./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label12.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_d77b899c-69d6-47e5-9d9c-6d12ef9c24c0/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77b899c-69d6-47e5-9d9c-6d12ef9c24c0/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_d77b899c-69d6-47e5-9d9c-6d12ef9c24c0/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77b899c-69d6-47e5-9d9c-6d12ef9c24c0/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77b899c-69d6-47e5-9d9c-6d12ef9c24c0/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_d77b899c-69d6-47e5-9d9c-6d12ef9c24c0/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 8a742001fc048cf2c19a5ef7c9a088e49806c4d0813d840a2d758559c7b8b5ba
--- 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 07:49:43,296 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-12-14 07:49:43,298 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-12-14 07:49:43,317 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-12-14 07:49:43,318 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-12-14 07:49:43,319 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-12-14 07:49:43,320 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-12-14 07:49:43,321 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-12-14 07:49:43,323 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-12-14 07:49:43,324 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-12-14 07:49:43,324 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-12-14 07:49:43,325 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-12-14 07:49:43,326 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-12-14 07:49:43,327 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-12-14 07:49:43,328 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-12-14 07:49:43,329 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-12-14 07:49:43,329 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-12-14 07:49:43,330 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-12-14 07:49:43,332 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-12-14 07:49:43,334 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-12-14 07:49:43,335 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-12-14 07:49:43,336 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-12-14 07:49:43,337 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-12-14 07:49:43,338 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-12-14 07:49:43,341 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-12-14 07:49:43,342 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-12-14 07:49:43,342 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-12-14 07:49:43,343 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-12-14 07:49:43,343 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-12-14 07:49:43,344 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-12-14 07:49:43,345 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-12-14 07:49:43,346 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-12-14 07:49:43,347 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-12-14 07:49:43,347 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-12-14 07:49:43,348 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-12-14 07:49:43,348 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-12-14 07:49:43,349 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-12-14 07:49:43,349 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-12-14 07:49:43,349 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-12-14 07:49:43,350 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-12-14 07:49:43,350 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-12-14 07:49:43,351 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77b899c-69d6-47e5-9d9c-6d12ef9c24c0/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf
[2022-12-14 07:49:43,371 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-12-14 07:49:43,372 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-12-14 07:49:43,372 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-12-14 07:49:43,372 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-12-14 07:49:43,373 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-12-14 07:49:43,373 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-12-14 07:49:43,373 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2022-12-14 07:49:43,373 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2022-12-14 07:49:43,373 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2022-12-14 07:49:43,373 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2022-12-14 07:49:43,374 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2022-12-14 07:49:43,374 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2022-12-14 07:49:43,374 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2022-12-14 07:49:43,374 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2022-12-14 07:49:43,374 INFO  L138        SettingsManager]:  * Interval Domain=false
[2022-12-14 07:49:43,374 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2022-12-14 07:49:43,374 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2022-12-14 07:49:43,374 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2022-12-14 07:49:43,375 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-12-14 07:49:43,375 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-12-14 07:49:43,375 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-12-14 07:49:43,375 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-12-14 07:49:43,375 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-12-14 07:49:43,375 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-12-14 07:49:43,376 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-12-14 07:49:43,376 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-12-14 07:49:43,376 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-12-14 07:49:43,376 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-12-14 07:49:43,376 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-12-14 07:49:43,376 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-12-14 07:49:43,377 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-12-14 07:49:43,377 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-12-14 07:49:43,377 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 07:49:43,377 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-12-14 07:49:43,377 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2022-12-14 07:49:43,377 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-12-14 07:49:43,378 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-12-14 07:49:43,378 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2022-12-14 07:49:43,378 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-12-14 07:49:43,378 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-12-14 07:49:43,378 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-12-14 07:49:43,378 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_d77b899c-69d6-47e5-9d9c-6d12ef9c24c0/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_d77b899c-69d6-47e5-9d9c-6d12ef9c24c0/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 -> 8a742001fc048cf2c19a5ef7c9a088e49806c4d0813d840a2d758559c7b8b5ba
[2022-12-14 07:49:43,547 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-12-14 07:49:43,562 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-12-14 07:49:43,564 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-12-14 07:49:43,565 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-12-14 07:49:43,566 INFO  L275        PluginConnector]: CDTParser initialized
[2022-12-14 07:49:43,567 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77b899c-69d6-47e5-9d9c-6d12ef9c24c0/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/eca-rers2012/Problem07_label12.c
[2022-12-14 07:49:46,186 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-12-14 07:49:47,248 INFO  L351              CDTParser]: Found 1 translation units.
[2022-12-14 07:49:47,248 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77b899c-69d6-47e5-9d9c-6d12ef9c24c0/sv-benchmarks/c/eca-rers2012/Problem07_label12.c
[2022-12-14 07:49:47,366 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77b899c-69d6-47e5-9d9c-6d12ef9c24c0/bin/utaipan-gh47qXpMRh/data/f2112ca38/c63961f44f81479fba6cd76dc9402c1b/FLAG88b31e7a8
[2022-12-14 07:49:47,378 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77b899c-69d6-47e5-9d9c-6d12ef9c24c0/bin/utaipan-gh47qXpMRh/data/f2112ca38/c63961f44f81479fba6cd76dc9402c1b
[2022-12-14 07:49:47,380 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-12-14 07:49:47,381 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-12-14 07:49:47,382 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-12-14 07:49:47,382 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-12-14 07:49:47,385 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-12-14 07:49:47,385 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:49:47" (1/1) ...
[2022-12-14 07:49:47,386 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bee121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:49:47, skipping insertion in model container
[2022-12-14 07:49:47,386 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:49:47" (1/1) ...
[2022-12-14 07:49:47,391 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-12-14 07:49:47,989 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-12-14 07:49:57,971 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_d77b899c-69d6-47e5-9d9c-6d12ef9c24c0/sv-benchmarks/c/eca-rers2012/Problem07_label12.c[2774099,2774112]
[2022-12-14 07:49:58,024 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 07:49:58,030 INFO  L203         MainTranslator]: Completed pre-run
[2022-12-14 07:50:03,979 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_d77b899c-69d6-47e5-9d9c-6d12ef9c24c0/sv-benchmarks/c/eca-rers2012/Problem07_label12.c[2774099,2774112]
[2022-12-14 07:50:03,984 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 07:50:04,657 INFO  L208         MainTranslator]: Completed translation
[2022-12-14 07:50:04,657 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:04 WrapperNode
[2022-12-14 07:50:04,657 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-12-14 07:50:04,658 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-12-14 07:50:04,658 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-12-14 07:50:04,658 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-12-14 07:50:04,663 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:04" (1/1) ...
[2022-12-14 07:50:04,945 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:04" (1/1) ...
[2022-12-14 07:50:06,289 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2022-12-14 07:50:06,290 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-12-14 07:50:06,291 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-12-14 07:50:06,291 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-12-14 07:50:06,291 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-12-14 07:50:06,301 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:04" (1/1) ...
[2022-12-14 07:50:06,301 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:04" (1/1) ...
[2022-12-14 07:50:06,508 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:04" (1/1) ...
[2022-12-14 07:50:06,508 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:04" (1/1) ...
[2022-12-14 07:50:07,067 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:04" (1/1) ...
[2022-12-14 07:50:07,208 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:04" (1/1) ...
[2022-12-14 07:50:07,375 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:04" (1/1) ...
[2022-12-14 07:50:07,438 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:04" (1/1) ...
[2022-12-14 07:50:07,717 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-12-14 07:50:07,718 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-12-14 07:50:07,718 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-12-14 07:50:07,718 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-12-14 07:50:07,719 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:04" (1/1) ...
[2022-12-14 07:50:07,724 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 07:50:07,733 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77b899c-69d6-47e5-9d9c-6d12ef9c24c0/bin/utaipan-gh47qXpMRh/z3
[2022-12-14 07:50:07,743 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77b899c-69d6-47e5-9d9c-6d12ef9c24c0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-12-14 07:50:07,744 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77b899c-69d6-47e5-9d9c-6d12ef9c24c0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-12-14 07:50:07,772 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-12-14 07:50:07,772 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-12-14 07:50:07,772 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-12-14 07:50:07,772 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-12-14 07:50:07,883 INFO  L235             CfgBuilder]: Building ICFG
[2022-12-14 07:50:07,885 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-12-14 07:50:37,817 INFO  L276             CfgBuilder]: Performing block encoding
[2022-12-14 07:50:38,506 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-12-14 07:50:38,507 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-12-14 07:50:38,515 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:50:38 BoogieIcfgContainer
[2022-12-14 07:50:38,515 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-12-14 07:50:38,517 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-12-14 07:50:38,517 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-12-14 07:50:38,519 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-12-14 07:50:38,519 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:49:47" (1/3) ...
[2022-12-14 07:50:38,520 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2caa81d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:50:38, skipping insertion in model container
[2022-12-14 07:50:38,520 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:50:04" (2/3) ...
[2022-12-14 07:50:38,520 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2caa81d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:50:38, skipping insertion in model container
[2022-12-14 07:50:38,520 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:50:38" (3/3) ...
[2022-12-14 07:50:38,521 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem07_label12.c
[2022-12-14 07:50:38,534 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-12-14 07:50:38,534 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-12-14 07:50:38,661 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-12-14 07:50:38,666 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;@ee7bd88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-12-14 07:50:38,667 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-12-14 07:50:38,698 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 07:50:39,426 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10086
[2022-12-14 07:50:39,427 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 07:50:39,430 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:39,431 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 07:50:39,444 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 07:50:39,448 INFO  L85        PathProgramCache]: Analyzing trace with hash 184881145, now seen corresponding path program 1 times
[2022-12-14 07:50:39,454 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 07:50:39,455 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822722587]
[2022-12-14 07:50:39,457 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 07:50:39,457 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 07:50:41,425 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 07:51:33,823 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 07:51:33,823 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 07:51:33,823 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822722587]
[2022-12-14 07:51:33,824 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822722587] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 07:51:33,824 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 07:51:33,825 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-14 07:51:33,826 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832647479]
[2022-12-14 07:51:33,826 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 07:51:33,840 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-14 07:51:33,841 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 07:51:33,870 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-14 07:51:33,871 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-12-14 07:51:33,887 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 4 states, 4 states have (on average 2521.25) internal successors, (10085), 3 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 07:52:22,096 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 07:52:22,096 INFO  L93              Difference]: Finished difference Result 40533 states and 80861 transitions.
[2022-12-14 07:52:22,097 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-12-14 07:52:22,101 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2521.25) internal successors, (10085), 3 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 07:52:22,118 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 07:52:22,226 INFO  L225             Difference]: With dead ends: 40533
[2022-12-14 07:52:22,226 INFO  L226             Difference]: Without dead ends: 30393
[2022-12-14 07:52:22,242 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-12-14 07:52:22,245 INFO  L413           NwaCegarLoop]: 5085 mSDtfsCounter, 22155 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 51680 mSolverCounterSat, 18959 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22155 SdHoareTripleChecker+Valid, 5196 SdHoareTripleChecker+Invalid, 70639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 18959 IncrementalHoareTripleChecker+Valid, 51680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.2s IncrementalHoareTripleChecker+Time
[2022-12-14 07:52:22,246 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22155 Valid, 5196 Invalid, 70639 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [18959 Valid, 51680 Invalid, 0 Unknown, 0 Unchecked, 47.2s Time]
[2022-12-14 07:52:22,295 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30393 states.
[2022-12-14 07:52:22,691 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30393 to 30393.
[2022-12-14 07:52:22,725 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30393 states, 30392 states have (on average 1.4995064490655436) internal successors, (45573), 30392 states have internal predecessors, (45573), 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 07:52:22,768 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30393 states to 30393 states and 45573 transitions.
[2022-12-14 07:52:22,769 INFO  L78                 Accepts]: Start accepts. Automaton has 30393 states and 45573 transitions. Word has length 10085
[2022-12-14 07:52:22,778 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 07:52:22,779 INFO  L495      AbstractCegarLoop]: Abstraction has 30393 states and 45573 transitions.
[2022-12-14 07:52:22,780 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2521.25) internal successors, (10085), 3 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 07:52:22,781 INFO  L276                IsEmpty]: Start isEmpty. Operand 30393 states and 45573 transitions.
[2022-12-14 07:52:23,704 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12985
[2022-12-14 07:52:23,705 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 07:52:23,709 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 07:52:23,709 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-12-14 07:52:23,709 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 07:52:23,710 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 07:52:23,712 INFO  L85        PathProgramCache]: Analyzing trace with hash 147763352, now seen corresponding path program 1 times
[2022-12-14 07:52:23,712 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 07:52:23,712 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908285827]
[2022-12-14 07:52:23,713 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 07:52:23,713 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 07:52:25,223 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 07:53:01,151 INFO  L134       CoverageAnalysis]: Checked inductivity of 2888 backedges. 2885 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2022-12-14 07:53:01,151 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 07:53:01,152 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908285827]
[2022-12-14 07:53:01,152 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908285827] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 07:53:01,152 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 07:53:01,154 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 07:53:01,154 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513081400]
[2022-12-14 07:53:01,154 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 07:53:01,167 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 07:53:01,168 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 07:53:01,177 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 07:53:01,177 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 07:53:01,183 INFO  L87              Difference]: Start difference. First operand 30393 states and 45573 transitions. Second operand  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 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 07:53:31,167 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 07:53:31,168 INFO  L93              Difference]: Finished difference Result 70915 states and 116444 transitions.
[2022-12-14 07:53:31,168 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 07:53:31,170 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 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 12984
[2022-12-14 07:53:31,172 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 07:53:31,237 INFO  L225             Difference]: With dead ends: 70915
[2022-12-14 07:53:31,237 INFO  L226             Difference]: Without dead ends: 50653
[2022-12-14 07:53:31,251 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 07:53:31,252 INFO  L413           NwaCegarLoop]: 4814 mSDtfsCounter, 10912 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 28583 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10912 SdHoareTripleChecker+Valid, 4862 SdHoareTripleChecker+Invalid, 40341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.4s IncrementalHoareTripleChecker+Time
[2022-12-14 07:53:31,253 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10912 Valid, 4862 Invalid, 40341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28583 Invalid, 0 Unknown, 0 Unchecked, 29.4s Time]
[2022-12-14 07:53:31,284 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50653 states.
[2022-12-14 07:53:31,700 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50653 to 50653.
[2022-12-14 07:53:31,736 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 50653 states, 50652 states have (on average 1.4573955618731738) internal successors, (73820), 50652 states have internal predecessors, (73820), 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 07:53:31,787 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50653 states to 50653 states and 73820 transitions.
[2022-12-14 07:53:31,787 INFO  L78                 Accepts]: Start accepts. Automaton has 50653 states and 73820 transitions. Word has length 12984
[2022-12-14 07:53:31,789 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 07:53:31,789 INFO  L495      AbstractCegarLoop]: Abstraction has 50653 states and 73820 transitions.
[2022-12-14 07:53:31,791 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 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 07:53:31,791 INFO  L276                IsEmpty]: Start isEmpty. Operand 50653 states and 73820 transitions.
[2022-12-14 07:53:32,715 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12986
[2022-12-14 07:53:32,715 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 07:53:32,719 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2022-12-14 07:53:32,719 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-12-14 07:53:32,719 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 07:53:32,719 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 07:53:32,721 INFO  L85        PathProgramCache]: Analyzing trace with hash 1675842384, now seen corresponding path program 1 times
[2022-12-14 07:53:32,721 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 07:53:32,721 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899975735]
[2022-12-14 07:53:32,722 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 07:53:32,722 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 07:53:34,178 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 07:54:32,672 INFO  L134       CoverageAnalysis]: Checked inductivity of 2890 backedges. 2890 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 07:54:32,673 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 07:54:32,673 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899975735]
[2022-12-14 07:54:32,673 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899975735] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 07:54:32,673 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 07:54:32,674 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-14 07:54:32,674 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777077521]
[2022-12-14 07:54:32,674 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 07:54:32,685 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 07:54:32,685 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 07:54:32,690 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 07:54:32,690 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 07:54:32,693 INFO  L87              Difference]: Start difference. First operand 50653 states and 73820 transitions. Second operand  has 3 states, 3 states have (on average 4328.333333333333) internal successors, (12985), 3 states have internal predecessors, (12985), 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 07:54:57,359 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 07:54:57,359 INFO  L93              Difference]: Finished difference Result 111435 states and 165527 transitions.
[2022-12-14 07:54:57,359 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 07:54:57,361 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4328.333333333333) internal successors, (12985), 3 states have internal predecessors, (12985), 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 12985
[2022-12-14 07:54:57,363 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 07:54:57,428 INFO  L225             Difference]: With dead ends: 111435
[2022-12-14 07:54:57,428 INFO  L226             Difference]: Without dead ends: 70913
[2022-12-14 07:54:57,449 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 07:54:57,450 INFO  L413           NwaCegarLoop]: 18144 mSDtfsCounter, 10150 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 33483 mSolverCounterSat, 3753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10150 SdHoareTripleChecker+Valid, 18193 SdHoareTripleChecker+Invalid, 37236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3753 IncrementalHoareTripleChecker+Valid, 33483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time
[2022-12-14 07:54:57,450 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10150 Valid, 18193 Invalid, 37236 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3753 Valid, 33483 Invalid, 0 Unknown, 0 Unchecked, 24.0s Time]
[2022-12-14 07:54:57,493 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 70913 states.
[2022-12-14 07:54:57,961 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 70913 to 70913.
[2022-12-14 07:54:58,009 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 70913 states, 70912 states have (on average 1.412595893501805) internal successors, (100170), 70912 states have internal predecessors, (100170), 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 07:54:58,083 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 70913 states to 70913 states and 100170 transitions.
[2022-12-14 07:54:58,083 INFO  L78                 Accepts]: Start accepts. Automaton has 70913 states and 100170 transitions. Word has length 12985
[2022-12-14 07:54:58,085 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 07:54:58,085 INFO  L495      AbstractCegarLoop]: Abstraction has 70913 states and 100170 transitions.
[2022-12-14 07:54:58,087 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4328.333333333333) internal successors, (12985), 3 states have internal predecessors, (12985), 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 07:54:58,087 INFO  L276                IsEmpty]: Start isEmpty. Operand 70913 states and 100170 transitions.
[2022-12-14 07:54:59,096 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12992
[2022-12-14 07:54:59,096 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 07:54:59,099 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 07:54:59,099 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-12-14 07:54:59,099 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 07:54:59,100 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 07:54:59,102 INFO  L85        PathProgramCache]: Analyzing trace with hash -1420928575, now seen corresponding path program 1 times
[2022-12-14 07:54:59,102 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 07:54:59,102 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711254937]
[2022-12-14 07:54:59,103 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 07:54:59,103 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 07:55:00,564 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 07:55:38,477 INFO  L134       CoverageAnalysis]: Checked inductivity of 2902 backedges. 2892 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2022-12-14 07:55:38,477 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 07:55:38,477 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711254937]
[2022-12-14 07:55:38,477 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711254937] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 07:55:38,477 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 07:55:38,478 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 07:55:38,479 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579074727]
[2022-12-14 07:55:38,479 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 07:55:38,487 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 07:55:38,487 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 07:55:38,494 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 07:55:38,495 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 07:55:38,498 INFO  L87              Difference]: Start difference. First operand 70913 states and 100170 transitions. Second operand  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 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 07:56:08,819 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 07:56:08,819 INFO  L93              Difference]: Finished difference Result 192475 states and 280235 transitions.
[2022-12-14 07:56:08,819 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 07:56:08,821 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 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 12991
[2022-12-14 07:56:08,823 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 07:56:08,935 INFO  L225             Difference]: With dead ends: 192475
[2022-12-14 07:56:08,935 INFO  L226             Difference]: Without dead ends: 131693
[2022-12-14 07:56:08,959 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 07:56:08,960 INFO  L413           NwaCegarLoop]: 6715 mSDtfsCounter, 10069 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 27589 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10069 SdHoareTripleChecker+Valid, 6763 SdHoareTripleChecker+Invalid, 40619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.5s IncrementalHoareTripleChecker+Time
[2022-12-14 07:56:08,960 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10069 Valid, 6763 Invalid, 40619 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27589 Invalid, 0 Unknown, 0 Unchecked, 29.5s Time]
[2022-12-14 07:56:09,032 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 131693 states.
[2022-12-14 07:56:09,979 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 131693 to 131693.
[2022-12-14 07:56:10,063 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 131693 states, 131692 states have (on average 1.3217355648027216) internal successors, (174062), 131692 states have internal predecessors, (174062), 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 07:56:10,202 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 131693 states to 131693 states and 174062 transitions.
[2022-12-14 07:56:10,203 INFO  L78                 Accepts]: Start accepts. Automaton has 131693 states and 174062 transitions. Word has length 12991
[2022-12-14 07:56:10,205 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 07:56:10,205 INFO  L495      AbstractCegarLoop]: Abstraction has 131693 states and 174062 transitions.
[2022-12-14 07:56:10,207 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4327.333333333333) internal successors, (12982), 2 states have internal predecessors, (12982), 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 07:56:10,207 INFO  L276                IsEmpty]: Start isEmpty. Operand 131693 states and 174062 transitions.
[2022-12-14 07:56:11,395 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13002
[2022-12-14 07:56:11,395 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 07:56:11,398 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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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:11,399 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-12-14 07:56:11,399 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 07:56:11,399 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 07:56:11,401 INFO  L85        PathProgramCache]: Analyzing trace with hash -1855021272, now seen corresponding path program 1 times
[2022-12-14 07:56:11,401 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 07:56:11,401 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39772844]
[2022-12-14 07:56:11,402 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 07:56:11,402 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 07:56:12,843 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 07:57:07,629 INFO  L134       CoverageAnalysis]: Checked inductivity of 2922 backedges. 2922 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 07:57:07,629 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 07:57:07,629 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39772844]
[2022-12-14 07:57:07,629 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39772844] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 07:57:07,629 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 07:57:07,630 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-14 07:57:07,630 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441278614]
[2022-12-14 07:57:07,630 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 07:57:07,635 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-14 07:57:07,636 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 07:57:07,641 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-14 07:57:07,641 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-14 07:57:07,644 INFO  L87              Difference]: Start difference. First operand 131693 states and 174062 transitions. Second operand  has 4 states, 4 states have (on average 3250.25) internal successors, (13001), 3 states have internal predecessors, (13001), 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 07:57:52,914 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 07:57:52,914 INFO  L93              Difference]: Finished difference Result 455855 states and 613939 transitions.
[2022-12-14 07:57:52,915 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-12-14 07:57:52,916 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3250.25) internal successors, (13001), 3 states have internal predecessors, (13001), 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 13001
[2022-12-14 07:57:52,918 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 07:57:53,339 INFO  L225             Difference]: With dead ends: 455855
[2022-12-14 07:57:53,339 INFO  L226             Difference]: Without dead ends: 334293
[2022-12-14 07:57:53,411 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-14 07:57:53,413 INFO  L413           NwaCegarLoop]: 5413 mSDtfsCounter, 28959 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 40825 mSolverCounterSat, 25779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28959 SdHoareTripleChecker+Valid, 5510 SdHoareTripleChecker+Invalid, 66604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25779 IncrementalHoareTripleChecker+Valid, 40825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.4s IncrementalHoareTripleChecker+Time
[2022-12-14 07:57:53,413 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [28959 Valid, 5510 Invalid, 66604 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25779 Valid, 40825 Invalid, 0 Unknown, 0 Unchecked, 43.4s Time]
[2022-12-14 07:57:53,653 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 334293 states.
[2022-12-14 07:57:56,025 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 334293 to 334293.
[2022-12-14 07:57:56,441 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 334293 states, 334292 states have (on average 1.227465808335228) internal successors, (410332), 334292 states have internal predecessors, (410332), 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 07:57:56,787 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 334293 states to 334293 states and 410332 transitions.
[2022-12-14 07:57:56,788 INFO  L78                 Accepts]: Start accepts. Automaton has 334293 states and 410332 transitions. Word has length 13001
[2022-12-14 07:57:56,962 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 07:57:56,962 INFO  L495      AbstractCegarLoop]: Abstraction has 334293 states and 410332 transitions.
[2022-12-14 07:57:56,964 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3250.25) internal successors, (13001), 3 states have internal predecessors, (13001), 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 07:57:56,964 INFO  L276                IsEmpty]: Start isEmpty. Operand 334293 states and 410332 transitions.
[2022-12-14 07:57:58,177 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13096
[2022-12-14 07:57:58,177 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 07:57:58,180 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 07:57:58,181 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-12-14 07:57:58,181 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 07:57:58,181 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 07:57:58,183 INFO  L85        PathProgramCache]: Analyzing trace with hash 677943393, now seen corresponding path program 1 times
[2022-12-14 07:57:58,183 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 07:57:58,183 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077690185]
[2022-12-14 07:57:58,184 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 07:57:58,184 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 07:57:59,708 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 07:58:52,904 INFO  L134       CoverageAnalysis]: Checked inductivity of 3127 backedges. 3108 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2022-12-14 07:58:52,905 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 07:58:52,905 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077690185]
[2022-12-14 07:58:52,905 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077690185] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 07:58:52,905 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 07:58:52,908 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-14 07:58:52,909 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309864184]
[2022-12-14 07:58:52,909 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 07:58:52,916 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-14 07:58:52,917 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 07:58:52,922 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-14 07:58:52,923 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-14 07:58:52,925 INFO  L87              Difference]: Start difference. First operand 334293 states and 410332 transitions. Second operand  has 4 states, 4 states have (on average 3270.5) internal successors, (13082), 3 states have internal predecessors, (13082), 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 07:59:44,194 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 07:59:44,194 INFO  L93              Difference]: Finished difference Result 1063655 states and 1322749 transitions.
[2022-12-14 07:59:44,195 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-12-14 07:59:44,196 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3270.5) internal successors, (13082), 3 states have internal predecessors, (13082), 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 13095
[2022-12-14 07:59:44,198 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 07:59:45,085 INFO  L225             Difference]: With dead ends: 1063655
[2022-12-14 07:59:45,085 INFO  L226             Difference]: Without dead ends: 739493
[2022-12-14 07:59:45,386 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-14 07:59:45,387 INFO  L413           NwaCegarLoop]: 7950 mSDtfsCounter, 17669 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 57919 mSolverCounterSat, 17801 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17669 SdHoareTripleChecker+Valid, 8071 SdHoareTripleChecker+Invalid, 75720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 17801 IncrementalHoareTripleChecker+Valid, 57919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.0s IncrementalHoareTripleChecker+Time
[2022-12-14 07:59:45,387 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17669 Valid, 8071 Invalid, 75720 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [17801 Valid, 57919 Invalid, 0 Unknown, 0 Unchecked, 48.0s Time]
[2022-12-14 07:59:45,795 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 739493 states.
[2022-12-14 07:59:50,967 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 739493 to 739493.
[2022-12-14 07:59:51,351 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 739493 states, 739492 states have (on average 1.171869337328869) internal successors, (866588), 739492 states have internal predecessors, (866588), 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 07:59:52,690 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 739493 states to 739493 states and 866588 transitions.
[2022-12-14 07:59:52,691 INFO  L78                 Accepts]: Start accepts. Automaton has 739493 states and 866588 transitions. Word has length 13095
[2022-12-14 07:59:52,692 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 07:59:52,692 INFO  L495      AbstractCegarLoop]: Abstraction has 739493 states and 866588 transitions.
[2022-12-14 07:59:52,694 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3270.5) internal successors, (13082), 3 states have internal predecessors, (13082), 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 07:59:52,694 INFO  L276                IsEmpty]: Start isEmpty. Operand 739493 states and 866588 transitions.
[2022-12-14 07:59:54,350 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13259
[2022-12-14 07:59:54,350 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 07:59:54,352 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 07:59:54,352 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-12-14 07:59:54,352 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 07:59:54,353 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 07:59:54,354 INFO  L85        PathProgramCache]: Analyzing trace with hash 1767104900, now seen corresponding path program 1 times
[2022-12-14 07:59:54,354 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 07:59:54,354 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163620280]
[2022-12-14 07:59:54,355 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 07:59:54,355 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 07:59:55,925 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat