./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label42.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 2329fc70
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f140266c-e2ed-4c5c-8bbc-cd3de90f4617/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f140266c-e2ed-4c5c-8bbc-cd3de90f4617/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_f140266c-e2ed-4c5c-8bbc-cd3de90f4617/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f140266c-e2ed-4c5c-8bbc-cd3de90f4617/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label42.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f140266c-e2ed-4c5c-8bbc-cd3de90f4617/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_f140266c-e2ed-4c5c-8bbc-cd3de90f4617/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 8bbc9a798bf0c903a7e47ceeff27ebe8197fe0e6eaf0d86b6b6297bc583d1018
--- 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 11:02:03,113 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-12-14 11:02:03,114 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-12-14 11:02:03,134 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-12-14 11:02:03,134 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-12-14 11:02:03,135 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-12-14 11:02:03,136 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-12-14 11:02:03,138 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-12-14 11:02:03,140 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-12-14 11:02:03,141 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-12-14 11:02:03,142 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-12-14 11:02:03,143 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-12-14 11:02:03,143 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-12-14 11:02:03,144 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-12-14 11:02:03,145 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-12-14 11:02:03,146 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-12-14 11:02:03,147 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-12-14 11:02:03,148 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-12-14 11:02:03,150 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-12-14 11:02:03,152 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-12-14 11:02:03,154 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-12-14 11:02:03,155 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-12-14 11:02:03,156 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-12-14 11:02:03,157 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-12-14 11:02:03,161 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-12-14 11:02:03,161 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-12-14 11:02:03,161 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-12-14 11:02:03,162 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-12-14 11:02:03,163 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-12-14 11:02:03,164 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-12-14 11:02:03,164 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-12-14 11:02:03,165 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-12-14 11:02:03,165 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-12-14 11:02:03,166 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-12-14 11:02:03,167 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-12-14 11:02:03,167 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-12-14 11:02:03,168 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-12-14 11:02:03,168 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-12-14 11:02:03,168 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-12-14 11:02:03,169 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-12-14 11:02:03,169 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-12-14 11:02:03,170 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f140266c-e2ed-4c5c-8bbc-cd3de90f4617/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf
[2022-12-14 11:02:03,190 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-12-14 11:02:03,191 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-12-14 11:02:03,191 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-12-14 11:02:03,191 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-12-14 11:02:03,192 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-12-14 11:02:03,192 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-12-14 11:02:03,192 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2022-12-14 11:02:03,192 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2022-12-14 11:02:03,193 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2022-12-14 11:02:03,193 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2022-12-14 11:02:03,193 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2022-12-14 11:02:03,193 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2022-12-14 11:02:03,193 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2022-12-14 11:02:03,194 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2022-12-14 11:02:03,194 INFO  L138        SettingsManager]:  * Interval Domain=false
[2022-12-14 11:02:03,194 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2022-12-14 11:02:03,194 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2022-12-14 11:02:03,194 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2022-12-14 11:02:03,195 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-12-14 11:02:03,195 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-12-14 11:02:03,196 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-12-14 11:02:03,196 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-12-14 11:02:03,196 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-12-14 11:02:03,196 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-12-14 11:02:03,196 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-12-14 11:02:03,197 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-12-14 11:02:03,197 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-12-14 11:02:03,197 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-12-14 11:02:03,197 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-12-14 11:02:03,197 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-12-14 11:02:03,198 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-12-14 11:02:03,198 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-12-14 11:02:03,198 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 11:02:03,198 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-12-14 11:02:03,198 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2022-12-14 11:02:03,199 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-12-14 11:02:03,199 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-12-14 11:02:03,199 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2022-12-14 11:02:03,199 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-12-14 11:02:03,199 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-12-14 11:02:03,199 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-12-14 11:02:03,200 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_f140266c-e2ed-4c5c-8bbc-cd3de90f4617/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_f140266c-e2ed-4c5c-8bbc-cd3de90f4617/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 -> 8bbc9a798bf0c903a7e47ceeff27ebe8197fe0e6eaf0d86b6b6297bc583d1018
[2022-12-14 11:02:03,378 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-12-14 11:02:03,398 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-12-14 11:02:03,400 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-12-14 11:02:03,401 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-12-14 11:02:03,402 INFO  L275        PluginConnector]: CDTParser initialized
[2022-12-14 11:02:03,403 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f140266c-e2ed-4c5c-8bbc-cd3de90f4617/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/eca-rers2012/Problem07_label42.c
[2022-12-14 11:02:06,007 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-12-14 11:02:06,941 INFO  L351              CDTParser]: Found 1 translation units.
[2022-12-14 11:02:06,942 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f140266c-e2ed-4c5c-8bbc-cd3de90f4617/sv-benchmarks/c/eca-rers2012/Problem07_label42.c
[2022-12-14 11:02:07,092 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f140266c-e2ed-4c5c-8bbc-cd3de90f4617/bin/utaipan-gh47qXpMRh/data/0bfc2d200/425592deba8c4a65bf8b1339339194d7/FLAGb1fda1f92
[2022-12-14 11:02:07,102 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f140266c-e2ed-4c5c-8bbc-cd3de90f4617/bin/utaipan-gh47qXpMRh/data/0bfc2d200/425592deba8c4a65bf8b1339339194d7
[2022-12-14 11:02:07,103 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-12-14 11:02:07,104 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-12-14 11:02:07,105 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-12-14 11:02:07,105 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-12-14 11:02:07,107 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-12-14 11:02:07,108 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:02:07" (1/1) ...
[2022-12-14 11:02:07,109 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9773d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:07, skipping insertion in model container
[2022-12-14 11:02:07,109 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:02:07" (1/1) ...
[2022-12-14 11:02:07,114 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-12-14 11:02:07,708 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-12-14 11:02:17,312 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_f140266c-e2ed-4c5c-8bbc-cd3de90f4617/sv-benchmarks/c/eca-rers2012/Problem07_label42.c[2768647,2768660]
[2022-12-14 11:02:17,367 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 11:02:17,374 INFO  L203         MainTranslator]: Completed pre-run
[2022-12-14 11:02:23,203 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_f140266c-e2ed-4c5c-8bbc-cd3de90f4617/sv-benchmarks/c/eca-rers2012/Problem07_label42.c[2768647,2768660]
[2022-12-14 11:02:23,212 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 11:02:23,790 INFO  L208         MainTranslator]: Completed translation
[2022-12-14 11:02:23,790 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:23 WrapperNode
[2022-12-14 11:02:23,791 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-12-14 11:02:23,791 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-12-14 11:02:23,791 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-12-14 11:02:23,791 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-12-14 11:02:23,797 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:23" (1/1) ...
[2022-12-14 11:02:24,086 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:23" (1/1) ...
[2022-12-14 11:02:25,505 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2022-12-14 11:02:25,506 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-12-14 11:02:25,507 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-12-14 11:02:25,507 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-12-14 11:02:25,507 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-12-14 11:02:25,514 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:23" (1/1) ...
[2022-12-14 11:02:25,514 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:23" (1/1) ...
[2022-12-14 11:02:25,740 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:23" (1/1) ...
[2022-12-14 11:02:25,741 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:23" (1/1) ...
[2022-12-14 11:02:26,179 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:23" (1/1) ...
[2022-12-14 11:02:26,275 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:23" (1/1) ...
[2022-12-14 11:02:26,462 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:23" (1/1) ...
[2022-12-14 11:02:26,530 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:23" (1/1) ...
[2022-12-14 11:02:26,802 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-12-14 11:02:26,802 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-12-14 11:02:26,803 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-12-14 11:02:26,803 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-12-14 11:02:26,803 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:23" (1/1) ...
[2022-12-14 11:02:26,809 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 11:02:26,817 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f140266c-e2ed-4c5c-8bbc-cd3de90f4617/bin/utaipan-gh47qXpMRh/z3
[2022-12-14 11:02:26,827 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f140266c-e2ed-4c5c-8bbc-cd3de90f4617/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-12-14 11:02:26,829 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f140266c-e2ed-4c5c-8bbc-cd3de90f4617/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-12-14 11:02:26,853 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-12-14 11:02:26,853 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-12-14 11:02:26,853 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-12-14 11:02:26,854 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-12-14 11:02:26,947 INFO  L235             CfgBuilder]: Building ICFG
[2022-12-14 11:02:26,948 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-12-14 11:02:58,915 INFO  L276             CfgBuilder]: Performing block encoding
[2022-12-14 11:02:59,632 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-12-14 11:02:59,632 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-12-14 11:02:59,640 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:02:59 BoogieIcfgContainer
[2022-12-14 11:02:59,640 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-12-14 11:02:59,642 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-12-14 11:02:59,642 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-12-14 11:02:59,644 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-12-14 11:02:59,645 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:02:07" (1/3) ...
[2022-12-14 11:02:59,645 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d4fc82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:02:59, skipping insertion in model container
[2022-12-14 11:02:59,645 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:23" (2/3) ...
[2022-12-14 11:02:59,645 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d4fc82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:02:59, skipping insertion in model container
[2022-12-14 11:02:59,645 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:02:59" (3/3) ...
[2022-12-14 11:02:59,646 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem07_label42.c
[2022-12-14 11:02:59,660 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-12-14 11:02:59,660 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-12-14 11:02:59,783 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-12-14 11:02:59,788 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;@3773a9d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-12-14 11:02:59,788 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-12-14 11:02:59,811 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 11:03:00,401 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10086
[2022-12-14 11:03:00,402 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 11:03:00,412 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 11:03:00,416 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 11:03:00,430 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 11:03:00,433 INFO  L85        PathProgramCache]: Analyzing trace with hash 184856616, now seen corresponding path program 1 times
[2022-12-14 11:03:00,439 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 11:03:00,440 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300458370]
[2022-12-14 11:03:00,442 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 11:03:00,442 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 11:03:02,981 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 11:03:32,368 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 11:03:32,368 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 11:03:32,368 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300458370]
[2022-12-14 11:03:32,369 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300458370] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 11:03:32,369 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 11:03:32,370 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 11:03:32,371 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841686833]
[2022-12-14 11:03:32,371 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 11:03:32,381 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 11:03:32,381 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 11:03:32,408 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 11:03:32,409 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 11:03:32,427 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 11:04:00,031 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 11:04:00,031 INFO  L93              Difference]: Finished difference Result 30401 states and 60647 transitions.
[2022-12-14 11:04:00,032 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 11:04:00,036 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 11:04:00,050 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 11:04:00,105 INFO  L225             Difference]: With dead ends: 30401
[2022-12-14 11:04:00,105 INFO  L226             Difference]: Without dead ends: 20263
[2022-12-14 11:04:00,117 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 11:04:00,120 INFO  L413           NwaCegarLoop]: 3725 mSDtfsCounter, 1225 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 29611 mSolverCounterSat, 14048 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 3775 SdHoareTripleChecker+Invalid, 43659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14048 IncrementalHoareTripleChecker+Valid, 29611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time
[2022-12-14 11:04:00,120 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 3775 Invalid, 43659 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14048 Valid, 29611 Invalid, 0 Unknown, 0 Unchecked, 27.1s Time]
[2022-12-14 11:04:00,151 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20263 states.
[2022-12-14 11:04:00,389 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20263 to 20263.
[2022-12-14 11:04:00,418 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20263 states, 20262 states have (on average 1.814381601026552) internal successors, (36763), 20262 states have internal predecessors, (36763), 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 11:04:00,453 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20263 states to 20263 states and 36763 transitions.
[2022-12-14 11:04:00,454 INFO  L78                 Accepts]: Start accepts. Automaton has 20263 states and 36763 transitions. Word has length 10085
[2022-12-14 11:04:00,464 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 11:04:00,465 INFO  L495      AbstractCegarLoop]: Abstraction has 20263 states and 36763 transitions.
[2022-12-14 11:04:00,467 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 11:04:00,467 INFO  L276                IsEmpty]: Start isEmpty. Operand 20263 states and 36763 transitions.
[2022-12-14 11:04:01,114 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10093
[2022-12-14 11:04:01,114 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 11:04:01,124 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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 11:04:01,124 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-12-14 11:04:01,125 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 11:04:01,126 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 11:04:01,136 INFO  L85        PathProgramCache]: Analyzing trace with hash -1419559599, now seen corresponding path program 1 times
[2022-12-14 11:04:01,136 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 11:04:01,136 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673025646]
[2022-12-14 11:04:01,140 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 11:04:01,140 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 11:04:02,399 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 11:04:22,655 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 11:04:22,656 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 11:04:22,656 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673025646]
[2022-12-14 11:04:22,656 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673025646] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 11:04:22,656 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 11:04:22,657 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 11:04:22,657 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789147245]
[2022-12-14 11:04:22,657 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 11:04:22,669 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 11:04:22,669 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 11:04:22,675 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 11:04:22,676 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 11:04:22,679 INFO  L87              Difference]: Start difference. First operand 20263 states and 36763 transitions. Second operand  has 3 states, 3 states have (on average 3364.0) internal successors, (10092), 2 states have internal predecessors, (10092), 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 11:04:52,449 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 11:04:52,449 INFO  L93              Difference]: Finished difference Result 60785 states and 110286 transitions.
[2022-12-14 11:04:52,450 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 11:04:52,452 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3364.0) internal successors, (10092), 2 states have internal predecessors, (10092), 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 10092
[2022-12-14 11:04:52,452 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 11:04:52,518 INFO  L225             Difference]: With dead ends: 60785
[2022-12-14 11:04:52,518 INFO  L226             Difference]: Without dead ends: 40523
[2022-12-14 11:04:52,536 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 11:04:52,538 INFO  L413           NwaCegarLoop]: 6642 mSDtfsCounter, 12010 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30112 mSolverCounterSat, 11203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12010 SdHoareTripleChecker+Valid, 6691 SdHoareTripleChecker+Invalid, 41315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11203 IncrementalHoareTripleChecker+Valid, 30112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.1s IncrementalHoareTripleChecker+Time
[2022-12-14 11:04:52,538 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12010 Valid, 6691 Invalid, 41315 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11203 Valid, 30112 Invalid, 0 Unknown, 0 Unchecked, 29.1s Time]
[2022-12-14 11:04:52,567 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40523 states.
[2022-12-14 11:04:53,008 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40523 to 40523.
[2022-12-14 11:04:53,041 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40523 states, 40522 states have (on average 1.6253146438971422) internal successors, (65861), 40522 states have internal predecessors, (65861), 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 11:04:53,111 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40523 states to 40523 states and 65861 transitions.
[2022-12-14 11:04:53,111 INFO  L78                 Accepts]: Start accepts. Automaton has 40523 states and 65861 transitions. Word has length 10092
[2022-12-14 11:04:53,113 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 11:04:53,113 INFO  L495      AbstractCegarLoop]: Abstraction has 40523 states and 65861 transitions.
[2022-12-14 11:04:53,114 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3364.0) internal successors, (10092), 2 states have internal predecessors, (10092), 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 11:04:53,114 INFO  L276                IsEmpty]: Start isEmpty. Operand 40523 states and 65861 transitions.
[2022-12-14 11:04:53,754 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10099
[2022-12-14 11:04:53,755 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 11:04:53,757 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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[2022-12-14 11:04:53,758 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-12-14 11:04:53,758 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 11:04:53,758 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 11:04:53,760 INFO  L85        PathProgramCache]: Analyzing trace with hash -1996852626, now seen corresponding path program 1 times
[2022-12-14 11:04:53,760 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 11:04:53,760 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303656786]
[2022-12-14 11:04:53,761 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 11:04:53,761 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 11:04:55,179 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 11:05:15,683 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2022-12-14 11:05:15,684 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 11:05:15,684 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303656786]
[2022-12-14 11:05:15,684 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303656786] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 11:05:15,684 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 11:05:15,685 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 11:05:15,685 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45250326]
[2022-12-14 11:05:15,685 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 11:05:15,690 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 11:05:15,690 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 11:05:15,695 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 11:05:15,695 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 11:05:15,697 INFO  L87              Difference]: Start difference. First operand 40523 states and 65861 transitions. Second operand  has 3 states, 3 states have (on average 3364.0) internal successors, (10092), 2 states have internal predecessors, (10092), 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 11:05:44,990 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 11:05:44,991 INFO  L93              Difference]: Finished difference Result 121565 states and 197580 transitions.
[2022-12-14 11:05:44,991 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 11:05:44,992 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3364.0) internal successors, (10092), 2 states have internal predecessors, (10092), 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 10098
[2022-12-14 11:05:44,992 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 11:05:45,070 INFO  L225             Difference]: With dead ends: 121565
[2022-12-14 11:05:45,070 INFO  L226             Difference]: Without dead ends: 81043
[2022-12-14 11:05:45,096 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 11:05:45,097 INFO  L413           NwaCegarLoop]: 4816 mSDtfsCounter, 13625 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 28708 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13625 SdHoareTripleChecker+Valid, 4864 SdHoareTripleChecker+Invalid, 40385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 28708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.6s IncrementalHoareTripleChecker+Time
[2022-12-14 11:05:45,098 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13625 Valid, 4864 Invalid, 40385 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 28708 Invalid, 0 Unknown, 0 Unchecked, 28.6s Time]
[2022-12-14 11:05:45,167 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81043 states.
[2022-12-14 11:05:45,875 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81043 to 81043.
[2022-12-14 11:05:45,932 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81043 states, 81042 states have (on average 1.4782952049554552) internal successors, (119804), 81042 states have internal predecessors, (119804), 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 11:05:46,033 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81043 states to 81043 states and 119804 transitions.
[2022-12-14 11:05:46,033 INFO  L78                 Accepts]: Start accepts. Automaton has 81043 states and 119804 transitions. Word has length 10098
[2022-12-14 11:05:46,037 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 11:05:46,037 INFO  L495      AbstractCegarLoop]: Abstraction has 81043 states and 119804 transitions.
[2022-12-14 11:05:46,039 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3364.0) internal successors, (10092), 2 states have internal predecessors, (10092), 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 11:05:46,039 INFO  L276                IsEmpty]: Start isEmpty. Operand 81043 states and 119804 transitions.
[2022-12-14 11:05:46,718 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10127
[2022-12-14 11:05:46,718 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 11:05:46,721 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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 11:05:46,721 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-12-14 11:05:46,721 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 11:05:46,722 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 11:05:46,724 INFO  L85        PathProgramCache]: Analyzing trace with hash 12593666, now seen corresponding path program 1 times
[2022-12-14 11:05:46,724 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 11:05:46,724 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876336629]
[2022-12-14 11:05:46,725 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 11:05:46,725 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 11:05:47,738 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 11:06:11,740 INFO  L134       CoverageAnalysis]: Checked inductivity of 57 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2022-12-14 11:06:11,740 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 11:06:11,740 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876336629]
[2022-12-14 11:06:11,740 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876336629] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 11:06:11,741 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 11:06:11,742 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 11:06:11,742 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343374027]
[2022-12-14 11:06:11,742 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 11:06:11,750 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 11:06:11,750 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 11:06:11,757 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 11:06:11,757 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 11:06:11,760 INFO  L87              Difference]: Start difference. First operand 81043 states and 119804 transitions. Second operand  has 3 states, 3 states have (on average 3371.6666666666665) internal successors, (10115), 2 states have internal predecessors, (10115), 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 11:06:40,510 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 11:06:40,510 INFO  L93              Difference]: Finished difference Result 202605 states and 295307 transitions.
[2022-12-14 11:06:40,511 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 11:06:40,512 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3371.6666666666665) internal successors, (10115), 2 states have internal predecessors, (10115), 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 10126
[2022-12-14 11:06:40,513 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 11:06:40,620 INFO  L225             Difference]: With dead ends: 202605
[2022-12-14 11:06:40,621 INFO  L226             Difference]: Without dead ends: 121563
[2022-12-14 11:06:40,651 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 11:06:40,652 INFO  L413           NwaCegarLoop]: 5599 mSDtfsCounter, 10681 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 33062 mSolverCounterSat, 8115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10681 SdHoareTripleChecker+Valid, 5647 SdHoareTripleChecker+Invalid, 41177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8115 IncrementalHoareTripleChecker+Valid, 33062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.9s IncrementalHoareTripleChecker+Time
[2022-12-14 11:06:40,652 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10681 Valid, 5647 Invalid, 41177 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8115 Valid, 33062 Invalid, 0 Unknown, 0 Unchecked, 27.9s Time]
[2022-12-14 11:06:40,719 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 121563 states.
[2022-12-14 11:06:41,539 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 121563 to 121563.
[2022-12-14 11:06:41,619 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 121563 states, 121562 states have (on average 1.3083035817113902) internal successors, (159040), 121562 states have internal predecessors, (159040), 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 11:06:41,758 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 121563 states to 121563 states and 159040 transitions.
[2022-12-14 11:06:41,758 INFO  L78                 Accepts]: Start accepts. Automaton has 121563 states and 159040 transitions. Word has length 10126
[2022-12-14 11:06:41,759 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 11:06:41,759 INFO  L495      AbstractCegarLoop]: Abstraction has 121563 states and 159040 transitions.
[2022-12-14 11:06:41,760 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3371.6666666666665) internal successors, (10115), 2 states have internal predecessors, (10115), 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 11:06:41,761 INFO  L276                IsEmpty]: Start isEmpty. Operand 121563 states and 159040 transitions.
[2022-12-14 11:06:42,610 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10130
[2022-12-14 11:06:42,610 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 11:06:42,612 INFO  L195           NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 11:06:42,613 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-12-14 11:06:42,613 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 11:06:42,613 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 11:06:42,615 INFO  L85        PathProgramCache]: Analyzing trace with hash -582061965, now seen corresponding path program 1 times
[2022-12-14 11:06:42,615 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 11:06:42,615 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031112111]
[2022-12-14 11:06:42,616 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 11:06:42,616 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 11:06:43,642 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 11:07:07,744 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2022-12-14 11:07:07,744 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 11:07:07,745 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031112111]
[2022-12-14 11:07:07,745 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031112111] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 11:07:07,745 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 11:07:07,745 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 11:07:07,746 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52405002]
[2022-12-14 11:07:07,746 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 11:07:07,750 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 11:07:07,750 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 11:07:07,755 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 11:07:07,755 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 11:07:07,756 INFO  L87              Difference]: Start difference. First operand 121563 states and 159040 transitions. Second operand  has 3 states, 3 states have (on average 3374.3333333333335) internal successors, (10123), 2 states have internal predecessors, (10123), 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 11:07:37,742 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 11:07:37,742 INFO  L93              Difference]: Finished difference Result 364685 states and 477117 transitions.
