./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label00.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_b6ecca4f-c590-4945-a8de-974456ff7187/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ecca4f-c590-4945-a8de-974456ff7187/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_b6ecca4f-c590-4945-a8de-974456ff7187/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ecca4f-c590-4945-a8de-974456ff7187/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label00.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ecca4f-c590-4945-a8de-974456ff7187/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_b6ecca4f-c590-4945-a8de-974456ff7187/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 52a645593204c6f476051b31440ec14a41c401d84d7e9192f917b4442a051dce
--- Real Ultimate output ---
This is Ultimate 0.2.2-hotfix-svcomp22-839c364
[2021-12-07 00:19:01,842 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-12-07 00:19:01,844 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-07 00:19:01,875 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-07 00:19:01,876 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-07 00:19:01,877 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-07 00:19:01,879 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-07 00:19:01,881 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-07 00:19:01,883 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-07 00:19:01,885 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-07 00:19:01,886 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-12-07 00:19:01,887 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-07 00:19:01,888 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-07 00:19:01,889 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-07 00:19:01,890 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-07 00:19:01,892 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-07 00:19:01,893 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-07 00:19:01,894 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-07 00:19:01,896 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-07 00:19:01,899 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-07 00:19:01,900 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-07 00:19:01,902 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-07 00:19:01,903 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-12-07 00:19:01,904 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-07 00:19:01,908 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-07 00:19:01,908 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-07 00:19:01,909 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-07 00:19:01,910 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-07 00:19:01,910 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-07 00:19:01,912 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-07 00:19:01,912 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-07 00:19:01,913 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-07 00:19:01,914 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-07 00:19:01,915 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-07 00:19:01,916 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-07 00:19:01,916 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-07 00:19:01,917 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-07 00:19:01,917 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-07 00:19:01,917 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-07 00:19:01,918 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-07 00:19:01,919 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-12-07 00:19:01,919 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ecca4f-c590-4945-a8de-974456ff7187/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-07 00:19:01,942 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-12-07 00:19:01,942 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-07 00:19:01,942 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-07 00:19:01,943 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-07 00:19:01,943 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-07 00:19:01,944 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-07 00:19:01,944 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-07 00:19:01,944 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-12-07 00:19:01,945 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-12-07 00:19:01,945 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-07 00:19:01,945 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-12-07 00:19:01,945 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-12-07 00:19:01,945 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-12-07 00:19:01,946 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-12-07 00:19:01,946 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-12-07 00:19:01,946 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-07 00:19:01,946 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-12-07 00:19:01,946 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-12-07 00:19:01,947 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-12-07 00:19:01,947 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-12-07 00:19:01,947 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-12-07 00:19:01,947 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-07 00:19:01,947 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-12-07 00:19:01,948 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-12-07 00:19:01,948 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-07 00:19:01,948 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-07 00:19:01,948 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-12-07 00:19:01,948 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-07 00:19:01,949 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-12-07 00:19:01,949 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-07 00:19:01,949 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-12-07 00:19:01,949 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-07 00:19:01,949 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-07 00:19:01,949 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-12-07 00:19:01,950 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_b6ecca4f-c590-4945-a8de-974456ff7187/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_b6ecca4f-c590-4945-a8de-974456ff7187/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 -> 52a645593204c6f476051b31440ec14a41c401d84d7e9192f917b4442a051dce
[2021-12-07 00:19:02,125 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-07 00:19:02,140 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-07 00:19:02,141 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-07 00:19:02,142 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-12-07 00:19:02,143 INFO  L275        PluginConnector]: CDTParser initialized
[2021-12-07 00:19:02,144 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ecca4f-c590-4945-a8de-974456ff7187/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-rers2012/Problem07_label00.c
[2021-12-07 00:19:02,186 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ecca4f-c590-4945-a8de-974456ff7187/bin/uautomizer-DrprNOufMa/data/445e10fc3/6e02469a2b5947f4a8b130fa4f80bdc4/FLAG07a625b75
[2021-12-07 00:19:03,612 INFO  L306              CDTParser]: Found 1 translation units.
