./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label12.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 2329fc70
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de233b6-5dbc-4029-8bf8-c2f2e8c85469/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de233b6-5dbc-4029-8bf8-c2f2e8c85469/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_4de233b6-5dbc-4029-8bf8-c2f2e8c85469/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de233b6-5dbc-4029-8bf8-c2f2e8c85469/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de233b6-5dbc-4029-8bf8-c2f2e8c85469/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_4de233b6-5dbc-4029-8bf8-c2f2e8c85469/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 8a742001fc048cf2c19a5ef7c9a088e49806c4d0813d840a2d758559c7b8b5ba
--- 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 17:49:02,694 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-12-13 17:49:02,695 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-12-13 17:49:02,716 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-12-13 17:49:02,717 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-12-13 17:49:02,717 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-12-13 17:49:02,718 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-12-13 17:49:02,719 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-12-13 17:49:02,720 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-12-13 17:49:02,721 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-12-13 17:49:02,722 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-12-13 17:49:02,722 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-12-13 17:49:02,723 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-12-13 17:49:02,724 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-12-13 17:49:02,725 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-12-13 17:49:02,726 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-12-13 17:49:02,726 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-12-13 17:49:02,727 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-12-13 17:49:02,728 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-12-13 17:49:02,729 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-12-13 17:49:02,730 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-12-13 17:49:02,732 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-12-13 17:49:02,733 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-12-13 17:49:02,734 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-12-13 17:49:02,737 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-12-13 17:49:02,737 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-12-13 17:49:02,738 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-12-13 17:49:02,739 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-12-13 17:49:02,739 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-12-13 17:49:02,740 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-12-13 17:49:02,740 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-12-13 17:49:02,741 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-12-13 17:49:02,742 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-12-13 17:49:02,742 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-12-13 17:49:02,743 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-12-13 17:49:02,743 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-12-13 17:49:02,744 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-12-13 17:49:02,744 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-12-13 17:49:02,744 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-12-13 17:49:02,745 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-12-13 17:49:02,746 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-12-13 17:49:02,746 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de233b6-5dbc-4029-8bf8-c2f2e8c85469/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-12-13 17:49:02,766 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-12-13 17:49:02,767 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-12-13 17:49:02,767 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-12-13 17:49:02,767 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-12-13 17:49:02,768 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-12-13 17:49:02,768 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-12-13 17:49:02,768 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-12-13 17:49:02,769 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-12-13 17:49:02,769 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-12-13 17:49:02,769 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-12-13 17:49:02,769 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-12-13 17:49:02,769 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-12-13 17:49:02,769 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-12-13 17:49:02,769 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-12-13 17:49:02,770 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-12-13 17:49:02,770 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-12-13 17:49:02,770 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-12-13 17:49:02,770 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-12-13 17:49:02,770 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-12-13 17:49:02,770 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-12-13 17:49:02,771 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-12-13 17:49:02,771 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-12-13 17:49:02,771 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-12-13 17:49:02,771 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-12-13 17:49:02,771 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-13 17:49:02,771 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-12-13 17:49:02,771 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-12-13 17:49:02,772 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-12-13 17:49:02,772 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-12-13 17:49:02,772 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-12-13 17:49:02,772 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-12-13 17:49:02,772 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-12-13 17:49:02,772 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2022-12-13 17:49:02,773 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-12-13 17:49:02,773 INFO  L138        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2022-12-13 17:49:02,773 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_4de233b6-5dbc-4029-8bf8-c2f2e8c85469/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_4de233b6-5dbc-4029-8bf8-c2f2e8c85469/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 -> 8a742001fc048cf2c19a5ef7c9a088e49806c4d0813d840a2d758559c7b8b5ba
[2022-12-13 17:49:02,935 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-12-13 17:49:02,955 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-12-13 17:49:02,957 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-12-13 17:49:02,958 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-12-13 17:49:02,959 INFO  L275        PluginConnector]: CDTParser initialized
[2022-12-13 17:49:02,960 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de233b6-5dbc-4029-8bf8-c2f2e8c85469/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/eca-rers2012/Problem07_label12.c
[2022-12-13 17:49:05,449 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-12-13 17:49:06,627 INFO  L351              CDTParser]: Found 1 translation units.
[2022-12-13 17:49:06,627 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de233b6-5dbc-4029-8bf8-c2f2e8c85469/sv-benchmarks/c/eca-rers2012/Problem07_label12.c
[2022-12-13 17:49:06,743 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de233b6-5dbc-4029-8bf8-c2f2e8c85469/bin/uautomizer-uyxdKDjOR8/data/83e433c1d/847e7f61662f4290b1f47b43a9e90f08/FLAG538013fe1
[2022-12-13 17:49:07,006 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de233b6-5dbc-4029-8bf8-c2f2e8c85469/bin/uautomizer-uyxdKDjOR8/data/83e433c1d/847e7f61662f4290b1f47b43a9e90f08
[2022-12-13 17:49:07,008 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-12-13 17:49:07,009 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-12-13 17:49:07,010 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-12-13 17:49:07,010 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-12-13 17:49:07,013 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-12-13 17:49:07,014 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:49:07" (1/1) ...
[2022-12-13 17:49:07,014 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e3a2a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:07, skipping insertion in model container
[2022-12-13 17:49:07,015 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:49:07" (1/1) ...
[2022-12-13 17:49:07,020 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-12-13 17:49:07,633 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-12-13 17:49:17,229 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_4de233b6-5dbc-4029-8bf8-c2f2e8c85469/sv-benchmarks/c/eca-rers2012/Problem07_label12.c[2774099,2774112]
[2022-12-13 17:49:17,279 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-13 17:49:17,286 INFO  L203         MainTranslator]: Completed pre-run
[2022-12-13 17:49:23,083 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_4de233b6-5dbc-4029-8bf8-c2f2e8c85469/sv-benchmarks/c/eca-rers2012/Problem07_label12.c[2774099,2774112]
[2022-12-13 17:49:23,087 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-13 17:49:23,764 INFO  L208         MainTranslator]: Completed translation
[2022-12-13 17:49:23,764 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:23 WrapperNode
[2022-12-13 17:49:23,764 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-12-13 17:49:23,765 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-12-13 17:49:23,765 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-12-13 17:49:23,765 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-12-13 17:49:23,769 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:23" (1/1) ...
[2022-12-13 17:49:24,065 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:23" (1/1) ...
[2022-12-13 17:49:25,142 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2022-12-13 17:49:25,142 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-12-13 17:49:25,143 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-12-13 17:49:25,143 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-12-13 17:49:25,143 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-12-13 17:49:25,150 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:23" (1/1) ...
[2022-12-13 17:49:25,150 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:23" (1/1) ...
[2022-12-13 17:49:25,331 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:23" (1/1) ...
[2022-12-13 17:49:25,331 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:23" (1/1) ...
[2022-12-13 17:49:25,958 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:23" (1/1) ...
[2022-12-13 17:49:26,072 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:23" (1/1) ...
[2022-12-13 17:49:26,169 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:23" (1/1) ...
[2022-12-13 17:49:26,230 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:23" (1/1) ...
[2022-12-13 17:49:26,515 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-12-13 17:49:26,516 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-12-13 17:49:26,516 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-12-13 17:49:26,516 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-12-13 17:49:26,516 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:23" (1/1) ...
[2022-12-13 17:49:26,522 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-13 17:49:26,530 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de233b6-5dbc-4029-8bf8-c2f2e8c85469/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 17:49:26,540 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de233b6-5dbc-4029-8bf8-c2f2e8c85469/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-12-13 17:49:26,542 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de233b6-5dbc-4029-8bf8-c2f2e8c85469/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-12-13 17:49:26,566 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-12-13 17:49:26,566 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-12-13 17:49:26,566 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-12-13 17:49:26,566 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-12-13 17:49:26,671 INFO  L235             CfgBuilder]: Building ICFG
[2022-12-13 17:49:26,673 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-12-13 17:49:58,564 INFO  L276             CfgBuilder]: Performing block encoding
[2022-12-13 17:49:58,597 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-12-13 17:49:58,597 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-12-13 17:49:58,604 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:49:58 BoogieIcfgContainer
[2022-12-13 17:49:58,604 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-12-13 17:49:58,605 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-12-13 17:49:58,605 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-12-13 17:49:58,608 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-12-13 17:49:58,608 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:49:07" (1/3) ...
[2022-12-13 17:49:58,608 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c27c18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:49:58, skipping insertion in model container
[2022-12-13 17:49:58,608 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:49:23" (2/3) ...
[2022-12-13 17:49:58,608 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c27c18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:49:58, skipping insertion in model container
[2022-12-13 17:49:58,609 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:49:58" (3/3) ...
[2022-12-13 17:49:58,609 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem07_label12.c
[2022-12-13 17:49:58,622 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-12-13 17:49:58,622 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-12-13 17:49:58,744 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-12-13 17:49:58,751 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;@370f4d8c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2022-12-13 17:49:58,751 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-12-13 17:49:58,782 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 17:49:59,285 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10130
[2022-12-13 17:49:59,285 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:49:59,288 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 17:49:59,289 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:49:59,293 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:49:59,296 INFO  L85        PathProgramCache]: Analyzing trace with hash 1781731849, now seen corresponding path program 1 times
[2022-12-13 17:49:59,303 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:49:59,303 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951388478]
[2022-12-13 17:49:59,305 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:49:59,306 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:50:01,315 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:50:46,335 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 17:50:46,335 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:50:46,335 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951388478]
[2022-12-13 17:50:46,336 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951388478] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:50:46,336 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:50:46,337 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 17:50:46,338 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548221380]
[2022-12-13 17:50:46,338 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:50:46,347 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-13 17:50:46,347 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:50:46,372 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-13 17:50:46,373 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-12-13 17:50:46,393 INFO  L87              Difference]: Start difference. First operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 2532.25) internal successors, (10129), 3 states have internal predecessors, (10129), 0 states have call successors, (0), 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 17:51:35,406 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:51:35,407 INFO  L93              Difference]: Finished difference Result 40898 states and 81470 transitions.
[2022-12-13 17:51:35,408 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-12-13 17:51:35,412 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2532.25) internal successors, (10129), 3 states have internal predecessors, (10129), 0 states have call successors, (0), 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 10129
[2022-12-13 17:51:35,429 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:51:35,516 INFO  L225             Difference]: With dead ends: 40898
[2022-12-13 17:51:35,517 INFO  L226             Difference]: Without dead ends: 30574
[2022-12-13 17:51:35,532 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-12-13 17:51:35,534 INFO  L413           NwaCegarLoop]: 5139 mSDtfsCounter, 22300 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 51972 mSolverCounterSat, 19077 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22300 SdHoareTripleChecker+Valid, 5256 SdHoareTripleChecker+Invalid, 71049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 19077 IncrementalHoareTripleChecker+Valid, 51972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.0s IncrementalHoareTripleChecker+Time
[2022-12-13 17:51:35,535 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22300 Valid, 5256 Invalid, 71049 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [19077 Valid, 51972 Invalid, 0 Unknown, 0 Unchecked, 48.0s Time]
[2022-12-13 17:51:35,574 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30574 states.
[2022-12-13 17:51:35,969 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30574 to 30574.
[2022-12-13 17:51:36,006 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30574 states, 30573 states have (on average 1.496549242795931) internal successors, (45754), 30573 states have internal predecessors, (45754), 0 states have call successors, (0), 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 17:51:36,049 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30574 states to 30574 states and 45754 transitions.
[2022-12-13 17:51:36,050 INFO  L78                 Accepts]: Start accepts. Automaton has 30574 states and 45754 transitions. Word has length 10129
[2022-12-13 17:51:36,060 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:51:36,060 INFO  L495      AbstractCegarLoop]: Abstraction has 30574 states and 45754 transitions.
[2022-12-13 17:51:36,062 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2532.25) internal successors, (10129), 3 states have internal predecessors, (10129), 0 states have call successors, (0), 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 17:51:36,063 INFO  L276                IsEmpty]: Start isEmpty. Operand 30574 states and 45754 transitions.
[2022-12-13 17:51:36,973 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13029
[2022-12-13 17:51:36,974 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:51:36,982 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-12-13 17:51:36,983 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-12-13 17:51:36,983 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:51:36,983 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:51:36,986 INFO  L85        PathProgramCache]: Analyzing trace with hash 1703780912, now seen corresponding path program 1 times
[2022-12-13 17:51:36,986 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:51:36,986 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448969147]
[2022-12-13 17:51:36,987 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:51:36,987 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:51:38,591 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:52:11,163 INFO  L134       CoverageAnalysis]: Checked inductivity of 2888 backedges. 2885 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2022-12-13 17:52:11,163 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:52:11,163 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448969147]
[2022-12-13 17:52:11,164 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448969147] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:52:11,164 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:52:11,165 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 17:52:11,165 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937037559]
[2022-12-13 17:52:11,165 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:52:11,174 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:52:11,174 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:52:11,180 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:52:11,180 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:52:11,183 INFO  L87              Difference]: Start difference. First operand 30574 states and 45754 transitions. Second operand  has 3 states, 3 states have (on average 4342.0) internal successors, (13026), 2 states have internal predecessors, (13026), 0 states have call successors, (0), 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 17:52:41,798 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:52:41,798 INFO  L93              Difference]: Finished difference Result 71336 states and 116865 transitions.
[2022-12-13 17:52:41,799 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:52:41,801 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4342.0) internal successors, (13026), 2 states have internal predecessors, (13026), 0 states have call successors, (0), 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 13028
[2022-12-13 17:52:41,805 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:52:41,892 INFO  L225             Difference]: With dead ends: 71336
[2022-12-13 17:52:41,893 INFO  L226             Difference]: Without dead ends: 50954
[2022-12-13 17:52:41,906 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 17:52:41,907 INFO  L413           NwaCegarLoop]: 4817 mSDtfsCounter, 10972 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28700 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10972 SdHoareTripleChecker+Valid, 4866 SdHoareTripleChecker+Invalid, 40458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.1s IncrementalHoareTripleChecker+Time
[2022-12-13 17:52:41,907 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10972 Valid, 4866 Invalid, 40458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28700 Invalid, 0 Unknown, 0 Unchecked, 30.1s Time]
[2022-12-13 17:52:41,940 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50954 states.
[2022-12-13 17:52:42,424 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50954 to 50954.
[2022-12-13 17:52:42,446 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 50954 states, 50953 states have (on average 1.4546935411065098) internal successors, (74121), 50953 states have internal predecessors, (74121), 0 states have call successors, (0), 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 17:52:42,499 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50954 states to 50954 states and 74121 transitions.
[2022-12-13 17:52:42,499 INFO  L78                 Accepts]: Start accepts. Automaton has 50954 states and 74121 transitions. Word has length 13028
[2022-12-13 17:52:42,501 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:52:42,501 INFO  L495      AbstractCegarLoop]: Abstraction has 50954 states and 74121 transitions.
[2022-12-13 17:52:42,503 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4342.0) internal successors, (13026), 2 states have internal predecessors, (13026), 0 states have call successors, (0), 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 17:52:42,503 INFO  L276                IsEmpty]: Start isEmpty. Operand 50954 states and 74121 transitions.
[2022-12-13 17:52:43,443 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13030
[2022-12-13 17:52:43,443 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:52:43,447 INFO  L195           NwaCegarLoop]: trace histogram [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, 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[2022-12-13 17:52:43,447 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-12-13 17:52:43,447 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:52:43,448 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:52:43,450 INFO  L85        PathProgramCache]: Analyzing trace with hash 1342842322, now seen corresponding path program 1 times
[2022-12-13 17:52:43,450 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:52:43,450 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585985448]
[2022-12-13 17:52:43,451 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:52:43,451 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:52:44,920 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:53:33,323 INFO  L134       CoverageAnalysis]: Checked inductivity of 2890 backedges. 2890 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 17:53:33,324 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:53:33,324 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585985448]
[2022-12-13 17:53:33,324 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585985448] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:53:33,324 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:53:33,325 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 17:53:33,325 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190601819]
[2022-12-13 17:53:33,325 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:53:33,330 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:53:33,330 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:53:33,431 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:53:33,432 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:53:33,434 INFO  L87              Difference]: Start difference. First operand 50954 states and 74121 transitions. Second operand  has 3 states, 3 states have (on average 4343.0) internal successors, (13029), 3 states have internal predecessors, (13029), 0 states have call successors, (0), 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 17:54:01,019 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:54:01,019 INFO  L93              Difference]: Finished difference Result 112096 states and 166188 transitions.
[2022-12-13 17:54:01,020 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:54:01,021 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4343.0) internal successors, (13029), 3 states have internal predecessors, (13029), 0 states have call successors, (0), 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 13029
[2022-12-13 17:54:01,023 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:54:01,085 INFO  L225             Difference]: With dead ends: 112096
[2022-12-13 17:54:01,085 INFO  L226             Difference]: Without dead ends: 71334
[2022-12-13 17:54:01,108 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 17:54:01,110 INFO  L413           NwaCegarLoop]: 18209 mSDtfsCounter, 10210 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 33598 mSolverCounterSat, 3753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10210 SdHoareTripleChecker+Valid, 18260 SdHoareTripleChecker+Invalid, 37351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3753 IncrementalHoareTripleChecker+Valid, 33598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.9s IncrementalHoareTripleChecker+Time
[2022-12-13 17:54:01,110 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10210 Valid, 18260 Invalid, 37351 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3753 Valid, 33598 Invalid, 0 Unknown, 0 Unchecked, 26.9s Time]
[2022-12-13 17:54:01,151 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 71334 states.
[2022-12-13 17:54:01,668 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 71334 to 71334.
[2022-12-13 17:54:01,720 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 71334 states, 71333 states have (on average 1.4101607951439026) internal successors, (100591), 71333 states have internal predecessors, (100591), 0 states have call successors, (0), 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 17:54:01,868 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 71334 states to 71334 states and 100591 transitions.
[2022-12-13 17:54:01,868 INFO  L78                 Accepts]: Start accepts. Automaton has 71334 states and 100591 transitions. Word has length 13029
[2022-12-13 17:54:01,871 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:54:01,871 INFO  L495      AbstractCegarLoop]: Abstraction has 71334 states and 100591 transitions.
[2022-12-13 17:54:01,872 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4343.0) internal successors, (13029), 3 states have internal predecessors, (13029), 0 states have call successors, (0), 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 17:54:01,873 INFO  L276                IsEmpty]: Start isEmpty. Operand 71334 states and 100591 transitions.
[2022-12-13 17:54:02,819 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13036
[2022-12-13 17:54:02,820 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:54:02,823 INFO  L195           NwaCegarLoop]: trace histogram [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, 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[2022-12-13 17:54:02,823 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-12-13 17:54:02,823 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:54:02,824 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:54:02,826 INFO  L85        PathProgramCache]: Analyzing trace with hash 150604033, now seen corresponding path program 1 times
[2022-12-13 17:54:02,826 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:54:02,826 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689958719]
[2022-12-13 17:54:02,827 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:54:02,827 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:54:04,571 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:54:37,925 INFO  L134       CoverageAnalysis]: Checked inductivity of 2902 backedges. 2892 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2022-12-13 17:54:37,926 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:54:37,926 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689958719]
[2022-12-13 17:54:37,926 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689958719] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:54:37,926 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:54:37,928 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 17:54:37,928 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891877277]
[2022-12-13 17:54:37,929 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:54:37,938 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:54:37,938 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:54:37,945 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:54:37,945 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:54:37,948 INFO  L87              Difference]: Start difference. First operand 71334 states and 100591 transitions. Second operand  has 3 states, 3 states have (on average 4342.0) internal successors, (13026), 2 states have internal predecessors, (13026), 0 states have call successors, (0), 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 17:55:10,111 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:55:10,111 INFO  L93              Difference]: Finished difference Result 193616 states and 281376 transitions.
[2022-12-13 17:55:10,111 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:55:10,113 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4342.0) internal successors, (13026), 2 states have internal predecessors, (13026), 0 states have call successors, (0), 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 13035
[2022-12-13 17:55:10,114 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:55:10,217 INFO  L225             Difference]: With dead ends: 193616
[2022-12-13 17:55:10,217 INFO  L226             Difference]: Without dead ends: 132474
[2022-12-13 17:55:10,239 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 17:55:10,240 INFO  L413           NwaCegarLoop]: 6718 mSDtfsCounter, 10129 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27706 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10129 SdHoareTripleChecker+Valid, 6767 SdHoareTripleChecker+Invalid, 40736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.3s IncrementalHoareTripleChecker+Time
[2022-12-13 17:55:10,240 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10129 Valid, 6767 Invalid, 40736 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27706 Invalid, 0 Unknown, 0 Unchecked, 31.3s Time]
[2022-12-13 17:55:10,313 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 132474 states.
[2022-12-13 17:55:11,215 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 132474 to 132474.
[2022-12-13 17:55:11,299 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 132474 states, 132473 states have (on average 1.319838759596295) internal successors, (174843), 132473 states have internal predecessors, (174843), 0 states have call successors, (0), 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 17:55:11,442 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 132474 states to 132474 states and 174843 transitions.
[2022-12-13 17:55:11,443 INFO  L78                 Accepts]: Start accepts. Automaton has 132474 states and 174843 transitions. Word has length 13035
[2022-12-13 17:55:11,445 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:55:11,445 INFO  L495      AbstractCegarLoop]: Abstraction has 132474 states and 174843 transitions.
[2022-12-13 17:55:11,447 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4342.0) internal successors, (13026), 2 states have internal predecessors, (13026), 0 states have call successors, (0), 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 17:55:11,447 INFO  L276                IsEmpty]: Start isEmpty. Operand 132474 states and 174843 transitions.
[2022-12-13 17:55:12,651 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13046
[2022-12-13 17:55:12,651 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:55:12,656 INFO  L195           NwaCegarLoop]: trace histogram [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, 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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]
[2022-12-13 17:55:12,656 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-12-13 17:55:12,656 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:55:12,657 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:55:12,660 INFO  L85        PathProgramCache]: Analyzing trace with hash -1979479814, now seen corresponding path program 1 times
[2022-12-13 17:55:12,661 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:55:12,661 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288778183]
[2022-12-13 17:55:12,662 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:55:12,663 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:55:14,130 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:55:58,692 INFO  L134       CoverageAnalysis]: Checked inductivity of 2922 backedges. 2922 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 17:55:58,693 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:55:58,693 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288778183]
[2022-12-13 17:55:58,693 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288778183] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:55:58,693 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:55:58,694 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 17:55:58,694 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914869217]
[2022-12-13 17:55:58,694 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:55:58,791 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-13 17:55:58,792 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:55:58,797 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-13 17:55:58,797 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-13 17:55:58,800 INFO  L87              Difference]: Start difference. First operand 132474 states and 174843 transitions. Second operand  has 4 states, 4 states have (on average 3261.25) internal successors, (13045), 3 states have internal predecessors, (13045), 0 states have call successors, (0), 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 17:56:41,353 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:56:41,353 INFO  L93              Difference]: Finished difference Result 458556 states and 616640 transitions.
[2022-12-13 17:56:41,353 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-12-13 17:56:41,355 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3261.25) internal successors, (13045), 3 states have internal predecessors, (13045), 0 states have call successors, (0), 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 13045
[2022-12-13 17:56:41,356 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:56:41,734 INFO  L225             Difference]: With dead ends: 458556
[2022-12-13 17:56:41,734 INFO  L226             Difference]: Without dead ends: 336274
[2022-12-13 17:56:41,796 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 17:56:41,797 INFO  L413           NwaCegarLoop]: 5416 mSDtfsCounter, 29140 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 41001 mSolverCounterSat, 25779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29140 SdHoareTripleChecker+Valid, 5515 SdHoareTripleChecker+Invalid, 66780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25779 IncrementalHoareTripleChecker+Valid, 41001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.8s IncrementalHoareTripleChecker+Time
[2022-12-13 17:56:41,797 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [29140 Valid, 5515 Invalid, 66780 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25779 Valid, 41001 Invalid, 0 Unknown, 0 Unchecked, 40.8s Time]
[2022-12-13 17:56:42,002 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 336274 states.
[2022-12-13 17:56:44,327 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 336274 to 336274.
[2022-12-13 17:56:44,717 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 336274 states, 336273 states have (on average 1.2261257965997865) internal successors, (412313), 336273 states have internal predecessors, (412313), 0 states have call successors, (0), 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 17:56:45,081 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 336274 states to 336274 states and 412313 transitions.
[2022-12-13 17:56:45,081 INFO  L78                 Accepts]: Start accepts. Automaton has 336274 states and 412313 transitions. Word has length 13045
[2022-12-13 17:56:45,083 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:56:45,083 INFO  L495      AbstractCegarLoop]: Abstraction has 336274 states and 412313 transitions.
[2022-12-13 17:56:45,084 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3261.25) internal successors, (13045), 3 states have internal predecessors, (13045), 0 states have call successors, (0), 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 17:56:45,084 INFO  L276                IsEmpty]: Start isEmpty. Operand 336274 states and 412313 transitions.
[2022-12-13 17:56:46,498 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13140
[2022-12-13 17:56:46,499 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:56:46,505 INFO  L195           NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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[2022-12-13 17:56:46,505 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-12-13 17:56:46,506 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:56:46,506 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:56:46,510 INFO  L85        PathProgramCache]: Analyzing trace with hash 87907681, now seen corresponding path program 1 times
[2022-12-13 17:56:46,510 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:56:46,510 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480532616]
[2022-12-13 17:56:46,512 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:56:46,513 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:56:48,073 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:57:30,058 INFO  L134       CoverageAnalysis]: Checked inductivity of 3127 backedges. 3108 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2022-12-13 17:57:30,058 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:57:30,059 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480532616]
[2022-12-13 17:57:30,059 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480532616] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:57:30,059 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:57:30,060 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 17:57:30,060 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221144164]
[2022-12-13 17:57:30,060 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:57:30,064 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-13 17:57:30,064 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:57:30,069 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-13 17:57:30,069 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-13 17:57:30,072 INFO  L87              Difference]: Start difference. First operand 336274 states and 412313 transitions. Second operand  has 4 states, 4 states have (on average 3281.5) internal successors, (13126), 3 states have internal predecessors, (13126), 0 states have call successors, (0), 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 17:58:21,748 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:58:21,748 INFO  L93              Difference]: Finished difference Result 1069956 states and 1329050 transitions.
[2022-12-13 17:58:21,748 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-12-13 17:58:21,750 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3281.5) internal successors, (13126), 3 states have internal predecessors, (13126), 0 states have call successors, (0), 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 13139
[2022-12-13 17:58:21,751 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:58:22,554 INFO  L225             Difference]: With dead ends: 1069956
[2022-12-13 17:58:22,554 INFO  L226             Difference]: Without dead ends: 743874
[2022-12-13 17:58:22,687 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 17:58:22,688 INFO  L413           NwaCegarLoop]: 7953 mSDtfsCounter, 17790 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 58154 mSolverCounterSat, 17801 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17790 SdHoareTripleChecker+Valid, 8077 SdHoareTripleChecker+Invalid, 75955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 17801 IncrementalHoareTripleChecker+Valid, 58154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.3s IncrementalHoareTripleChecker+Time
[2022-12-13 17:58:22,688 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17790 Valid, 8077 Invalid, 75955 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [17801 Valid, 58154 Invalid, 0 Unknown, 0 Unchecked, 48.3s Time]
[2022-12-13 17:58:23,226 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 743874 states.
[2022-12-13 17:58:28,761 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 743874 to 743874.
[2022-12-13 17:58:29,025 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 743874 states, 743873 states have (on average 1.1708571221162751) internal successors, (870969), 743873 states have internal predecessors, (870969), 0 states have call successors, (0), 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 17:58:29,981 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 743874 states to 743874 states and 870969 transitions.
[2022-12-13 17:58:29,981 INFO  L78                 Accepts]: Start accepts. Automaton has 743874 states and 870969 transitions. Word has length 13139
[2022-12-13 17:58:29,982 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 17:58:29,982 INFO  L495      AbstractCegarLoop]: Abstraction has 743874 states and 870969 transitions.
[2022-12-13 17:58:29,984 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3281.5) internal successors, (13126), 3 states have internal predecessors, (13126), 0 states have call successors, (0), 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 17:58:29,984 INFO  L276                IsEmpty]: Start isEmpty. Operand 743874 states and 870969 transitions.
[2022-12-13 17:58:31,683 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13303
[2022-12-13 17:58:31,683 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 17:58:31,686 INFO  L195           NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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[2022-12-13 17:58:31,686 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-12-13 17:58:31,686 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 17:58:31,686 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 17:58:31,688 INFO  L85        PathProgramCache]: Analyzing trace with hash 1725594372, now seen corresponding path program 1 times
[2022-12-13 17:58:31,688 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 17:58:31,688 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850040783]
[2022-12-13 17:58:31,689 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 17:58:31,689 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 17:58:33,156 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 17:59:03,795 INFO  L134       CoverageAnalysis]: Checked inductivity of 3566 backedges. 3247 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked.
[2022-12-13 17:59:03,795 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 17:59:03,796 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850040783]
[2022-12-13 17:59:03,796 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850040783] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 17:59:03,796 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 17:59:03,797 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 17:59:03,797 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775862703]
[2022-12-13 17:59:03,797 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 17:59:03,801 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 17:59:03,801 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 17:59:03,807 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 17:59:03,807 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 17:59:03,810 INFO  L87              Difference]: Start difference. First operand 743874 states and 870969 transitions. Second operand  has 3 states, 3 states have (on average 4343.0) internal successors, (13029), 2 states have internal predecessors, (13029), 0 states have call successors, (0), 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 17:59:38,486 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 17:59:38,487 INFO  L93              Difference]: Finished difference Result 2211236 states and 2592510 transitions.
[2022-12-13 17:59:38,487 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 17:59:38,489 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4343.0) internal successors, (13029), 2 states have internal predecessors, (13029), 0 states have call successors, (0), 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 13302
[2022-12-13 17:59:38,491 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 17:59:40,368 INFO  L225             Difference]: With dead ends: 2211236
[2022-12-13 17:59:40,368 INFO  L226             Difference]: Without dead ends: 1477554
[2022-12-13 17:59:40,633 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 17:59:40,634 INFO  L413           NwaCegarLoop]: 6208 mSDtfsCounter, 9694 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30541 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9694 SdHoareTripleChecker+Valid, 6257 SdHoareTripleChecker+Invalid, 41042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 30541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.8s IncrementalHoareTripleChecker+Time
[2022-12-13 17:59:40,634 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9694 Valid, 6257 Invalid, 41042 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 30541 Invalid, 0 Unknown, 0 Unchecked, 28.8s Time]
[2022-12-13 17:59:41,683 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1477554 states.