./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label54.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_0deb0dae-fefe-4042-9f6b-a79a593679dd/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0deb0dae-fefe-4042-9f6b-a79a593679dd/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0deb0dae-fefe-4042-9f6b-a79a593679dd/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0deb0dae-fefe-4042-9f6b-a79a593679dd/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label54.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0deb0dae-fefe-4042-9f6b-a79a593679dd/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0deb0dae-fefe-4042-9f6b-a79a593679dd/bin/utaipan-ByfvJB40ur --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d4dfd97ceb6762815130c4cc12d2984f7fae2d1a6dacba5070982f7eed440802
--- 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
[2022-11-26 00:19:41,844 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-11-26 00:19:41,846 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-26 00:19:41,866 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-26 00:19:41,866 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-26 00:19:41,868 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-26 00:19:41,869 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-26 00:19:41,871 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-26 00:19:41,872 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-26 00:19:41,873 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-26 00:19:41,874 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-11-26 00:19:41,875 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-26 00:19:41,876 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-26 00:19:41,877 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-26 00:19:41,878 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-26 00:19:41,879 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-26 00:19:41,880 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-26 00:19:41,881 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-26 00:19:41,883 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-26 00:19:41,885 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-26 00:19:41,887 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-26 00:19:41,888 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-26 00:19:41,889 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-11-26 00:19:41,890 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-26 00:19:41,894 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-26 00:19:41,894 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-26 00:19:41,895 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-26 00:19:41,896 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-26 00:19:41,896 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-26 00:19:41,897 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-26 00:19:41,898 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-26 00:19:41,903 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-26 00:19:41,904 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-26 00:19:41,904 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-26 00:19:41,905 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-26 00:19:41,906 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-26 00:19:41,906 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-26 00:19:41,907 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-26 00:19:41,907 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-26 00:19:41,908 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-26 00:19:41,908 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-11-26 00:19:41,909 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0deb0dae-fefe-4042-9f6b-a79a593679dd/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf
[2022-11-26 00:19:41,934 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-11-26 00:19:41,934 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-26 00:19:41,935 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-26 00:19:41,935 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-26 00:19:41,936 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-26 00:19:41,936 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-26 00:19:41,936 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2022-11-26 00:19:41,936 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2022-11-26 00:19:41,937 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2022-11-26 00:19:41,937 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2022-11-26 00:19:41,937 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2022-11-26 00:19:41,937 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2022-11-26 00:19:41,938 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2022-11-26 00:19:41,938 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2022-11-26 00:19:41,938 INFO  L138        SettingsManager]:  * Interval Domain=false
[2022-11-26 00:19:41,938 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2022-11-26 00:19:41,939 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2022-11-26 00:19:41,939 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2022-11-26 00:19:41,940 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-26 00:19:41,940 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-11-26 00:19:41,940 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-11-26 00:19:41,940 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-11-26 00:19:41,941 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-11-26 00:19:41,941 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-11-26 00:19:41,941 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-26 00:19:41,941 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-11-26 00:19:41,942 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-11-26 00:19:41,942 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-11-26 00:19:41,942 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-11-26 00:19:41,942 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-11-26 00:19:41,943 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-26 00:19:41,943 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-11-26 00:19:41,943 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-26 00:19:41,943 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-26 00:19:41,944 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2022-11-26 00:19:41,944 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-11-26 00:19:41,944 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-26 00:19:41,944 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2022-11-26 00:19:41,944 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-26 00:19:41,945 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-26 00:19:41,945 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-11-26 00:19:41,945 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_0deb0dae-fefe-4042-9f6b-a79a593679dd/bin/utaipan-ByfvJB40ur/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_0deb0dae-fefe-4042-9f6b-a79a593679dd/bin/utaipan-ByfvJB40ur
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 -> Taipan
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 -> d4dfd97ceb6762815130c4cc12d2984f7fae2d1a6dacba5070982f7eed440802
[2022-11-26 00:19:42,210 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-26 00:19:42,235 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-26 00:19:42,237 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-26 00:19:42,239 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-11-26 00:19:42,239 INFO  L275        PluginConnector]: CDTParser initialized
[2022-11-26 00:19:42,240 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0deb0dae-fefe-4042-9f6b-a79a593679dd/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/eca-rers2012/Problem07_label54.c
[2022-11-26 00:19:45,394 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-11-26 00:19:47,289 INFO  L351              CDTParser]: Found 1 translation units.
[2022-11-26 00:19:47,290 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0deb0dae-fefe-4042-9f6b-a79a593679dd/sv-benchmarks/c/eca-rers2012/Problem07_label54.c
[2022-11-26 00:19:47,428 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0deb0dae-fefe-4042-9f6b-a79a593679dd/bin/utaipan-ByfvJB40ur/data/fe1236094/18a11193953445e484878dcd489edb6c/FLAGca768da84
[2022-11-26 00:19:47,441 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0deb0dae-fefe-4042-9f6b-a79a593679dd/bin/utaipan-ByfvJB40ur/data/fe1236094/18a11193953445e484878dcd489edb6c
[2022-11-26 00:19:47,444 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-26 00:19:47,445 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-26 00:19:47,447 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-26 00:19:47,447 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-26 00:19:47,452 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-26 00:19:47,452 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:19:47" (1/1) ...
[2022-11-26 00:19:47,454 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c11b4b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:19:47, skipping insertion in model container
[2022-11-26 00:19:47,455 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:19:47" (1/1) ...
[2022-11-26 00:19:47,462 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-11-26 00:19:48,357 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-11-26 00:19:59,630 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_0deb0dae-fefe-4042-9f6b-a79a593679dd/sv-benchmarks/c/eca-rers2012/Problem07_label54.c[2775294,2775307]
[2022-11-26 00:19:59,696 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-26 00:19:59,711 INFO  L203         MainTranslator]: Completed pre-run
[2022-11-26 00:20:06,960 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_0deb0dae-fefe-4042-9f6b-a79a593679dd/sv-benchmarks/c/eca-rers2012/Problem07_label54.c[2775294,2775307]
[2022-11-26 00:20:06,966 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-26 00:20:08,241 INFO  L208         MainTranslator]: Completed translation
[2022-11-26 00:20:08,242 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:08 WrapperNode
[2022-11-26 00:20:08,242 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-26 00:20:08,243 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-26 00:20:08,243 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-26 00:20:08,243 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-26 00:20:08,251 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:08" (1/1) ...
[2022-11-26 00:20:08,913 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:08" (1/1) ...
[2022-11-26 00:20:12,047 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2022-11-26 00:20:12,048 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-26 00:20:12,049 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-26 00:20:12,049 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-26 00:20:12,049 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-11-26 00:20:12,058 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:08" (1/1) ...
[2022-11-26 00:20:12,059 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:08" (1/1) ...
[2022-11-26 00:20:12,806 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:08" (1/1) ...
[2022-11-26 00:20:12,822 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:08" (1/1) ...
[2022-11-26 00:20:13,787 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:08" (1/1) ...
[2022-11-26 00:20:14,382 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:08" (1/1) ...
[2022-11-26 00:20:14,702 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:08" (1/1) ...
[2022-11-26 00:20:14,798 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:08" (1/1) ...
[2022-11-26 00:20:15,191 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-26 00:20:15,192 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-26 00:20:15,192 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-11-26 00:20:15,192 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-11-26 00:20:15,193 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:08" (1/1) ...
[2022-11-26 00:20:15,212 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-26 00:20:15,222 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0deb0dae-fefe-4042-9f6b-a79a593679dd/bin/utaipan-ByfvJB40ur/z3
[2022-11-26 00:20:15,237 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0deb0dae-fefe-4042-9f6b-a79a593679dd/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-26 00:20:15,263 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0deb0dae-fefe-4042-9f6b-a79a593679dd/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-26 00:20:15,278 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-26 00:20:15,279 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-26 00:20:15,279 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-26 00:20:15,279 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-26 00:20:15,417 INFO  L235             CfgBuilder]: Building ICFG
[2022-11-26 00:20:15,419 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-26 00:21:04,276 INFO  L276             CfgBuilder]: Performing block encoding
[2022-11-26 00:21:05,382 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-26 00:21:05,384 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-11-26 00:21:05,396 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:21:05 BoogieIcfgContainer
[2022-11-26 00:21:05,397 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-26 00:21:05,401 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-26 00:21:05,401 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-11-26 00:21:05,405 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-11-26 00:21:05,405 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:19:47" (1/3) ...
[2022-11-26 00:21:05,407 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ffba48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:21:05, skipping insertion in model container
[2022-11-26 00:21:05,407 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:20:08" (2/3) ...
[2022-11-26 00:21:05,408 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ffba48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:21:05, skipping insertion in model container
[2022-11-26 00:21:05,408 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:21:05" (3/3) ...
[2022-11-26 00:21:05,416 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem07_label54.c
[2022-11-26 00:21:05,435 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-26 00:21:05,435 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-26 00:21:05,697 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-26 00:21:05,704 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=FINITE_AUTOMATA, 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;@1b7f40a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-26 00:21:05,704 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-11-26 00:21:05,735 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10135 states, 10133 states have (on average 1.9951643146156124) internal successors, (20217), 10134 states have internal predecessors, (20217), 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)
[2022-11-26 00:21:06,428 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10086
[2022-11-26 00:21:06,428 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-26 00:21:06,433 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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[2022-11-26 00:21:06,435 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-26 00:21:06,441 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-26 00:21:06,447 INFO  L85        PathProgramCache]: Analyzing trace with hash 184882937, now seen corresponding path program 1 times
[2022-11-26 00:21:06,457 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-11-26 00:21:06,457 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929055598]
[2022-11-26 00:21:06,460 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-26 00:21:06,461 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-26 00:21:09,951 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-26 00:21:45,215 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-26 00:21:45,216 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-11-26 00:21:45,216 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929055598]
[2022-11-26 00:21:45,217 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929055598] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-26 00:21:45,217 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-26 00:21:45,219 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-26 00:21:45,221 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354817210]
[2022-11-26 00:21:45,221 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-26 00:21:45,235 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-26 00:21:45,235 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-11-26 00:21:45,274 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-26 00:21:45,275 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-26 00:21:45,303 INFO  L87              Difference]: Start difference. First operand  has 10135 states, 10133 states have (on average 1.9951643146156124) internal successors, (20217), 10134 states have internal predecessors, (20217), 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 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 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)
[2022-11-26 00:22:31,961 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-26 00:22:31,962 INFO  L93              Difference]: Finished difference Result 30401 states and 60647 transitions.
[2022-11-26 00:22:31,966 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-26 00:22:31,973 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 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 10085
[2022-11-26 00:22:31,998 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-26 00:22:32,086 INFO  L225             Difference]: With dead ends: 30401
[2022-11-26 00:22:32,087 INFO  L226             Difference]: Without dead ends: 20263
[2022-11-26 00:22:32,101 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
[2022-11-26 00:22:32,104 INFO  L413           NwaCegarLoop]: 722 mSDtfsCounter, 431 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 33587 mSolverCounterSat, 12062 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 45649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 12062 IncrementalHoareTripleChecker+Valid, 33587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.6s IncrementalHoareTripleChecker+Time
[2022-11-26 00:22:32,106 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 772 Invalid, 45649 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [12062 Valid, 33587 Invalid, 0 Unknown, 0 Unchecked, 45.6s Time]
[2022-11-26 00:22:32,146 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20263 states.
[2022-11-26 00:22:32,590 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20263 to 20263.
[2022-11-26 00:22:32,649 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20263 states, 20262 states have (on average 1.9627381304905736) internal successors, (39769), 20262 states have internal predecessors, (39769), 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)
[2022-11-26 00:22:32,713 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20263 states to 20263 states and 39769 transitions.
[2022-11-26 00:22:32,715 INFO  L78                 Accepts]: Start accepts. Automaton has 20263 states and 39769 transitions. Word has length 10085
[2022-11-26 00:22:32,732 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-26 00:22:32,733 INFO  L495      AbstractCegarLoop]: Abstraction has 20263 states and 39769 transitions.
[2022-11-26 00:22:32,737 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 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)
[2022-11-26 00:22:32,737 INFO  L276                IsEmpty]: Start isEmpty. Operand 20263 states and 39769 transitions.
[2022-11-26 00:22:33,965 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10091
[2022-11-26 00:22:33,965 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-26 00:22:33,968 INFO  L195           NwaCegarLoop]: trace histogram [2, 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, 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[2022-11-26 00:22:33,969 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-26 00:22:33,969 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-26 00:22:33,970 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-26 00:22:33,974 INFO  L85        PathProgramCache]: Analyzing trace with hash 1936509543, now seen corresponding path program 1 times
[2022-11-26 00:22:33,974 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-11-26 00:22:33,974 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581478702]
[2022-11-26 00:22:33,976 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-26 00:22:33,977 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-26 00:22:35,301 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat