./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label03.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 2329fc70
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f8fd53-dbf5-47cb-8f35-74ed993d63e9/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f8fd53-dbf5-47cb-8f35-74ed993d63e9/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_39f8fd53-dbf5-47cb-8f35-74ed993d63e9/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f8fd53-dbf5-47cb-8f35-74ed993d63e9/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f8fd53-dbf5-47cb-8f35-74ed993d63e9/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_39f8fd53-dbf5-47cb-8f35-74ed993d63e9/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 138fe3363990224d4ee1c993f67206032b375644ce625e0beb4bc6a3fb870415
--- 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 08:31:03,413 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-12-14 08:31:03,416 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-12-14 08:31:03,431 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-12-14 08:31:03,431 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-12-14 08:31:03,432 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-12-14 08:31:03,433 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-12-14 08:31:03,434 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-12-14 08:31:03,435 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-12-14 08:31:03,435 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-12-14 08:31:03,436 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-12-14 08:31:03,437 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-12-14 08:31:03,437 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-12-14 08:31:03,438 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-12-14 08:31:03,438 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-12-14 08:31:03,439 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-12-14 08:31:03,440 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-12-14 08:31:03,441 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-12-14 08:31:03,442 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-12-14 08:31:03,443 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-12-14 08:31:03,444 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-12-14 08:31:03,445 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-12-14 08:31:03,446 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-12-14 08:31:03,446 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-12-14 08:31:03,449 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-12-14 08:31:03,449 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-12-14 08:31:03,449 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-12-14 08:31:03,450 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-12-14 08:31:03,450 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-12-14 08:31:03,451 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-12-14 08:31:03,451 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-12-14 08:31:03,452 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-12-14 08:31:03,452 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-12-14 08:31:03,453 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-12-14 08:31:03,453 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-12-14 08:31:03,454 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-12-14 08:31:03,454 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-12-14 08:31:03,455 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-12-14 08:31:03,455 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-12-14 08:31:03,455 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-12-14 08:31:03,456 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-12-14 08:31:03,457 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f8fd53-dbf5-47cb-8f35-74ed993d63e9/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf
[2022-12-14 08:31:03,473 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-12-14 08:31:03,473 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-12-14 08:31:03,473 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-12-14 08:31:03,473 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-12-14 08:31:03,474 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-12-14 08:31:03,474 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-12-14 08:31:03,474 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2022-12-14 08:31:03,474 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2022-12-14 08:31:03,474 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2022-12-14 08:31:03,474 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2022-12-14 08:31:03,475 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2022-12-14 08:31:03,475 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2022-12-14 08:31:03,475 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2022-12-14 08:31:03,475 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2022-12-14 08:31:03,475 INFO  L138        SettingsManager]:  * Interval Domain=false
[2022-12-14 08:31:03,475 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2022-12-14 08:31:03,475 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2022-12-14 08:31:03,475 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2022-12-14 08:31:03,476 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-12-14 08:31:03,476 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-12-14 08:31:03,476 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-12-14 08:31:03,476 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-12-14 08:31:03,476 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-12-14 08:31:03,477 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-12-14 08:31:03,477 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-12-14 08:31:03,477 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-12-14 08:31:03,477 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-12-14 08:31:03,477 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-12-14 08:31:03,477 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-12-14 08:31:03,477 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-12-14 08:31:03,477 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-12-14 08:31:03,477 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-12-14 08:31:03,478 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 08:31:03,478 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-12-14 08:31:03,478 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2022-12-14 08:31:03,478 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-12-14 08:31:03,478 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-12-14 08:31:03,478 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2022-12-14 08:31:03,478 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-12-14 08:31:03,478 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-12-14 08:31:03,479 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-12-14 08:31:03,479 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_39f8fd53-dbf5-47cb-8f35-74ed993d63e9/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_39f8fd53-dbf5-47cb-8f35-74ed993d63e9/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 -> 138fe3363990224d4ee1c993f67206032b375644ce625e0beb4bc6a3fb870415
[2022-12-14 08:31:03,656 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-12-14 08:31:03,672 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-12-14 08:31:03,674 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-12-14 08:31:03,675 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-12-14 08:31:03,675 INFO  L275        PluginConnector]: CDTParser initialized
[2022-12-14 08:31:03,676 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f8fd53-dbf5-47cb-8f35-74ed993d63e9/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/eca-rers2012/Problem07_label03.c
[2022-12-14 08:31:06,162 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-12-14 08:31:07,125 INFO  L351              CDTParser]: Found 1 translation units.
