./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label38.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_bd14ab4a-225f-4006-89a8-126a4fe16bad/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd14ab4a-225f-4006-89a8-126a4fe16bad/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_bd14ab4a-225f-4006-89a8-126a4fe16bad/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd14ab4a-225f-4006-89a8-126a4fe16bad/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label38.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd14ab4a-225f-4006-89a8-126a4fe16bad/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_bd14ab4a-225f-4006-89a8-126a4fe16bad/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 df7ae3db93e92270618cc08b15772305b39e7a8184e8ea2221160c76e4a6368e
--- Real Ultimate output ---
This is Ultimate 0.2.2-hotfix-svcomp22-839c364
[2021-12-06 22:19:41,454 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-12-06 22:19:41,456 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-06 22:19:41,490 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-06 22:19:41,491 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-06 22:19:41,492 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-06 22:19:41,494 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-06 22:19:41,496 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-06 22:19:41,498 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-06 22:19:41,499 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-06 22:19:41,500 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-12-06 22:19:41,501 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-06 22:19:41,502 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-06 22:19:41,503 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-06 22:19:41,504 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-06 22:19:41,505 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-06 22:19:41,506 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-06 22:19:41,507 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-06 22:19:41,509 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-06 22:19:41,512 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-06 22:19:41,513 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-06 22:19:41,515 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-06 22:19:41,516 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-12-06 22:19:41,517 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-06 22:19:41,520 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-06 22:19:41,521 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-06 22:19:41,521 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-06 22:19:41,522 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-06 22:19:41,523 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-06 22:19:41,524 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-06 22:19:41,524 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-06 22:19:41,525 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-06 22:19:41,526 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-06 22:19:41,527 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-06 22:19:41,528 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-06 22:19:41,528 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-06 22:19:41,528 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-06 22:19:41,529 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-06 22:19:41,529 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-06 22:19:41,530 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-06 22:19:41,530 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-12-06 22:19:41,531 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd14ab4a-225f-4006-89a8-126a4fe16bad/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-06 22:19:41,554 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-12-06 22:19:41,554 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-06 22:19:41,554 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-06 22:19:41,554 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-06 22:19:41,555 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-06 22:19:41,555 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-06 22:19:41,556 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-06 22:19:41,556 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-12-06 22:19:41,556 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-12-06 22:19:41,556 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-06 22:19:41,557 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-12-06 22:19:41,557 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-12-06 22:19:41,557 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-12-06 22:19:41,557 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-12-06 22:19:41,557 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-12-06 22:19:41,557 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-06 22:19:41,558 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-12-06 22:19:41,558 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-12-06 22:19:41,558 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-12-06 22:19:41,558 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-12-06 22:19:41,558 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-12-06 22:19:41,559 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-06 22:19:41,559 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-12-06 22:19:41,559 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-12-06 22:19:41,559 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 22:19:41,559 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-06 22:19:41,560 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-12-06 22:19:41,560 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-06 22:19:41,560 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-12-06 22:19:41,560 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-06 22:19:41,560 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-12-06 22:19:41,560 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-06 22:19:41,561 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-06 22:19:41,561 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-12-06 22:19:41,561 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_bd14ab4a-225f-4006-89a8-126a4fe16bad/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_bd14ab4a-225f-4006-89a8-126a4fe16bad/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 -> df7ae3db93e92270618cc08b15772305b39e7a8184e8ea2221160c76e4a6368e
[2021-12-06 22:19:41,757 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-06 22:19:41,777 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-06 22:19:41,778 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-06 22:19:41,779 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-12-06 22:19:41,780 INFO  L275        PluginConnector]: CDTParser initialized
[2021-12-06 22:19:41,781 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd14ab4a-225f-4006-89a8-126a4fe16bad/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-rers2012/Problem07_label38.c
[2021-12-06 22:19:41,823 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd14ab4a-225f-4006-89a8-126a4fe16bad/bin/uautomizer-DrprNOufMa/data/273bc53bd/65ab197604b54f678ee0970c8c3cd5d6/FLAG6509fc6d2
[2021-12-06 22:19:43,227 INFO  L306              CDTParser]: Found 1 translation units.
[2021-12-06 22:19:43,227 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd14ab4a-225f-4006-89a8-126a4fe16bad/sv-benchmarks/c/eca-rers2012/Problem07_label38.c
[2021-12-06 22:19:43,364 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd14ab4a-225f-4006-89a8-126a4fe16bad/bin/uautomizer-DrprNOufMa/data/273bc53bd/65ab197604b54f678ee0970c8c3cd5d6/FLAG6509fc6d2
[2021-12-06 22:19:43,856 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd14ab4a-225f-4006-89a8-126a4fe16bad/bin/uautomizer-DrprNOufMa/data/273bc53bd/65ab197604b54f678ee0970c8c3cd5d6
[2021-12-06 22:19:43,858 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-06 22:19:43,859 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-06 22:19:43,860 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-06 22:19:43,860 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-06 22:19:43,862 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-06 22:19:43,863 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:19:43" (1/1) ...
[2021-12-06 22:19:43,863 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c27833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:19:43, skipping insertion in model container
[2021-12-06 22:19:43,864 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:19:43" (1/1) ...
[2021-12-06 22:19:43,868 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-12-06 22:19:44,423 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-12-06 22:19:54,476 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_bd14ab4a-225f-4006-89a8-126a4fe16bad/sv-benchmarks/c/eca-rers2012/Problem07_label38.c[2774782,2774795]
[2021-12-06 22:19:54,533 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 22:19:54,548 INFO  L203         MainTranslator]: Completed pre-run
[2021-12-06 22:20:00,763 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_bd14ab4a-225f-4006-89a8-126a4fe16bad/sv-benchmarks/c/eca-rers2012/Problem07_label38.c[2774782,2774795]
[2021-12-06 22:20:00,767 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 22:20:01,527 INFO  L208         MainTranslator]: Completed translation
[2021-12-06 22:20:01,527 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:01 WrapperNode
[2021-12-06 22:20:01,527 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-06 22:20:01,528 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-06 22:20:01,528 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-06 22:20:01,528 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-06 22:20:01,534 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:01" (1/1) ...
[2021-12-06 22:20:01,912 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:01" (1/1) ...
[2021-12-06 22:20:03,475 INFO  L137                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2021-12-06 22:20:03,475 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-06 22:20:03,476 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-06 22:20:03,476 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-06 22:20:03,476 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-12-06 22:20:03,485 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:01" (1/1) ...
[2021-12-06 22:20:03,485 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:01" (1/1) ...
[2021-12-06 22:20:03,707 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:01" (1/1) ...
[2021-12-06 22:20:03,707 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:01" (1/1) ...
[2021-12-06 22:20:04,393 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:01" (1/1) ...
[2021-12-06 22:20:04,536 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:01" (1/1) ...
[2021-12-06 22:20:04,633 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:01" (1/1) ...
[2021-12-06 22:20:04,909 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-06 22:20:04,910 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-06 22:20:04,910 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-12-06 22:20:04,910 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-12-06 22:20:04,912 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:01" (1/1) ...
[2021-12-06 22:20:04,918 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 22:20:04,927 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd14ab4a-225f-4006-89a8-126a4fe16bad/bin/uautomizer-DrprNOufMa/z3
[2021-12-06 22:20:04,937 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd14ab4a-225f-4006-89a8-126a4fe16bad/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-12-06 22:20:04,938 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd14ab4a-225f-4006-89a8-126a4fe16bad/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-12-06 22:20:04,967 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-06 22:20:04,967 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-06 22:20:04,967 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-06 22:20:04,967 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-06 22:20:05,075 INFO  L236             CfgBuilder]: Building ICFG
[2021-12-06 22:20:05,076 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-06 22:20:28,613 INFO  L277             CfgBuilder]: Performing block encoding
[2021-12-06 22:20:28,656 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-06 22:20:28,656 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-06 22:20:28,664 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:20:28 BoogieIcfgContainer
[2021-12-06 22:20:28,665 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-06 22:20:28,666 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-06 22:20:28,666 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-12-06 22:20:28,668 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-12-06 22:20:28,669 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:19:43" (1/3) ...
[2021-12-06 22:20:28,669 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a204aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:20:28, skipping insertion in model container
[2021-12-06 22:20:28,669 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:01" (2/3) ...
[2021-12-06 22:20:28,670 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a204aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:20:28, skipping insertion in model container
[2021-12-06 22:20:28,670 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:20:28" (3/3) ...
[2021-12-06 22:20:28,671 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem07_label38.c
[2021-12-06 22:20:28,674 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-06 22:20:28,674 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-06 22:20:28,738 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-06 22:20:28,745 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 22:20:28,745 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-06 22:20:28,884 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 22:20:29,512 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10134
[2021-12-06 22:20:29,512 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 22:20:29,517 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 22:20:29,520 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 22:20:29,530 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 22:20:29,536 INFO  L85        PathProgramCache]: Analyzing trace with hash 2070377049, now seen corresponding path program 1 times
[2021-12-06 22:20:29,542 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 22:20:29,542 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019211337]
[2021-12-06 22:20:29,545 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 22:20:29,545 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 22:20:31,203 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 22:20:52,649 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 22:20:52,649 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 22:20:52,649 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019211337]
[2021-12-06 22:20:52,650 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019211337] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 22:20:52,650 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 22:20:52,652 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 22:20:52,653 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962162138]
[2021-12-06 22:20:52,653 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 22:20:52,666 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 22:20:52,667 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 22:20:52,685 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 22:20:52,686 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:20:52,710 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 3377.6666666666665) internal successors, (10133), 2 states have internal predecessors, (10133), 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 22:21:17,132 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 22:21:17,132 INFO  L93              Difference]: Finished difference Result 30705 states and 61134 transitions.
[2021-12-06 22:21:17,133 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 22:21:17,136 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3377.6666666666665) internal successors, (10133), 2 states have internal predecessors, (10133), 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 22:21:17,161 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 22:21:17,282 INFO  L225             Difference]: With dead ends: 30705
[2021-12-06 22:21:17,282 INFO  L226             Difference]: Without dead ends: 20384
[2021-12-06 22:21:17,298 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 22:21:17,301 INFO  L933         BasicCegarLoop]: 4082 mSDtfsCounter, 455 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 31005 mSolverCounterSat, 12527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 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, 23.9s IncrementalHoareTripleChecker+Time
[2021-12-06 22:21:17,301 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 4135 Invalid, 43532 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12527 Valid, 31005 Invalid, 0 Unknown, 0 Unchecked, 23.9s Time]
[2021-12-06 22:21:17,337 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20384 states.
[2021-12-06 22:21:17,722 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20384 to 20384.
[2021-12-06 22:21:17,748 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 22:21:17,796 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20384 states to 20384 states and 36578 transitions.
[2021-12-06 22:21:17,797 INFO  L78                 Accepts]: Start accepts. Automaton has 20384 states and 36578 transitions. Word has length 10133
[2021-12-06 22:21:17,810 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 22:21:17,810 INFO  L470      AbstractCegarLoop]: Abstraction has 20384 states and 36578 transitions.
[2021-12-06 22:21:17,812 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3377.6666666666665) internal successors, (10133), 2 states have internal predecessors, (10133), 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 22:21:17,812 INFO  L276                IsEmpty]: Start isEmpty. Operand 20384 states and 36578 transitions.
[2021-12-06 22:21:18,517 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10138
[2021-12-06 22:21:18,517 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 22:21:18,522 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 22:21:18,522 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-06 22:21:18,523 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 22:21:18,523 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 22:21:18,526 INFO  L85        PathProgramCache]: Analyzing trace with hash 1231455537, now seen corresponding path program 1 times
[2021-12-06 22:21:18,526 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 22:21:18,526 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100058441]
[2021-12-06 22:21:18,527 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 22:21:18,527 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 22:21:19,353 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 22:21:30,367 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 22:21:30,368 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 22:21:30,368 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100058441]
[2021-12-06 22:21:30,368 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100058441] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 22:21:30,469 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 22:21:30,471 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 22:21:30,471 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439010570]
[2021-12-06 22:21:30,471 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 22:21:30,483 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 22:21:30,484 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 22:21:30,484 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 22:21:30,484 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:21:30,487 INFO  L87              Difference]: Start difference. First operand 20384 states and 36578 transitions. Second operand  has 3 states, 3 states have (on average 3379.0) internal successors, (10137), 2 states have internal predecessors, (10137), 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 22:21:53,803 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 22:21:53,804 INFO  L93              Difference]: Finished difference Result 61146 states and 109729 transitions.
[2021-12-06 22:21:53,804 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 22:21:53,806 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3379.0) internal successors, (10137), 2 states have internal predecessors, (10137), 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 10137
[2021-12-06 22:21:53,806 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 22:21:53,876 INFO  L225             Difference]: With dead ends: 61146
[2021-12-06 22:21:53,876 INFO  L226             Difference]: Without dead ends: 40764
[2021-12-06 22:21:53,893 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 22:21:53,894 INFO  L933         BasicCegarLoop]: 4828 mSDtfsCounter, 13865 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28700 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13865 SdHoareTripleChecker+Valid, 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, 22.8s IncrementalHoareTripleChecker+Time
[2021-12-06 22:21:53,895 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13865 Valid, 4877 Invalid, 40458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28700 Invalid, 0 Unknown, 0 Unchecked, 22.8s Time]
[2021-12-06 22:21:53,928 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40764 states.
[2021-12-06 22:21:54,303 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 40764.
[2021-12-06 22:21:54,335 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 22:21:54,391 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40764 states to 40764 states and 65509 transitions.
[2021-12-06 22:21:54,391 INFO  L78                 Accepts]: Start accepts. Automaton has 40764 states and 65509 transitions. Word has length 10137
[2021-12-06 22:21:54,393 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 22:21:54,393 INFO  L470      AbstractCegarLoop]: Abstraction has 40764 states and 65509 transitions.
[2021-12-06 22:21:54,394 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3379.0) internal successors, (10137), 2 states have internal predecessors, (10137), 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 22:21:54,394 INFO  L276                IsEmpty]: Start isEmpty. Operand 40764 states and 65509 transitions.
[2021-12-06 22:21:54,966 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10140
[2021-12-06 22:21:54,966 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 22:21:54,971 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 22:21:54,971 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-06 22:21:54,972 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 22:21:54,972 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 22:21:54,974 INFO  L85        PathProgramCache]: Analyzing trace with hash -1687081802, now seen corresponding path program 1 times
[2021-12-06 22:21:54,975 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 22:21:54,975 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863368027]
[2021-12-06 22:21:54,976 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 22:21:54,976 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 22:21:55,800 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 22:22:06,163 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 22:22:06,163 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 22:22:06,163 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863368027]
[2021-12-06 22:22:06,164 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863368027] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 22:22:06,164 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 22:22:06,165 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 22:22:06,165 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061291507]
[2021-12-06 22:22:06,165 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 22:22:06,171 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 22:22:06,172 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 22:22:06,172 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 22:22:06,172 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:22:06,174 INFO  L87              Difference]: Start difference. First operand 40764 states and 65509 transitions. Second operand  has 3 states, 3 states have (on average 3379.6666666666665) internal successors, (10139), 2 states have internal predecessors, (10139), 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 22:22:28,954 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 22:22:28,954 INFO  L93              Difference]: Finished difference Result 122286 states and 196522 transitions.
[2021-12-06 22:22:28,954 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 22:22:28,956 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3379.6666666666665) internal successors, (10139), 2 states have internal predecessors, (10139), 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 10139
[2021-12-06 22:22:28,956 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 22:22:29,035 INFO  L225             Difference]: With dead ends: 122286
[2021-12-06 22:22:29,035 INFO  L226             Difference]: Without dead ends: 81524
[2021-12-06 22:22:29,070 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 22:22:29,071 INFO  L933         BasicCegarLoop]: 4820 mSDtfsCounter, 13685 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28825 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s 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, 22.1s IncrementalHoareTripleChecker+Time
[2021-12-06 22:22:29,071 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13685 Valid, 4869 Invalid, 40502 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 28825 Invalid, 0 Unknown, 0 Unchecked, 22.1s Time]
[2021-12-06 22:22:29,128 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81524 states.
[2021-12-06 22:22:29,755 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81524 to 81524.
[2021-12-06 22:22:29,809 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 22:22:29,913 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81524 states to 81524 states and 119393 transitions.
[2021-12-06 22:22:29,913 INFO  L78                 Accepts]: Start accepts. Automaton has 81524 states and 119393 transitions. Word has length 10139
[2021-12-06 22:22:29,915 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 22:22:29,915 INFO  L470      AbstractCegarLoop]: Abstraction has 81524 states and 119393 transitions.
[2021-12-06 22:22:29,916 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3379.6666666666665) internal successors, (10139), 2 states have internal predecessors, (10139), 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 22:22:29,916 INFO  L276                IsEmpty]: Start isEmpty. Operand 81524 states and 119393 transitions.
[2021-12-06 22:22:30,641 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10151
[2021-12-06 22:22:30,642 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 22:22:30,646 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 22:22:30,647 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-12-06 22:22:30,647 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 22:22:30,647 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 22:22:30,649 INFO  L85        PathProgramCache]: Analyzing trace with hash 1785280285, now seen corresponding path program 1 times
[2021-12-06 22:22:30,650 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 22:22:30,650 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286449478]
[2021-12-06 22:22:30,650 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 22:22:30,650 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 22:22:31,481 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 22:22:42,598 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 22:22:42,599 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 22:22:42,599 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286449478]
[2021-12-06 22:22:42,599 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286449478] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 22:22:42,599 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 22:22:42,600 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 22:22:42,600 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324858365]
[2021-12-06 22:22:42,601 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 22:22:42,611 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 22:22:42,611 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 22:22:42,612 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 22:22:42,612 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:22:42,614 INFO  L87              Difference]: Start difference. First operand 81524 states and 119393 transitions. Second operand  has 3 states, 3 states have (on average 3381.6666666666665) internal successors, (10145), 2 states have internal predecessors, (10145), 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 22:23:07,006 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 22:23:07,006 INFO  L93              Difference]: Finished difference Result 244566 states and 358174 transitions.
[2021-12-06 22:23:07,006 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 22:23:07,007 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3381.6666666666665) internal successors, (10145), 2 states have internal predecessors, (10145), 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 10150
[2021-12-06 22:23:07,007 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 22:23:07,150 INFO  L225             Difference]: With dead ends: 244566
[2021-12-06 22:23:07,150 INFO  L226             Difference]: Without dead ends: 163044
[2021-12-06 22:23:07,185 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 22:23:07,186 INFO  L933         BasicCegarLoop]: 6091 mSDtfsCounter, 13473 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27528 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s 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, 23.4s IncrementalHoareTripleChecker+Time
[2021-12-06 22:23:07,186 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13473 Valid, 6140 Invalid, 40558 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27528 Invalid, 0 Unknown, 0 Unchecked, 23.4s Time]
[2021-12-06 22:23:07,283 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 163044 states.
[2021-12-06 22:23:08,312 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 163044 to 163044.
[2021-12-06 22:23:08,414 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 22:23:08,624 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163044 states to 163044 states and 217009 transitions.
[2021-12-06 22:23:08,624 INFO  L78                 Accepts]: Start accepts. Automaton has 163044 states and 217009 transitions. Word has length 10150
[2021-12-06 22:23:08,625 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 22:23:08,626 INFO  L470      AbstractCegarLoop]: Abstraction has 163044 states and 217009 transitions.
[2021-12-06 22:23:08,627 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3381.6666666666665) internal successors, (10145), 2 states have internal predecessors, (10145), 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 22:23:08,627 INFO  L276                IsEmpty]: Start isEmpty. Operand 163044 states and 217009 transitions.
[2021-12-06 22:23:09,571 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10182
[2021-12-06 22:23:09,571 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 22:23:09,576 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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[2021-12-06 22:23:09,577 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-12-06 22:23:09,577 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 22:23:09,577 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 22:23:09,579 INFO  L85        PathProgramCache]: Analyzing trace with hash -1752435041, now seen corresponding path program 1 times
[2021-12-06 22:23:09,580 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 22:23:09,580 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812394335]
[2021-12-06 22:23:09,580 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 22:23:09,581 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 22:23:10,388 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 22:23:21,073 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 22:23:21,074 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 22:23:21,074 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812394335]
[2021-12-06 22:23:21,074 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812394335] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 22:23:21,074 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 22:23:21,075 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 22:23:21,075 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183605432]
[2021-12-06 22:23:21,076 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 22:23:21,082 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 22:23:21,082 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 22:23:21,083 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 22:23:21,083 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:23:21,085 INFO  L87              Difference]: Start difference. First operand 163044 states and 217009 transitions. Second operand  has 3 states, 3 states have (on average 3393.6666666666665) internal successors, (10181), 2 states have internal predecessors, (10181), 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 22:23:46,490 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 22:23:46,490 INFO  L93              Difference]: Finished difference Result 489126 states and 651022 transitions.
[2021-12-06 22:23:46,490 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 22:23:46,491 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3393.6666666666665) internal successors, (10181), 2 states have internal predecessors, (10181), 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 10181
[2021-12-06 22:23:46,491 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 22:23:46,924 INFO  L225             Difference]: With dead ends: 489126
[2021-12-06 22:23:46,924 INFO  L226             Difference]: Without dead ends: 326084
[2021-12-06 22:23:46,988 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 22:23:46,989 INFO  L933         BasicCegarLoop]: 7313 mSDtfsCounter, 11767 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 30511 mSolverCounterSat, 11081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11767 SdHoareTripleChecker+Valid, 7363 SdHoareTripleChecker+Invalid, 41592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11081 IncrementalHoareTripleChecker+Valid, 30511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time
[2021-12-06 22:23:46,989 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [11767 Valid, 7363 Invalid, 41592 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11081 Valid, 30511 Invalid, 0 Unknown, 0 Unchecked, 23.8s Time]
[2021-12-06 22:23:47,188 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 326084 states.
[2021-12-06 22:23:49,518 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 326084 to 326084.
[2021-12-06 22:23:49,717 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 326084 states, 326083 states have (on average 1.2539108141178779) internal successors, (408879), 326083 states have internal predecessors, (408879), 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 22:23:50,126 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 326084 states to 326084 states and 408879 transitions.
[2021-12-06 22:23:50,126 INFO  L78                 Accepts]: Start accepts. Automaton has 326084 states and 408879 transitions. Word has length 10181
[2021-12-06 22:23:50,128 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 22:23:50,128 INFO  L470      AbstractCegarLoop]: Abstraction has 326084 states and 408879 transitions.
[2021-12-06 22:23:50,129 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3393.6666666666665) internal successors, (10181), 2 states have internal predecessors, (10181), 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 22:23:50,129 INFO  L276                IsEmpty]: Start isEmpty. Operand 326084 states and 408879 transitions.
[2021-12-06 22:23:51,300 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10275
[2021-12-06 22:23:51,301 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 22:23:51,306 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:51,306 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-12-06 22:23:51,306 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 22:23:51,307 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 22:23:51,310 INFO  L85        PathProgramCache]: Analyzing trace with hash -1091793599, now seen corresponding path program 1 times
[2021-12-06 22:23:51,310 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 22:23:51,311 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540171704]
[2021-12-06 22:23:51,312 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 22:23:51,312 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 22:23:52,141 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 22:24:03,200 INFO  L134       CoverageAnalysis]: Checked inductivity of 183 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2021-12-06 22:24:03,200 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 22:24:03,200 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540171704]
[2021-12-06 22:24:03,201 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540171704] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 22:24:03,201 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 22:24:03,202 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 22:24:03,202 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971789956]
[2021-12-06 22:24:03,202 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 22:24:03,209 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 22:24:03,209 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 22:24:03,209 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 22:24:03,209 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:24:03,211 INFO  L87              Difference]: Start difference. First operand 326084 states and 408879 transitions. Second operand  has 3 states, 3 states have (on average 3411.6666666666665) internal successors, (10235), 2 states have internal predecessors, (10235), 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 22:24:28,298 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 22:24:28,299 INFO  L93              Difference]: Finished difference Result 978246 states and 1226632 transitions.
[2021-12-06 22:24:28,299 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 22:24:28,300 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3411.6666666666665) internal successors, (10235), 2 states have internal predecessors, (10235), 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 10274
[2021-12-06 22:24:28,300 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 22:24:29,063 INFO  L225             Difference]: With dead ends: 978246
[2021-12-06 22:24:29,063 INFO  L226             Difference]: Without dead ends: 652164
[2021-12-06 22:24:29,175 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 22:24:29,176 INFO  L933         BasicCegarLoop]: 5914 mSDtfsCounter, 12559 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29825 mSolverCounterSat, 11034 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s 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, 22.7s IncrementalHoareTripleChecker+Time
[2021-12-06 22:24:29,177 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12559 Valid, 5963 Invalid, 40859 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11034 Valid, 29825 Invalid, 0 Unknown, 0 Unchecked, 22.7s Time]
[2021-12-06 22:24:29,559 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 652164 states.
[2021-12-06 22:24:34,325 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 652164 to 652164.
[2021-12-06 22:24:34,778 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 652164 states, 652163 states have (on average 1.1903205180300016) internal successors, (776283), 652163 states have internal predecessors, (776283), 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 22:24:35,790 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 652164 states to 652164 states and 776283 transitions.
[2021-12-06 22:24:35,790 INFO  L78                 Accepts]: Start accepts. Automaton has 652164 states and 776283 transitions. Word has length 10274
[2021-12-06 22:24:35,791 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 22:24:35,791 INFO  L470      AbstractCegarLoop]: Abstraction has 652164 states and 776283 transitions.
[2021-12-06 22:24:35,792 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3411.6666666666665) internal successors, (10235), 2 states have internal predecessors, (10235), 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 22:24:35,792 INFO  L276                IsEmpty]: Start isEmpty. Operand 652164 states and 776283 transitions.
[2021-12-06 22:24:37,218 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10369
[2021-12-06 22:24:37,218 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 22:24:37,220 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 22:24:37,220 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-12-06 22:24:37,220 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 22:24:37,221 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 22:24:37,222 INFO  L85        PathProgramCache]: Analyzing trace with hash 344397968, now seen corresponding path program 1 times
[2021-12-06 22:24:37,222 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 22:24:37,222 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441256177]
[2021-12-06 22:24:37,223 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 22:24:37,223 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 22:24:38,078 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 22:24:48,493 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 22:24:48,494 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 22:24:48,494 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441256177]
[2021-12-06 22:24:48,494 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441256177] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 22:24:48,494 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 22:24:48,495 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 22:24:48,495 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207150917]
[2021-12-06 22:24:48,496 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 22:24:48,500 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 22:24:48,500 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 22:24:48,500 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 22:24:48,500 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:24:48,502 INFO  L87              Difference]: Start difference. First operand 652164 states and 776283 transitions. Second operand  has 3 states, 3 states have (on average 3456.0) internal successors, (10368), 2 states have internal predecessors, (10368), 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 22:25:11,817 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 22:25:11,817 INFO  L93              Difference]: Finished difference Result 1304326 states and 1552564 transitions.
[2021-12-06 22:25:11,818 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 22:25:11,819 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3456.0) internal successors, (10368), 2 states have internal predecessors, (10368), 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 10368
[2021-12-06 22:25:11,820 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 22:25:12,619 INFO  L225             Difference]: With dead ends: 1304326
[2021-12-06 22:25:12,620 INFO  L226             Difference]: Without dead ends: 652164
[2021-12-06 22:25:12,799 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 22:25:12,799 INFO  L933         BasicCegarLoop]: 9997 mSDtfsCounter, 10037 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29586 mSolverCounterSat, 4825 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s 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, 20.2s IncrementalHoareTripleChecker+Time
[2021-12-06 22:25:12,800 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10037 Valid, 10046 Invalid, 34411 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4825 Valid, 29586 Invalid, 0 Unknown, 0 Unchecked, 20.2s Time]
[2021-12-06 22:25:13,213 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 652164 states.
[2021-12-06 22:25:18,114 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 652164 to 652164.
[2021-12-06 22:25:18,372 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 652164 states, 652163 states have (on average 1.1895845057140624) internal successors, (775803), 652163 states have internal predecessors, (775803), 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 22:25:19,416 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 652164 states to 652164 states and 775803 transitions.
[2021-12-06 22:25:19,416 INFO  L78                 Accepts]: Start accepts. Automaton has 652164 states and 775803 transitions. Word has length 10368
[2021-12-06 22:25:19,417 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 22:25:19,417 INFO  L470      AbstractCegarLoop]: Abstraction has 652164 states and 775803 transitions.
[2021-12-06 22:25:19,418 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3456.0) internal successors, (10368), 2 states have internal predecessors, (10368), 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 22:25:19,418 INFO  L276                IsEmpty]: Start isEmpty. Operand 652164 states and 775803 transitions.
[2021-12-06 22:25:20,993 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10609
[2021-12-06 22:25:20,993 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 22:25:20,996 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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[2021-12-06 22:25:20,996 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-12-06 22:25:20,996 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 22:25:20,997 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 22:25:20,998 INFO  L85        PathProgramCache]: Analyzing trace with hash 377691493, now seen corresponding path program 1 times
[2021-12-06 22:25:20,998 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 22:25:20,998 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980211946]
[2021-12-06 22:25:20,999 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 22:25:20,999 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 22:25:21,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 22:25:32,418 INFO  L134       CoverageAnalysis]: Checked inductivity of 472 backedges. 472 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 22:25:32,419 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 22:25:32,419 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980211946]
[2021-12-06 22:25:32,419 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980211946] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 22:25:32,419 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 22:25:32,421 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 22:25:32,421 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627958343]
[2021-12-06 22:25:32,421 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 22:25:32,427 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 22:25:32,427 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 22:25:32,427 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 22:25:32,427 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:25:32,429 INFO  L87              Difference]: Start difference. First operand 652164 states and 775803 transitions. Second operand  has 3 states, 3 states have (on average 3536.0) internal successors, (10608), 2 states have internal predecessors, (10608), 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 22:26:00,498 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 22:26:00,498 INFO  L93              Difference]: Finished difference Result 1956486 states and 2327404 transitions.
[2021-12-06 22:26:00,498 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 22:26:00,500 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3536.0) internal successors, (10608), 2 states have internal predecessors, (10608), 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 10608
[2021-12-06 22:26:00,500 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 22:26:02,006 INFO  L225             Difference]: With dead ends: 1956486
[2021-12-06 22:26:02,006 INFO  L226             Difference]: Without dead ends: 1304324
[2021-12-06 22:26:02,432 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 22:26:02,433 INFO  L933         BasicCegarLoop]: 6139 mSDtfsCounter, 12113 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30458 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12113 SdHoareTripleChecker+Valid, 6188 SdHoareTripleChecker+Invalid, 40959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 30458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time
[2021-12-06 22:26:02,433 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12113 Valid, 6188 Invalid, 40959 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 30458 Invalid, 0 Unknown, 0 Unchecked, 23.2s Time]
[2021-12-06 22:26:03,322 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1304324 states.
[2021-12-06 22:26:12,896 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304324 to 1304324.
[2021-12-06 22:26:13,403 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1304324 states, 1304323 states have (on average 1.143588666304282) internal successors, (1491609), 1304323 states have internal predecessors, (1491609), 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 22:26:15,952 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1304324 states to 1304324 states and 1491609 transitions.
[2021-12-06 22:26:15,953 INFO  L78                 Accepts]: Start accepts. Automaton has 1304324 states and 1491609 transitions. Word has length 10608
[2021-12-06 22:26:15,954 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 22:26:15,954 INFO  L470      AbstractCegarLoop]: Abstraction has 1304324 states and 1491609 transitions.
[2021-12-06 22:26:15,955 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3536.0) internal successors, (10608), 2 states have internal predecessors, (10608), 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 22:26:15,955 INFO  L276                IsEmpty]: Start isEmpty. Operand 1304324 states and 1491609 transitions.
[2021-12-06 22:26:17,969 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10718
[2021-12-06 22:26:17,969 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 22:26:17,971 INFO  L514         BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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[2021-12-06 22:26:17,972 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2021-12-06 22:26:17,972 INFO  L402      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 22:26:17,972 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 22:26:17,973 INFO  L85        PathProgramCache]: Analyzing trace with hash 431928170, now seen corresponding path program 1 times
[2021-12-06 22:26:17,974 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 22:26:17,974 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173724288]
[2021-12-06 22:26:17,975 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 22:26:17,975 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 22:26:18,952 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 22:26:29,817 INFO  L134       CoverageAnalysis]: Checked inductivity of 822 backedges. 578 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked.
[2021-12-06 22:26:29,818 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 22:26:29,818 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173724288]
[2021-12-06 22:26:29,818 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173724288] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 22:26:29,818 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 22:26:29,819 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 22:26:29,819 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412518882]
[2021-12-06 22:26:29,820 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 22:26:29,824 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 22:26:29,824 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 22:26:29,824 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 22:26:29,825 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 22:26:29,827 INFO  L87              Difference]: Start difference. First operand 1304324 states and 1491609 transitions. Second operand  has 3 states, 3 states have (on average 3520.6666666666665) internal successors, (10562), 2 states have internal predecessors, (10562), 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)