[2022-12-14 11:07:37,743 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 11:07:37,745 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3374.3333333333335) internal successors, (10123), 2 states have internal predecessors, (10123), 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 10129
[2022-12-14 11:07:37,745 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 11:07:38,050 INFO  L225             Difference]: With dead ends: 364685
[2022-12-14 11:07:38,050 INFO  L226             Difference]: Without dead ends: 243123
[2022-12-14 11:07:38,148 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 11:07:38,149 INFO  L413           NwaCegarLoop]: 8155 mSDtfsCounter, 11705 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 27800 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11705 SdHoareTripleChecker+Valid, 8203 SdHoareTripleChecker+Invalid, 40830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time
[2022-12-14 11:07:38,149 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11705 Valid, 8203 Invalid, 40830 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27800 Invalid, 0 Unknown, 0 Unchecked, 28.7s Time]
[2022-12-14 11:07:38,262 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 243123 states.
[2022-12-14 11:07:39,996 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 243123 to 243123.
[2022-12-14 11:07:40,116 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 243123 states, 243122 states have (on average 1.2228428525596202) internal successors, (297300), 243122 states have internal predecessors, (297300), 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 11:07:40,515 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 243123 states to 243123 states and 297300 transitions.
[2022-12-14 11:07:40,515 INFO  L78                 Accepts]: Start accepts. Automaton has 243123 states and 297300 transitions. Word has length 10129
[2022-12-14 11:07:40,516 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 11:07:40,516 INFO  L495      AbstractCegarLoop]: Abstraction has 243123 states and 297300 transitions.
[2022-12-14 11:07:40,518 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3374.3333333333335) internal successors, (10123), 2 states have internal predecessors, (10123), 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 11:07:40,518 INFO  L276                IsEmpty]: Start isEmpty. Operand 243123 states and 297300 transitions.
[2022-12-14 11:07:41,369 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10162
[2022-12-14 11:07:41,369 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 11:07:41,372 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:07:41,372 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-12-14 11:07:41,372 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 11:07:41,372 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 11:07:41,374 INFO  L85        PathProgramCache]: Analyzing trace with hash 1755016899, now seen corresponding path program 1 times
[2022-12-14 11:07:41,374 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 11:07:41,374 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677788244]
[2022-12-14 11:07:41,375 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 11:07:41,375 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 11:07:42,404 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 11:08:03,660 INFO  L134       CoverageAnalysis]: Checked inductivity of 81 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2022-12-14 11:08:03,660 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 11:08:03,660 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677788244]
[2022-12-14 11:08:03,661 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677788244] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 11:08:03,661 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 11:08:03,661 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 11:08:03,661 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895784859]
[2022-12-14 11:08:03,662 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 11:08:03,666 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 11:08:03,666 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 11:08:03,671 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 11:08:03,671 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 11:08:03,673 INFO  L87              Difference]: Start difference. First operand 243123 states and 297300 transitions. Second operand  has 3 states, 3 states have (on average 3385.0) internal successors, (10155), 2 states have internal predecessors, (10155), 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 11:08:37,164 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 11:08:37,165 INFO  L93              Difference]: Finished difference Result 729365 states and 891897 transitions.
[2022-12-14 11:08:37,165 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 11:08:37,167 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3385.0) internal successors, (10155), 2 states have internal predecessors, (10155), 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 10161
[2022-12-14 11:08:37,167 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 11:08:37,834 INFO  L225             Difference]: With dead ends: 729365
[2022-12-14 11:08:37,834 INFO  L226             Difference]: Without dead ends: 486243
[2022-12-14 11:08:37,933 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 11:08:37,933 INFO  L413           NwaCegarLoop]: 7737 mSDtfsCounter, 11710 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 29455 mSolverCounterSat, 11755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11710 SdHoareTripleChecker+Valid, 7785 SdHoareTripleChecker+Invalid, 41210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11755 IncrementalHoareTripleChecker+Valid, 29455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.5s IncrementalHoareTripleChecker+Time
[2022-12-14 11:08:37,934 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11710 Valid, 7785 Invalid, 41210 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11755 Valid, 29455 Invalid, 0 Unknown, 0 Unchecked, 31.5s Time]
[2022-12-14 11:08:38,201 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 486243 states.
[2022-12-14 11:08:41,921 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 486243 to 486243.
[2022-12-14 11:08:42,118 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 486243 states, 486242 states have (on average 1.1694259237169968) internal successors, (568624), 486242 states have internal predecessors, (568624), 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 11:08:42,803 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 486243 states to 486243 states and 568624 transitions.
[2022-12-14 11:08:42,803 INFO  L78                 Accepts]: Start accepts. Automaton has 486243 states and 568624 transitions. Word has length 10161
[2022-12-14 11:08:42,804 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 11:08:42,804 INFO  L495      AbstractCegarLoop]: Abstraction has 486243 states and 568624 transitions.
[2022-12-14 11:08:42,805 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3385.0) internal successors, (10155), 2 states have internal predecessors, (10155), 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 11:08:42,805 INFO  L276                IsEmpty]: Start isEmpty. Operand 486243 states and 568624 transitions.
[2022-12-14 11:08:43,980 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10257
[2022-12-14 11:08:43,980 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 11:08:43,982 INFO  L195           NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:08:43,982 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-12-14 11:08:43,982 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 11:08:43,982 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 11:08:43,984 INFO  L85        PathProgramCache]: Analyzing trace with hash 1931348187, now seen corresponding path program 1 times
[2022-12-14 11:08:43,984 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 11:08:43,984 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862917144]
[2022-12-14 11:08:43,984 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 11:08:43,985 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 11:08:45,058 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 11:09:05,958 INFO  L134       CoverageAnalysis]: Checked inductivity of 243 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked.
[2022-12-14 11:09:05,958 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 11:09:05,958 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862917144]
[2022-12-14 11:09:05,958 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862917144] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 11:09:05,958 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 11:09:05,959 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 11:09:05,959 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204327333]
[2022-12-14 11:09:05,959 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 11:09:05,965 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 11:09:05,965 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 11:09:05,970 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 11:09:05,970 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 11:09:05,972 INFO  L87              Difference]: Start difference. First operand 486243 states and 568624 transitions. Second operand  has 3 states, 3 states have (on average 3395.6666666666665) internal successors, (10187), 2 states have internal predecessors, (10187), 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 11:09:38,018 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 11:09:38,018 INFO  L93              Difference]: Finished difference Result 1458725 states and 1705869 transitions.
[2022-12-14 11:09:38,019 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 11:09:38,020 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3395.6666666666665) internal successors, (10187), 2 states have internal predecessors, (10187), 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 10256
[2022-12-14 11:09:38,020 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 11:09:39,412 INFO  L225             Difference]: With dead ends: 1458725
[2022-12-14 11:09:39,412 INFO  L226             Difference]: Without dead ends: 972483
[2022-12-14 11:09:39,644 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 11:09:39,645 INFO  L413           NwaCegarLoop]: 7850 mSDtfsCounter, 11366 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 30490 mSolverCounterSat, 11011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11366 SdHoareTripleChecker+Valid, 7898 SdHoareTripleChecker+Invalid, 41501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11011 IncrementalHoareTripleChecker+Valid, 30490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time
[2022-12-14 11:09:39,646 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11366 Valid, 7898 Invalid, 41501 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11011 Valid, 30490 Invalid, 0 Unknown, 0 Unchecked, 28.5s Time]
[2022-12-14 11:09:40,348 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 972483 states.
[2022-12-14 11:09:47,427 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 972483 to 972483.
[2022-12-14 11:09:47,923 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 972483 states, 972482 states have (on average 1.1278111060153297) internal successors, (1096776), 972482 states have internal predecessors, (1096776), 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 11:09:49,581 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 972483 states to 972483 states and 1096776 transitions.
[2022-12-14 11:09:49,581 INFO  L78                 Accepts]: Start accepts. Automaton has 972483 states and 1096776 transitions. Word has length 10256
[2022-12-14 11:09:49,581 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 11:09:49,582 INFO  L495      AbstractCegarLoop]: Abstraction has 972483 states and 1096776 transitions.
[2022-12-14 11:09:49,583 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3395.6666666666665) internal successors, (10187), 2 states have internal predecessors, (10187), 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 11:09:49,583 INFO  L276                IsEmpty]: Start isEmpty. Operand 972483 states and 1096776 transitions.
[2022-12-14 11:09:51,481 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10273
[2022-12-14 11:09:51,481 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 11:09:51,483 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:09:51,483 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-12-14 11:09:51,483 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 11:09:51,483 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 11:09:51,484 INFO  L85        PathProgramCache]: Analyzing trace with hash 988316943, now seen corresponding path program 1 times
[2022-12-14 11:09:51,484 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 11:09:51,484 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753848643]
[2022-12-14 11:09:51,485 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 11:09:51,485 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 11:09:52,561 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 11:10:13,797 INFO  L134       CoverageAnalysis]: Checked inductivity of 186 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 11:10:13,797 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 11:10:13,797 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753848643]
[2022-12-14 11:10:13,797 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753848643] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 11:10:13,797 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 11:10:13,798 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 11:10:13,798 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142036825]
[2022-12-14 11:10:13,798 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 11:10:13,803 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 11:10:13,803 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 11:10:13,807 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 11:10:13,807 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 11:10:13,809 INFO  L87              Difference]: Start difference. First operand 972483 states and 1096776 transitions. Second operand  has 3 states, 3 states have (on average 3424.0) internal successors, (10272), 2 states have internal predecessors, (10272), 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 11:10:51,200 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 11:10:51,200 INFO  L93              Difference]: Finished difference Result 2917445 states and 3290325 transitions.
[2022-12-14 11:10:51,201 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 11:10:51,202 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3424.0) internal successors, (10272), 2 states have internal predecessors, (10272), 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 10272
[2022-12-14 11:10:51,202 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 11:10:53,775 INFO  L225             Difference]: With dead ends: 2917445
[2022-12-14 11:10:53,775 INFO  L226             Difference]: Without dead ends: 1944963
[2022-12-14 11:10:54,283 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 11:10:54,283 INFO  L413           NwaCegarLoop]: 6650 mSDtfsCounter, 12149 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 30662 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12149 SdHoareTripleChecker+Valid, 6698 SdHoareTripleChecker+Invalid, 41163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 30662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time
[2022-12-14 11:10:54,284 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12149 Valid, 6698 Invalid, 41163 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 30662 Invalid, 0 Unknown, 0 Unchecked, 30.3s Time]
[2022-12-14 11:10:55,626 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1944963 states.
[2022-12-14 11:11:10,717 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944963 to 1934833.
[2022-12-14 11:11:11,339 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1934833 states, 1934832 states have (on average 1.097494769571725) internal successors, (2123468), 1934832 states have internal predecessors, (2123468), 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 11:11:14,672 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1934833 states to 1934833 states and 2123468 transitions.
[2022-12-14 11:11:14,672 INFO  L78                 Accepts]: Start accepts. Automaton has 1934833 states and 2123468 transitions. Word has length 10272
[2022-12-14 11:11:14,673 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 11:11:14,673 INFO  L495      AbstractCegarLoop]: Abstraction has 1934833 states and 2123468 transitions.
[2022-12-14 11:11:14,675 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3424.0) internal successors, (10272), 2 states have internal predecessors, (10272), 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 11:11:14,675 INFO  L276                IsEmpty]: Start isEmpty. Operand 1934833 states and 2123468 transitions.
[2022-12-14 11:11:17,630 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10362
[2022-12-14 11:11:17,631 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 11:11:17,632 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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[2022-12-14 11:11:17,632 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-12-14 11:11:17,632 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 11:11:17,633 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 11:11:17,634 INFO  L85        PathProgramCache]: Analyzing trace with hash 1254460301, now seen corresponding path program 1 times
[2022-12-14 11:11:17,634 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 11:11:17,634 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824248998]
[2022-12-14 11:11:17,635 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 11:11:17,635 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 11:11:18,711 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 11:11:52,998 INFO  L134       CoverageAnalysis]: Checked inductivity of 314 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked.
[2022-12-14 11:11:52,998 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 11:11:52,998 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824248998]
[2022-12-14 11:11:52,998 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824248998] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 11:11:52,998 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 11:11:52,999 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 11:11:52,999 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14019075]
[2022-12-14 11:11:52,999 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 11:11:53,004 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 11:11:53,004 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 11:11:53,009 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 11:11:53,009 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 11:11:53,011 INFO  L87              Difference]: Start difference. First operand 1934833 states and 2123468 transitions. Second operand  has 3 states, 3 states have (on average 3440.3333333333335) internal successors, (10321), 2 states have internal predecessors, (10321), 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)