./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label34.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 839c364b
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e744d6da-5f18-4490-a993-2427a6345fa5/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e744d6da-5f18-4490-a993-2427a6345fa5/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e744d6da-5f18-4490-a993-2427a6345fa5/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e744d6da-5f18-4490-a993-2427a6345fa5/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label34.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e744d6da-5f18-4490-a993-2427a6345fa5/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e744d6da-5f18-4490-a993-2427a6345fa5/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 34e724a92da3ddc47165c49dd7e6015b276ced6a8424035e540d9024f267626a
--- Real Ultimate output ---
This is Ultimate 0.2.2-hotfix-svcomp22-839c364
[2021-12-06 23:37:08,084 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-12-06 23:37:08,086 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-06 23:37:08,108 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-06 23:37:08,108 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-06 23:37:08,109 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-06 23:37:08,110 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-06 23:37:08,112 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-06 23:37:08,114 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-06 23:37:08,114 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-06 23:37:08,115 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-12-06 23:37:08,116 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-06 23:37:08,117 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-06 23:37:08,117 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-06 23:37:08,119 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-06 23:37:08,120 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-06 23:37:08,120 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-06 23:37:08,121 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-06 23:37:08,123 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-06 23:37:08,124 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-06 23:37:08,126 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-06 23:37:08,127 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-06 23:37:08,128 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-12-06 23:37:08,129 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-06 23:37:08,131 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-06 23:37:08,132 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-06 23:37:08,132 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-06 23:37:08,133 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-06 23:37:08,133 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-06 23:37:08,134 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-06 23:37:08,134 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-06 23:37:08,135 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-06 23:37:08,136 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-06 23:37:08,136 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-06 23:37:08,137 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-06 23:37:08,137 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-06 23:37:08,138 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-06 23:37:08,138 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-06 23:37:08,138 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-06 23:37:08,139 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-06 23:37:08,139 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-12-06 23:37:08,140 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e744d6da-5f18-4490-a993-2427a6345fa5/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-06 23:37:08,158 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-12-06 23:37:08,158 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-06 23:37:08,158 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-06 23:37:08,159 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-06 23:37:08,159 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-06 23:37:08,159 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-06 23:37:08,160 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-06 23:37:08,160 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-12-06 23:37:08,160 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-12-06 23:37:08,160 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-06 23:37:08,160 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-12-06 23:37:08,160 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-12-06 23:37:08,160 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-12-06 23:37:08,160 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-12-06 23:37:08,161 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-12-06 23:37:08,161 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-06 23:37:08,161 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-12-06 23:37:08,161 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-12-06 23:37:08,161 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-12-06 23:37:08,161 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-12-06 23:37:08,161 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-12-06 23:37:08,161 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-06 23:37:08,161 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-12-06 23:37:08,162 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-12-06 23:37:08,162 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 23:37:08,162 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-06 23:37:08,162 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-12-06 23:37:08,162 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-06 23:37:08,162 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-12-06 23:37:08,162 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-06 23:37:08,162 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-12-06 23:37:08,162 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-06 23:37:08,162 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-06 23:37:08,163 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-12-06 23:37:08,163 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_e744d6da-5f18-4490-a993-2427a6345fa5/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e744d6da-5f18-4490-a993-2427a6345fa5/bin/uautomizer-DrprNOufMa
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34e724a92da3ddc47165c49dd7e6015b276ced6a8424035e540d9024f267626a
[2021-12-06 23:37:08,362 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-06 23:37:08,379 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-06 23:37:08,381 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-06 23:37:08,382 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-12-06 23:37:08,382 INFO  L275        PluginConnector]: CDTParser initialized
[2021-12-06 23:37:08,384 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e744d6da-5f18-4490-a993-2427a6345fa5/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-rers2012/Problem07_label34.c
[2021-12-06 23:37:08,434 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e744d6da-5f18-4490-a993-2427a6345fa5/bin/uautomizer-DrprNOufMa/data/9bb494ea5/eec42fd9f5ab410a834312229a2d6634/FLAG9d38a3ce8
[2021-12-06 23:37:09,990 INFO  L306              CDTParser]: Found 1 translation units.
[2021-12-06 23:37:09,991 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e744d6da-5f18-4490-a993-2427a6345fa5/sv-benchmarks/c/eca-rers2012/Problem07_label34.c
[2021-12-06 23:37:10,121 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e744d6da-5f18-4490-a993-2427a6345fa5/bin/uautomizer-DrprNOufMa/data/9bb494ea5/eec42fd9f5ab410a834312229a2d6634/FLAG9d38a3ce8
[2021-12-06 23:37:10,464 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e744d6da-5f18-4490-a993-2427a6345fa5/bin/uautomizer-DrprNOufMa/data/9bb494ea5/eec42fd9f5ab410a834312229a2d6634
[2021-12-06 23:37:10,466 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-06 23:37:10,467 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-06 23:37:10,468 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-06 23:37:10,468 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-06 23:37:10,471 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-06 23:37:10,472 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:37:10" (1/1) ...
[2021-12-06 23:37:10,473 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f43f188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:37:10, skipping insertion in model container
[2021-12-06 23:37:10,473 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:37:10" (1/1) ...
[2021-12-06 23:37:10,478 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-12-06 23:37:11,052 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-12-06 23:37:20,963 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e744d6da-5f18-4490-a993-2427a6345fa5/sv-benchmarks/c/eca-rers2012/Problem07_label34.c[2772565,2772578]
[2021-12-06 23:37:21,020 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 23:37:21,025 INFO  L203         MainTranslator]: Completed pre-run
[2021-12-06 23:37:26,996 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e744d6da-5f18-4490-a993-2427a6345fa5/sv-benchmarks/c/eca-rers2012/Problem07_label34.c[2772565,2772578]
[2021-12-06 23:37:27,001 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-06 23:37:27,651 INFO  L208         MainTranslator]: Completed translation
[2021-12-06 23:37:27,651 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:37:27 WrapperNode
[2021-12-06 23:37:27,651 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-06 23:37:27,652 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-06 23:37:27,652 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-06 23:37:27,652 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-06 23:37:27,657 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:37:27" (1/1) ...
[2021-12-06 23:37:27,915 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:37:27" (1/1) ...
[2021-12-06 23:37:29,051 INFO  L137                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2021-12-06 23:37:29,052 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-06 23:37:29,052 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-06 23:37:29,052 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-06 23:37:29,052 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-12-06 23:37:29,060 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:37:27" (1/1) ...
[2021-12-06 23:37:29,060 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:37:27" (1/1) ...
[2021-12-06 23:37:29,238 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:37:27" (1/1) ...
[2021-12-06 23:37:29,238 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:37:27" (1/1) ...
[2021-12-06 23:37:29,755 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:37:27" (1/1) ...
[2021-12-06 23:37:29,870 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:37:27" (1/1) ...
[2021-12-06 23:37:29,970 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:37:27" (1/1) ...
[2021-12-06 23:37:30,244 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-06 23:37:30,245 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-06 23:37:30,245 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-12-06 23:37:30,245 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-12-06 23:37:30,246 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:37:27" (1/1) ...
[2021-12-06 23:37:30,252 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-06 23:37:30,260 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e744d6da-5f18-4490-a993-2427a6345fa5/bin/uautomizer-DrprNOufMa/z3
[2021-12-06 23:37:30,270 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e744d6da-5f18-4490-a993-2427a6345fa5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-12-06 23:37:30,271 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e744d6da-5f18-4490-a993-2427a6345fa5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-12-06 23:37:30,299 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-06 23:37:30,299 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-06 23:37:30,300 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-06 23:37:30,300 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-06 23:37:30,399 INFO  L236             CfgBuilder]: Building ICFG
[2021-12-06 23:37:30,400 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-06 23:37:54,004 INFO  L277             CfgBuilder]: Performing block encoding
[2021-12-06 23:37:54,049 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-06 23:37:54,049 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-06 23:37:54,058 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:37:54 BoogieIcfgContainer
[2021-12-06 23:37:54,058 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-06 23:37:54,059 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-06 23:37:54,059 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-12-06 23:37:54,062 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-12-06 23:37:54,062 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:37:10" (1/3) ...
[2021-12-06 23:37:54,062 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f2ab98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:37:54, skipping insertion in model container
[2021-12-06 23:37:54,062 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:37:27" (2/3) ...
[2021-12-06 23:37:54,063 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f2ab98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:37:54, skipping insertion in model container
[2021-12-06 23:37:54,063 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:37:54" (3/3) ...
[2021-12-06 23:37:54,063 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem07_label34.c
[2021-12-06 23:37:54,067 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-06 23:37:54,068 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-06 23:37:54,130 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-06 23:37:54,137 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-12-06 23:37:54,137 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-06 23:37:54,257 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:37:54,838 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10121
[2021-12-06 23:37:54,838 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 23:37:54,844 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 23:37:54,846 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 23:37:54,862 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 23:37:54,868 INFO  L85        PathProgramCache]: Analyzing trace with hash 1542617250, now seen corresponding path program 1 times
[2021-12-06 23:37:54,874 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 23:37:54,874 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231950828]
[2021-12-06 23:37:54,877 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 23:37:54,878 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 23:37:56,470 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 23:38:15,846 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 23:38:15,846 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 23:38:15,847 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231950828]
[2021-12-06 23:38:15,847 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231950828] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 23:38:15,847 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 23:38:15,849 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 23:38:15,850 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795186719]
[2021-12-06 23:38:15,850 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 23:38:15,864 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 23:38:15,864 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 23:38:15,883 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 23:38:15,884 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:38:15,908 INFO  L87              Difference]: Start difference. First operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 3373.3333333333335) internal successors, (10120), 2 states have internal predecessors, (10120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:38:40,344 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 23:38:40,344 INFO  L93              Difference]: Finished difference Result 30705 states and 61134 transitions.
[2021-12-06 23:38:40,345 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 23:38:40,348 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3373.3333333333335) internal successors, (10120), 2 states have internal predecessors, (10120), 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 10120
[2021-12-06 23:38:40,367 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 23:38:40,467 INFO  L225             Difference]: With dead ends: 30705
[2021-12-06 23:38:40,467 INFO  L226             Difference]: Without dead ends: 20384
[2021-12-06 23:38:40,482 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:38:40,485 INFO  L933         BasicCegarLoop]: 739 mSDtfsCounter, 506 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 33762 mSolverCounterSat, 12120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 45882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12120 IncrementalHoareTripleChecker+Valid, 33762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time
[2021-12-06 23:38:40,485 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 792 Invalid, 45882 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12120 Valid, 33762 Invalid, 0 Unknown, 0 Unchecked, 23.9s Time]
[2021-12-06 23:38:40,525 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20384 states.
[2021-12-06 23:38:40,874 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20384 to 20384.
[2021-12-06 23:38:40,902 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20384 states, 20383 states have (on average 1.9570230093705538) internal successors, (39890), 20383 states have internal predecessors, (39890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:38:40,952 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20384 states to 20384 states and 39890 transitions.
[2021-12-06 23:38:40,953 INFO  L78                 Accepts]: Start accepts. Automaton has 20384 states and 39890 transitions. Word has length 10120
[2021-12-06 23:38:40,964 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 23:38:40,964 INFO  L470      AbstractCegarLoop]: Abstraction has 20384 states and 39890 transitions.
[2021-12-06 23:38:40,966 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3373.3333333333335) internal successors, (10120), 2 states have internal predecessors, (10120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:38:40,966 INFO  L276                IsEmpty]: Start isEmpty. Operand 20384 states and 39890 transitions.
[2021-12-06 23:38:41,550 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10126
[2021-12-06 23:38:41,550 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 23:38:41,555 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 23:38:41,555 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-06 23:38:41,556 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 23:38:41,556 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 23:38:41,562 INFO  L85        PathProgramCache]: Analyzing trace with hash 430128746, now seen corresponding path program 1 times
[2021-12-06 23:38:41,562 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 23:38:41,562 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193901139]
[2021-12-06 23:38:41,564 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 23:38:41,564 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 23:38:42,391 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 23:38:58,902 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 23:38:58,902 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 23:38:58,902 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193901139]
[2021-12-06 23:38:58,903 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193901139] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 23:38:58,903 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 23:38:58,904 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 23:38:58,904 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335821480]
[2021-12-06 23:38:58,905 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 23:38:58,914 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 23:38:58,914 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 23:38:58,915 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 23:38:58,915 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:38:58,919 INFO  L87              Difference]: Start difference. First operand 20384 states and 39890 transitions. Second operand  has 3 states, 3 states have (on average 3375.0) internal successors, (10125), 2 states have internal predecessors, (10125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:39:22,116 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 23:39:22,116 INFO  L93              Difference]: Finished difference Result 61146 states and 119665 transitions.
[2021-12-06 23:39:22,117 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 23:39:22,119 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3375.0) internal successors, (10125), 2 states have internal predecessors, (10125), 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 10125
[2021-12-06 23:39:22,119 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 23:39:22,185 INFO  L225             Difference]: With dead ends: 61146
[2021-12-06 23:39:22,185 INFO  L226             Difference]: Without dead ends: 40764
[2021-12-06 23:39:22,199 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:39:22,200 INFO  L933         BasicCegarLoop]: 4822 mSDtfsCounter, 13686 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28825 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13686 SdHoareTripleChecker+Valid, 4871 SdHoareTripleChecker+Invalid, 40502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 28825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time
[2021-12-06 23:39:22,201 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13686 Valid, 4871 Invalid, 40502 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 28825 Invalid, 0 Unknown, 0 Unchecked, 22.7s Time]
[2021-12-06 23:39:22,235 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40764 states.
[2021-12-06 23:39:22,597 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 40764.
[2021-12-06 23:39:22,631 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40764 states, 40763 states have (on average 1.731447636336874) internal successors, (70579), 40763 states have internal predecessors, (70579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:39:22,683 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40764 states to 40764 states and 70579 transitions.
[2021-12-06 23:39:22,683 INFO  L78                 Accepts]: Start accepts. Automaton has 40764 states and 70579 transitions. Word has length 10125
[2021-12-06 23:39:22,685 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 23:39:22,685 INFO  L470      AbstractCegarLoop]: Abstraction has 40764 states and 70579 transitions.
[2021-12-06 23:39:22,687 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3375.0) internal successors, (10125), 2 states have internal predecessors, (10125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:39:22,687 INFO  L276                IsEmpty]: Start isEmpty. Operand 40764 states and 70579 transitions.
[2021-12-06 23:39:23,279 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10136
[2021-12-06 23:39:23,280 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 23:39:23,284 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 23:39:23,285 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-06 23:39:23,285 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 23:39:23,285 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 23:39:23,288 INFO  L85        PathProgramCache]: Analyzing trace with hash -735195887, now seen corresponding path program 1 times
[2021-12-06 23:39:23,289 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 23:39:23,289 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343949336]
[2021-12-06 23:39:23,291 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 23:39:23,291 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 23:39:24,034 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 23:39:39,136 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 23:39:39,136 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 23:39:39,136 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343949336]
[2021-12-06 23:39:39,136 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343949336] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 23:39:39,137 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 23:39:39,138 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 23:39:39,138 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443362509]
[2021-12-06 23:39:39,138 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 23:39:39,145 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 23:39:39,145 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 23:39:39,145 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 23:39:39,146 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:39:39,148 INFO  L87              Difference]: Start difference. First operand 40764 states and 70579 transitions. Second operand  has 3 states, 3 states have (on average 3378.3333333333335) internal successors, (10135), 2 states have internal predecessors, (10135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:40:03,494 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 23:40:03,494 INFO  L93              Difference]: Finished difference Result 122286 states and 211732 transitions.
[2021-12-06 23:40:03,495 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 23:40:03,496 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3378.3333333333335) internal successors, (10135), 2 states have internal predecessors, (10135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10135
[2021-12-06 23:40:03,496 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 23:40:03,565 INFO  L225             Difference]: With dead ends: 122286
[2021-12-06 23:40:03,565 INFO  L226             Difference]: Without dead ends: 81524
[2021-12-06 23:40:03,594 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:40:03,595 INFO  L933         BasicCegarLoop]: 7617 mSDtfsCounter, 12053 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 35105 mSolverCounterSat, 6982 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12053 SdHoareTripleChecker+Valid, 7667 SdHoareTripleChecker+Invalid, 42087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6982 IncrementalHoareTripleChecker+Valid, 35105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time
[2021-12-06 23:40:03,596 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12053 Valid, 7667 Invalid, 42087 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6982 Valid, 35105 Invalid, 0 Unknown, 0 Unchecked, 23.8s Time]
[2021-12-06 23:40:03,643 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81524 states.
[2021-12-06 23:40:04,209 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81524 to 81524.
[2021-12-06 23:40:04,265 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81524 states, 81523 states have (on average 1.5510592102842142) internal successors, (126447), 81523 states have internal predecessors, (126447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:40:04,358 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81524 states to 81524 states and 126447 transitions.
[2021-12-06 23:40:04,358 INFO  L78                 Accepts]: Start accepts. Automaton has 81524 states and 126447 transitions. Word has length 10135
[2021-12-06 23:40:04,360 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 23:40:04,360 INFO  L470      AbstractCegarLoop]: Abstraction has 81524 states and 126447 transitions.
[2021-12-06 23:40:04,361 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3378.3333333333335) internal successors, (10135), 2 states have internal predecessors, (10135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:40:04,361 INFO  L276                IsEmpty]: Start isEmpty. Operand 81524 states and 126447 transitions.
[2021-12-06 23:40:05,074 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10137
[2021-12-06 23:40:05,074 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 23:40:05,079 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 23:40:05,079 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-12-06 23:40:05,079 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 23:40:05,079 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 23:40:05,082 INFO  L85        PathProgramCache]: Analyzing trace with hash 1436973329, now seen corresponding path program 1 times
[2021-12-06 23:40:05,082 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 23:40:05,082 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447448669]
[2021-12-06 23:40:05,083 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 23:40:05,083 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 23:40:05,821 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 23:40:20,173 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-12-06 23:40:20,173 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 23:40:20,173 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447448669]
[2021-12-06 23:40:20,173 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447448669] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 23:40:20,173 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 23:40:20,175 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 23:40:20,175 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373683083]
[2021-12-06 23:40:20,175 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 23:40:20,183 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 23:40:20,184 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 23:40:20,184 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 23:40:20,184 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:40:20,186 INFO  L87              Difference]: Start difference. First operand 81524 states and 126447 transitions. Second operand  has 3 states, 3 states have (on average 3377.3333333333335) internal successors, (10132), 2 states have internal predecessors, (10132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:40:44,976 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 23:40:44,976 INFO  L93              Difference]: Finished difference Result 244566 states and 379336 transitions.
[2021-12-06 23:40:44,976 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 23:40:44,978 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3377.3333333333335) internal successors, (10132), 2 states have internal predecessors, (10132), 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 10136
[2021-12-06 23:40:44,978 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 23:40:45,226 INFO  L225             Difference]: With dead ends: 244566
[2021-12-06 23:40:45,226 INFO  L226             Difference]: Without dead ends: 163044
[2021-12-06 23:40:45,260 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:40:45,261 INFO  L933         BasicCegarLoop]: 6554 mSDtfsCounter, 13060 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27577 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13060 SdHoareTripleChecker+Valid, 6603 SdHoareTripleChecker+Invalid, 40607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time
[2021-12-06 23:40:45,261 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13060 Valid, 6603 Invalid, 40607 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27577 Invalid, 0 Unknown, 0 Unchecked, 23.9s Time]
[2021-12-06 23:40:45,348 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 163044 states.
[2021-12-06 23:40:46,537 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 163044 to 163044.
[2021-12-06 23:40:46,642 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163044 states, 163043 states have (on average 1.3997105058174837) internal successors, (228213), 163043 states have internal predecessors, (228213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:40:46,835 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163044 states to 163044 states and 228213 transitions.
[2021-12-06 23:40:46,835 INFO  L78                 Accepts]: Start accepts. Automaton has 163044 states and 228213 transitions. Word has length 10136
[2021-12-06 23:40:46,836 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 23:40:46,837 INFO  L470      AbstractCegarLoop]: Abstraction has 163044 states and 228213 transitions.
[2021-12-06 23:40:46,838 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3377.3333333333335) internal successors, (10132), 2 states have internal predecessors, (10132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:40:46,838 INFO  L276                IsEmpty]: Start isEmpty. Operand 163044 states and 228213 transitions.
[2021-12-06 23:40:47,791 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10140
[2021-12-06 23:40:47,791 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 23:40:47,796 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 23:40:47,796 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-12-06 23:40:47,796 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 23:40:47,797 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 23:40:47,800 INFO  L85        PathProgramCache]: Analyzing trace with hash 515082729, now seen corresponding path program 1 times
[2021-12-06 23:40:47,800 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 23:40:47,800 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549971365]
[2021-12-06 23:40:47,801 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 23:40:47,801 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 23:40:48,676 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 23:41:02,809 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2021-12-06 23:41:02,809 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 23:41:02,809 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549971365]
[2021-12-06 23:41:02,809 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549971365] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 23:41:02,809 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 23:41:02,810 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 23:41:02,811 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572142109]
[2021-12-06 23:41:02,811 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 23:41:02,817 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 23:41:02,817 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 23:41:02,818 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 23:41:02,818 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:41:02,820 INFO  L87              Difference]: Start difference. First operand 163044 states and 228213 transitions. Second operand  has 3 states, 3 states have (on average 3375.0) internal successors, (10125), 2 states have internal predecessors, (10125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:41:27,740 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 23:41:27,741 INFO  L93              Difference]: Finished difference Result 489126 states and 684634 transitions.
[2021-12-06 23:41:27,741 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 23:41:27,742 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3375.0) internal successors, (10125), 2 states have internal predecessors, (10125), 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 10139
[2021-12-06 23:41:27,742 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 23:41:28,053 INFO  L225             Difference]: With dead ends: 489126
[2021-12-06 23:41:28,053 INFO  L226             Difference]: Without dead ends: 326084
[2021-12-06 23:41:28,117 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:41:28,118 INFO  L933         BasicCegarLoop]: 7230 mSDtfsCounter, 12256 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29482 mSolverCounterSat, 11755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12256 SdHoareTripleChecker+Valid, 7279 SdHoareTripleChecker+Invalid, 41237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11755 IncrementalHoareTripleChecker+Valid, 29482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time
[2021-12-06 23:41:28,119 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12256 Valid, 7279 Invalid, 41237 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11755 Valid, 29482 Invalid, 0 Unknown, 0 Unchecked, 23.5s Time]
[2021-12-06 23:41:28,304 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 326084 states.
[2021-12-06 23:41:30,634 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 326084 to 326084.
[2021-12-06 23:41:30,834 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 326084 states, 326083 states have (on average 1.3035914169091918) internal successors, (425079), 326083 states have internal predecessors, (425079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:41:31,199 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 326084 states to 326084 states and 425079 transitions.
[2021-12-06 23:41:31,199 INFO  L78                 Accepts]: Start accepts. Automaton has 326084 states and 425079 transitions. Word has length 10139
[2021-12-06 23:41:31,201 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 23:41:31,201 INFO  L470      AbstractCegarLoop]: Abstraction has 326084 states and 425079 transitions.
[2021-12-06 23:41:31,202 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3375.0) internal successors, (10125), 2 states have internal predecessors, (10125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:41:31,202 INFO  L276                IsEmpty]: Start isEmpty. Operand 326084 states and 425079 transitions.
[2021-12-06 23:41:32,420 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10142
[2021-12-06 23:41:32,420 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 23:41:32,424 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 23:41:32,424 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-12-06 23:41:32,424 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 23:41:32,424 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 23:41:32,427 INFO  L85        PathProgramCache]: Analyzing trace with hash -2060276670, now seen corresponding path program 1 times
[2021-12-06 23:41:32,427 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 23:41:32,427 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117507393]
[2021-12-06 23:41:32,428 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 23:41:32,428 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 23:41:33,167 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 23:41:47,424 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 23:41:47,424 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 23:41:47,424 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117507393]
[2021-12-06 23:41:47,425 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117507393] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 23:41:47,425 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 23:41:47,426 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 23:41:47,426 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757472299]
[2021-12-06 23:41:47,426 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 23:41:47,567 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 23:41:47,567 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 23:41:47,567 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 23:41:47,567 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:41:47,569 INFO  L87              Difference]: Start difference. First operand 326084 states and 425079 transitions. Second operand  has 3 states, 3 states have (on average 3380.3333333333335) internal successors, (10141), 2 states have internal predecessors, (10141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:42:10,744 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 23:42:10,745 INFO  L93              Difference]: Finished difference Result 815206 states and 1047340 transitions.
[2021-12-06 23:42:10,745 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 23:42:10,747 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3380.3333333333335) internal successors, (10141), 2 states have internal predecessors, (10141), 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 10141
[2021-12-06 23:42:10,747 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 23:42:11,260 INFO  L225             Difference]: With dead ends: 815206
[2021-12-06 23:42:11,260 INFO  L226             Difference]: Without dead ends: 489124
[2021-12-06 23:42:11,370 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:42:11,371 INFO  L933         BasicCegarLoop]: 8145 mSDtfsCounter, 11069 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28559 mSolverCounterSat, 7491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11069 SdHoareTripleChecker+Valid, 8194 SdHoareTripleChecker+Invalid, 36050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7491 IncrementalHoareTripleChecker+Valid, 28559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time
[2021-12-06 23:42:11,372 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [11069 Valid, 8194 Invalid, 36050 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7491 Valid, 28559 Invalid, 0 Unknown, 0 Unchecked, 21.3s Time]
[2021-12-06 23:42:11,761 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 489124 states.
[2021-12-06 23:42:15,473 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 489124 to 489124.
[2021-12-06 23:42:15,679 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 489124 states, 489123 states have (on average 1.2361001220551886) internal successors, (604605), 489123 states have internal predecessors, (604605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:42:16,545 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 489124 states to 489124 states and 604605 transitions.
[2021-12-06 23:42:16,545 INFO  L78                 Accepts]: Start accepts. Automaton has 489124 states and 604605 transitions. Word has length 10141
[2021-12-06 23:42:16,546 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 23:42:16,546 INFO  L470      AbstractCegarLoop]: Abstraction has 489124 states and 604605 transitions.
[2021-12-06 23:42:16,547 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3380.3333333333335) internal successors, (10141), 2 states have internal predecessors, (10141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:42:16,547 INFO  L276                IsEmpty]: Start isEmpty. Operand 489124 states and 604605 transitions.
[2021-12-06 23:42:17,737 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10171
[2021-12-06 23:42:17,737 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 23:42:17,739 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-06 23:42:17,739 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-12-06 23:42:17,740 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 23:42:17,740 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 23:42:17,741 INFO  L85        PathProgramCache]: Analyzing trace with hash -1016772873, now seen corresponding path program 1 times
[2021-12-06 23:42:17,741 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 23:42:17,741 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120500750]
[2021-12-06 23:42:17,742 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 23:42:17,742 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 23:42:18,504 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 23:42:33,013 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-06 23:42:33,013 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 23:42:33,013 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120500750]
[2021-12-06 23:42:33,014 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120500750] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 23:42:33,014 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 23:42:33,015 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 23:42:33,015 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438447123]
[2021-12-06 23:42:33,015 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 23:42:33,020 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 23:42:33,020 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 23:42:33,021 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 23:42:33,021 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:42:33,023 INFO  L87              Difference]: Start difference. First operand 489124 states and 604605 transitions. Second operand  has 3 states, 3 states have (on average 3390.0) internal successors, (10170), 2 states have internal predecessors, (10170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:43:01,079 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 23:43:01,079 INFO  L93              Difference]: Finished difference Result 1467366 states and 1813810 transitions.
[2021-12-06 23:43:01,080 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 23:43:01,081 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3390.0) internal successors, (10170), 2 states have internal predecessors, (10170), 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 10170
[2021-12-06 23:43:01,081 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 23:43:02,293 INFO  L225             Difference]: With dead ends: 1467366
[2021-12-06 23:43:02,293 INFO  L226             Difference]: Without dead ends: 978244
[2021-12-06 23:43:02,477 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:43:02,478 INFO  L933         BasicCegarLoop]: 8089 mSDtfsCounter, 11321 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 30806 mSolverCounterSat, 11046 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11321 SdHoareTripleChecker+Valid, 8139 SdHoareTripleChecker+Invalid, 41852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11046 IncrementalHoareTripleChecker+Valid, 30806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time
[2021-12-06 23:43:02,478 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [11321 Valid, 8139 Invalid, 41852 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11046 Valid, 30806 Invalid, 0 Unknown, 0 Unchecked, 24.7s Time]
[2021-12-06 23:43:03,157 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 978244 states.
[2021-12-06 23:43:10,882 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 978244 to 978244.
[2021-12-06 23:43:11,335 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 978244 states, 978243 states have (on average 1.1810409070139014) internal successors, (1155345), 978243 states have internal predecessors, (1155345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:43:12,992 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 978244 states to 978244 states and 1155345 transitions.
[2021-12-06 23:43:12,992 INFO  L78                 Accepts]: Start accepts. Automaton has 978244 states and 1155345 transitions. Word has length 10170
[2021-12-06 23:43:12,993 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 23:43:12,993 INFO  L470      AbstractCegarLoop]: Abstraction has 978244 states and 1155345 transitions.
[2021-12-06 23:43:12,995 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3390.0) internal successors, (10170), 2 states have internal predecessors, (10170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:43:12,995 INFO  L276                IsEmpty]: Start isEmpty. Operand 978244 states and 1155345 transitions.
[2021-12-06 23:43:14,773 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10401
[2021-12-06 23:43:14,773 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 23:43:14,775 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 23:43:14,775 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-12-06 23:43:14,775 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 23:43:14,776 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 23:43:14,777 INFO  L85        PathProgramCache]: Analyzing trace with hash -849025811, now seen corresponding path program 1 times
[2021-12-06 23:43:14,777 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 23:43:14,777 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795033400]
[2021-12-06 23:43:14,778 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 23:43:14,778 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 23:43:15,554 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 23:43:30,656 INFO  L134       CoverageAnalysis]: Checked inductivity of 371 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked.
[2021-12-06 23:43:30,657 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 23:43:30,657 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795033400]
[2021-12-06 23:43:30,657 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795033400] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 23:43:30,657 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 23:43:30,658 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-06 23:43:30,658 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067977723]
[2021-12-06 23:43:30,658 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 23:43:30,662 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-06 23:43:30,662 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 23:43:30,663 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-06 23:43:30,663 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:43:30,665 INFO  L87              Difference]: Start difference. First operand 978244 states and 1155345 transitions. Second operand  has 3 states, 3 states have (on average 3436.0) internal successors, (10308), 2 states have internal predecessors, (10308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:44:01,035 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-06 23:44:01,035 INFO  L93              Difference]: Finished difference Result 2934726 states and 3466030 transitions.
[2021-12-06 23:44:01,036 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-06 23:44:01,037 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3436.0) internal successors, (10308), 2 states have internal predecessors, (10308), 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 10400
[2021-12-06 23:44:01,038 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-06 23:44:03,785 INFO  L225             Difference]: With dead ends: 2934726
[2021-12-06 23:44:03,785 INFO  L226             Difference]: Without dead ends: 1956484
[2021-12-06 23:44:04,435 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-06 23:44:04,436 INFO  L933         BasicCegarLoop]: 6562 mSDtfsCounter, 12226 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30711 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12226 SdHoareTripleChecker+Valid, 6611 SdHoareTripleChecker+Invalid, 41212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 30711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time
[2021-12-06 23:44:04,436 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12226 Valid, 6611 Invalid, 41212 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 30711 Invalid, 0 Unknown, 0 Unchecked, 23.6s Time]
[2021-12-06 23:44:05,721 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1956484 states.
[2021-12-06 23:44:21,332 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956484 to 1925914.
[2021-12-06 23:44:22,091 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1925914 states, 1925913 states have (on average 1.1400219013008375) internal successors, (2195583), 1925913 states have internal predecessors, (2195583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:44:25,256 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1925914 states to 1925914 states and 2195583 transitions.
[2021-12-06 23:44:25,256 INFO  L78                 Accepts]: Start accepts. Automaton has 1925914 states and 2195583 transitions. Word has length 10400
[2021-12-06 23:44:25,256 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-06 23:44:25,256 INFO  L470      AbstractCegarLoop]: Abstraction has 1925914 states and 2195583 transitions.
[2021-12-06 23:44:25,258 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3436.0) internal successors, (10308), 2 states have internal predecessors, (10308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-06 23:44:25,258 INFO  L276                IsEmpty]: Start isEmpty. Operand 1925914 states and 2195583 transitions.
[2021-12-06 23:44:28,061 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10557
[2021-12-06 23:44:28,061 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-06 23:44:28,063 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-06 23:44:28,063 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2021-12-06 23:44:28,063 INFO  L402      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-06 23:44:28,063 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-06 23:44:28,065 INFO  L85        PathProgramCache]: Analyzing trace with hash 1821387509, now seen corresponding path program 1 times
[2021-12-06 23:44:28,065 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-06 23:44:28,065 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796137708]
[2021-12-06 23:44:28,066 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-06 23:44:28,066 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-06 23:44:28,924 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-06 23:44:44,751 INFO  L134       CoverageAnalysis]: Checked inductivity of 632 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked.
[2021-12-06 23:44:44,751 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-06 23:44:44,751 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796137708]
[2021-12-06 23:44:44,751 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796137708] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-06 23:44:44,751 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-06 23:44:44,753 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-12-06 23:44:44,753 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804304457]
[2021-12-06 23:44:44,753 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-06 23:44:44,757 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-12-06 23:44:44,757 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-06 23:44:44,757 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-12-06 23:44:44,757 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2021-12-06 23:44:44,759 INFO  L87              Difference]: Start difference. First operand 1925914 states and 2195583 transitions. Second operand  has 6 states, 6 states have (on average 1734.6666666666667) internal successors, (10408), 5 states have internal predecessors, (10408), 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)