[2021-12-07 00:19:03,612 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ecca4f-c590-4945-a8de-974456ff7187/sv-benchmarks/c/eca-rers2012/Problem07_label00.c
[2021-12-07 00:19:03,752 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ecca4f-c590-4945-a8de-974456ff7187/bin/uautomizer-DrprNOufMa/data/445e10fc3/6e02469a2b5947f4a8b130fa4f80bdc4/FLAG07a625b75
[2021-12-07 00:19:04,223 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ecca4f-c590-4945-a8de-974456ff7187/bin/uautomizer-DrprNOufMa/data/445e10fc3/6e02469a2b5947f4a8b130fa4f80bdc4
[2021-12-07 00:19:04,225 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-07 00:19:04,226 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-07 00:19:04,227 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-07 00:19:04,227 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-07 00:19:04,231 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-07 00:19:04,231 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:19:04" (1/1) ...
[2021-12-07 00:19:04,232 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ff32491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:04, skipping insertion in model container
[2021-12-07 00:19:04,232 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:19:04" (1/1) ...
[2021-12-07 00:19:04,238 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-12-07 00:19:04,894 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-12-07 00:19:14,878 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_b6ecca4f-c590-4945-a8de-974456ff7187/sv-benchmarks/c/eca-rers2012/Problem07_label00.c[2776317,2776330]
[2021-12-07 00:19:14,932 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-07 00:19:14,939 INFO  L203         MainTranslator]: Completed pre-run
[2021-12-07 00:19:20,901 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_b6ecca4f-c590-4945-a8de-974456ff7187/sv-benchmarks/c/eca-rers2012/Problem07_label00.c[2776317,2776330]
[2021-12-07 00:19:20,904 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-07 00:19:21,582 INFO  L208         MainTranslator]: Completed translation
[2021-12-07 00:19:21,582 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:21 WrapperNode
[2021-12-07 00:19:21,583 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-07 00:19:21,583 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-07 00:19:21,584 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-07 00:19:21,584 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-07 00:19:21,589 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:21" (1/1) ...
[2021-12-07 00:19:21,917 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:21" (1/1) ...
[2021-12-07 00:19:23,041 INFO  L137                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2021-12-07 00:19:23,041 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-07 00:19:23,042 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-07 00:19:23,042 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-07 00:19:23,042 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-12-07 00:19:23,049 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:21" (1/1) ...
[2021-12-07 00:19:23,050 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:21" (1/1) ...
[2021-12-07 00:19:23,280 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:21" (1/1) ...
[2021-12-07 00:19:23,280 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:21" (1/1) ...
[2021-12-07 00:19:23,854 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:21" (1/1) ...
[2021-12-07 00:19:23,962 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:21" (1/1) ...
[2021-12-07 00:19:24,074 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:21" (1/1) ...
[2021-12-07 00:19:24,353 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-07 00:19:24,354 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-07 00:19:24,354 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-12-07 00:19:24,354 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-12-07 00:19:24,355 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:21" (1/1) ...
[2021-12-07 00:19:24,362 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-07 00:19:24,371 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ecca4f-c590-4945-a8de-974456ff7187/bin/uautomizer-DrprNOufMa/z3
[2021-12-07 00:19:24,382 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ecca4f-c590-4945-a8de-974456ff7187/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-12-07 00:19:24,384 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ecca4f-c590-4945-a8de-974456ff7187/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-12-07 00:19:24,412 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-07 00:19:24,413 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-07 00:19:24,413 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-07 00:19:24,413 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-07 00:19:24,504 INFO  L236             CfgBuilder]: Building ICFG
[2021-12-07 00:19:24,505 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-07 00:19:47,928 INFO  L277             CfgBuilder]: Performing block encoding
[2021-12-07 00:19:47,973 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-07 00:19:47,973 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-07 00:19:47,982 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:19:47 BoogieIcfgContainer
[2021-12-07 00:19:47,982 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-07 00:19:47,984 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-07 00:19:47,984 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-12-07 00:19:47,986 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-12-07 00:19:47,986 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:19:04" (1/3) ...
[2021-12-07 00:19:47,987 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308d1520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:19:47, skipping insertion in model container
[2021-12-07 00:19:47,987 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:19:21" (2/3) ...
[2021-12-07 00:19:47,987 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308d1520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:19:47, skipping insertion in model container
[2021-12-07 00:19:47,987 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:19:47" (3/3) ...
[2021-12-07 00:19:47,988 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem07_label00.c
[2021-12-07 00:19:47,992 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-07 00:19:47,992 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-07 00:19:48,053 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-07 00:19:48,058 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
[2021-12-07 00:19:48,058 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-07 00:19:48,172 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)
[2021-12-07 00:19:48,756 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10143
[2021-12-07 00:19:48,757 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 00:19:48,762 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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[2021-12-07 00:19:48,765 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 00:19:48,769 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 00:19:48,774 INFO  L85        PathProgramCache]: Analyzing trace with hash 553116314, now seen corresponding path program 1 times
[2021-12-07 00:19:48,780 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 00:19:48,780 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064536784]
[2021-12-07 00:19:48,783 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:19:48,784 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 00:19:50,521 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:20:12,554 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-07 00:20:12,554 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 00:20:12,555 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064536784]
[2021-12-07 00:20:12,555 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064536784] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 00:20:12,555 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 00:20:12,557 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 00:20:12,558 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8555437]
[2021-12-07 00:20:12,558 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 00:20:12,571 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-07 00:20:12,571 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 00:20:12,591 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-07 00:20:12,591 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-12-07 00:20:12,614 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 4 states, 4 states have (on average 2535.5) internal successors, (10142), 3 states have internal predecessors, (10142), 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)
[2021-12-07 00:20:53,195 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 00:20:53,196 INFO  L93              Difference]: Finished difference Result 40898 states and 81470 transitions.
[2021-12-07 00:20:53,197 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-12-07 00:20:53,199 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2535.5) internal successors, (10142), 3 states have internal predecessors, (10142), 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 10142
[2021-12-07 00:20:53,216 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 00:20:53,348 INFO  L225             Difference]: With dead ends: 40898
[2021-12-07 00:20:53,349 INFO  L226             Difference]: Without dead ends: 30574
[2021-12-07 00:20:53,363 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-12-07 00:20:53,366 INFO  L933         BasicCegarLoop]: 5139 mSDtfsCounter, 22270 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 51972 mSolverCounterSat, 19081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22270 SdHoareTripleChecker+Valid, 5256 SdHoareTripleChecker+Invalid, 71053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19081 IncrementalHoareTripleChecker+Valid, 51972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.7s IncrementalHoareTripleChecker+Time
[2021-12-07 00:20:53,367 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [22270 Valid, 5256 Invalid, 71053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19081 Valid, 51972 Invalid, 0 Unknown, 0 Unchecked, 39.7s Time]
[2021-12-07 00:20:53,417 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30574 states.
[2021-12-07 00:20:53,888 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30574 to 30574.
[2021-12-07 00:20:53,931 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30574 states, 30573 states have (on average 1.496549242795931) internal successors, (45754), 30573 states have internal predecessors, (45754), 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)
[2021-12-07 00:20:53,990 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30574 states to 30574 states and 45754 transitions.
[2021-12-07 00:20:53,991 INFO  L78                 Accepts]: Start accepts. Automaton has 30574 states and 45754 transitions. Word has length 10142
[2021-12-07 00:20:54,019 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 00:20:54,019 INFO  L470      AbstractCegarLoop]: Abstraction has 30574 states and 45754 transitions.
[2021-12-07 00:20:54,021 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2535.5) internal successors, (10142), 3 states have internal predecessors, (10142), 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)
[2021-12-07 00:20:54,021 INFO  L276                IsEmpty]: Start isEmpty. Operand 30574 states and 45754 transitions.
[2021-12-07 00:20:54,972 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13042
[2021-12-07 00:20:54,972 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 00:20:54,982 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 00:20:54,982 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-07 00:20:54,982 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 00:20:54,983 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 00:20:54,986 INFO  L85        PathProgramCache]: Analyzing trace with hash 303106515, now seen corresponding path program 1 times
[2021-12-07 00:20:54,986 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 00:20:54,986 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414140212]
[2021-12-07 00:20:54,987 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:20:54,987 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 00:20:56,317 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:21:25,894 INFO  L134       CoverageAnalysis]: Checked inductivity of 2888 backedges. 2885 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-12-07 00:21:25,895 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 00:21:25,895 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414140212]
[2021-12-07 00:21:25,895 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414140212] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 00:21:25,895 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 00:21:25,897 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-07 00:21:25,897 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982088056]
[2021-12-07 00:21:25,897 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 00:21:25,914 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 00:21:25,914 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 00:21:25,914 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 00:21:25,914 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:21:25,918 INFO  L87              Difference]: Start difference. First operand 30574 states and 45754 transitions. Second operand  has 3 states, 3 states have (on average 4346.333333333333) internal successors, (13039), 2 states have internal predecessors, (13039), 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)
[2021-12-07 00:21:49,382 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 00:21:49,383 INFO  L93              Difference]: Finished difference Result 71336 states and 116865 transitions.
[2021-12-07 00:21:49,383 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 00:21:49,385 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4346.333333333333) internal successors, (13039), 2 states have internal predecessors, (13039), 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 13041
[2021-12-07 00:21:49,387 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 00:21:49,440 INFO  L225             Difference]: With dead ends: 71336
[2021-12-07 00:21:49,440 INFO  L226             Difference]: Without dead ends: 50954
[2021-12-07 00:21:49,457 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
[2021-12-07 00:21:49,458 INFO  L933         BasicCegarLoop]: 4817 mSDtfsCounter, 10972 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28700 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10972 SdHoareTripleChecker+Valid, 4866 SdHoareTripleChecker+Invalid, 40458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time
[2021-12-07 00:21:49,459 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10972 Valid, 4866 Invalid, 40458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28700 Invalid, 0 Unknown, 0 Unchecked, 23.0s Time]
[2021-12-07 00:21:49,499 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50954 states.
[2021-12-07 00:21:50,125 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50954 to 50954.
[2021-12-07 00:21:50,163 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 50954 states, 50953 states have (on average 1.4546935411065098) internal successors, (74121), 50953 states have internal predecessors, (74121), 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)
[2021-12-07 00:21:50,220 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50954 states to 50954 states and 74121 transitions.
[2021-12-07 00:21:50,220 INFO  L78                 Accepts]: Start accepts. Automaton has 50954 states and 74121 transitions. Word has length 13041
[2021-12-07 00:21:50,224 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 00:21:50,224 INFO  L470      AbstractCegarLoop]: Abstraction has 50954 states and 74121 transitions.
[2021-12-07 00:21:50,226 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4346.333333333333) internal successors, (13039), 2 states have internal predecessors, (13039), 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)
[2021-12-07 00:21:50,226 INFO  L276                IsEmpty]: Start isEmpty. Operand 50954 states and 74121 transitions.
[2021-12-07 00:21:51,165 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13043
[2021-12-07 00:21:51,165 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 00:21:51,172 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-07 00:21:51,172 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-07 00:21:51,172 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 00:21:51,172 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 00:21:51,175 INFO  L85        PathProgramCache]: Analyzing trace with hash 2107309425, now seen corresponding path program 1 times
[2021-12-07 00:21:51,175 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 00:21:51,176 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292332838]
[2021-12-07 00:21:51,177 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:21:51,177 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 00:21:52,531 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:22:19,099 INFO  L134       CoverageAnalysis]: Checked inductivity of 2890 backedges. 2890 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-07 00:22:19,099 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 00:22:19,100 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292332838]
[2021-12-07 00:22:19,100 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292332838] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 00:22:19,100 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 00:22:19,102 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 00:22:19,102 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306825869]
[2021-12-07 00:22:19,102 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 00:22:19,110 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 00:22:19,110 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 00:22:19,111 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 00:22:19,111 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:22:19,114 INFO  L87              Difference]: Start difference. First operand 50954 states and 74121 transitions. Second operand  has 3 states, 3 states have (on average 4347.333333333333) internal successors, (13042), 3 states have internal predecessors, (13042), 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)
[2021-12-07 00:22:41,820 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 00:22:41,820 INFO  L93              Difference]: Finished difference Result 112096 states and 166188 transitions.
[2021-12-07 00:22:41,820 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 00:22:41,822 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4347.333333333333) internal successors, (13042), 3 states have internal predecessors, (13042), 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 13042
[2021-12-07 00:22:41,823 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 00:22:41,999 INFO  L225             Difference]: With dead ends: 112096
[2021-12-07 00:22:41,999 INFO  L226             Difference]: Without dead ends: 71334
[2021-12-07 00:22:42,018 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:22:42,019 INFO  L933         BasicCegarLoop]: 18209 mSDtfsCounter, 10210 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 33598 mSolverCounterSat, 3753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10210 SdHoareTripleChecker+Valid, 18260 SdHoareTripleChecker+Invalid, 37351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3753 IncrementalHoareTripleChecker+Valid, 33598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time
[2021-12-07 00:22:42,020 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10210 Valid, 18260 Invalid, 37351 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3753 Valid, 33598 Invalid, 0 Unknown, 0 Unchecked, 22.2s Time]
[2021-12-07 00:22:42,060 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 71334 states.
[2021-12-07 00:22:42,546 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 71334 to 71334.
[2021-12-07 00:22:42,597 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 71334 states, 71333 states have (on average 1.4101607951439026) internal successors, (100591), 71333 states have internal predecessors, (100591), 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)
[2021-12-07 00:22:42,673 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 71334 states to 71334 states and 100591 transitions.
[2021-12-07 00:22:42,674 INFO  L78                 Accepts]: Start accepts. Automaton has 71334 states and 100591 transitions. Word has length 13042
[2021-12-07 00:22:42,677 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 00:22:42,678 INFO  L470      AbstractCegarLoop]: Abstraction has 71334 states and 100591 transitions.
[2021-12-07 00:22:42,679 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4347.333333333333) internal successors, (13042), 3 states have internal predecessors, (13042), 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)
[2021-12-07 00:22:42,679 INFO  L276                IsEmpty]: Start isEmpty. Operand 71334 states and 100591 transitions.
[2021-12-07 00:22:43,738 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13049
[2021-12-07 00:22:43,738 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 00:22:43,744 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-07 00:22:43,745 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-12-07 00:22:43,745 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 00:22:43,745 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 00:22:43,748 INFO  L85        PathProgramCache]: Analyzing trace with hash 579600034, now seen corresponding path program 1 times
[2021-12-07 00:22:43,748 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 00:22:43,748 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207797515]
[2021-12-07 00:22:43,749 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:22:43,749 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 00:22:44,993 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:23:10,009 INFO  L134       CoverageAnalysis]: Checked inductivity of 2902 backedges. 2892 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2021-12-07 00:23:10,009 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 00:23:10,009 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207797515]
[2021-12-07 00:23:10,009 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207797515] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 00:23:10,009 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 00:23:10,011 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-07 00:23:10,011 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848358913]
[2021-12-07 00:23:10,011 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 00:23:10,021 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 00:23:10,021 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 00:23:10,021 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 00:23:10,021 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:23:10,024 INFO  L87              Difference]: Start difference. First operand 71334 states and 100591 transitions. Second operand  has 3 states, 3 states have (on average 4346.333333333333) internal successors, (13039), 2 states have internal predecessors, (13039), 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)
[2021-12-07 00:23:35,158 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 00:23:35,159 INFO  L93              Difference]: Finished difference Result 193616 states and 281376 transitions.
[2021-12-07 00:23:35,159 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 00:23:35,161 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4346.333333333333) internal successors, (13039), 2 states have internal predecessors, (13039), 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 13048
[2021-12-07 00:23:35,162 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 00:23:35,286 INFO  L225             Difference]: With dead ends: 193616
[2021-12-07 00:23:35,286 INFO  L226             Difference]: Without dead ends: 132474
[2021-12-07 00:23:35,322 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
[2021-12-07 00:23:35,323 INFO  L933         BasicCegarLoop]: 6718 mSDtfsCounter, 10129 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27706 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10129 SdHoareTripleChecker+Valid, 6767 SdHoareTripleChecker+Invalid, 40736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time
[2021-12-07 00:23:35,324 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10129 Valid, 6767 Invalid, 40736 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27706 Invalid, 0 Unknown, 0 Unchecked, 24.4s Time]
[2021-12-07 00:23:35,454 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 132474 states.
[2021-12-07 00:23:36,503 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 132474 to 132474.
[2021-12-07 00:23:36,577 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 132474 states, 132473 states have (on average 1.319838759596295) internal successors, (174843), 132473 states have internal predecessors, (174843), 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)
[2021-12-07 00:23:36,728 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 132474 states to 132474 states and 174843 transitions.
[2021-12-07 00:23:36,728 INFO  L78                 Accepts]: Start accepts. Automaton has 132474 states and 174843 transitions. Word has length 13048
[2021-12-07 00:23:36,731 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 00:23:36,731 INFO  L470      AbstractCegarLoop]: Abstraction has 132474 states and 174843 transitions.
[2021-12-07 00:23:36,733 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4346.333333333333) internal successors, (13039), 2 states have internal predecessors, (13039), 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)
[2021-12-07 00:23:36,733 INFO  L276                IsEmpty]: Start isEmpty. Operand 132474 states and 174843 transitions.
[2021-12-07 00:23:37,923 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13059
[2021-12-07 00:23:37,923 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 00:23:37,930 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 00:23:37,930 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-12-07 00:23:37,930 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 00:23:37,931 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 00:23:37,934 INFO  L85        PathProgramCache]: Analyzing trace with hash 266468169, now seen corresponding path program 1 times
[2021-12-07 00:23:37,934 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 00:23:37,934 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99778910]
[2021-12-07 00:23:37,935 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:23:37,935 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 00:23:39,203 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:24:04,179 INFO  L134       CoverageAnalysis]: Checked inductivity of 2922 backedges. 2922 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-07 00:24:04,179 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 00:24:04,179 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99778910]
[2021-12-07 00:24:04,179 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99778910] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 00:24:04,179 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 00:24:04,181 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 00:24:04,181 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442972459]
[2021-12-07 00:24:04,181 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 00:24:04,190 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-07 00:24:04,190 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 00:24:04,190 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-07 00:24:04,191 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-07 00:24:04,193 INFO  L87              Difference]: Start difference. First operand 132474 states and 174843 transitions. Second operand  has 4 states, 4 states have (on average 3264.5) internal successors, (13058), 3 states have internal predecessors, (13058), 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)
[2021-12-07 00:24:42,218 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 00:24:42,218 INFO  L93              Difference]: Finished difference Result 458556 states and 616640 transitions.
[2021-12-07 00:24:42,219 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-12-07 00:24:42,220 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3264.5) internal successors, (13058), 3 states have internal predecessors, (13058), 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 13058
[2021-12-07 00:24:42,222 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 00:24:42,653 INFO  L225             Difference]: With dead ends: 458556
[2021-12-07 00:24:42,654 INFO  L226             Difference]: Without dead ends: 336274
[2021-12-07 00:24:42,703 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-07 00:24:42,705 INFO  L933         BasicCegarLoop]: 5415 mSDtfsCounter, 26549 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 40999 mSolverCounterSat, 28388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26549 SdHoareTripleChecker+Valid, 5513 SdHoareTripleChecker+Invalid, 69387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28388 IncrementalHoareTripleChecker+Valid, 40999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.5s IncrementalHoareTripleChecker+Time
[2021-12-07 00:24:42,705 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [26549 Valid, 5513 Invalid, 69387 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28388 Valid, 40999 Invalid, 0 Unknown, 0 Unchecked, 36.5s Time]
[2021-12-07 00:24:42,879 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 336274 states.
[2021-12-07 00:24:45,660 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 336274 to 336274.
[2021-12-07 00:24:45,796 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 336274 states, 336273 states have (on average 1.2261376916969249) internal successors, (412317), 336273 states have internal predecessors, (412317), 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)
[2021-12-07 00:24:46,144 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 336274 states to 336274 states and 412317 transitions.
[2021-12-07 00:24:46,145 INFO  L78                 Accepts]: Start accepts. Automaton has 336274 states and 412317 transitions. Word has length 13058
[2021-12-07 00:24:46,146 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 00:24:46,146 INFO  L470      AbstractCegarLoop]: Abstraction has 336274 states and 412317 transitions.
[2021-12-07 00:24:46,148 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3264.5) internal successors, (13058), 3 states have internal predecessors, (13058), 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)
[2021-12-07 00:24:46,148 INFO  L276                IsEmpty]: Start isEmpty. Operand 336274 states and 412317 transitions.
[2021-12-07 00:24:47,578 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13142
[2021-12-07 00:24:47,579 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 00:24:47,581 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-07 00:24:47,581 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-12-07 00:24:47,582 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 00:24:47,582 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 00:24:47,583 INFO  L85        PathProgramCache]: Analyzing trace with hash -1992534389, now seen corresponding path program 1 times
[2021-12-07 00:24:47,584 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 00:24:47,584 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461892281]
[2021-12-07 00:24:47,585 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:24:47,585 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 00:24:48,850 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:25:14,047 INFO  L134       CoverageAnalysis]: Checked inductivity of 3091 backedges. 3087 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-12-07 00:25:14,047 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 00:25:14,047 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461892281]
[2021-12-07 00:25:14,047 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461892281] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 00:25:14,047 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 00:25:14,049 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 00:25:14,049 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530859132]
[2021-12-07 00:25:14,049 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 00:25:14,054 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-07 00:25:14,055 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 00:25:14,055 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-07 00:25:14,055 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-07 00:25:14,058 INFO  L87              Difference]: Start difference. First operand 336274 states and 412317 transitions. Second operand  has 4 states, 4 states have (on average 3284.5) internal successors, (13138), 3 states have internal predecessors, (13138), 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)
[2021-12-07 00:25:54,519 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 00:25:54,519 INFO  L93              Difference]: Finished difference Result 1069956 states and 1329062 transitions.
[2021-12-07 00:25:54,520 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-12-07 00:25:54,521 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3284.5) internal successors, (13138), 3 states have internal predecessors, (13138), 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 13141
[2021-12-07 00:25:54,523 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 00:25:55,327 INFO  L225             Difference]: With dead ends: 1069956
[2021-12-07 00:25:55,327 INFO  L226             Difference]: Without dead ends: 743874
[2021-12-07 00:25:55,481 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-07 00:25:55,482 INFO  L933         BasicCegarLoop]: 7954 mSDtfsCounter, 17479 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 58153 mSolverCounterSat, 18125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17479 SdHoareTripleChecker+Valid, 8077 SdHoareTripleChecker+Invalid, 76278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18125 IncrementalHoareTripleChecker+Valid, 58153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.7s IncrementalHoareTripleChecker+Time
[2021-12-07 00:25:55,482 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [17479 Valid, 8077 Invalid, 76278 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18125 Valid, 58153 Invalid, 0 Unknown, 0 Unchecked, 37.7s Time]
[2021-12-07 00:25:56,075 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 743874 states.
[2021-12-07 00:26:02,369 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 743874 to 743874.
[2021-12-07 00:26:02,629 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 743874 states, 743873 states have (on average 1.1708732539022118) internal successors, (870981), 743873 states have internal predecessors, (870981), 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)
[2021-12-07 00:26:03,633 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 743874 states to 743874 states and 870981 transitions.
[2021-12-07 00:26:03,633 INFO  L78                 Accepts]: Start accepts. Automaton has 743874 states and 870981 transitions. Word has length 13141
[2021-12-07 00:26:03,635 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 00:26:03,635 INFO  L470      AbstractCegarLoop]: Abstraction has 743874 states and 870981 transitions.
[2021-12-07 00:26:03,637 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3284.5) internal successors, (13138), 3 states have internal predecessors, (13138), 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)
[2021-12-07 00:26:03,637 INFO  L276                IsEmpty]: Start isEmpty. Operand 743874 states and 870981 transitions.
[2021-12-07 00:26:05,679 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13225
[2021-12-07 00:26:05,679 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 00:26:05,683 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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[2021-12-07 00:26:05,683 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-12-07 00:26:05,683 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 00:26:05,683 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 00:26:05,685 INFO  L85        PathProgramCache]: Analyzing trace with hash -715651350, now seen corresponding path program 1 times
[2021-12-07 00:26:05,685 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 00:26:05,685 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210713021]
[2021-12-07 00:26:05,686 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:26:05,687 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 00:26:07,024 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:26:32,141 INFO  L134       CoverageAnalysis]: Checked inductivity of 3254 backedges. 3068 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked.
[2021-12-07 00:26:32,142 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 00:26:32,142 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210713021]
[2021-12-07 00:26:32,142 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210713021] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 00:26:32,142 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 00:26:32,144 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-07 00:26:32,144 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904058705]
[2021-12-07 00:26:32,144 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 00:26:32,149 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 00:26:32,149 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 00:26:32,149 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 00:26:32,149 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 00:26:32,152 INFO  L87              Difference]: Start difference. First operand 743874 states and 870981 transitions. Second operand  has 3 states, 3 states have (on average 4346.333333333333) internal successors, (13039), 2 states have internal predecessors, (13039), 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)
[2021-12-07 00:27:01,107 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 00:27:01,107 INFO  L93              Difference]: Finished difference Result 2211236 states and 2592546 transitions.
[2021-12-07 00:27:01,108 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 00:27:01,109 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4346.333333333333) internal successors, (13039), 2 states have internal predecessors, (13039), 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 13224
[2021-12-07 00:27:01,111 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 00:27:02,861 INFO  L225             Difference]: With dead ends: 2211236
[2021-12-07 00:27:02,861 INFO  L226             Difference]: Without dead ends: 1477554
[2021-12-07 00:27:03,121 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
[2021-12-07 00:27:03,122 INFO  L933         BasicCegarLoop]: 6208 mSDtfsCounter, 9694 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30541 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9694 SdHoareTripleChecker+Valid, 6257 SdHoareTripleChecker+Invalid, 41042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 30541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time
[2021-12-07 00:27:03,123 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [9694 Valid, 6257 Invalid, 41042 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 30541 Invalid, 0 Unknown, 0 Unchecked, 24.0s Time]
[2021-12-07 00:27:04,315 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1477554 states.
[2021-12-07 00:27:16,952 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477554 to 1477554.
[2021-12-07 00:27:17,477 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1477554 states, 1477553 states have (on average 1.131164161285585) internal successors, (1671355), 1477553 states have internal predecessors, (1671355), 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)
[2021-12-07 00:27:19,640 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1477554 states to 1477554 states and 1671355 transitions.
[2021-12-07 00:27:19,640 INFO  L78                 Accepts]: Start accepts. Automaton has 1477554 states and 1671355 transitions. Word has length 13224
[2021-12-07 00:27:19,642 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 00:27:19,642 INFO  L470      AbstractCegarLoop]: Abstraction has 1477554 states and 1671355 transitions.
[2021-12-07 00:27:19,644 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4346.333333333333) internal successors, (13039), 2 states have internal predecessors, (13039), 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)
[2021-12-07 00:27:19,644 INFO  L276                IsEmpty]: Start isEmpty. Operand 1477554 states and 1671355 transitions.
[2021-12-07 00:27:22,538 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13452
[2021-12-07 00:27:22,538 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 00:27:22,541 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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[2021-12-07 00:27:22,541 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-12-07 00:27:22,541 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 00:27:22,541 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 00:27:22,543 INFO  L85        PathProgramCache]: Analyzing trace with hash 1749579875, now seen corresponding path program 1 times
[2021-12-07 00:27:22,543 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 00:27:22,543 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838920117]
[2021-12-07 00:27:22,544 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:27:22,544 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 00:27:23,918 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:27:50,639 INFO  L134       CoverageAnalysis]: Checked inductivity of 3834 backedges. 3705 proven. 1 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked.
[2021-12-07 00:27:50,639 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 00:27:50,639 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838920117]
[2021-12-07 00:27:50,640 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838920117] provided 0 perfect and 1 imperfect interpolant sequences
[2021-12-07 00:27:50,640 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546227305]
[2021-12-07 00:27:50,641 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 00:27:50,642 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-07 00:27:50,642 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ecca4f-c590-4945-a8de-974456ff7187/bin/uautomizer-DrprNOufMa/z3
[2021-12-07 00:27:50,643 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ecca4f-c590-4945-a8de-974456ff7187/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-12-07 00:27:50,643 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ecca4f-c590-4945-a8de-974456ff7187/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-12-07 00:27:54,019 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 00:27:54,062 INFO  L263         TraceCheckSpWp]: Trace formula consists of 13944 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-12-07 00:27:54,266 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-12-07 00:28:04,372 INFO  L134       CoverageAnalysis]: Checked inductivity of 3834 backedges. 3422 proven. 0 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked.
[2021-12-07 00:28:04,372 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-12-07 00:28:04,372 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [546227305] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 00:28:04,372 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-12-07 00:28:04,378 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [18] total 19
[2021-12-07 00:28:04,378 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136501489]
[2021-12-07 00:28:04,378 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 00:28:04,386 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 00:28:04,386 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 00:28:04,386 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 00:28:04,386 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380
[2021-12-07 00:28:04,389 INFO  L87              Difference]: Start difference. First operand 1477554 states and 1671355 transitions. Second operand  has 3 states, 3 states have (on average 4347.0) internal successors, (13041), 2 states have internal predecessors, (13041), 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)