./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem08_label20.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 8393723b
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fd27d6-599f-4b95-a2d6-14fed7c92bba/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fd27d6-599f-4b95-a2d6-14fed7c92bba/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fd27d6-599f-4b95-a2d6-14fed7c92bba/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fd27d6-599f-4b95-a2d6-14fed7c92bba/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem08_label20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fd27d6-599f-4b95-a2d6-14fed7c92bba/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fd27d6-599f-4b95-a2d6-14fed7c92bba/bin/uautomizer-TMbwUNV5ro --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 e67d67dabb36785bf28f2b615b502173c2b404fb50b9c2e5a3f8ea84c72a458a
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-8393723
[2022-11-18 18:37:20,657 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-11-18 18:37:20,660 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-18 18:37:20,690 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-18 18:37:20,691 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-18 18:37:20,692 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-18 18:37:20,693 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-18 18:37:20,695 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-18 18:37:20,696 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-18 18:37:20,697 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-18 18:37:20,699 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-11-18 18:37:20,700 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-18 18:37:20,700 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-18 18:37:20,701 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-18 18:37:20,702 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-18 18:37:20,703 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-18 18:37:20,704 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-18 18:37:20,705 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-18 18:37:20,707 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-18 18:37:20,709 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-18 18:37:20,711 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-18 18:37:20,722 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-18 18:37:20,724 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-11-18 18:37:20,727 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-18 18:37:20,735 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-18 18:37:20,741 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-18 18:37:20,742 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-18 18:37:20,743 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-18 18:37:20,743 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-18 18:37:20,744 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-18 18:37:20,746 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-18 18:37:20,747 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-18 18:37:20,749 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-18 18:37:20,750 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-18 18:37:20,752 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-18 18:37:20,753 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-18 18:37:20,754 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-18 18:37:20,754 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-18 18:37:20,755 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-18 18:37:20,756 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-18 18:37:20,756 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-11-18 18:37:20,757 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fd27d6-599f-4b95-a2d6-14fed7c92bba/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-11-18 18:37:20,795 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-11-18 18:37:20,796 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-18 18:37:20,796 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-18 18:37:20,797 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-18 18:37:20,797 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-18 18:37:20,798 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-18 18:37:20,798 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-18 18:37:20,799 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-11-18 18:37:20,799 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-11-18 18:37:20,799 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-18 18:37:20,800 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-11-18 18:37:20,801 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-11-18 18:37:20,801 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-11-18 18:37:20,801 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-11-18 18:37:20,801 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-11-18 18:37:20,802 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-18 18:37:20,802 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-11-18 18:37:20,802 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-11-18 18:37:20,802 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-11-18 18:37:20,802 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-11-18 18:37:20,803 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-11-18 18:37:20,803 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-18 18:37:20,803 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-11-18 18:37:20,803 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-11-18 18:37:20,803 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-18 18:37:20,804 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-18 18:37:20,804 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-11-18 18:37:20,804 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-18 18:37:20,804 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-11-18 18:37:20,805 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-18 18:37:20,805 INFO  L138        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2022-11-18 18:37:20,805 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-18 18:37:20,806 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-18 18:37:20,806 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_66fd27d6-599f-4b95-a2d6-14fed7c92bba/bin/uautomizer-TMbwUNV5ro/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_66fd27d6-599f-4b95-a2d6-14fed7c92bba/bin/uautomizer-TMbwUNV5ro
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 -> e67d67dabb36785bf28f2b615b502173c2b404fb50b9c2e5a3f8ea84c72a458a
[2022-11-18 18:37:21,146 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-18 18:37:21,175 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-18 18:37:21,179 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-18 18:37:21,181 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-11-18 18:37:21,181 INFO  L275        PluginConnector]: CDTParser initialized
[2022-11-18 18:37:21,183 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fd27d6-599f-4b95-a2d6-14fed7c92bba/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/eca-rers2012/Problem08_label20.c
[2022-11-18 18:37:21,257 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fd27d6-599f-4b95-a2d6-14fed7c92bba/bin/uautomizer-TMbwUNV5ro/data/d037a1b5b/7779b76edb0c400d9065a7a80cf9c67b/FLAG5982630cf
[2022-11-18 18:37:25,031 INFO  L306              CDTParser]: Found 1 translation units.
[2022-11-18 18:37:25,032 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fd27d6-599f-4b95-a2d6-14fed7c92bba/sv-benchmarks/c/eca-rers2012/Problem08_label20.c
[2022-11-18 18:37:25,300 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fd27d6-599f-4b95-a2d6-14fed7c92bba/bin/uautomizer-TMbwUNV5ro/data/d037a1b5b/7779b76edb0c400d9065a7a80cf9c67b/FLAG5982630cf
[2022-11-18 18:37:25,627 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fd27d6-599f-4b95-a2d6-14fed7c92bba/bin/uautomizer-TMbwUNV5ro/data/d037a1b5b/7779b76edb0c400d9065a7a80cf9c67b
[2022-11-18 18:37:25,629 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-18 18:37:25,631 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-18 18:37:25,634 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-18 18:37:25,634 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-18 18:37:25,638 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-18 18:37:25,639 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:37:25" (1/1) ...
[2022-11-18 18:37:25,641 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a0e2784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:25, skipping insertion in model container
[2022-11-18 18:37:25,641 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:37:25" (1/1) ...
[2022-11-18 18:37:25,650 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-11-18 18:37:27,305 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-11-18 18:37:53,409 WARN  L234   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_66fd27d6-599f-4b95-a2d6-14fed7c92bba/sv-benchmarks/c/eca-rers2012/Problem08_label20.c[5711864,5711877]
[2022-11-18 18:37:53,519 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-18 18:37:53,529 INFO  L203         MainTranslator]: Completed pre-run
[2022-11-18 18:38:07,394 WARN  L234   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_66fd27d6-599f-4b95-a2d6-14fed7c92bba/sv-benchmarks/c/eca-rers2012/Problem08_label20.c[5711864,5711877]
[2022-11-18 18:38:07,403 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-18 18:38:12,574 INFO  L208         MainTranslator]: Completed translation
[2022-11-18 18:38:12,575 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:12 WrapperNode
[2022-11-18 18:38:12,575 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-18 18:38:12,576 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-18 18:38:12,577 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-18 18:38:12,577 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-18 18:38:12,587 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:12" (1/1) ...
[2022-11-18 18:38:14,503 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:12" (1/1) ...
[2022-11-18 18:38:19,479 INFO  L138                Inliner]: procedures = 95, calls = 89, calls flagged for inlining = 84, calls inlined = 84, statements flattened = 184288
[2022-11-18 18:38:19,479 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-18 18:38:19,481 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-18 18:38:19,481 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-18 18:38:19,481 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-11-18 18:38:19,491 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:12" (1/1) ...
[2022-11-18 18:38:19,491 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:12" (1/1) ...
[2022-11-18 18:38:20,521 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:12" (1/1) ...
[2022-11-18 18:38:20,522 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:12" (1/1) ...
[2022-11-18 18:38:23,081 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:12" (1/1) ...
[2022-11-18 18:38:23,532 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:12" (1/1) ...
[2022-11-18 18:38:23,873 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:12" (1/1) ...
[2022-11-18 18:38:24,021 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:12" (1/1) ...
[2022-11-18 18:38:25,697 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-18 18:38:25,698 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-18 18:38:25,700 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-11-18 18:38:25,700 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-11-18 18:38:25,701 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:12" (1/1) ...
[2022-11-18 18:38:25,710 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-18 18:38:25,730 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fd27d6-599f-4b95-a2d6-14fed7c92bba/bin/uautomizer-TMbwUNV5ro/z3
[2022-11-18 18:38:25,752 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fd27d6-599f-4b95-a2d6-14fed7c92bba/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-18 18:38:25,776 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66fd27d6-599f-4b95-a2d6-14fed7c92bba/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-18 18:38:25,803 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-18 18:38:25,803 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-18 18:38:25,803 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-18 18:38:25,803 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-18 18:38:26,028 INFO  L235             CfgBuilder]: Building ICFG
[2022-11-18 18:38:26,030 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-18 18:40:00,995 INFO  L276             CfgBuilder]: Performing block encoding
[2022-11-18 18:40:01,117 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-18 18:40:01,118 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-11-18 18:40:01,152 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:40:01 BoogieIcfgContainer
[2022-11-18 18:40:01,152 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-18 18:40:01,155 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-18 18:40:01,156 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-11-18 18:40:01,160 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-11-18 18:40:01,160 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:37:25" (1/3) ...
[2022-11-18 18:40:01,161 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3626bbfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:40:01, skipping insertion in model container
[2022-11-18 18:40:01,162 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:12" (2/3) ...
[2022-11-18 18:40:01,165 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3626bbfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:40:01, skipping insertion in model container
[2022-11-18 18:40:01,166 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:40:01" (3/3) ...
[2022-11-18 18:40:01,169 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem08_label20.c
[2022-11-18 18:40:01,194 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-18 18:40:01,195 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-18 18:40:01,636 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-18 18:40:01,651 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@312c14ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-18 18:40:01,652 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-11-18 18:40:01,748 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 23215 states, 23213 states have (on average 1.8828673588075646) internal successors, (43707), 23214 states have internal predecessors, (43707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-18 18:40:04,185 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17888
[2022-11-18 18:40:04,185 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-18 18:40:04,195 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2022-11-18 18:40:04,199 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-18 18:40:04,206 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-18 18:40:04,217 INFO  L85        PathProgramCache]: Analyzing trace with hash 1375290758, now seen corresponding path program 1 times
[2022-11-18 18:40:04,225 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-18 18:40:04,226 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400193073]
[2022-11-18 18:40:04,231 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-18 18:40:04,232 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-18 18:40:10,403 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat