28" (1/1) ...
[2021-12-06 19:39:31,638 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:28" (1/1) ...
[2021-12-06 19:39:31,728 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:28" (1/1) ...
[2021-12-06 19:39:31,995 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-06 19:39:31,996 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-06 19:39:31,996 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-12-06 19:39:31,996 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-12-06 19:39:31,997 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:28" (1/1) ...
[2021-12-06 19:39:32,003 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 19:39:32,012 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71975156-7ca9-4e8b-9e30-a4f7c04dc122/bin/uautomizer-DrprNOufMa/z3
[2021-12-06 19:39:32,024 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71975156-7ca9-4e8b-9e30-a4f7c04dc122/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-12-06 19:39:32,026 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71975156-7ca9-4e8b-9e30-a4f7c04dc122/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-12-06 19:39:32,060 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-06 19:39:32,060 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-06 19:39:32,060 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-06 19:39:32,061 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-06 19:39:32,164 INFO  L236             CfgBuilder]: Building ICFG
[2021-12-06 19:39:32,166 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-06 19:39:55,172 INFO  L277             CfgBuilder]: Performing block encoding
[2021-12-06 19:39:55,211 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-06 19:39:55,212 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-06 19:39:55,221 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:39:55 BoogieIcfgContainer
[2021-12-06 19:39:55,221 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-06 19:39:55,222 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-06 19:39:55,222 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-12-06 19:39:55,225 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-12-06 19:39:55,225 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:39:11" (1/3) ...
[2021-12-06 19:39:55,225 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4619116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:39:55, skipping insertion in model container
[2021-12-06 19:39:55,225 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:28" (2/3) ...
[2021-12-06 19:39:55,226 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4619116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:39:55, skipping insertion in model container
[2021-12-06 19:39:55,226 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:39:55" (3/3) ...
[2021-12-06 19:39:55,227 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem07_label07.c
[2021-12-06 19:39:55,231 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-06 19:39:55,231 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-06 19:39:55,287 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-06 19:39:55,293 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-12-06 19:39:55,293 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-06 19:39:55,405 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:39:56,000 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10099
[2021-12-06 19:39:56,000 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:39:56,006 INFO  L514         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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, 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, 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, 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, 1, 1]
[2021-12-06 19:39:56,008 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:39:56,012 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:39:56,017 INFO  L85        PathProgramCache]: Analyzing trace with hash 1371354794, now seen corresponding path program 1 times
[2021-12-06 19:39:56,023 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:39:56,024 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159611854]
[2021-12-06 19:39:56,026 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:39:56,027 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:39:57,950 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:40:19,062 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 19:40:19,062 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:40:19,063 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159611854]
[2021-12-06 19:40:19,063 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159611854] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:40:19,063 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:40:19,065 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:40:19,066 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619307452]
[2021-12-06 19:40:19,067 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:40:19,093 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:40:19,094 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:40:19,113 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:40:19,113 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:40:19,139 INFO  L87              Difference]: Start difference. First operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 3366.0) internal successors, (10098), 2 states have internal predecessors, (10098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:40:42,447 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:40:42,447 INFO  L93              Difference]: Finished difference Result 30716 states and 61145 transitions.
[2021-12-06 19:40:42,448 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:40:42,451 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3366.0) internal successors, (10098), 2 states have internal predecessors, (10098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10098
[2021-12-06 19:40:42,468 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:40:42,597 INFO  L225             Difference]: With dead ends: 30716
[2021-12-06 19:40:42,597 INFO  L226             Difference]: Without dead ends: 20384
[2021-12-06 19:40:42,612 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:40:42,614 INFO  L933         BasicCegarLoop]: 5117 mSDtfsCounter, 1986 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 33578 mSolverCounterSat, 7054 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1986 SdHoareTripleChecker+Valid, 5170 SdHoareTripleChecker+Invalid, 40632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7054 IncrementalHoareTripleChecker+Valid, 33578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time
[2021-12-06 19:40:42,615 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1986 Valid, 5170 Invalid, 40632 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7054 Valid, 33578 Invalid, 0 Unknown, 0 Unchecked, 22.8s Time]
[2021-12-06 19:40:42,650 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20384 states.
[2021-12-06 19:40:42,964 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20384 to 20384.
[2021-12-06 19:40:42,993 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20384 states, 20383 states have (on average 1.7444929598194574) internal successors, (35558), 20383 states have internal predecessors, (35558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:40:43,042 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20384 states to 20384 states and 35558 transitions.
[2021-12-06 19:40:43,043 INFO  L78                 Accepts]: Start accepts. Automaton has 20384 states and 35558 transitions. Word has length 10098
[2021-12-06 19:40:43,055 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:40:43,055 INFO  L470      AbstractCegarLoop]: Abstraction has 20384 states and 35558 transitions.
[2021-12-06 19:40:43,057 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3366.0) internal successors, (10098), 2 states have internal predecessors, (10098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:40:43,057 INFO  L276                IsEmpty]: Start isEmpty. Operand 20384 states and 35558 transitions.
[2021-12-06 19:40:43,648 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10103
[2021-12-06 19:40:43,648 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:40:43,653 INFO  L514         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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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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, 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, 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, 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, 1, 1, 1, 1]
[2021-12-06 19:40:43,653 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-06 19:40:43,653 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:40:43,654 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:40:43,659 INFO  L85        PathProgramCache]: Analyzing trace with hash 131429074, now seen corresponding path program 1 times
[2021-12-06 19:40:43,659 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:40:43,660 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454302725]
[2021-12-06 19:40:43,662 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:40:43,662 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:40:44,444 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:40:55,674 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 19:40:55,674 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:40:55,674 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454302725]
[2021-12-06 19:40:55,674 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454302725] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:40:55,675 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:40:55,676 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:40:55,676 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076707781]
[2021-12-06 19:40:55,676 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:40:55,689 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:40:55,690 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:40:55,690 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:40:55,690 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:40:55,694 INFO  L87              Difference]: Start difference. First operand 20384 states and 35558 transitions. Second operand  has 3 states, 3 states have (on average 3367.3333333333335) internal successors, (10102), 2 states have internal predecessors, (10102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:41:18,851 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:41:18,851 INFO  L93              Difference]: Finished difference Result 61146 states and 106669 transitions.
[2021-12-06 19:41:18,852 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:41:18,854 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3367.3333333333335) internal successors, (10102), 2 states have internal predecessors, (10102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10102
[2021-12-06 19:41:18,854 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:41:18,919 INFO  L225             Difference]: With dead ends: 61146
[2021-12-06 19:41:18,920 INFO  L226             Difference]: Without dead ends: 40764
[2021-12-06 19:41:18,939 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:41:18,941 INFO  L933         BasicCegarLoop]: 4835 mSDtfsCounter, 13865 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28700 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13865 SdHoareTripleChecker+Valid, 4884 SdHoareTripleChecker+Invalid, 40458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time
[2021-12-06 19:41:18,941 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13865 Valid, 4884 Invalid, 40458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28700 Invalid, 0 Unknown, 0 Unchecked, 22.7s Time]
[2021-12-06 19:41:18,987 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40764 states.
[2021-12-06 19:41:19,464 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 40764.
[2021-12-06 19:41:19,496 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40764 states, 40763 states have (on average 1.5682113681524912) internal successors, (63925), 40763 states have internal predecessors, (63925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:41:19,553 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40764 states to 40764 states and 63925 transitions.
[2021-12-06 19:41:19,553 INFO  L78                 Accepts]: Start accepts. Automaton has 40764 states and 63925 transitions. Word has length 10102
[2021-12-06 19:41:19,555 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:41:19,555 INFO  L470      AbstractCegarLoop]: Abstraction has 40764 states and 63925 transitions.
[2021-12-06 19:41:19,556 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3367.3333333333335) internal successors, (10102), 2 states have internal predecessors, (10102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:41:19,557 INFO  L276                IsEmpty]: Start isEmpty. Operand 40764 states and 63925 transitions.
[2021-12-06 19:41:20,142 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10104
[2021-12-06 19:41:20,142 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:41:20,147 INFO  L514         BasicCegarLoop]: trace histogram [2, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 19:41:20,147 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-06 19:41:20,147 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:41:20,148 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:41:20,150 INFO  L85        PathProgramCache]: Analyzing trace with hash 1795719794, now seen corresponding path program 1 times
[2021-12-06 19:41:20,150 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:41:20,151 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314849109]
[2021-12-06 19:41:20,152 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:41:20,152 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:41:20,917 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:41:30,471 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 19:41:30,471 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:41:30,472 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314849109]
[2021-12-06 19:41:30,472 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314849109] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:41:30,472 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:41:30,473 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:41:30,474 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915589224]
[2021-12-06 19:41:30,474 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:41:30,480 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:41:30,480 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:41:30,481 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:41:30,481 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:41:30,483 INFO  L87              Difference]: Start difference. First operand 40764 states and 63925 transitions. Second operand  has 3 states, 3 states have (on average 3367.6666666666665) internal successors, (10103), 2 states have internal predecessors, (10103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:41:53,676 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:41:53,676 INFO  L93              Difference]: Finished difference Result 122286 states and 191770 transitions.
[2021-12-06 19:41:53,677 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:41:53,678 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3367.6666666666665) internal successors, (10103), 2 states have internal predecessors, (10103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10103
[2021-12-06 19:41:53,678 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:41:53,755 INFO  L225             Difference]: With dead ends: 122286
[2021-12-06 19:41:53,755 INFO  L226             Difference]: Without dead ends: 81524
[2021-12-06 19:41:53,787 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:41:53,788 INFO  L933         BasicCegarLoop]: 6214 mSDtfsCounter, 12828 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29360 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12828 SdHoareTripleChecker+Valid, 6263 SdHoareTripleChecker+Invalid, 41037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 29360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time
[2021-12-06 19:41:53,788 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12828 Valid, 6263 Invalid, 41037 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 29360 Invalid, 0 Unknown, 0 Unchecked, 22.6s Time]
[2021-12-06 19:41:53,838 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81524 states.
[2021-12-06 19:41:54,460 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81524 to 81524.
[2021-12-06 19:41:54,492 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81524 states, 81523 states have (on average 1.437373501956503) internal successors, (117179), 81523 states have internal predecessors, (117179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:41:54,587 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81524 states to 81524 states and 117179 transitions.
[2021-12-06 19:41:54,587 INFO  L78                 Accepts]: Start accepts. Automaton has 81524 states and 117179 transitions. Word has length 10103
[2021-12-06 19:41:54,589 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:41:54,589 INFO  L470      AbstractCegarLoop]: Abstraction has 81524 states and 117179 transitions.
[2021-12-06 19:41:54,591 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3367.6666666666665) internal successors, (10103), 2 states have internal predecessors, (10103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:41:54,591 INFO  L276                IsEmpty]: Start isEmpty. Operand 81524 states and 117179 transitions.
[2021-12-06 19:41:55,274 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10110
[2021-12-06 19:41:55,274 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:41:55,279 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 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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, 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, 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, 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, 1, 1, 1, 1]
[2021-12-06 19:41:55,279 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-12-06 19:41:55,280 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:41:55,280 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:41:55,283 INFO  L85        PathProgramCache]: Analyzing trace with hash -1461407645, now seen corresponding path program 1 times
[2021-12-06 19:41:55,283 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:41:55,283 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548630298]
[2021-12-06 19:41:55,284 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:41:55,285 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:41:56,287 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:42:06,234 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 19:42:06,234 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:42:06,234 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548630298]
[2021-12-06 19:42:06,234 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548630298] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:42:06,235 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:42:06,236 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:42:06,236 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594470208]
[2021-12-06 19:42:06,236 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:42:06,242 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:42:06,243 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:42:06,243 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:42:06,243 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:42:06,245 INFO  L87              Difference]: Start difference. First operand 81524 states and 117179 transitions. Second operand  has 3 states, 3 states have (on average 3369.6666666666665) internal successors, (10109), 2 states have internal predecessors, (10109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:42:30,925 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:42:30,925 INFO  L93              Difference]: Finished difference Result 244566 states and 351532 transitions.
[2021-12-06 19:42:30,925 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:42:30,927 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3369.6666666666665) internal successors, (10109), 2 states have internal predecessors, (10109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10109
[2021-12-06 19:42:30,927 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:42:31,148 INFO  L225             Difference]: With dead ends: 244566
[2021-12-06 19:42:31,148 INFO  L226             Difference]: Without dead ends: 163044
[2021-12-06 19:42:31,173 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:42:31,175 INFO  L933         BasicCegarLoop]: 6168 mSDtfsCounter, 13400 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27533 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13400 SdHoareTripleChecker+Valid, 6217 SdHoareTripleChecker+Invalid, 40563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time
[2021-12-06 19:42:31,175 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13400 Valid, 6217 Invalid, 40563 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27533 Invalid, 0 Unknown, 0 Unchecked, 23.7s Time]
[2021-12-06 19:42:31,266 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 163044 states.
[2021-12-06 19:42:32,282 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 163044 to 163044.
[2021-12-06 19:42:32,505 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163044 states, 163043 states have (on average 1.3137699870586288) internal successors, (214201), 163043 states have internal predecessors, (214201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:42:32,730 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163044 states to 163044 states and 214201 transitions.
[2021-12-06 19:42:32,730 INFO  L78                 Accepts]: Start accepts. Automaton has 163044 states and 214201 transitions. Word has length 10109
[2021-12-06 19:42:32,732 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:42:32,732 INFO  L470      AbstractCegarLoop]: Abstraction has 163044 states and 214201 transitions.
[2021-12-06 19:42:32,733 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3369.6666666666665) internal successors, (10109), 2 states have internal predecessors, (10109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:42:32,733 INFO  L276                IsEmpty]: Start isEmpty. Operand 163044 states and 214201 transitions.
[2021-12-06 19:42:33,585 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10120
[2021-12-06 19:42:33,585 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:42:33,590 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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, 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, 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, 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, 1, 1, 1, 1]
[2021-12-06 19:42:33,590 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-12-06 19:42:33,590 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:42:33,590 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:42:33,593 INFO  L85        PathProgramCache]: Analyzing trace with hash -803216822, now seen corresponding path program 1 times
[2021-12-06 19:42:33,593 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:42:33,594 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164372039]
[2021-12-06 19:42:33,595 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:42:33,595 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:42:34,452 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:42:45,176 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 19:42:45,176 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:42:45,176 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164372039]
[2021-12-06 19:42:45,177 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164372039] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:42:45,177 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:42:45,178 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:42:45,178 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063012873]
[2021-12-06 19:42:45,179 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:42:45,186 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:42:45,187 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:42:45,187 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:42:45,187 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:42:45,189 INFO  L87              Difference]: Start difference. First operand 163044 states and 214201 transitions. Second operand  has 3 states, 3 states have (on average 3373.0) internal successors, (10119), 2 states have internal predecessors, (10119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:43:07,462 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:43:07,463 INFO  L93              Difference]: Finished difference Result 407606 states and 527576 transitions.
[2021-12-06 19:43:07,463 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:43:07,464 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3373.0) internal successors, (10119), 2 states have internal predecessors, (10119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10119
[2021-12-06 19:43:07,464 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:43:07,720 INFO  L225             Difference]: With dead ends: 407606
[2021-12-06 19:43:07,720 INFO  L226             Difference]: Without dead ends: 244564
[2021-12-06 19:43:07,870 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:43:07,870 INFO  L933         BasicCegarLoop]: 8007 mSDtfsCounter, 11128 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28480 mSolverCounterSat, 7491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11128 SdHoareTripleChecker+Valid, 8056 SdHoareTripleChecker+Invalid, 35971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7491 IncrementalHoareTripleChecker+Valid, 28480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time
[2021-12-06 19:43:07,871 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [11128 Valid, 8056 Invalid, 35971 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7491 Valid, 28480 Invalid, 0 Unknown, 0 Unchecked, 21.1s Time]
[2021-12-06 19:43:08,004 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 244564 states.
[2021-12-06 19:43:09,599 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 244564 to 244564.
[2021-12-06 19:43:09,744 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 244564 states, 244563 states have (on average 1.243888077918573) internal successors, (304209), 244563 states have internal predecessors, (304209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:43:10,055 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 244564 states to 244564 states and 304209 transitions.
[2021-12-06 19:43:10,055 INFO  L78                 Accepts]: Start accepts. Automaton has 244564 states and 304209 transitions. Word has length 10119
[2021-12-06 19:43:10,057 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:43:10,057 INFO  L470      AbstractCegarLoop]: Abstraction has 244564 states and 304209 transitions.
[2021-12-06 19:43:10,058 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3373.0) internal successors, (10119), 2 states have internal predecessors, (10119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:43:10,058 INFO  L276                IsEmpty]: Start isEmpty. Operand 244564 states and 304209 transitions.
[2021-12-06 19:43:11,160 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10149
[2021-12-06 19:43:11,160 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:43:11,163 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 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, 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[2021-12-06 19:43:11,164 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-12-06 19:43:11,164 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:43:11,164 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:43:11,168 INFO  L85        PathProgramCache]: Analyzing trace with hash 2142466751, now seen corresponding path program 1 times
[2021-12-06 19:43:11,168 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:43:11,168 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109790772]
[2021-12-06 19:43:11,170 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:43:11,170 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:43:11,955 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:43:23,444 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 19:43:23,444 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:43:23,444 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109790772]
[2021-12-06 19:43:23,444 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109790772] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:43:23,444 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:43:23,446 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:43:23,446 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167612410]
[2021-12-06 19:43:23,446 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:43:23,452 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:43:23,452 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:43:23,453 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:43:23,453 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:43:23,455 INFO  L87              Difference]: Start difference. First operand 244564 states and 304209 transitions. Second operand  has 3 states, 3 states have (on average 3382.6666666666665) internal successors, (10148), 2 states have internal predecessors, (10148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:43:49,252 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:43:49,252 INFO  L93              Difference]: Finished difference Result 733686 states and 912622 transitions.
[2021-12-06 19:43:49,252 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:43:49,254 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3382.6666666666665) internal successors, (10148), 2 states have internal predecessors, (10148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10148
[2021-12-06 19:43:49,254 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:43:49,829 INFO  L225             Difference]: With dead ends: 733686
[2021-12-06 19:43:49,830 INFO  L226             Difference]: Without dead ends: 489124
[2021-12-06 19:43:49,909 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:43:49,909 INFO  L933         BasicCegarLoop]: 7237 mSDtfsCounter, 11831 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30502 mSolverCounterSat, 11086 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11831 SdHoareTripleChecker+Valid, 7286 SdHoareTripleChecker+Invalid, 41588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11086 IncrementalHoareTripleChecker+Valid, 30502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time
[2021-12-06 19:43:49,910 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [11831 Valid, 7286 Invalid, 41588 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11086 Valid, 30502 Invalid, 0 Unknown, 0 Unchecked, 24.0s Time]
[2021-12-06 19:43:50,192 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 489124 states.
[2021-12-06 19:43:53,698 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 489124 to 489124.
[2021-12-06 19:43:53,878 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 489124 states, 489123 states have (on average 1.1869468415919922) internal successors, (580563), 489123 states have internal predecessors, (580563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:43:54,642 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 489124 states to 489124 states and 580563 transitions.
[2021-12-06 19:43:54,642 INFO  L78                 Accepts]: Start accepts. Automaton has 489124 states and 580563 transitions. Word has length 10148
[2021-12-06 19:43:54,643 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:43:54,643 INFO  L470      AbstractCegarLoop]: Abstraction has 489124 states and 580563 transitions.
[2021-12-06 19:43:54,644 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3382.6666666666665) internal successors, (10148), 2 states have internal predecessors, (10148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:43:54,644 INFO  L276                IsEmpty]: Start isEmpty. Operand 489124 states and 580563 transitions.
[2021-12-06 19:43:55,713 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10239
[2021-12-06 19:43:55,713 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:43:55,716 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 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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, 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, 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, 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, 1, 1, 1, 1]
[2021-12-06 19:43:55,716 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-12-06 19:43:55,716 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:43:55,716 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:43:55,717 INFO  L85        PathProgramCache]: Analyzing trace with hash 2146438142, now seen corresponding path program 1 times
[2021-12-06 19:43:55,717 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:43:55,718 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299489351]
[2021-12-06 19:43:55,718 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:43:55,718 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:43:56,498 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:44:08,061 INFO  L134       CoverageAnalysis]: Checked inductivity of 139 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 19:44:08,061 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:44:08,061 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299489351]
[2021-12-06 19:44:08,061 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299489351] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:44:08,061 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:44:08,063 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:44:08,063 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909064213]
[2021-12-06 19:44:08,063 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:44:08,067 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:44:08,067 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:44:08,067 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:44:08,067 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:44:08,069 INFO  L87              Difference]: Start difference. First operand 489124 states and 580563 transitions. Second operand  has 3 states, 3 states have (on average 3412.6666666666665) internal successors, (10238), 2 states have internal predecessors, (10238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:44:34,731 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:44:34,731 INFO  L93              Difference]: Finished difference Result 1467366 states and 1741684 transitions.
[2021-12-06 19:44:34,732 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:44:34,733 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3412.6666666666665) internal successors, (10238), 2 states have internal predecessors, (10238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10238
[2021-12-06 19:44:34,734 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:44:35,774 INFO  L225             Difference]: With dead ends: 1467366
[2021-12-06 19:44:35,774 INFO  L226             Difference]: Without dead ends: 978244
[2021-12-06 19:44:35,922 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:44:35,923 INFO  L933         BasicCegarLoop]: 6466 mSDtfsCounter, 12329 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30671 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12329 SdHoareTripleChecker+Valid, 6515 SdHoareTripleChecker+Invalid, 41172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 30671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time
[2021-12-06 19:44:35,923 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12329 Valid, 6515 Invalid, 41172 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 30671 Invalid, 0 Unknown, 0 Unchecked, 23.0s Time]
[2021-12-06 19:44:36,495 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 978244 states.
[2021-12-06 19:44:43,773 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 978244 to 978244.
[2021-12-06 19:44:44,118 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 978244 states, 978243 states have (on average 1.1423634005047825) internal successors, (1117509), 978243 states have internal predecessors, (1117509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:44:45,959 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 978244 states to 978244 states and 1117509 transitions.
[2021-12-06 19:44:45,960 INFO  L78                 Accepts]: Start accepts. Automaton has 978244 states and 1117509 transitions. Word has length 10238
[2021-12-06 19:44:45,960 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:44:45,960 INFO  L470      AbstractCegarLoop]: Abstraction has 978244 states and 1117509 transitions.
[2021-12-06 19:44:45,962 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3412.6666666666665) internal successors, (10238), 2 states have internal predecessors, (10238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:44:45,962 INFO  L276                IsEmpty]: Start isEmpty. Operand 978244 states and 1117509 transitions.
[2021-12-06 19:44:47,821 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10435
[2021-12-06 19:44:47,821 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:44:47,823 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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[2021-12-06 19:44:47,823 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-12-06 19:44:47,824 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:44:47,824 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:44:47,825 INFO  L85        PathProgramCache]: Analyzing trace with hash -1720075899, now seen corresponding path program 1 times
[2021-12-06 19:44:47,826 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:44:47,826 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948982623]
[2021-12-06 19:44:47,827 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:44:47,827 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:44:48,858 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:45:00,761 INFO  L134       CoverageAnalysis]: Checked inductivity of 383 backedges. 333 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2021-12-06 19:45:00,762 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:45:00,762 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948982623]
[2021-12-06 19:45:00,762 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948982623] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:45:00,762 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:45:00,763 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-12-06 19:45:00,763 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47938962]
[2021-12-06 19:45:00,763 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:45:00,769 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-12-06 19:45:00,769 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:45:00,769 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-12-06 19:45:00,769 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2021-12-06 19:45:00,771 INFO  L87              Difference]: Start difference. First operand 978244 states and 1117509 transitions. Second operand  has 6 states, 6 states have (on average 1730.8333333333333) internal successors, (10385), 5 states have internal predecessors, (10385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:45:43,893 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:45:43,894 INFO  L93              Difference]: Finished difference Result 2960480 states and 3381292 transitions.
[2021-12-06 19:45:43,894 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-12-06 19:45:43,896 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1730.8333333333333) internal successors, (10385), 5 states have internal predecessors, (10385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10434
[2021-12-06 19:45:43,896 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:45:46,345 INFO  L225             Difference]: With dead ends: 2960480
[2021-12-06 19:45:46,345 INFO  L226             Difference]: Without dead ends: 1982238
[2021-12-06 19:45:46,888 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56
[2021-12-06 19:45:46,889 INFO  L933         BasicCegarLoop]: 9617 mSDtfsCounter, 30980 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 56814 mSolverCounterSat, 34797 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30980 SdHoareTripleChecker+Valid, 9811 SdHoareTripleChecker+Invalid, 91611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34797 IncrementalHoareTripleChecker+Valid, 56814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.7s IncrementalHoareTripleChecker+Time
[2021-12-06 19:45:46,889 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [30980 Valid, 9811 Invalid, 91611 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34797 Valid, 56814 Invalid, 0 Unknown, 0 Unchecked, 35.7s Time]
[2021-12-06 19:45:48,266 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1982238 states.
[2021-12-06 19:46:03,901 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982238 to 1956484.
[2021-12-06 19:46:05,374 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1956484 states, 1956483 states have (on average 1.0882174800394382) internal successors, (2129079), 1956483 states have internal predecessors, (2129079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:46:09,027 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1956484 states to 1956484 states and 2129079 transitions.
[2021-12-06 19:46:09,027 INFO  L78                 Accepts]: Start accepts. Automaton has 1956484 states and 2129079 transitions. Word has length 10434
[2021-12-06 19:46:09,028 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:46:09,028 INFO  L470      AbstractCegarLoop]: Abstraction has 1956484 states and 2129079 transitions.
[2021-12-06 19:46:09,030 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1730.8333333333333) internal successors, (10385), 5 states have internal predecessors, (10385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:46:09,030 INFO  L276                IsEmpty]: Start isEmpty. Operand 1956484 states and 2129079 transitions.