./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem05_label56.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 5e519f3a
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2870dc59-6856-408a-b5a2-c51306f54f57/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2870dc59-6856-408a-b5a2-c51306f54f57/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2870dc59-6856-408a-b5a2-c51306f54f57/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2870dc59-6856-408a-b5a2-c51306f54f57/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem05_label56.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2870dc59-6856-408a-b5a2-c51306f54f57/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2870dc59-6856-408a-b5a2-c51306f54f57/bin/uautomizer-Dbtcem3rbc --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 c05e0afe400610a03af7f85bf1fa08609bbde642205244db1c80922af0f91249
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-5e519f3
[2022-11-02 21:01:12,611 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-11-02 21:01:12,614 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-02 21:01:12,672 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-02 21:01:12,673 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-02 21:01:12,677 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-02 21:01:12,680 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-02 21:01:12,684 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-02 21:01:12,687 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-02 21:01:12,693 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-02 21:01:12,694 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-11-02 21:01:12,697 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-02 21:01:12,697 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-02 21:01:12,700 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-02 21:01:12,703 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-02 21:01:12,705 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-02 21:01:12,706 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-02 21:01:12,707 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-02 21:01:12,709 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-02 21:01:12,719 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-02 21:01:12,720 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-02 21:01:12,722 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-02 21:01:12,726 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-11-02 21:01:12,727 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-02 21:01:12,736 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-02 21:01:12,736 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-02 21:01:12,737 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-02 21:01:12,739 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-02 21:01:12,739 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-02 21:01:12,740 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-02 21:01:12,742 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-02 21:01:12,743 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-02 21:01:12,745 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-02 21:01:12,747 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-02 21:01:12,748 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-02 21:01:12,749 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-02 21:01:12,749 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-02 21:01:12,750 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-02 21:01:12,750 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-02 21:01:12,751 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-02 21:01:12,752 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-11-02 21:01:12,753 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2870dc59-6856-408a-b5a2-c51306f54f57/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-11-02 21:01:12,798 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-11-02 21:01:12,798 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-02 21:01:12,799 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-02 21:01:12,799 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-02 21:01:12,800 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-02 21:01:12,801 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-02 21:01:12,801 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-02 21:01:12,802 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-11-02 21:01:12,802 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-11-02 21:01:12,802 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-02 21:01:12,804 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-11-02 21:01:12,804 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-11-02 21:01:12,804 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-11-02 21:01:12,804 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-11-02 21:01:12,805 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-11-02 21:01:12,805 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-02 21:01:12,805 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-11-02 21:01:12,805 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-11-02 21:01:12,806 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-11-02 21:01:12,806 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-11-02 21:01:12,806 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-11-02 21:01:12,806 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-02 21:01:12,807 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-11-02 21:01:12,807 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-11-02 21:01:12,807 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 21:01:12,808 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-02 21:01:12,809 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-11-02 21:01:12,810 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-02 21:01:12,810 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-11-02 21:01:12,810 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-02 21:01:12,810 INFO  L138        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2022-11-02 21:01:12,811 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-02 21:01:12,811 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-02 21:01:12,811 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_2870dc59-6856-408a-b5a2-c51306f54f57/bin/uautomizer-Dbtcem3rbc/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_2870dc59-6856-408a-b5a2-c51306f54f57/bin/uautomizer-Dbtcem3rbc
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 -> c05e0afe400610a03af7f85bf1fa08609bbde642205244db1c80922af0f91249
[2022-11-02 21:01:13,099 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-02 21:01:13,150 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-02 21:01:13,153 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-02 21:01:13,155 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-11-02 21:01:13,156 INFO  L275        PluginConnector]: CDTParser initialized
[2022-11-02 21:01:13,158 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2870dc59-6856-408a-b5a2-c51306f54f57/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/eca-rers2012/Problem05_label56.c
[2022-11-02 21:01:13,248 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2870dc59-6856-408a-b5a2-c51306f54f57/bin/uautomizer-Dbtcem3rbc/data/bad2d8672/3b056388c1314f08b5f01e40209ffebd/FLAGb1ef24b33
[2022-11-02 21:01:14,331 INFO  L306              CDTParser]: Found 1 translation units.
[2022-11-02 21:01:14,332 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2870dc59-6856-408a-b5a2-c51306f54f57/sv-benchmarks/c/eca-rers2012/Problem05_label56.c
[2022-11-02 21:01:14,403 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2870dc59-6856-408a-b5a2-c51306f54f57/bin/uautomizer-Dbtcem3rbc/data/bad2d8672/3b056388c1314f08b5f01e40209ffebd/FLAGb1ef24b33
[2022-11-02 21:01:14,646 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2870dc59-6856-408a-b5a2-c51306f54f57/bin/uautomizer-Dbtcem3rbc/data/bad2d8672/3b056388c1314f08b5f01e40209ffebd
[2022-11-02 21:01:14,648 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-02 21:01:14,651 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-02 21:01:14,654 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-02 21:01:14,655 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-02 21:01:14,658 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-02 21:01:14,659 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:14" (1/1) ...
[2022-11-02 21:01:14,661 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f8af357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:14, skipping insertion in model container
[2022-11-02 21:01:14,661 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:14" (1/1) ...
[2022-11-02 21:01:14,670 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-11-02 21:01:14,939 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-11-02 21:01:17,228 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_2870dc59-6856-408a-b5a2-c51306f54f57/sv-benchmarks/c/eca-rers2012/Problem05_label56.c[379708,379721]
[2022-11-02 21:01:17,252 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-02 21:01:17,264 INFO  L203         MainTranslator]: Completed pre-run
[2022-11-02 21:01:18,558 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_2870dc59-6856-408a-b5a2-c51306f54f57/sv-benchmarks/c/eca-rers2012/Problem05_label56.c[379708,379721]
[2022-11-02 21:01:18,567 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-02 21:01:18,633 INFO  L208         MainTranslator]: Completed translation
[2022-11-02 21:01:18,634 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:18 WrapperNode
[2022-11-02 21:01:18,634 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-02 21:01:18,636 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-02 21:01:18,637 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-02 21:01:18,637 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-02 21:01:18,645 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:18" (1/1) ...
[2022-11-02 21:01:18,759 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:18" (1/1) ...
[2022-11-02 21:01:19,152 INFO  L138                Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 12346
[2022-11-02 21:01:19,153 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-02 21:01:19,154 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-02 21:01:19,154 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-02 21:01:19,155 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-11-02 21:01:19,165 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:18" (1/1) ...
[2022-11-02 21:01:19,166 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:18" (1/1) ...
[2022-11-02 21:01:19,328 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:18" (1/1) ...
[2022-11-02 21:01:19,329 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:18" (1/1) ...
[2022-11-02 21:01:19,481 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:18" (1/1) ...
[2022-11-02 21:01:19,606 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:18" (1/1) ...
[2022-11-02 21:01:19,630 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:18" (1/1) ...
[2022-11-02 21:01:19,653 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:18" (1/1) ...
[2022-11-02 21:01:19,730 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-02 21:01:19,731 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-02 21:01:19,742 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-11-02 21:01:19,743 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-11-02 21:01:19,744 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:18" (1/1) ...
[2022-11-02 21:01:19,762 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 21:01:19,773 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2870dc59-6856-408a-b5a2-c51306f54f57/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 21:01:19,812 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2870dc59-6856-408a-b5a2-c51306f54f57/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-02 21:01:19,870 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2870dc59-6856-408a-b5a2-c51306f54f57/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-02 21:01:19,934 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-02 21:01:19,934 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-02 21:01:19,934 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-02 21:01:19,934 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-02 21:01:20,086 INFO  L235             CfgBuilder]: Building ICFG
[2022-11-02 21:01:20,088 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-02 21:01:28,966 INFO  L276             CfgBuilder]: Performing block encoding
[2022-11-02 21:01:28,995 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-02 21:01:28,995 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-11-02 21:01:29,000 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:01:29 BoogieIcfgContainer
[2022-11-02 21:01:29,001 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-02 21:01:29,003 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-02 21:01:29,004 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-11-02 21:01:29,007 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-11-02 21:01:29,007 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:01:14" (1/3) ...
[2022-11-02 21:01:29,008 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e6d294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:01:29, skipping insertion in model container
[2022-11-02 21:01:29,008 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:18" (2/3) ...
[2022-11-02 21:01:29,009 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e6d294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:01:29, skipping insertion in model container
[2022-11-02 21:01:29,009 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:01:29" (3/3) ...
[2022-11-02 21:01:29,011 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label56.c
[2022-11-02 21:01:29,030 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-02 21:01:29,031 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-02 21:01:29,123 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 21:01:29,139 INFO  L357      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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@319a2528, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 21:01:29,140 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-11-02 21:01:29,157 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 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)
[2022-11-02 21:01:29,298 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1674
[2022-11-02 21:01:29,298 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 21:01:29,301 INFO  L195           NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:01:29,302 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:01:29,309 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:01:29,310 INFO  L85        PathProgramCache]: Analyzing trace with hash 197007929, now seen corresponding path program 1 times
[2022-11-02 21:01:29,319 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:01:29,320 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298189021]
[2022-11-02 21:01:29,321 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:01:29,321 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:01:30,248 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:01:37,925 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:01:37,925 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:01:37,926 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298189021]
[2022-11-02 21:01:37,926 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298189021] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:01:37,927 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:01:37,927 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 21:01:37,928 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147982007]
[2022-11-02 21:01:37,929 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:01:37,938 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 21:01:37,938 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:01:37,970 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 21:01:37,971 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 21:01:37,979 INFO  L87              Difference]: Start difference. First operand  has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 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 4 states, 4 states have (on average 418.25) internal successors, (1673), 3 states have internal predecessors, (1673), 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)
[2022-11-02 21:01:58,652 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:01:58,653 INFO  L93              Difference]: Finished difference Result 9493 states and 18317 transitions.
[2022-11-02 21:01:58,654 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-11-02 21:01:58,656 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 418.25) internal successors, (1673), 3 states have internal predecessors, (1673), 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 1673
[2022-11-02 21:01:58,664 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:01:58,736 INFO  L225             Difference]: With dead ends: 9493
[2022-11-02 21:01:58,736 INFO  L226             Difference]: Without dead ends: 7238
[2022-11-02 21:01:58,748 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 21:01:58,752 INFO  L413           NwaCegarLoop]: 2350 mSDtfsCounter, 3666 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 13848 mSolverCounterSat, 5280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3666 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 19128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5280 IncrementalHoareTripleChecker+Valid, 13848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time
[2022-11-02 21:01:58,754 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3666 Valid, 2735 Invalid, 19128 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5280 Valid, 13848 Invalid, 0 Unknown, 0 Unchecked, 19.9s Time]
[2022-11-02 21:01:58,788 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7238 states.
[2022-11-02 21:01:59,026 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7238 to 5583.
[2022-11-02 21:01:59,040 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5583 states, 5582 states have (on average 1.5829451809387316) internal successors, (8836), 5582 states have internal predecessors, (8836), 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)
[2022-11-02 21:01:59,065 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5583 states to 5583 states and 8836 transitions.
[2022-11-02 21:01:59,067 INFO  L78                 Accepts]: Start accepts. Automaton has 5583 states and 8836 transitions. Word has length 1673
[2022-11-02 21:01:59,072 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:01:59,072 INFO  L495      AbstractCegarLoop]: Abstraction has 5583 states and 8836 transitions.
[2022-11-02 21:01:59,073 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 418.25) internal successors, (1673), 3 states have internal predecessors, (1673), 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)
[2022-11-02 21:01:59,074 INFO  L276                IsEmpty]: Start isEmpty. Operand 5583 states and 8836 transitions.
[2022-11-02 21:01:59,213 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1692
[2022-11-02 21:01:59,214 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 21:01:59,215 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:01:59,216 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-02 21:01:59,216 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:01:59,217 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:01:59,218 INFO  L85        PathProgramCache]: Analyzing trace with hash 1606706727, now seen corresponding path program 1 times
[2022-11-02 21:01:59,218 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:01:59,218 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874945873]
[2022-11-02 21:01:59,219 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:01:59,219 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:01:59,723 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:02:03,019 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:02:03,020 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:02:03,020 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874945873]
[2022-11-02 21:02:03,020 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874945873] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:02:03,021 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:02:03,021 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 21:02:03,021 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359438072]
[2022-11-02 21:02:03,022 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:02:03,026 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 21:02:03,026 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:02:03,027 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 21:02:03,028 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:02:03,029 INFO  L87              Difference]: Start difference. First operand 5583 states and 8836 transitions. Second operand  has 3 states, 3 states have (on average 563.6666666666666) internal successors, (1691), 3 states have internal predecessors, (1691), 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)
[2022-11-02 21:02:11,930 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:02:11,930 INFO  L93              Difference]: Finished difference Result 14718 states and 24340 transitions.
[2022-11-02 21:02:11,937 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-02 21:02:11,939 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 563.6666666666666) internal successors, (1691), 3 states have internal predecessors, (1691), 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 1691
[2022-11-02 21:02:11,943 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:02:11,980 INFO  L225             Difference]: With dead ends: 14718
[2022-11-02 21:02:11,980 INFO  L226             Difference]: Without dead ends: 9137
[2022-11-02 21:02:11,988 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:02:11,989 INFO  L413           NwaCegarLoop]: 3085 mSDtfsCounter, 383 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 5973 mSolverCounterSat, 873 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 3513 SdHoareTripleChecker+Invalid, 6846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 873 IncrementalHoareTripleChecker+Valid, 5973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time
[2022-11-02 21:02:11,990 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 3513 Invalid, 6846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [873 Valid, 5973 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time]
[2022-11-02 21:02:12,003 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9137 states.
[2022-11-02 21:02:12,181 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9137 to 9096.
[2022-11-02 21:02:12,197 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9096 states, 9095 states have (on average 1.5478834524463991) internal successors, (14078), 9095 states have internal predecessors, (14078), 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)
[2022-11-02 21:02:12,219 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9096 states to 9096 states and 14078 transitions.
[2022-11-02 21:02:12,220 INFO  L78                 Accepts]: Start accepts. Automaton has 9096 states and 14078 transitions. Word has length 1691
[2022-11-02 21:02:12,223 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:02:12,225 INFO  L495      AbstractCegarLoop]: Abstraction has 9096 states and 14078 transitions.
[2022-11-02 21:02:12,226 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 563.6666666666666) internal successors, (1691), 3 states have internal predecessors, (1691), 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)
[2022-11-02 21:02:12,227 INFO  L276                IsEmpty]: Start isEmpty. Operand 9096 states and 14078 transitions.
[2022-11-02 21:02:12,272 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1703
[2022-11-02 21:02:12,274 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 21:02:12,276 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2022-11-02 21:02:12,280 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-11-02 21:02:12,280 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:02:12,281 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:02:12,282 INFO  L85        PathProgramCache]: Analyzing trace with hash 764093917, now seen corresponding path program 1 times
[2022-11-02 21:02:12,283 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:02:12,283 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516007059]
[2022-11-02 21:02:12,285 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:02:12,285 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:02:12,571 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:02:14,719 INFO  L134       CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:02:14,720 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:02:14,720 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516007059]
[2022-11-02 21:02:14,720 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516007059] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:02:14,721 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:02:14,721 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 21:02:14,722 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621227037]
[2022-11-02 21:02:14,722 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:02:14,724 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 21:02:14,724 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:02:14,725 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 21:02:14,725 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:02:14,726 INFO  L87              Difference]: Start difference. First operand 9096 states and 14078 transitions. Second operand  has 3 states, 3 states have (on average 567.3333333333334) internal successors, (1702), 3 states have internal predecessors, (1702), 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)
[2022-11-02 21:02:23,279 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:02:23,279 INFO  L93              Difference]: Finished difference Result 25099 states and 39859 transitions.
[2022-11-02 21:02:23,279 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-02 21:02:23,280 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 567.3333333333334) internal successors, (1702), 3 states have internal predecessors, (1702), 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 1702
[2022-11-02 21:02:23,280 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:02:23,331 INFO  L225             Difference]: With dead ends: 25099
[2022-11-02 21:02:23,332 INFO  L226             Difference]: Without dead ends: 16005
[2022-11-02 21:02:23,344 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:02:23,345 INFO  L413           NwaCegarLoop]: 3376 mSDtfsCounter, 1890 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 5194 mSolverCounterSat, 2161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 3622 SdHoareTripleChecker+Invalid, 7355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2161 IncrementalHoareTripleChecker+Valid, 5194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time
[2022-11-02 21:02:23,346 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1890 Valid, 3622 Invalid, 7355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2161 Valid, 5194 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time]
[2022-11-02 21:02:23,364 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16005 states.
[2022-11-02 21:02:23,623 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16005 to 15932.
[2022-11-02 21:02:23,650 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15932 states, 15931 states have (on average 1.4334316740945328) internal successors, (22836), 15931 states have internal predecessors, (22836), 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)
[2022-11-02 21:02:23,680 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15932 states to 15932 states and 22836 transitions.
[2022-11-02 21:02:23,681 INFO  L78                 Accepts]: Start accepts. Automaton has 15932 states and 22836 transitions. Word has length 1702
[2022-11-02 21:02:23,681 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:02:23,681 INFO  L495      AbstractCegarLoop]: Abstraction has 15932 states and 22836 transitions.
[2022-11-02 21:02:23,683 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 567.3333333333334) internal successors, (1702), 3 states have internal predecessors, (1702), 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)
[2022-11-02 21:02:23,683 INFO  L276                IsEmpty]: Start isEmpty. Operand 15932 states and 22836 transitions.
[2022-11-02 21:02:23,742 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1732
[2022-11-02 21:02:23,742 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 21:02:23,743 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:02:23,744 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-11-02 21:02:23,744 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:02:23,745 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:02:23,745 INFO  L85        PathProgramCache]: Analyzing trace with hash 576251195, now seen corresponding path program 1 times
[2022-11-02 21:02:23,746 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:02:23,746 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419608934]
[2022-11-02 21:02:23,746 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:02:23,747 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:02:24,062 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:02:27,889 INFO  L134       CoverageAnalysis]: Checked inductivity of 107 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked.
[2022-11-02 21:02:27,889 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:02:27,889 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419608934]
[2022-11-02 21:02:27,890 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419608934] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:02:27,890 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:02:27,891 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 21:02:27,891 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335702202]
[2022-11-02 21:02:27,891 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:02:27,893 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 21:02:27,894 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:02:27,894 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 21:02:27,895 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-11-02 21:02:27,896 INFO  L87              Difference]: Start difference. First operand 15932 states and 22836 transitions. Second operand  has 4 states, 4 states have (on average 426.0) internal successors, (1704), 3 states have internal predecessors, (1704), 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)
[2022-11-02 21:02:40,756 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:02:40,756 INFO  L93              Difference]: Finished difference Result 52265 states and 74655 transitions.
[2022-11-02 21:02:40,757 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-02 21:02:40,757 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 426.0) internal successors, (1704), 3 states have internal predecessors, (1704), 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 1731
[2022-11-02 21:02:40,758 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:02:40,846 INFO  L225             Difference]: With dead ends: 52265
[2022-11-02 21:02:40,846 INFO  L226             Difference]: Without dead ends: 36335
[2022-11-02 21:02:40,868 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-11-02 21:02:40,870 INFO  L413           NwaCegarLoop]: 1597 mSDtfsCounter, 4247 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 8837 mSolverCounterSat, 3379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4247 SdHoareTripleChecker+Valid, 1946 SdHoareTripleChecker+Invalid, 12216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3379 IncrementalHoareTripleChecker+Valid, 8837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time
[2022-11-02 21:02:40,871 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4247 Valid, 1946 Invalid, 12216 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3379 Valid, 8837 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time]
[2022-11-02 21:02:40,912 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36335 states.
[2022-11-02 21:02:41,429 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36335 to 36324.
[2022-11-02 21:02:41,475 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 36324 states, 36323 states have (on average 1.280703686369518) internal successors, (46519), 36323 states have internal predecessors, (46519), 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)
[2022-11-02 21:02:41,538 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36324 states to 36324 states and 46519 transitions.
[2022-11-02 21:02:41,538 INFO  L78                 Accepts]: Start accepts. Automaton has 36324 states and 46519 transitions. Word has length 1731
[2022-11-02 21:02:41,539 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:02:41,539 INFO  L495      AbstractCegarLoop]: Abstraction has 36324 states and 46519 transitions.
[2022-11-02 21:02:41,540 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 426.0) internal successors, (1704), 3 states have internal predecessors, (1704), 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)
[2022-11-02 21:02:41,542 INFO  L276                IsEmpty]: Start isEmpty. Operand 36324 states and 46519 transitions.
[2022-11-02 21:02:41,649 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1761
[2022-11-02 21:02:41,649 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 21:02:41,650 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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]
[2022-11-02 21:02:41,651 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-11-02 21:02:41,651 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:02:41,652 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:02:41,653 INFO  L85        PathProgramCache]: Analyzing trace with hash 1770161709, now seen corresponding path program 1 times
[2022-11-02 21:02:41,653 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:02:41,653 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598563656]
[2022-11-02 21:02:41,654 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:02:41,654 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:02:42,115 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:02:43,295 INFO  L134       CoverageAnalysis]: Checked inductivity of 163 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked.
[2022-11-02 21:02:43,296 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:02:43,297 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598563656]
[2022-11-02 21:02:43,297 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598563656] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:02:43,297 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:02:43,298 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-02 21:02:43,298 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385282023]
[2022-11-02 21:02:43,298 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:02:43,300 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 21:02:43,301 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:02:43,301 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 21:02:43,302 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:02:43,303 INFO  L87              Difference]: Start difference. First operand 36324 states and 46519 transitions. Second operand  has 3 states, 3 states have (on average 573.0) internal successors, (1719), 2 states have internal predecessors, (1719), 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)
[2022-11-02 21:02:52,290 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:02:52,291 INFO  L93              Difference]: Finished difference Result 91362 states and 116418 transitions.
[2022-11-02 21:02:52,291 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-02 21:02:52,292 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 573.0) internal successors, (1719), 2 states have internal predecessors, (1719), 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 1760
[2022-11-02 21:02:52,292 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:02:52,394 INFO  L225             Difference]: With dead ends: 91362
[2022-11-02 21:02:52,394 INFO  L226             Difference]: Without dead ends: 55040
[2022-11-02 21:02:52,425 INFO  L412           NwaCegarLoop]: 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
[2022-11-02 21:02:52,426 INFO  L413           NwaCegarLoop]: 2017 mSDtfsCounter, 1968 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 5082 mSolverCounterSat, 2030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1968 SdHoareTripleChecker+Valid, 2166 SdHoareTripleChecker+Invalid, 7112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2030 IncrementalHoareTripleChecker+Valid, 5082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time
[2022-11-02 21:02:52,427 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1968 Valid, 2166 Invalid, 7112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2030 Valid, 5082 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time]
[2022-11-02 21:02:52,475 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55040 states.
[2022-11-02 21:02:53,335 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55040 to 55021.
[2022-11-02 21:02:53,391 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 55021 states, 55020 states have (on average 1.2046528535078154) internal successors, (66280), 55020 states have internal predecessors, (66280), 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)
[2022-11-02 21:02:53,493 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 55021 states to 55021 states and 66280 transitions.
[2022-11-02 21:02:53,494 INFO  L78                 Accepts]: Start accepts. Automaton has 55021 states and 66280 transitions. Word has length 1760
[2022-11-02 21:02:53,494 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:02:53,496 INFO  L495      AbstractCegarLoop]: Abstraction has 55021 states and 66280 transitions.
[2022-11-02 21:02:53,501 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 573.0) internal successors, (1719), 2 states have internal predecessors, (1719), 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)
[2022-11-02 21:02:53,502 INFO  L276                IsEmpty]: Start isEmpty. Operand 55021 states and 66280 transitions.
[2022-11-02 21:02:53,605 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1779
[2022-11-02 21:02:53,605 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 21:02:53,607 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:02:53,607 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-11-02 21:02:53,608 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:02:53,608 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:02:53,609 INFO  L85        PathProgramCache]: Analyzing trace with hash 1264691225, now seen corresponding path program 1 times
[2022-11-02 21:02:53,611 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:02:53,612 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941932499]
[2022-11-02 21:02:53,612 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:02:53,613 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:02:53,940 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:02:55,538 INFO  L134       CoverageAnalysis]: Checked inductivity of 222 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked.
[2022-11-02 21:02:55,539 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:02:55,539 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941932499]
[2022-11-02 21:02:55,540 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941932499] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:02:55,540 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:02:55,541 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-02 21:02:55,541 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135280249]
[2022-11-02 21:02:55,541 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:02:55,545 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 21:02:55,545 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:02:55,546 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 21:02:55,546 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:02:55,547 INFO  L87              Difference]: Start difference. First operand 55021 states and 66280 transitions. Second operand  has 3 states, 3 states have (on average 574.6666666666666) internal successors, (1724), 2 states have internal predecessors, (1724), 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)
[2022-11-02 21:03:03,819 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:03:03,819 INFO  L93              Difference]: Finished difference Result 137204 states and 163210 transitions.
[2022-11-02 21:03:03,820 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-02 21:03:03,821 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 574.6666666666666) internal successors, (1724), 2 states have internal predecessors, (1724), 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 1778
[2022-11-02 21:03:03,821 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:03:03,959 INFO  L225             Difference]: With dead ends: 137204
[2022-11-02 21:03:03,959 INFO  L226             Difference]: Without dead ends: 82185
[2022-11-02 21:03:03,988 INFO  L412           NwaCegarLoop]: 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
[2022-11-02 21:03:03,991 INFO  L413           NwaCegarLoop]: 1069 mSDtfsCounter, 3154 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4772 mSolverCounterSat, 1206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3154 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 5978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1206 IncrementalHoareTripleChecker+Valid, 4772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time
[2022-11-02 21:03:03,995 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3154 Valid, 1152 Invalid, 5978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1206 Valid, 4772 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time]
[2022-11-02 21:03:04,086 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 82185 states.
[2022-11-02 21:03:05,213 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 82185 to 82185.
[2022-11-02 21:03:05,281 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 82185 states, 82184 states have (on average 1.1312177552808333) internal successors, (92968), 82184 states have internal predecessors, (92968), 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)
[2022-11-02 21:03:05,378 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 82185 states to 82185 states and 92968 transitions.
[2022-11-02 21:03:05,378 INFO  L78                 Accepts]: Start accepts. Automaton has 82185 states and 92968 transitions. Word has length 1778
[2022-11-02 21:03:05,379 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:03:05,379 INFO  L495      AbstractCegarLoop]: Abstraction has 82185 states and 92968 transitions.
[2022-11-02 21:03:05,379 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 574.6666666666666) internal successors, (1724), 2 states have internal predecessors, (1724), 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)
[2022-11-02 21:03:05,380 INFO  L276                IsEmpty]: Start isEmpty. Operand 82185 states and 92968 transitions.
[2022-11-02 21:03:05,497 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1893
[2022-11-02 21:03:05,497 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 21:03:05,499 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:03:05,499 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-11-02 21:03:05,499 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:03:05,500 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:03:05,501 INFO  L85        PathProgramCache]: Analyzing trace with hash 1491266519, now seen corresponding path program 1 times
[2022-11-02 21:03:05,501 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:03:05,501 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922940362]
[2022-11-02 21:03:05,502 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:03:05,502 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:03:06,293 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:03:09,386 INFO  L134       CoverageAnalysis]: Checked inductivity of 326 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:03:09,387 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:03:09,387 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922940362]
[2022-11-02 21:03:09,387 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922940362] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:03:09,388 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:03:09,388 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 21:03:09,388 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483168581]
[2022-11-02 21:03:09,388 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:03:09,391 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 21:03:09,391 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:03:09,391 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 21:03:09,391 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:03:09,392 INFO  L87              Difference]: Start difference. First operand 82185 states and 92968 transitions. Second operand  has 3 states, 3 states have (on average 630.6666666666666) internal successors, (1892), 3 states have internal predecessors, (1892), 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)
[2022-11-02 21:03:19,053 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:03:19,053 INFO  L93              Difference]: Finished difference Result 193334 states and 221735 transitions.
[2022-11-02 21:03:19,053 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-02 21:03:19,054 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 630.6666666666666) internal successors, (1892), 3 states have internal predecessors, (1892), 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 1892
[2022-11-02 21:03:19,054 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:03:19,198 INFO  L225             Difference]: With dead ends: 193334
[2022-11-02 21:03:19,198 INFO  L226             Difference]: Without dead ends: 111151
[2022-11-02 21:03:19,231 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:03:19,233 INFO  L413           NwaCegarLoop]: 3742 mSDtfsCounter, 1763 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 6093 mSolverCounterSat, 1267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1763 SdHoareTripleChecker+Valid, 3969 SdHoareTripleChecker+Invalid, 7360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1267 IncrementalHoareTripleChecker+Valid, 6093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time
[2022-11-02 21:03:19,233 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1763 Valid, 3969 Invalid, 7360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1267 Valid, 6093 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time]
[2022-11-02 21:03:19,358 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 111151 states.
[2022-11-02 21:03:20,807 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 111151 to 111065.
[2022-11-02 21:03:20,900 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 111065 states, 111064 states have (on average 1.1191475185478643) internal successors, (124297), 111064 states have internal predecessors, (124297), 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)
[2022-11-02 21:03:21,055 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 111065 states to 111065 states and 124297 transitions.
[2022-11-02 21:03:21,056 INFO  L78                 Accepts]: Start accepts. Automaton has 111065 states and 124297 transitions. Word has length 1892
[2022-11-02 21:03:21,056 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:03:21,056 INFO  L495      AbstractCegarLoop]: Abstraction has 111065 states and 124297 transitions.
[2022-11-02 21:03:21,057 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 630.6666666666666) internal successors, (1892), 3 states have internal predecessors, (1892), 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)
[2022-11-02 21:03:21,057 INFO  L276                IsEmpty]: Start isEmpty. Operand 111065 states and 124297 transitions.
[2022-11-02 21:03:21,529 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2121
[2022-11-02 21:03:21,529 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 21:03:21,530 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2022-11-02 21:03:21,531 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-11-02 21:03:21,531 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:03:21,531 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:03:21,532 INFO  L85        PathProgramCache]: Analyzing trace with hash -1931444362, now seen corresponding path program 1 times
[2022-11-02 21:03:21,532 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:03:21,532 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565711842]
[2022-11-02 21:03:21,533 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:03:21,533 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:03:22,120 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:03:24,233 INFO  L134       CoverageAnalysis]: Checked inductivity of 771 backedges. 661 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked.
[2022-11-02 21:03:24,234 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:03:24,234 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565711842]
[2022-11-02 21:03:24,234 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565711842] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:03:24,235 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:03:24,235 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 21:03:24,235 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850173024]
[2022-11-02 21:03:24,236 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:03:24,238 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 21:03:24,239 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:03:24,239 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 21:03:24,240 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:03:24,240 INFO  L87              Difference]: Start difference. First operand 111065 states and 124297 transitions. Second operand  has 3 states, 3 states have (on average 670.3333333333334) internal successors, (2011), 3 states have internal predecessors, (2011), 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)
[2022-11-02 21:03:34,284 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:03:34,284 INFO  L93              Difference]: Finished difference Result 249317 states and 280502 transitions.
[2022-11-02 21:03:34,285 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-02 21:03:34,285 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 670.3333333333334) internal successors, (2011), 3 states have internal predecessors, (2011), 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 2120
[2022-11-02 21:03:34,286 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:03:34,679 INFO  L225             Difference]: With dead ends: 249317
[2022-11-02 21:03:34,680 INFO  L226             Difference]: Without dead ends: 138254
[2022-11-02 21:03:34,717 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:03:34,718 INFO  L413           NwaCegarLoop]: 3820 mSDtfsCounter, 1588 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 5695 mSolverCounterSat, 1243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 4086 SdHoareTripleChecker+Invalid, 6938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1243 IncrementalHoareTripleChecker+Valid, 5695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time
[2022-11-02 21:03:34,719 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 4086 Invalid, 6938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1243 Valid, 5695 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time]
[2022-11-02 21:03:34,843 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 138254 states.
[2022-11-02 21:03:36,491 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 138254 to 138233.
[2022-11-02 21:03:36,578 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 138233 states, 138232 states have (on average 1.1026607442560334) internal successors, (152423), 138232 states have internal predecessors, (152423), 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)
[2022-11-02 21:03:36,811 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 138233 states to 138233 states and 152423 transitions.
[2022-11-02 21:03:36,811 INFO  L78                 Accepts]: Start accepts. Automaton has 138233 states and 152423 transitions. Word has length 2120
[2022-11-02 21:03:36,812 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:03:36,812 INFO  L495      AbstractCegarLoop]: Abstraction has 138233 states and 152423 transitions.
[2022-11-02 21:03:36,813 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 670.3333333333334) internal successors, (2011), 3 states have internal predecessors, (2011), 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)
[2022-11-02 21:03:36,813 INFO  L276                IsEmpty]: Start isEmpty. Operand 138233 states and 152423 transitions.
[2022-11-02 21:03:36,974 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2157
[2022-11-02 21:03:36,974 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 21:03:36,975 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2022-11-02 21:03:36,975 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-11-02 21:03:36,975 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:03:36,975 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:03:36,976 INFO  L85        PathProgramCache]: Analyzing trace with hash -1583547937, now seen corresponding path program 1 times
[2022-11-02 21:03:36,976 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:03:36,976 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211148572]
[2022-11-02 21:03:36,977 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:03:36,977 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:03:37,680 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:03:39,826 INFO  L134       CoverageAnalysis]: Checked inductivity of 914 backedges. 769 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked.
[2022-11-02 21:03:39,826 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:03:39,827 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211148572]
[2022-11-02 21:03:39,827 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211148572] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:03:39,827 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:03:39,828 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 21:03:39,828 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716086142]
[2022-11-02 21:03:39,828 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:03:39,832 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 21:03:39,832 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:03:39,833 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 21:03:39,833 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:03:39,834 INFO  L87              Difference]: Start difference. First operand 138233 states and 152423 transitions. Second operand  has 3 states, 3 states have (on average 671.0) internal successors, (2013), 3 states have internal predecessors, (2013), 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)
[2022-11-02 21:03:50,220 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:03:50,220 INFO  L93              Difference]: Finished difference Result 359651 states and 399026 transitions.
[2022-11-02 21:03:50,221 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-02 21:03:50,221 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 671.0) internal successors, (2013), 3 states have internal predecessors, (2013), 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 2156
[2022-11-02 21:03:50,222 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:03:50,525 INFO  L225             Difference]: With dead ends: 359651
[2022-11-02 21:03:50,525 INFO  L226             Difference]: Without dead ends: 221420
[2022-11-02 21:03:50,583 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:03:50,584 INFO  L413           NwaCegarLoop]: 3357 mSDtfsCounter, 2049 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4903 mSolverCounterSat, 2225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2049 SdHoareTripleChecker+Valid, 3466 SdHoareTripleChecker+Invalid, 7128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2225 IncrementalHoareTripleChecker+Valid, 4903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time
[2022-11-02 21:03:50,584 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2049 Valid, 3466 Invalid, 7128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2225 Valid, 4903 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time]
[2022-11-02 21:03:50,808 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 221420 states.
[2022-11-02 21:03:53,087 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 221420 to 221411.
[2022-11-02 21:03:53,642 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 221411 states, 221410 states have (on average 1.0951718531231651) internal successors, (242482), 221410 states have internal predecessors, (242482), 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)
[2022-11-02 21:03:54,232 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 221411 states to 221411 states and 242482 transitions.
[2022-11-02 21:03:54,232 INFO  L78                 Accepts]: Start accepts. Automaton has 221411 states and 242482 transitions. Word has length 2156
[2022-11-02 21:03:54,234 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:03:54,234 INFO  L495      AbstractCegarLoop]: Abstraction has 221411 states and 242482 transitions.
[2022-11-02 21:03:54,234 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 671.0) internal successors, (2013), 3 states have internal predecessors, (2013), 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)
[2022-11-02 21:03:54,235 INFO  L276                IsEmpty]: Start isEmpty. Operand 221411 states and 242482 transitions.
[2022-11-02 21:03:54,497 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2163
[2022-11-02 21:03:54,497 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 21:03:54,499 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2022-11-02 21:03:54,499 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-11-02 21:03:54,499 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:03:54,499 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:03:54,500 INFO  L85        PathProgramCache]: Analyzing trace with hash -424307895, now seen corresponding path program 1 times
[2022-11-02 21:03:54,500 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:03:54,500 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517898210]
[2022-11-02 21:03:54,501 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:03:54,501 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:03:55,437 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:03:57,113 INFO  L134       CoverageAnalysis]: Checked inductivity of 920 backedges. 741 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked.
[2022-11-02 21:03:57,113 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:03:57,113 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517898210]
[2022-11-02 21:03:57,113 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517898210] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:03:57,114 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:03:57,114 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 21:03:57,114 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988016748]
[2022-11-02 21:03:57,115 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:03:57,117 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 21:03:57,118 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:03:57,118 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 21:03:57,118 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:03:57,119 INFO  L87              Difference]: Start difference. First operand 221411 states and 242482 transitions. Second operand  has 3 states, 3 states have (on average 673.3333333333334) internal successors, (2020), 3 states have internal predecessors, (2020), 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)
[2022-11-02 21:04:05,538 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:04:05,539 INFO  L93              Difference]: Finished difference Result 441027 states and 482966 transitions.
[2022-11-02 21:04:05,540 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-02 21:04:05,540 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 673.3333333333334) internal successors, (2020), 3 states have internal predecessors, (2020), 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 2162
[2022-11-02 21:04:05,540 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:04:05,809 INFO  L225             Difference]: With dead ends: 441027
[2022-11-02 21:04:05,809 INFO  L226             Difference]: Without dead ends: 212795
[2022-11-02 21:04:05,892 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:04:05,893 INFO  L413           NwaCegarLoop]: 1480 mSDtfsCounter, 2554 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4456 mSolverCounterSat, 1695 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2554 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 6151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1695 IncrementalHoareTripleChecker+Valid, 4456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time
[2022-11-02 21:04:05,894 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2554 Valid, 1615 Invalid, 6151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1695 Valid, 4456 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time]
[2022-11-02 21:04:06,054 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 212795 states.
[2022-11-02 21:04:08,335 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 212795 to 190709.
[2022-11-02 21:04:08,458 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 190709 states, 190708 states have (on average 1.0654823080311262) internal successors, (203196), 190708 states have internal predecessors, (203196), 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)
[2022-11-02 21:04:09,211 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 190709 states to 190709 states and 203196 transitions.
[2022-11-02 21:04:09,212 INFO  L78                 Accepts]: Start accepts. Automaton has 190709 states and 203196 transitions. Word has length 2162
[2022-11-02 21:04:09,212 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:04:09,212 INFO  L495      AbstractCegarLoop]: Abstraction has 190709 states and 203196 transitions.
[2022-11-02 21:04:09,213 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 673.3333333333334) internal successors, (2020), 3 states have internal predecessors, (2020), 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)
[2022-11-02 21:04:09,213 INFO  L276                IsEmpty]: Start isEmpty. Operand 190709 states and 203196 transitions.
[2022-11-02 21:04:09,434 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2233
[2022-11-02 21:04:09,435 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 21:04:09,436 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:04:09,436 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-11-02 21:04:09,436 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:04:09,437 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:04:09,437 INFO  L85        PathProgramCache]: Analyzing trace with hash 275371741, now seen corresponding path program 1 times
[2022-11-02 21:04:09,438 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:04:09,438 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232056607]
[2022-11-02 21:04:09,438 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:04:09,439 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:04:09,752 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:04:11,935 INFO  L134       CoverageAnalysis]: Checked inductivity of 1115 backedges. 778 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked.
[2022-11-02 21:04:11,935 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:04:11,935 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232056607]
[2022-11-02 21:04:11,935 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232056607] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:04:11,935 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:04:11,936 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 21:04:11,936 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070332324]
[2022-11-02 21:04:11,936 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:04:11,939 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 21:04:11,939 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:04:11,940 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 21:04:11,940 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:04:11,941 INFO  L87              Difference]: Start difference. First operand 190709 states and 203196 transitions. Second operand  has 3 states, 3 states have (on average 644.3333333333334) internal successors, (1933), 3 states have internal predecessors, (1933), 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)