./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-programs/Problem101_label18.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 839c364b
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af230009-fc2b-424b-bd1c-a2add1a771f9/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af230009-fc2b-424b-bd1c-a2add1a771f9/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af230009-fc2b-424b-bd1c-a2add1a771f9/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af230009-fc2b-424b-bd1c-a2add1a771f9/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-programs/Problem101_label18.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af230009-fc2b-424b-bd1c-a2add1a771f9/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af230009-fc2b-424b-bd1c-a2add1a771f9/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bbe47816d21814cecc28edf41bcaee3da0605cb4347844a80c5eaf67e6d04efe
--- Real Ultimate output ---
This is Ultimate 0.2.2-hotfix-svcomp22-839c364
[2021-12-06 19:59:01,807 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-12-06 19:59:01,808 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-06 19:59:01,838 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-06 19:59:01,838 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-06 19:59:01,840 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-06 19:59:01,841 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-06 19:59:01,844 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-06 19:59:01,846 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-06 19:59:01,847 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-06 19:59:01,847 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-12-06 19:59:01,849 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-06 19:59:01,849 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-06 19:59:01,850 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-06 19:59:01,852 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-06 19:59:01,854 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-06 19:59:01,855 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-06 19:59:01,856 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-06 19:59:01,858 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-06 19:59:01,860 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-06 19:59:01,862 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-06 19:59:01,864 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-06 19:59:01,865 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-12-06 19:59:01,866 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-06 19:59:01,870 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-06 19:59:01,870 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-06 19:59:01,870 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-06 19:59:01,871 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-06 19:59:01,872 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-06 19:59:01,873 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-06 19:59:01,873 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-06 19:59:01,874 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-06 19:59:01,875 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-06 19:59:01,876 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-06 19:59:01,877 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-06 19:59:01,877 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-06 19:59:01,878 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-06 19:59:01,878 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-06 19:59:01,878 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-06 19:59:01,879 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-06 19:59:01,880 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-12-06 19:59:01,880 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af230009-fc2b-424b-bd1c-a2add1a771f9/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-06 19:59:01,902 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-12-06 19:59:01,903 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-06 19:59:01,903 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-06 19:59:01,903 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-06 19:59:01,904 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-06 19:59:01,904 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-06 19:59:01,905 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-06 19:59:01,905 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-12-06 19:59:01,905 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-12-06 19:59:01,905 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-06 19:59:01,906 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-12-06 19:59:01,906 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-12-06 19:59:01,906 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-12-06 19:59:01,906 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-12-06 19:59:01,906 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-12-06 19:59:01,906 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-06 19:59:01,907 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-12-06 19:59:01,907 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-12-06 19:59:01,907 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-12-06 19:59:01,907 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-12-06 19:59:01,907 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-12-06 19:59:01,908 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-06 19:59:01,908 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-12-06 19:59:01,908 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-12-06 19:59:01,908 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 19:59:01,908 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-06 19:59:01,908 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-12-06 19:59:01,909 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-06 19:59:01,909 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-12-06 19:59:01,909 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-06 19:59:01,909 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-12-06 19:59:01,909 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-06 19:59:01,909 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-06 19:59:01,910 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-12-06 19:59:01,910 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af230009-fc2b-424b-bd1c-a2add1a771f9/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af230009-fc2b-424b-bd1c-a2add1a771f9/bin/uautomizer-DrprNOufMa
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbe47816d21814cecc28edf41bcaee3da0605cb4347844a80c5eaf67e6d04efe
[2021-12-06 19:59:02,089 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-06 19:59:02,104 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-06 19:59:02,106 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-06 19:59:02,107 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-12-06 19:59:02,107 INFO  L275        PluginConnector]: CDTParser initialized
[2021-12-06 19:59:02,108 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af230009-fc2b-424b-bd1c-a2add1a771f9/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-programs/Problem101_label18.c
[2021-12-06 19:59:02,151 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af230009-fc2b-424b-bd1c-a2add1a771f9/bin/uautomizer-DrprNOufMa/data/1f989e365/793e063bcb99492086f9b457b532c465/FLAG096d95c57
[2021-12-06 19:59:03,429 INFO  L306              CDTParser]: Found 1 translation units.
[2021-12-06 19:59:03,430 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af230009-fc2b-424b-bd1c-a2add1a771f9/sv-benchmarks/c/eca-programs/Problem101_label18.c
[2021-12-06 19:59:03,567 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af230009-fc2b-424b-bd1c-a2add1a771f9/bin/uautomizer-DrprNOufMa/data/1f989e365/793e063bcb99492086f9b457b532c465/FLAG096d95c57
[2021-12-06 19:59:03,699 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af230009-fc2b-424b-bd1c-a2add1a771f9/bin/uautomizer-DrprNOufMa/data/1f989e365/793e063bcb99492086f9b457b532c465
[2021-12-06 19:59:03,705 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-06 19:59:03,707 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-06 19:59:03,709 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-06 19:59:03,710 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-06 19:59:03,714 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-06 19:59:03,715 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:59:03" (1/1) ...
[2021-12-06 19:59:03,716 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2137217f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:03, skipping insertion in model container
[2021-12-06 19:59:03,716 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:59:03" (1/1) ...
[2021-12-06 19:59:03,722 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-12-06 19:59:04,293 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-12-06 19:59:14,013 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af230009-fc2b-424b-bd1c-a2add1a771f9/sv-benchmarks/c/eca-programs/Problem101_label18.c[2768332,2768345]
[2021-12-06 19:59:14,076 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 19:59:14,084 INFO  L203         MainTranslator]: Completed pre-run
[2021-12-06 19:59:20,132 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af230009-fc2b-424b-bd1c-a2add1a771f9/sv-benchmarks/c/eca-programs/Problem101_label18.c[2768332,2768345]
[2021-12-06 19:59:20,143 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 19:59:20,805 INFO  L208         MainTranslator]: Completed translation
[2021-12-06 19:59:20,805 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:20 WrapperNode
[2021-12-06 19:59:20,805 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-06 19:59:20,806 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-06 19:59:20,806 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-06 19:59:20,806 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-06 19:59:20,811 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:20" (1/1) ...
[2021-12-06 19:59:21,105 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:20" (1/1) ...
[2021-12-06 19:59:22,222 INFO  L137                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83780
[2021-12-06 19:59:22,223 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-06 19:59:22,223 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-06 19:59:22,223 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-06 19:59:22,224 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-12-06 19:59:22,231 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:20" (1/1) ...
[2021-12-06 19:59:22,231 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:20" (1/1) ...
[2021-12-06 19:59:22,453 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:20" (1/1) ...
[2021-12-06 19:59:22,453 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:20" (1/1) ...
[2021-12-06 19:59:22,990 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:20" (1/1) ...
[2021-12-06 19:59:23,106 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:20" (1/1) ...
[2021-12-06 19:59:23,220 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:20" (1/1) ...
[2021-12-06 19:59:23,507 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-06 19:59:23,508 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-06 19:59:23,508 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-12-06 19:59:23,508 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-12-06 19:59:23,509 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:20" (1/1) ...
[2021-12-06 19:59:23,515 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 19:59:23,523 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af230009-fc2b-424b-bd1c-a2add1a771f9/bin/uautomizer-DrprNOufMa/z3
[2021-12-06 19:59:23,533 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af230009-fc2b-424b-bd1c-a2add1a771f9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-12-06 19:59:23,535 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af230009-fc2b-424b-bd1c-a2add1a771f9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-12-06 19:59:23,561 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-06 19:59:23,561 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-06 19:59:23,561 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-06 19:59:23,561 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-06 19:59:23,656 INFO  L236             CfgBuilder]: Building ICFG
[2021-12-06 19:59:23,657 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-06 19:59:47,371 INFO  L277             CfgBuilder]: Performing block encoding
[2021-12-06 19:59:47,428 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-06 19:59:47,428 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-06 19:59:47,437 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:59:47 BoogieIcfgContainer
[2021-12-06 19:59:47,437 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-06 19:59:47,439 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-06 19:59:47,439 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-12-06 19:59:47,441 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-12-06 19:59:47,441 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:59:03" (1/3) ...
[2021-12-06 19:59:47,442 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4feb86ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:59:47, skipping insertion in model container
[2021-12-06 19:59:47,442 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:59:20" (2/3) ...
[2021-12-06 19:59:47,442 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4feb86ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:59:47, skipping insertion in model container
[2021-12-06 19:59:47,442 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:59:47" (3/3) ...
[2021-12-06 19:59:47,443 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem101_label18.c
[2021-12-06 19:59:47,447 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-06 19:59:47,447 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-06 19:59:47,502 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-06 19:59:47,507 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-12-06 19:59:47,508 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-06 19:59:47,623 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:59:48,366 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10098
[2021-12-06 19:59:48,366 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:59:48,372 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 19:59:48,375 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:59:48,382 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:59:48,387 INFO  L85        PathProgramCache]: Analyzing trace with hash 1291161481, now seen corresponding path program 1 times
[2021-12-06 19:59:48,394 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:59:48,394 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020318191]
[2021-12-06 19:59:48,397 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:59:48,397 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:59:50,087 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:00:09,227 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 20:00:09,228 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:00:09,228 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020318191]
[2021-12-06 20:00:09,229 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020318191] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:00:09,229 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:00:09,231 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 20:00:09,233 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929404423]
[2021-12-06 20:00:09,233 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:00:09,247 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:00:09,248 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:00:09,266 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:00:09,267 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:00:09,289 INFO  L87              Difference]: Start difference. First operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 3365.6666666666665) internal successors, (10097), 2 states have internal predecessors, (10097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:00:32,879 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:00:32,879 INFO  L93              Difference]: Finished difference Result 30705 states and 61134 transitions.
[2021-12-06 20:00:32,880 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:00:32,884 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3365.6666666666665) internal successors, (10097), 2 states have internal predecessors, (10097), 0 states have call successors, (0), 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 10097
[2021-12-06 20:00:32,900 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:00:32,999 INFO  L225             Difference]: With dead ends: 30705
[2021-12-06 20:00:32,999 INFO  L226             Difference]: Without dead ends: 20384
[2021-12-06 20:00:33,013 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:00:33,016 INFO  L933         BasicCegarLoop]: 7753 mSDtfsCounter, 411 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 31165 mSolverCounterSat, 9560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 7806 SdHoareTripleChecker+Invalid, 40725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9560 IncrementalHoareTripleChecker+Valid, 31165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time
[2021-12-06 20:00:33,017 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 7806 Invalid, 40725 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9560 Valid, 31165 Invalid, 0 Unknown, 0 Unchecked, 23.1s Time]
[2021-12-06 20:00:33,053 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20384 states.
[2021-12-06 20:00:33,403 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20384 to 20384.
[2021-12-06 20:00:33,430 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20384 states, 20383 states have (on average 1.6155619879311192) internal successors, (32930), 20383 states have internal predecessors, (32930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:00:33,476 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20384 states to 20384 states and 32930 transitions.
[2021-12-06 20:00:33,477 INFO  L78                 Accepts]: Start accepts. Automaton has 20384 states and 32930 transitions. Word has length 10097
[2021-12-06 20:00:33,489 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:00:33,489 INFO  L470      AbstractCegarLoop]: Abstraction has 20384 states and 32930 transitions.
[2021-12-06 20:00:33,491 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3365.6666666666665) internal successors, (10097), 2 states have internal predecessors, (10097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:00:33,491 INFO  L276                IsEmpty]: Start isEmpty. Operand 20384 states and 32930 transitions.
[2021-12-06 20:00:34,093 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10102
[2021-12-06 20:00:34,094 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:00:34,098 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 20:00:34,099 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-06 20:00:34,099 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:00:34,100 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:00:34,105 INFO  L85        PathProgramCache]: Analyzing trace with hash 1112616545, now seen corresponding path program 1 times
[2021-12-06 20:00:34,105 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:00:34,106 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601500441]
[2021-12-06 20:00:34,108 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:00:34,108 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:00:34,887 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:00:51,252 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 20:00:51,252 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:00:51,252 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601500441]
[2021-12-06 20:00:51,252 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601500441] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:00:51,252 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:00:51,254 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 20:00:51,254 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21372283]
[2021-12-06 20:00:51,254 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:00:51,265 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:00:51,266 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:00:51,266 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:00:51,266 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:00:51,269 INFO  L87              Difference]: Start difference. First operand 20384 states and 32930 transitions. Second operand  has 3 states, 3 states have (on average 3367.0) internal successors, (10101), 2 states have internal predecessors, (10101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:01:15,755 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:01:15,755 INFO  L93              Difference]: Finished difference Result 61146 states and 98785 transitions.
[2021-12-06 20:01:15,755 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:01:15,757 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3367.0) internal successors, (10101), 2 states have internal predecessors, (10101), 0 states have call successors, (0), 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 10101
[2021-12-06 20:01:15,757 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:01:15,832 INFO  L225             Difference]: With dead ends: 61146
[2021-12-06 20:01:15,832 INFO  L226             Difference]: Without dead ends: 40764
[2021-12-06 20:01:15,850 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:01:15,852 INFO  L933         BasicCegarLoop]: 8838 mSDtfsCounter, 11137 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29966 mSolverCounterSat, 11743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11137 SdHoareTripleChecker+Valid, 8887 SdHoareTripleChecker+Invalid, 41709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11743 IncrementalHoareTripleChecker+Valid, 29966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time
[2021-12-06 20:01:15,852 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [11137 Valid, 8887 Invalid, 41709 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11743 Valid, 29966 Invalid, 0 Unknown, 0 Unchecked, 24.0s Time]
[2021-12-06 20:01:15,896 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40764 states.
[2021-12-06 20:01:16,245 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 40764.
[2021-12-06 20:01:16,276 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40764 states, 40763 states have (on average 1.470328484164561) internal successors, (59935), 40763 states have internal predecessors, (59935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:01:16,330 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40764 states to 40764 states and 59935 transitions.
[2021-12-06 20:01:16,330 INFO  L78                 Accepts]: Start accepts. Automaton has 40764 states and 59935 transitions. Word has length 10101
[2021-12-06 20:01:16,332 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:01:16,332 INFO  L470      AbstractCegarLoop]: Abstraction has 40764 states and 59935 transitions.
[2021-12-06 20:01:16,334 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3367.0) internal successors, (10101), 2 states have internal predecessors, (10101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:01:16,334 INFO  L276                IsEmpty]: Start isEmpty. Operand 40764 states and 59935 transitions.
[2021-12-06 20:01:16,930 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10105
[2021-12-06 20:01:16,930 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:01:16,935 INFO  L514         BasicCegarLoop]: trace histogram [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, 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[2021-12-06 20:01:16,935 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-06 20:01:16,935 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:01:16,936 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:01:16,938 INFO  L85        PathProgramCache]: Analyzing trace with hash 460183910, now seen corresponding path program 1 times
[2021-12-06 20:01:16,939 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:01:16,939 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086500581]
[2021-12-06 20:01:16,940 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:01:16,940 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:01:17,799 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:01:33,609 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 20:01:33,609 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:01:33,609 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086500581]
[2021-12-06 20:01:33,609 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086500581] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:01:33,610 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:01:33,611 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 20:01:33,611 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284641571]
[2021-12-06 20:01:33,611 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:01:33,617 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:01:33,617 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:01:33,618 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:01:33,618 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:01:33,620 INFO  L87              Difference]: Start difference. First operand 40764 states and 59935 transitions. Second operand  has 3 states, 3 states have (on average 3368.0) internal successors, (10104), 2 states have internal predecessors, (10104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:01:57,702 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:01:57,702 INFO  L93              Difference]: Finished difference Result 122286 states and 179800 transitions.
[2021-12-06 20:01:57,702 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:01:57,703 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3368.0) internal successors, (10104), 2 states have internal predecessors, (10104), 0 states have call successors, (0), 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 10104
[2021-12-06 20:01:57,703 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:01:57,778 INFO  L225             Difference]: With dead ends: 122286
[2021-12-06 20:01:57,778 INFO  L226             Difference]: Without dead ends: 81524
[2021-12-06 20:01:57,804 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:01:57,805 INFO  L933         BasicCegarLoop]: 9447 mSDtfsCounter, 10617 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 31303 mSolverCounterSat, 10928 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10617 SdHoareTripleChecker+Valid, 9497 SdHoareTripleChecker+Invalid, 42231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10928 IncrementalHoareTripleChecker+Valid, 31303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time
[2021-12-06 20:01:57,805 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10617 Valid, 9497 Invalid, 42231 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10928 Valid, 31303 Invalid, 0 Unknown, 0 Unchecked, 23.5s Time]
[2021-12-06 20:01:57,850 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81524 states.
[2021-12-06 20:01:58,359 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81524 to 81524.
[2021-12-06 20:01:58,413 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81524 states, 81523 states have (on average 1.359334175631417) internal successors, (110817), 81523 states have internal predecessors, (110817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:01:58,512 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81524 states to 81524 states and 110817 transitions.
[2021-12-06 20:01:58,512 INFO  L78                 Accepts]: Start accepts. Automaton has 81524 states and 110817 transitions. Word has length 10104
[2021-12-06 20:01:58,513 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:01:58,514 INFO  L470      AbstractCegarLoop]: Abstraction has 81524 states and 110817 transitions.
[2021-12-06 20:01:58,515 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3368.0) internal successors, (10104), 2 states have internal predecessors, (10104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:01:58,515 INFO  L276                IsEmpty]: Start isEmpty. Operand 81524 states and 110817 transitions.
[2021-12-06 20:01:59,237 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10135
[2021-12-06 20:01:59,237 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:01:59,242 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2021-12-06 20:01:59,242 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-12-06 20:01:59,243 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:01:59,243 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:01:59,246 INFO  L85        PathProgramCache]: Analyzing trace with hash 1626027281, now seen corresponding path program 1 times
[2021-12-06 20:01:59,246 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:01:59,246 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086684081]
[2021-12-06 20:01:59,247 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:01:59,248 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:02:00,019 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:02:14,374 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 20:02:14,374 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:02:14,374 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086684081]
[2021-12-06 20:02:14,374 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086684081] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:02:14,374 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:02:14,376 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 20:02:14,376 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816850675]
[2021-12-06 20:02:14,376 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:02:14,382 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:02:14,382 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:02:14,382 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:02:14,382 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:02:14,384 INFO  L87              Difference]: Start difference. First operand 81524 states and 110817 transitions. Second operand  has 3 states, 3 states have (on average 3378.0) internal successors, (10134), 2 states have internal predecessors, (10134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:02:38,648 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:02:38,648 INFO  L93              Difference]: Finished difference Result 244566 states and 332446 transitions.
[2021-12-06 20:02:38,648 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:02:38,649 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3378.0) internal successors, (10134), 2 states have internal predecessors, (10134), 0 states have call successors, (0), 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 10134
[2021-12-06 20:02:38,650 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:02:38,931 INFO  L225             Difference]: With dead ends: 244566
[2021-12-06 20:02:38,931 INFO  L226             Difference]: Without dead ends: 163044
[2021-12-06 20:02:38,970 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:02:38,971 INFO  L933         BasicCegarLoop]: 6564 mSDtfsCounter, 13102 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27663 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13102 SdHoareTripleChecker+Valid, 6613 SdHoareTripleChecker+Invalid, 40693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time
[2021-12-06 20:02:38,971 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13102 Valid, 6613 Invalid, 40693 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27663 Invalid, 0 Unknown, 0 Unchecked, 23.4s Time]
[2021-12-06 20:02:39,067 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 163044 states.
[2021-12-06 20:02:40,208 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 163044 to 163044.
[2021-12-06 20:02:40,310 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163044 states, 163043 states have (on average 1.257993290113651) internal successors, (205107), 163043 states have internal predecessors, (205107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:02:40,513 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163044 states to 163044 states and 205107 transitions.
[2021-12-06 20:02:40,513 INFO  L78                 Accepts]: Start accepts. Automaton has 163044 states and 205107 transitions. Word has length 10134
[2021-12-06 20:02:40,514 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:02:40,515 INFO  L470      AbstractCegarLoop]: Abstraction has 163044 states and 205107 transitions.
[2021-12-06 20:02:40,516 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3378.0) internal successors, (10134), 2 states have internal predecessors, (10134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:02:40,516 INFO  L276                IsEmpty]: Start isEmpty. Operand 163044 states and 205107 transitions.
[2021-12-06 20:02:41,483 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10215
[2021-12-06 20:02:41,483 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:02:41,488 INFO  L514         BasicCegarLoop]: 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, 2, 2, 2, 2, 2, 2, 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, 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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]
[2021-12-06 20:02:41,488 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-12-06 20:02:41,489 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:02:41,489 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:02:41,492 INFO  L85        PathProgramCache]: Analyzing trace with hash -628237073, now seen corresponding path program 1 times
[2021-12-06 20:02:41,492 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:02:41,492 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400618143]
[2021-12-06 20:02:41,494 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:02:41,494 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:02:42,498 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:02:57,271 INFO  L134       CoverageAnalysis]: Checked inductivity of 159 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked.
[2021-12-06 20:02:57,271 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:02:57,271 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400618143]
[2021-12-06 20:02:57,271 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400618143] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:02:57,272 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:02:57,273 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 20:02:57,273 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951165563]
[2021-12-06 20:02:57,273 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:02:57,281 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:02:57,282 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:02:57,282 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:02:57,282 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:02:57,284 INFO  L87              Difference]: Start difference. First operand 163044 states and 205107 transitions. Second operand  has 3 states, 3 states have (on average 3380.6666666666665) internal successors, (10142), 2 states have internal predecessors, (10142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:03:22,517 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:03:22,517 INFO  L93              Difference]: Finished difference Result 489126 states and 615316 transitions.
[2021-12-06 20:03:22,517 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:03:22,518 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3380.6666666666665) internal successors, (10142), 2 states have internal predecessors, (10142), 0 states have call successors, (0), 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 10214
[2021-12-06 20:03:22,518 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:03:22,871 INFO  L225             Difference]: With dead ends: 489126
[2021-12-06 20:03:22,871 INFO  L226             Difference]: Without dead ends: 326084
[2021-12-06 20:03:22,942 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:03:22,943 INFO  L933         BasicCegarLoop]: 6020 mSDtfsCounter, 12828 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29205 mSolverCounterSat, 11670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12828 SdHoareTripleChecker+Valid, 6069 SdHoareTripleChecker+Invalid, 40875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11670 IncrementalHoareTripleChecker+Valid, 29205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time
[2021-12-06 20:03:22,943 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12828 Valid, 6069 Invalid, 40875 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11670 Valid, 29205 Invalid, 0 Unknown, 0 Unchecked, 23.8s Time]
[2021-12-06 20:03:23,207 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 326084 states.
[2021-12-06 20:03:25,409 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 326084 to 326084.
[2021-12-06 20:03:25,605 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 326084 states, 326083 states have (on average 1.1961525133171615) internal successors, (390045), 326083 states have internal predecessors, (390045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:03:26,026 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 326084 states to 326084 states and 390045 transitions.
[2021-12-06 20:03:26,027 INFO  L78                 Accepts]: Start accepts. Automaton has 326084 states and 390045 transitions. Word has length 10214
[2021-12-06 20:03:26,028 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:03:26,028 INFO  L470      AbstractCegarLoop]: Abstraction has 326084 states and 390045 transitions.
[2021-12-06 20:03:26,030 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3380.6666666666665) internal successors, (10142), 2 states have internal predecessors, (10142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:03:26,030 INFO  L276                IsEmpty]: Start isEmpty. Operand 326084 states and 390045 transitions.
[2021-12-06 20:03:27,342 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10285
[2021-12-06 20:03:27,342 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:03:27,346 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 20:03:27,346 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-12-06 20:03:27,346 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:03:27,347 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:03:27,349 INFO  L85        PathProgramCache]: Analyzing trace with hash -2103323800, now seen corresponding path program 1 times
[2021-12-06 20:03:27,350 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:03:27,350 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97133863]
[2021-12-06 20:03:27,350 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:03:27,351 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:03:28,150 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:03:43,958 INFO  L134       CoverageAnalysis]: Checked inductivity of 186 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 20:03:43,958 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:03:43,958 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97133863]
[2021-12-06 20:03:43,958 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97133863] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:03:43,958 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:03:43,960 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 20:03:43,960 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429545402]
[2021-12-06 20:03:43,960 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:03:43,966 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:03:43,966 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:03:43,966 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:03:43,966 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:03:43,968 INFO  L87              Difference]: Start difference. First operand 326084 states and 390045 transitions. Second operand  has 3 states, 3 states have (on average 3428.0) internal successors, (10284), 2 states have internal predecessors, (10284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:04:10,461 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:04:10,461 INFO  L93              Difference]: Finished difference Result 978246 states and 1170130 transitions.
[2021-12-06 20:04:10,462 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:04:10,463 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3428.0) internal successors, (10284), 2 states have internal predecessors, (10284), 0 states have call successors, (0), 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 10284
[2021-12-06 20:04:10,463 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:04:11,235 INFO  L225             Difference]: With dead ends: 978246
[2021-12-06 20:04:11,235 INFO  L226             Difference]: Without dead ends: 652164
[2021-12-06 20:04:11,367 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:04:11,368 INFO  L933         BasicCegarLoop]: 9000 mSDtfsCounter, 10749 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 31677 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10749 SdHoareTripleChecker+Valid, 9049 SdHoareTripleChecker+Invalid, 42178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 31677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time
[2021-12-06 20:04:11,368 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10749 Valid, 9049 Invalid, 42178 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [10501 Valid, 31677 Invalid, 0 Unknown, 0 Unchecked, 23.8s Time]
[2021-12-06 20:04:11,885 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 652164 states.
[2021-12-06 20:04:16,528 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 652164 to 652164.
[2021-12-06 20:04:16,963 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 652164 states, 652163 states have (on average 1.14939823326377) internal successors, (749595), 652163 states have internal predecessors, (749595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:04:17,959 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 652164 states to 652164 states and 749595 transitions.
[2021-12-06 20:04:17,959 INFO  L78                 Accepts]: Start accepts. Automaton has 652164 states and 749595 transitions. Word has length 10284
[2021-12-06 20:04:17,959 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:04:17,960 INFO  L470      AbstractCegarLoop]: Abstraction has 652164 states and 749595 transitions.
[2021-12-06 20:04:17,961 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3428.0) internal successors, (10284), 2 states have internal predecessors, (10284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:04:17,961 INFO  L276                IsEmpty]: Start isEmpty. Operand 652164 states and 749595 transitions.
[2021-12-06 20:04:19,394 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10654
[2021-12-06 20:04:19,394 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:04:19,397 INFO  L514         BasicCegarLoop]: 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2021-12-06 20:04:19,397 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-12-06 20:04:19,398 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:04:19,398 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:04:19,400 INFO  L85        PathProgramCache]: Analyzing trace with hash 1471447888, now seen corresponding path program 1 times
[2021-12-06 20:04:19,400 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:04:19,400 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313330785]
[2021-12-06 20:04:19,401 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:04:19,401 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:04:20,224 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:04:35,890 INFO  L134       CoverageAnalysis]: Checked inductivity of 636 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2021-12-06 20:04:35,891 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:04:35,891 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313330785]
[2021-12-06 20:04:35,891 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313330785] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:04:35,891 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:04:35,892 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 20:04:35,892 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770451076]
[2021-12-06 20:04:35,893 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:04:35,897 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:04:35,897 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:04:35,897 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:04:35,897 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:04:35,899 INFO  L87              Difference]: Start difference. First operand 652164 states and 749595 transitions. Second operand  has 3 states, 3 states have (on average 3523.3333333333335) internal successors, (10570), 2 states have internal predecessors, (10570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:05:04,044 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:05:04,044 INFO  L93              Difference]: Finished difference Result 1956486 states and 2248780 transitions.
[2021-12-06 20:05:04,045 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:05:04,046 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3523.3333333333335) internal successors, (10570), 2 states have internal predecessors, (10570), 0 states have call successors, (0), 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 10653
[2021-12-06 20:05:04,047 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:05:05,677 INFO  L225             Difference]: With dead ends: 1956486
[2021-12-06 20:05:05,677 INFO  L226             Difference]: Without dead ends: 1304324
[2021-12-06 20:05:05,888 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:05:05,889 INFO  L933         BasicCegarLoop]: 6002 mSDtfsCounter, 12123 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29861 mSolverCounterSat, 11034 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12123 SdHoareTripleChecker+Valid, 6051 SdHoareTripleChecker+Invalid, 40895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11034 IncrementalHoareTripleChecker+Valid, 29861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time
[2021-12-06 20:05:05,889 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12123 Valid, 6051 Invalid, 40895 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11034 Valid, 29861 Invalid, 0 Unknown, 0 Unchecked, 23.6s Time]
[2021-12-06 20:05:06,940 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1304324 states.
[2021-12-06 20:05:16,657 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304324 to 1304324.
[2021-12-06 20:05:17,125 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1304324 states, 1304323 states have (on average 1.1113282522810684) internal successors, (1449531), 1304323 states have internal predecessors, (1449531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:05:19,244 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1304324 states to 1304324 states and 1449531 transitions.
[2021-12-06 20:05:19,244 INFO  L78                 Accepts]: Start accepts. Automaton has 1304324 states and 1449531 transitions. Word has length 10653
[2021-12-06 20:05:19,245 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:05:19,245 INFO  L470      AbstractCegarLoop]: Abstraction has 1304324 states and 1449531 transitions.
[2021-12-06 20:05:19,246 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3523.3333333333335) internal successors, (10570), 2 states have internal predecessors, (10570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:05:19,246 INFO  L276                IsEmpty]: Start isEmpty. Operand 1304324 states and 1449531 transitions.
[2021-12-06 20:05:21,358 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11143
[2021-12-06 20:05:21,359 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 20:05:21,361 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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[2021-12-06 20:05:21,361 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-12-06 20:05:21,362 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 20:05:21,362 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 20:05:21,363 INFO  L85        PathProgramCache]: Analyzing trace with hash 1334923015, now seen corresponding path program 1 times
[2021-12-06 20:05:21,363 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 20:05:21,363 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579895092]
[2021-12-06 20:05:21,364 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 20:05:21,364 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 20:05:22,265 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 20:05:39,694 INFO  L134       CoverageAnalysis]: Checked inductivity of 1355 backedges. 1038 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked.
[2021-12-06 20:05:39,694 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 20:05:39,694 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579895092]
[2021-12-06 20:05:39,694 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579895092] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 20:05:39,694 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 20:05:39,695 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 20:05:39,696 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952302659]
[2021-12-06 20:05:39,696 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 20:05:39,700 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 20:05:39,700 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 20:05:39,700 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 20:05:39,700 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:05:39,702 INFO  L87              Difference]: Start difference. First operand 1304324 states and 1449531 transitions. Second operand  has 3 states, 3 states have (on average 3622.6666666666665) internal successors, (10868), 2 states have internal predecessors, (10868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:06:14,101 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 20:06:14,101 INFO  L93              Difference]: Finished difference Result 3882396 states and 4314730 transitions.
[2021-12-06 20:06:14,102 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 20:06:14,103 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3622.6666666666665) internal successors, (10868), 2 states have internal predecessors, (10868), 0 states have call successors, (0), 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 11142
[2021-12-06 20:06:14,104 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 20:06:17,464 INFO  L225             Difference]: With dead ends: 3882396
[2021-12-06 20:06:17,464 INFO  L226             Difference]: Without dead ends: 2578074
[2021-12-06 20:06:18,163 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 20:06:18,164 INFO  L933         BasicCegarLoop]: 5909 mSDtfsCounter, 9682 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 31792 mSolverCounterSat, 11564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9682 SdHoareTripleChecker+Valid, 5959 SdHoareTripleChecker+Invalid, 43356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11564 IncrementalHoareTripleChecker+Valid, 31792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time
[2021-12-06 20:06:18,164 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [9682 Valid, 5959 Invalid, 43356 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11564 Valid, 31792 Invalid, 0 Unknown, 0 Unchecked, 25.6s Time]
[2021-12-06 20:06:20,172 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2578074 states.
[2021-12-06 20:06:38,966 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2578074 to 2578074.
[2021-12-06 20:06:39,913 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2578074 states, 2578073 states have (on average 1.0904613639722383) internal successors, (2811289), 2578073 states have internal predecessors, (2811289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:06:44,460 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2578074 states to 2578074 states and 2811289 transitions.
[2021-12-06 20:06:44,460 INFO  L78                 Accepts]: Start accepts. Automaton has 2578074 states and 2811289 transitions. Word has length 11142
[2021-12-06 20:06:44,461 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 20:06:44,461 INFO  L470      AbstractCegarLoop]: Abstraction has 2578074 states and 2811289 transitions.
[2021-12-06 20:06:44,463 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3622.6666666666665) internal successors, (10868), 2 states have internal predecessors, (10868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 20:06:44,463 INFO  L276                IsEmpty]: Start isEmpty. Operand 2578074 states and 2811289 transitions.