./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem08_label52.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 38b53e6a
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_a841f4e5-1a97-4500-93db-5706009aa5fb/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a841f4e5-1a97-4500-93db-5706009aa5fb/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a841f4e5-1a97-4500-93db-5706009aa5fb/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a841f4e5-1a97-4500-93db-5706009aa5fb/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem08_label52.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a841f4e5-1a97-4500-93db-5706009aa5fb/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a841f4e5-1a97-4500-93db-5706009aa5fb/bin/uautomizer-ZsLfNo2U6R --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 9cac539e383843d894ccd4721e2a44b29ca12b08cf8fd39cde31a9fbdb5eb5a2
--- 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-38b53e6
[2022-11-25 17:05:03,541 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-11-25 17:05:03,543 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-25 17:05:03,566 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-25 17:05:03,567 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-25 17:05:03,568 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-25 17:05:03,570 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-25 17:05:03,572 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-25 17:05:03,575 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-25 17:05:03,576 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-25 17:05:03,577 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-11-25 17:05:03,579 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-25 17:05:03,580 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-25 17:05:03,581 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-25 17:05:03,583 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-25 17:05:03,585 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-25 17:05:03,586 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-25 17:05:03,588 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-25 17:05:03,590 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-25 17:05:03,593 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-25 17:05:03,595 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-25 17:05:03,597 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-25 17:05:03,598 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-11-25 17:05:03,600 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-25 17:05:03,604 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-25 17:05:03,605 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-25 17:05:03,606 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-25 17:05:03,607 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-25 17:05:03,608 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-25 17:05:03,610 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-25 17:05:03,610 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-25 17:05:03,612 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-25 17:05:03,613 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-25 17:05:03,615 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-25 17:05:03,616 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-25 17:05:03,617 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-25 17:05:03,618 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-25 17:05:03,618 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-25 17:05:03,619 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-25 17:05:03,620 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-25 17:05:03,622 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-11-25 17:05:03,623 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a841f4e5-1a97-4500-93db-5706009aa5fb/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-11-25 17:05:03,663 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-11-25 17:05:03,664 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-25 17:05:03,665 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-25 17:05:03,665 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-25 17:05:03,666 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-25 17:05:03,667 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-25 17:05:03,668 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-25 17:05:03,668 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-11-25 17:05:03,669 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-11-25 17:05:03,669 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-25 17:05:03,670 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-11-25 17:05:03,671 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-11-25 17:05:03,671 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-11-25 17:05:03,671 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-11-25 17:05:03,672 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-11-25 17:05:03,672 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-25 17:05:03,672 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-11-25 17:05:03,673 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-11-25 17:05:03,673 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-11-25 17:05:03,673 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-11-25 17:05:03,673 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-11-25 17:05:03,674 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-25 17:05:03,674 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-11-25 17:05:03,674 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-11-25 17:05:03,675 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-25 17:05:03,675 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-25 17:05:03,675 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-11-25 17:05:03,676 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-25 17:05:03,676 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-11-25 17:05:03,676 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-25 17:05:03,676 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-25 17:05:03,677 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-25 17:05:03,677 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2022-11-25 17:05:03,678 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-11-25 17:05:03,678 INFO  L138        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
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_a841f4e5-1a97-4500-93db-5706009aa5fb/bin/uautomizer-ZsLfNo2U6R/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_a841f4e5-1a97-4500-93db-5706009aa5fb/bin/uautomizer-ZsLfNo2U6R
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 -> 9cac539e383843d894ccd4721e2a44b29ca12b08cf8fd39cde31a9fbdb5eb5a2
[2022-11-25 17:05:04,042 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-25 17:05:04,076 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-25 17:05:04,079 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-25 17:05:04,081 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-11-25 17:05:04,082 INFO  L275        PluginConnector]: CDTParser initialized
[2022-11-25 17:05:04,083 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a841f4e5-1a97-4500-93db-5706009aa5fb/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/eca-rers2012/Problem08_label52.c
[2022-11-25 17:05:07,343 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-11-25 17:05:10,538 INFO  L351              CDTParser]: Found 1 translation units.
[2022-11-25 17:05:10,539 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a841f4e5-1a97-4500-93db-5706009aa5fb/sv-benchmarks/c/eca-rers2012/Problem08_label52.c
[2022-11-25 17:05:10,858 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a841f4e5-1a97-4500-93db-5706009aa5fb/bin/uautomizer-ZsLfNo2U6R/data/92c87149b/17714400d448415cb7e9f5e75ad2b5a1/FLAG10193df1b
[2022-11-25 17:05:10,875 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a841f4e5-1a97-4500-93db-5706009aa5fb/bin/uautomizer-ZsLfNo2U6R/data/92c87149b/17714400d448415cb7e9f5e75ad2b5a1
[2022-11-25 17:05:10,878 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-25 17:05:10,880 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-25 17:05:10,881 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-25 17:05:10,882 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-25 17:05:10,886 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-25 17:05:10,887 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:05:10" (1/1) ...
[2022-11-25 17:05:10,888 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a7acc87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:10, skipping insertion in model container
[2022-11-25 17:05:10,888 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:05:10" (1/1) ...
[2022-11-25 17:05:10,907 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-11-25 17:05:12,529 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-11-25 17:05:39,435 WARN  L237   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a841f4e5-1a97-4500-93db-5706009aa5fb/sv-benchmarks/c/eca-rers2012/Problem08_label52.c[5716248,5716261]
[2022-11-25 17:05:39,557 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-25 17:05:39,570 INFO  L203         MainTranslator]: Completed pre-run
[2022-11-25 17:05:55,461 WARN  L237   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a841f4e5-1a97-4500-93db-5706009aa5fb/sv-benchmarks/c/eca-rers2012/Problem08_label52.c[5716248,5716261]
[2022-11-25 17:05:55,464 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-25 17:06:02,425 INFO  L208         MainTranslator]: Completed translation
[2022-11-25 17:06:02,426 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:02 WrapperNode
[2022-11-25 17:06:02,437 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-25 17:06:02,439 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-25 17:06:02,439 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-25 17:06:02,439 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-25 17:06:02,452 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:02" (1/1) ...
[2022-11-25 17:06:03,980 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:02" (1/1) ...
[2022-11-25 17:06:09,603 INFO  L138                Inliner]: procedures = 95, calls = 89, calls flagged for inlining = 84, calls inlined = 84, statements flattened = 184288
[2022-11-25 17:06:09,604 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-25 17:06:09,604 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-25 17:06:09,605 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-25 17:06:09,605 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-11-25 17:06:09,612 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:02" (1/1) ...
[2022-11-25 17:06:09,612 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:02" (1/1) ...
[2022-11-25 17:06:10,426 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:02" (1/1) ...
[2022-11-25 17:06:10,426 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:02" (1/1) ...
[2022-11-25 17:06:12,873 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:02" (1/1) ...
[2022-11-25 17:06:13,302 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:02" (1/1) ...
[2022-11-25 17:06:13,634 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:02" (1/1) ...
[2022-11-25 17:06:13,752 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:02" (1/1) ...
[2022-11-25 17:06:14,442 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-25 17:06:14,447 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-25 17:06:14,447 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-11-25 17:06:14,447 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-11-25 17:06:14,448 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:02" (1/1) ...
[2022-11-25 17:06:14,471 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-25 17:06:14,482 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a841f4e5-1a97-4500-93db-5706009aa5fb/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 17:06:14,505 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a841f4e5-1a97-4500-93db-5706009aa5fb/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-25 17:06:14,535 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a841f4e5-1a97-4500-93db-5706009aa5fb/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-25 17:06:14,556 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-25 17:06:14,557 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-25 17:06:14,558 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-25 17:06:14,558 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-25 17:06:14,744 INFO  L235             CfgBuilder]: Building ICFG
[2022-11-25 17:06:14,746 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-25 17:07:52,275 INFO  L276             CfgBuilder]: Performing block encoding
[2022-11-25 17:07:52,393 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-25 17:07:52,394 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-11-25 17:07:52,421 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:07:52 BoogieIcfgContainer
[2022-11-25 17:07:52,421 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-25 17:07:52,425 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-25 17:07:52,425 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-11-25 17:07:52,429 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-11-25 17:07:52,430 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:05:10" (1/3) ...
[2022-11-25 17:07:52,431 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417ea3f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:07:52, skipping insertion in model container
[2022-11-25 17:07:52,431 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:02" (2/3) ...
[2022-11-25 17:07:52,432 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417ea3f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:07:52, skipping insertion in model container
[2022-11-25 17:07:52,432 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:07:52" (3/3) ...
[2022-11-25 17:07:52,434 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem08_label52.c
[2022-11-25 17:07:52,459 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-25 17:07:52,459 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-25 17:07:53,203 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-25 17:07:53,214 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;@67654808, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-25 17:07:53,215 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-11-25 17:07:53,308 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)
[2022-11-25 17:07:56,233 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17914
[2022-11-25 17:07:56,233 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 17:07:56,246 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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[2022-11-25 17:07:56,251 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 17:07:56,266 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 17:07:56,276 INFO  L85        PathProgramCache]: Analyzing trace with hash 1071939374, now seen corresponding path program 1 times
[2022-11-25 17:07:56,288 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 17:07:56,288 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472556031]
[2022-11-25 17:07:56,298 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 17:07:56,299 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms