./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label17.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_c9a2a8a7-af55-46f6-a53e-969018818a2f/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a2a8a7-af55-46f6-a53e-969018818a2f/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_c9a2a8a7-af55-46f6-a53e-969018818a2f/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a2a8a7-af55-46f6-a53e-969018818a2f/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label17.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a2a8a7-af55-46f6-a53e-969018818a2f/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_c9a2a8a7-af55-46f6-a53e-969018818a2f/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 076813dc3dd2e9fdee9ded082601b1bae34511757f8a23a89b3ede7737a4fca9
--- Real Ultimate output ---
This is Ultimate 0.2.2-hotfix-svcomp22-839c364
[2021-12-06 19:40:28,567 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-12-06 19:40:28,569 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-06 19:40:28,591 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-06 19:40:28,592 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-06 19:40:28,593 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-06 19:40:28,594 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-06 19:40:28,596 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-06 19:40:28,597 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-06 19:40:28,598 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-06 19:40:28,599 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-12-06 19:40:28,600 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-06 19:40:28,600 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-06 19:40:28,601 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-06 19:40:28,602 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-06 19:40:28,603 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-06 19:40:28,604 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-06 19:40:28,605 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-06 19:40:28,606 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-06 19:40:28,608 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-06 19:40:28,610 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-06 19:40:28,611 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-06 19:40:28,612 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-12-06 19:40:28,613 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-06 19:40:28,615 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-06 19:40:28,616 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-06 19:40:28,616 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-06 19:40:28,617 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-06 19:40:28,617 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-06 19:40:28,618 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-06 19:40:28,618 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-06 19:40:28,619 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-06 19:40:28,619 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-06 19:40:28,620 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-06 19:40:28,621 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-06 19:40:28,621 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-06 19:40:28,621 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-06 19:40:28,621 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-06 19:40:28,622 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-06 19:40:28,622 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-06 19:40:28,623 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-12-06 19:40:28,623 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a2a8a7-af55-46f6-a53e-969018818a2f/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-06 19:40:28,640 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-12-06 19:40:28,641 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-06 19:40:28,641 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-06 19:40:28,641 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-06 19:40:28,641 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-06 19:40:28,642 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-06 19:40:28,642 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-06 19:40:28,642 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-12-06 19:40:28,642 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-12-06 19:40:28,642 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-06 19:40:28,642 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-12-06 19:40:28,643 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-12-06 19:40:28,643 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-12-06 19:40:28,643 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-12-06 19:40:28,643 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-12-06 19:40:28,643 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-06 19:40:28,643 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-12-06 19:40:28,643 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-12-06 19:40:28,643 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-12-06 19:40:28,643 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-12-06 19:40:28,643 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-12-06 19:40:28,644 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-06 19:40:28,644 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-12-06 19:40:28,644 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-12-06 19:40:28,644 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 19:40:28,644 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-06 19:40:28,644 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-12-06 19:40:28,644 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-06 19:40:28,644 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-12-06 19:40:28,645 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-06 19:40:28,645 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-12-06 19:40:28,645 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-06 19:40:28,645 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-06 19:40:28,645 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-12-06 19:40:28,645 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_c9a2a8a7-af55-46f6-a53e-969018818a2f/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_c9a2a8a7-af55-46f6-a53e-969018818a2f/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 -> 076813dc3dd2e9fdee9ded082601b1bae34511757f8a23a89b3ede7737a4fca9
[2021-12-06 19:40:28,822 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-06 19:40:28,839 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-06 19:40:28,841 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-06 19:40:28,842 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-12-06 19:40:28,842 INFO  L275        PluginConnector]: CDTParser initialized
[2021-12-06 19:40:28,843 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a2a8a7-af55-46f6-a53e-969018818a2f/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-rers2012/Problem07_label17.c
[2021-12-06 19:40:28,886 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a2a8a7-af55-46f6-a53e-969018818a2f/bin/uautomizer-DrprNOufMa/data/0d26af790/2b3ad09463234afd85b41577d628876c/FLAGe78836c85
[2021-12-06 19:40:30,254 INFO  L306              CDTParser]: Found 1 translation units.
[2021-12-06 19:40:30,255 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a2a8a7-af55-46f6-a53e-969018818a2f/sv-benchmarks/c/eca-rers2012/Problem07_label17.c
[2021-12-06 19:40:30,433 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a2a8a7-af55-46f6-a53e-969018818a2f/bin/uautomizer-DrprNOufMa/data/0d26af790/2b3ad09463234afd85b41577d628876c/FLAGe78836c85
[2021-12-06 19:40:30,919 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a2a8a7-af55-46f6-a53e-969018818a2f/bin/uautomizer-DrprNOufMa/data/0d26af790/2b3ad09463234afd85b41577d628876c
[2021-12-06 19:40:30,921 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-06 19:40:30,922 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-06 19:40:30,923 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-06 19:40:30,923 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-06 19:40:30,926 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-06 19:40:30,927 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:40:30" (1/1) ...
[2021-12-06 19:40:30,928 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30e16bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:30, skipping insertion in model container
[2021-12-06 19:40:30,928 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:40:30" (1/1) ...
[2021-12-06 19:40:30,933 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-12-06 19:40:31,571 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-12-06 19:40:41,608 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_c9a2a8a7-af55-46f6-a53e-969018818a2f/sv-benchmarks/c/eca-rers2012/Problem07_label17.c[2771884,2771897]
[2021-12-06 19:40:41,677 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 19:40:41,684 INFO  L203         MainTranslator]: Completed pre-run
[2021-12-06 19:40:47,639 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_c9a2a8a7-af55-46f6-a53e-969018818a2f/sv-benchmarks/c/eca-rers2012/Problem07_label17.c[2771884,2771897]
[2021-12-06 19:40:47,645 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 19:40:48,337 INFO  L208         MainTranslator]: Completed translation
[2021-12-06 19:40:48,337 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:48 WrapperNode
[2021-12-06 19:40:48,337 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-06 19:40:48,338 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-06 19:40:48,338 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-06 19:40:48,338 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-06 19:40:48,343 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:48" (1/1) ...
[2021-12-06 19:40:48,649 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:48" (1/1) ...
[2021-12-06 19:40:49,875 INFO  L137                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2021-12-06 19:40:49,875 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-06 19:40:49,876 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-06 19:40:49,876 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-06 19:40:49,876 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-12-06 19:40:49,883 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:48" (1/1) ...
[2021-12-06 19:40:49,884 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:48" (1/1) ...
[2021-12-06 19:40:50,151 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:48" (1/1) ...
[2021-12-06 19:40:50,151 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:48" (1/1) ...
[2021-12-06 19:40:50,616 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:48" (1/1) ...
[2021-12-06 19:40:50,827 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:48" (1/1) ...
[2021-12-06 19:40:50,945 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:48" (1/1) ...
[2021-12-06 19:40:51,249 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-06 19:40:51,250 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-06 19:40:51,250 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-12-06 19:40:51,251 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-12-06 19:40:51,251 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:48" (1/1) ...
[2021-12-06 19:40:51,258 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 19:40:51,267 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a2a8a7-af55-46f6-a53e-969018818a2f/bin/uautomizer-DrprNOufMa/z3
[2021-12-06 19:40:51,277 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a2a8a7-af55-46f6-a53e-969018818a2f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-12-06 19:40:51,279 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a2a8a7-af55-46f6-a53e-969018818a2f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-12-06 19:40:51,307 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-06 19:40:51,307 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-06 19:40:51,307 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-06 19:40:51,307 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-06 19:40:51,402 INFO  L236             CfgBuilder]: Building ICFG
[2021-12-06 19:40:51,403 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-06 19:41:15,121 INFO  L277             CfgBuilder]: Performing block encoding
[2021-12-06 19:41:15,163 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-06 19:41:15,163 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-06 19:41:15,172 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:41:15 BoogieIcfgContainer
[2021-12-06 19:41:15,172 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-06 19:41:15,174 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-06 19:41:15,174 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-12-06 19:41:15,176 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-12-06 19:41:15,177 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:40:30" (1/3) ...
[2021-12-06 19:41:15,177 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@619c1b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:41:15, skipping insertion in model container
[2021-12-06 19:41:15,177 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:40:48" (2/3) ...
[2021-12-06 19:41:15,178 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@619c1b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:41:15, skipping insertion in model container
[2021-12-06 19:41:15,178 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:41:15" (3/3) ...
[2021-12-06 19:41:15,179 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem07_label17.c
[2021-12-06 19:41:15,184 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-06 19:41:15,185 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-06 19:41:15,245 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-06 19:41:15,250 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 19:41:15,250 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-06 19:41:15,362 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 19:41:16,073 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10117
[2021-12-06 19:41:16,073 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:41:16,079 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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[2021-12-06 19:41:16,081 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:41:16,100 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:41:16,105 INFO  L85        PathProgramCache]: Analyzing trace with hash 1450475218, now seen corresponding path program 1 times
[2021-12-06 19:41:16,111 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:41:16,111 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099685752]
[2021-12-06 19:41:16,114 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:41:16,115 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:41:17,843 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:41:37,872 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 19:41:37,872 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:41:37,873 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099685752]
[2021-12-06 19:41:37,873 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099685752] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:41:37,873 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:41:37,875 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:41:37,876 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452447205]
[2021-12-06 19:41:37,876 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:41:37,890 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:41:37,891 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:41:37,910 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:41:37,911 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:41:37,935 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 3372.0) internal successors, (10116), 2 states have internal predecessors, (10116), 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 19:42:02,571 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:42:02,571 INFO  L93              Difference]: Finished difference Result 30705 states and 61134 transitions.
[2021-12-06 19:42:02,572 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:42:02,575 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3372.0) internal successors, (10116), 2 states have internal predecessors, (10116), 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 10116
[2021-12-06 19:42:02,593 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:42:02,696 INFO  L225             Difference]: With dead ends: 30705
[2021-12-06 19:42:02,696 INFO  L226             Difference]: Without dead ends: 20384
[2021-12-06 19:42:02,712 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 19:42:02,714 INFO  L933         BasicCegarLoop]: 4082 mSDtfsCounter, 472 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 31005 mSolverCounterSat, 12527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 4135 SdHoareTripleChecker+Invalid, 43532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12527 IncrementalHoareTripleChecker+Valid, 31005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time
[2021-12-06 19:42:02,715 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 4135 Invalid, 43532 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12527 Valid, 31005 Invalid, 0 Unknown, 0 Unchecked, 24.1s Time]
[2021-12-06 19:42:02,756 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20384 states.
[2021-12-06 19:42:03,121 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20384 to 20384.
[2021-12-06 19:42:03,153 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20384 states, 20383 states have (on average 1.7945346612373057) internal successors, (36578), 20383 states have internal predecessors, (36578), 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 19:42:03,213 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20384 states to 20384 states and 36578 transitions.
[2021-12-06 19:42:03,214 INFO  L78                 Accepts]: Start accepts. Automaton has 20384 states and 36578 transitions. Word has length 10116
[2021-12-06 19:42:03,228 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:42:03,228 INFO  L470      AbstractCegarLoop]: Abstraction has 20384 states and 36578 transitions.
[2021-12-06 19:42:03,230 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3372.0) internal successors, (10116), 2 states have internal predecessors, (10116), 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 19:42:03,230 INFO  L276                IsEmpty]: Start isEmpty. Operand 20384 states and 36578 transitions.
[2021-12-06 19:42:03,865 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10121
[2021-12-06 19:42:03,865 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:42:03,870 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 19:42:03,870 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-06 19:42:03,870 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:42:03,871 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:42:03,877 INFO  L85        PathProgramCache]: Analyzing trace with hash -938147590, now seen corresponding path program 1 times
[2021-12-06 19:42:03,877 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:42:03,877 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050559521]
[2021-12-06 19:42:03,878 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:42:03,878 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:42:04,748 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:42:15,819 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 19:42:15,819 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:42:15,820 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050559521]
[2021-12-06 19:42:15,820 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050559521] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:42:15,820 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:42:15,821 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:42:15,822 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623166460]
[2021-12-06 19:42:15,822 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:42:15,835 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:42:15,835 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:42:15,836 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:42:15,836 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:42:15,839 INFO  L87              Difference]: Start difference. First operand 20384 states and 36578 transitions. Second operand  has 3 states, 3 states have (on average 3373.3333333333335) internal successors, (10120), 2 states have internal predecessors, (10120), 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 19:42:39,268 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:42:39,268 INFO  L93              Difference]: Finished difference Result 61146 states and 109729 transitions.
[2021-12-06 19:42:39,269 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:42:39,271 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3373.3333333333335) internal successors, (10120), 2 states have internal predecessors, (10120), 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 10120
[2021-12-06 19:42:39,272 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:42:39,335 INFO  L225             Difference]: With dead ends: 61146
[2021-12-06 19:42:39,335 INFO  L226             Difference]: Without dead ends: 40764
[2021-12-06 19:42:39,349 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 19:42:39,350 INFO  L933         BasicCegarLoop]: 4828 mSDtfsCounter, 13865 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28700 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13865 SdHoareTripleChecker+Valid, 4877 SdHoareTripleChecker+Invalid, 40458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time
[2021-12-06 19:42:39,351 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13865 Valid, 4877 Invalid, 40458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28700 Invalid, 0 Unknown, 0 Unchecked, 23.0s Time]
[2021-12-06 19:42:39,384 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40764 states.
[2021-12-06 19:42:39,911 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 40764.
[2021-12-06 19:42:39,934 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40764 states, 40763 states have (on average 1.6070701371341658) internal successors, (65509), 40763 states have internal predecessors, (65509), 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 19:42:39,982 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40764 states to 40764 states and 65509 transitions.
[2021-12-06 19:42:39,982 INFO  L78                 Accepts]: Start accepts. Automaton has 40764 states and 65509 transitions. Word has length 10120
[2021-12-06 19:42:39,984 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:42:39,984 INFO  L470      AbstractCegarLoop]: Abstraction has 40764 states and 65509 transitions.
[2021-12-06 19:42:39,985 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3373.3333333333335) internal successors, (10120), 2 states have internal predecessors, (10120), 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 19:42:39,986 INFO  L276                IsEmpty]: Start isEmpty. Operand 40764 states and 65509 transitions.
[2021-12-06 19:42:40,592 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10123
[2021-12-06 19:42:40,592 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:42:40,597 INFO  L514         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 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[2021-12-06 19:42:40,598 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-06 19:42:40,598 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:42:40,598 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:42:40,601 INFO  L85        PathProgramCache]: Analyzing trace with hash 2007362261, now seen corresponding path program 1 times
[2021-12-06 19:42:40,601 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:42:40,601 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104895867]
[2021-12-06 19:42:40,603 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:42:40,603 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:42:41,479 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:42:51,497 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 19:42:51,498 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:42:51,498 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104895867]
[2021-12-06 19:42:51,498 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104895867] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:42:51,498 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:42:51,500 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:42:51,500 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730789979]
[2021-12-06 19:42:51,500 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:42:51,508 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:42:51,508 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:42:51,509 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:42:51,509 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:42:51,511 INFO  L87              Difference]: Start difference. First operand 40764 states and 65509 transitions. Second operand  has 3 states, 3 states have (on average 3374.0) internal successors, (10122), 2 states have internal predecessors, (10122), 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 19:43:14,821 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:43:14,821 INFO  L93              Difference]: Finished difference Result 122286 states and 196522 transitions.
[2021-12-06 19:43:14,822 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:43:14,823 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3374.0) internal successors, (10122), 2 states have internal predecessors, (10122), 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 10122
[2021-12-06 19:43:14,823 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:43:14,894 INFO  L225             Difference]: With dead ends: 122286
[2021-12-06 19:43:14,894 INFO  L226             Difference]: Without dead ends: 81524
[2021-12-06 19:43:14,923 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 19:43:14,924 INFO  L933         BasicCegarLoop]: 4820 mSDtfsCounter, 13685 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28825 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13685 SdHoareTripleChecker+Valid, 4869 SdHoareTripleChecker+Invalid, 40502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 28825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time
[2021-12-06 19:43:14,924 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13685 Valid, 4869 Invalid, 40502 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 28825 Invalid, 0 Unknown, 0 Unchecked, 22.7s Time]
[2021-12-06 19:43:14,970 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81524 states.
[2021-12-06 19:43:15,517 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81524 to 81524.
[2021-12-06 19:43:15,573 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81524 states, 81523 states have (on average 1.4645314819130797) internal successors, (119393), 81523 states have internal predecessors, (119393), 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 19:43:15,671 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81524 states to 81524 states and 119393 transitions.
[2021-12-06 19:43:15,671 INFO  L78                 Accepts]: Start accepts. Automaton has 81524 states and 119393 transitions. Word has length 10122
[2021-12-06 19:43:15,673 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:43:15,673 INFO  L470      AbstractCegarLoop]: Abstraction has 81524 states and 119393 transitions.
[2021-12-06 19:43:15,674 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3374.0) internal successors, (10122), 2 states have internal predecessors, (10122), 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 19:43:15,674 INFO  L276                IsEmpty]: Start isEmpty. Operand 81524 states and 119393 transitions.
[2021-12-06 19:43:16,431 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10134
[2021-12-06 19:43:16,431 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:43:16,436 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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[2021-12-06 19:43:16,436 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-12-06 19:43:16,437 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:43:16,437 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:43:16,440 INFO  L85        PathProgramCache]: Analyzing trace with hash -451278450, now seen corresponding path program 1 times
[2021-12-06 19:43:16,440 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:43:16,440 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440044004]
[2021-12-06 19:43:16,441 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:43:16,441 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:43:17,203 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:43:25,803 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-12-06 19:43:25,803 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:43:25,803 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440044004]
[2021-12-06 19:43:25,803 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440044004] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:43:25,803 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:43:25,805 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:43:25,805 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381528795]
[2021-12-06 19:43:25,805 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:43:25,812 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:43:25,813 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:43:25,813 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:43:25,813 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:43:25,815 INFO  L87              Difference]: Start difference. First operand 81524 states and 119393 transitions. Second operand  has 3 states, 3 states have (on average 3376.0) internal successors, (10128), 2 states have internal predecessors, (10128), 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 19:43:49,899 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:43:49,899 INFO  L93              Difference]: Finished difference Result 244566 states and 358174 transitions.
[2021-12-06 19:43:49,899 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:43:49,901 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3376.0) internal successors, (10128), 2 states have internal predecessors, (10128), 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 10133
[2021-12-06 19:43:49,901 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:43:50,077 INFO  L225             Difference]: With dead ends: 244566
[2021-12-06 19:43:50,077 INFO  L226             Difference]: Without dead ends: 163044
[2021-12-06 19:43:50,103 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 19:43:50,104 INFO  L933         BasicCegarLoop]: 6091 mSDtfsCounter, 13473 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27528 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13473 SdHoareTripleChecker+Valid, 6140 SdHoareTripleChecker+Invalid, 40558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time
[2021-12-06 19:43:50,105 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13473 Valid, 6140 Invalid, 40558 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27528 Invalid, 0 Unknown, 0 Unchecked, 23.3s Time]
[2021-12-06 19:43:50,191 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 163044 states.
[2021-12-06 19:43:51,371 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 163044 to 163044.
[2021-12-06 19:43:51,453 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163044 states, 163043 states have (on average 1.3309924375778168) internal successors, (217009), 163043 states have internal predecessors, (217009), 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 19:43:51,656 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163044 states to 163044 states and 217009 transitions.
[2021-12-06 19:43:51,656 INFO  L78                 Accepts]: Start accepts. Automaton has 163044 states and 217009 transitions. Word has length 10133
[2021-12-06 19:43:51,658 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:43:51,658 INFO  L470      AbstractCegarLoop]: Abstraction has 163044 states and 217009 transitions.
[2021-12-06 19:43:51,659 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3376.0) internal successors, (10128), 2 states have internal predecessors, (10128), 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 19:43:51,659 INFO  L276                IsEmpty]: Start isEmpty. Operand 163044 states and 217009 transitions.
[2021-12-06 19:43:52,526 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10165
[2021-12-06 19:43:52,526 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:43:52,531 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 19:43:52,531 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-12-06 19:43:52,531 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:43:52,532 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:43:52,534 INFO  L85        PathProgramCache]: Analyzing trace with hash -517698100, now seen corresponding path program 1 times
[2021-12-06 19:43:52,534 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:43:52,534 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327621072]
[2021-12-06 19:43:52,535 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:43:52,535 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:43:53,314 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:44:02,166 INFO  L134       CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 19:44:02,167 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:44:02,167 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327621072]
[2021-12-06 19:44:02,167 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327621072] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:44:02,167 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:44:02,169 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:44:02,169 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642814334]
[2021-12-06 19:44:02,169 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:44:02,175 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:44:02,176 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:44:02,176 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:44:02,176 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:44:02,178 INFO  L87              Difference]: Start difference. First operand 163044 states and 217009 transitions. Second operand  has 3 states, 3 states have (on average 3388.0) internal successors, (10164), 2 states have internal predecessors, (10164), 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 19:44:27,224 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:44:27,224 INFO  L93              Difference]: Finished difference Result 489126 states and 651022 transitions.
[2021-12-06 19:44:27,224 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:44:27,225 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3388.0) internal successors, (10164), 2 states have internal predecessors, (10164), 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 10164
[2021-12-06 19:44:27,226 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:44:27,573 INFO  L225             Difference]: With dead ends: 489126
[2021-12-06 19:44:27,573 INFO  L226             Difference]: Without dead ends: 326084
[2021-12-06 19:44:27,644 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 19:44:27,645 INFO  L933         BasicCegarLoop]: 7312 mSDtfsCounter, 11769 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30511 mSolverCounterSat, 11081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11769 SdHoareTripleChecker+Valid, 7361 SdHoareTripleChecker+Invalid, 41592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11081 IncrementalHoareTripleChecker+Valid, 30511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time
[2021-12-06 19:44:27,646 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [11769 Valid, 7361 Invalid, 41592 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11081 Valid, 30511 Invalid, 0 Unknown, 0 Unchecked, 23.7s Time]
[2021-12-06 19:44:27,846 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 326084 states.
[2021-12-06 19:44:30,069 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 326084 to 326084.
[2021-12-06 19:44:30,271 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 326084 states, 326083 states have (on average 1.253935347748886) internal successors, (408887), 326083 states have internal predecessors, (408887), 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 19:44:30,662 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 326084 states to 326084 states and 408887 transitions.
[2021-12-06 19:44:30,662 INFO  L78                 Accepts]: Start accepts. Automaton has 326084 states and 408887 transitions. Word has length 10164
[2021-12-06 19:44:30,664 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:44:30,664 INFO  L470      AbstractCegarLoop]: Abstraction has 326084 states and 408887 transitions.
[2021-12-06 19:44:30,665 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3388.0) internal successors, (10164), 2 states have internal predecessors, (10164), 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 19:44:30,665 INFO  L276                IsEmpty]: Start isEmpty. Operand 326084 states and 408887 transitions.
[2021-12-06 19:44:31,938 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10221
[2021-12-06 19:44:31,938 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:44:31,942 INFO  L514         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:44:31,942 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-12-06 19:44:31,942 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:44:31,943 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:44:31,946 INFO  L85        PathProgramCache]: Analyzing trace with hash -635641806, now seen corresponding path program 1 times
[2021-12-06 19:44:31,946 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:44:31,946 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805747968]
[2021-12-06 19:44:31,947 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:44:31,947 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:44:32,760 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:44:41,593 INFO  L134       CoverageAnalysis]: Checked inductivity of 106 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-12-06 19:44:41,594 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:44:41,594 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805747968]
[2021-12-06 19:44:41,594 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805747968] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:44:41,594 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:44:41,595 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:44:41,596 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641584829]
[2021-12-06 19:44:41,596 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:44:41,604 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:44:41,604 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:44:41,604 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:44:41,605 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:44:41,607 INFO  L87              Difference]: Start difference. First operand 326084 states and 408887 transitions. Second operand  has 3 states, 3 states have (on average 3405.6666666666665) internal successors, (10217), 2 states have internal predecessors, (10217), 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 19:45:06,934 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:45:06,934 INFO  L93              Difference]: Finished difference Result 978246 states and 1226656 transitions.
[2021-12-06 19:45:06,935 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:45:06,936 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3405.6666666666665) internal successors, (10217), 2 states have internal predecessors, (10217), 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 10220
[2021-12-06 19:45:06,936 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:45:07,682 INFO  L225             Difference]: With dead ends: 978246
[2021-12-06 19:45:07,682 INFO  L226             Difference]: Without dead ends: 652164
[2021-12-06 19:45:07,791 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 19:45:07,792 INFO  L933         BasicCegarLoop]: 5914 mSDtfsCounter, 12559 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29825 mSolverCounterSat, 11034 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12559 SdHoareTripleChecker+Valid, 5963 SdHoareTripleChecker+Invalid, 40859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11034 IncrementalHoareTripleChecker+Valid, 29825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time
[2021-12-06 19:45:07,793 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12559 Valid, 5963 Invalid, 40859 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11034 Valid, 29825 Invalid, 0 Unknown, 0 Unchecked, 23.0s Time]
[2021-12-06 19:45:08,134 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 652164 states.
[2021-12-06 19:45:13,078 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 652164 to 652164.
[2021-12-06 19:45:13,339 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 652164 states, 652163 states have (on average 1.1903450517738663) internal successors, (776299), 652163 states have internal predecessors, (776299), 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 19:45:14,552 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 652164 states to 652164 states and 776299 transitions.
[2021-12-06 19:45:14,552 INFO  L78                 Accepts]: Start accepts. Automaton has 652164 states and 776299 transitions. Word has length 10220
[2021-12-06 19:45:14,553 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:45:14,553 INFO  L470      AbstractCegarLoop]: Abstraction has 652164 states and 776299 transitions.
[2021-12-06 19:45:14,555 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3405.6666666666665) internal successors, (10217), 2 states have internal predecessors, (10217), 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 19:45:14,555 INFO  L276                IsEmpty]: Start isEmpty. Operand 652164 states and 776299 transitions.
[2021-12-06 19:45:15,984 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10352
[2021-12-06 19:45:15,984 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:45:15,987 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 19:45:15,987 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-12-06 19:45:15,987 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:45:15,987 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:45:15,989 INFO  L85        PathProgramCache]: Analyzing trace with hash 955295675, now seen corresponding path program 1 times
[2021-12-06 19:45:15,989 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:45:15,989 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334347208]
[2021-12-06 19:45:15,990 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:45:15,990 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:45:16,925 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:45:25,953 INFO  L134       CoverageAnalysis]: Checked inductivity of 233 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 19:45:25,953 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:45:25,953 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334347208]
[2021-12-06 19:45:25,953 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334347208] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:45:25,954 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:45:25,955 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:45:25,955 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392199909]
[2021-12-06 19:45:25,955 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:45:25,961 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:45:25,962 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:45:25,962 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:45:25,962 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:45:25,964 INFO  L87              Difference]: Start difference. First operand 652164 states and 776299 transitions. Second operand  has 3 states, 3 states have (on average 3450.3333333333335) internal successors, (10351), 2 states have internal predecessors, (10351), 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 19:45:49,238 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:45:49,238 INFO  L93              Difference]: Finished difference Result 1304326 states and 1552596 transitions.
[2021-12-06 19:45:49,238 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:45:49,240 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3450.3333333333335) internal successors, (10351), 2 states have internal predecessors, (10351), 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 10351
[2021-12-06 19:45:49,240 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:45:50,044 INFO  L225             Difference]: With dead ends: 1304326
[2021-12-06 19:45:50,044 INFO  L226             Difference]: Without dead ends: 652164
[2021-12-06 19:45:50,237 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 19:45:50,238 INFO  L933         BasicCegarLoop]: 9997 mSDtfsCounter, 10037 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29586 mSolverCounterSat, 4825 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10037 SdHoareTripleChecker+Valid, 10046 SdHoareTripleChecker+Invalid, 34411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4825 IncrementalHoareTripleChecker+Valid, 29586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time
[2021-12-06 19:45:50,239 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10037 Valid, 10046 Invalid, 34411 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4825 Valid, 29586 Invalid, 0 Unknown, 0 Unchecked, 20.6s Time]
[2021-12-06 19:45:50,655 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 652164 states.
[2021-12-06 19:45:55,738 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 652164 to 652164.
[2021-12-06 19:45:55,981 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 652164 states, 652163 states have (on average 1.1896090394579268) internal successors, (775819), 652163 states have internal predecessors, (775819), 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 19:45:56,979 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 652164 states to 652164 states and 775819 transitions.
[2021-12-06 19:45:56,979 INFO  L78                 Accepts]: Start accepts. Automaton has 652164 states and 775819 transitions. Word has length 10351
[2021-12-06 19:45:56,980 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:45:56,980 INFO  L470      AbstractCegarLoop]: Abstraction has 652164 states and 775819 transitions.
[2021-12-06 19:45:56,981 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3450.3333333333335) internal successors, (10351), 2 states have internal predecessors, (10351), 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 19:45:56,981 INFO  L276                IsEmpty]: Start isEmpty. Operand 652164 states and 775819 transitions.
[2021-12-06 19:45:58,317 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10542
[2021-12-06 19:45:58,318 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:45:58,320 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 19:45:58,320 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-12-06 19:45:58,321 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:45:58,321 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:45:58,322 INFO  L85        PathProgramCache]: Analyzing trace with hash -1720958954, now seen corresponding path program 1 times
[2021-12-06 19:45:58,322 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:45:58,322 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275788237]
[2021-12-06 19:45:58,323 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:45:58,323 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:45:59,171 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:46:08,624 INFO  L134       CoverageAnalysis]: Checked inductivity of 423 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 19:46:08,624 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:46:08,624 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275788237]
[2021-12-06 19:46:08,624 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275788237] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:46:08,624 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:46:08,626 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:46:08,626 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783552173]
[2021-12-06 19:46:08,626 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:46:08,630 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:46:08,630 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:46:08,630 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:46:08,630 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:46:08,632 INFO  L87              Difference]: Start difference. First operand 652164 states and 775819 transitions. Second operand  has 3 states, 3 states have (on average 3513.6666666666665) internal successors, (10541), 2 states have internal predecessors, (10541), 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 19:46:34,827 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:46:34,827 INFO  L93              Difference]: Finished difference Result 1630406 states and 1920908 transitions.
[2021-12-06 19:46:34,828 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:46:34,829 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3513.6666666666665) internal successors, (10541), 2 states have internal predecessors, (10541), 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 10541
[2021-12-06 19:46:34,830 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:46:35,961 INFO  L225             Difference]: With dead ends: 1630406
[2021-12-06 19:46:35,962 INFO  L226             Difference]: Without dead ends: 978244
[2021-12-06 19:46:36,173 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 19:46:36,174 INFO  L933         BasicCegarLoop]: 10010 mSDtfsCounter, 9820 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30736 mSolverCounterSat, 6484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9820 SdHoareTripleChecker+Valid, 10059 SdHoareTripleChecker+Invalid, 37220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6484 IncrementalHoareTripleChecker+Valid, 30736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time
[2021-12-06 19:46:36,174 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [9820 Valid, 10059 Invalid, 37220 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6484 Valid, 30736 Invalid, 0 Unknown, 0 Unchecked, 22.2s Time]
[2021-12-06 19:46:37,041 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 978244 states.
[2021-12-06 19:46:44,620 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 978244 to 978244.
[2021-12-06 19:46:45,031 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 978244 states, 978243 states have (on average 1.148870986043345) internal successors, (1123875), 978243 states have internal predecessors, (1123875), 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 19:46:46,705 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 978244 states to 978244 states and 1123875 transitions.
[2021-12-06 19:46:46,705 INFO  L78                 Accepts]: Start accepts. Automaton has 978244 states and 1123875 transitions. Word has length 10541
[2021-12-06 19:46:46,706 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:46:46,706 INFO  L470      AbstractCegarLoop]: Abstraction has 978244 states and 1123875 transitions.
[2021-12-06 19:46:46,708 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3513.6666666666665) internal successors, (10541), 2 states have internal predecessors, (10541), 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 19:46:46,708 INFO  L276                IsEmpty]: Start isEmpty. Operand 978244 states and 1123875 transitions.
[2021-12-06 19:46:48,594 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10665
[2021-12-06 19:46:48,594 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:46:48,596 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-06 19:46:48,596 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2021-12-06 19:46:48,596 INFO  L402      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:46:48,596 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:46:48,597 INFO  L85        PathProgramCache]: Analyzing trace with hash 1466936895, now seen corresponding path program 1 times
[2021-12-06 19:46:48,598 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:46:48,598 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204171960]
[2021-12-06 19:46:48,598 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:46:48,598 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:46:49,480 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat