./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem05_label29.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version aef121e0
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e9ba79-1faf-4a90-a6f9-998efa499463/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e9ba79-1faf-4a90-a6f9-998efa499463/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e9ba79-1faf-4a90-a6f9-998efa499463/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e9ba79-1faf-4a90-a6f9-998efa499463/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem05_label29.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e9ba79-1faf-4a90-a6f9-998efa499463/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e9ba79-1faf-4a90-a6f9-998efa499463/bin/uautomizer-w2VwFs6gM0 --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 65ffec563eda24ea17e12fef14a53035d352d4fcf64600c3fa596f1fdab830a3
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-aef121e
[2021-11-22 15:07:46,527 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-11-22 15:07:46,529 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-22 15:07:46,581 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-22 15:07:46,582 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-22 15:07:46,584 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-22 15:07:46,587 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-22 15:07:46,590 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-22 15:07:46,593 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-22 15:07:46,595 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-22 15:07:46,597 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-11-22 15:07:46,599 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-22 15:07:46,600 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-22 15:07:46,602 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-22 15:07:46,604 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-22 15:07:46,606 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-22 15:07:46,608 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-22 15:07:46,610 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-22 15:07:46,613 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-22 15:07:46,616 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-22 15:07:46,620 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-22 15:07:46,622 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-22 15:07:46,624 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-11-22 15:07:46,625 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-22 15:07:46,630 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-22 15:07:46,631 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-22 15:07:46,631 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-22 15:07:46,633 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-22 15:07:46,633 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-22 15:07:46,635 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-22 15:07:46,636 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-22 15:07:46,637 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-22 15:07:46,639 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-22 15:07:46,640 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-22 15:07:46,642 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-22 15:07:46,643 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-22 15:07:46,644 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-22 15:07:46,645 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-22 15:07:46,645 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-22 15:07:46,647 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-22 15:07:46,648 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-11-22 15:07:46,650 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e9ba79-1faf-4a90-a6f9-998efa499463/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-11-22 15:07:46,682 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-11-22 15:07:46,682 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-22 15:07:46,683 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-22 15:07:46,684 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-22 15:07:46,688 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-22 15:07:46,689 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-11-22 15:07:46,689 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-11-22 15:07:46,690 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-22 15:07:46,690 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-11-22 15:07:46,691 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-11-22 15:07:46,691 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-11-22 15:07:46,691 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-11-22 15:07:46,692 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-11-22 15:07:46,692 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-22 15:07:46,693 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-11-22 15:07:46,693 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-11-22 15:07:46,693 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-11-22 15:07:46,694 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-11-22 15:07:46,694 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-11-22 15:07:46,695 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-22 15:07:46,695 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-11-22 15:07:46,696 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-11-22 15:07:46,696 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-22 15:07:46,697 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-22 15:07:46,697 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-11-22 15:07:46,697 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-22 15:07:46,698 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-11-22 15:07:46,698 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-22 15:07:46,699 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-11-22 15:07:46,699 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-22 15:07:46,699 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-22 15:07:46,700 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-11-22 15:07:46,700 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_92e9ba79-1faf-4a90-a6f9-998efa499463/bin/uautomizer-w2VwFs6gM0/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_92e9ba79-1faf-4a90-a6f9-998efa499463/bin/uautomizer-w2VwFs6gM0
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 -> 65ffec563eda24ea17e12fef14a53035d352d4fcf64600c3fa596f1fdab830a3
[2021-11-22 15:07:47,068 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-22 15:07:47,108 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-22 15:07:47,111 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-22 15:07:47,113 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-11-22 15:07:47,115 INFO  L275        PluginConnector]: CDTParser initialized
[2021-11-22 15:07:47,117 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e9ba79-1faf-4a90-a6f9-998efa499463/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/eca-rers2012/Problem05_label29.c
[2021-11-22 15:07:47,228 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e9ba79-1faf-4a90-a6f9-998efa499463/bin/uautomizer-w2VwFs6gM0/data/8d738f819/151f47d416c54c08a9a9abf598bcdd91/FLAGffe9ad946
[2021-11-22 15:07:48,558 INFO  L306              CDTParser]: Found 1 translation units.
[2021-11-22 15:07:48,560 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e9ba79-1faf-4a90-a6f9-998efa499463/sv-benchmarks/c/eca-rers2012/Problem05_label29.c
[2021-11-22 15:07:48,638 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e9ba79-1faf-4a90-a6f9-998efa499463/bin/uautomizer-w2VwFs6gM0/data/8d738f819/151f47d416c54c08a9a9abf598bcdd91/FLAGffe9ad946
[2021-11-22 15:07:48,663 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e9ba79-1faf-4a90-a6f9-998efa499463/bin/uautomizer-w2VwFs6gM0/data/8d738f819/151f47d416c54c08a9a9abf598bcdd91
[2021-11-22 15:07:48,667 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-22 15:07:48,671 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-22 15:07:48,673 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-22 15:07:48,673 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-22 15:07:48,678 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-22 15:07:48,679 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:07:48" (1/1) ...
[2021-11-22 15:07:48,680 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fcf9f1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:48, skipping insertion in model container
[2021-11-22 15:07:48,681 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:07:48" (1/1) ...
[2021-11-22 15:07:48,688 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-11-22 15:07:49,012 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-11-22 15:07:52,181 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_92e9ba79-1faf-4a90-a6f9-998efa499463/sv-benchmarks/c/eca-rers2012/Problem05_label29.c[382149,382162]
[2021-11-22 15:07:52,205 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-11-22 15:07:52,225 INFO  L203         MainTranslator]: Completed pre-run
[2021-11-22 15:07:53,761 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_92e9ba79-1faf-4a90-a6f9-998efa499463/sv-benchmarks/c/eca-rers2012/Problem05_label29.c[382149,382162]
[2021-11-22 15:07:53,765 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-11-22 15:07:53,850 INFO  L208         MainTranslator]: Completed translation
[2021-11-22 15:07:53,851 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:53 WrapperNode
[2021-11-22 15:07:53,852 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-22 15:07:53,854 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-22 15:07:53,854 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-22 15:07:53,854 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-22 15:07:53,865 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:53" (1/1) ...
[2021-11-22 15:07:54,028 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:53" (1/1) ...
[2021-11-22 15:07:54,519 INFO  L137                Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 12346
[2021-11-22 15:07:54,519 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-22 15:07:54,524 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-22 15:07:54,525 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-22 15:07:54,525 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-11-22 15:07:54,536 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:53" (1/1) ...
[2021-11-22 15:07:54,537 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:53" (1/1) ...
[2021-11-22 15:07:54,723 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:53" (1/1) ...
[2021-11-22 15:07:54,724 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:53" (1/1) ...
[2021-11-22 15:07:55,150 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:53" (1/1) ...
[2021-11-22 15:07:55,334 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:53" (1/1) ...
[2021-11-22 15:07:55,456 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:53" (1/1) ...
[2021-11-22 15:07:55,544 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-22 15:07:55,546 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-22 15:07:55,546 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-11-22 15:07:55,547 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-11-22 15:07:55,549 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:53" (1/1) ...
[2021-11-22 15:07:55,557 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-22 15:07:55,570 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e9ba79-1faf-4a90-a6f9-998efa499463/bin/uautomizer-w2VwFs6gM0/z3
[2021-11-22 15:07:55,586 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e9ba79-1faf-4a90-a6f9-998efa499463/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-22 15:07:55,608 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e9ba79-1faf-4a90-a6f9-998efa499463/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-22 15:07:55,655 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-11-22 15:07:55,656 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-22 15:07:55,656 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-22 15:07:55,656 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-22 15:07:55,744 INFO  L236             CfgBuilder]: Building ICFG
[2021-11-22 15:07:55,746 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-11-22 15:08:04,746 INFO  L277             CfgBuilder]: Performing block encoding
[2021-11-22 15:08:04,792 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-22 15:08:04,792 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-22 15:08:04,801 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:08:04 BoogieIcfgContainer
[2021-11-22 15:08:04,801 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-22 15:08:04,807 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-22 15:08:04,807 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-11-22 15:08:04,812 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-11-22 15:08:04,812 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:07:48" (1/3) ...
[2021-11-22 15:08:04,813 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74158a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:08:04, skipping insertion in model container
[2021-11-22 15:08:04,813 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:07:53" (2/3) ...
[2021-11-22 15:08:04,814 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74158a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:08:04, skipping insertion in model container
[2021-11-22 15:08:04,814 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:08:04" (3/3) ...
[2021-11-22 15:08:04,818 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label29.c
[2021-11-22 15:08:04,826 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-22 15:08:04,826 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-22 15:08:04,921 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-22 15:08:04,934 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
[2021-11-22 15:08:04,934 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-22 15:08:05,014 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:08:05,173 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1692
[2021-11-22 15:08:05,174 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-22 15:08:05,176 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-22 15:08:05,177 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-22 15:08:05,184 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-22 15:08:05,186 INFO  L85        PathProgramCache]: Analyzing trace with hash 900986273, now seen corresponding path program 1 times
[2021-11-22 15:08:05,198 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-22 15:08:05,199 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390034386]
[2021-11-22 15:08:05,200 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-22 15:08:05,202 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-22 15:08:06,168 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-22 15:08:08,794 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-22 15:08:08,795 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-22 15:08:08,795 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390034386]
[2021-11-22 15:08:08,796 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390034386] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-22 15:08:08,797 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-22 15:08:08,798 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-22 15:08:08,800 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539994395]
[2021-11-22 15:08:08,801 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-22 15:08:08,812 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-22 15:08:08,812 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-22 15:08:08,865 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-22 15:08:08,867 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-22 15:08:08,878 INFO  L87              Difference]: Start difference. First operand  has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 422.75) internal successors, (1691), 3 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:08:27,958 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-22 15:08:27,959 INFO  L93              Difference]: Finished difference Result 9533 states and 18374 transitions.
[2021-11-22 15:08:27,969 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-11-22 15:08:27,972 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 422.75) internal successors, (1691), 3 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1691
[2021-11-22 15:08:27,981 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-22 15:08:28,056 INFO  L225             Difference]: With dead ends: 9533
[2021-11-22 15:08:28,056 INFO  L226             Difference]: Without dead ends: 7278
[2021-11-22 15:08:28,068 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-22 15:08:28,073 INFO  L933         BasicCegarLoop]: 1195 mSDtfsCounter, 4219 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 10452 mSolverCounterSat, 5829 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4219 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 16281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5829 IncrementalHoareTripleChecker+Valid, 10452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time
[2021-11-22 15:08:28,074 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [4219 Valid, 1651 Invalid, 16281 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5829 Valid, 10452 Invalid, 0 Unknown, 0 Unchecked, 18.2s Time]
[2021-11-22 15:08:28,118 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7278 states.
[2021-11-22 15:08:28,351 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7278 to 5606.
[2021-11-22 15:08:28,368 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5606 states, 5605 states have (on average 1.527921498661909) internal successors, (8564), 5605 states have internal predecessors, (8564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:08:28,392 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5606 states to 5606 states and 8564 transitions.
[2021-11-22 15:08:28,394 INFO  L78                 Accepts]: Start accepts. Automaton has 5606 states and 8564 transitions. Word has length 1691
[2021-11-22 15:08:28,399 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-22 15:08:28,399 INFO  L470      AbstractCegarLoop]: Abstraction has 5606 states and 8564 transitions.
[2021-11-22 15:08:28,401 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 422.75) internal successors, (1691), 3 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:08:28,401 INFO  L276                IsEmpty]: Start isEmpty. Operand 5606 states and 8564 transitions.
[2021-11-22 15:08:28,775 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1812
[2021-11-22 15:08:28,776 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-22 15:08:28,777 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-22 15:08:28,778 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-22 15:08:28,779 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-22 15:08:28,781 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-22 15:08:28,782 INFO  L85        PathProgramCache]: Analyzing trace with hash -1686360499, now seen corresponding path program 1 times
[2021-11-22 15:08:28,782 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-22 15:08:28,783 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740303520]
[2021-11-22 15:08:28,783 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-22 15:08:28,784 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-22 15:08:29,009 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-22 15:08:30,883 INFO  L134       CoverageAnalysis]: Checked inductivity of 129 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-22 15:08:30,884 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-22 15:08:30,885 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740303520]
[2021-11-22 15:08:30,885 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740303520] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-22 15:08:30,885 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-22 15:08:30,886 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-22 15:08:30,886 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432666844]
[2021-11-22 15:08:30,887 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-22 15:08:30,891 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-22 15:08:30,892 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-22 15:08:30,893 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-22 15:08:30,893 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-22 15:08:30,896 INFO  L87              Difference]: Start difference. First operand 5606 states and 8564 transitions. Second operand  has 3 states, 3 states have (on average 603.6666666666666) internal successors, (1811), 3 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:08:39,452 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-22 15:08:39,452 INFO  L93              Difference]: Finished difference Result 14759 states and 23509 transitions.
[2021-11-22 15:08:39,464 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-22 15:08:39,465 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 603.6666666666666) internal successors, (1811), 3 states have internal predecessors, (1811), 0 states have call successors, (0), 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 1811
[2021-11-22 15:08:39,466 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-22 15:08:39,537 INFO  L225             Difference]: With dead ends: 14759
[2021-11-22 15:08:39,538 INFO  L226             Difference]: Without dead ends: 9155
[2021-11-22 15:08:39,549 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-22 15:08:39,551 INFO  L933         BasicCegarLoop]: 1005 mSDtfsCounter, 2108 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 5310 mSolverCounterSat, 2632 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 7942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2632 IncrementalHoareTripleChecker+Valid, 5310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time
[2021-11-22 15:08:39,552 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2108 Valid, 1173 Invalid, 7942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2632 Valid, 5310 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time]
[2021-11-22 15:08:39,568 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9155 states.
[2021-11-22 15:08:39,776 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9155 to 9070.
[2021-11-22 15:08:39,796 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9070 states, 9069 states have (on average 1.562906604917852) internal successors, (14174), 9069 states have internal predecessors, (14174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:08:39,822 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9070 states to 9070 states and 14174 transitions.
[2021-11-22 15:08:39,824 INFO  L78                 Accepts]: Start accepts. Automaton has 9070 states and 14174 transitions. Word has length 1811
[2021-11-22 15:08:39,825 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-22 15:08:39,827 INFO  L470      AbstractCegarLoop]: Abstraction has 9070 states and 14174 transitions.
[2021-11-22 15:08:39,828 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 603.6666666666666) internal successors, (1811), 3 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:08:39,829 INFO  L276                IsEmpty]: Start isEmpty. Operand 9070 states and 14174 transitions.
[2021-11-22 15:08:39,896 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1837
[2021-11-22 15:08:39,896 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-22 15:08:39,899 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-22 15:08:39,900 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-11-22 15:08:39,902 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-22 15:08:39,906 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-22 15:08:39,907 INFO  L85        PathProgramCache]: Analyzing trace with hash 1296188312, now seen corresponding path program 1 times
[2021-11-22 15:08:39,907 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-22 15:08:39,908 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253491844]
[2021-11-22 15:08:39,910 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-22 15:08:39,910 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-22 15:08:40,368 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-22 15:08:41,968 INFO  L134       CoverageAnalysis]: Checked inductivity of 179 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked.
[2021-11-22 15:08:41,969 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-22 15:08:41,977 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253491844]
[2021-11-22 15:08:41,977 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253491844] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-22 15:08:41,978 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-22 15:08:41,979 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-22 15:08:41,979 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516718764]
[2021-11-22 15:08:41,979 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-22 15:08:41,982 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-22 15:08:41,983 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-22 15:08:41,983 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-22 15:08:41,984 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-22 15:08:41,985 INFO  L87              Difference]: Start difference. First operand 9070 states and 14174 transitions. Second operand  has 3 states, 3 states have (on average 600.6666666666666) internal successors, (1802), 3 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:08:48,848 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-22 15:08:48,848 INFO  L93              Difference]: Finished difference Result 21634 states and 34074 transitions.
[2021-11-22 15:08:48,852 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-22 15:08:48,853 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 600.6666666666666) internal successors, (1802), 3 states have internal predecessors, (1802), 0 states have call successors, (0), 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 1836
[2021-11-22 15:08:48,858 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-22 15:08:48,936 INFO  L225             Difference]: With dead ends: 21634
[2021-11-22 15:08:48,936 INFO  L226             Difference]: Without dead ends: 12566
[2021-11-22 15:08:48,952 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-22 15:08:48,954 INFO  L933         BasicCegarLoop]: 2645 mSDtfsCounter, 430 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 5933 mSolverCounterSat, 1434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 7367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1434 IncrementalHoareTripleChecker+Valid, 5933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time
[2021-11-22 15:08:48,955 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 2790 Invalid, 7367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1434 Valid, 5933 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time]
[2021-11-22 15:08:48,975 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12566 states.
[2021-11-22 15:08:49,484 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12566 to 12483.
[2021-11-22 15:08:49,516 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12483 states, 12482 states have (on average 1.5028040378144527) internal successors, (18758), 12482 states have internal predecessors, (18758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:08:49,562 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12483 states to 12483 states and 18758 transitions.
[2021-11-22 15:08:49,563 INFO  L78                 Accepts]: Start accepts. Automaton has 12483 states and 18758 transitions. Word has length 1836
[2021-11-22 15:08:49,565 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-22 15:08:49,566 INFO  L470      AbstractCegarLoop]: Abstraction has 12483 states and 18758 transitions.
[2021-11-22 15:08:49,567 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 600.6666666666666) internal successors, (1802), 3 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:08:49,568 INFO  L276                IsEmpty]: Start isEmpty. Operand 12483 states and 18758 transitions.
[2021-11-22 15:08:49,663 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1840
[2021-11-22 15:08:49,664 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-22 15:08:49,666 INFO  L514         BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-22 15:08:49,667 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-11-22 15:08:49,668 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-22 15:08:49,669 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-22 15:08:49,670 INFO  L85        PathProgramCache]: Analyzing trace with hash 398724031, now seen corresponding path program 1 times
[2021-11-22 15:08:49,670 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-22 15:08:49,671 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835510408]
[2021-11-22 15:08:49,672 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-22 15:08:49,672 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-22 15:08:49,918 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-22 15:08:50,698 INFO  L134       CoverageAnalysis]: Checked inductivity of 195 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked.
[2021-11-22 15:08:50,701 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-22 15:08:50,701 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835510408]
[2021-11-22 15:08:50,701 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835510408] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-22 15:08:50,702 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-22 15:08:50,702 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-22 15:08:50,703 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61154446]
[2021-11-22 15:08:50,703 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-22 15:08:50,707 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-22 15:08:50,707 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-22 15:08:50,708 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-22 15:08:50,708 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-22 15:08:50,709 INFO  L87              Difference]: Start difference. First operand 12483 states and 18758 transitions. Second operand  has 3 states, 3 states have (on average 601.0) internal successors, (1803), 2 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:08:58,192 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-22 15:08:58,192 INFO  L93              Difference]: Finished difference Result 35151 states and 53775 transitions.
[2021-11-22 15:08:58,193 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-22 15:08:58,194 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 601.0) internal successors, (1803), 2 states have internal predecessors, (1803), 0 states have call successors, (0), 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 1839
[2021-11-22 15:08:58,194 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-22 15:08:58,255 INFO  L225             Difference]: With dead ends: 35151
[2021-11-22 15:08:58,255 INFO  L226             Difference]: Without dead ends: 22670
[2021-11-22 15:08:58,276 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
[2021-11-22 15:08:58,278 INFO  L933         BasicCegarLoop]: 1078 mSDtfsCounter, 3084 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 4770 mSolverCounterSat, 2128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3084 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 6898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2128 IncrementalHoareTripleChecker+Valid, 4770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time
[2021-11-22 15:08:58,279 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [3084 Valid, 1163 Invalid, 6898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2128 Valid, 4770 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time]
[2021-11-22 15:08:58,316 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22670 states.
[2021-11-22 15:08:58,671 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22670 to 22670.
[2021-11-22 15:08:58,702 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22670 states, 22669 states have (on average 1.4700251444704222) internal successors, (33324), 22669 states have internal predecessors, (33324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:08:58,756 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22670 states to 22670 states and 33324 transitions.
[2021-11-22 15:08:58,757 INFO  L78                 Accepts]: Start accepts. Automaton has 22670 states and 33324 transitions. Word has length 1839
[2021-11-22 15:08:58,757 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-22 15:08:58,757 INFO  L470      AbstractCegarLoop]: Abstraction has 22670 states and 33324 transitions.
[2021-11-22 15:08:58,758 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 601.0) internal successors, (1803), 2 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:08:58,758 INFO  L276                IsEmpty]: Start isEmpty. Operand 22670 states and 33324 transitions.
[2021-11-22 15:08:58,835 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1846
[2021-11-22 15:08:58,836 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-22 15:08:58,837 INFO  L514         BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-22 15:08:58,838 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-11-22 15:08:58,838 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-22 15:08:58,839 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-22 15:08:58,839 INFO  L85        PathProgramCache]: Analyzing trace with hash -903402125, now seen corresponding path program 1 times
[2021-11-22 15:08:58,840 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-22 15:08:58,840 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876889202]
[2021-11-22 15:08:58,840 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-22 15:08:58,841 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-22 15:08:59,037 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-22 15:09:00,045 INFO  L134       CoverageAnalysis]: Checked inductivity of 203 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2021-11-22 15:09:00,045 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-22 15:09:00,046 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876889202]
[2021-11-22 15:09:00,046 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876889202] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-22 15:09:00,046 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-22 15:09:00,047 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-22 15:09:00,047 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827727725]
[2021-11-22 15:09:00,047 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-22 15:09:00,051 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-22 15:09:00,051 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-22 15:09:00,052 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-22 15:09:00,052 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-22 15:09:00,053 INFO  L87              Difference]: Start difference. First operand 22670 states and 33324 transitions. Second operand  has 3 states, 3 states have (on average 611.6666666666666) internal successors, (1835), 3 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:09:07,864 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-22 15:09:07,864 INFO  L93              Difference]: Finished difference Result 65744 states and 97527 transitions.
[2021-11-22 15:09:07,867 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-22 15:09:07,868 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 611.6666666666666) internal successors, (1835), 3 states have internal predecessors, (1835), 0 states have call successors, (0), 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 1845
[2021-11-22 15:09:07,868 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-22 15:09:08,199 INFO  L225             Difference]: With dead ends: 65744
[2021-11-22 15:09:08,199 INFO  L226             Difference]: Without dead ends: 43076
[2021-11-22 15:09:08,240 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-22 15:09:08,244 INFO  L933         BasicCegarLoop]: 910 mSDtfsCounter, 2289 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 5097 mSolverCounterSat, 2747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2289 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 7844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2747 IncrementalHoareTripleChecker+Valid, 5097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time
[2021-11-22 15:09:08,247 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2289 Valid, 1012 Invalid, 7844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2747 Valid, 5097 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time]
[2021-11-22 15:09:08,301 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43076 states.
[2021-11-22 15:09:08,918 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43076 to 43058.
[2021-11-22 15:09:08,976 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 43058 states, 43057 states have (on average 1.4588800891841047) internal successors, (62815), 43057 states have internal predecessors, (62815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:09:09,060 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 43058 states to 43058 states and 62815 transitions.
[2021-11-22 15:09:09,061 INFO  L78                 Accepts]: Start accepts. Automaton has 43058 states and 62815 transitions. Word has length 1845
[2021-11-22 15:09:09,062 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-22 15:09:09,062 INFO  L470      AbstractCegarLoop]: Abstraction has 43058 states and 62815 transitions.
[2021-11-22 15:09:09,063 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 611.6666666666666) internal successors, (1835), 3 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:09:09,064 INFO  L276                IsEmpty]: Start isEmpty. Operand 43058 states and 62815 transitions.
[2021-11-22 15:09:09,179 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2091
[2021-11-22 15:09:09,179 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-22 15:09:09,182 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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-22 15:09:09,182 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-11-22 15:09:09,183 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-22 15:09:09,183 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-22 15:09:09,185 INFO  L85        PathProgramCache]: Analyzing trace with hash 867176471, now seen corresponding path program 1 times
[2021-11-22 15:09:09,185 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-22 15:09:09,185 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099615122]
[2021-11-22 15:09:09,188 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-22 15:09:09,188 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-22 15:09:09,430 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-22 15:09:10,595 INFO  L134       CoverageAnalysis]: Checked inductivity of 505 backedges. 397 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked.
[2021-11-22 15:09:10,596 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-22 15:09:10,596 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099615122]
[2021-11-22 15:09:10,596 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099615122] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-22 15:09:10,596 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-22 15:09:10,597 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-22 15:09:10,598 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599557620]
[2021-11-22 15:09:10,598 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-22 15:09:10,601 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-22 15:09:10,602 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-22 15:09:10,602 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-22 15:09:10,602 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-22 15:09:10,603 INFO  L87              Difference]: Start difference. First operand 43058 states and 62815 transitions. Second operand  has 3 states, 3 states have (on average 661.0) internal successors, (1983), 2 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:09:17,718 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-22 15:09:17,718 INFO  L93              Difference]: Finished difference Result 104786 states and 151537 transitions.
[2021-11-22 15:09:17,719 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-22 15:09:17,719 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 661.0) internal successors, (1983), 2 states have internal predecessors, (1983), 0 states have call successors, (0), 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 2090
[2021-11-22 15:09:17,720 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-22 15:09:17,841 INFO  L225             Difference]: With dead ends: 104786
[2021-11-22 15:09:17,842 INFO  L226             Difference]: Without dead ends: 61730
[2021-11-22 15:09:17,882 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
[2021-11-22 15:09:17,883 INFO  L933         BasicCegarLoop]: 1596 mSDtfsCounter, 2236 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 4801 mSolverCounterSat, 1697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2236 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 6498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1697 IncrementalHoareTripleChecker+Valid, 4801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time
[2021-11-22 15:09:17,884 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2236 Valid, 1780 Invalid, 6498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1697 Valid, 4801 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time]
[2021-11-22 15:09:17,962 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61730 states.
[2021-11-22 15:09:19,017 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61730 to 61729.
[2021-11-22 15:09:19,084 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 61729 states, 61728 states have (on average 1.2443785640228098) internal successors, (76813), 61728 states have internal predecessors, (76813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:09:19,197 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 61729 states to 61729 states and 76813 transitions.
[2021-11-22 15:09:19,197 INFO  L78                 Accepts]: Start accepts. Automaton has 61729 states and 76813 transitions. Word has length 2090
[2021-11-22 15:09:19,198 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-22 15:09:19,198 INFO  L470      AbstractCegarLoop]: Abstraction has 61729 states and 76813 transitions.
[2021-11-22 15:09:19,199 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 661.0) internal successors, (1983), 2 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:09:19,199 INFO  L276                IsEmpty]: Start isEmpty. Operand 61729 states and 76813 transitions.
[2021-11-22 15:09:19,317 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2197
[2021-11-22 15:09:19,317 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-22 15:09:19,322 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-22 15:09:19,323 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-11-22 15:09:19,323 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-22 15:09:19,324 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-22 15:09:19,325 INFO  L85        PathProgramCache]: Analyzing trace with hash -1045855355, now seen corresponding path program 1 times
[2021-11-22 15:09:19,325 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-22 15:09:19,325 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012364032]
[2021-11-22 15:09:19,326 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-22 15:09:19,326 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-22 15:09:19,546 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-22 15:09:21,267 INFO  L134       CoverageAnalysis]: Checked inductivity of 857 backedges. 533 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked.
[2021-11-22 15:09:21,268 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-22 15:09:21,268 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012364032]
[2021-11-22 15:09:21,268 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012364032] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-22 15:09:21,269 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-22 15:09:21,270 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-22 15:09:21,270 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629374750]
[2021-11-22 15:09:21,270 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-22 15:09:21,274 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-22 15:09:21,274 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-22 15:09:21,275 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-22 15:09:21,275 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-22 15:09:21,277 INFO  L87              Difference]: Start difference. First operand 61729 states and 76813 transitions. Second operand  has 3 states, 3 states have (on average 624.6666666666666) internal successors, (1874), 3 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:09:28,503 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-22 15:09:28,503 INFO  L93              Difference]: Finished difference Result 123529 states and 153749 transitions.
[2021-11-22 15:09:28,503 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-22 15:09:28,504 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 624.6666666666666) internal successors, (1874), 3 states have internal predecessors, (1874), 0 states have call successors, (0), 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 2196
[2021-11-22 15:09:28,504 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-22 15:09:28,603 INFO  L225             Difference]: With dead ends: 123529
[2021-11-22 15:09:28,604 INFO  L226             Difference]: Without dead ends: 61802
[2021-11-22 15:09:28,633 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-22 15:09:28,635 INFO  L933         BasicCegarLoop]: 3531 mSDtfsCounter, 1805 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 5920 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1805 SdHoareTripleChecker+Valid, 3757 SdHoareTripleChecker+Invalid, 6554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 5920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time
[2021-11-22 15:09:28,635 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1805 Valid, 3757 Invalid, 6554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 5920 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time]
[2021-11-22 15:09:28,698 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61802 states.
[2021-11-22 15:09:29,552 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61802 to 61730.
[2021-11-22 15:09:29,599 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 61730 states, 61729 states have (on average 1.22094963469358) internal successors, (75368), 61729 states have internal predecessors, (75368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:09:29,687 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 61730 states to 61730 states and 75368 transitions.
[2021-11-22 15:09:29,687 INFO  L78                 Accepts]: Start accepts. Automaton has 61730 states and 75368 transitions. Word has length 2196
[2021-11-22 15:09:29,688 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-22 15:09:29,688 INFO  L470      AbstractCegarLoop]: Abstraction has 61730 states and 75368 transitions.
[2021-11-22 15:09:29,688 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 624.6666666666666) internal successors, (1874), 3 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:09:29,689 INFO  L276                IsEmpty]: Start isEmpty. Operand 61730 states and 75368 transitions.
[2021-11-22 15:09:30,082 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2230
[2021-11-22 15:09:30,091 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-22 15:09:30,105 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-22 15:09:30,105 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-11-22 15:09:30,106 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-22 15:09:30,107 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-22 15:09:30,108 INFO  L85        PathProgramCache]: Analyzing trace with hash -243735879, now seen corresponding path program 1 times
[2021-11-22 15:09:30,109 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-22 15:09:30,109 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503772727]
[2021-11-22 15:09:30,110 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-22 15:09:30,110 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-22 15:09:30,419 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-22 15:09:31,700 INFO  L134       CoverageAnalysis]: Checked inductivity of 948 backedges. 411 proven. 0 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked.
[2021-11-22 15:09:31,700 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-22 15:09:31,700 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503772727]
[2021-11-22 15:09:31,700 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503772727] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-22 15:09:31,700 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-22 15:09:31,701 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-22 15:09:31,701 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650115889]
[2021-11-22 15:09:31,701 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-22 15:09:31,707 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-22 15:09:31,707 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-22 15:09:31,708 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-22 15:09:31,708 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-22 15:09:31,709 INFO  L87              Difference]: Start difference. First operand 61730 states and 75368 transitions. Second operand  has 3 states, 3 states have (on average 601.6666666666666) internal successors, (1805), 2 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:09:39,683 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-22 15:09:39,683 INFO  L93              Difference]: Finished difference Result 176091 states and 215892 transitions.
[2021-11-22 15:09:39,683 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-22 15:09:39,684 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 601.6666666666666) internal successors, (1805), 2 states have internal predecessors, (1805), 0 states have call successors, (0), 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 2229
[2021-11-22 15:09:39,684 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-22 15:09:39,848 INFO  L225             Difference]: With dead ends: 176091
[2021-11-22 15:09:39,848 INFO  L226             Difference]: Without dead ends: 114363
[2021-11-22 15:09:39,895 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
[2021-11-22 15:09:39,896 INFO  L933         BasicCegarLoop]: 1753 mSDtfsCounter, 2339 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4478 mSolverCounterSat, 2359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2339 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 6837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2359 IncrementalHoareTripleChecker+Valid, 4478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time
[2021-11-22 15:09:39,897 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2339 Valid, 1891 Invalid, 6837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2359 Valid, 4478 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time]
[2021-11-22 15:09:40,022 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 114363 states.
[2021-11-22 15:09:41,525 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 114363 to 100770.
[2021-11-22 15:09:41,621 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 100770 states, 100769 states have (on average 1.1778026972580853) internal successors, (118686), 100769 states have internal predecessors, (118686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:09:41,783 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 100770 states to 100770 states and 118686 transitions.
[2021-11-22 15:09:41,783 INFO  L78                 Accepts]: Start accepts. Automaton has 100770 states and 118686 transitions. Word has length 2229
[2021-11-22 15:09:41,784 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-22 15:09:41,784 INFO  L470      AbstractCegarLoop]: Abstraction has 100770 states and 118686 transitions.
[2021-11-22 15:09:41,785 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 601.6666666666666) internal successors, (1805), 2 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:09:41,785 INFO  L276                IsEmpty]: Start isEmpty. Operand 100770 states and 118686 transitions.
[2021-11-22 15:09:42,277 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2317
[2021-11-22 15:09:42,277 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-22 15:09:42,281 INFO  L514         BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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[2021-11-22 15:09:42,281 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2021-11-22 15:09:42,283 INFO  L402      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-22 15:09:42,285 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-22 15:09:42,286 INFO  L85        PathProgramCache]: Analyzing trace with hash -722013501, now seen corresponding path program 1 times
[2021-11-22 15:09:42,286 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-22 15:09:42,287 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953747761]
[2021-11-22 15:09:42,287 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-22 15:09:42,288 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-22 15:09:42,481 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-22 15:09:43,600 INFO  L134       CoverageAnalysis]: Checked inductivity of 1451 backedges. 720 proven. 0 refuted. 0 times theorem prover too weak. 731 trivial. 0 not checked.
[2021-11-22 15:09:43,601 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-22 15:09:43,601 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953747761]
[2021-11-22 15:09:43,601 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953747761] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-22 15:09:43,601 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-22 15:09:43,602 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-22 15:09:43,603 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227058620]
[2021-11-22 15:09:43,603 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-22 15:09:43,607 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-22 15:09:43,608 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-22 15:09:43,608 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-22 15:09:43,609 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-22 15:09:43,610 INFO  L87              Difference]: Start difference. First operand 100770 states and 118686 transitions. Second operand  has 3 states, 3 states have (on average 613.0) internal successors, (1839), 3 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:09:51,823 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-22 15:09:51,823 INFO  L93              Difference]: Finished difference Result 247406 states and 290822 transitions.
[2021-11-22 15:09:51,823 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-22 15:09:51,824 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 613.0) internal successors, (1839), 3 states have internal predecessors, (1839), 0 states have call successors, (0), 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 2316
[2021-11-22 15:09:51,824 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-22 15:09:52,009 INFO  L225             Difference]: With dead ends: 247406
[2021-11-22 15:09:52,009 INFO  L226             Difference]: Without dead ends: 146638
[2021-11-22 15:09:52,055 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-22 15:09:52,056 INFO  L933         BasicCegarLoop]: 2216 mSDtfsCounter, 1777 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 5732 mSolverCounterSat, 1287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1777 SdHoareTripleChecker+Valid, 2464 SdHoareTripleChecker+Invalid, 7019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1287 IncrementalHoareTripleChecker+Valid, 5732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time
[2021-11-22 15:09:52,057 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1777 Valid, 2464 Invalid, 7019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1287 Valid, 5732 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time]
[2021-11-22 15:09:52,216 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 146638 states.
[2021-11-22 15:09:54,032 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 146638 to 143229.
[2021-11-22 15:09:54,142 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 143229 states, 143228 states have (on average 1.1408314016812355) internal successors, (163399), 143228 states have internal predecessors, (163399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:09:54,828 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 143229 states to 143229 states and 163399 transitions.
[2021-11-22 15:09:54,828 INFO  L78                 Accepts]: Start accepts. Automaton has 143229 states and 163399 transitions. Word has length 2316
[2021-11-22 15:09:54,829 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-22 15:09:54,829 INFO  L470      AbstractCegarLoop]: Abstraction has 143229 states and 163399 transitions.
[2021-11-22 15:09:54,829 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 613.0) internal successors, (1839), 3 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:09:54,830 INFO  L276                IsEmpty]: Start isEmpty. Operand 143229 states and 163399 transitions.
[2021-11-22 15:09:54,978 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2355
[2021-11-22 15:09:54,978 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-22 15:09:54,980 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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[2021-11-22 15:09:54,981 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2021-11-22 15:09:54,981 INFO  L402      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-22 15:09:54,981 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-22 15:09:54,982 INFO  L85        PathProgramCache]: Analyzing trace with hash -645089249, now seen corresponding path program 1 times
[2021-11-22 15:09:54,982 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-22 15:09:54,983 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491030290]
[2021-11-22 15:09:54,983 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-22 15:09:54,984 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-22 15:09:55,196 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-22 15:09:56,790 INFO  L134       CoverageAnalysis]: Checked inductivity of 1211 backedges. 886 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked.
[2021-11-22 15:09:56,791 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-22 15:09:56,791 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491030290]
[2021-11-22 15:09:56,791 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491030290] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-22 15:09:56,791 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-22 15:09:56,792 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-22 15:09:56,793 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679723190]
[2021-11-22 15:09:56,793 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-22 15:09:56,796 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-22 15:09:56,797 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-22 15:09:56,797 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-22 15:09:56,798 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-22 15:09:56,798 INFO  L87              Difference]: Start difference. First operand 143229 states and 163399 transitions. Second operand  has 3 states, 3 states have (on average 677.0) internal successors, (2031), 3 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:10:04,900 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-22 15:10:04,900 INFO  L93              Difference]: Finished difference Result 349284 states and 396504 transitions.
[2021-11-22 15:10:04,901 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-22 15:10:04,901 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 677.0) internal successors, (2031), 3 states have internal predecessors, (2031), 0 states have call successors, (0), 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 2354
[2021-11-22 15:10:04,902 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-22 15:10:05,183 INFO  L225             Difference]: With dead ends: 349284
[2021-11-22 15:10:05,183 INFO  L226             Difference]: Without dead ends: 200917
[2021-11-22 15:10:05,243 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-22 15:10:05,244 INFO  L933         BasicCegarLoop]: 3074 mSDtfsCounter, 2138 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 4865 mSolverCounterSat, 1981 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2138 SdHoareTripleChecker+Valid, 3176 SdHoareTripleChecker+Invalid, 6846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1981 IncrementalHoareTripleChecker+Valid, 4865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time
[2021-11-22 15:10:05,244 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2138 Valid, 3176 Invalid, 6846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1981 Valid, 4865 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time]
[2021-11-22 15:10:05,434 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 200917 states.
[2021-11-22 15:10:08,424 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 200917 to 199207.
[2021-11-22 15:10:08,634 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 199207 states, 199206 states have (on average 1.0918396032248026) internal successors, (217501), 199206 states have internal predecessors, (217501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:10:08,959 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 199207 states to 199207 states and 217501 transitions.
[2021-11-22 15:10:08,960 INFO  L78                 Accepts]: Start accepts. Automaton has 199207 states and 217501 transitions. Word has length 2354
[2021-11-22 15:10:08,961 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-22 15:10:08,961 INFO  L470      AbstractCegarLoop]: Abstraction has 199207 states and 217501 transitions.
[2021-11-22 15:10:08,962 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 677.0) internal successors, (2031), 3 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:10:08,962 INFO  L276                IsEmpty]: Start isEmpty. Operand 199207 states and 217501 transitions.
[2021-11-22 15:10:09,149 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2459
[2021-11-22 15:10:09,149 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-22 15:10:09,151 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-22 15:10:09,152 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2021-11-22 15:10:09,152 INFO  L402      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-22 15:10:09,153 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-22 15:10:09,154 INFO  L85        PathProgramCache]: Analyzing trace with hash 1574377522, now seen corresponding path program 1 times
[2021-11-22 15:10:09,154 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-22 15:10:09,154 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640590279]
[2021-11-22 15:10:09,155 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-22 15:10:09,155 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-22 15:10:10,151 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-22 15:10:11,284 INFO  L134       CoverageAnalysis]: Checked inductivity of 1270 backedges. 980 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked.
[2021-11-22 15:10:11,285 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-22 15:10:11,285 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640590279]
[2021-11-22 15:10:11,285 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640590279] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-22 15:10:11,285 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-22 15:10:11,286 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-22 15:10:11,286 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624599397]
[2021-11-22 15:10:11,286 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-22 15:10:11,289 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-22 15:10:11,290 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-22 15:10:11,290 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-22 15:10:11,291 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-22 15:10:11,291 INFO  L87              Difference]: Start difference. First operand 199207 states and 217501 transitions. Second operand  has 3 states, 3 states have (on average 723.0) internal successors, (2169), 3 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:10:20,086 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-22 15:10:20,087 INFO  L93              Difference]: Finished difference Result 456169 states and 499418 transitions.
[2021-11-22 15:10:20,087 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-22 15:10:20,087 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 723.0) internal successors, (2169), 3 states have internal predecessors, (2169), 0 states have call successors, (0), 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 2458
[2021-11-22 15:10:20,088 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-22 15:10:20,452 INFO  L225             Difference]: With dead ends: 456169
[2021-11-22 15:10:20,453 INFO  L226             Difference]: Without dead ends: 258660
[2021-11-22 15:10:20,528 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-22 15:10:20,529 INFO  L933         BasicCegarLoop]: 3795 mSDtfsCounter, 1411 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 5646 mSolverCounterSat, 1151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1411 SdHoareTripleChecker+Valid, 4036 SdHoareTripleChecker+Invalid, 6797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1151 IncrementalHoareTripleChecker+Valid, 5646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time
[2021-11-22 15:10:20,530 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1411 Valid, 4036 Invalid, 6797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1151 Valid, 5646 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time]
[2021-11-22 15:10:20,763 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 258660 states.
[2021-11-22 15:10:24,221 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 258660 to 256938.
[2021-11-22 15:10:24,405 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 256938 states, 256937 states have (on average 1.0787080101347801) internal successors, (277160), 256937 states have internal predecessors, (277160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:10:24,888 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 256938 states to 256938 states and 277160 transitions.
[2021-11-22 15:10:24,889 INFO  L78                 Accepts]: Start accepts. Automaton has 256938 states and 277160 transitions. Word has length 2458
[2021-11-22 15:10:24,890 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-22 15:10:24,890 INFO  L470      AbstractCegarLoop]: Abstraction has 256938 states and 277160 transitions.
[2021-11-22 15:10:24,891 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 723.0) internal successors, (2169), 3 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:10:24,891 INFO  L276                IsEmpty]: Start isEmpty. Operand 256938 states and 277160 transitions.
[2021-11-22 15:10:26,092 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2484
[2021-11-22 15:10:26,092 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-22 15:10:26,094 INFO  L514         BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-22 15:10:26,095 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2021-11-22 15:10:26,095 INFO  L402      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-22 15:10:26,095 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-22 15:10:26,113 INFO  L85        PathProgramCache]: Analyzing trace with hash -1418998535, now seen corresponding path program 1 times
[2021-11-22 15:10:26,113 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-22 15:10:26,113 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480792004]
[2021-11-22 15:10:26,114 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-22 15:10:26,114 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-22 15:10:26,475 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-22 15:10:27,656 INFO  L134       CoverageAnalysis]: Checked inductivity of 1730 backedges. 1262 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked.
[2021-11-22 15:10:27,657 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-22 15:10:27,657 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480792004]
[2021-11-22 15:10:27,657 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480792004] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-22 15:10:27,657 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-22 15:10:27,658 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-22 15:10:27,659 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833871767]
[2021-11-22 15:10:27,659 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-22 15:10:27,662 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-22 15:10:27,663 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-22 15:10:27,663 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-22 15:10:27,663 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-22 15:10:27,664 INFO  L87              Difference]: Start difference. First operand 256938 states and 277160 transitions. Second operand  has 3 states, 3 states have (on average 684.3333333333334) internal successors, (2053), 3 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-22 15:10:36,973 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-22 15:10:36,974 INFO  L93              Difference]: Finished difference Result 576770 states and 622888 transitions.
[2021-11-22 15:10:36,974 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-22 15:10:36,974 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 684.3333333333334) internal successors, (2053), 3 states have internal predecessors, (2053), 0 states have call successors, (0), 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 2483
[2021-11-22 15:10:36,975 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-22 15:10:37,503 INFO  L225             Difference]: With dead ends: 576770
[2021-11-22 15:10:37,503 INFO  L226             Difference]: Without dead ends: 321531
[2021-11-22 15:10:37,665 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-22 15:10:37,666 INFO  L933         BasicCegarLoop]: 3491 mSDtfsCounter, 1742 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 5128 mSolverCounterSat, 1608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1742 SdHoareTripleChecker+Valid, 3707 SdHoareTripleChecker+Invalid, 6736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1608 IncrementalHoareTripleChecker+Valid, 5128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time
[2021-11-22 15:10:37,666 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1742 Valid, 3707 Invalid, 6736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1608 Valid, 5128 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time]
[2021-11-22 15:10:37,984 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 321531 states.