./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_TicTacToe.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 5e519f3a
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0368c8-27f9-4b88-ac0b-2e8b70f1f886/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0368c8-27f9-4b88-ac0b-2e8b70f1f886/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_6e0368c8-27f9-4b88-ac0b-2e8b70f1f886/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0368c8-27f9-4b88-ac0b-2e8b70f1f886/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_TicTacToe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0368c8-27f9-4b88-ac0b-2e8b70f1f886/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0368c8-27f9-4b88-ac0b-2e8b70f1f886/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 64bit --witnessprinter.graph.data.programhash c11aee76a48e49509d4b12cdc7cb81b5cac70eafd5ac97e618ad22000e7d18c4
--- 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 20:58:44,892 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-11-02 20:58:44,895 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-02 20:58:44,948 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-02 20:58:44,948 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-02 20:58:44,953 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-02 20:58:44,955 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-02 20:58:44,958 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-02 20:58:44,960 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-02 20:58:44,966 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-02 20:58:44,967 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-11-02 20:58:44,969 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-02 20:58:44,970 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-02 20:58:44,973 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-02 20:58:44,975 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-02 20:58:44,976 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-02 20:58:44,978 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-02 20:58:44,979 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-02 20:58:44,981 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-02 20:58:44,984 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-02 20:58:44,985 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-02 20:58:44,988 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-02 20:58:44,992 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-11-02 20:58:44,993 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-02 20:58:45,003 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-02 20:58:45,003 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-02 20:58:45,003 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-02 20:58:45,005 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-02 20:58:45,006 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-02 20:58:45,007 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-02 20:58:45,008 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-02 20:58:45,009 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-02 20:58:45,011 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-02 20:58:45,013 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-02 20:58:45,014 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-02 20:58:45,014 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-02 20:58:45,015 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-02 20:58:45,015 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-02 20:58:45,015 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-02 20:58:45,016 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-02 20:58:45,017 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-11-02 20:58:45,018 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0368c8-27f9-4b88-ac0b-2e8b70f1f886/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf
[2022-11-02 20:58:45,055 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-11-02 20:58:45,056 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-02 20:58:45,056 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-02 20:58:45,056 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-02 20:58:45,057 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-02 20:58:45,058 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-02 20:58:45,058 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-02 20:58:45,058 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-11-02 20:58:45,059 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-11-02 20:58:45,059 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-02 20:58:45,060 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-11-02 20:58:45,060 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-11-02 20:58:45,060 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-11-02 20:58:45,060 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-02 20:58:45,061 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-11-02 20:58:45,061 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-11-02 20:58:45,061 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-11-02 20:58:45,061 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-11-02 20:58:45,061 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-02 20:58:45,062 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-11-02 20:58:45,062 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-11-02 20:58:45,062 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 20:58:45,062 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-02 20:58:45,062 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-11-02 20:58:45,063 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-02 20:58:45,063 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-11-02 20:58:45,064 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-02 20:58:45,065 INFO  L138        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2022-11-02 20:58:45,065 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-02 20:58:45,065 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-02 20:58:45,065 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_6e0368c8-27f9-4b88-ac0b-2e8b70f1f886/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_6e0368c8-27f9-4b88-ac0b-2e8b70f1f886/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 -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c11aee76a48e49509d4b12cdc7cb81b5cac70eafd5ac97e618ad22000e7d18c4
[2022-11-02 20:58:45,371 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-02 20:58:45,391 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-02 20:58:45,394 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-02 20:58:45,395 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-11-02 20:58:45,396 INFO  L275        PluginConnector]: CDTParser initialized
[2022-11-02 20:58:45,397 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0368c8-27f9-4b88-ac0b-2e8b70f1f886/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_TicTacToe.c
[2022-11-02 20:58:45,485 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0368c8-27f9-4b88-ac0b-2e8b70f1f886/bin/uautomizer-Dbtcem3rbc/data/cad4dcd5b/398dd5402efc41ae88354a4262432e02/FLAGd78686ec0
[2022-11-02 20:58:46,243 INFO  L306              CDTParser]: Found 1 translation units.
[2022-11-02 20:58:46,244 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0368c8-27f9-4b88-ac0b-2e8b70f1f886/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_TicTacToe.c
[2022-11-02 20:58:46,279 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0368c8-27f9-4b88-ac0b-2e8b70f1f886/bin/uautomizer-Dbtcem3rbc/data/cad4dcd5b/398dd5402efc41ae88354a4262432e02/FLAGd78686ec0
[2022-11-02 20:58:46,337 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0368c8-27f9-4b88-ac0b-2e8b70f1f886/bin/uautomizer-Dbtcem3rbc/data/cad4dcd5b/398dd5402efc41ae88354a4262432e02
[2022-11-02 20:58:46,341 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-02 20:58:46,344 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-02 20:58:46,348 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-02 20:58:46,348 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-02 20:58:46,352 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-02 20:58:46,353 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:58:46" (1/1) ...
[2022-11-02 20:58:46,355 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e56e140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:46, skipping insertion in model container
[2022-11-02 20:58:46,356 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:58:46" (1/1) ...
[2022-11-02 20:58:46,363 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-11-02 20:58:46,504 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-11-02 20:58:46,795 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_6e0368c8-27f9-4b88-ac0b-2e8b70f1f886/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_TicTacToe.c[1107,1120]
[2022-11-02 20:58:47,433 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-02 20:58:47,437 INFO  L203         MainTranslator]: Completed pre-run
[2022-11-02 20:58:47,449 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_6e0368c8-27f9-4b88-ac0b-2e8b70f1f886/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_TicTacToe.c[1107,1120]
[2022-11-02 20:58:47,815 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-02 20:58:47,828 INFO  L208         MainTranslator]: Completed translation
[2022-11-02 20:58:47,828 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:47 WrapperNode
[2022-11-02 20:58:47,829 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-02 20:58:47,830 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-02 20:58:47,830 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-02 20:58:47,830 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-02 20:58:47,838 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:47" (1/1) ...
[2022-11-02 20:58:47,951 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:47" (1/1) ...
[2022-11-02 20:58:48,406 INFO  L138                Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 10411
[2022-11-02 20:58:48,407 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-02 20:58:48,407 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-02 20:58:48,407 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-02 20:58:48,408 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-11-02 20:58:48,417 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:47" (1/1) ...
[2022-11-02 20:58:48,417 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:47" (1/1) ...
[2022-11-02 20:58:48,538 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:47" (1/1) ...
[2022-11-02 20:58:48,540 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:47" (1/1) ...
[2022-11-02 20:58:48,726 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:47" (1/1) ...
[2022-11-02 20:58:48,766 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:47" (1/1) ...
[2022-11-02 20:58:48,801 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:47" (1/1) ...
[2022-11-02 20:58:48,824 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:47" (1/1) ...
[2022-11-02 20:58:48,879 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-02 20:58:48,881 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-02 20:58:48,881 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-11-02 20:58:48,881 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-11-02 20:58:48,882 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:47" (1/1) ...
[2022-11-02 20:58:48,889 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 20:58:48,900 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0368c8-27f9-4b88-ac0b-2e8b70f1f886/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:58:48,914 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0368c8-27f9-4b88-ac0b-2e8b70f1f886/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-02 20:58:48,929 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0368c8-27f9-4b88-ac0b-2e8b70f1f886/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-02 20:58:48,961 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-02 20:58:48,961 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-02 20:58:50,187 INFO  L235             CfgBuilder]: Building ICFG
[2022-11-02 20:58:50,189 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-02 20:58:56,618 INFO  L276             CfgBuilder]: Performing block encoding
[2022-11-02 20:58:56,645 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-02 20:58:56,645 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-11-02 20:58:56,650 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:58:56 BoogieIcfgContainer
[2022-11-02 20:58:56,650 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-02 20:58:56,653 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-02 20:58:56,653 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-11-02 20:58:56,657 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-11-02 20:58:56,657 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:58:46" (1/3) ...
[2022-11-02 20:58:56,658 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7582972f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:58:56, skipping insertion in model container
[2022-11-02 20:58:56,658 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:47" (2/3) ...
[2022-11-02 20:58:56,658 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7582972f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:58:56, skipping insertion in model container
[2022-11-02 20:58:56,658 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:58:56" (3/3) ...
[2022-11-02 20:58:56,660 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_TicTacToe.c
[2022-11-02 20:58:56,681 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-02 20:58:56,681 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-02 20:58:56,798 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 20:58:56,804 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;@1811110c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 20:58:56,804 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-11-02 20:58:56,833 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 2039 states, 2037 states have (on average 1.4997545409916544) internal successors, (3055), 2038 states have internal predecessors, (3055), 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 20:58:57,004 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1686
[2022-11-02 20:58:57,005 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 20:58:57,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:58:57,007 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:58:57,012 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:58:57,014 INFO  L85        PathProgramCache]: Analyzing trace with hash -1255394281, now seen corresponding path program 1 times
[2022-11-02 20:58:57,023 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:58:57,023 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210256350]
[2022-11-02 20:58:57,024 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:58:57,025 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:59:02,393 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:59:06,978 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 20:59:06,979 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:59:06,979 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210256350]
[2022-11-02 20:59:06,980 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210256350] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:59:06,980 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:59:06,981 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 20:59:06,997 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897922472]
[2022-11-02 20:59:06,998 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:59:07,005 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 20:59:07,006 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:59:07,031 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 20:59:07,032 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 20:59:07,039 INFO  L87              Difference]: Start difference. First operand  has 2039 states, 2037 states have (on average 1.4997545409916544) internal successors, (3055), 2038 states have internal predecessors, (3055), 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 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 20:59:08,088 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:59:08,089 INFO  L93              Difference]: Finished difference Result 4119 states and 6177 transitions.
[2022-11-02 20:59:08,092 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-02 20:59:08,094 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 1685
[2022-11-02 20:59:08,094 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:59:08,118 INFO  L225             Difference]: With dead ends: 4119
[2022-11-02 20:59:08,118 INFO  L226             Difference]: Without dead ends: 2082
[2022-11-02 20:59:08,128 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:59:08,131 INFO  L413           NwaCegarLoop]: 2686 mSDtfsCounter, 6045 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6045 SdHoareTripleChecker+Valid, 2752 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2022-11-02 20:59:08,132 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6045 Valid, 2752 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2022-11-02 20:59:08,155 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2082 states.
[2022-11-02 20:59:08,247 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2035.
[2022-11-02 20:59:08,252 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2035 states, 2034 states have (on average 1.4985250737463127) internal successors, (3048), 2034 states have internal predecessors, (3048), 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 20:59:08,259 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 3048 transitions.
[2022-11-02 20:59:08,261 INFO  L78                 Accepts]: Start accepts. Automaton has 2035 states and 3048 transitions. Word has length 1685
[2022-11-02 20:59:08,262 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:59:08,262 INFO  L495      AbstractCegarLoop]: Abstraction has 2035 states and 3048 transitions.
[2022-11-02 20:59:08,263 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 20:59:08,263 INFO  L276                IsEmpty]: Start isEmpty. Operand 2035 states and 3048 transitions.
[2022-11-02 20:59:08,327 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1686
[2022-11-02 20:59:08,328 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 20:59:08,329 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, 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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]
[2022-11-02 20:59:08,329 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-02 20:59:08,329 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:59:08,330 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:59:08,330 INFO  L85        PathProgramCache]: Analyzing trace with hash -1953942695, now seen corresponding path program 1 times
[2022-11-02 20:59:08,331 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:59:08,331 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788026826]
[2022-11-02 20:59:08,331 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:59:08,331 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:59:12,278 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:59:16,458 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 20:59:16,459 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:59:16,459 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788026826]
[2022-11-02 20:59:16,459 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788026826] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:59:16,460 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:59:16,460 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 20:59:16,460 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512336775]
[2022-11-02 20:59:16,461 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:59:16,465 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 20:59:16,465 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:59:16,465 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 20:59:16,466 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 20:59:16,467 INFO  L87              Difference]: Start difference. First operand 2035 states and 3048 transitions. Second operand  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 20:59:17,305 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:59:17,306 INFO  L93              Difference]: Finished difference Result 4147 states and 6211 transitions.
[2022-11-02 20:59:17,306 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-02 20:59:17,307 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 1685
[2022-11-02 20:59:17,308 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:59:17,314 INFO  L225             Difference]: With dead ends: 4147
[2022-11-02 20:59:17,315 INFO  L226             Difference]: Without dead ends: 2114
[2022-11-02 20:59:17,318 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:59:17,324 INFO  L413           NwaCegarLoop]: 2727 mSDtfsCounter, 6011 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6011 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-11-02 20:59:17,325 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6011 Valid, 2835 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2022-11-02 20:59:17,330 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2114 states.
[2022-11-02 20:59:17,370 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 2035.
[2022-11-02 20:59:17,374 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2035 states, 2034 states have (on average 1.4980334316617503) internal successors, (3047), 2034 states have internal predecessors, (3047), 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 20:59:17,384 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 3047 transitions.
[2022-11-02 20:59:17,384 INFO  L78                 Accepts]: Start accepts. Automaton has 2035 states and 3047 transitions. Word has length 1685
[2022-11-02 20:59:17,387 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:59:17,388 INFO  L495      AbstractCegarLoop]: Abstraction has 2035 states and 3047 transitions.
[2022-11-02 20:59:17,389 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 20:59:17,389 INFO  L276                IsEmpty]: Start isEmpty. Operand 2035 states and 3047 transitions.
[2022-11-02 20:59:17,413 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1686
[2022-11-02 20:59:17,414 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 20:59:17,415 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, 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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 20:59:17,416 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-11-02 20:59:17,416 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:59:17,426 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:59:17,426 INFO  L85        PathProgramCache]: Analyzing trace with hash 337885851, now seen corresponding path program 1 times
[2022-11-02 20:59:17,427 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:59:17,427 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352363834]
[2022-11-02 20:59:17,427 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:59:17,428 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:59:20,592 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:59:23,482 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 20:59:23,483 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:59:23,484 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352363834]
[2022-11-02 20:59:23,484 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352363834] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:59:23,485 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:59:23,491 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 20:59:23,491 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777041869]
[2022-11-02 20:59:23,491 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:59:23,494 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 20:59:23,494 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:59:23,495 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 20:59:23,495 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 20:59:23,496 INFO  L87              Difference]: Start difference. First operand 2035 states and 3047 transitions. Second operand  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 20:59:24,485 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:59:24,485 INFO  L93              Difference]: Finished difference Result 4161 states and 6229 transitions.
[2022-11-02 20:59:24,485 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-02 20:59:24,487 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 1685
[2022-11-02 20:59:24,487 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:59:24,494 INFO  L225             Difference]: With dead ends: 4161
[2022-11-02 20:59:24,494 INFO  L226             Difference]: Without dead ends: 2128
[2022-11-02 20:59:24,497 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:59:24,498 INFO  L413           NwaCegarLoop]: 2743 mSDtfsCounter, 5995 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5995 SdHoareTripleChecker+Valid, 2868 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2022-11-02 20:59:24,499 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5995 Valid, 2868 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2022-11-02 20:59:24,503 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2128 states.
[2022-11-02 20:59:24,540 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 2035.
[2022-11-02 20:59:24,545 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2035 states, 2034 states have (on average 1.4975417895771879) internal successors, (3046), 2034 states have internal predecessors, (3046), 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 20:59:24,553 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 3046 transitions.
[2022-11-02 20:59:24,553 INFO  L78                 Accepts]: Start accepts. Automaton has 2035 states and 3046 transitions. Word has length 1685
[2022-11-02 20:59:24,554 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:59:24,554 INFO  L495      AbstractCegarLoop]: Abstraction has 2035 states and 3046 transitions.
[2022-11-02 20:59:24,556 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 20:59:24,556 INFO  L276                IsEmpty]: Start isEmpty. Operand 2035 states and 3046 transitions.
[2022-11-02 20:59:24,600 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1686
[2022-11-02 20:59:24,601 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 20:59:24,602 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, 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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 20:59:24,602 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-11-02 20:59:24,603 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:59:24,603 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:59:24,604 INFO  L85        PathProgramCache]: Analyzing trace with hash -1698480803, now seen corresponding path program 1 times
[2022-11-02 20:59:24,604 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:59:24,605 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383778786]
[2022-11-02 20:59:24,605 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:59:24,605 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:59:27,851 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:59:29,975 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 20:59:29,975 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:59:29,975 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383778786]
[2022-11-02 20:59:29,976 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383778786] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:59:29,976 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:59:29,976 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 20:59:29,976 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385867962]
[2022-11-02 20:59:29,977 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:59:29,979 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 20:59:29,979 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:59:29,979 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 20:59:29,980 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 20:59:29,981 INFO  L87              Difference]: Start difference. First operand 2035 states and 3046 transitions. Second operand  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 20:59:30,871 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:59:30,872 INFO  L93              Difference]: Finished difference Result 4179 states and 6253 transitions.
[2022-11-02 20:59:30,872 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-02 20:59:30,873 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 1685
[2022-11-02 20:59:30,874 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:59:30,880 INFO  L225             Difference]: With dead ends: 4179
[2022-11-02 20:59:30,880 INFO  L226             Difference]: Without dead ends: 2146
[2022-11-02 20:59:30,883 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:59:30,886 INFO  L413           NwaCegarLoop]: 2760 mSDtfsCounter, 5975 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5975 SdHoareTripleChecker+Valid, 2903 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-11-02 20:59:30,888 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5975 Valid, 2903 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-11-02 20:59:30,893 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2146 states.
[2022-11-02 20:59:30,923 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 2035.
[2022-11-02 20:59:30,927 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2035 states, 2034 states have (on average 1.4970501474926254) internal successors, (3045), 2034 states have internal predecessors, (3045), 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 20:59:30,937 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 3045 transitions.
[2022-11-02 20:59:30,937 INFO  L78                 Accepts]: Start accepts. Automaton has 2035 states and 3045 transitions. Word has length 1685
[2022-11-02 20:59:30,938 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:59:30,939 INFO  L495      AbstractCegarLoop]: Abstraction has 2035 states and 3045 transitions.
[2022-11-02 20:59:30,940 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 20:59:30,940 INFO  L276                IsEmpty]: Start isEmpty. Operand 2035 states and 3045 transitions.
[2022-11-02 20:59:30,965 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1686
[2022-11-02 20:59:30,966 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 20:59:30,967 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, 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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 20:59:30,967 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-11-02 20:59:30,970 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:59:30,971 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:59:30,971 INFO  L85        PathProgramCache]: Analyzing trace with hash -306492257, now seen corresponding path program 1 times
[2022-11-02 20:59:30,972 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:59:30,972 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896558883]
[2022-11-02 20:59:30,972 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:59:30,972 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:59:34,563 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:59:36,573 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 20:59:36,574 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:59:36,574 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896558883]
[2022-11-02 20:59:36,574 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896558883] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:59:36,574 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:59:36,575 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 20:59:36,576 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917292907]
[2022-11-02 20:59:36,577 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:59:36,579 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 20:59:36,579 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:59:36,579 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 20:59:36,580 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 20:59:36,581 INFO  L87              Difference]: Start difference. First operand 2035 states and 3045 transitions. Second operand  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 20:59:37,422 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:59:37,423 INFO  L93              Difference]: Finished difference Result 4193 states and 6271 transitions.
[2022-11-02 20:59:37,423 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-02 20:59:37,424 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 1685
[2022-11-02 20:59:37,424 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:59:37,431 INFO  L225             Difference]: With dead ends: 4193
[2022-11-02 20:59:37,431 INFO  L226             Difference]: Without dead ends: 2160
[2022-11-02 20:59:37,435 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:59:37,436 INFO  L413           NwaCegarLoop]: 2776 mSDtfsCounter, 5959 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5959 SdHoareTripleChecker+Valid, 2936 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-11-02 20:59:37,437 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5959 Valid, 2936 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-11-02 20:59:37,442 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2160 states.
[2022-11-02 20:59:37,471 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2160 to 2035.
[2022-11-02 20:59:37,475 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2035 states, 2034 states have (on average 1.496558505408063) internal successors, (3044), 2034 states have internal predecessors, (3044), 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 20:59:37,481 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 3044 transitions.
[2022-11-02 20:59:37,481 INFO  L78                 Accepts]: Start accepts. Automaton has 2035 states and 3044 transitions. Word has length 1685
[2022-11-02 20:59:37,482 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:59:37,482 INFO  L495      AbstractCegarLoop]: Abstraction has 2035 states and 3044 transitions.
[2022-11-02 20:59:37,493 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 20:59:37,500 INFO  L276                IsEmpty]: Start isEmpty. Operand 2035 states and 3044 transitions.
[2022-11-02 20:59:37,523 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1686
[2022-11-02 20:59:37,523 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 20:59:37,524 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:59:37,525 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-11-02 20:59:37,529 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:59:37,530 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:59:37,531 INFO  L85        PathProgramCache]: Analyzing trace with hash -1786357919, now seen corresponding path program 1 times
[2022-11-02 20:59:37,531 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:59:37,531 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336812032]
[2022-11-02 20:59:37,532 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:59:37,532 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:59:41,002 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:59:43,372 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 20:59:43,372 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:59:43,373 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336812032]
[2022-11-02 20:59:43,373 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336812032] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:59:43,373 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:59:43,373 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 20:59:43,374 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295057356]
[2022-11-02 20:59:43,374 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:59:43,376 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 20:59:43,376 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:59:43,376 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 20:59:43,377 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 20:59:43,378 INFO  L87              Difference]: Start difference. First operand 2035 states and 3044 transitions. Second operand  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 20:59:44,149 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:59:44,149 INFO  L93              Difference]: Finished difference Result 4257 states and 6364 transitions.
[2022-11-02 20:59:44,152 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-02 20:59:44,153 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 1685
[2022-11-02 20:59:44,153 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:59:44,160 INFO  L225             Difference]: With dead ends: 4257
[2022-11-02 20:59:44,160 INFO  L226             Difference]: Without dead ends: 2224
[2022-11-02 20:59:44,163 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:59:44,164 INFO  L413           NwaCegarLoop]: 2859 mSDtfsCounter, 5893 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5893 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-11-02 20:59:44,164 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5893 Valid, 3103 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2022-11-02 20:59:44,168 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2224 states.
[2022-11-02 20:59:44,196 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 2035.
[2022-11-02 20:59:44,199 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2035 states, 2034 states have (on average 1.4960668633235006) internal successors, (3043), 2034 states have internal predecessors, (3043), 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 20:59:44,203 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 3043 transitions.
[2022-11-02 20:59:44,204 INFO  L78                 Accepts]: Start accepts. Automaton has 2035 states and 3043 transitions. Word has length 1685
[2022-11-02 20:59:44,204 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:59:44,205 INFO  L495      AbstractCegarLoop]: Abstraction has 2035 states and 3043 transitions.
[2022-11-02 20:59:44,205 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 20:59:44,206 INFO  L276                IsEmpty]: Start isEmpty. Operand 2035 states and 3043 transitions.
[2022-11-02 20:59:44,228 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1686
[2022-11-02 20:59:44,228 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 20:59:44,230 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, 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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]
[2022-11-02 20:59:44,230 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-11-02 20:59:44,230 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:59:44,230 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:59:44,231 INFO  L85        PathProgramCache]: Analyzing trace with hash -267881949, now seen corresponding path program 1 times
[2022-11-02 20:59:44,231 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:59:44,231 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329319840]
[2022-11-02 20:59:44,232 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:59:44,232 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:59:47,066 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:59:49,366 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 20:59:49,367 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:59:49,367 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329319840]
[2022-11-02 20:59:49,367 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329319840] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:59:49,367 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:59:49,368 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 20:59:49,368 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838627751]
[2022-11-02 20:59:49,368 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:59:49,370 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 20:59:49,370 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:59:49,371 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 20:59:49,371 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 20:59:49,372 INFO  L87              Difference]: Start difference. First operand 2035 states and 3043 transitions. Second operand  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 20:59:50,217 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:59:50,217 INFO  L93              Difference]: Finished difference Result 4275 states and 6388 transitions.
[2022-11-02 20:59:50,217 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-02 20:59:50,218 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 1685
[2022-11-02 20:59:50,218 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:59:50,225 INFO  L225             Difference]: With dead ends: 4275
[2022-11-02 20:59:50,225 INFO  L226             Difference]: Without dead ends: 2242
[2022-11-02 20:59:50,233 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:59:50,238 INFO  L413           NwaCegarLoop]: 2875 mSDtfsCounter, 5873 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5873 SdHoareTripleChecker+Valid, 3136 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-11-02 20:59:50,239 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5873 Valid, 3136 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-11-02 20:59:50,246 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2242 states.
[2022-11-02 20:59:50,274 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2035.
[2022-11-02 20:59:50,277 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2035 states, 2034 states have (on average 1.4955752212389382) internal successors, (3042), 2034 states have internal predecessors, (3042), 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 20:59:50,282 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 3042 transitions.
[2022-11-02 20:59:50,282 INFO  L78                 Accepts]: Start accepts. Automaton has 2035 states and 3042 transitions. Word has length 1685
[2022-11-02 20:59:50,283 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:59:50,283 INFO  L495      AbstractCegarLoop]: Abstraction has 2035 states and 3042 transitions.
[2022-11-02 20:59:50,284 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 20:59:50,284 INFO  L276                IsEmpty]: Start isEmpty. Operand 2035 states and 3042 transitions.
[2022-11-02 20:59:50,307 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1686
[2022-11-02 20:59:50,307 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 20:59:50,308 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, 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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 20:59:50,308 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-11-02 20:59:50,309 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:59:50,309 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:59:50,310 INFO  L85        PathProgramCache]: Analyzing trace with hash 853088613, now seen corresponding path program 1 times
[2022-11-02 20:59:50,310 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:59:50,310 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718700934]
[2022-11-02 20:59:50,311 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:59:50,311 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:59:53,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:59:55,004 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 20:59:55,005 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:59:55,005 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718700934]
[2022-11-02 20:59:55,005 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718700934] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:59:55,005 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:59:55,006 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 20:59:55,006 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511184622]
[2022-11-02 20:59:55,006 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:59:55,008 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 20:59:55,008 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:59:55,008 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 20:59:55,009 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 20:59:55,009 INFO  L87              Difference]: Start difference. First operand 2035 states and 3042 transitions. Second operand  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 20:59:55,736 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:59:55,736 INFO  L93              Difference]: Finished difference Result 4289 states and 6406 transitions.
[2022-11-02 20:59:55,736 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-02 20:59:55,737 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 1685
[2022-11-02 20:59:55,737 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:59:55,741 INFO  L225             Difference]: With dead ends: 4289
[2022-11-02 20:59:55,741 INFO  L226             Difference]: Without dead ends: 2256
[2022-11-02 20:59:55,742 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:59:55,744 INFO  L413           NwaCegarLoop]: 2892 mSDtfsCounter, 5857 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5857 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-11-02 20:59:55,744 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5857 Valid, 3171 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2022-11-02 20:59:55,748 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2256 states.
[2022-11-02 20:59:55,771 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2035.
[2022-11-02 20:59:55,774 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2035 states, 2034 states have (on average 1.4950835791543755) internal successors, (3041), 2034 states have internal predecessors, (3041), 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 20:59:55,778 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 3041 transitions.
[2022-11-02 20:59:55,778 INFO  L78                 Accepts]: Start accepts. Automaton has 2035 states and 3041 transitions. Word has length 1685
[2022-11-02 20:59:55,778 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:59:55,779 INFO  L495      AbstractCegarLoop]: Abstraction has 2035 states and 3041 transitions.
[2022-11-02 20:59:55,779 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 20:59:55,780 INFO  L276                IsEmpty]: Start isEmpty. Operand 2035 states and 3041 transitions.
[2022-11-02 20:59:55,802 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1686
[2022-11-02 20:59:55,803 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 20:59:55,804 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, 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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 20:59:55,804 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-11-02 20:59:55,804 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 20:59:55,805 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:59:55,805 INFO  L85        PathProgramCache]: Analyzing trace with hash 518437927, now seen corresponding path program 1 times
[2022-11-02 20:59:55,806 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:59:55,806 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770371232]
[2022-11-02 20:59:55,806 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:59:55,806 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:59:58,380 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:00:00,808 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 21:00:00,808 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:00:00,809 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770371232]
[2022-11-02 21:00:00,809 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770371232] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:00:00,809 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:00:00,809 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 21:00:00,809 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086474592]
[2022-11-02 21:00:00,810 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:00:00,811 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 21:00:00,812 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:00:00,812 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 21:00:00,812 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 21:00:00,813 INFO  L87              Difference]: Start difference. First operand 2035 states and 3041 transitions. Second operand  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 21:00:01,573 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:00:01,573 INFO  L93              Difference]: Finished difference Result 4321 states and 6451 transitions.
[2022-11-02 21:00:01,574 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-02 21:00:01,574 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 1685
[2022-11-02 21:00:01,575 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:00:01,582 INFO  L225             Difference]: With dead ends: 4321
[2022-11-02 21:00:01,583 INFO  L226             Difference]: Without dead ends: 2288
[2022-11-02 21:00:01,585 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 21:00:01,586 INFO  L413           NwaCegarLoop]: 2929 mSDtfsCounter, 5823 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5823 SdHoareTripleChecker+Valid, 3246 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-11-02 21:00:01,586 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5823 Valid, 3246 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2022-11-02 21:00:01,590 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2288 states.
[2022-11-02 21:00:01,611 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2288 to 2035.
[2022-11-02 21:00:01,613 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2035 states, 2034 states have (on average 1.494591937069813) internal successors, (3040), 2034 states have internal predecessors, (3040), 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 21:00:01,617 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 3040 transitions.
[2022-11-02 21:00:01,617 INFO  L78                 Accepts]: Start accepts. Automaton has 2035 states and 3040 transitions. Word has length 1685
[2022-11-02 21:00:01,618 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:00:01,618 INFO  L495      AbstractCegarLoop]: Abstraction has 2035 states and 3040 transitions.
[2022-11-02 21:00:01,619 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 21:00:01,619 INFO  L276                IsEmpty]: Start isEmpty. Operand 2035 states and 3040 transitions.
[2022-11-02 21:00:01,642 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1686
[2022-11-02 21:00:01,642 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 21:00:01,643 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, 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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 21:00:01,643 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-11-02 21:00:01,643 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:00:01,644 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:00:01,645 INFO  L85        PathProgramCache]: Analyzing trace with hash 1822418665, now seen corresponding path program 1 times
[2022-11-02 21:00:01,645 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:00:01,645 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145361840]
[2022-11-02 21:00:01,645 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:00:01,645 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:00:04,312 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:00:06,108 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 21:00:06,108 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:00:06,108 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145361840]
[2022-11-02 21:00:06,108 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145361840] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:00:06,109 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:00:06,109 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 21:00:06,109 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179793508]
[2022-11-02 21:00:06,109 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:00:06,111 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 21:00:06,111 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:00:06,112 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 21:00:06,112 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 21:00:06,113 INFO  L87              Difference]: Start difference. First operand 2035 states and 3040 transitions. Second operand  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 21:00:06,904 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:00:06,905 INFO  L93              Difference]: Finished difference Result 4499 states and 6715 transitions.
[2022-11-02 21:00:06,905 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-02 21:00:06,905 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 1685
[2022-11-02 21:00:06,906 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:00:06,915 INFO  L225             Difference]: With dead ends: 4499
[2022-11-02 21:00:06,916 INFO  L226             Difference]: Without dead ends: 2466
[2022-11-02 21:00:06,918 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 21:00:06,919 INFO  L413           NwaCegarLoop]: 3176 mSDtfsCounter, 5643 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5643 SdHoareTripleChecker+Valid, 3741 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-11-02 21:00:06,920 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5643 Valid, 3741 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2022-11-02 21:00:06,923 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2466 states.
[2022-11-02 21:00:06,949 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2035.
[2022-11-02 21:00:06,952 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2035 states, 2034 states have (on average 1.4941002949852507) internal successors, (3039), 2034 states have internal predecessors, (3039), 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 21:00:06,955 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 3039 transitions.
[2022-11-02 21:00:06,955 INFO  L78                 Accepts]: Start accepts. Automaton has 2035 states and 3039 transitions. Word has length 1685
[2022-11-02 21:00:06,956 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:00:06,957 INFO  L495      AbstractCegarLoop]: Abstraction has 2035 states and 3039 transitions.
[2022-11-02 21:00:06,957 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 21:00:06,958 INFO  L276                IsEmpty]: Start isEmpty. Operand 2035 states and 3039 transitions.
[2022-11-02 21:00:06,980 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1686
[2022-11-02 21:00:06,980 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 21:00:06,981 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:00:06,982 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-11-02 21:00:06,982 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:00:06,982 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:00:06,983 INFO  L85        PathProgramCache]: Analyzing trace with hash -702593493, now seen corresponding path program 1 times
[2022-11-02 21:00:06,983 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:00:06,983 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042771945]
[2022-11-02 21:00:06,984 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:00:06,984 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:00:09,658 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:00:11,809 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 21:00:11,810 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:00:11,810 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042771945]
[2022-11-02 21:00:11,810 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042771945] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:00:11,810 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:00:11,811 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 21:00:11,811 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943306473]
[2022-11-02 21:00:11,811 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:00:11,812 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 21:00:11,813 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:00:11,813 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 21:00:11,813 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 21:00:11,814 INFO  L87              Difference]: Start difference. First operand 2035 states and 3039 transitions. Second operand  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 21:00:12,580 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:00:12,584 INFO  L93              Difference]: Finished difference Result 4513 states and 6733 transitions.
[2022-11-02 21:00:12,586 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-02 21:00:12,587 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 1685
[2022-11-02 21:00:12,588 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:00:12,596 INFO  L225             Difference]: With dead ends: 4513
[2022-11-02 21:00:12,596 INFO  L226             Difference]: Without dead ends: 2480
[2022-11-02 21:00:12,604 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 21:00:12,605 INFO  L413           NwaCegarLoop]: 3192 mSDtfsCounter, 5627 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5627 SdHoareTripleChecker+Valid, 3774 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-11-02 21:00:12,606 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5627 Valid, 3774 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2022-11-02 21:00:12,610 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2480 states.
[2022-11-02 21:00:12,633 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2035.
[2022-11-02 21:00:12,636 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2035 states, 2034 states have (on average 1.4936086529006882) internal successors, (3038), 2034 states have internal predecessors, (3038), 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 21:00:12,639 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 3038 transitions.
[2022-11-02 21:00:12,639 INFO  L78                 Accepts]: Start accepts. Automaton has 2035 states and 3038 transitions. Word has length 1685
[2022-11-02 21:00:12,640 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:00:12,640 INFO  L495      AbstractCegarLoop]: Abstraction has 2035 states and 3038 transitions.
[2022-11-02 21:00:12,641 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 21:00:12,641 INFO  L276                IsEmpty]: Start isEmpty. Operand 2035 states and 3038 transitions.
[2022-11-02 21:00:12,664 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1686
[2022-11-02 21:00:12,664 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 21:00:12,665 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, 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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]
[2022-11-02 21:00:12,665 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2022-11-02 21:00:12,666 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:00:12,666 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:00:12,667 INFO  L85        PathProgramCache]: Analyzing trace with hash -2139250451, now seen corresponding path program 1 times
[2022-11-02 21:00:12,667 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:00:12,667 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248511467]
[2022-11-02 21:00:12,668 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:00:12,668 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:00:15,303 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:00:17,188 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 21:00:17,188 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:00:17,188 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248511467]
[2022-11-02 21:00:17,189 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248511467] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:00:17,189 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:00:17,189 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 21:00:17,189 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722622999]
[2022-11-02 21:00:17,189 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:00:17,191 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 21:00:17,191 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:00:17,192 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 21:00:17,192 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 21:00:17,193 INFO  L87              Difference]: Start difference. First operand 2035 states and 3038 transitions. Second operand  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 21:00:17,989 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:00:17,989 INFO  L93              Difference]: Finished difference Result 4563 states and 6805 transitions.
[2022-11-02 21:00:17,990 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-02 21:00:17,990 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 1685
[2022-11-02 21:00:17,991 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:00:17,996 INFO  L225             Difference]: With dead ends: 4563
[2022-11-02 21:00:17,996 INFO  L226             Difference]: Without dead ends: 2530
[2022-11-02 21:00:17,998 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 21:00:17,999 INFO  L413           NwaCegarLoop]: 3248 mSDtfsCounter, 5575 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5575 SdHoareTripleChecker+Valid, 3887 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-11-02 21:00:17,999 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5575 Valid, 3887 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2022-11-02 21:00:18,003 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2530 states.
[2022-11-02 21:00:18,026 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2035.
[2022-11-02 21:00:18,029 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2035 states, 2034 states have (on average 1.4931170108161258) internal successors, (3037), 2034 states have internal predecessors, (3037), 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 21:00:18,032 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 3037 transitions.
[2022-11-02 21:00:18,032 INFO  L78                 Accepts]: Start accepts. Automaton has 2035 states and 3037 transitions. Word has length 1685
[2022-11-02 21:00:18,033 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:00:18,034 INFO  L495      AbstractCegarLoop]: Abstraction has 2035 states and 3037 transitions.
[2022-11-02 21:00:18,034 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 21:00:18,035 INFO  L276                IsEmpty]: Start isEmpty. Operand 2035 states and 3037 transitions.
[2022-11-02 21:00:18,057 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1686
[2022-11-02 21:00:18,057 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 21:00:18,058 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, 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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 21:00:18,058 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2022-11-02 21:00:18,058 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:00:18,059 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:00:18,060 INFO  L85        PathProgramCache]: Analyzing trace with hash -1449652177, now seen corresponding path program 1 times
[2022-11-02 21:00:18,060 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:00:18,060 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634156552]
[2022-11-02 21:00:18,060 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:00:18,060 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:00:20,627 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:00:23,227 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 21:00:23,227 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:00:23,228 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634156552]
[2022-11-02 21:00:23,228 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634156552] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:00:23,228 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:00:23,228 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 21:00:23,229 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971622085]
[2022-11-02 21:00:23,229 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:00:23,231 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 21:00:23,231 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:00:23,231 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 21:00:23,232 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 21:00:23,232 INFO  L87              Difference]: Start difference. First operand 2035 states and 3037 transitions. Second operand  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 21:00:24,067 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:00:24,067 INFO  L93              Difference]: Finished difference Result 4595 states and 6850 transitions.
[2022-11-02 21:00:24,067 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-02 21:00:24,068 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 1685
[2022-11-02 21:00:24,069 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:00:24,073 INFO  L225             Difference]: With dead ends: 4595
[2022-11-02 21:00:24,073 INFO  L226             Difference]: Without dead ends: 2562
[2022-11-02 21:00:24,076 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 21:00:24,077 INFO  L413           NwaCegarLoop]: 3280 mSDtfsCounter, 5541 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5541 SdHoareTripleChecker+Valid, 3952 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-11-02 21:00:24,077 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5541 Valid, 3952 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-11-02 21:00:24,081 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2562 states.
[2022-11-02 21:00:24,104 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 2035.
[2022-11-02 21:00:24,107 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2035 states, 2034 states have (on average 1.4926253687315634) internal successors, (3036), 2034 states have internal predecessors, (3036), 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 21:00:24,110 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 3036 transitions.
[2022-11-02 21:00:24,110 INFO  L78                 Accepts]: Start accepts. Automaton has 2035 states and 3036 transitions. Word has length 1685
[2022-11-02 21:00:24,111 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:00:24,111 INFO  L495      AbstractCegarLoop]: Abstraction has 2035 states and 3036 transitions.
[2022-11-02 21:00:24,112 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 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 21:00:24,112 INFO  L276                IsEmpty]: Start isEmpty. Operand 2035 states and 3036 transitions.
[2022-11-02 21:00:24,134 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1686
[2022-11-02 21:00:24,134 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-02 21:00:24,135 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, 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[2022-11-02 21:00:24,136 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2022-11-02 21:00:24,136 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:00:24,136 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:00:24,137 INFO  L85        PathProgramCache]: Analyzing trace with hash 1454376817, now seen corresponding path program 1 times
[2022-11-02 21:00:24,137 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:00:24,137 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379271750]
[2022-11-02 21:00:24,138 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:00:24,138 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:00:27,235 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat