./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label17.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 38b53e6a
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_819722c7-236b-4dde-9fe1-e10bb2a195b6/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_819722c7-236b-4dde-9fe1-e10bb2a195b6/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_819722c7-236b-4dde-9fe1-e10bb2a195b6/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_819722c7-236b-4dde-9fe1-e10bb2a195b6/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label17.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_819722c7-236b-4dde-9fe1-e10bb2a195b6/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_819722c7-236b-4dde-9fe1-e10bb2a195b6/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 076813dc3dd2e9fdee9ded082601b1bae34511757f8a23a89b3ede7737a4fca9
--- 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 17:34:39,199 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-11-25 17:34:39,201 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-25 17:34:39,242 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-25 17:34:39,245 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-25 17:34:39,250 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-25 17:34:39,254 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-25 17:34:39,258 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-25 17:34:39,261 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-25 17:34:39,267 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-25 17:34:39,269 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-11-25 17:34:39,272 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-25 17:34:39,273 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-25 17:34:39,279 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-25 17:34:39,281 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-25 17:34:39,284 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-25 17:34:39,286 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-25 17:34:39,287 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-25 17:34:39,289 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-25 17:34:39,298 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-25 17:34:39,300 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-25 17:34:39,302 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-25 17:34:39,304 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-11-25 17:34:39,306 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-25 17:34:39,319 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-25 17:34:39,319 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-25 17:34:39,320 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-25 17:34:39,322 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-25 17:34:39,323 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-25 17:34:39,324 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-25 17:34:39,325 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-25 17:34:39,326 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-25 17:34:39,328 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-25 17:34:39,330 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-25 17:34:39,332 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-25 17:34:39,332 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-25 17:34:39,334 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-25 17:34:39,334 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-25 17:34:39,334 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-25 17:34:39,337 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-25 17:34:39,338 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-11-25 17:34:39,339 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_819722c7-236b-4dde-9fe1-e10bb2a195b6/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-11-25 17:34:39,393 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-11-25 17:34:39,393 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-25 17:34:39,394 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-25 17:34:39,395 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-25 17:34:39,396 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-25 17:34:39,397 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-25 17:34:39,397 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-25 17:34:39,398 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-11-25 17:34:39,398 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-11-25 17:34:39,398 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-25 17:34:39,400 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-11-25 17:34:39,400 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-11-25 17:34:39,401 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-11-25 17:34:39,401 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-11-25 17:34:39,401 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-11-25 17:34:39,401 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-25 17:34:39,402 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-11-25 17:34:39,402 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-11-25 17:34:39,402 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-11-25 17:34:39,403 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-11-25 17:34:39,403 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-11-25 17:34:39,403 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-25 17:34:39,403 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-11-25 17:34:39,404 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-11-25 17:34:39,404 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-25 17:34:39,404 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-25 17:34:39,405 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-11-25 17:34:39,405 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-25 17:34:39,406 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-11-25 17:34:39,406 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-25 17:34:39,406 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-25 17:34:39,407 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-25 17:34:39,407 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2022-11-25 17:34:39,407 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-11-25 17:34:39,408 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_819722c7-236b-4dde-9fe1-e10bb2a195b6/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_819722c7-236b-4dde-9fe1-e10bb2a195b6/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 -> 076813dc3dd2e9fdee9ded082601b1bae34511757f8a23a89b3ede7737a4fca9
[2022-11-25 17:34:39,706 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-25 17:34:39,727 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-25 17:34:39,730 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-25 17:34:39,731 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-11-25 17:34:39,732 INFO  L275        PluginConnector]: CDTParser initialized
[2022-11-25 17:34:39,733 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_819722c7-236b-4dde-9fe1-e10bb2a195b6/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/eca-rers2012/Problem07_label17.c
[2022-11-25 17:34:42,922 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-11-25 17:34:45,197 INFO  L351              CDTParser]: Found 1 translation units.
[2022-11-25 17:34:45,198 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_819722c7-236b-4dde-9fe1-e10bb2a195b6/sv-benchmarks/c/eca-rers2012/Problem07_label17.c
[2022-11-25 17:34:45,398 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_819722c7-236b-4dde-9fe1-e10bb2a195b6/bin/uautomizer-ZsLfNo2U6R/data/c111b9fee/0328cf1669464efa8c21547cb723a9ab/FLAGd482f5559
[2022-11-25 17:34:45,414 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_819722c7-236b-4dde-9fe1-e10bb2a195b6/bin/uautomizer-ZsLfNo2U6R/data/c111b9fee/0328cf1669464efa8c21547cb723a9ab
[2022-11-25 17:34:45,417 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-25 17:34:45,419 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-25 17:34:45,420 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-25 17:34:45,421 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-25 17:34:45,425 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-25 17:34:45,426 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:34:45" (1/1) ...
[2022-11-25 17:34:45,428 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1973b5d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:34:45, skipping insertion in model container
[2022-11-25 17:34:45,428 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:34:45" (1/1) ...
[2022-11-25 17:34:45,436 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-11-25 17:34:46,588 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-11-25 17:34:59,931 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_819722c7-236b-4dde-9fe1-e10bb2a195b6/sv-benchmarks/c/eca-rers2012/Problem07_label17.c[2771884,2771897]
[2022-11-25 17:34:59,994 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-25 17:35:00,011 INFO  L203         MainTranslator]: Completed pre-run
[2022-11-25 17:35:09,074 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_819722c7-236b-4dde-9fe1-e10bb2a195b6/sv-benchmarks/c/eca-rers2012/Problem07_label17.c[2771884,2771897]
[2022-11-25 17:35:09,085 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-25 17:35:09,970 INFO  L208         MainTranslator]: Completed translation
[2022-11-25 17:35:09,971 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:09 WrapperNode
[2022-11-25 17:35:09,971 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-25 17:35:09,972 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-25 17:35:09,972 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-25 17:35:09,972 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-25 17:35:09,981 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:09" (1/1) ...
[2022-11-25 17:35:10,746 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:09" (1/1) ...
[2022-11-25 17:35:13,503 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2022-11-25 17:35:13,503 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-25 17:35:13,504 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-25 17:35:13,504 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-25 17:35:13,505 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-11-25 17:35:13,517 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:09" (1/1) ...
[2022-11-25 17:35:13,517 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:09" (1/1) ...
[2022-11-25 17:35:14,270 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:09" (1/1) ...
[2022-11-25 17:35:14,270 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:09" (1/1) ...
[2022-11-25 17:35:15,434 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:09" (1/1) ...
[2022-11-25 17:35:15,651 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:09" (1/1) ...
[2022-11-25 17:35:15,975 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:09" (1/1) ...
[2022-11-25 17:35:16,093 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:09" (1/1) ...
[2022-11-25 17:35:16,520 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-25 17:35:16,522 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-25 17:35:16,524 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-11-25 17:35:16,525 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-11-25 17:35:16,526 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:09" (1/1) ...
[2022-11-25 17:35:16,541 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-25 17:35:16,555 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_819722c7-236b-4dde-9fe1-e10bb2a195b6/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 17:35:16,576 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_819722c7-236b-4dde-9fe1-e10bb2a195b6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-25 17:35:16,597 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_819722c7-236b-4dde-9fe1-e10bb2a195b6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-25 17:35:16,626 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-25 17:35:16,627 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-25 17:35:16,627 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-25 17:35:16,627 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-25 17:35:16,794 INFO  L235             CfgBuilder]: Building ICFG
[2022-11-25 17:35:16,796 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-25 17:36:10,611 INFO  L276             CfgBuilder]: Performing block encoding
[2022-11-25 17:36:10,667 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-25 17:36:10,667 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-11-25 17:36:10,678 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:36:10 BoogieIcfgContainer
[2022-11-25 17:36:10,678 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-25 17:36:10,680 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-25 17:36:10,680 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-11-25 17:36:10,684 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-11-25 17:36:10,685 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:34:45" (1/3) ...
[2022-11-25 17:36:10,686 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221537d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:36:10, skipping insertion in model container
[2022-11-25 17:36:10,686 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:09" (2/3) ...
[2022-11-25 17:36:10,687 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221537d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:36:10, skipping insertion in model container
[2022-11-25 17:36:10,687 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:36:10" (3/3) ...
[2022-11-25 17:36:10,688 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem07_label17.c
[2022-11-25 17:36:10,710 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-25 17:36:10,711 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-25 17:36:10,929 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-25 17:36:10,937 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;@66426611, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-25 17:36:10,937 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-11-25 17:36:10,970 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)
[2022-11-25 17:36:11,882 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10117
[2022-11-25 17:36:11,883 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 17:36:11,888 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 17:36:11,890 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 17:36:11,895 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 17:36:11,902 INFO  L85        PathProgramCache]: Analyzing trace with hash 1450475218, now seen corresponding path program 1 times
[2022-11-25 17:36:11,912 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 17:36:11,913 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408982954]
[2022-11-25 17:36:11,916 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 17:36:11,917 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 17:36:16,154 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 17:36:52,698 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 17:36:52,699 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 17:36:52,699 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408982954]
[2022-11-25 17:36:52,700 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408982954] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 17:36:52,701 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 17:36:52,703 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-25 17:36:52,705 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589396192]
[2022-11-25 17:36:52,705 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 17:36:52,724 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-25 17:36:52,724 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 17:36:52,773 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-25 17:36:52,774 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 17:36:52,813 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 3372.0) internal successors, (10116), 2 states have internal predecessors, (10116), 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 17:37:43,533 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 17:37:43,533 INFO  L93              Difference]: Finished difference Result 30705 states and 61134 transitions.
[2022-11-25 17:37:43,534 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-25 17:37:43,539 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3372.0) internal successors, (10116), 2 states have internal predecessors, (10116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10116
[2022-11-25 17:37:43,568 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 17:37:43,689 INFO  L225             Difference]: With dead ends: 30705
[2022-11-25 17:37:43,689 INFO  L226             Difference]: Without dead ends: 20384
[2022-11-25 17:37:43,716 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-25 17:37:43,720 INFO  L413           NwaCegarLoop]: 4082 mSDtfsCounter, 472 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 31005 mSolverCounterSat, 12527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 4135 SdHoareTripleChecker+Invalid, 43532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 12527 IncrementalHoareTripleChecker+Valid, 31005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.3s IncrementalHoareTripleChecker+Time
[2022-11-25 17:37:43,721 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 4135 Invalid, 43532 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [12527 Valid, 31005 Invalid, 0 Unknown, 0 Unchecked, 49.3s Time]
[2022-11-25 17:37:43,776 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20384 states.
[2022-11-25 17:37:44,274 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20384 to 20384.
[2022-11-25 17:37:44,309 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20384 states, 20383 states have (on average 1.7945346612373057) internal successors, (36578), 20383 states have internal predecessors, (36578), 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 17:37:44,362 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20384 states to 20384 states and 36578 transitions.
[2022-11-25 17:37:44,364 INFO  L78                 Accepts]: Start accepts. Automaton has 20384 states and 36578 transitions. Word has length 10116
[2022-11-25 17:37:44,382 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-25 17:37:44,383 INFO  L495      AbstractCegarLoop]: Abstraction has 20384 states and 36578 transitions.
[2022-11-25 17:37:44,394 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3372.0) internal successors, (10116), 2 states have internal predecessors, (10116), 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 17:37:44,394 INFO  L276                IsEmpty]: Start isEmpty. Operand 20384 states and 36578 transitions.
[2022-11-25 17:37:45,359 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10121
[2022-11-25 17:37:45,359 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-25 17:37:45,362 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:37:45,362 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-25 17:37:45,362 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 17:37:45,366 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 17:37:45,371 INFO  L85        PathProgramCache]: Analyzing trace with hash -938147590, now seen corresponding path program 1 times
[2022-11-25 17:37:45,371 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 17:37:45,372 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241503755]
[2022-11-25 17:37:45,375 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 17:37:45,376 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 17:37:46,892 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat