./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label05.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 53f42b1a
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee7d5f7-e407-43b7-a596-84c41d26ef11/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee7d5f7-e407-43b7-a596-84c41d26ef11/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee7d5f7-e407-43b7-a596-84c41d26ef11/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee7d5f7-e407-43b7-a596-84c41d26ef11/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee7d5f7-e407-43b7-a596-84c41d26ef11/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee7d5f7-e407-43b7-a596-84c41d26ef11/bin/uautomizer-DQz5hQGWxF --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 60c747697125130214666fa58f70bda4df6a10242c6c79f26cb54e981254217b
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-53f42b1
[2021-11-20 06:05:36,004 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-11-20 06:05:36,007 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-20 06:05:36,056 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-20 06:05:36,056 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-20 06:05:36,058 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-20 06:05:36,060 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-20 06:05:36,062 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-20 06:05:36,064 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-20 06:05:36,065 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-20 06:05:36,067 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-11-20 06:05:36,068 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-20 06:05:36,069 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-20 06:05:36,070 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-20 06:05:36,072 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-20 06:05:36,074 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-20 06:05:36,075 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-20 06:05:36,077 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-20 06:05:36,079 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-20 06:05:36,082 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-20 06:05:36,084 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-20 06:05:36,086 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-20 06:05:36,088 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-11-20 06:05:36,089 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-20 06:05:36,093 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-20 06:05:36,094 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-20 06:05:36,094 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-20 06:05:36,096 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-20 06:05:36,096 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-20 06:05:36,098 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-20 06:05:36,098 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-20 06:05:36,099 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-20 06:05:36,100 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-20 06:05:36,101 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-20 06:05:36,102 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-20 06:05:36,104 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-20 06:05:36,105 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-20 06:05:36,106 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-20 06:05:36,107 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-20 06:05:36,108 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-20 06:05:36,109 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-11-20 06:05:36,110 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee7d5f7-e407-43b7-a596-84c41d26ef11/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-11-20 06:05:36,147 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-11-20 06:05:36,147 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-20 06:05:36,148 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-20 06:05:36,148 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-20 06:05:36,149 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-20 06:05:36,150 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-20 06:05:36,150 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-20 06:05:36,151 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-11-20 06:05:36,151 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-11-20 06:05:36,151 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-20 06:05:36,153 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-11-20 06:05:36,153 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-11-20 06:05:36,153 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-11-20 06:05:36,153 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-11-20 06:05:36,154 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-11-20 06:05:36,154 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-20 06:05:36,154 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-11-20 06:05:36,155 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-11-20 06:05:36,155 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-11-20 06:05:36,155 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-11-20 06:05:36,155 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-11-20 06:05:36,156 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-20 06:05:36,156 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-11-20 06:05:36,156 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-11-20 06:05:36,157 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-20 06:05:36,157 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-20 06:05:36,157 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-11-20 06:05:36,158 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-20 06:05:36,158 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-11-20 06:05:36,159 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-20 06:05:36,160 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-11-20 06:05:36,160 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-20 06:05:36,160 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-20 06:05:36,161 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-11-20 06:05:36,161 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_bee7d5f7-e407-43b7-a596-84c41d26ef11/bin/uautomizer-DQz5hQGWxF/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_bee7d5f7-e407-43b7-a596-84c41d26ef11/bin/uautomizer-DQz5hQGWxF
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 -> 60c747697125130214666fa58f70bda4df6a10242c6c79f26cb54e981254217b
[2021-11-20 06:05:36,473 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-20 06:05:36,510 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-20 06:05:36,512 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-20 06:05:36,514 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-11-20 06:05:36,514 INFO  L275        PluginConnector]: CDTParser initialized
[2021-11-20 06:05:36,516 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee7d5f7-e407-43b7-a596-84c41d26ef11/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/eca-rers2012/Problem07_label05.c
[2021-11-20 06:05:36,586 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee7d5f7-e407-43b7-a596-84c41d26ef11/bin/uautomizer-DQz5hQGWxF/data/a31e59ff0/b49b7af400fd46329f163b99e07ecc42/FLAG4599faaa0
[2021-11-20 06:05:39,435 INFO  L306              CDTParser]: Found 1 translation units.
[2021-11-20 06:05:39,437 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee7d5f7-e407-43b7-a596-84c41d26ef11/sv-benchmarks/c/eca-rers2012/Problem07_label05.c
[2021-11-20 06:05:39,584 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee7d5f7-e407-43b7-a596-84c41d26ef11/bin/uautomizer-DQz5hQGWxF/data/a31e59ff0/b49b7af400fd46329f163b99e07ecc42/FLAG4599faaa0
[2021-11-20 06:05:39,974 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee7d5f7-e407-43b7-a596-84c41d26ef11/bin/uautomizer-DQz5hQGWxF/data/a31e59ff0/b49b7af400fd46329f163b99e07ecc42
[2021-11-20 06:05:39,976 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-20 06:05:39,978 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-20 06:05:39,979 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-20 06:05:39,979 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-20 06:05:39,982 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-20 06:05:39,983 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:05:39" (1/1) ...
[2021-11-20 06:05:39,984 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a6fabf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:39, skipping insertion in model container
[2021-11-20 06:05:39,985 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:05:39" (1/1) ...
[2021-11-20 06:05:39,991 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-11-20 06:05:41,041 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-11-20 06:05:52,785 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee7d5f7-e407-43b7-a596-84c41d26ef11/sv-benchmarks/c/eca-rers2012/Problem07_label05.c[2767111,2767124]
[2021-11-20 06:05:52,859 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-11-20 06:05:52,869 INFO  L203         MainTranslator]: Completed pre-run
[2021-11-20 06:05:59,721 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee7d5f7-e407-43b7-a596-84c41d26ef11/sv-benchmarks/c/eca-rers2012/Problem07_label05.c[2767111,2767124]
[2021-11-20 06:05:59,735 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-11-20 06:06:00,694 INFO  L208         MainTranslator]: Completed translation
[2021-11-20 06:06:00,694 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:00 WrapperNode
[2021-11-20 06:06:00,695 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-20 06:06:00,696 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-20 06:06:00,696 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-20 06:06:00,696 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-20 06:06:00,703 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:00" (1/1) ...
[2021-11-20 06:06:01,586 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:00" (1/1) ...
[2021-11-20 06:06:04,159 INFO  L137                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2021-11-20 06:06:04,160 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-20 06:06:04,160 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-20 06:06:04,160 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-20 06:06:04,161 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-11-20 06:06:04,169 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:00" (1/1) ...
[2021-11-20 06:06:04,170 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:00" (1/1) ...
[2021-11-20 06:06:04,944 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:00" (1/1) ...
[2021-11-20 06:06:04,945 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:00" (1/1) ...
[2021-11-20 06:06:06,617 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:00" (1/1) ...
[2021-11-20 06:06:06,855 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:00" (1/1) ...
[2021-11-20 06:06:07,124 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:00" (1/1) ...
[2021-11-20 06:06:07,456 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-20 06:06:07,457 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-20 06:06:07,457 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-11-20 06:06:07,458 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-11-20 06:06:07,466 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:00" (1/1) ...
[2021-11-20 06:06:07,482 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-20 06:06:07,496 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee7d5f7-e407-43b7-a596-84c41d26ef11/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 06:06:07,521 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee7d5f7-e407-43b7-a596-84c41d26ef11/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-20 06:06:07,540 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bee7d5f7-e407-43b7-a596-84c41d26ef11/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-20 06:06:07,573 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-11-20 06:06:07,574 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-20 06:06:07,575 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-20 06:06:07,575 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-20 06:06:07,706 INFO  L236             CfgBuilder]: Building ICFG
[2021-11-20 06:06:07,707 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-11-20 06:06:44,186 INFO  L277             CfgBuilder]: Performing block encoding
[2021-11-20 06:06:44,257 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-20 06:06:44,257 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-20 06:06:44,268 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:06:44 BoogieIcfgContainer
[2021-11-20 06:06:44,269 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-20 06:06:44,270 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-20 06:06:44,270 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-11-20 06:06:44,274 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-11-20 06:06:44,274 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:05:39" (1/3) ...
[2021-11-20 06:06:44,275 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd30e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:06:44, skipping insertion in model container
[2021-11-20 06:06:44,275 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:00" (2/3) ...
[2021-11-20 06:06:44,275 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd30e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:06:44, skipping insertion in model container
[2021-11-20 06:06:44,275 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:06:44" (3/3) ...
[2021-11-20 06:06:44,277 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem07_label05.c
[2021-11-20 06:06:44,286 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-20 06:06:44,286 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-20 06:06:44,364 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-20 06:06:44,371 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-11-20 06:06:44,371 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-20 06:06:44,532 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:06:45,483 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10089
[2021-11-20 06:06:45,484 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 06:06:45,491 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-11-20 06:06:45,494 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 06:06:45,504 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 06:06:45,512 INFO  L85        PathProgramCache]: Analyzing trace with hash -461362654, now seen corresponding path program 1 times
[2021-11-20 06:06:45,520 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 06:06:45,521 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221689222]
[2021-11-20 06:06:45,525 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 06:06:45,526 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 06:06:48,069 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 06:07:09,428 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 06:07:09,429 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 06:07:09,430 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221689222]
[2021-11-20 06:07:09,430 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221689222] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 06:07:09,431 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 06:07:09,433 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-20 06:07:09,435 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154600541]
[2021-11-20 06:07:09,436 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 06:07:09,456 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-20 06:07:09,457 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 06:07:09,488 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-20 06:07:09,489 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 06:07:09,523 INFO  L87              Difference]: Start difference. First operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 3362.6666666666665) internal successors, (10088), 2 states have internal predecessors, (10088), 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)