./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem05_label37.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 2329fc70
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_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem05_label37.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ad416ca6ed1127b35253a5749b88eafec3d19f1267a835799e82608815f6d9c0
--- 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-2329fc7
[2022-12-13 17:49:21,772 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-12-13 17:49:21,773 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-12-13 17:49:21,789 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-12-13 17:49:21,789 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-12-13 17:49:21,790 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-12-13 17:49:21,791 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-12-13 17:49:21,793 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-12-13 17:49:21,794 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-12-13 17:49:21,795 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-12-13 17:49:21,796 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-12-13 17:49:21,797 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-12-13 17:49:21,797 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-12-13 17:49:21,798 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-12-13 17:49:21,799 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-12-13 17:49:21,800 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-12-13 17:49:21,800 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-12-13 17:49:21,801 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-12-13 17:49:21,803 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-12-13 17:49:21,804 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-12-13 17:49:21,806 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-12-13 17:49:21,807 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-12-13 17:49:21,808 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-12-13 17:49:21,808 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-12-13 17:49:21,812 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-12-13 17:49:21,812 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-12-13 17:49:21,812 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-12-13 17:49:21,813 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-12-13 17:49:21,813 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-12-13 17:49:21,814 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-12-13 17:49:21,814 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-12-13 17:49:21,815 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-12-13 17:49:21,816 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-12-13 17:49:21,816 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-12-13 17:49:21,817 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-12-13 17:49:21,817 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-12-13 17:49:21,818 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-12-13 17:49:21,818 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-12-13 17:49:21,818 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-12-13 17:49:21,819 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-12-13 17:49:21,819 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-12-13 17:49:21,820 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-12-13 17:49:21,841 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-12-13 17:49:21,841 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-12-13 17:49:21,841 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-12-13 17:49:21,842 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-12-13 17:49:21,842 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-12-13 17:49:21,842 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-12-13 17:49:21,843 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-12-13 17:49:21,843 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-12-13 17:49:21,843 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-12-13 17:49:21,844 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-12-13 17:49:21,844 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-12-13 17:49:21,844 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-12-13 17:49:21,844 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-12-13 17:49:21,844 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-12-13 17:49:21,844 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-12-13 17:49:21,844 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-12-13 17:49:21,845 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-12-13 17:49:21,845 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-12-13 17:49:21,845 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-12-13 17:49:21,845 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-12-13 17:49:21,845 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-12-13 17:49:21,845 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-12-13 17:49:21,846 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-12-13 17:49:21,846 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-12-13 17:49:21,846 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-13 17:49:21,846 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-12-13 17:49:21,846 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-12-13 17:49:21,846 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-12-13 17:49:21,847 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-12-13 17:49:21,847 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-12-13 17:49:21,847 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-12-13 17:49:21,847 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-12-13 17:49:21,847 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2022-12-13 17:49:21,847 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-12-13 17:49:21,847 INFO  L138        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2022-12-13 17:49:21,848 INFO  L138        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
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_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/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_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad416ca6ed1127b35253a5749b88eafec3d19f1267a835799e82608815f6d9c0
[2022-12-13 17:49:22,041 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-12-13 17:49:22,060 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-12-13 17:49:22,062 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-12-13 17:49:22,063 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-12-13 17:49:22,063 INFO  L275        PluginConnector]: CDTParser initialized
[2022-12-13 17:49:22,064 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/eca-rers2012/Problem05_label37.c
[2022-12-13 17:49:24,568 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-12-13 17:49:24,956 INFO  L351              CDTParser]: Found 1 translation units.
[2022-12-13 17:49:24,956 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/sv-benchmarks/c/eca-rers2012/Problem05_label37.c
[2022-12-13 17:49:24,986 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/data/4ba5aacf1/1217e1352d024083bc9f13bf710e4dd4/FLAGa49dfddd2
[2022-12-13 17:49:25,140 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/data/4ba5aacf1/1217e1352d024083bc9f13bf710e4dd4
[2022-12-13 17:49:25,143 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-12-13 17:49:25,144 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-12-13 17:49:25,146 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-12-13 17:49:25,146 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-12-13 17:49:25,150 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-12-13 17:49:25,150 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:49:25" (1/1) ...
[2022-12-13 17:49:25,151 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59df1daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:25, skipping insertion in model container
[2022-12-13 17:49:25,151 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:49:25" (1/1) ...
[2022-12-13 17:49:25,158 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-12-13 17:49:25,377 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-12-13 17:49:26,661 WARN  L237   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_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/sv-benchmarks/c/eca-rers2012/Problem05_label37.c[376044,376057]
[2022-12-13 17:49:26,678 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-13 17:49:26,686 INFO  L203         MainTranslator]: Completed pre-run
[2022-12-13 17:49:27,513 WARN  L237   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_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/sv-benchmarks/c/eca-rers2012/Problem05_label37.c[376044,376057]
[2022-12-13 17:49:27,519 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-13 17:49:27,547 INFO  L208         MainTranslator]: Completed translation
[2022-12-13 17:49:27,548 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:27 WrapperNode
[2022-12-13 17:49:27,548 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-12-13 17:49:27,548 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-12-13 17:49:27,548 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-12-13 17:49:27,548 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-12-13 17:49:27,554 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:27" (1/1) ...
[2022-12-13 17:49:27,620 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:27" (1/1) ...
[2022-12-13 17:49:27,893 INFO  L138                Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 12346
[2022-12-13 17:49:27,894 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-12-13 17:49:27,894 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-12-13 17:49:27,894 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-12-13 17:49:27,894 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-12-13 17:49:27,904 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:27" (1/1) ...
[2022-12-13 17:49:27,904 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:27" (1/1) ...
[2022-12-13 17:49:27,969 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:27" (1/1) ...
[2022-12-13 17:49:27,969 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:27" (1/1) ...
[2022-12-13 17:49:28,085 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:27" (1/1) ...
[2022-12-13 17:49:28,144 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:27" (1/1) ...
[2022-12-13 17:49:28,156 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:27" (1/1) ...
[2022-12-13 17:49:28,166 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:27" (1/1) ...
[2022-12-13 17:49:28,221 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-12-13 17:49:28,222 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-12-13 17:49:28,222 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-12-13 17:49:28,222 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-12-13 17:49:28,223 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:27" (1/1) ...
[2022-12-13 17:49:28,228 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-13 17:49:28,235 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 17:49:28,245 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-12-13 17:49:28,247 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-12-13 17:49:28,271 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-12-13 17:49:28,271 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-12-13 17:49:28,271 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-12-13 17:49:28,271 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-12-13 17:49:28,367 INFO  L235             CfgBuilder]: Building ICFG
[2022-12-13 17:49:28,369 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-12-13 17:49:33,815 INFO  L276             CfgBuilder]: Performing block encoding
[2022-12-13 17:49:33,831 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-12-13 17:49:33,832 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-12-13 17:49:33,835 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:49:33 BoogieIcfgContainer
[2022-12-13 17:49:33,835 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-12-13 17:49:33,836 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-12-13 17:49:33,836 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-12-13 17:49:33,839 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-12-13 17:49:33,839 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:49:25" (1/3) ...
[2022-12-13 17:49:33,840 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e99ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:49:33, skipping insertion in model container
[2022-12-13 17:49:33,840 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:27" (2/3) ...
[2022-12-13 17:49:33,840 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e99ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:49:33, skipping insertion in model container
[2022-12-13 17:49:33,840 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:49:33" (3/3) ...
[2022-12-13 17:49:33,841 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label37.c
[2022-12-13 17:49:33,854 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-12-13 17:49:33,854 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-12-13 17:49:33,915 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-12-13 17:49:33,920 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;@3a91529a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2022-12-13 17:49:33,920 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-12-13 17:49:33,927 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 17:49:34,021 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1647
[2022-12-13 17:49:34,021 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:49:34,022 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]
[2022-12-13 17:49:34,023 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:49:34,030 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:49:34,031 INFO  L85        PathProgramCache]: Analyzing trace with hash 301929178, now seen corresponding path program 1 times
[2022-12-13 17:49:34,037 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:49:34,038 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307879985]
[2022-12-13 17:49:34,038 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:49:34,038 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:49:34,478 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:49:36,513 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 17:49:36,513 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:49:36,513 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307879985]
[2022-12-13 17:49:36,514 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307879985] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:49:36,514 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:49:36,514 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 17:49:36,515 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044335559]
[2022-12-13 17:49:36,516 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:49:36,521 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:49:36,521 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:49:36,550 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:49:36,551 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:49:36,558 INFO  L87              Difference]: Start difference. First operand  has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 548.6666666666666) internal successors, (1646), 2 states have internal predecessors, (1646), 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)
[2022-12-13 17:49:41,792 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:49:41,792 INFO  L93              Difference]: Finished difference Result 6156 states and 11651 transitions.
[2022-12-13 17:49:41,793 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:49:41,795 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 548.6666666666666) internal successors, (1646), 2 states have internal predecessors, (1646), 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 1646
[2022-12-13 17:49:41,803 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:49:41,843 INFO  L225             Difference]: With dead ends: 6156
[2022-12-13 17:49:41,844 INFO  L226             Difference]: Without dead ends: 3907
[2022-12-13 17:49:41,853 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:49:41,857 INFO  L413           NwaCegarLoop]: 1759 mSDtfsCounter, 330 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 5604 mSolverCounterSat, 1469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 7073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1469 IncrementalHoareTripleChecker+Valid, 5604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2022-12-13 17:49:41,857 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 2072 Invalid, 7073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1469 Valid, 5604 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2022-12-13 17:49:41,882 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3907 states.
[2022-12-13 17:49:42,006 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3907 to 3900.
[2022-12-13 17:49:42,015 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3900 states, 3899 states have (on average 1.6196460630931009) internal successors, (6315), 3899 states have internal predecessors, (6315), 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)
[2022-12-13 17:49:42,029 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3900 states to 3900 states and 6315 transitions.
[2022-12-13 17:49:42,030 INFO  L78                 Accepts]: Start accepts. Automaton has 3900 states and 6315 transitions. Word has length 1646
[2022-12-13 17:49:42,034 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:49:42,034 INFO  L495      AbstractCegarLoop]: Abstraction has 3900 states and 6315 transitions.
[2022-12-13 17:49:42,035 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 548.6666666666666) internal successors, (1646), 2 states have internal predecessors, (1646), 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)
[2022-12-13 17:49:42,036 INFO  L276                IsEmpty]: Start isEmpty. Operand 3900 states and 6315 transitions.
[2022-12-13 17:49:42,101 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1652
[2022-12-13 17:49:42,102 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:49:42,103 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:49:42,104 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-12-13 17:49:42,104 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:49:42,105 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:49:42,106 INFO  L85        PathProgramCache]: Analyzing trace with hash -1065085706, now seen corresponding path program 1 times
[2022-12-13 17:49:42,106 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:49:42,106 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862106571]
[2022-12-13 17:49:42,107 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:49:42,107 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:49:42,351 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:49:43,569 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 17:49:43,569 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:49:43,569 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862106571]
[2022-12-13 17:49:43,569 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862106571] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:49:43,569 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:49:43,569 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 17:49:43,569 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747199947]
[2022-12-13 17:49:43,570 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:49:43,571 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:49:43,572 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:49:43,573 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:49:43,573 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:49:43,574 INFO  L87              Difference]: Start difference. First operand 3900 states and 6315 transitions. Second operand  has 3 states, 3 states have (on average 550.3333333333334) internal successors, (1651), 2 states have internal predecessors, (1651), 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)
[2022-12-13 17:49:49,117 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:49:49,118 INFO  L93              Difference]: Finished difference Result 11343 states and 18473 transitions.
[2022-12-13 17:49:49,118 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:49:49,119 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 550.3333333333334) internal successors, (1651), 2 states have internal predecessors, (1651), 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 1651
[2022-12-13 17:49:49,119 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:49:49,135 INFO  L225             Difference]: With dead ends: 11343
[2022-12-13 17:49:49,135 INFO  L226             Difference]: Without dead ends: 7445
[2022-12-13 17:49:49,138 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:49:49,139 INFO  L413           NwaCegarLoop]: 1349 mSDtfsCounter, 1994 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 5241 mSolverCounterSat, 2351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 7592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2351 IncrementalHoareTripleChecker+Valid, 5241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2022-12-13 17:49:49,139 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1994 Valid, 1570 Invalid, 7592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2351 Valid, 5241 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2022-12-13 17:49:49,145 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7445 states.
[2022-12-13 17:49:49,213 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7445 to 7361.
[2022-12-13 17:49:49,223 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7361 states, 7360 states have (on average 1.5039402173913043) internal successors, (11069), 7360 states have internal predecessors, (11069), 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)
[2022-12-13 17:49:49,233 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7361 states to 7361 states and 11069 transitions.
[2022-12-13 17:49:49,233 INFO  L78                 Accepts]: Start accepts. Automaton has 7361 states and 11069 transitions. Word has length 1651
[2022-12-13 17:49:49,234 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:49:49,234 INFO  L495      AbstractCegarLoop]: Abstraction has 7361 states and 11069 transitions.
[2022-12-13 17:49:49,234 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 550.3333333333334) internal successors, (1651), 2 states have internal predecessors, (1651), 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)
[2022-12-13 17:49:49,234 INFO  L276                IsEmpty]: Start isEmpty. Operand 7361 states and 11069 transitions.
[2022-12-13 17:49:49,260 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1662
[2022-12-13 17:49:49,261 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:49:49,262 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2022-12-13 17:49:49,263 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-12-13 17:49:49,263 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:49:49,263 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:49:49,264 INFO  L85        PathProgramCache]: Analyzing trace with hash -724920285, now seen corresponding path program 1 times
[2022-12-13 17:49:49,265 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:49:49,265 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189168806]
[2022-12-13 17:49:49,265 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:49:49,266 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:49:49,463 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:49:50,467 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 17:49:50,467 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:49:50,467 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189168806]
[2022-12-13 17:49:50,467 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189168806] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:49:50,467 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:49:50,468 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 17:49:50,468 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169429318]
[2022-12-13 17:49:50,468 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:49:50,471 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:49:50,471 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:49:50,473 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:49:50,473 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:49:50,474 INFO  L87              Difference]: Start difference. First operand 7361 states and 11069 transitions. Second operand  has 3 states, 3 states have (on average 553.6666666666666) internal successors, (1661), 3 states have internal predecessors, (1661), 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)
[2022-12-13 17:49:54,701 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:49:54,701 INFO  L93              Difference]: Finished difference Result 18191 states and 26962 transitions.
[2022-12-13 17:49:54,701 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:49:54,702 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 553.6666666666666) internal successors, (1661), 3 states have internal predecessors, (1661), 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 1661
[2022-12-13 17:49:54,702 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:49:54,721 INFO  L225             Difference]: With dead ends: 18191
[2022-12-13 17:49:54,721 INFO  L226             Difference]: Without dead ends: 10832
[2022-12-13 17:49:54,727 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:49:54,727 INFO  L413           NwaCegarLoop]: 3610 mSDtfsCounter, 1872 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 5287 mSolverCounterSat, 1356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 3854 SdHoareTripleChecker+Invalid, 6643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1356 IncrementalHoareTripleChecker+Valid, 5287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time
[2022-12-13 17:49:54,728 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 3854 Invalid, 6643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1356 Valid, 5287 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time]
[2022-12-13 17:49:54,735 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10832 states.
[2022-12-13 17:49:54,900 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10832 to 10765.
[2022-12-13 17:49:54,923 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10765 states, 10764 states have (on average 1.4265143069490895) internal successors, (15355), 10764 states have internal predecessors, (15355), 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)
[2022-12-13 17:49:54,945 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10765 states to 10765 states and 15355 transitions.
[2022-12-13 17:49:54,945 INFO  L78                 Accepts]: Start accepts. Automaton has 10765 states and 15355 transitions. Word has length 1661
[2022-12-13 17:49:54,945 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:49:54,945 INFO  L495      AbstractCegarLoop]: Abstraction has 10765 states and 15355 transitions.
[2022-12-13 17:49:54,946 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 553.6666666666666) internal successors, (1661), 3 states have internal predecessors, (1661), 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)
[2022-12-13 17:49:54,947 INFO  L276                IsEmpty]: Start isEmpty. Operand 10765 states and 15355 transitions.
[2022-12-13 17:49:54,988 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1676
[2022-12-13 17:49:54,988 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:49:54,990 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:49:54,990 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-12-13 17:49:54,990 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:49:54,991 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:49:54,992 INFO  L85        PathProgramCache]: Analyzing trace with hash -794500836, now seen corresponding path program 1 times
[2022-12-13 17:49:54,992 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:49:54,992 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026181182]
[2022-12-13 17:49:54,993 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:49:54,993 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:49:55,159 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:49:56,288 INFO  L134       CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 17:49:56,288 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:49:56,288 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026181182]
[2022-12-13 17:49:56,288 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026181182] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:49:56,288 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:49:56,288 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 17:49:56,288 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237382311]
[2022-12-13 17:49:56,289 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:49:56,289 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:49:56,290 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:49:56,291 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:49:56,291 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:49:56,291 INFO  L87              Difference]: Start difference. First operand 10765 states and 15355 transitions. Second operand  has 3 states, 3 states have (on average 558.3333333333334) internal successors, (1675), 3 states have internal predecessors, (1675), 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)
[2022-12-13 17:50:01,137 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:50:01,137 INFO  L93              Difference]: Finished difference Result 31726 states and 45300 transitions.
[2022-12-13 17:50:01,137 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:50:01,138 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 558.3333333333334) internal successors, (1675), 3 states have internal predecessors, (1675), 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 1675
[2022-12-13 17:50:01,138 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:50:01,171 INFO  L225             Difference]: With dead ends: 31726
[2022-12-13 17:50:01,171 INFO  L226             Difference]: Without dead ends: 20963
[2022-12-13 17:50:01,179 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:50:01,180 INFO  L413           NwaCegarLoop]: 1541 mSDtfsCounter, 2545 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 4771 mSolverCounterSat, 2065 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2545 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 6836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2065 IncrementalHoareTripleChecker+Valid, 4771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time
[2022-12-13 17:50:01,180 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2545 Valid, 1733 Invalid, 6836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2065 Valid, 4771 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time]
[2022-12-13 17:50:01,194 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20963 states.
[2022-12-13 17:50:01,441 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20963 to 20962.
[2022-12-13 17:50:01,463 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20962 states, 20961 states have (on average 1.3126759219502886) internal successors, (27515), 20961 states have internal predecessors, (27515), 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)
[2022-12-13 17:50:01,493 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20962 states to 20962 states and 27515 transitions.
[2022-12-13 17:50:01,494 INFO  L78                 Accepts]: Start accepts. Automaton has 20962 states and 27515 transitions. Word has length 1675
[2022-12-13 17:50:01,494 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:50:01,494 INFO  L495      AbstractCegarLoop]: Abstraction has 20962 states and 27515 transitions.
[2022-12-13 17:50:01,495 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 558.3333333333334) internal successors, (1675), 3 states have internal predecessors, (1675), 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)
[2022-12-13 17:50:01,495 INFO  L276                IsEmpty]: Start isEmpty. Operand 20962 states and 27515 transitions.
[2022-12-13 17:50:01,539 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1683
[2022-12-13 17:50:01,539 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:50:01,540 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2022-12-13 17:50:01,540 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-12-13 17:50:01,541 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:50:01,541 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:50:01,541 INFO  L85        PathProgramCache]: Analyzing trace with hash 2002912977, now seen corresponding path program 1 times
[2022-12-13 17:50:01,542 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:50:01,542 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261451671]
[2022-12-13 17:50:01,542 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:50:01,542 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:50:01,759 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:50:02,743 INFO  L134       CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 17:50:02,744 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:50:02,744 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261451671]
[2022-12-13 17:50:02,744 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261451671] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:50:02,744 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:50:02,744 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 17:50:02,744 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260612615]
[2022-12-13 17:50:02,744 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:50:02,745 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:50:02,745 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:50:02,746 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:50:02,746 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:50:02,747 INFO  L87              Difference]: Start difference. First operand 20962 states and 27515 transitions. Second operand  has 3 states, 3 states have (on average 560.6666666666666) internal successors, (1682), 2 states have internal predecessors, (1682), 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)
[2022-12-13 17:50:07,954 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:50:07,954 INFO  L93              Difference]: Finished difference Result 62324 states and 81819 transitions.
[2022-12-13 17:50:07,954 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:50:07,955 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 560.6666666666666) internal successors, (1682), 2 states have internal predecessors, (1682), 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 1682
[2022-12-13 17:50:07,955 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:50:08,002 INFO  L225             Difference]: With dead ends: 62324
[2022-12-13 17:50:08,002 INFO  L226             Difference]: Without dead ends: 41364
[2022-12-13 17:50:08,017 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:50:08,018 INFO  L413           NwaCegarLoop]: 1645 mSDtfsCounter, 2086 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 5010 mSolverCounterSat, 2361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2086 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 7371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2361 IncrementalHoareTripleChecker+Valid, 5010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2022-12-13 17:50:08,018 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2086 Valid, 1787 Invalid, 7371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2361 Valid, 5010 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2022-12-13 17:50:08,046 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41364 states.
[2022-12-13 17:50:08,384 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41364 to 41347.
[2022-12-13 17:50:08,412 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 41347 states, 41346 states have (on average 1.2615246940453733) internal successors, (52159), 41346 states have internal predecessors, (52159), 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)
[2022-12-13 17:50:08,453 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 41347 states to 41347 states and 52159 transitions.
[2022-12-13 17:50:08,453 INFO  L78                 Accepts]: Start accepts. Automaton has 41347 states and 52159 transitions. Word has length 1682
[2022-12-13 17:50:08,454 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:50:08,454 INFO  L495      AbstractCegarLoop]: Abstraction has 41347 states and 52159 transitions.
[2022-12-13 17:50:08,454 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 560.6666666666666) internal successors, (1682), 2 states have internal predecessors, (1682), 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)
[2022-12-13 17:50:08,455 INFO  L276                IsEmpty]: Start isEmpty. Operand 41347 states and 52159 transitions.
[2022-12-13 17:50:08,502 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1684
[2022-12-13 17:50:08,502 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:50:08,502 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:50:08,503 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-12-13 17:50:08,503 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:50:08,503 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:50:08,504 INFO  L85        PathProgramCache]: Analyzing trace with hash -342873352, now seen corresponding path program 1 times
[2022-12-13 17:50:08,504 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:50:08,504 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078530188]
[2022-12-13 17:50:08,504 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:50:08,504 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:50:08,648 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:50:09,285 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 17:50:09,286 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:50:09,286 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078530188]
[2022-12-13 17:50:09,286 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078530188] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:50:09,286 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:50:09,286 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 17:50:09,286 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971154902]
[2022-12-13 17:50:09,286 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:50:09,287 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:50:09,287 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:50:09,288 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:50:09,289 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:50:09,289 INFO  L87              Difference]: Start difference. First operand 41347 states and 52159 transitions. Second operand  has 3 states, 3 states have (on average 561.0) internal successors, (1683), 2 states have internal predecessors, (1683), 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)
[2022-12-13 17:50:13,790 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:50:13,790 INFO  L93              Difference]: Finished difference Result 101365 states and 126190 transitions.
[2022-12-13 17:50:13,790 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:50:13,791 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 561.0) internal successors, (1683), 2 states have internal predecessors, (1683), 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 1683
[2022-12-13 17:50:13,791 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:50:13,853 INFO  L225             Difference]: With dead ends: 101365
[2022-12-13 17:50:13,853 INFO  L226             Difference]: Without dead ends: 60020
[2022-12-13 17:50:13,877 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:50:13,878 INFO  L413           NwaCegarLoop]: 1057 mSDtfsCounter, 3157 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4771 mSolverCounterSat, 1198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3157 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 5969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1198 IncrementalHoareTripleChecker+Valid, 4771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time
[2022-12-13 17:50:13,879 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3157 Valid, 1140 Invalid, 5969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1198 Valid, 4771 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time]
[2022-12-13 17:50:13,922 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 60020 states.
[2022-12-13 17:50:14,387 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 60020 to 60020.
[2022-12-13 17:50:14,423 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 60020 states, 60019 states have (on average 1.1647644912444393) internal successors, (69908), 60019 states have internal predecessors, (69908), 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)
[2022-12-13 17:50:14,567 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60020 states to 60020 states and 69908 transitions.
[2022-12-13 17:50:14,567 INFO  L78                 Accepts]: Start accepts. Automaton has 60020 states and 69908 transitions. Word has length 1683
[2022-12-13 17:50:14,568 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:50:14,568 INFO  L495      AbstractCegarLoop]: Abstraction has 60020 states and 69908 transitions.
[2022-12-13 17:50:14,568 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 561.0) internal successors, (1683), 2 states have internal predecessors, (1683), 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)
[2022-12-13 17:50:14,568 INFO  L276                IsEmpty]: Start isEmpty. Operand 60020 states and 69908 transitions.
[2022-12-13 17:50:14,623 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1740
[2022-12-13 17:50:14,623 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:50:14,624 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:50:14,624 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-12-13 17:50:14,624 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:50:14,625 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:50:14,625 INFO  L85        PathProgramCache]: Analyzing trace with hash -1935454295, now seen corresponding path program 1 times
[2022-12-13 17:50:14,625 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:50:14,625 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169023251]
[2022-12-13 17:50:14,625 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:50:14,626 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:50:14,768 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:50:15,633 INFO  L134       CoverageAnalysis]: Checked inductivity of 118 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2022-12-13 17:50:15,633 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:50:15,633 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169023251]
[2022-12-13 17:50:15,634 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169023251] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:50:15,634 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:50:15,634 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 17:50:15,634 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646938022]
[2022-12-13 17:50:15,634 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:50:15,636 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:50:15,637 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:50:15,638 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:50:15,638 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:50:15,638 INFO  L87              Difference]: Start difference. First operand 60020 states and 69908 transitions. Second operand  has 3 states, 3 states have (on average 578.3333333333334) internal successors, (1735), 3 states have internal predecessors, (1735), 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)
[2022-12-13 17:50:20,572 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:50:20,572 INFO  L93              Difference]: Finished difference Result 150611 states and 177466 transitions.
[2022-12-13 17:50:20,573 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:50:20,573 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 578.3333333333334) internal successors, (1735), 3 states have internal predecessors, (1735), 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 1739
[2022-12-13 17:50:20,573 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:50:20,657 INFO  L225             Difference]: With dead ends: 150611
[2022-12-13 17:50:20,657 INFO  L226             Difference]: Without dead ends: 90593
[2022-12-13 17:50:20,689 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:50:20,690 INFO  L413           NwaCegarLoop]: 3701 mSDtfsCounter, 1979 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 4782 mSolverCounterSat, 2204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1979 SdHoareTripleChecker+Valid, 3938 SdHoareTripleChecker+Invalid, 6986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2204 IncrementalHoareTripleChecker+Valid, 4782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time
[2022-12-13 17:50:20,690 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1979 Valid, 3938 Invalid, 6986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2204 Valid, 4782 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time]
[2022-12-13 17:50:20,759 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 90593 states.
[2022-12-13 17:50:21,337 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 90593 to 90586.
[2022-12-13 17:50:21,385 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 90586 states, 90585 states have (on average 1.1359717392504278) internal successors, (102902), 90585 states have internal predecessors, (102902), 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)
[2022-12-13 17:50:21,493 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 90586 states to 90586 states and 102902 transitions.
[2022-12-13 17:50:21,493 INFO  L78                 Accepts]: Start accepts. Automaton has 90586 states and 102902 transitions. Word has length 1739
[2022-12-13 17:50:21,494 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:50:21,494 INFO  L495      AbstractCegarLoop]: Abstraction has 90586 states and 102902 transitions.
[2022-12-13 17:50:21,494 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 578.3333333333334) internal successors, (1735), 3 states have internal predecessors, (1735), 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)
[2022-12-13 17:50:21,494 INFO  L276                IsEmpty]: Start isEmpty. Operand 90586 states and 102902 transitions.
[2022-12-13 17:50:21,572 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1753
[2022-12-13 17:50:21,572 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:50:21,573 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2022-12-13 17:50:21,573 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-12-13 17:50:21,573 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:50:21,573 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:50:21,574 INFO  L85        PathProgramCache]: Analyzing trace with hash -2018528684, now seen corresponding path program 1 times
[2022-12-13 17:50:21,574 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:50:21,574 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290631743]
[2022-12-13 17:50:21,574 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:50:21,574 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:50:21,822 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:50:22,468 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 17:50:22,468 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:50:22,468 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290631743]
[2022-12-13 17:50:22,468 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290631743] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:50:22,468 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:50:22,468 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 17:50:22,468 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575273456]
[2022-12-13 17:50:22,468 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:50:22,469 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:50:22,469 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:50:22,470 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:50:22,471 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:50:22,471 INFO  L87              Difference]: Start difference. First operand 90586 states and 102902 transitions. Second operand  has 3 states, 3 states have (on average 584.0) internal successors, (1752), 2 states have internal predecessors, (1752), 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)
[2022-12-13 17:50:27,481 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:50:27,481 INFO  L93              Difference]: Finished difference Result 257582 states and 292974 transitions.
[2022-12-13 17:50:27,481 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:50:27,481 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 584.0) internal successors, (1752), 2 states have internal predecessors, (1752), 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 1752
[2022-12-13 17:50:27,482 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:50:27,629 INFO  L225             Difference]: With dead ends: 257582
[2022-12-13 17:50:27,629 INFO  L226             Difference]: Without dead ends: 166998
[2022-12-13 17:50:27,653 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:50:27,654 INFO  L413           NwaCegarLoop]: 1717 mSDtfsCounter, 2394 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4492 mSolverCounterSat, 2358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2394 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 6850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2358 IncrementalHoareTripleChecker+Valid, 4492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time
[2022-12-13 17:50:27,654 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2394 Valid, 1852 Invalid, 6850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2358 Valid, 4492 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time]
[2022-12-13 17:50:27,771 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 166998 states.
[2022-12-13 17:50:28,898 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 166998 to 150007.
[2022-12-13 17:50:28,995 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 150007 states, 150006 states have (on average 1.1076956921723131) internal successors, (166161), 150006 states have internal predecessors, (166161), 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)
[2022-12-13 17:50:29,227 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 150007 states to 150007 states and 166161 transitions.
[2022-12-13 17:50:29,228 INFO  L78                 Accepts]: Start accepts. Automaton has 150007 states and 166161 transitions. Word has length 1752
[2022-12-13 17:50:29,228 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:50:29,228 INFO  L495      AbstractCegarLoop]: Abstraction has 150007 states and 166161 transitions.
[2022-12-13 17:50:29,229 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 584.0) internal successors, (1752), 2 states have internal predecessors, (1752), 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)
[2022-12-13 17:50:29,229 INFO  L276                IsEmpty]: Start isEmpty. Operand 150007 states and 166161 transitions.
[2022-12-13 17:50:29,314 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1792
[2022-12-13 17:50:29,314 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:50:29,315 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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]
[2022-12-13 17:50:29,315 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-12-13 17:50:29,315 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:50:29,315 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:50:29,316 INFO  L85        PathProgramCache]: Analyzing trace with hash -731167869, now seen corresponding path program 1 times
[2022-12-13 17:50:29,316 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:50:29,316 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556226402]
[2022-12-13 17:50:29,316 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:50:29,316 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:50:29,649 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:50:31,041 INFO  L134       CoverageAnalysis]: Checked inductivity of 179 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked.
[2022-12-13 17:50:31,041 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:50:31,041 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556226402]
[2022-12-13 17:50:31,042 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556226402] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:50:31,042 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:50:31,042 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 17:50:31,042 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811570149]
[2022-12-13 17:50:31,042 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:50:31,045 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:50:31,045 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:50:31,047 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:50:31,047 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:50:31,048 INFO  L87              Difference]: Start difference. First operand 150007 states and 166161 transitions. Second operand  has 3 states, 3 states have (on average 585.6666666666666) internal successors, (1757), 3 states have internal predecessors, (1757), 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)
[2022-12-13 17:50:36,051 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:50:36,051 INFO  L93              Difference]: Finished difference Result 300007 states and 332317 transitions.
[2022-12-13 17:50:36,051 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:50:36,051 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 585.6666666666666) internal successors, (1757), 3 states have internal predecessors, (1757), 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 1791
[2022-12-13 17:50:36,052 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:50:36,203 INFO  L225             Difference]: With dead ends: 300007
[2022-12-13 17:50:36,203 INFO  L226             Difference]: Without dead ends: 150002
[2022-12-13 17:50:36,330 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:50:36,331 INFO  L413           NwaCegarLoop]: 3040 mSDtfsCounter, 395 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 5750 mSolverCounterSat, 857 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 3388 SdHoareTripleChecker+Invalid, 6607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 857 IncrementalHoareTripleChecker+Valid, 5750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time
[2022-12-13 17:50:36,331 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 3388 Invalid, 6607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [857 Valid, 5750 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time]
[2022-12-13 17:50:36,421 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 150002 states.
[2022-12-13 17:50:37,385 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 150002 to 149998.
[2022-12-13 17:50:37,470 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 149998 states, 149997 states have (on average 1.0798415968319366) internal successors, (161973), 149997 states have internal predecessors, (161973), 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)
[2022-12-13 17:50:37,744 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 149998 states to 149998 states and 161973 transitions.
[2022-12-13 17:50:37,744 INFO  L78                 Accepts]: Start accepts. Automaton has 149998 states and 161973 transitions. Word has length 1791
[2022-12-13 17:50:37,745 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:50:37,745 INFO  L495      AbstractCegarLoop]: Abstraction has 149998 states and 161973 transitions.
[2022-12-13 17:50:37,746 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 585.6666666666666) internal successors, (1757), 3 states have internal predecessors, (1757), 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)
[2022-12-13 17:50:37,746 INFO  L276                IsEmpty]: Start isEmpty. Operand 149998 states and 161973 transitions.
[2022-12-13 17:50:37,851 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1937
[2022-12-13 17:50:37,851 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:50:37,851 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:50:37,852 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-12-13 17:50:37,852 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:50:37,852 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:50:37,852 INFO  L85        PathProgramCache]: Analyzing trace with hash -667211011, now seen corresponding path program 1 times
[2022-12-13 17:50:37,852 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:50:37,853 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242579884]
[2022-12-13 17:50:37,853 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:50:37,853 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:50:38,088 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:50:40,232 INFO  L134       CoverageAnalysis]: Checked inductivity of 671 backedges. 531 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2022-12-13 17:50:40,232 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:50:40,232 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242579884]
[2022-12-13 17:50:40,232 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242579884] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:50:40,232 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:50:40,232 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 17:50:40,232 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819553289]
[2022-12-13 17:50:40,233 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:50:40,234 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:50:40,234 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:50:40,235 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:50:40,235 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:50:40,235 INFO  L87              Difference]: Start difference. First operand 149998 states and 161973 transitions. Second operand  has 3 states, 3 states have (on average 610.3333333333334) internal successors, (1831), 3 states have internal predecessors, (1831), 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)
[2022-12-13 17:50:46,391 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:50:46,391 INFO  L93              Difference]: Finished difference Result 345902 states and 374798 transitions.
[2022-12-13 17:50:46,391 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:50:46,392 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 610.3333333333334) internal successors, (1831), 3 states have internal predecessors, (1831), 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 1936
[2022-12-13 17:50:46,392 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:50:46,586 INFO  L225             Difference]: With dead ends: 345902
[2022-12-13 17:50:46,586 INFO  L226             Difference]: Without dead ends: 194192
[2022-12-13 17:50:46,642 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:50:46,642 INFO  L413           NwaCegarLoop]: 3877 mSDtfsCounter, 1777 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 6145 mSolverCounterSat, 1202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1777 SdHoareTripleChecker+Valid, 4097 SdHoareTripleChecker+Invalid, 7347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1202 IncrementalHoareTripleChecker+Valid, 6145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time
[2022-12-13 17:50:46,643 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1777 Valid, 4097 Invalid, 7347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1202 Valid, 6145 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time]
[2022-12-13 17:50:46,793 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 194192 states.
[2022-12-13 17:50:48,097 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 194192 to 190740.
[2022-12-13 17:50:48,204 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 190740 states, 190739 states have (on average 1.0713959913808921) internal successors, (204357), 190739 states have internal predecessors, (204357), 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)
[2022-12-13 17:50:48,524 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 190740 states to 190740 states and 204357 transitions.
[2022-12-13 17:50:48,525 INFO  L78                 Accepts]: Start accepts. Automaton has 190740 states and 204357 transitions. Word has length 1936
[2022-12-13 17:50:48,525 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:50:48,525 INFO  L495      AbstractCegarLoop]: Abstraction has 190740 states and 204357 transitions.
[2022-12-13 17:50:48,525 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 610.3333333333334) internal successors, (1831), 3 states have internal predecessors, (1831), 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)
[2022-12-13 17:50:48,526 INFO  L276                IsEmpty]: Start isEmpty. Operand 190740 states and 204357 transitions.
[2022-12-13 17:50:48,651 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1987
[2022-12-13 17:50:48,652 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:50:48,652 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:50:48,653 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-12-13 17:50:48,653 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:50:48,653 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:50:48,653 INFO  L85        PathProgramCache]: Analyzing trace with hash -135147715, now seen corresponding path program 1 times
[2022-12-13 17:50:48,654 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:50:48,654 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667681149]
[2022-12-13 17:50:48,654 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:50:48,654 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:50:48,938 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:50:51,664 INFO  L134       CoverageAnalysis]: Checked inductivity of 666 backedges. 574 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked.
[2022-12-13 17:50:51,664 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:50:51,664 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667681149]
[2022-12-13 17:50:51,665 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667681149] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:50:51,665 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:50:51,665 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 17:50:51,665 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431077391]
[2022-12-13 17:50:51,665 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:50:51,666 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:50:51,666 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:50:51,667 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:50:51,667 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:50:51,667 INFO  L87              Difference]: Start difference. First operand 190740 states and 204357 transitions. Second operand  has 3 states, 3 states have (on average 635.0) internal successors, (1905), 3 states have internal predecessors, (1905), 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)
[2022-12-13 17:50:58,275 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:50:58,275 INFO  L93              Difference]: Finished difference Result 452808 states and 484254 transitions.
[2022-12-13 17:50:58,276 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:50:58,276 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 635.0) internal successors, (1905), 3 states have internal predecessors, (1905), 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 1986
[2022-12-13 17:50:58,276 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:50:58,576 INFO  L225             Difference]: With dead ends: 452808
[2022-12-13 17:50:58,576 INFO  L226             Difference]: Without dead ends: 262069
[2022-12-13 17:50:58,663 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:50:58,663 INFO  L413           NwaCegarLoop]: 827 mSDtfsCounter, 2167 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 5066 mSolverCounterSat, 2163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2167 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 7229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2163 IncrementalHoareTripleChecker+Valid, 5066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time
[2022-12-13 17:50:58,664 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2167 Valid, 922 Invalid, 7229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2163 Valid, 5066 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time]
[2022-12-13 17:50:58,951 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 262069 states.
[2022-12-13 17:51:01,006 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 262069 to 251862.
[2022-12-13 17:51:01,139 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 251862 states, 251861 states have (on average 1.0626059612246437) internal successors, (267629), 251861 states have internal predecessors, (267629), 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)
[2022-12-13 17:51:01,516 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 251862 states to 251862 states and 267629 transitions.
[2022-12-13 17:51:01,516 INFO  L78                 Accepts]: Start accepts. Automaton has 251862 states and 267629 transitions. Word has length 1986
[2022-12-13 17:51:01,516 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:51:01,517 INFO  L495      AbstractCegarLoop]: Abstraction has 251862 states and 267629 transitions.
[2022-12-13 17:51:01,517 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 635.0) internal successors, (1905), 3 states have internal predecessors, (1905), 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)
[2022-12-13 17:51:01,517 INFO  L276                IsEmpty]: Start isEmpty. Operand 251862 states and 267629 transitions.
[2022-12-13 17:51:01,876 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2103
[2022-12-13 17:51:01,876 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:51:01,877 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:51:01,878 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2022-12-13 17:51:01,878 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:51:01,878 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:51:01,879 INFO  L85        PathProgramCache]: Analyzing trace with hash 417391263, now seen corresponding path program 1 times
[2022-12-13 17:51:01,879 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:51:01,879 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049972623]
[2022-12-13 17:51:01,880 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:51:01,880 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:51:02,069 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:51:03,241 INFO  L134       CoverageAnalysis]: Checked inductivity of 834 backedges. 716 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked.
[2022-12-13 17:51:03,241 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:51:03,241 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049972623]
[2022-12-13 17:51:03,241 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049972623] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:51:03,241 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:51:03,241 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 17:51:03,242 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31692904]
[2022-12-13 17:51:03,242 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:51:03,243 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:51:03,243 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:51:03,244 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:51:03,244 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:51:03,244 INFO  L87              Difference]: Start difference. First operand 251862 states and 267629 transitions. Second operand  has 3 states, 3 states have (on average 662.0) internal successors, (1986), 3 states have internal predecessors, (1986), 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)
[2022-12-13 17:51:08,625 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:51:08,625 INFO  L93              Difference]: Finished difference Result 510507 states and 541616 transitions.
[2022-12-13 17:51:08,626 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:51:08,626 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 662.0) internal successors, (1986), 3 states have internal predecessors, (1986), 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 2102
[2022-12-13 17:51:08,626 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:51:08,919 INFO  L225             Difference]: With dead ends: 510507
[2022-12-13 17:51:08,919 INFO  L226             Difference]: Without dead ends: 255237
[2022-12-13 17:51:09,003 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:51:09,004 INFO  L413           NwaCegarLoop]: 2806 mSDtfsCounter, 2269 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 4820 mSolverCounterSat, 1492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2269 SdHoareTripleChecker+Valid, 2906 SdHoareTripleChecker+Invalid, 6312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1492 IncrementalHoareTripleChecker+Valid, 4820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time
[2022-12-13 17:51:09,004 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2269 Valid, 2906 Invalid, 6312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1492 Valid, 4820 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time]
[2022-12-13 17:51:09,201 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 255237 states.
[2022-12-13 17:51:11,475 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 255237 to 246738.
[2022-12-13 17:51:11,545 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 246738 states, 246737 states have (on average 1.0502194644500014) internal successors, (259128), 246737 states have internal predecessors, (259128), 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)
[2022-12-13 17:51:11,930 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 246738 states to 246738 states and 259128 transitions.
[2022-12-13 17:51:11,930 INFO  L78                 Accepts]: Start accepts. Automaton has 246738 states and 259128 transitions. Word has length 2102
[2022-12-13 17:51:11,930 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:51:11,930 INFO  L495      AbstractCegarLoop]: Abstraction has 246738 states and 259128 transitions.
[2022-12-13 17:51:11,931 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 662.0) internal successors, (1986), 3 states have internal predecessors, (1986), 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)
[2022-12-13 17:51:11,931 INFO  L276                IsEmpty]: Start isEmpty. Operand 246738 states and 259128 transitions.
[2022-12-13 17:51:12,071 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2171
[2022-12-13 17:51:12,071 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:51:12,072 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:51:12,072 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2022-12-13 17:51:12,072 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:51:12,073 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:51:12,073 INFO  L85        PathProgramCache]: Analyzing trace with hash 1269160426, now seen corresponding path program 1 times
[2022-12-13 17:51:12,073 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:51:12,073 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709931905]
[2022-12-13 17:51:12,073 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:51:12,073 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:51:12,261 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:51:13,861 INFO  L134       CoverageAnalysis]: Checked inductivity of 604 backedges. 521 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked.
[2022-12-13 17:51:13,861 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:51:13,861 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709931905]
[2022-12-13 17:51:13,862 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709931905] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:51:13,862 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:51:13,862 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 17:51:13,862 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320360306]
[2022-12-13 17:51:13,862 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:51:13,863 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:51:13,863 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:51:13,864 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:51:13,864 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:51:13,864 INFO  L87              Difference]: Start difference. First operand 246738 states and 259128 transitions. Second operand  has 3 states, 3 states have (on average 696.0) internal successors, (2088), 2 states have internal predecessors, (2088), 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)
[2022-12-13 17:51:18,797 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:51:18,797 INFO  L93              Difference]: Finished difference Result 529136 states and 555709 transitions.
[2022-12-13 17:51:18,797 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:51:18,798 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 696.0) internal successors, (2088), 2 states have internal predecessors, (2088), 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 2170
[2022-12-13 17:51:18,798 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:51:19,201 INFO  L225             Difference]: With dead ends: 529136
[2022-12-13 17:51:19,201 INFO  L226             Difference]: Without dead ends: 280667
[2022-12-13 17:51:19,262 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:51:19,263 INFO  L413           NwaCegarLoop]: 1612 mSDtfsCounter, 1867 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 4427 mSolverCounterSat, 1271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1867 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 5698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1271 IncrementalHoareTripleChecker+Valid, 4427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time
[2022-12-13 17:51:19,263 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1867 Valid, 1781 Invalid, 5698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1271 Valid, 4427 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time]
[2022-12-13 17:51:19,435 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 280667 states.
[2022-12-13 17:51:21,775 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 280667 to 275572.
[2022-12-13 17:51:21,914 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 275572 states, 275571 states have (on average 1.0250316615318738) internal successors, (282469), 275571 states have internal predecessors, (282469), 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)
[2022-12-13 17:51:22,366 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 275572 states to 275572 states and 282469 transitions.
[2022-12-13 17:51:22,366 INFO  L78                 Accepts]: Start accepts. Automaton has 275572 states and 282469 transitions. Word has length 2170
[2022-12-13 17:51:22,367 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:51:22,367 INFO  L495      AbstractCegarLoop]: Abstraction has 275572 states and 282469 transitions.
[2022-12-13 17:51:22,367 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 696.0) internal successors, (2088), 2 states have internal predecessors, (2088), 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)
[2022-12-13 17:51:22,367 INFO  L276                IsEmpty]: Start isEmpty. Operand 275572 states and 282469 transitions.
[2022-12-13 17:51:22,663 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2182
[2022-12-13 17:51:22,663 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:51:22,664 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2022-12-13 17:51:22,664 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2022-12-13 17:51:22,664 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:51:22,664 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:51:22,665 INFO  L85        PathProgramCache]: Analyzing trace with hash -1772163056, now seen corresponding path program 1 times
[2022-12-13 17:51:22,665 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:51:22,665 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242021165]
[2022-12-13 17:51:22,665 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:51:22,665 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:51:22,868 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:51:24,491 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 833 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked.
[2022-12-13 17:51:24,491 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:51:24,491 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242021165]
[2022-12-13 17:51:24,491 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242021165] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:51:24,491 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:51:24,491 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 17:51:24,492 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054380154]
[2022-12-13 17:51:24,492 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:51:24,493 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:51:24,493 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:51:24,494 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:51:24,494 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:51:24,494 INFO  L87              Difference]: Start difference. First operand 275572 states and 282469 transitions. Second operand  has 3 states, 3 states have (on average 679.6666666666666) internal successors, (2039), 3 states have internal predecessors, (2039), 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)
[2022-12-13 17:51:29,540 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:51:29,540 INFO  L93              Difference]: Finished difference Result 636036 states and 652649 transitions.
[2022-12-13 17:51:29,541 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:51:29,541 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 679.6666666666666) internal successors, (2039), 3 states have internal predecessors, (2039), 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 2181
[2022-12-13 17:51:29,541 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:51:29,915 INFO  L225             Difference]: With dead ends: 636036
[2022-12-13 17:51:29,915 INFO  L226             Difference]: Without dead ends: 360466
[2022-12-13 17:51:29,985 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:51:29,986 INFO  L413           NwaCegarLoop]: 2865 mSDtfsCounter, 1779 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 4124 mSolverCounterSat, 770 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1779 SdHoareTripleChecker+Valid, 3158 SdHoareTripleChecker+Invalid, 4894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 770 IncrementalHoareTripleChecker+Valid, 4124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2022-12-13 17:51:29,986 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1779 Valid, 3158 Invalid, 4894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [770 Valid, 4124 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2022-12-13 17:51:30,270 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 360466 states.
[2022-12-13 17:51:32,798 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 360466 to 333291.
[2022-12-13 17:51:32,912 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 333291 states, 333290 states have (on average 1.0214287857421465) internal successors, (340432), 333290 states have internal predecessors, (340432), 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)
[2022-12-13 17:51:33,399 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 333291 states to 333291 states and 340432 transitions.
[2022-12-13 17:51:33,399 INFO  L78                 Accepts]: Start accepts. Automaton has 333291 states and 340432 transitions. Word has length 2181
[2022-12-13 17:51:33,400 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:51:33,400 INFO  L495      AbstractCegarLoop]: Abstraction has 333291 states and 340432 transitions.
[2022-12-13 17:51:33,400 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 679.6666666666666) internal successors, (2039), 3 states have internal predecessors, (2039), 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)
[2022-12-13 17:51:33,400 INFO  L276                IsEmpty]: Start isEmpty. Operand 333291 states and 340432 transitions.
[2022-12-13 17:51:33,758 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2357
[2022-12-13 17:51:33,758 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:51:33,759 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2022-12-13 17:51:33,759 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2022-12-13 17:51:33,759 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:51:33,759 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:51:33,760 INFO  L85        PathProgramCache]: Analyzing trace with hash -1513405313, now seen corresponding path program 1 times
[2022-12-13 17:51:33,760 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:51:33,760 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692846258]
[2022-12-13 17:51:33,760 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:51:33,760 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:51:34,088 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:51:35,750 INFO  L134       CoverageAnalysis]: Checked inductivity of 945 backedges. 945 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 17:51:35,750 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:51:35,750 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692846258]
[2022-12-13 17:51:35,750 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692846258] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:51:35,750 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:51:35,751 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 17:51:35,751 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082357846]
[2022-12-13 17:51:35,751 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:51:35,752 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:51:35,752 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:51:35,753 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:51:35,753 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:51:35,753 INFO  L87              Difference]: Start difference. First operand 333291 states and 340432 transitions. Second operand  has 3 states, 3 states have (on average 785.3333333333334) internal successors, (2356), 3 states have internal predecessors, (2356), 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)
[2022-12-13 17:51:40,888 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:51:40,888 INFO  L93              Difference]: Finished difference Result 736247 states and 752633 transitions.
[2022-12-13 17:51:40,888 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:51:40,889 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 785.3333333333334) internal successors, (2356), 3 states have internal predecessors, (2356), 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 2356
[2022-12-13 17:51:40,889 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:51:41,503 INFO  L225             Difference]: With dead ends: 736247
[2022-12-13 17:51:41,503 INFO  L226             Difference]: Without dead ends: 401245
[2022-12-13 17:51:41,593 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:51:41,594 INFO  L413           NwaCegarLoop]: 2916 mSDtfsCounter, 1627 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 4639 mSolverCounterSat, 780 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 3090 SdHoareTripleChecker+Invalid, 5419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 780 IncrementalHoareTripleChecker+Valid, 4639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2022-12-13 17:51:41,594 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1627 Valid, 3090 Invalid, 5419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [780 Valid, 4639 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2022-12-13 17:51:41,912 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 401245 states.
[2022-12-13 17:51:45,049 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 401245 to 385912.
[2022-12-13 17:51:45,211 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 385912 states, 385911 states have (on average 1.017975647234725) internal successors, (392848), 385911 states have internal predecessors, (392848), 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)
[2022-12-13 17:51:45,785 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 385912 states to 385912 states and 392848 transitions.
[2022-12-13 17:51:45,785 INFO  L78                 Accepts]: Start accepts. Automaton has 385912 states and 392848 transitions. Word has length 2356
[2022-12-13 17:51:45,786 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:51:45,786 INFO  L495      AbstractCegarLoop]: Abstraction has 385912 states and 392848 transitions.
[2022-12-13 17:51:45,786 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 785.3333333333334) internal successors, (2356), 3 states have internal predecessors, (2356), 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)
[2022-12-13 17:51:45,786 INFO  L276                IsEmpty]: Start isEmpty. Operand 385912 states and 392848 transitions.
[2022-12-13 17:51:46,223 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2559
[2022-12-13 17:51:46,223 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:51:46,224 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:51:46,224 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2022-12-13 17:51:46,224 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:51:46,224 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:51:46,225 INFO  L85        PathProgramCache]: Analyzing trace with hash -1943903525, now seen corresponding path program 1 times
[2022-12-13 17:51:46,225 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:51:46,225 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738176512]
[2022-12-13 17:51:46,225 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:51:46,225 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:51:46,453 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:51:48,668 INFO  L134       CoverageAnalysis]: Checked inductivity of 1321 backedges. 955 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked.
[2022-12-13 17:51:48,668 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:51:48,668 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738176512]
[2022-12-13 17:51:48,668 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738176512] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:51:48,668 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:51:48,669 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 17:51:48,669 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149871370]
[2022-12-13 17:51:48,669 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:51:48,672 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-13 17:51:48,672 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:51:48,674 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-13 17:51:48,674 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-13 17:51:48,675 INFO  L87              Difference]: Start difference. First operand 385912 states and 392848 transitions. Second operand  has 4 states, 4 states have (on average 554.75) internal successors, (2219), 3 states have internal predecessors, (2219), 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)
[2022-12-13 17:51:55,762 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:51:55,762 INFO  L93              Difference]: Finished difference Result 787106 states and 801143 transitions.
[2022-12-13 17:51:55,762 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-12-13 17:51:55,763 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 554.75) internal successors, (2219), 3 states have internal predecessors, (2219), 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 2558
[2022-12-13 17:51:55,763 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:51:56,239 INFO  L225             Difference]: With dead ends: 787106
[2022-12-13 17:51:56,239 INFO  L226             Difference]: Without dead ends: 399481
[2022-12-13 17:51:56,496 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-13 17:51:56,496 INFO  L413           NwaCegarLoop]: 789 mSDtfsCounter, 3844 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 8128 mSolverCounterSat, 689 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3844 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 8817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 689 IncrementalHoareTripleChecker+Valid, 8128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time
[2022-12-13 17:51:56,496 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3844 Valid, 1008 Invalid, 8817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [689 Valid, 8128 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time]
[2022-12-13 17:51:56,848 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 399481 states.
[2022-12-13 17:52:00,157 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 399481 to 389292.
[2022-12-13 17:52:00,276 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 389292 states, 389291 states have (on average 1.0178247121048265) internal successors, (396230), 389291 states have internal predecessors, (396230), 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)
[2022-12-13 17:52:00,843 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 389292 states to 389292 states and 396230 transitions.
[2022-12-13 17:52:00,843 INFO  L78                 Accepts]: Start accepts. Automaton has 389292 states and 396230 transitions. Word has length 2558
[2022-12-13 17:52:00,844 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:52:00,844 INFO  L495      AbstractCegarLoop]: Abstraction has 389292 states and 396230 transitions.
[2022-12-13 17:52:00,844 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 554.75) internal successors, (2219), 3 states have internal predecessors, (2219), 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)
[2022-12-13 17:52:00,845 INFO  L276                IsEmpty]: Start isEmpty. Operand 389292 states and 396230 transitions.
[2022-12-13 17:52:01,147 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2679
[2022-12-13 17:52:01,147 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:52:01,150 INFO  L195           NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:52:01,150 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2022-12-13 17:52:01,150 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:52:01,150 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:52:01,152 INFO  L85        PathProgramCache]: Analyzing trace with hash -728535038, now seen corresponding path program 1 times
[2022-12-13 17:52:01,152 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:52:01,152 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741284714]
[2022-12-13 17:52:01,152 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:52:01,152 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:52:01,656 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:52:04,185 INFO  L134       CoverageAnalysis]: Checked inductivity of 2497 backedges. 1520 proven. 0 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked.
[2022-12-13 17:52:04,185 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:52:04,185 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741284714]
[2022-12-13 17:52:04,185 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741284714] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:52:04,186 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:52:04,186 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 17:52:04,186 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794868699]
[2022-12-13 17:52:04,186 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:52:04,187 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:52:04,187 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:52:04,188 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:52:04,188 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:52:04,189 INFO  L87              Difference]: Start difference. First operand 389292 states and 396230 transitions. Second operand  has 3 states, 3 states have (on average 712.0) internal successors, (2136), 3 states have internal predecessors, (2136), 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)
[2022-12-13 17:52:09,697 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:52:09,697 INFO  L93              Difference]: Finished difference Result 788815 states and 802709 transitions.
[2022-12-13 17:52:09,698 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:52:09,698 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 712.0) internal successors, (2136), 3 states have internal predecessors, (2136), 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 2678
[2022-12-13 17:52:09,699 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:52:10,175 INFO  L225             Difference]: With dead ends: 788815
[2022-12-13 17:52:10,175 INFO  L226             Difference]: Without dead ends: 397816
[2022-12-13 17:52:10,303 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:52:10,304 INFO  L413           NwaCegarLoop]: 1207 mSDtfsCounter, 1699 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 4750 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 5054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 4750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time
[2022-12-13 17:52:10,304 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1699 Valid, 1390 Invalid, 5054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 4750 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time]
[2022-12-13 17:52:10,744 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 397816 states.
[2022-12-13 17:52:13,514 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 397816 to 384184.
[2022-12-13 17:52:13,646 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 384184 states, 384183 states have (on average 1.016367200006247) internal successors, (390471), 384183 states have internal predecessors, (390471), 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)
[2022-12-13 17:52:14,033 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 384184 states to 384184 states and 390471 transitions.
[2022-12-13 17:52:14,033 INFO  L78                 Accepts]: Start accepts. Automaton has 384184 states and 390471 transitions. Word has length 2678
[2022-12-13 17:52:14,034 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:52:14,034 INFO  L495      AbstractCegarLoop]: Abstraction has 384184 states and 390471 transitions.
[2022-12-13 17:52:14,034 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 712.0) internal successors, (2136), 3 states have internal predecessors, (2136), 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)
[2022-12-13 17:52:14,034 INFO  L276                IsEmpty]: Start isEmpty. Operand 384184 states and 390471 transitions.
[2022-12-13 17:52:14,436 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2687
[2022-12-13 17:52:14,437 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:52:14,437 INFO  L195           NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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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]
[2022-12-13 17:52:14,437 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2022-12-13 17:52:14,438 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:52:14,438 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:52:14,438 INFO  L85        PathProgramCache]: Analyzing trace with hash -1534409712, now seen corresponding path program 1 times
[2022-12-13 17:52:14,438 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:52:14,438 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185244569]
[2022-12-13 17:52:14,438 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:52:14,439 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:52:14,678 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:52:16,742 INFO  L134       CoverageAnalysis]: Checked inductivity of 2432 backedges. 1604 proven. 0 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked.
[2022-12-13 17:52:16,743 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:52:16,743 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185244569]
[2022-12-13 17:52:16,743 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185244569] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:52:16,743 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:52:16,743 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 17:52:16,743 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438164747]
[2022-12-13 17:52:16,743 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:52:16,744 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:52:16,744 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:52:16,745 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:52:16,746 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:52:16,746 INFO  L87              Difference]: Start difference. First operand 384184 states and 390471 transitions. Second operand  has 3 states, 3 states have (on average 717.0) internal successors, (2151), 3 states have internal predecessors, (2151), 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)
[2022-12-13 17:52:21,689 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:52:21,689 INFO  L93              Difference]: Finished difference Result 768358 states and 780920 transitions.
[2022-12-13 17:52:21,689 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:52:21,689 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 717.0) internal successors, (2151), 3 states have internal predecessors, (2151), 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 2686
[2022-12-13 17:52:21,690 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:52:22,137 INFO  L225             Difference]: With dead ends: 768358
[2022-12-13 17:52:22,137 INFO  L226             Difference]: Without dead ends: 384176
[2022-12-13 17:52:22,438 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:52:22,438 INFO  L413           NwaCegarLoop]: 668 mSDtfsCounter, 1748 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4280 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 4905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 4280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2022-12-13 17:52:22,438 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1748 Valid, 789 Invalid, 4905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 4280 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2022-12-13 17:52:22,738 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 384176 states.
[2022-12-13 17:52:25,914 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 384176 to 377377.
[2022-12-13 17:52:26,028 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 377377 states, 377376 states have (on average 1.0131486899007887) internal successors, (382338), 377376 states have internal predecessors, (382338), 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)
[2022-12-13 17:52:26,394 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 377377 states to 377377 states and 382338 transitions.
[2022-12-13 17:52:26,395 INFO  L78                 Accepts]: Start accepts. Automaton has 377377 states and 382338 transitions. Word has length 2686
[2022-12-13 17:52:26,395 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:52:26,395 INFO  L495      AbstractCegarLoop]: Abstraction has 377377 states and 382338 transitions.
[2022-12-13 17:52:26,396 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 717.0) internal successors, (2151), 3 states have internal predecessors, (2151), 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)
[2022-12-13 17:52:26,396 INFO  L276                IsEmpty]: Start isEmpty. Operand 377377 states and 382338 transitions.
[2022-12-13 17:52:26,811 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2717
[2022-12-13 17:52:26,811 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:52:26,812 INFO  L195           NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:52:26,812 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2022-12-13 17:52:26,812 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:52:26,813 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:52:26,813 INFO  L85        PathProgramCache]: Analyzing trace with hash -1554294937, now seen corresponding path program 1 times
[2022-12-13 17:52:26,813 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:52:26,813 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343988791]
[2022-12-13 17:52:26,814 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:52:26,814 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:52:27,037 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:52:29,008 INFO  L134       CoverageAnalysis]: Checked inductivity of 3079 backedges. 1755 proven. 0 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked.
[2022-12-13 17:52:29,008 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:52:29,008 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343988791]
[2022-12-13 17:52:29,008 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343988791] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:52:29,008 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:52:29,008 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 17:52:29,008 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389035919]
[2022-12-13 17:52:29,008 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:52:29,011 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:52:29,011 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:52:29,012 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:52:29,012 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:52:29,013 INFO  L87              Difference]: Start difference. First operand 377377 states and 382338 transitions. Second operand  has 3 states, 3 states have (on average 644.0) internal successors, (1932), 3 states have internal predecessors, (1932), 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)
[2022-12-13 17:52:34,363 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:52:34,363 INFO  L93              Difference]: Finished difference Result 817574 states and 828254 transitions.
[2022-12-13 17:52:34,363 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:52:34,364 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 644.0) internal successors, (1932), 3 states have internal predecessors, (1932), 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 2716
[2022-12-13 17:52:34,364 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:52:34,898 INFO  L225             Difference]: With dead ends: 817574
[2022-12-13 17:52:34,899 INFO  L226             Difference]: Without dead ends: 438499
[2022-12-13 17:52:35,038 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:52:35,039 INFO  L413           NwaCegarLoop]: 2766 mSDtfsCounter, 1740 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 4393 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 2954 SdHoareTripleChecker+Invalid, 4989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 4393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time
[2022-12-13 17:52:35,039 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1740 Valid, 2954 Invalid, 4989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 4393 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time]
[2022-12-13 17:52:35,403 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 438499 states.
[2022-12-13 17:52:39,055 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 438499 to 431698.
[2022-12-13 17:52:39,182 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 431698 states, 431697 states have (on average 1.010456408082521) internal successors, (436211), 431697 states have internal predecessors, (436211), 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)
[2022-12-13 17:52:39,626 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 431698 states to 431698 states and 436211 transitions.
[2022-12-13 17:52:39,626 INFO  L78                 Accepts]: Start accepts. Automaton has 431698 states and 436211 transitions. Word has length 2716
[2022-12-13 17:52:39,626 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:52:39,626 INFO  L495      AbstractCegarLoop]: Abstraction has 431698 states and 436211 transitions.
[2022-12-13 17:52:39,627 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 644.0) internal successors, (1932), 3 states have internal predecessors, (1932), 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)
[2022-12-13 17:52:39,627 INFO  L276                IsEmpty]: Start isEmpty. Operand 431698 states and 436211 transitions.
[2022-12-13 17:52:40,051 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2799
[2022-12-13 17:52:40,051 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:52:40,052 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:52:40,052 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2022-12-13 17:52:40,053 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:52:40,053 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:52:40,053 INFO  L85        PathProgramCache]: Analyzing trace with hash 142590424, now seen corresponding path program 1 times
[2022-12-13 17:52:40,053 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:52:40,053 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76583885]
[2022-12-13 17:52:40,053 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:52:40,054 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:52:40,301 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:52:42,381 INFO  L134       CoverageAnalysis]: Checked inductivity of 1790 backedges. 1433 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked.
[2022-12-13 17:52:42,381 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:52:42,381 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76583885]
[2022-12-13 17:52:42,381 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76583885] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:52:42,382 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:52:42,382 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 17:52:42,382 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402804205]
[2022-12-13 17:52:42,382 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:52:42,383 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:52:42,383 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:52:42,384 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:52:42,384 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:52:42,385 INFO  L87              Difference]: Start difference. First operand 431698 states and 436211 transitions. Second operand  has 3 states, 3 states have (on average 814.3333333333334) internal successors, (2443), 3 states have internal predecessors, (2443), 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)
[2022-12-13 17:52:48,193 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:52:48,193 INFO  L93              Difference]: Finished difference Result 948305 states and 958092 transitions.
[2022-12-13 17:52:48,193 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:52:48,194 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 814.3333333333334) internal successors, (2443), 3 states have internal predecessors, (2443), 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 2798
[2022-12-13 17:52:48,194 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:52:48,936 INFO  L225             Difference]: With dead ends: 948305
[2022-12-13 17:52:48,936 INFO  L226             Difference]: Without dead ends: 516609
[2022-12-13 17:52:49,047 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:52:49,048 INFO  L413           NwaCegarLoop]: 1129 mSDtfsCounter, 1117 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 4362 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 4779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 4362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time
[2022-12-13 17:52:49,048 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 1317 Invalid, 4779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 4362 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time]
[2022-12-13 17:52:49,413 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 516609 states.
[2022-12-13 17:52:53,340 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 516609 to 496223.
[2022-12-13 17:52:53,697 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 496223 states, 496222 states have (on average 1.0089556690352302) internal successors, (500666), 496222 states have internal predecessors, (500666), 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)
[2022-12-13 17:52:54,202 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 496223 states to 496223 states and 500666 transitions.
[2022-12-13 17:52:54,202 INFO  L78                 Accepts]: Start accepts. Automaton has 496223 states and 500666 transitions. Word has length 2798
[2022-12-13 17:52:54,203 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:52:54,203 INFO  L495      AbstractCegarLoop]: Abstraction has 496223 states and 500666 transitions.
[2022-12-13 17:52:54,203 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 814.3333333333334) internal successors, (2443), 3 states have internal predecessors, (2443), 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)
[2022-12-13 17:52:54,204 INFO  L276                IsEmpty]: Start isEmpty. Operand 496223 states and 500666 transitions.
[2022-12-13 17:52:54,685 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3117
[2022-12-13 17:52:54,685 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:52:54,686 INFO  L195           NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:52:54,686 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2022-12-13 17:52:54,686 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:52:54,687 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:52:54,687 INFO  L85        PathProgramCache]: Analyzing trace with hash 48280004, now seen corresponding path program 1 times
[2022-12-13 17:52:54,687 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:52:54,687 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177327570]
[2022-12-13 17:52:54,687 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:52:54,687 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:52:54,955 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:52:59,583 INFO  L134       CoverageAnalysis]: Checked inductivity of 3741 backedges. 2485 proven. 196 refuted. 0 times theorem prover too weak. 1060 trivial. 0 not checked.
[2022-12-13 17:52:59,583 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:52:59,583 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177327570]
[2022-12-13 17:52:59,583 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177327570] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 17:52:59,583 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139643097]
[2022-12-13 17:52:59,584 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:52:59,584 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 17:52:59,584 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 17:52:59,585 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 17:52:59,586 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-12-13 17:53:00,470 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:53:00,482 INFO  L263         TraceCheckSpWp]: Trace formula consists of 3446 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-12-13 17:53:00,517 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 17:53:01,940 INFO  L134       CoverageAnalysis]: Checked inductivity of 3741 backedges. 1466 proven. 0 refuted. 0 times theorem prover too weak. 2275 trivial. 0 not checked.
[2022-12-13 17:53:01,940 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-12-13 17:53:01,941 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139643097] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:53:01,941 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-12-13 17:53:01,941 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2022-12-13 17:53:01,941 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391668697]
[2022-12-13 17:53:01,941 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:53:01,944 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:53:01,944 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:53:01,945 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:53:01,945 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2022-12-13 17:53:01,945 INFO  L87              Difference]: Start difference. First operand 496223 states and 500666 transitions. Second operand  has 3 states, 3 states have (on average 685.3333333333334) internal successors, (2056), 3 states have internal predecessors, (2056), 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)
[2022-12-13 17:53:07,626 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:53:07,626 INFO  L93              Difference]: Finished difference Result 992446 states and 1001333 transitions.
[2022-12-13 17:53:07,627 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:53:07,627 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 685.3333333333334) internal successors, (2056), 3 states have internal predecessors, (2056), 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 3116
[2022-12-13 17:53:07,629 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:53:08,255 INFO  L225             Difference]: With dead ends: 992446
[2022-12-13 17:53:08,255 INFO  L226             Difference]: Without dead ends: 496225
[2022-12-13 17:53:08,448 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3120 GetRequests, 3115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2022-12-13 17:53:08,448 INFO  L413           NwaCegarLoop]: 2703 mSDtfsCounter, 186 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 4299 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 2931 SdHoareTripleChecker+Invalid, 4715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 4299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2022-12-13 17:53:08,449 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 2931 Invalid, 4715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 4299 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2022-12-13 17:53:08,882 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 496225 states.
[2022-12-13 17:53:12,937 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 496225 to 487732.
[2022-12-13 17:53:13,206 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 487732 states, 487731 states have (on average 1.0069013452087319) internal successors, (491097), 487731 states have internal predecessors, (491097), 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)
[2022-12-13 17:53:13,947 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 487732 states to 487732 states and 491097 transitions.
[2022-12-13 17:53:13,947 INFO  L78                 Accepts]: Start accepts. Automaton has 487732 states and 491097 transitions. Word has length 3116
[2022-12-13 17:53:13,948 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:53:13,948 INFO  L495      AbstractCegarLoop]: Abstraction has 487732 states and 491097 transitions.
[2022-12-13 17:53:13,949 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 685.3333333333334) internal successors, (2056), 3 states have internal predecessors, (2056), 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)
[2022-12-13 17:53:13,949 INFO  L276                IsEmpty]: Start isEmpty. Operand 487732 states and 491097 transitions.
[2022-12-13 17:53:14,473 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3393
[2022-12-13 17:53:14,473 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:53:14,474 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:53:14,481 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-12-13 17:53:14,674 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 17:53:14,676 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:53:14,676 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:53:14,678 INFO  L85        PathProgramCache]: Analyzing trace with hash -924646771, now seen corresponding path program 1 times
[2022-12-13 17:53:14,678 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:53:14,679 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452652673]
[2022-12-13 17:53:14,680 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:53:14,680 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:53:15,041 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:53:17,866 INFO  L134       CoverageAnalysis]: Checked inductivity of 3797 backedges. 2170 proven. 0 refuted. 0 times theorem prover too weak. 1627 trivial. 0 not checked.
[2022-12-13 17:53:17,866 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:53:17,866 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452652673]
[2022-12-13 17:53:17,866 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452652673] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:53:17,866 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:53:17,867 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 17:53:17,867 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096442909]
[2022-12-13 17:53:17,867 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:53:17,868 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:53:17,869 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:53:17,870 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:53:17,871 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:53:17,871 INFO  L87              Difference]: Start difference. First operand 487732 states and 491097 transitions. Second operand  has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 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)
[2022-12-13 17:53:23,776 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:53:23,776 INFO  L93              Difference]: Finished difference Result 977161 states and 983887 transitions.
[2022-12-13 17:53:23,776 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:53:23,776 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 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 3392
[2022-12-13 17:53:23,777 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:53:24,416 INFO  L225             Difference]: With dead ends: 977161
[2022-12-13 17:53:24,416 INFO  L226             Difference]: Without dead ends: 487729
[2022-12-13 17:53:24,597 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:53:24,597 INFO  L413           NwaCegarLoop]: 2752 mSDtfsCounter, 1151 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 4368 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 2941 SdHoareTripleChecker+Invalid, 4842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 4368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time
[2022-12-13 17:53:24,598 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 2941 Invalid, 4842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 4368 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time]
[2022-12-13 17:53:25,170 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 487729 states.
[2022-12-13 17:53:28,823 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 487729 to 472433.
[2022-12-13 17:53:28,997 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 472433 states, 472432 states have (on average 1.005672774071189) internal successors, (475112), 472432 states have internal predecessors, (475112), 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)
[2022-12-13 17:53:29,702 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 472433 states to 472433 states and 475112 transitions.
[2022-12-13 17:53:29,702 INFO  L78                 Accepts]: Start accepts. Automaton has 472433 states and 475112 transitions. Word has length 3392
[2022-12-13 17:53:29,702 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:53:29,703 INFO  L495      AbstractCegarLoop]: Abstraction has 472433 states and 475112 transitions.
[2022-12-13 17:53:29,703 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 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)
[2022-12-13 17:53:29,703 INFO  L276                IsEmpty]: Start isEmpty. Operand 472433 states and 475112 transitions.
[2022-12-13 17:53:29,997 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3774
[2022-12-13 17:53:29,997 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:53:29,998 INFO  L195           NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:53:29,998 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21
[2022-12-13 17:53:29,998 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:53:29,998 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:53:29,999 INFO  L85        PathProgramCache]: Analyzing trace with hash -1598090092, now seen corresponding path program 1 times
[2022-12-13 17:53:29,999 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:53:29,999 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891823718]
[2022-12-13 17:53:29,999 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:53:29,999 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:53:30,465 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:53:37,780 INFO  L134       CoverageAnalysis]: Checked inductivity of 5190 backedges. 3037 proven. 422 refuted. 0 times theorem prover too weak. 1731 trivial. 0 not checked.
[2022-12-13 17:53:37,781 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:53:37,781 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891823718]
[2022-12-13 17:53:37,781 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891823718] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 17:53:37,781 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262066061]
[2022-12-13 17:53:37,781 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:53:37,781 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 17:53:37,781 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 17:53:37,782 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 17:53:37,783 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-12-13 17:53:38,723 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:53:38,736 INFO  L263         TraceCheckSpWp]: Trace formula consists of 4163 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-12-13 17:53:38,764 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 17:53:39,707 INFO  L134       CoverageAnalysis]: Checked inductivity of 5190 backedges. 3304 proven. 0 refuted. 0 times theorem prover too weak. 1886 trivial. 0 not checked.
[2022-12-13 17:53:39,707 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-12-13 17:53:39,708 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262066061] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:53:39,708 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-12-13 17:53:39,709 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8
[2022-12-13 17:53:39,709 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3183124]
[2022-12-13 17:53:39,709 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:53:39,711 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:53:39,711 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:53:39,713 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:53:39,713 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2022-12-13 17:53:39,714 INFO  L87              Difference]: Start difference. First operand 472433 states and 475112 transitions. Second operand  has 3 states, 3 states have (on average 989.3333333333334) internal successors, (2968), 3 states have internal predecessors, (2968), 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)
[2022-12-13 17:53:45,260 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:53:45,260 INFO  L93              Difference]: Finished difference Result 955062 states and 960463 transitions.
[2022-12-13 17:53:45,261 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:53:45,261 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 989.3333333333334) internal successors, (2968), 3 states have internal predecessors, (2968), 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 3773
[2022-12-13 17:53:45,262 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:53:45,816 INFO  L225             Difference]: With dead ends: 955062
[2022-12-13 17:53:45,816 INFO  L226             Difference]: Without dead ends: 482630
[2022-12-13 17:53:45,963 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3778 GetRequests, 3772 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2022-12-13 17:53:45,963 INFO  L413           NwaCegarLoop]: 614 mSDtfsCounter, 1109 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4182 mSolverCounterSat, 804 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 4986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 804 IncrementalHoareTripleChecker+Valid, 4182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2022-12-13 17:53:45,963 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 669 Invalid, 4986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [804 Valid, 4182 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2022-12-13 17:53:46,355 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 482630 states.
[2022-12-13 17:53:49,829 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 482630 to 469028.
[2022-12-13 17:53:50,021 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 469028 states, 469027 states have (on average 1.0052683534210185) internal successors, (471498), 469027 states have internal predecessors, (471498), 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)
[2022-12-13 17:53:50,822 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 469028 states to 469028 states and 471498 transitions.
[2022-12-13 17:53:50,822 INFO  L78                 Accepts]: Start accepts. Automaton has 469028 states and 471498 transitions. Word has length 3773
[2022-12-13 17:53:50,823 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:53:50,823 INFO  L495      AbstractCegarLoop]: Abstraction has 469028 states and 471498 transitions.
[2022-12-13 17:53:50,824 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 989.3333333333334) internal successors, (2968), 3 states have internal predecessors, (2968), 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)
[2022-12-13 17:53:50,824 INFO  L276                IsEmpty]: Start isEmpty. Operand 469028 states and 471498 transitions.
[2022-12-13 17:53:51,126 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3836
[2022-12-13 17:53:51,126 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:53:51,127 INFO  L195           NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:53:51,135 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2022-12-13 17:53:51,327 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 17:53:51,328 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:53:51,328 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:53:51,330 INFO  L85        PathProgramCache]: Analyzing trace with hash 1209068166, now seen corresponding path program 1 times
[2022-12-13 17:53:51,330 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:53:51,330 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424430023]
[2022-12-13 17:53:51,331 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:53:51,331 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:53:51,900 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:53:59,443 INFO  L134       CoverageAnalysis]: Checked inductivity of 4757 backedges. 2895 proven. 4 refuted. 0 times theorem prover too weak. 1858 trivial. 0 not checked.
[2022-12-13 17:53:59,443 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:53:59,443 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424430023]
[2022-12-13 17:53:59,444 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424430023] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 17:53:59,444 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556565511]
[2022-12-13 17:53:59,444 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:53:59,444 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 17:53:59,444 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 17:53:59,445 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 17:53:59,445 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-12-13 17:54:00,521 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:54:00,533 INFO  L263         TraceCheckSpWp]: Trace formula consists of 4233 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-12-13 17:54:00,555 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 17:54:01,911 INFO  L134       CoverageAnalysis]: Checked inductivity of 4757 backedges. 2174 proven. 0 refuted. 0 times theorem prover too weak. 2583 trivial. 0 not checked.
[2022-12-13 17:54:01,911 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-12-13 17:54:01,911 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [556565511] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:54:01,911 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-12-13 17:54:01,912 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8
[2022-12-13 17:54:01,912 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727334790]
[2022-12-13 17:54:01,912 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:54:01,913 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:54:01,914 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:54:01,915 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:54:01,915 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2022-12-13 17:54:01,915 INFO  L87              Difference]: Start difference. First operand 469028 states and 471498 transitions. Second operand  has 3 states, 3 states have (on average 877.6666666666666) internal successors, (2633), 3 states have internal predecessors, (2633), 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)
[2022-12-13 17:54:08,288 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:54:08,289 INFO  L93              Difference]: Finished difference Result 922780 states and 927619 transitions.
[2022-12-13 17:54:08,289 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:54:08,290 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 877.6666666666666) internal successors, (2633), 3 states have internal predecessors, (2633), 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 3835
[2022-12-13 17:54:08,293 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:54:08,848 INFO  L225             Difference]: With dead ends: 922780
[2022-12-13 17:54:08,848 INFO  L226             Difference]: Without dead ends: 452055
[2022-12-13 17:54:09,195 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3840 GetRequests, 3834 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2022-12-13 17:54:09,196 INFO  L413           NwaCegarLoop]: 2664 mSDtfsCounter, 143 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 4451 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 4893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 4451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time
[2022-12-13 17:54:09,196 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 2808 Invalid, 4893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 4451 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time]
[2022-12-13 17:54:09,492 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 452055 states.
[2022-12-13 17:54:12,758 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 452055 to 429941.
[2022-12-13 17:54:12,964 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 429941 states, 429940 states have (on average 1.0043145555193749) internal successors, (431795), 429940 states have internal predecessors, (431795), 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)
[2022-12-13 17:54:13,578 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 429941 states to 429941 states and 431795 transitions.
[2022-12-13 17:54:13,578 INFO  L78                 Accepts]: Start accepts. Automaton has 429941 states and 431795 transitions. Word has length 3835
[2022-12-13 17:54:13,579 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:54:13,579 INFO  L495      AbstractCegarLoop]: Abstraction has 429941 states and 431795 transitions.
[2022-12-13 17:54:13,580 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 877.6666666666666) internal successors, (2633), 3 states have internal predecessors, (2633), 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)
[2022-12-13 17:54:13,580 INFO  L276                IsEmpty]: Start isEmpty. Operand 429941 states and 431795 transitions.
[2022-12-13 17:54:14,134 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4645
[2022-12-13 17:54:14,135 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:54:14,136 INFO  L195           NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:54:14,143 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2022-12-13 17:54:14,336 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 17:54:14,337 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:54:14,338 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:54:14,340 INFO  L85        PathProgramCache]: Analyzing trace with hash -1251736348, now seen corresponding path program 1 times
[2022-12-13 17:54:14,341 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:54:14,341 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280956435]
[2022-12-13 17:54:14,342 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:54:14,342 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:54:14,754 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:54:24,511 INFO  L134       CoverageAnalysis]: Checked inductivity of 7982 backedges. 4015 proven. 422 refuted. 0 times theorem prover too weak. 3545 trivial. 0 not checked.
[2022-12-13 17:54:24,511 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:54:24,512 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280956435]
[2022-12-13 17:54:24,512 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280956435] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 17:54:24,512 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639934975]
[2022-12-13 17:54:24,512 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:54:24,513 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 17:54:24,513 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 17:54:24,513 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 17:54:24,514 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-12-13 17:54:25,587 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:54:25,603 INFO  L263         TraceCheckSpWp]: Trace formula consists of 5120 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-12-13 17:54:25,637 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 17:54:26,883 INFO  L134       CoverageAnalysis]: Checked inductivity of 7982 backedges. 2988 proven. 0 refuted. 0 times theorem prover too weak. 4994 trivial. 0 not checked.
[2022-12-13 17:54:26,883 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-12-13 17:54:26,883 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639934975] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:54:26,883 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-12-13 17:54:26,884 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8
[2022-12-13 17:54:26,884 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728710850]
[2022-12-13 17:54:26,884 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:54:26,886 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:54:26,886 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:54:26,887 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:54:26,887 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2022-12-13 17:54:26,887 INFO  L87              Difference]: Start difference. First operand 429941 states and 431795 transitions. Second operand  has 3 states, 3 states have (on average 979.0) internal successors, (2937), 3 states have internal predecessors, (2937), 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)
[2022-12-13 17:54:32,434 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:54:32,434 INFO  L93              Difference]: Finished difference Result 839455 states and 842992 transitions.
[2022-12-13 17:54:32,434 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:54:32,435 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 979.0) internal successors, (2937), 3 states have internal predecessors, (2937), 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 4644
[2022-12-13 17:54:32,437 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:54:32,951 INFO  L225             Difference]: With dead ends: 839455
[2022-12-13 17:54:32,951 INFO  L226             Difference]: Without dead ends: 402712
[2022-12-13 17:54:33,120 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4649 GetRequests, 4643 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2022-12-13 17:54:33,121 INFO  L413           NwaCegarLoop]: 2370 mSDtfsCounter, 214 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 4114 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 2467 SdHoareTripleChecker+Invalid, 4463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 4114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2022-12-13 17:54:33,121 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 2467 Invalid, 4463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 4114 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2022-12-13 17:54:33,473 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 402712 states.
[2022-12-13 17:54:36,352 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 402712 to 392512.
[2022-12-13 17:54:36,525 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 392512 states, 392511 states have (on average 1.0033527722789934) internal successors, (393827), 392511 states have internal predecessors, (393827), 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)
[2022-12-13 17:54:37,114 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 392512 states to 392512 states and 393827 transitions.
[2022-12-13 17:54:37,114 INFO  L78                 Accepts]: Start accepts. Automaton has 392512 states and 393827 transitions. Word has length 4644
[2022-12-13 17:54:37,115 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:54:37,115 INFO  L495      AbstractCegarLoop]: Abstraction has 392512 states and 393827 transitions.
[2022-12-13 17:54:37,116 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 979.0) internal successors, (2937), 3 states have internal predecessors, (2937), 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)
[2022-12-13 17:54:37,116 INFO  L276                IsEmpty]: Start isEmpty. Operand 392512 states and 393827 transitions.
[2022-12-13 17:54:37,497 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5314
[2022-12-13 17:54:37,497 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:54:37,498 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:54:37,507 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2022-12-13 17:54:37,699 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 17:54:37,700 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:54:37,701 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:54:37,703 INFO  L85        PathProgramCache]: Analyzing trace with hash -194093670, now seen corresponding path program 1 times
[2022-12-13 17:54:37,703 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:54:37,703 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260600927]
[2022-12-13 17:54:37,704 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:54:37,705 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:54:38,373 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:54:47,770 INFO  L134       CoverageAnalysis]: Checked inductivity of 7657 backedges. 2479 proven. 0 refuted. 0 times theorem prover too weak. 5178 trivial. 0 not checked.
[2022-12-13 17:54:47,770 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:54:47,770 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260600927]
[2022-12-13 17:54:47,770 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260600927] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:54:47,770 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:54:47,771 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 17:54:47,771 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437184291]
[2022-12-13 17:54:47,771 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:54:47,773 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:54:47,773 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:54:47,774 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:54:47,774 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:54:47,774 INFO  L87              Difference]: Start difference. First operand 392512 states and 393827 transitions. Second operand  has 3 states, 3 states have (on average 761.3333333333334) internal successors, (2284), 3 states have internal predecessors, (2284), 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)
[2022-12-13 17:54:52,095 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:54:52,095 INFO  L93              Difference]: Finished difference Result 786723 states and 789358 transitions.
[2022-12-13 17:54:52,095 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:54:52,096 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 761.3333333333334) internal successors, (2284), 3 states have internal predecessors, (2284), 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 5313
[2022-12-13 17:54:52,097 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:54:52,548 INFO  L225             Difference]: With dead ends: 786723
[2022-12-13 17:54:52,548 INFO  L226             Difference]: Without dead ends: 394209
[2022-12-13 17:54:52,689 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:54:52,689 INFO  L413           NwaCegarLoop]: 2547 mSDtfsCounter, 1097 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 4133 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 4183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 4133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time
[2022-12-13 17:54:52,690 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 2671 Invalid, 4183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 4133 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time]
[2022-12-13 17:54:53,019 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 394209 states.
[2022-12-13 17:54:55,922 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 394209 to 390810.
[2022-12-13 17:54:56,056 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 390810 states, 390809 states have (on average 1.0032010521763828) internal successors, (392060), 390809 states have internal predecessors, (392060), 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)
[2022-12-13 17:54:56,431 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 390810 states to 390810 states and 392060 transitions.
[2022-12-13 17:54:56,431 INFO  L78                 Accepts]: Start accepts. Automaton has 390810 states and 392060 transitions. Word has length 5313
[2022-12-13 17:54:56,431 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:54:56,431 INFO  L495      AbstractCegarLoop]: Abstraction has 390810 states and 392060 transitions.
[2022-12-13 17:54:56,432 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 761.3333333333334) internal successors, (2284), 3 states have internal predecessors, (2284), 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)
[2022-12-13 17:54:56,432 INFO  L276                IsEmpty]: Start isEmpty. Operand 390810 states and 392060 transitions.
[2022-12-13 17:54:57,191 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6426
[2022-12-13 17:54:57,191 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:54:57,192 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:54:57,192 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25
[2022-12-13 17:54:57,192 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:54:57,192 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:54:57,193 INFO  L85        PathProgramCache]: Analyzing trace with hash -1849496635, now seen corresponding path program 1 times
[2022-12-13 17:54:57,193 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:54:57,193 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921985037]
[2022-12-13 17:54:57,193 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:54:57,193 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:54:57,745 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:55:21,252 INFO  L134       CoverageAnalysis]: Checked inductivity of 12020 backedges. 4435 proven. 0 refuted. 0 times theorem prover too weak. 7585 trivial. 0 not checked.
[2022-12-13 17:55:21,252 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:55:21,252 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921985037]
[2022-12-13 17:55:21,252 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921985037] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:55:21,252 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:55:21,253 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2022-12-13 17:55:21,253 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127065555]
[2022-12-13 17:55:21,253 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:55:21,254 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-12-13 17:55:21,254 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:55:21,256 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-12-13 17:55:21,256 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2022-12-13 17:55:21,256 INFO  L87              Difference]: Start difference. First operand 390810 states and 392060 transitions. Second operand  has 9 states, 9 states have (on average 309.0) internal successors, (2781), 8 states have internal predecessors, (2781), 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)
[2022-12-13 17:55:37,718 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:55:37,718 INFO  L93              Difference]: Finished difference Result 1867631 states and 1874100 transitions.
[2022-12-13 17:55:37,719 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. 
[2022-12-13 17:55:37,719 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 309.0) internal successors, (2781), 8 states have internal predecessors, (2781), 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 6425
[2022-12-13 17:55:37,720 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:55:39,561 INFO  L225             Difference]: With dead ends: 1867631
[2022-12-13 17:55:39,562 INFO  L226             Difference]: Without dead ends: 1478521
[2022-12-13 17:55:39,931 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1859 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=919, Invalid=4337, Unknown=0, NotChecked=0, Total=5256
[2022-12-13 17:55:39,931 INFO  L413           NwaCegarLoop]: 4825 mSDtfsCounter, 15799 mSDsluCounter, 37933 mSDsCounter, 0 mSdLazyCounter, 16596 mSolverCounterSat, 700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15799 SdHoareTripleChecker+Valid, 42758 SdHoareTripleChecker+Invalid, 17296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 16596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time
[2022-12-13 17:55:39,931 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15799 Valid, 42758 Invalid, 17296 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [700 Valid, 16596 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time]
[2022-12-13 17:55:41,323 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1478521 states.
[2022-12-13 17:55:50,219 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478521 to 390810.
[2022-12-13 17:55:50,335 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 390810 states, 390809 states have (on average 1.0031908169975614) internal successors, (392056), 390809 states have internal predecessors, (392056), 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)
[2022-12-13 17:55:50,663 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 390810 states to 390810 states and 392056 transitions.
[2022-12-13 17:55:50,663 INFO  L78                 Accepts]: Start accepts. Automaton has 390810 states and 392056 transitions. Word has length 6425
[2022-12-13 17:55:50,664 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:55:50,664 INFO  L495      AbstractCegarLoop]: Abstraction has 390810 states and 392056 transitions.
[2022-12-13 17:55:50,664 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 309.0) internal successors, (2781), 8 states have internal predecessors, (2781), 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)
[2022-12-13 17:55:50,665 INFO  L276                IsEmpty]: Start isEmpty. Operand 390810 states and 392056 transitions.
[2022-12-13 17:55:51,346 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6459
[2022-12-13 17:55:51,346 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:55:51,347 INFO  L195           NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:55:51,347 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26
[2022-12-13 17:55:51,347 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:55:51,347 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:55:51,348 INFO  L85        PathProgramCache]: Analyzing trace with hash -241970284, now seen corresponding path program 1 times
[2022-12-13 17:55:51,348 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:55:51,348 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290202246]
[2022-12-13 17:55:51,348 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:55:51,348 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:55:51,941 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:56:03,795 INFO  L134       CoverageAnalysis]: Checked inductivity of 12646 backedges. 6833 proven. 0 refuted. 0 times theorem prover too weak. 5813 trivial. 0 not checked.
[2022-12-13 17:56:03,795 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:56:03,795 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290202246]
[2022-12-13 17:56:03,795 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290202246] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:56:03,795 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:56:03,796 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 17:56:03,796 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442232755]
[2022-12-13 17:56:03,796 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:56:03,798 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:56:03,798 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:56:03,799 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:56:03,799 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:56:03,799 INFO  L87              Difference]: Start difference. First operand 390810 states and 392056 transitions. Second operand  has 3 states, 3 states have (on average 956.3333333333334) internal successors, (2869), 3 states have internal predecessors, (2869), 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)
[2022-12-13 17:56:08,547 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:56:08,547 INFO  L93              Difference]: Finished difference Result 786716 states and 789240 transitions.
[2022-12-13 17:56:08,548 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:56:08,548 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 956.3333333333334) internal successors, (2869), 3 states have internal predecessors, (2869), 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 6458
[2022-12-13 17:56:08,550 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:56:09,036 INFO  L225             Difference]: With dead ends: 786716
[2022-12-13 17:56:09,036 INFO  L226             Difference]: Without dead ends: 397606
[2022-12-13 17:56:09,201 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:56:09,201 INFO  L413           NwaCegarLoop]: 2537 mSDtfsCounter, 1606 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4123 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 2659 SdHoareTripleChecker+Invalid, 4195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 4123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time
[2022-12-13 17:56:09,202 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1606 Valid, 2659 Invalid, 4195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 4123 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time]
[2022-12-13 17:56:09,545 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 397606 states.
[2022-12-13 17:56:12,809 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 397606 to 397602.
[2022-12-13 17:56:12,989 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 397602 states, 397601 states have (on average 1.003005525640026) internal successors, (398796), 397601 states have internal predecessors, (398796), 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)
[2022-12-13 17:56:13,606 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 397602 states to 397602 states and 398796 transitions.
[2022-12-13 17:56:13,607 INFO  L78                 Accepts]: Start accepts. Automaton has 397602 states and 398796 transitions. Word has length 6458
[2022-12-13 17:56:13,608 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:56:13,608 INFO  L495      AbstractCegarLoop]: Abstraction has 397602 states and 398796 transitions.
[2022-12-13 17:56:13,608 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 956.3333333333334) internal successors, (2869), 3 states have internal predecessors, (2869), 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)
[2022-12-13 17:56:13,608 INFO  L276                IsEmpty]: Start isEmpty. Operand 397602 states and 398796 transitions.
[2022-12-13 17:56:14,277 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6814
[2022-12-13 17:56:14,278 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:56:14,278 INFO  L195           NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:56:14,279 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27
[2022-12-13 17:56:14,279 INFO  L420      AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:56:14,279 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:56:14,279 INFO  L85        PathProgramCache]: Analyzing trace with hash -1634375754, now seen corresponding path program 1 times
[2022-12-13 17:56:14,279 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:56:14,279 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172508369]
[2022-12-13 17:56:14,280 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:56:14,280 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:56:15,029 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:56:45,024 INFO  L134       CoverageAnalysis]: Checked inductivity of 13513 backedges. 7544 proven. 770 refuted. 0 times theorem prover too weak. 5199 trivial. 0 not checked.
[2022-12-13 17:56:45,024 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:56:45,024 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172508369]
[2022-12-13 17:56:45,024 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172508369] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 17:56:45,024 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622585223]
[2022-12-13 17:56:45,024 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:56:45,025 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 17:56:45,025 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 17:56:45,025 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 17:56:45,026 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b44f5eb-61c4-46be-8afa-9faa5ac640c5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process