[2022-12-14 08:31:07,125 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f8fd53-dbf5-47cb-8f35-74ed993d63e9/sv-benchmarks/c/eca-rers2012/Problem07_label03.c
[2022-12-14 08:31:07,242 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f8fd53-dbf5-47cb-8f35-74ed993d63e9/bin/utaipan-gh47qXpMRh/data/2d48f7dcb/876da35849dd408baba215b79fc18d11/FLAGe4f09ba66
[2022-12-14 08:31:07,718 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f8fd53-dbf5-47cb-8f35-74ed993d63e9/bin/utaipan-gh47qXpMRh/data/2d48f7dcb/876da35849dd408baba215b79fc18d11
[2022-12-14 08:31:07,720 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-12-14 08:31:07,721 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-12-14 08:31:07,722 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-12-14 08:31:07,722 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-12-14 08:31:07,724 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-12-14 08:31:07,725 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:31:07" (1/1) ...
[2022-12-14 08:31:07,726 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10974603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:31:07, skipping insertion in model container
[2022-12-14 08:31:07,726 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:31:07" (1/1) ...
[2022-12-14 08:31:07,731 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-12-14 08:31:08,357 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-12-14 08:31:17,771 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_39f8fd53-dbf5-47cb-8f35-74ed993d63e9/sv-benchmarks/c/eca-rers2012/Problem07_label03.c[2770520,2770533]
[2022-12-14 08:31:17,827 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 08:31:17,834 INFO  L203         MainTranslator]: Completed pre-run
[2022-12-14 08:31:23,656 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_39f8fd53-dbf5-47cb-8f35-74ed993d63e9/sv-benchmarks/c/eca-rers2012/Problem07_label03.c[2770520,2770533]
[2022-12-14 08:31:23,665 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 08:31:24,290 INFO  L208         MainTranslator]: Completed translation
[2022-12-14 08:31:24,290 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:31:24 WrapperNode
[2022-12-14 08:31:24,290 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-12-14 08:31:24,291 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-12-14 08:31:24,291 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-12-14 08:31:24,291 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-12-14 08:31:24,296 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:31:24" (1/1) ...
[2022-12-14 08:31:24,623 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:31:24" (1/1) ...
[2022-12-14 08:31:25,919 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2022-12-14 08:31:25,919 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-12-14 08:31:25,920 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-12-14 08:31:25,920 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-12-14 08:31:25,920 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-12-14 08:31:25,926 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:31:24" (1/1) ...
[2022-12-14 08:31:25,927 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:31:24" (1/1) ...
[2022-12-14 08:31:26,154 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:31:24" (1/1) ...
[2022-12-14 08:31:26,154 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:31:24" (1/1) ...
[2022-12-14 08:31:26,681 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:31:24" (1/1) ...
[2022-12-14 08:31:26,782 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:31:24" (1/1) ...
[2022-12-14 08:31:26,882 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:31:24" (1/1) ...
[2022-12-14 08:31:26,936 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:31:24" (1/1) ...
[2022-12-14 08:31:27,189 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-12-14 08:31:27,190 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-12-14 08:31:27,190 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-12-14 08:31:27,190 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-12-14 08:31:27,191 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:31:24" (1/1) ...
[2022-12-14 08:31:27,196 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 08:31:27,204 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f8fd53-dbf5-47cb-8f35-74ed993d63e9/bin/utaipan-gh47qXpMRh/z3
[2022-12-14 08:31:27,214 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f8fd53-dbf5-47cb-8f35-74ed993d63e9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-12-14 08:31:27,216 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f8fd53-dbf5-47cb-8f35-74ed993d63e9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-12-14 08:31:27,247 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-12-14 08:31:27,247 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-12-14 08:31:27,247 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-12-14 08:31:27,247 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-12-14 08:31:27,351 INFO  L235             CfgBuilder]: Building ICFG
[2022-12-14 08:31:27,352 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-12-14 08:31:57,902 INFO  L276             CfgBuilder]: Performing block encoding
[2022-12-14 08:31:58,584 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-12-14 08:31:58,584 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-12-14 08:31:58,592 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:31:58 BoogieIcfgContainer
[2022-12-14 08:31:58,592 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-12-14 08:31:58,593 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-12-14 08:31:58,593 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-12-14 08:31:58,596 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-12-14 08:31:58,596 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:31:07" (1/3) ...
[2022-12-14 08:31:58,596 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a77407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:31:58, skipping insertion in model container
[2022-12-14 08:31:58,596 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:31:24" (2/3) ...
[2022-12-14 08:31:58,597 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a77407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:31:58, skipping insertion in model container
[2022-12-14 08:31:58,597 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:31:58" (3/3) ...
[2022-12-14 08:31:58,597 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem07_label03.c
[2022-12-14 08:31:58,610 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-12-14 08:31:58,610 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-12-14 08:31:58,733 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-12-14 08:31:58,738 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;@1461029f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-12-14 08:31:58,738 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-12-14 08:31:58,762 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 08:31:59,515 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10086
[2022-12-14 08:31:59,515 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 08:31:59,519 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 08:31:59,519 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 08:31:59,533 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 08:31:59,537 INFO  L85        PathProgramCache]: Analyzing trace with hash 184875769, now seen corresponding path program 1 times
[2022-12-14 08:31:59,543 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 08:31:59,544 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673910033]
[2022-12-14 08:31:59,546 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 08:31:59,546 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 08:32:01,358 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 08:32:31,695 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 08:32:31,696 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 08:32:31,696 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673910033]
[2022-12-14 08:32:31,697 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673910033] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 08:32:31,697 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 08:32:31,699 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 08:32:31,701 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277827074]
[2022-12-14 08:32:31,702 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 08:32:31,720 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 08:32:31,721 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 08:32:31,766 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 08:32:31,767 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 08:32:31,798 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 08:33:01,567 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 08:33:01,567 INFO  L93              Difference]: Finished difference Result 30401 states and 60647 transitions.
[2022-12-14 08:33:01,568 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 08:33:01,571 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 08:33:01,585 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 08:33:01,642 INFO  L225             Difference]: With dead ends: 30401
[2022-12-14 08:33:01,642 INFO  L226             Difference]: Without dead ends: 20263
[2022-12-14 08:33:01,654 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 08:33:01,656 INFO  L413           NwaCegarLoop]: 5063 mSDtfsCounter, 1926 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 33392 mSolverCounterSat, 7007 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1926 SdHoareTripleChecker+Valid, 5113 SdHoareTripleChecker+Invalid, 40399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7007 IncrementalHoareTripleChecker+Valid, 33392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.2s IncrementalHoareTripleChecker+Time
[2022-12-14 08:33:01,657 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1926 Valid, 5113 Invalid, 40399 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7007 Valid, 33392 Invalid, 0 Unknown, 0 Unchecked, 29.2s Time]
[2022-12-14 08:33:01,687 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20263 states.
[2022-12-14 08:33:01,939 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20263 to 20263.
[2022-12-14 08:33:01,964 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20263 states, 20262 states have (on average 1.7489389004046985) internal successors, (35437), 20262 states have internal predecessors, (35437), 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 08:33:01,996 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20263 states to 20263 states and 35437 transitions.
[2022-12-14 08:33:01,997 INFO  L78                 Accepts]: Start accepts. Automaton has 20263 states and 35437 transitions. Word has length 10085
[2022-12-14 08:33:02,006 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 08:33:02,006 INFO  L495      AbstractCegarLoop]: Abstraction has 20263 states and 35437 transitions.
[2022-12-14 08:33:02,008 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 08:33:02,008 INFO  L276                IsEmpty]: Start isEmpty. Operand 20263 states and 35437 transitions.
[2022-12-14 08:33:02,597 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10090
[2022-12-14 08:33:02,597 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 08:33:02,620 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 08:33:02,620 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-12-14 08:33:02,620 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 08:33:02,621 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 08:33:02,624 INFO  L85        PathProgramCache]: Analyzing trace with hash 987450529, now seen corresponding path program 1 times
[2022-12-14 08:33:02,624 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 08:33:02,625 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571199977]
[2022-12-14 08:33:02,626 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 08:33:02,626 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 08:33:03,654 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 08:33:22,238 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 08:33:22,238 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 08:33:22,239 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571199977]
[2022-12-14 08:33:22,239 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571199977] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 08:33:22,239 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 08:33:22,239 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 08:33:22,240 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440230169]
[2022-12-14 08:33:22,240 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 08:33:22,247 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 08:33:22,247 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 08:33:22,254 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 08:33:22,254 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 08:33:22,257 INFO  L87              Difference]: Start difference. First operand 20263 states and 35437 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 08:33:50,397 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 08:33:50,397 INFO  L93              Difference]: Finished difference Result 60785 states and 106308 transitions.
[2022-12-14 08:33:50,397 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 08:33:50,399 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 08:33:50,399 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 08:33:50,455 INFO  L225             Difference]: With dead ends: 60785
[2022-12-14 08:33:50,455 INFO  L226             Difference]: Without dead ends: 40523
[2022-12-14 08:33:50,469 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 08:33:50,470 INFO  L413           NwaCegarLoop]: 4832 mSDtfsCounter, 13805 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 28583 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13805 SdHoareTripleChecker+Valid, 4880 SdHoareTripleChecker+Invalid, 40341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.6s IncrementalHoareTripleChecker+Time
[2022-12-14 08:33:50,470 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13805 Valid, 4880 Invalid, 40341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28583 Invalid, 0 Unknown, 0 Unchecked, 27.6s Time]
[2022-12-14 08:33:50,501 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40523 states.
[2022-12-14 08:33:50,840 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40523 to 40523.
[2022-12-14 08:33:50,870 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40523 states, 40522 states have (on average 1.5715907408321406) internal successors, (63684), 40522 states have internal predecessors, (63684), 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 08:33:50,914 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40523 states to 40523 states and 63684 transitions.
[2022-12-14 08:33:50,914 INFO  L78                 Accepts]: Start accepts. Automaton has 40523 states and 63684 transitions. Word has length 10089
[2022-12-14 08:33:50,915 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 08:33:50,915 INFO  L495      AbstractCegarLoop]: Abstraction has 40523 states and 63684 transitions.
[2022-12-14 08:33:50,917 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 08:33:50,917 INFO  L276                IsEmpty]: Start isEmpty. Operand 40523 states and 63684 transitions.
[2022-12-14 08:33:51,518 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10091
[2022-12-14 08:33:51,519 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 08:33:51,522 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2022-12-14 08:33:51,522 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-12-14 08:33:51,522 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 08:33:51,522 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 08:33:51,524 INFO  L85        PathProgramCache]: Analyzing trace with hash 1936502375, now seen corresponding path program 1 times
[2022-12-14 08:33:51,524 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 08:33:51,525 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395906454]
[2022-12-14 08:33:51,525 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 08:33:51,526 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 08:33:52,526 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 08:34:10,124 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 08:34:10,124 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 08:34:10,124 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395906454]
[2022-12-14 08:34:10,124 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395906454] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 08:34:10,124 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 08:34:10,125 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 08:34:10,125 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870129218]
[2022-12-14 08:34:10,125 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 08:34:10,130 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 08:34:10,130 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 08:34:10,134 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 08:34:10,135 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 08:34:10,136 INFO  L87              Difference]: Start difference. First operand 40523 states and 63684 transitions. Second operand  has 3 states, 3 states have (on average 3363.3333333333335) internal successors, (10090), 2 states have internal predecessors, (10090), 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 08:34:39,460 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 08:34:39,460 INFO  L93              Difference]: Finished difference Result 121565 states and 191049 transitions.
[2022-12-14 08:34:39,460 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 08:34:39,462 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3363.3333333333335) internal successors, (10090), 2 states have internal predecessors, (10090), 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 10090
[2022-12-14 08:34:39,462 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 08:34:39,537 INFO  L225             Difference]: With dead ends: 121565
[2022-12-14 08:34:39,537 INFO  L226             Difference]: Without dead ends: 81043
[2022-12-14 08:34:39,562 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 08:34:39,563 INFO  L413           NwaCegarLoop]: 6211 mSDtfsCounter, 12768 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 29243 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12768 SdHoareTripleChecker+Valid, 6259 SdHoareTripleChecker+Invalid, 40920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 29243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time
[2022-12-14 08:34:39,563 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12768 Valid, 6259 Invalid, 40920 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 29243 Invalid, 0 Unknown, 0 Unchecked, 28.5s Time]
[2022-12-14 08:34:39,623 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81043 states.
[2022-12-14 08:34:40,223 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81043 to 81043.
[2022-12-14 08:34:40,275 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81043 states, 81042 states have (on average 1.4399693985834505) internal successors, (116698), 81042 states have internal predecessors, (116698), 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 08:34:40,357 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81043 states to 81043 states and 116698 transitions.
[2022-12-14 08:34:40,357 INFO  L78                 Accepts]: Start accepts. Automaton has 81043 states and 116698 transitions. Word has length 10090
[2022-12-14 08:34:40,358 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 08:34:40,358 INFO  L495      AbstractCegarLoop]: Abstraction has 81043 states and 116698 transitions.
[2022-12-14 08:34:40,359 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3363.3333333333335) internal successors, (10090), 2 states have internal predecessors, (10090), 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 08:34:40,359 INFO  L276                IsEmpty]: Start isEmpty. Operand 81043 states and 116698 transitions.
[2022-12-14 08:34:40,992 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10097
[2022-12-14 08:34:40,992 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 08:34:40,995 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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 08:34:40,995 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-12-14 08:34:40,995 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 08:34:40,995 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 08:34:40,997 INFO  L85        PathProgramCache]: Analyzing trace with hash -1431107688, now seen corresponding path program 1 times
[2022-12-14 08:34:40,998 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 08:34:40,998 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697560928]
[2022-12-14 08:34:40,999 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 08:34:40,999 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 08:34:41,998 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 08:35:03,980 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 08:35:03,980 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 08:35:03,981 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697560928]
[2022-12-14 08:35:03,981 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697560928] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 08:35:03,981 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 08:35:03,982 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 08:35:03,982 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11068015]
[2022-12-14 08:35:03,982 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 08:35:03,987 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 08:35:03,987 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 08:35:03,992 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 08:35:03,992 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 08:35:03,994 INFO  L87              Difference]: Start difference. First operand 81043 states and 116698 transitions. Second operand  has 3 states, 3 states have (on average 3365.3333333333335) internal successors, (10096), 2 states have internal predecessors, (10096), 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 08:35:34,878 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 08:35:34,879 INFO  L93              Difference]: Finished difference Result 243125 states and 350091 transitions.
[2022-12-14 08:35:34,879 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 08:35:34,880 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3365.3333333333335) internal successors, (10096), 2 states have internal predecessors, (10096), 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 10096
[2022-12-14 08:35:34,880 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 08:35:35,049 INFO  L225             Difference]: With dead ends: 243125
[2022-12-14 08:35:35,049 INFO  L226             Difference]: Without dead ends: 162083
[2022-12-14 08:35:35,079 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 08:35:35,080 INFO  L413           NwaCegarLoop]: 6165 mSDtfsCounter, 13340 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 27416 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13340 SdHoareTripleChecker+Valid, 6213 SdHoareTripleChecker+Invalid, 40446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time
[2022-12-14 08:35:35,081 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13340 Valid, 6213 Invalid, 40446 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27416 Invalid, 0 Unknown, 0 Unchecked, 29.9s Time]
[2022-12-14 08:35:35,172 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 162083 states.
[2022-12-14 08:35:36,171 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 162083 to 162083.
[2022-12-14 08:35:36,272 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 162083 states, 162082 states have (on average 1.3156303599412642) internal successors, (213240), 162082 states have internal predecessors, (213240), 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 08:35:36,601 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 162083 states to 162083 states and 213240 transitions.
[2022-12-14 08:35:36,601 INFO  L78                 Accepts]: Start accepts. Automaton has 162083 states and 213240 transitions. Word has length 10096
[2022-12-14 08:35:36,602 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 08:35:36,602 INFO  L495      AbstractCegarLoop]: Abstraction has 162083 states and 213240 transitions.
[2022-12-14 08:35:36,603 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3365.3333333333335) internal successors, (10096), 2 states have internal predecessors, (10096), 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 08:35:36,603 INFO  L276                IsEmpty]: Start isEmpty. Operand 162083 states and 213240 transitions.
[2022-12-14 08:35:37,375 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10107
[2022-12-14 08:35:37,376 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 08:35:37,379 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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 08:35:37,379 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-12-14 08:35:37,379 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 08:35:37,379 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 08:35:37,381 INFO  L85        PathProgramCache]: Analyzing trace with hash -10818497, now seen corresponding path program 1 times
[2022-12-14 08:35:37,382 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 08:35:37,382 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908607269]
[2022-12-14 08:35:37,383 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 08:35:37,383 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 08:35:38,392 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 08:36:05,469 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 08:36:05,469 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 08:36:05,469 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908607269]
[2022-12-14 08:36:05,469 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908607269] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 08:36:05,469 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 08:36:05,472 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 08:36:05,472 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396896415]
[2022-12-14 08:36:05,473 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 08:36:05,484 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 08:36:05,484 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 08:36:05,494 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 08:36:05,494 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 08:36:05,496 INFO  L87              Difference]: Start difference. First operand 162083 states and 213240 transitions. Second operand  has 3 states, 3 states have (on average 3368.6666666666665) internal successors, (10106), 2 states have internal predecessors, (10106), 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 08:36:33,227 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 08:36:33,228 INFO  L93              Difference]: Finished difference Result 405205 states and 525175 transitions.
[2022-12-14 08:36:33,228 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 08:36:33,230 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3368.6666666666665) internal successors, (10106), 2 states have internal predecessors, (10106), 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 10106
[2022-12-14 08:36:33,230 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 08:36:33,495 INFO  L225             Difference]: With dead ends: 405205
[2022-12-14 08:36:33,495 INFO  L226             Difference]: Without dead ends: 243123
[2022-12-14 08:36:33,548 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 08:36:33,548 INFO  L413           NwaCegarLoop]: 8004 mSDtfsCounter, 11068 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 28363 mSolverCounterSat, 7491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11068 SdHoareTripleChecker+Valid, 8052 SdHoareTripleChecker+Invalid, 35854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7491 IncrementalHoareTripleChecker+Valid, 28363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.4s IncrementalHoareTripleChecker+Time
[2022-12-14 08:36:33,548 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11068 Valid, 8052 Invalid, 35854 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7491 Valid, 28363 Invalid, 0 Unknown, 0 Unchecked, 26.4s Time]
[2022-12-14 08:36:33,679 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 243123 states.
[2022-12-14 08:36:35,432 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 243123 to 243123.
[2022-12-14 08:36:35,500 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 243123 states, 243122 states have (on average 1.2453336185125163) internal successors, (302768), 243122 states have internal predecessors, (302768), 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 08:36:35,726 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 243123 states to 243123 states and 302768 transitions.
[2022-12-14 08:36:35,727 INFO  L78                 Accepts]: Start accepts. Automaton has 243123 states and 302768 transitions. Word has length 10106
[2022-12-14 08:36:35,727 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 08:36:35,727 INFO  L495      AbstractCegarLoop]: Abstraction has 243123 states and 302768 transitions.
[2022-12-14 08:36:35,729 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3368.6666666666665) internal successors, (10106), 2 states have internal predecessors, (10106), 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 08:36:35,729 INFO  L276                IsEmpty]: Start isEmpty. Operand 243123 states and 302768 transitions.
[2022-12-14 08:36:36,630 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10136
[2022-12-14 08:36:36,630 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 08:36:36,633 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:36:36,633 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-12-14 08:36:36,633 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 08:36:36,633 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 08:36:36,635 INFO  L85        PathProgramCache]: Analyzing trace with hash 224970062, now seen corresponding path program 1 times
[2022-12-14 08:36:36,635 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 08:36:36,635 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828969362]
[2022-12-14 08:36:36,636 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 08:36:36,636 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 08:36:37,642 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 08:36:57,282 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 08:36:57,283 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 08:36:57,283 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828969362]
[2022-12-14 08:36:57,283 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828969362] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 08:36:57,283 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 08:36:57,283 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 08:36:57,284 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473981580]
[2022-12-14 08:36:57,284 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 08:36:57,288 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 08:36:57,288 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 08:36:57,293 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 08:36:57,293 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 08:36:57,295 INFO  L87              Difference]: Start difference. First operand 243123 states and 302768 transitions. Second operand  has 3 states, 3 states have (on average 3378.3333333333335) internal successors, (10135), 2 states have internal predecessors, (10135), 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 08:37:28,312 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 08:37:28,312 INFO  L93              Difference]: Finished difference Result 729365 states and 908301 transitions.
[2022-12-14 08:37:28,313 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 08:37:28,314 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3378.3333333333335) internal successors, (10135), 2 states have internal predecessors, (10135), 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 10135
[2022-12-14 08:37:28,314 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 08:37:28,856 INFO  L225             Difference]: With dead ends: 729365
[2022-12-14 08:37:28,856 INFO  L226             Difference]: Without dead ends: 486243
[2022-12-14 08:37:28,942 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 08:37:28,943 INFO  L413           NwaCegarLoop]: 7234 mSDtfsCounter, 11771 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 30385 mSolverCounterSat, 11086 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11771 SdHoareTripleChecker+Valid, 7282 SdHoareTripleChecker+Invalid, 41471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11086 IncrementalHoareTripleChecker+Valid, 30385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.9s IncrementalHoareTripleChecker+Time
[2022-12-14 08:37:28,943 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11771 Valid, 7282 Invalid, 41471 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11086 Valid, 30385 Invalid, 0 Unknown, 0 Unchecked, 28.9s Time]
[2022-12-14 08:37:29,177 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 486243 states.
[2022-12-14 08:37:32,712 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 486243 to 486243.
[2022-12-14 08:37:32,911 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 486243 states, 486242 states have (on average 1.188054507837661) internal successors, (577682), 486242 states have internal predecessors, (577682), 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 08:37:33,582 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 486243 states to 486243 states and 577682 transitions.
[2022-12-14 08:37:33,582 INFO  L78                 Accepts]: Start accepts. Automaton has 486243 states and 577682 transitions. Word has length 10135
[2022-12-14 08:37:33,582 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 08:37:33,582 INFO  L495      AbstractCegarLoop]: Abstraction has 486243 states and 577682 transitions.
[2022-12-14 08:37:33,584 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3378.3333333333335) internal successors, (10135), 2 states have internal predecessors, (10135), 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 08:37:33,584 INFO  L276                IsEmpty]: Start isEmpty. Operand 486243 states and 577682 transitions.
[2022-12-14 08:37:34,710 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10226
[2022-12-14 08:37:34,711 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 08:37:34,715 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:37:34,715 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-12-14 08:37:34,715 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 08:37:34,716 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 08:37:34,719 INFO  L85        PathProgramCache]: Analyzing trace with hash -1025217843, now seen corresponding path program 1 times
[2022-12-14 08:37:34,719 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 08:37:34,719 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963492869]
[2022-12-14 08:37:34,721 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 08:37:34,721 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 08:37:36,057 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 08:37:55,214 INFO  L134       CoverageAnalysis]: Checked inductivity of 139 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 08:37:55,214 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 08:37:55,214 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963492869]
[2022-12-14 08:37:55,214 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963492869] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 08:37:55,214 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 08:37:55,215 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 08:37:55,215 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921712415]
[2022-12-14 08:37:55,215 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 08:37:55,219 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 08:37:55,219 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 08:37:55,223 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 08:37:55,223 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 08:37:55,225 INFO  L87              Difference]: Start difference. First operand 486243 states and 577682 transitions. Second operand  has 3 states, 3 states have (on average 3408.3333333333335) internal successors, (10225), 2 states have internal predecessors, (10225), 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 08:38:27,704 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 08:38:27,704 INFO  L93              Difference]: Finished difference Result 1458725 states and 1733043 transitions.
[2022-12-14 08:38:27,704 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 08:38:27,706 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3408.3333333333335) internal successors, (10225), 2 states have internal predecessors, (10225), 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 10225
[2022-12-14 08:38:27,706 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 08:38:28,677 INFO  L225             Difference]: With dead ends: 1458725
[2022-12-14 08:38:28,677 INFO  L226             Difference]: Without dead ends: 972483
[2022-12-14 08:38:28,847 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 08:38:28,847 INFO  L413           NwaCegarLoop]: 6463 mSDtfsCounter, 12269 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 30554 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12269 SdHoareTripleChecker+Valid, 6511 SdHoareTripleChecker+Invalid, 41055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 30554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time
[2022-12-14 08:38:28,847 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12269 Valid, 6511 Invalid, 41055 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 30554 Invalid, 0 Unknown, 0 Unchecked, 28.5s Time]
[2022-12-14 08:38:29,564 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 972483 states.
[2022-12-14 08:38:36,585 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 972483 to 972483.
[2022-12-14 08:38:37,190 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 972483 states, 972482 states have (on average 1.1432067637241614) internal successors, (1111748), 972482 states have internal predecessors, (1111748), 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 08:38:38,593 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 972483 states to 972483 states and 1111748 transitions.
[2022-12-14 08:38:38,593 INFO  L78                 Accepts]: Start accepts. Automaton has 972483 states and 1111748 transitions. Word has length 10225
[2022-12-14 08:38:38,594 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 08:38:38,594 INFO  L495      AbstractCegarLoop]: Abstraction has 972483 states and 1111748 transitions.
[2022-12-14 08:38:38,595 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3408.3333333333335) internal successors, (10225), 2 states have internal predecessors, (10225), 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 08:38:38,596 INFO  L276                IsEmpty]: Start isEmpty. Operand 972483 states and 1111748 transitions.
[2022-12-14 08:38:40,296 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10422
[2022-12-14 08:38:40,296 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 08:38:40,298 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 08:38:40,298 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-12-14 08:38:40,299 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 08:38:40,299 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 08:38:40,300 INFO  L85        PathProgramCache]: Analyzing trace with hash 1547734100, now seen corresponding path program 1 times
[2022-12-14 08:38:40,300 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 08:38:40,300 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568801807]
[2022-12-14 08:38:40,301 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 08:38:40,301 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 08:38:41,454 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 08:39:05,051 INFO  L134       CoverageAnalysis]: Checked inductivity of 383 backedges. 333 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2022-12-14 08:39:05,051 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 08:39:05,051 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568801807]
[2022-12-14 08:39:05,051 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568801807] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 08:39:05,051 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 08:39:05,052 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 08:39:05,052 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526865057]
[2022-12-14 08:39:05,052 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 08:39:05,058 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 08:39:05,058 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 08:39:05,062 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 08:39:05,063 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 08:39:05,065 INFO  L87              Difference]: Start difference. First operand 972483 states and 1111748 transitions. Second operand  has 3 states, 3 states have (on average 3457.3333333333335) internal successors, (10372), 2 states have internal predecessors, (10372), 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 08:39:43,496 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 08:39:43,496 INFO  L93              Difference]: Finished difference Result 2917445 states and 3335241 transitions.
[2022-12-14 08:39:43,497 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 08:39:43,498 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3457.3333333333335) internal successors, (10372), 2 states have internal predecessors, (10372), 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 10421
[2022-12-14 08:39:43,498 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 08:39:45,844 INFO  L225             Difference]: With dead ends: 2917445
[2022-12-14 08:39:45,844 INFO  L226             Difference]: Without dead ends: 1944963
[2022-12-14 08:39:46,191 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 08:39:46,191 INFO  L413           NwaCegarLoop]: 6681 mSDtfsCounter, 10470 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 30489 mSolverCounterSat, 12522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10470 SdHoareTripleChecker+Valid, 6729 SdHoareTripleChecker+Invalid, 43011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12522 IncrementalHoareTripleChecker+Valid, 30489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.4s IncrementalHoareTripleChecker+Time
[2022-12-14 08:39:46,191 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10470 Valid, 6729 Invalid, 43011 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12522 Valid, 30489 Invalid, 0 Unknown, 0 Unchecked, 31.4s Time]
[2022-12-14 08:39:47,533 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1944963 states.
[2022-12-14 08:40:02,450 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944963 to 1944963.
[2022-12-14 08:40:03,064 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1944963 states, 1944962 states have (on average 1.1176362314533652) internal successors, (2173760), 1944962 states have internal predecessors, (2173760), 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 08:40:06,204 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1944963 states to 1944963 states and 2173760 transitions.
[2022-12-14 08:40:06,205 INFO  L78                 Accepts]: Start accepts. Automaton has 1944963 states and 2173760 transitions. Word has length 10421
[2022-12-14 08:40:06,205 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 08:40:06,205 INFO  L495      AbstractCegarLoop]: Abstraction has 1944963 states and 2173760 transitions.
[2022-12-14 08:40:06,206 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3457.3333333333335) internal successors, (10372), 2 states have internal predecessors, (10372), 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 08:40:06,207 INFO  L276                IsEmpty]: Start isEmpty. Operand 1944963 states and 2173760 transitions.
[2022-12-14 08:40:09,170 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10532
[2022-12-14 08:40:09,170 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 08:40:09,172 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2022-12-14 08:40:09,173 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-12-14 08:40:09,173 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 08:40:09,173 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 08:40:09,174 INFO  L85        PathProgramCache]: Analyzing trace with hash -1788515307, now seen corresponding path program 1 times
[2022-12-14 08:40:09,174 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 08:40:09,174 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296121917]
[2022-12-14 08:40:09,175 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 08:40:09,175 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 08:40:10,270 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 08:40:37,696 INFO  L134       CoverageAnalysis]: Checked inductivity of 464 backedges. 443 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2022-12-14 08:40:37,696 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 08:40:37,696 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296121917]
[2022-12-14 08:40:37,696 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296121917] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 08:40:37,696 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 08:40:37,698 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 08:40:37,698 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054761053]
[2022-12-14 08:40:37,698 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 08:40:37,704 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 08:40:37,705 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 08:40:37,711 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 08:40:37,712 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 08:40:37,715 INFO  L87              Difference]: Start difference. First operand 1944963 states and 2173760 transitions. Second operand  has 3 states, 3 states have (on average 3503.6666666666665) internal successors, (10511), 2 states have internal predecessors, (10511), 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)