./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label52.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 2329fc70
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9d5b96-39d7-4a28-96e8-aeb705b82d27/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9d5b96-39d7-4a28-96e8-aeb705b82d27/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9d5b96-39d7-4a28-96e8-aeb705b82d27/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9d5b96-39d7-4a28-96e8-aeb705b82d27/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label52.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9d5b96-39d7-4a28-96e8-aeb705b82d27/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9d5b96-39d7-4a28-96e8-aeb705b82d27/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 300dca2efecc5c8214152db2a6b2d689ec4c315eac2b659302619d92ad8af6b0
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-2329fc7
[2022-12-14 14:28:03,643 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-12-14 14:28:03,644 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-12-14 14:28:03,657 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-12-14 14:28:03,657 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-12-14 14:28:03,658 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-12-14 14:28:03,659 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-12-14 14:28:03,660 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-12-14 14:28:03,661 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-12-14 14:28:03,662 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-12-14 14:28:03,662 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-12-14 14:28:03,663 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-12-14 14:28:03,663 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-12-14 14:28:03,664 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-12-14 14:28:03,665 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-12-14 14:28:03,666 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-12-14 14:28:03,666 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-12-14 14:28:03,667 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-12-14 14:28:03,668 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-12-14 14:28:03,669 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-12-14 14:28:03,670 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-12-14 14:28:03,671 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-12-14 14:28:03,672 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-12-14 14:28:03,673 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-12-14 14:28:03,675 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-12-14 14:28:03,675 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-12-14 14:28:03,675 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-12-14 14:28:03,676 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-12-14 14:28:03,676 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-12-14 14:28:03,677 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-12-14 14:28:03,677 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-12-14 14:28:03,678 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-12-14 14:28:03,678 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-12-14 14:28:03,679 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-12-14 14:28:03,679 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-12-14 14:28:03,679 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-12-14 14:28:03,680 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-12-14 14:28:03,680 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-12-14 14:28:03,680 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-12-14 14:28:03,681 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-12-14 14:28:03,681 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-12-14 14:28:03,682 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9d5b96-39d7-4a28-96e8-aeb705b82d27/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf
[2022-12-14 14:28:03,696 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-12-14 14:28:03,696 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-12-14 14:28:03,697 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-12-14 14:28:03,697 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-12-14 14:28:03,697 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-12-14 14:28:03,697 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-12-14 14:28:03,697 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2022-12-14 14:28:03,698 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2022-12-14 14:28:03,698 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2022-12-14 14:28:03,698 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2022-12-14 14:28:03,698 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2022-12-14 14:28:03,698 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2022-12-14 14:28:03,698 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2022-12-14 14:28:03,698 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2022-12-14 14:28:03,698 INFO  L138        SettingsManager]:  * Interval Domain=false
[2022-12-14 14:28:03,699 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2022-12-14 14:28:03,699 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2022-12-14 14:28:03,699 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2022-12-14 14:28:03,699 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-12-14 14:28:03,699 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-12-14 14:28:03,700 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-12-14 14:28:03,700 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-12-14 14:28:03,700 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-12-14 14:28:03,700 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-12-14 14:28:03,700 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-12-14 14:28:03,700 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-12-14 14:28:03,700 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-12-14 14:28:03,700 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-12-14 14:28:03,700 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-12-14 14:28:03,701 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-12-14 14:28:03,701 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-12-14 14:28:03,701 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-12-14 14:28:03,701 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 14:28:03,701 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-12-14 14:28:03,701 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2022-12-14 14:28:03,701 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-12-14 14:28:03,701 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-12-14 14:28:03,701 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2022-12-14 14:28:03,702 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-12-14 14:28:03,702 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-12-14 14:28:03,702 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-12-14 14:28:03,702 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_ef9d5b96-39d7-4a28-96e8-aeb705b82d27/bin/utaipan-gh47qXpMRh/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_ef9d5b96-39d7-4a28-96e8-aeb705b82d27/bin/utaipan-gh47qXpMRh
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 -> Taipan
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 -> 300dca2efecc5c8214152db2a6b2d689ec4c315eac2b659302619d92ad8af6b0
[2022-12-14 14:28:03,876 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-12-14 14:28:03,892 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-12-14 14:28:03,894 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-12-14 14:28:03,895 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-12-14 14:28:03,895 INFO  L275        PluginConnector]: CDTParser initialized
[2022-12-14 14:28:03,897 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9d5b96-39d7-4a28-96e8-aeb705b82d27/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/eca-rers2012/Problem07_label52.c
[2022-12-14 14:28:06,411 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-12-14 14:28:07,530 INFO  L351              CDTParser]: Found 1 translation units.
[2022-12-14 14:28:07,531 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9d5b96-39d7-4a28-96e8-aeb705b82d27/sv-benchmarks/c/eca-rers2012/Problem07_label52.c
[2022-12-14 14:28:07,666 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9d5b96-39d7-4a28-96e8-aeb705b82d27/bin/utaipan-gh47qXpMRh/data/606fd80f0/1f7907c08fb346c4b7bd41e5002ab6d8/FLAG34df2a204
[2022-12-14 14:28:07,987 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9d5b96-39d7-4a28-96e8-aeb705b82d27/bin/utaipan-gh47qXpMRh/data/606fd80f0/1f7907c08fb346c4b7bd41e5002ab6d8
[2022-12-14 14:28:07,989 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-12-14 14:28:07,990 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-12-14 14:28:07,991 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-12-14 14:28:07,991 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-12-14 14:28:07,995 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-12-14 14:28:07,995 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:28:07" (1/1) ...
[2022-12-14 14:28:07,996 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62200375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:07, skipping insertion in model container
[2022-12-14 14:28:07,996 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:28:07" (1/1) ...
[2022-12-14 14:28:08,002 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-12-14 14:28:08,609 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-12-14 14:28:18,301 WARN  L237   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9d5b96-39d7-4a28-96e8-aeb705b82d27/sv-benchmarks/c/eca-rers2012/Problem07_label52.c[2776488,2776501]
[2022-12-14 14:28:18,349 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 14:28:18,356 INFO  L203         MainTranslator]: Completed pre-run
[2022-12-14 14:28:24,221 WARN  L237   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9d5b96-39d7-4a28-96e8-aeb705b82d27/sv-benchmarks/c/eca-rers2012/Problem07_label52.c[2776488,2776501]
[2022-12-14 14:28:24,224 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 14:28:24,799 INFO  L208         MainTranslator]: Completed translation
[2022-12-14 14:28:24,799 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:24 WrapperNode
[2022-12-14 14:28:24,799 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-12-14 14:28:24,800 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-12-14 14:28:24,800 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-12-14 14:28:24,800 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-12-14 14:28:24,804 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:24" (1/1) ...
[2022-12-14 14:28:25,130 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:24" (1/1) ...
[2022-12-14 14:28:26,373 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2022-12-14 14:28:26,373 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-12-14 14:28:26,374 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-12-14 14:28:26,374 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-12-14 14:28:26,374 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-12-14 14:28:26,382 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:24" (1/1) ...
[2022-12-14 14:28:26,383 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:24" (1/1) ...
[2022-12-14 14:28:26,637 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:24" (1/1) ...
[2022-12-14 14:28:26,637 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:24" (1/1) ...
[2022-12-14 14:28:27,221 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:24" (1/1) ...
[2022-12-14 14:28:27,347 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:24" (1/1) ...
[2022-12-14 14:28:27,569 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:24" (1/1) ...
[2022-12-14 14:28:27,628 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:24" (1/1) ...
[2022-12-14 14:28:27,894 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-12-14 14:28:27,894 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-12-14 14:28:27,894 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-12-14 14:28:27,895 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-12-14 14:28:27,895 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:24" (1/1) ...
[2022-12-14 14:28:27,901 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 14:28:27,909 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9d5b96-39d7-4a28-96e8-aeb705b82d27/bin/utaipan-gh47qXpMRh/z3
[2022-12-14 14:28:27,920 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9d5b96-39d7-4a28-96e8-aeb705b82d27/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-12-14 14:28:27,922 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9d5b96-39d7-4a28-96e8-aeb705b82d27/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-12-14 14:28:27,950 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-12-14 14:28:27,950 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-12-14 14:28:27,950 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-12-14 14:28:27,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-12-14 14:28:28,055 INFO  L235             CfgBuilder]: Building ICFG
[2022-12-14 14:28:28,057 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-12-14 14:28:58,248 INFO  L276             CfgBuilder]: Performing block encoding
[2022-12-14 14:28:58,979 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-12-14 14:28:58,979 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-12-14 14:28:58,988 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:28:58 BoogieIcfgContainer
[2022-12-14 14:28:58,988 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-12-14 14:28:58,990 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-12-14 14:28:58,990 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-12-14 14:28:58,993 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-12-14 14:28:58,993 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:28:07" (1/3) ...
[2022-12-14 14:28:58,993 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f6ad90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:28:58, skipping insertion in model container
[2022-12-14 14:28:58,993 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:24" (2/3) ...
[2022-12-14 14:28:58,994 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f6ad90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:28:58, skipping insertion in model container
[2022-12-14 14:28:58,994 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:28:58" (3/3) ...
[2022-12-14 14:28:58,995 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem07_label52.c
[2022-12-14 14:28:59,010 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-12-14 14:28:59,010 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-12-14 14:28:59,127 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-12-14 14:28:59,132 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@29385d73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-12-14 14:28:59,132 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-12-14 14:28:59,155 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10135 states, 10133 states have (on average 1.9951643146156124) internal successors, (20217), 10134 states have internal predecessors, (20217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:29:00,053 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10086
[2022-12-14 14:29:00,053 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:29:00,057 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 14:29:00,058 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:29:00,062 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:29:00,065 INFO  L85        PathProgramCache]: Analyzing trace with hash 184884729, now seen corresponding path program 1 times
[2022-12-14 14:29:00,072 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:29:00,072 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189340115]
[2022-12-14 14:29:00,075 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:29:00,075 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:29:02,239 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:29:30,734 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 14:29:30,735 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:29:30,735 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189340115]
[2022-12-14 14:29:30,736 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189340115] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:29:30,736 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:29:30,738 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:29:30,739 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842185065]
[2022-12-14 14:29:30,740 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:29:30,755 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:29:30,755 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:29:30,795 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:29:30,796 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:29:30,827 INFO  L87              Difference]: Start difference. First operand  has 10135 states, 10133 states have (on average 1.9951643146156124) internal successors, (20217), 10134 states have internal predecessors, (20217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:30:01,648 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:30:01,648 INFO  L93              Difference]: Finished difference Result 30401 states and 60647 transitions.
[2022-12-14 14:30:01,649 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:30:01,652 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 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 10085
[2022-12-14 14:30:01,669 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:30:01,731 INFO  L225             Difference]: With dead ends: 30401
[2022-12-14 14:30:01,731 INFO  L226             Difference]: Without dead ends: 20263
[2022-12-14 14:30:01,745 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:30:01,748 INFO  L413           NwaCegarLoop]: 4042 mSDtfsCounter, 416 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 30830 mSolverCounterSat, 12469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 4092 SdHoareTripleChecker+Invalid, 43299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12469 IncrementalHoareTripleChecker+Valid, 30830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.2s IncrementalHoareTripleChecker+Time
[2022-12-14 14:30:01,749 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 4092 Invalid, 43299 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12469 Valid, 30830 Invalid, 0 Unknown, 0 Unchecked, 30.2s Time]
[2022-12-14 14:30:01,782 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20263 states.
[2022-12-14 14:30:02,075 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20263 to 20263.
[2022-12-14 14:30:02,106 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20263 states, 20262 states have (on average 1.799279439344586) internal successors, (36457), 20262 states have internal predecessors, (36457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:30:02,141 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20263 states to 20263 states and 36457 transitions.
[2022-12-14 14:30:02,143 INFO  L78                 Accepts]: Start accepts. Automaton has 20263 states and 36457 transitions. Word has length 10085
[2022-12-14 14:30:02,153 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:30:02,154 INFO  L495      AbstractCegarLoop]: Abstraction has 20263 states and 36457 transitions.
[2022-12-14 14:30:02,156 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:30:02,157 INFO  L276                IsEmpty]: Start isEmpty. Operand 20263 states and 36457 transitions.
[2022-12-14 14:30:02,787 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10090
[2022-12-14 14:30:02,787 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:30:02,789 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 14:30:02,790 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-12-14 14:30:02,790 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:30:02,791 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:30:02,794 INFO  L85        PathProgramCache]: Analyzing trace with hash 987459489, now seen corresponding path program 1 times
[2022-12-14 14:30:02,794 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:30:02,794 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772228217]
[2022-12-14 14:30:02,796 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:30:02,796 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:30:03,840 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:30:26,639 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 14:30:26,640 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:30:26,640 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772228217]
[2022-12-14 14:30:26,640 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772228217] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:30:26,640 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:30:26,641 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:30:26,641 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885367535]
[2022-12-14 14:30:26,641 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:30:26,653 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:30:26,653 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:30:26,660 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:30:26,660 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:30:26,663 INFO  L87              Difference]: Start difference. First operand 20263 states and 36457 transitions. Second operand  has 3 states, 3 states have (on average 3363.0) internal successors, (10089), 2 states have internal predecessors, (10089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:30:55,182 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:30:55,182 INFO  L93              Difference]: Finished difference Result 60785 states and 109368 transitions.
[2022-12-14 14:30:55,182 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:30:55,184 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3363.0) internal successors, (10089), 2 states have internal predecessors, (10089), 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 10089
[2022-12-14 14:30:55,184 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:30:55,242 INFO  L225             Difference]: With dead ends: 60785
[2022-12-14 14:30:55,242 INFO  L226             Difference]: Without dead ends: 40523
[2022-12-14 14:30:55,256 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:30:55,257 INFO  L413           NwaCegarLoop]: 4825 mSDtfsCounter, 13805 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 28583 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13805 SdHoareTripleChecker+Valid, 4873 SdHoareTripleChecker+Invalid, 40341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time
[2022-12-14 14:30:55,257 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13805 Valid, 4873 Invalid, 40341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28583 Invalid, 0 Unknown, 0 Unchecked, 28.0s Time]
[2022-12-14 14:30:55,285 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40523 states.
[2022-12-14 14:30:55,706 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40523 to 40523.
[2022-12-14 14:30:55,738 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40523 states, 40522 states have (on average 1.610680617935936) internal successors, (65268), 40522 states have internal predecessors, (65268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:30:55,786 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40523 states to 40523 states and 65268 transitions.
[2022-12-14 14:30:55,786 INFO  L78                 Accepts]: Start accepts. Automaton has 40523 states and 65268 transitions. Word has length 10089
[2022-12-14 14:30:55,787 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:30:55,787 INFO  L495      AbstractCegarLoop]: Abstraction has 40523 states and 65268 transitions.
[2022-12-14 14:30:55,788 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3363.0) internal successors, (10089), 2 states have internal predecessors, (10089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:30:55,789 INFO  L276                IsEmpty]: Start isEmpty. Operand 40523 states and 65268 transitions.
[2022-12-14 14:30:56,362 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10092
[2022-12-14 14:30:56,362 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:30:56,365 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2022-12-14 14:30:56,365 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-12-14 14:30:56,365 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:30:56,365 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:30:56,367 INFO  L85        PathProgramCache]: Analyzing trace with hash -1568620676, now seen corresponding path program 1 times
[2022-12-14 14:30:56,367 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:30:56,367 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994456711]
[2022-12-14 14:30:56,368 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:30:56,368 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:30:57,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:31:19,270 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 14:31:19,270 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:31:19,270 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994456711]
[2022-12-14 14:31:19,270 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994456711] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:31:19,270 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:31:19,271 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:31:19,271 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022468119]
[2022-12-14 14:31:19,271 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:31:19,276 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:31:19,276 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:31:19,280 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:31:19,280 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:31:19,282 INFO  L87              Difference]: Start difference. First operand 40523 states and 65268 transitions. Second operand  has 3 states, 3 states have (on average 3363.6666666666665) internal successors, (10091), 2 states have internal predecessors, (10091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:31:48,099 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:31:48,099 INFO  L93              Difference]: Finished difference Result 121565 states and 195801 transitions.
[2022-12-14 14:31:48,099 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:31:48,101 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3363.6666666666665) internal successors, (10091), 2 states have internal predecessors, (10091), 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 10091
[2022-12-14 14:31:48,101 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:31:48,174 INFO  L225             Difference]: With dead ends: 121565
[2022-12-14 14:31:48,174 INFO  L226             Difference]: Without dead ends: 81043
[2022-12-14 14:31:48,200 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:31:48,201 INFO  L413           NwaCegarLoop]: 4817 mSDtfsCounter, 13625 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 28708 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13625 SdHoareTripleChecker+Valid, 4865 SdHoareTripleChecker+Invalid, 40385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 28708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time
[2022-12-14 14:31:48,201 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13625 Valid, 4865 Invalid, 40385 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 28708 Invalid, 0 Unknown, 0 Unchecked, 28.1s Time]
[2022-12-14 14:31:48,252 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81043 states.
[2022-12-14 14:31:48,887 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81043 to 81043.
[2022-12-14 14:31:48,943 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81043 states, 81042 states have (on average 1.467288566422349) internal successors, (118912), 81042 states have internal predecessors, (118912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:31:49,033 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81043 states to 81043 states and 118912 transitions.
[2022-12-14 14:31:49,034 INFO  L78                 Accepts]: Start accepts. Automaton has 81043 states and 118912 transitions. Word has length 10091
[2022-12-14 14:31:49,035 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:31:49,035 INFO  L495      AbstractCegarLoop]: Abstraction has 81043 states and 118912 transitions.
[2022-12-14 14:31:49,036 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3363.6666666666665) internal successors, (10091), 2 states have internal predecessors, (10091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:31:49,036 INFO  L276                IsEmpty]: Start isEmpty. Operand 81043 states and 118912 transitions.
[2022-12-14 14:31:49,665 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10103
[2022-12-14 14:31:49,665 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:31:49,668 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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]
[2022-12-14 14:31:49,668 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-12-14 14:31:49,668 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:31:49,669 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:31:49,670 INFO  L85        PathProgramCache]: Analyzing trace with hash -311125797, now seen corresponding path program 1 times
[2022-12-14 14:31:49,670 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:31:49,670 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232032816]
[2022-12-14 14:31:49,671 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:31:49,671 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:31:50,703 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:32:14,928 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2022-12-14 14:32:14,928 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:32:14,928 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232032816]
[2022-12-14 14:32:14,928 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232032816] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:32:14,928 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:32:14,929 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:32:14,929 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852531140]
[2022-12-14 14:32:14,929 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:32:14,938 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:32:14,939 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:32:14,943 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:32:14,943 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:32:14,946 INFO  L87              Difference]: Start difference. First operand 81043 states and 118912 transitions. Second operand  has 3 states, 3 states have (on average 3365.6666666666665) internal successors, (10097), 2 states have internal predecessors, (10097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:32:44,850 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:32:44,850 INFO  L93              Difference]: Finished difference Result 243125 states and 356733 transitions.
[2022-12-14 14:32:44,851 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:32:44,852 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3365.6666666666665) internal successors, (10097), 2 states have internal predecessors, (10097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10102
[2022-12-14 14:32:44,852 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:32:45,010 INFO  L225             Difference]: With dead ends: 243125
[2022-12-14 14:32:45,010 INFO  L226             Difference]: Without dead ends: 162083
[2022-12-14 14:32:45,048 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:32:45,049 INFO  L413           NwaCegarLoop]: 6088 mSDtfsCounter, 13413 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 27411 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13413 SdHoareTripleChecker+Valid, 6136 SdHoareTripleChecker+Invalid, 40441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.0s IncrementalHoareTripleChecker+Time
[2022-12-14 14:32:45,049 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13413 Valid, 6136 Invalid, 40441 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27411 Invalid, 0 Unknown, 0 Unchecked, 29.0s Time]
[2022-12-14 14:32:45,199 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 162083 states.
[2022-12-14 14:32:46,315 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 162083 to 162083.
[2022-12-14 14:32:46,420 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 162083 states, 162082 states have (on average 1.3329549240507892) internal successors, (216048), 162082 states have internal predecessors, (216048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:32:46,600 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 162083 states to 162083 states and 216048 transitions.
[2022-12-14 14:32:46,600 INFO  L78                 Accepts]: Start accepts. Automaton has 162083 states and 216048 transitions. Word has length 10102
[2022-12-14 14:32:46,601 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:32:46,601 INFO  L495      AbstractCegarLoop]: Abstraction has 162083 states and 216048 transitions.
[2022-12-14 14:32:46,602 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3365.6666666666665) internal successors, (10097), 2 states have internal predecessors, (10097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:32:46,603 INFO  L276                IsEmpty]: Start isEmpty. Operand 162083 states and 216048 transitions.
[2022-12-14 14:32:47,550 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10134
[2022-12-14 14:32:47,550 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:32:47,552 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 14:32:47,553 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-12-14 14:32:47,553 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:32:47,553 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:32:47,555 INFO  L85        PathProgramCache]: Analyzing trace with hash -1925091213, now seen corresponding path program 1 times
[2022-12-14 14:32:47,555 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:32:47,555 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407352730]
[2022-12-14 14:32:47,556 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:32:47,556 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:32:48,598 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:33:10,223 INFO  L134       CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 14:33:10,224 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:33:10,224 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407352730]
[2022-12-14 14:33:10,224 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407352730] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:33:10,224 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:33:10,225 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:33:10,225 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111202061]
[2022-12-14 14:33:10,225 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:33:10,229 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:33:10,229 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:33:10,234 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:33:10,234 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:33:10,236 INFO  L87              Difference]: Start difference. First operand 162083 states and 216048 transitions. Second operand  has 3 states, 3 states have (on average 3377.6666666666665) internal successors, (10133), 2 states have internal predecessors, (10133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:33:40,321 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:33:40,321 INFO  L93              Difference]: Finished difference Result 486245 states and 648141 transitions.
[2022-12-14 14:33:40,321 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:33:40,323 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3377.6666666666665) internal successors, (10133), 2 states have internal predecessors, (10133), 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 10133
[2022-12-14 14:33:40,323 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:33:40,796 INFO  L225             Difference]: With dead ends: 486245
[2022-12-14 14:33:40,796 INFO  L226             Difference]: Without dead ends: 324163
[2022-12-14 14:33:40,866 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:33:40,866 INFO  L413           NwaCegarLoop]: 7309 mSDtfsCounter, 11709 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 30394 mSolverCounterSat, 11081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11709 SdHoareTripleChecker+Valid, 7357 SdHoareTripleChecker+Invalid, 41475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11081 IncrementalHoareTripleChecker+Valid, 30394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.6s IncrementalHoareTripleChecker+Time
[2022-12-14 14:33:40,867 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11709 Valid, 7357 Invalid, 41475 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11081 Valid, 30394 Invalid, 0 Unknown, 0 Unchecked, 28.6s Time]
[2022-12-14 14:33:41,071 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 324163 states.
[2022-12-14 14:33:43,450 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 324163 to 324163.
[2022-12-14 14:33:43,583 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 324163 states, 324162 states have (on average 1.255440181143996) internal successors, (406966), 324162 states have internal predecessors, (406966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:33:44,079 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 324163 states to 324163 states and 406966 transitions.
[2022-12-14 14:33:44,080 INFO  L78                 Accepts]: Start accepts. Automaton has 324163 states and 406966 transitions. Word has length 10133
[2022-12-14 14:33:44,080 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:33:44,081 INFO  L495      AbstractCegarLoop]: Abstraction has 324163 states and 406966 transitions.
[2022-12-14 14:33:44,082 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3377.6666666666665) internal successors, (10133), 2 states have internal predecessors, (10133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:33:44,082 INFO  L276                IsEmpty]: Start isEmpty. Operand 324163 states and 406966 transitions.
[2022-12-14 14:33:45,028 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10190
[2022-12-14 14:33:45,028 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:33:45,030 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2022-12-14 14:33:45,031 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-12-14 14:33:45,031 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:33:45,031 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:33:45,033 INFO  L85        PathProgramCache]: Analyzing trace with hash 510459481, now seen corresponding path program 1 times
[2022-12-14 14:33:45,033 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:33:45,033 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553852500]
[2022-12-14 14:33:45,035 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:33:45,035 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:33:46,123 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:34:07,943 INFO  L134       CoverageAnalysis]: Checked inductivity of 106 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-12-14 14:34:07,943 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:34:07,943 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553852500]
[2022-12-14 14:34:07,944 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553852500] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:34:07,944 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:34:07,945 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:34:07,945 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154515271]
[2022-12-14 14:34:07,945 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:34:07,952 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:34:07,952 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:34:07,959 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:34:07,959 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:34:07,962 INFO  L87              Difference]: Start difference. First operand 324163 states and 406966 transitions. Second operand  has 3 states, 3 states have (on average 3395.3333333333335) internal successors, (10186), 2 states have internal predecessors, (10186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:34:40,325 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:34:40,325 INFO  L93              Difference]: Finished difference Result 972485 states and 1220895 transitions.
[2022-12-14 14:34:40,325 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:34:40,327 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3395.3333333333335) internal successors, (10186), 2 states have internal predecessors, (10186), 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 10189
[2022-12-14 14:34:40,327 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:34:41,070 INFO  L225             Difference]: With dead ends: 972485
[2022-12-14 14:34:41,070 INFO  L226             Difference]: Without dead ends: 648323
[2022-12-14 14:34:41,193 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:34:41,194 INFO  L413           NwaCegarLoop]: 5911 mSDtfsCounter, 12499 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 29708 mSolverCounterSat, 11034 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12499 SdHoareTripleChecker+Valid, 5959 SdHoareTripleChecker+Invalid, 40742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11034 IncrementalHoareTripleChecker+Valid, 29708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.4s IncrementalHoareTripleChecker+Time
[2022-12-14 14:34:41,194 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12499 Valid, 5959 Invalid, 40742 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11034 Valid, 29708 Invalid, 0 Unknown, 0 Unchecked, 29.4s Time]
[2022-12-14 14:34:41,559 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 648323 states.
[2022-12-14 14:34:46,228 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 648323 to 648323.
[2022-12-14 14:34:46,461 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 648323 states, 648322 states have (on average 1.1914727558219527) internal successors, (772458), 648322 states have internal predecessors, (772458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:34:47,530 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 648323 states to 648323 states and 772458 transitions.
[2022-12-14 14:34:47,530 INFO  L78                 Accepts]: Start accepts. Automaton has 648323 states and 772458 transitions. Word has length 10189
[2022-12-14 14:34:47,531 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:34:47,531 INFO  L495      AbstractCegarLoop]: Abstraction has 648323 states and 772458 transitions.
[2022-12-14 14:34:47,532 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3395.3333333333335) internal successors, (10186), 2 states have internal predecessors, (10186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:34:47,532 INFO  L276                IsEmpty]: Start isEmpty. Operand 648323 states and 772458 transitions.
[2022-12-14 14:34:48,740 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10321
[2022-12-14 14:34:48,740 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:34:48,742 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 14:34:48,742 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-12-14 14:34:48,742 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:34:48,742 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:34:48,743 INFO  L85        PathProgramCache]: Analyzing trace with hash 1333331464, now seen corresponding path program 1 times
[2022-12-14 14:34:48,744 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:34:48,744 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988828821]
[2022-12-14 14:34:48,744 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:34:48,744 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:34:49,847 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:35:24,144 INFO  L134       CoverageAnalysis]: Checked inductivity of 233 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 14:35:24,144 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:35:24,145 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988828821]
[2022-12-14 14:35:24,145 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988828821] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:35:24,145 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:35:24,145 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:35:24,146 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674524407]
[2022-12-14 14:35:24,146 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:35:24,149 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:35:24,149 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:35:24,154 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:35:24,154 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:35:24,156 INFO  L87              Difference]: Start difference. First operand 648323 states and 772458 transitions. Second operand  has 3 states, 3 states have (on average 3440.0) internal successors, (10320), 2 states have internal predecessors, (10320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:35:52,766 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:35:52,766 INFO  L93              Difference]: Finished difference Result 1296645 states and 1544915 transitions.
[2022-12-14 14:35:52,766 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:35:52,768 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3440.0) internal successors, (10320), 2 states have internal predecessors, (10320), 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 10320
[2022-12-14 14:35:52,768 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:35:53,454 INFO  L225             Difference]: With dead ends: 1296645
[2022-12-14 14:35:53,455 INFO  L226             Difference]: Without dead ends: 648323
[2022-12-14 14:35:53,662 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:35:53,662 INFO  L413           NwaCegarLoop]: 9994 mSDtfsCounter, 9977 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 29469 mSolverCounterSat, 4825 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9977 SdHoareTripleChecker+Valid, 10042 SdHoareTripleChecker+Invalid, 34294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4825 IncrementalHoareTripleChecker+Valid, 29469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time
[2022-12-14 14:35:53,662 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9977 Valid, 10042 Invalid, 34294 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4825 Valid, 29469 Invalid, 0 Unknown, 0 Unchecked, 25.3s Time]
[2022-12-14 14:35:54,216 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 648323 states.
[2022-12-14 14:35:59,016 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 648323 to 648323.
[2022-12-14 14:35:59,296 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 648323 states, 648322 states have (on average 1.1907323829825303) internal successors, (771978), 648322 states have internal predecessors, (771978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:36:00,489 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 648323 states to 648323 states and 771978 transitions.
[2022-12-14 14:36:00,489 INFO  L78                 Accepts]: Start accepts. Automaton has 648323 states and 771978 transitions. Word has length 10320
[2022-12-14 14:36:00,490 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:36:00,490 INFO  L495      AbstractCegarLoop]: Abstraction has 648323 states and 771978 transitions.
[2022-12-14 14:36:00,491 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3440.0) internal successors, (10320), 2 states have internal predecessors, (10320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:36:00,491 INFO  L276                IsEmpty]: Start isEmpty. Operand 648323 states and 771978 transitions.
[2022-12-14 14:36:01,749 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10511
[2022-12-14 14:36:01,749 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:36:01,751 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-12-14 14:36:01,751 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-12-14 14:36:01,751 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:36:01,752 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:36:01,753 INFO  L85        PathProgramCache]: Analyzing trace with hash -1031166877, now seen corresponding path program 1 times
[2022-12-14 14:36:01,753 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:36:01,754 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027687239]
[2022-12-14 14:36:01,755 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:36:01,755 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:36:03,245 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:36:34,594 INFO  L134       CoverageAnalysis]: Checked inductivity of 423 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 14:36:34,594 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:36:34,594 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027687239]
[2022-12-14 14:36:34,594 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027687239] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:36:34,594 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:36:34,595 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:36:34,595 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190097537]
[2022-12-14 14:36:34,595 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:36:34,599 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:36:34,599 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:36:34,603 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:36:34,603 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:36:34,605 INFO  L87              Difference]: Start difference. First operand 648323 states and 771978 transitions. Second operand  has 3 states, 3 states have (on average 3503.3333333333335) internal successors, (10510), 2 states have internal predecessors, (10510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:37:05,827 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 14:37:05,827 INFO  L93              Difference]: Finished difference Result 1620805 states and 1911307 transitions.
[2022-12-14 14:37:05,828 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 14:37:05,829 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3503.3333333333335) internal successors, (10510), 2 states have internal predecessors, (10510), 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 10510
[2022-12-14 14:37:05,829 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 14:37:06,993 INFO  L225             Difference]: With dead ends: 1620805
[2022-12-14 14:37:06,993 INFO  L226             Difference]: Without dead ends: 972483
[2022-12-14 14:37:07,202 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:37:07,203 INFO  L413           NwaCegarLoop]: 10007 mSDtfsCounter, 9760 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 30619 mSolverCounterSat, 6484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9760 SdHoareTripleChecker+Valid, 10055 SdHoareTripleChecker+Invalid, 37103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6484 IncrementalHoareTripleChecker+Valid, 30619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.9s IncrementalHoareTripleChecker+Time
[2022-12-14 14:37:07,203 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9760 Valid, 10055 Invalid, 37103 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6484 Valid, 30619 Invalid, 0 Unknown, 0 Unchecked, 26.9s Time]
[2022-12-14 14:37:07,929 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 972483 states.
[2022-12-14 14:37:15,225 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 972483 to 972483.
[2022-12-14 14:37:15,651 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 972483 states, 972482 states have (on average 1.1497529003107512) internal successors, (1118114), 972482 states have internal predecessors, (1118114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:37:17,367 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 972483 states to 972483 states and 1118114 transitions.
[2022-12-14 14:37:17,367 INFO  L78                 Accepts]: Start accepts. Automaton has 972483 states and 1118114 transitions. Word has length 10510
[2022-12-14 14:37:17,368 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 14:37:17,369 INFO  L495      AbstractCegarLoop]: Abstraction has 972483 states and 1118114 transitions.
[2022-12-14 14:37:17,371 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3503.3333333333335) internal successors, (10510), 2 states have internal predecessors, (10510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 14:37:17,371 INFO  L276                IsEmpty]: Start isEmpty. Operand 972483 states and 1118114 transitions.
[2022-12-14 14:37:19,465 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10634
[2022-12-14 14:37:19,465 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 14:37:19,466 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2022-12-14 14:37:19,466 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-12-14 14:37:19,467 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 14:37:19,467 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 14:37:19,468 INFO  L85        PathProgramCache]: Analyzing trace with hash -1470906458, now seen corresponding path program 1 times
[2022-12-14 14:37:19,468 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 14:37:19,468 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229448974]
[2022-12-14 14:37:19,469 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 14:37:19,469 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 14:37:20,674 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 14:37:46,834 INFO  L134       CoverageAnalysis]: Checked inductivity of 592 backedges. 544 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked.
[2022-12-14 14:37:46,835 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 14:37:46,835 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229448974]
[2022-12-14 14:37:46,835 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229448974] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 14:37:46,835 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 14:37:46,836 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 14:37:46,836 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835457471]
[2022-12-14 14:37:46,837 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 14:37:46,843 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 14:37:46,843 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 14:37:46,849 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 14:37:46,850 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 14:37:46,852 INFO  L87              Difference]: Start difference. First operand 972483 states and 1118114 transitions. Second operand  has 3 states, 3 states have (on average 3528.6666666666665) internal successors, (10586), 2 states have internal predecessors, (10586), 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)