./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_fib_longer-1.i --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version e04fb08f
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c9047bb-49bf-4eb5-a1a9-91bcc578d06e/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c9047bb-49bf-4eb5-a1a9-91bcc578d06e/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c9047bb-49bf-4eb5-a1a9-91bcc578d06e/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c9047bb-49bf-4eb5-a1a9-91bcc578d06e/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_fib_longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c9047bb-49bf-4eb5-a1a9-91bcc578d06e/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c9047bb-49bf-4eb5-a1a9-91bcc578d06e/bin/uautomizer-tPACEb0tL8 --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 f6c9b52ffa673147438276e1d7b786b060eda002f60ced6e1594740d0a0004b3
--- 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-e04fb08
[2022-11-16 11:01:45,589 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-11-16 11:01:45,591 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-16 11:01:45,612 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-16 11:01:45,612 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-16 11:01:45,613 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-16 11:01:45,615 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-16 11:01:45,616 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-16 11:01:45,618 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-16 11:01:45,619 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-16 11:01:45,620 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-11-16 11:01:45,621 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-16 11:01:45,622 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-16 11:01:45,623 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-16 11:01:45,624 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-16 11:01:45,625 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-16 11:01:45,626 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-16 11:01:45,627 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-16 11:01:45,629 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-16 11:01:45,631 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-16 11:01:45,632 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-16 11:01:45,634 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-16 11:01:45,635 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-11-16 11:01:45,636 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-16 11:01:45,640 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-16 11:01:45,640 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-16 11:01:45,641 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-16 11:01:45,642 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-16 11:01:45,642 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-16 11:01:45,643 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-16 11:01:45,644 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-16 11:01:45,645 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-16 11:01:45,645 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-16 11:01:45,646 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-16 11:01:45,647 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-16 11:01:45,648 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-16 11:01:45,648 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-16 11:01:45,649 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-16 11:01:45,649 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-16 11:01:45,650 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-16 11:01:45,651 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-11-16 11:01:45,652 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c9047bb-49bf-4eb5-a1a9-91bcc578d06e/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-11-16 11:01:45,674 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-11-16 11:01:45,675 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-16 11:01:45,675 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-16 11:01:45,675 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-16 11:01:45,676 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-16 11:01:45,676 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-16 11:01:45,677 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-16 11:01:45,677 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-11-16 11:01:45,678 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-11-16 11:01:45,678 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-16 11:01:45,678 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-11-16 11:01:45,679 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-11-16 11:01:45,679 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-11-16 11:01:45,679 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-11-16 11:01:45,679 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-11-16 11:01:45,680 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-16 11:01:45,680 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-11-16 11:01:45,680 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-11-16 11:01:45,680 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-11-16 11:01:45,681 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-11-16 11:01:45,681 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-11-16 11:01:45,681 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-16 11:01:45,681 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-11-16 11:01:45,682 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-11-16 11:01:45,682 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-16 11:01:45,682 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-16 11:01:45,682 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-11-16 11:01:45,682 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-16 11:01:45,685 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-11-16 11:01:45,685 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-16 11:01:45,685 INFO  L138        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2022-11-16 11:01:45,686 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-16 11:01:45,686 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-16 11:01:45,686 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_6c9047bb-49bf-4eb5-a1a9-91bcc578d06e/bin/uautomizer-tPACEb0tL8/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_6c9047bb-49bf-4eb5-a1a9-91bcc578d06e/bin/uautomizer-tPACEb0tL8
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 -> f6c9b52ffa673147438276e1d7b786b060eda002f60ced6e1594740d0a0004b3
[2022-11-16 11:01:46,002 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-16 11:01:46,028 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-16 11:01:46,031 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-16 11:01:46,033 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-11-16 11:01:46,034 INFO  L275        PluginConnector]: CDTParser initialized
[2022-11-16 11:01:46,035 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c9047bb-49bf-4eb5-a1a9-91bcc578d06e/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/seq-pthread/cs_fib_longer-1.i
[2022-11-16 11:01:46,122 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c9047bb-49bf-4eb5-a1a9-91bcc578d06e/bin/uautomizer-tPACEb0tL8/data/cdec2789e/79013225c3ff4c048b03e90d550c0ba1/FLAGd005a5487
[2022-11-16 11:01:46,750 INFO  L306              CDTParser]: Found 1 translation units.
[2022-11-16 11:01:46,750 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c9047bb-49bf-4eb5-a1a9-91bcc578d06e/sv-benchmarks/c/seq-pthread/cs_fib_longer-1.i
[2022-11-16 11:01:46,767 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c9047bb-49bf-4eb5-a1a9-91bcc578d06e/bin/uautomizer-tPACEb0tL8/data/cdec2789e/79013225c3ff4c048b03e90d550c0ba1/FLAGd005a5487
[2022-11-16 11:01:47,029 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c9047bb-49bf-4eb5-a1a9-91bcc578d06e/bin/uautomizer-tPACEb0tL8/data/cdec2789e/79013225c3ff4c048b03e90d550c0ba1
[2022-11-16 11:01:47,032 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-16 11:01:47,033 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-16 11:01:47,035 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-16 11:01:47,035 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-16 11:01:47,041 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-16 11:01:47,042 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:01:47" (1/1) ...
[2022-11-16 11:01:47,043 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c519936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:01:47, skipping insertion in model container
[2022-11-16 11:01:47,043 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:01:47" (1/1) ...
[2022-11-16 11:01:47,052 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-11-16 11:01:47,095 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-11-16 11:01:47,433 WARN  L229   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_6c9047bb-49bf-4eb5-a1a9-91bcc578d06e/sv-benchmarks/c/seq-pthread/cs_fib_longer-1.i[23609,23622]
[2022-11-16 11:01:47,548 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-16 11:01:47,562 INFO  L203         MainTranslator]: Completed pre-run
[2022-11-16 11:01:47,600 WARN  L229   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_6c9047bb-49bf-4eb5-a1a9-91bcc578d06e/sv-benchmarks/c/seq-pthread/cs_fib_longer-1.i[23609,23622]
[2022-11-16 11:01:47,719 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-16 11:01:47,759 INFO  L208         MainTranslator]: Completed translation
[2022-11-16 11:01:47,759 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:01:47 WrapperNode
[2022-11-16 11:01:47,760 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-16 11:01:47,761 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-16 11:01:47,761 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-16 11:01:47,761 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-16 11:01:47,769 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:01:47" (1/1) ...
[2022-11-16 11:01:47,811 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:01:47" (1/1) ...
[2022-11-16 11:01:47,874 INFO  L138                Inliner]: procedures = 144, calls = 395, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 738
[2022-11-16 11:01:47,879 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-16 11:01:47,880 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-16 11:01:47,880 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-16 11:01:47,880 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-11-16 11:01:47,890 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:01:47" (1/1) ...
[2022-11-16 11:01:47,891 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:01:47" (1/1) ...
[2022-11-16 11:01:47,899 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:01:47" (1/1) ...
[2022-11-16 11:01:47,900 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:01:47" (1/1) ...
[2022-11-16 11:01:47,932 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:01:47" (1/1) ...
[2022-11-16 11:01:47,938 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:01:47" (1/1) ...
[2022-11-16 11:01:47,942 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:01:47" (1/1) ...
[2022-11-16 11:01:47,945 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:01:47" (1/1) ...
[2022-11-16 11:01:47,951 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-16 11:01:47,952 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-16 11:01:47,952 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-11-16 11:01:47,952 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-11-16 11:01:47,954 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:01:47" (1/1) ...
[2022-11-16 11:01:47,975 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-16 11:01:47,989 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c9047bb-49bf-4eb5-a1a9-91bcc578d06e/bin/uautomizer-tPACEb0tL8/z3
[2022-11-16 11:01:47,999 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c9047bb-49bf-4eb5-a1a9-91bcc578d06e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-16 11:01:48,002 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c9047bb-49bf-4eb5-a1a9-91bcc578d06e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-16 11:01:48,054 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2022-11-16 11:01:48,055 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2022-11-16 11:01:48,055 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-11-16 11:01:48,055 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-11-16 11:01:48,055 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-16 11:01:48,055 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-11-16 11:01:48,055 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2022-11-16 11:01:48,056 INFO  L130     BoogieDeclarations]: Found specification of procedure __CS_pthread_create
[2022-11-16 11:01:48,056 INFO  L138     BoogieDeclarations]: Found implementation of procedure __CS_pthread_create
[2022-11-16 11:01:48,056 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2022-11-16 11:01:48,057 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$
[2022-11-16 11:01:48,057 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$
[2022-11-16 11:01:48,057 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-11-16 11:01:48,057 INFO  L130     BoogieDeclarations]: Found specification of procedure __CS_cs
[2022-11-16 11:01:48,058 INFO  L138     BoogieDeclarations]: Found implementation of procedure __CS_cs
[2022-11-16 11:01:48,058 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-16 11:01:48,058 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-16 11:01:48,058 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-16 11:01:48,254 INFO  L235             CfgBuilder]: Building ICFG
[2022-11-16 11:01:48,256 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-16 11:01:48,594 INFO  L769   $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset;
[2022-11-16 11:01:48,594 INFO  L769   $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !(0 != ~__CS_ret~0 % 256);
[2022-11-16 11:01:48,595 INFO  L769   $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset;
[2022-11-16 11:01:48,595 INFO  L769   $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !(0 != ~__CS_ret~0 % 256);
[2022-11-16 11:01:48,595 INFO  L769   $ProcedureCfgBuilder]: dead code at ProgramPoint L734: SUMMARY for call __CS_cs(); srcloc: null
[2022-11-16 11:01:48,595 INFO  L769   $ProcedureCfgBuilder]: dead code at ProgramPoint L734-1: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset;
[2022-11-16 11:01:48,595 INFO  L769   $ProcedureCfgBuilder]: dead code at ProgramPoint L734-1: assume !(0 != ~__CS_ret~0 % 256);
[2022-11-16 11:01:52,361 INFO  L276             CfgBuilder]: Performing block encoding
[2022-11-16 11:01:52,382 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-16 11:01:52,382 INFO  L300             CfgBuilder]: Removed 4 assume(true) statements.
[2022-11-16 11:01:52,385 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:01:52 BoogieIcfgContainer
[2022-11-16 11:01:52,385 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-16 11:01:52,388 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-16 11:01:52,389 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-11-16 11:01:52,392 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-11-16 11:01:52,392 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:01:47" (1/3) ...
[2022-11-16 11:01:52,393 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498cdaac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:01:52, skipping insertion in model container
[2022-11-16 11:01:52,394 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:01:47" (2/3) ...
[2022-11-16 11:01:52,395 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498cdaac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:01:52, skipping insertion in model container
[2022-11-16 11:01:52,395 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:01:52" (3/3) ...
[2022-11-16 11:01:52,396 INFO  L112   eAbstractionObserver]: Analyzing ICFG cs_fib_longer-1.i
[2022-11-16 11:01:52,418 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-16 11:01:52,418 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-16 11:01:52,506 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-16 11:01:52,513 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;@41a37f01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-16 11:01:52,514 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-11-16 11:01:52,520 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 186 states, 113 states have (on average 1.3274336283185841) internal successors, (150), 114 states have internal predecessors, (150), 67 states have call successors, (67), 4 states have call predecessors, (67), 4 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67)
[2022-11-16 11:01:52,546 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 301
[2022-11-16 11:01:52,546 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:01:52,547 INFO  L195           NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 11:01:52,548 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:01:52,553 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:01:52,553 INFO  L85        PathProgramCache]: Analyzing trace with hash -649068625, now seen corresponding path program 1 times
[2022-11-16 11:01:52,563 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:01:52,563 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709878023]
[2022-11-16 11:01:52,564 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:01:52,564 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms