./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label25.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 839c364b
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e429757-ddd4-48f5-9499-488d2f7a9000/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e429757-ddd4-48f5-9499-488d2f7a9000/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e429757-ddd4-48f5-9499-488d2f7a9000/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e429757-ddd4-48f5-9499-488d2f7a9000/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label25.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e429757-ddd4-48f5-9499-488d2f7a9000/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e429757-ddd4-48f5-9499-488d2f7a9000/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c325216d27435ab9d61142a55a6376950293cfa4a3a29ba130107c87c7efd14
--- Real Ultimate output ---
This is Ultimate 0.2.2-hotfix-svcomp22-839c364
[2021-12-06 19:03:50,508 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-12-06 19:03:50,510 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-06 19:03:50,540 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-06 19:03:50,541 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-06 19:03:50,542 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-06 19:03:50,544 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-06 19:03:50,546 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-06 19:03:50,548 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-06 19:03:50,549 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-06 19:03:50,550 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-12-06 19:03:50,551 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-06 19:03:50,552 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-06 19:03:50,553 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-06 19:03:50,554 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-06 19:03:50,556 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-06 19:03:50,557 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-06 19:03:50,558 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-06 19:03:50,560 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-06 19:03:50,562 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-06 19:03:50,564 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-06 19:03:50,565 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-06 19:03:50,566 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-12-06 19:03:50,567 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-06 19:03:50,571 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-06 19:03:50,571 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-06 19:03:50,571 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-06 19:03:50,572 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-06 19:03:50,573 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-06 19:03:50,574 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-06 19:03:50,575 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-06 19:03:50,575 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-06 19:03:50,576 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-06 19:03:50,577 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-06 19:03:50,578 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-06 19:03:50,579 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-06 19:03:50,579 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-06 19:03:50,579 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-06 19:03:50,580 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-06 19:03:50,581 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-06 19:03:50,581 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-12-06 19:03:50,582 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e429757-ddd4-48f5-9499-488d2f7a9000/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-06 19:03:50,605 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-12-06 19:03:50,606 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-06 19:03:50,606 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-06 19:03:50,606 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-06 19:03:50,607 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-06 19:03:50,607 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-06 19:03:50,608 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-06 19:03:50,608 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-12-06 19:03:50,608 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-12-06 19:03:50,608 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-06 19:03:50,608 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-12-06 19:03:50,609 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-12-06 19:03:50,609 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-12-06 19:03:50,609 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-12-06 19:03:50,609 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-12-06 19:03:50,609 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-06 19:03:50,610 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-12-06 19:03:50,610 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-12-06 19:03:50,610 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-12-06 19:03:50,610 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-12-06 19:03:50,610 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-12-06 19:03:50,611 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-06 19:03:50,611 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-12-06 19:03:50,611 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-12-06 19:03:50,611 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 19:03:50,611 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-06 19:03:50,611 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-12-06 19:03:50,612 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-06 19:03:50,612 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-12-06 19:03:50,612 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-06 19:03:50,612 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-12-06 19:03:50,612 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-06 19:03:50,613 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-06 19:03:50,613 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-12-06 19:03:50,613 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_7e429757-ddd4-48f5-9499-488d2f7a9000/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e429757-ddd4-48f5-9499-488d2f7a9000/bin/uautomizer-DrprNOufMa
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c325216d27435ab9d61142a55a6376950293cfa4a3a29ba130107c87c7efd14
[2021-12-06 19:03:50,812 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-06 19:03:50,827 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-06 19:03:50,828 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-06 19:03:50,829 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-12-06 19:03:50,830 INFO  L275        PluginConnector]: CDTParser initialized
[2021-12-06 19:03:50,831 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e429757-ddd4-48f5-9499-488d2f7a9000/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-rers2012/Problem07_label25.c
[2021-12-06 19:03:50,876 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e429757-ddd4-48f5-9499-488d2f7a9000/bin/uautomizer-DrprNOufMa/data/ec66c10ff/2ea336b1b8cc43eca59d42763e127c24/FLAGe1a8fd2e7
[2021-12-06 19:03:52,158 INFO  L306              CDTParser]: Found 1 translation units.
[2021-12-06 19:03:52,159 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e429757-ddd4-48f5-9499-488d2f7a9000/sv-benchmarks/c/eca-rers2012/Problem07_label25.c
[2021-12-06 19:03:52,333 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e429757-ddd4-48f5-9499-488d2f7a9000/bin/uautomizer-DrprNOufMa/data/ec66c10ff/2ea336b1b8cc43eca59d42763e127c24/FLAGe1a8fd2e7
[2021-12-06 19:03:52,422 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e429757-ddd4-48f5-9499-488d2f7a9000/bin/uautomizer-DrprNOufMa/data/ec66c10ff/2ea336b1b8cc43eca59d42763e127c24
[2021-12-06 19:03:52,428 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-06 19:03:52,430 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-06 19:03:52,432 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-06 19:03:52,433 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-06 19:03:52,437 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-06 19:03:52,438 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:03:52" (1/1) ...
[2021-12-06 19:03:52,440 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1af6ac58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:03:52, skipping insertion in model container
[2021-12-06 19:03:52,440 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:03:52" (1/1) ...
[2021-12-06 19:03:52,447 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-12-06 19:03:53,103 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-12-06 19:04:02,876 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_7e429757-ddd4-48f5-9499-488d2f7a9000/sv-benchmarks/c/eca-rers2012/Problem07_label25.c[2775977,2775990]
[2021-12-06 19:04:02,932 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 19:04:02,938 INFO  L203         MainTranslator]: Completed pre-run
[2021-12-06 19:04:09,006 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_7e429757-ddd4-48f5-9499-488d2f7a9000/sv-benchmarks/c/eca-rers2012/Problem07_label25.c[2775977,2775990]
[2021-12-06 19:04:09,009 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 19:04:09,720 INFO  L208         MainTranslator]: Completed translation
[2021-12-06 19:04:09,721 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:04:09 WrapperNode
[2021-12-06 19:04:09,721 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-06 19:04:09,721 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-06 19:04:09,721 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-06 19:04:09,722 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-06 19:04:09,727 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:04:09" (1/1) ...
[2021-12-06 19:04:10,167 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:04:09" (1/1) ...
[2021-12-06 19:04:11,564 INFO  L137                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2021-12-06 19:04:11,564 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-06 19:04:11,565 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-06 19:04:11,565 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-06 19:04:11,565 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-12-06 19:04:11,572 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:04:09" (1/1) ...
[2021-12-06 19:04:11,572 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:04:09" (1/1) ...
[2021-12-06 19:04:11,785 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:04:09" (1/1) ...
[2021-12-06 19:04:11,785 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:04:09" (1/1) ...
[2021-12-06 19:04:12,419 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:04:09" (1/1) ...
[2021-12-06 19:04:12,540 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:04:09" (1/1) ...
[2021-12-06 19:04:12,645 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:04:09" (1/1) ...
[2021-12-06 19:04:12,939 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-06 19:04:12,940 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-06 19:04:12,940 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-12-06 19:04:12,940 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-12-06 19:04:12,941 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:04:09" (1/1) ...
[2021-12-06 19:04:12,947 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 19:04:12,955 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e429757-ddd4-48f5-9499-488d2f7a9000/bin/uautomizer-DrprNOufMa/z3
[2021-12-06 19:04:12,965 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e429757-ddd4-48f5-9499-488d2f7a9000/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-12-06 19:04:12,967 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e429757-ddd4-48f5-9499-488d2f7a9000/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-12-06 19:04:12,995 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-06 19:04:12,996 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-06 19:04:12,996 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-06 19:04:12,996 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-06 19:04:13,106 INFO  L236             CfgBuilder]: Building ICFG
[2021-12-06 19:04:13,107 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-06 19:04:37,059 INFO  L277             CfgBuilder]: Performing block encoding
[2021-12-06 19:04:37,100 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-06 19:04:37,100 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-06 19:04:37,109 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:04:37 BoogieIcfgContainer
[2021-12-06 19:04:37,109 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-06 19:04:37,111 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-06 19:04:37,111 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-12-06 19:04:37,113 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-12-06 19:04:37,113 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:03:52" (1/3) ...
[2021-12-06 19:04:37,114 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd90cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:04:37, skipping insertion in model container
[2021-12-06 19:04:37,114 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:04:09" (2/3) ...
[2021-12-06 19:04:37,114 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd90cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:04:37, skipping insertion in model container
[2021-12-06 19:04:37,114 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:04:37" (3/3) ...
[2021-12-06 19:04:37,115 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem07_label25.c
[2021-12-06 19:04:37,119 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-06 19:04:37,119 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-06 19:04:37,175 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-06 19:04:37,180 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-12-06 19:04:37,181 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-06 19:04:37,302 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:04:37,838 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10141
[2021-12-06 19:04:37,838 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:04:37,844 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 19:04:37,846 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:04:37,858 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:04:37,863 INFO  L85        PathProgramCache]: Analyzing trace with hash 1462024626, now seen corresponding path program 1 times
[2021-12-06 19:04:37,870 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:04:37,870 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752285062]
[2021-12-06 19:04:37,873 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:04:37,873 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:04:39,486 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:05:00,689 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 19:05:00,689 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:05:00,689 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752285062]
[2021-12-06 19:05:00,690 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752285062] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:05:00,690 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:05:00,691 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-12-06 19:05:00,692 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457797474]
[2021-12-06 19:05:00,693 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:05:00,706 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-12-06 19:05:00,706 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:05:00,724 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-12-06 19:05:00,725 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-12-06 19:05:00,745 INFO  L87              Difference]: Start difference. First operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 5 states, 5 states have (on average 2028.0) internal successors, (10140), 4 states have internal predecessors, (10140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:05:59,583 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:05:59,584 INFO  L93              Difference]: Finished difference Result 51091 states and 101806 transitions.
[2021-12-06 19:05:59,584 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-12-06 19:05:59,587 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 2028.0) internal successors, (10140), 4 states have internal predecessors, (10140), 0 states have call successors, (0), 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 10140
[2021-12-06 19:05:59,604 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:05:59,764 INFO  L225             Difference]: With dead ends: 51091
[2021-12-06 19:05:59,764 INFO  L226             Difference]: Without dead ends: 40764
[2021-12-06 19:05:59,781 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2021-12-06 19:05:59,783 INFO  L933         BasicCegarLoop]: 1751 mSDtfsCounter, 41832 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 79529 mSolverCounterSat, 30805 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41832 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 110334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 30805 IncrementalHoareTripleChecker+Valid, 79529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.5s IncrementalHoareTripleChecker+Time
[2021-12-06 19:05:59,784 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [41832 Valid, 1970 Invalid, 110334 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [30805 Valid, 79529 Invalid, 0 Unknown, 0 Unchecked, 57.5s Time]
[2021-12-06 19:05:59,842 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40764 states.
[2021-12-06 19:06:00,372 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 40764.
[2021-12-06 19:06:00,417 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40764 states, 40763 states have (on average 1.455879106052057) internal successors, (59346), 40763 states have internal predecessors, (59346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:06:00,540 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40764 states to 40764 states and 59346 transitions.
[2021-12-06 19:06:00,541 INFO  L78                 Accepts]: Start accepts. Automaton has 40764 states and 59346 transitions. Word has length 10140
[2021-12-06 19:06:00,567 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:06:00,567 INFO  L470      AbstractCegarLoop]: Abstraction has 40764 states and 59346 transitions.
[2021-12-06 19:06:00,569 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 2028.0) internal successors, (10140), 4 states have internal predecessors, (10140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:06:00,569 INFO  L276                IsEmpty]: Start isEmpty. Operand 40764 states and 59346 transitions.
[2021-12-06 19:06:01,516 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13041
[2021-12-06 19:06:01,517 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:06:01,526 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 19:06:01,526 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-06 19:06:01,527 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:06:01,528 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:06:01,531 INFO  L85        PathProgramCache]: Analyzing trace with hash 1856937545, now seen corresponding path program 1 times
[2021-12-06 19:06:01,531 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:06:01,531 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254714570]
[2021-12-06 19:06:01,532 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:06:01,532 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:06:02,861 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:06:36,066 INFO  L134       CoverageAnalysis]: Checked inductivity of 2890 backedges. 2890 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 19:06:36,066 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:06:36,066 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254714570]
[2021-12-06 19:06:36,066 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254714570] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:06:36,067 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:06:36,068 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-06 19:06:36,069 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798863278]
[2021-12-06 19:06:36,069 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:06:36,087 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:06:36,088 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:06:36,088 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:06:36,088 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:06:36,092 INFO  L87              Difference]: Start difference. First operand 40764 states and 59346 transitions. Second operand  has 3 states, 3 states have (on average 4346.666666666667) internal successors, (13040), 3 states have internal predecessors, (13040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:07:00,658 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:07:00,658 INFO  L93              Difference]: Finished difference Result 91716 states and 147433 transitions.
[2021-12-06 19:07:00,658 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:07:00,661 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4346.666666666667) internal successors, (13040), 3 states have internal predecessors, (13040), 0 states have call successors, (0), 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 13040
[2021-12-06 19:07:00,663 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:07:00,727 INFO  L225             Difference]: With dead ends: 91716
[2021-12-06 19:07:00,727 INFO  L226             Difference]: Without dead ends: 61144
[2021-12-06 19:07:00,748 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
[2021-12-06 19:07:00,749 INFO  L933         BasicCegarLoop]: 16872 mSDtfsCounter, 10222 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 32573 mSolverCounterSat, 9041 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10222 SdHoareTripleChecker+Valid, 16923 SdHoareTripleChecker+Invalid, 41614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9041 IncrementalHoareTripleChecker+Valid, 32573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time
[2021-12-06 19:07:00,750 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10222 Valid, 16923 Invalid, 41614 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9041 Valid, 32573 Invalid, 0 Unknown, 0 Unchecked, 24.0s Time]
[2021-12-06 19:07:00,795 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61144 states.
[2021-12-06 19:07:01,401 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61144 to 61144.
[2021-12-06 19:07:01,446 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 61144 states, 61143 states have (on average 1.4254125574472958) internal successors, (87154), 61143 states have internal predecessors, (87154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:07:01,616 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 61144 states to 61144 states and 87154 transitions.
[2021-12-06 19:07:01,616 INFO  L78                 Accepts]: Start accepts. Automaton has 61144 states and 87154 transitions. Word has length 13040
[2021-12-06 19:07:01,620 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:07:01,620 INFO  L470      AbstractCegarLoop]: Abstraction has 61144 states and 87154 transitions.
[2021-12-06 19:07:01,622 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4346.666666666667) internal successors, (13040), 3 states have internal predecessors, (13040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:07:01,622 INFO  L276                IsEmpty]: Start isEmpty. Operand 61144 states and 87154 transitions.
[2021-12-06 19:07:02,566 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13044
[2021-12-06 19:07:02,567 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:07:02,573 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-06 19:07:02,573 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-06 19:07:02,574 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:07:02,575 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:07:02,578 INFO  L85        PathProgramCache]: Analyzing trace with hash -1484240799, now seen corresponding path program 1 times
[2021-12-06 19:07:02,578 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:07:02,578 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583886955]
[2021-12-06 19:07:02,579 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:07:02,579 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:07:03,826 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:07:34,893 INFO  L134       CoverageAnalysis]: Checked inductivity of 2896 backedges. 2889 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2021-12-06 19:07:34,893 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:07:34,894 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583886955]
[2021-12-06 19:07:34,894 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583886955] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:07:34,894 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:07:34,896 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:07:34,896 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267372810]
[2021-12-06 19:07:34,896 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:07:34,906 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:07:34,906 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:07:34,906 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:07:34,906 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:07:34,909 INFO  L87              Difference]: Start difference. First operand 61144 states and 87154 transitions. Second operand  has 3 states, 3 states have (on average 4345.666666666667) internal successors, (13037), 2 states have internal predecessors, (13037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:07:59,029 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:07:59,029 INFO  L93              Difference]: Finished difference Result 152856 states and 230857 transitions.
[2021-12-06 19:07:59,030 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:07:59,031 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4345.666666666667) internal successors, (13037), 2 states have internal predecessors, (13037), 0 states have call successors, (0), 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 13043
[2021-12-06 19:07:59,033 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:07:59,265 INFO  L225             Difference]: With dead ends: 152856
[2021-12-06 19:07:59,265 INFO  L226             Difference]: Without dead ends: 101904
[2021-12-06 19:07:59,291 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:07:59,292 INFO  L933         BasicCegarLoop]: 7457 mSDtfsCounter, 9050 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29733 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9050 SdHoareTripleChecker+Valid, 7506 SdHoareTripleChecker+Invalid, 41410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 29733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time
[2021-12-06 19:07:59,292 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [9050 Valid, 7506 Invalid, 41410 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 29733 Invalid, 0 Unknown, 0 Unchecked, 23.5s Time]
[2021-12-06 19:07:59,350 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 101904 states.
[2021-12-06 19:08:00,092 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 101904 to 101904.
[2021-12-06 19:08:00,162 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 101904 states, 101903 states have (on average 1.3898609461939295) internal successors, (141631), 101903 states have internal predecessors, (141631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:08:00,294 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 101904 states to 101904 states and 141631 transitions.
[2021-12-06 19:08:00,294 INFO  L78                 Accepts]: Start accepts. Automaton has 101904 states and 141631 transitions. Word has length 13043
[2021-12-06 19:08:00,298 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:08:00,298 INFO  L470      AbstractCegarLoop]: Abstraction has 101904 states and 141631 transitions.
[2021-12-06 19:08:00,299 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4345.666666666667) internal successors, (13037), 2 states have internal predecessors, (13037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:08:00,300 INFO  L276                IsEmpty]: Start isEmpty. Operand 101904 states and 141631 transitions.
[2021-12-06 19:08:01,421 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13052
[2021-12-06 19:08:01,421 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:08:01,427 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-06 19:08:01,427 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-12-06 19:08:01,428 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:08:01,428 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:08:01,431 INFO  L85        PathProgramCache]: Analyzing trace with hash -1679109518, now seen corresponding path program 1 times
[2021-12-06 19:08:01,431 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:08:01,431 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904836208]
[2021-12-06 19:08:01,432 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:08:01,432 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:08:02,663 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:08:34,686 INFO  L134       CoverageAnalysis]: Checked inductivity of 2916 backedges. 2901 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2021-12-06 19:08:34,686 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:08:34,686 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904836208]
[2021-12-06 19:08:34,686 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904836208] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:08:34,686 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:08:34,688 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:08:34,688 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856414397]
[2021-12-06 19:08:34,688 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:08:34,698 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:08:34,698 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:08:34,698 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:08:34,698 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:08:34,701 INFO  L87              Difference]: Start difference. First operand 101904 states and 141631 transitions. Second operand  has 3 states, 3 states have (on average 4346.0) internal successors, (13038), 2 states have internal predecessors, (13038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:08:58,924 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:08:58,924 INFO  L93              Difference]: Finished difference Result 275136 states and 394288 transitions.
[2021-12-06 19:08:58,924 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:08:58,926 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4346.0) internal successors, (13038), 2 states have internal predecessors, (13038), 0 states have call successors, (0), 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 13051
[2021-12-06 19:08:58,928 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:08:59,094 INFO  L225             Difference]: With dead ends: 275136
[2021-12-06 19:08:59,094 INFO  L226             Difference]: Without dead ends: 183424
[2021-12-06 19:08:59,138 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:08:59,139 INFO  L933         BasicCegarLoop]: 5794 mSDtfsCounter, 10804 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27457 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10804 SdHoareTripleChecker+Valid, 5843 SdHoareTripleChecker+Invalid, 40487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time
[2021-12-06 19:08:59,140 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10804 Valid, 5843 Invalid, 40487 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27457 Invalid, 0 Unknown, 0 Unchecked, 23.4s Time]
[2021-12-06 19:08:59,247 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 183424 states.
[2021-12-06 19:09:00,566 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 183424 to 183424.
[2021-12-06 19:09:00,684 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 183424 states, 183423 states have (on average 1.3136575020580843) internal successors, (240955), 183423 states have internal predecessors, (240955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:09:00,910 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 183424 states to 183424 states and 240955 transitions.
[2021-12-06 19:09:00,911 INFO  L78                 Accepts]: Start accepts. Automaton has 183424 states and 240955 transitions. Word has length 13051
[2021-12-06 19:09:00,913 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:09:00,913 INFO  L470      AbstractCegarLoop]: Abstraction has 183424 states and 240955 transitions.
[2021-12-06 19:09:00,915 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4346.0) internal successors, (13038), 2 states have internal predecessors, (13038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:09:00,915 INFO  L276                IsEmpty]: Start isEmpty. Operand 183424 states and 240955 transitions.
[2021-12-06 19:09:02,207 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13055
[2021-12-06 19:09:02,207 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:09:02,214 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2021-12-06 19:09:02,214 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-12-06 19:09:02,214 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:09:02,214 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:09:02,218 INFO  L85        PathProgramCache]: Analyzing trace with hash -1642032730, now seen corresponding path program 1 times
[2021-12-06 19:09:02,218 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:09:02,218 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799166510]
[2021-12-06 19:09:02,219 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:09:02,219 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:09:03,528 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:09:32,384 INFO  L134       CoverageAnalysis]: Checked inductivity of 2918 backedges. 2900 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2021-12-06 19:09:32,384 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:09:32,385 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799166510]
[2021-12-06 19:09:32,385 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799166510] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:09:32,385 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:09:32,388 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:09:32,388 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475028328]
[2021-12-06 19:09:32,388 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:09:32,401 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:09:32,401 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:09:32,401 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:09:32,401 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:09:32,405 INFO  L87              Difference]: Start difference. First operand 183424 states and 240955 transitions. Second operand  has 3 states, 3 states have (on average 4345.666666666667) internal successors, (13037), 2 states have internal predecessors, (13037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:09:57,688 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:09:57,689 INFO  L93              Difference]: Finished difference Result 519696 states and 692260 transitions.
[2021-12-06 19:09:57,689 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:09:57,690 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4345.666666666667) internal successors, (13037), 2 states have internal predecessors, (13037), 0 states have call successors, (0), 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 13054
[2021-12-06 19:09:57,692 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:09:58,057 INFO  L225             Difference]: With dead ends: 519696
[2021-12-06 19:09:58,057 INFO  L226             Difference]: Without dead ends: 346464
[2021-12-06 19:09:58,231 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:09:58,232 INFO  L933         BasicCegarLoop]: 9490 mSDtfsCounter, 7750 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 31879 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7750 SdHoareTripleChecker+Valid, 9539 SdHoareTripleChecker+Invalid, 42380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 31879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time
[2021-12-06 19:09:58,232 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [7750 Valid, 9539 Invalid, 42380 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 31879 Invalid, 0 Unknown, 0 Unchecked, 23.9s Time]
[2021-12-06 19:09:58,408 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 346464 states.
[2021-12-06 19:10:00,965 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 346464 to 346464.
[2021-12-06 19:10:01,175 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 346464 states, 346463 states have (on average 1.2524136776510046) internal successors, (433915), 346463 states have internal predecessors, (433915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:10:01,827 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 346464 states to 346464 states and 433915 transitions.
[2021-12-06 19:10:01,827 INFO  L78                 Accepts]: Start accepts. Automaton has 346464 states and 433915 transitions. Word has length 13054
[2021-12-06 19:10:01,828 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:10:01,829 INFO  L470      AbstractCegarLoop]: Abstraction has 346464 states and 433915 transitions.
[2021-12-06 19:10:01,830 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4345.666666666667) internal successors, (13037), 2 states have internal predecessors, (13037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:10:01,830 INFO  L276                IsEmpty]: Start isEmpty. Operand 346464 states and 433915 transitions.
[2021-12-06 19:10:03,146 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13087
[2021-12-06 19:10:03,146 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:10:03,149 INFO  L514         BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-06 19:10:03,149 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-12-06 19:10:03,149 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:10:03,149 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:10:03,151 INFO  L85        PathProgramCache]: Analyzing trace with hash -1262850232, now seen corresponding path program 1 times
[2021-12-06 19:10:03,151 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:10:03,151 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084284213]
[2021-12-06 19:10:03,152 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:10:03,152 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:10:04,382 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:10:32,867 INFO  L134       CoverageAnalysis]: Checked inductivity of 2989 backedges. 2981 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2021-12-06 19:10:32,868 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:10:32,868 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084284213]
[2021-12-06 19:10:32,868 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084284213] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:10:32,868 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:10:32,870 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-06 19:10:32,870 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677224053]
[2021-12-06 19:10:32,870 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:10:32,876 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:10:32,876 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:10:32,876 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:10:32,876 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:10:32,879 INFO  L87              Difference]: Start difference. First operand 346464 states and 433915 transitions. Second operand  has 3 states, 3 states have (on average 4359.666666666667) internal successors, (13079), 3 states have internal predecessors, (13079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:11:00,726 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:11:00,726 INFO  L93              Difference]: Finished difference Result 1008816 states and 1271140 transitions.
[2021-12-06 19:11:00,727 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:11:00,728 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4359.666666666667) internal successors, (13079), 3 states have internal predecessors, (13079), 0 states have call successors, (0), 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 13086
[2021-12-06 19:11:00,729 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:11:01,542 INFO  L225             Difference]: With dead ends: 1008816
[2021-12-06 19:11:01,543 INFO  L226             Difference]: Without dead ends: 672544
[2021-12-06 19:11:01,679 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
[2021-12-06 19:11:01,679 INFO  L933         BasicCegarLoop]: 19101 mSDtfsCounter, 10165 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 35286 mSolverCounterSat, 7698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10165 SdHoareTripleChecker+Valid, 19152 SdHoareTripleChecker+Invalid, 42984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7698 IncrementalHoareTripleChecker+Valid, 35286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time
[2021-12-06 19:11:01,680 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10165 Valid, 19152 Invalid, 42984 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7698 Valid, 35286 Invalid, 0 Unknown, 0 Unchecked, 25.5s Time]
[2021-12-06 19:11:02,242 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 672544 states.
[2021-12-06 19:11:07,334 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 672544 to 672544.
[2021-12-06 19:11:07,575 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 672544 states, 672543 states have (on average 1.1844164611036023) internal successors, (796571), 672543 states have internal predecessors, (796571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:11:08,626 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 672544 states to 672544 states and 796571 transitions.
[2021-12-06 19:11:08,627 INFO  L78                 Accepts]: Start accepts. Automaton has 672544 states and 796571 transitions. Word has length 13086
[2021-12-06 19:11:08,628 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:11:08,628 INFO  L470      AbstractCegarLoop]: Abstraction has 672544 states and 796571 transitions.
[2021-12-06 19:11:08,629 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4359.666666666667) internal successors, (13079), 3 states have internal predecessors, (13079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:11:08,629 INFO  L276                IsEmpty]: Start isEmpty. Operand 672544 states and 796571 transitions.
[2021-12-06 19:11:10,445 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13129
[2021-12-06 19:11:10,445 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:11:10,448 INFO  L514         BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-06 19:11:10,448 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-12-06 19:11:10,448 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:11:10,448 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:11:10,449 INFO  L85        PathProgramCache]: Analyzing trace with hash 679660127, now seen corresponding path program 1 times
[2021-12-06 19:11:10,449 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:11:10,450 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659886644]
[2021-12-06 19:11:10,450 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:11:10,451 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:11:11,612 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:11:40,177 INFO  L134       CoverageAnalysis]: Checked inductivity of 3073 backedges. 2981 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked.
[2021-12-06 19:11:40,178 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:11:40,178 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659886644]
[2021-12-06 19:11:40,178 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659886644] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:11:40,178 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:11:40,180 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:11:40,180 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048907427]
[2021-12-06 19:11:40,180 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:11:40,186 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:11:40,186 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:11:40,186 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:11:40,186 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:11:40,189 INFO  L87              Difference]: Start difference. First operand 672544 states and 796571 transitions. Second operand  has 3 states, 3 states have (on average 4346.0) internal successors, (13038), 2 states have internal predecessors, (13038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:12:07,987 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 19:12:07,987 INFO  L93              Difference]: Finished difference Result 1976866 states and 2348690 transitions.
[2021-12-06 19:12:07,987 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 19:12:07,989 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4346.0) internal successors, (13038), 2 states have internal predecessors, (13038), 0 states have call successors, (0), 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 13128
[2021-12-06 19:12:07,990 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 19:12:09,625 INFO  L225             Difference]: With dead ends: 1976866
[2021-12-06 19:12:09,626 INFO  L226             Difference]: Without dead ends: 1314514
[2021-12-06 19:12:10,050 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:12:10,051 INFO  L933         BasicCegarLoop]: 5572 mSDtfsCounter, 10468 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28952 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10468 SdHoareTripleChecker+Valid, 5621 SdHoareTripleChecker+Invalid, 40710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time
[2021-12-06 19:12:10,051 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10468 Valid, 5621 Invalid, 40710 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28952 Invalid, 0 Unknown, 0 Unchecked, 23.3s Time]
[2021-12-06 19:12:10,965 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1314514 states.
[2021-12-06 19:12:21,002 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314514 to 1314514.
[2021-12-06 19:12:21,620 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1314514 states, 1314513 states have (on average 1.1435725626144435) internal successors, (1503241), 1314513 states have internal predecessors, (1503241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:12:24,219 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1314514 states to 1314514 states and 1503241 transitions.
[2021-12-06 19:12:24,220 INFO  L78                 Accepts]: Start accepts. Automaton has 1314514 states and 1503241 transitions. Word has length 13128
[2021-12-06 19:12:24,221 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 19:12:24,221 INFO  L470      AbstractCegarLoop]: Abstraction has 1314514 states and 1503241 transitions.
[2021-12-06 19:12:24,223 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4346.0) internal successors, (13038), 2 states have internal predecessors, (13038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 19:12:24,223 INFO  L276                IsEmpty]: Start isEmpty. Operand 1314514 states and 1503241 transitions.
[2021-12-06 19:12:26,556 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13212
[2021-12-06 19:12:26,557 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 19:12:26,561 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-06 19:12:26,561 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-12-06 19:12:26,561 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 19:12:26,576 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 19:12:26,578 INFO  L85        PathProgramCache]: Analyzing trace with hash -662401564, now seen corresponding path program 1 times
[2021-12-06 19:12:26,579 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 19:12:26,579 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773865696]
[2021-12-06 19:12:26,580 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 19:12:26,580 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 19:12:27,815 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 19:12:58,246 INFO  L134       CoverageAnalysis]: Checked inductivity of 3346 backedges. 3138 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked.
[2021-12-06 19:12:58,246 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 19:12:58,246 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773865696]
[2021-12-06 19:12:58,246 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773865696] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 19:12:58,246 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 19:12:58,248 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 19:12:58,248 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849257606]
[2021-12-06 19:12:58,248 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 19:12:58,254 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 19:12:58,254 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 19:12:58,255 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 19:12:58,255 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 19:12:58,258 INFO  L87              Difference]: Start difference. First operand 1314514 states and 1503241 transitions. Second operand  has 3 states, 3 states have (on average 4346.333333333333) internal successors, (13039), 2 states have internal predecessors, (13039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)