./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem07_label31.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 35987657
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem07_label31.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 f83a9c43933e711b1a7beefadeccb1b5638af94004ddd15d91ccaba112a2f806
--- Real Ultimate output ---
This is Ultimate 0.2.2-?-3598765
[2022-07-20 23:15:12,587 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-07-20 23:15:12,589 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-07-20 23:15:12,621 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-07-20 23:15:12,621 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-07-20 23:15:12,623 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-07-20 23:15:12,626 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-07-20 23:15:12,628 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-07-20 23:15:12,629 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-07-20 23:15:12,633 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-07-20 23:15:12,633 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-07-20 23:15:12,635 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-07-20 23:15:12,636 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-07-20 23:15:12,637 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-07-20 23:15:12,638 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-07-20 23:15:12,643 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-07-20 23:15:12,644 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-07-20 23:15:12,644 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-07-20 23:15:12,645 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-07-20 23:15:12,646 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-07-20 23:15:12,647 INFO  L181        SettingsManager]: Resetting HornVerifier preferences to default values
[2022-07-20 23:15:12,648 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-07-20 23:15:12,649 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-07-20 23:15:12,650 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-07-20 23:15:12,651 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-07-20 23:15:12,656 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-07-20 23:15:12,657 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-07-20 23:15:12,657 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-07-20 23:15:12,658 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-07-20 23:15:12,658 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-07-20 23:15:12,659 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-07-20 23:15:12,659 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-07-20 23:15:12,660 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-07-20 23:15:12,661 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-07-20 23:15:12,662 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-07-20 23:15:12,662 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-07-20 23:15:12,663 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-07-20 23:15:12,663 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-07-20 23:15:12,663 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-07-20 23:15:12,663 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-07-20 23:15:12,664 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-07-20 23:15:12,664 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-07-20 23:15:12,665 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-07-20 23:15:12,692 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-07-20 23:15:12,693 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-07-20 23:15:12,693 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-07-20 23:15:12,693 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-07-20 23:15:12,694 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-07-20 23:15:12,694 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-07-20 23:15:12,695 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-07-20 23:15:12,695 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-07-20 23:15:12,695 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-07-20 23:15:12,696 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-07-20 23:15:12,696 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-07-20 23:15:12,696 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-07-20 23:15:12,696 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-07-20 23:15:12,696 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-07-20 23:15:12,697 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-07-20 23:15:12,697 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-07-20 23:15:12,697 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-07-20 23:15:12,697 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-07-20 23:15:12,697 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-07-20 23:15:12,697 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-07-20 23:15:12,698 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-07-20 23:15:12,698 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-07-20 23:15:12,698 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-07-20 23:15:12,698 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-07-20 23:15:12,698 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-07-20 23:15:12,698 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-07-20 23:15:12,699 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-07-20 23:15:12,699 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-07-20 23:15:12,699 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-07-20 23:15:12,699 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-07-20 23:15:12,699 INFO  L138        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2022-07-20 23:15:12,699 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-07-20 23:15:12,700 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-07-20 23:15:12,700 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
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 -> f83a9c43933e711b1a7beefadeccb1b5638af94004ddd15d91ccaba112a2f806
[2022-07-20 23:15:12,965 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-07-20 23:15:12,978 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-07-20 23:15:12,980 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-07-20 23:15:12,981 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-07-20 23:15:12,981 INFO  L275        PluginConnector]: CDTParser initialized
[2022-07-20 23:15:12,982 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem07_label31.c
[2022-07-20 23:15:13,026 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af27a60f4/6e3df5ea60524a92a97ef690e0180fff/FLAGdcb2cc622
[2022-07-20 23:15:14,707 INFO  L306              CDTParser]: Found 1 translation units.
[2022-07-20 23:15:14,708 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem07_label31.c
[2022-07-20 23:15:14,818 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af27a60f4/6e3df5ea60524a92a97ef690e0180fff/FLAGdcb2cc622
[2022-07-20 23:15:15,013 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af27a60f4/6e3df5ea60524a92a97ef690e0180fff
[2022-07-20 23:15:15,015 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-07-20 23:15:15,016 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-07-20 23:15:15,017 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-07-20 23:15:15,017 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-07-20 23:15:15,021 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-07-20 23:15:15,021 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:15:15" (1/1) ...
[2022-07-20 23:15:15,022 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18c8f206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:15:15, skipping insertion in model container
[2022-07-20 23:15:15,022 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:15:15" (1/1) ...
[2022-07-20 23:15:15,026 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-07-20 23:15:15,672 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-07-20 23:15:22,258 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem07_label31.c[2768307,2768320]
[2022-07-20 23:15:22,309 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-07-20 23:15:22,314 INFO  L203         MainTranslator]: Completed pre-run
[2022-07-20 23:15:26,032 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem07_label31.c[2768307,2768320]
[2022-07-20 23:15:26,040 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-07-20 23:15:26,664 INFO  L208         MainTranslator]: Completed translation
[2022-07-20 23:15:26,664 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:15:26 WrapperNode
[2022-07-20 23:15:26,665 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-07-20 23:15:26,665 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-07-20 23:15:26,665 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-07-20 23:15:26,665 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-07-20 23:15:26,670 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:15:26" (1/1) ...
[2022-07-20 23:15:27,168 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:15:26" (1/1) ...
[2022-07-20 23:15:28,690 INFO  L137                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2022-07-20 23:15:28,690 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-07-20 23:15:28,691 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-07-20 23:15:28,691 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-07-20 23:15:28,691 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-07-20 23:15:28,696 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:15:26" (1/1) ...
[2022-07-20 23:15:28,697 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:15:26" (1/1) ...
[2022-07-20 23:15:28,967 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:15:26" (1/1) ...
[2022-07-20 23:15:28,967 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:15:26" (1/1) ...
[2022-07-20 23:15:29,637 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:15:26" (1/1) ...
[2022-07-20 23:15:29,793 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:15:26" (1/1) ...
[2022-07-20 23:15:29,949 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:15:26" (1/1) ...
[2022-07-20 23:15:30,502 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-07-20 23:15:30,503 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-07-20 23:15:30,504 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-07-20 23:15:30,504 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-07-20 23:15:30,504 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:15:26" (1/1) ...
[2022-07-20 23:15:30,510 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-07-20 23:15:30,518 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-07-20 23:15:30,532 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-07-20 23:15:30,539 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-07-20 23:15:30,559 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-07-20 23:15:30,559 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-07-20 23:15:30,559 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-07-20 23:15:30,559 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-07-20 23:15:30,664 INFO  L234             CfgBuilder]: Building ICFG
[2022-07-20 23:15:30,671 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-07-20 23:15:56,953 INFO  L275             CfgBuilder]: Performing block encoding
[2022-07-20 23:15:56,992 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-07-20 23:15:56,992 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-07-20 23:15:57,001 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:15:57 BoogieIcfgContainer
[2022-07-20 23:15:57,001 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-07-20 23:15:57,004 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-07-20 23:15:57,005 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-07-20 23:15:57,006 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-07-20 23:15:57,007 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:15:15" (1/3) ...
[2022-07-20 23:15:57,007 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3928f1a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:15:57, skipping insertion in model container
[2022-07-20 23:15:57,007 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:15:26" (2/3) ...
[2022-07-20 23:15:57,008 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3928f1a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:15:57, skipping insertion in model container
[2022-07-20 23:15:57,008 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:15:57" (3/3) ...
[2022-07-20 23:15:57,009 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem07_label31.c
[2022-07-20 23:15:57,018 INFO  L201   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-07-20 23:15:57,018 INFO  L160   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-07-20 23:15:57,146 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-07-20 23:15:57,151 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@55ec3a32, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@23598339
[2022-07-20 23:15:57,151 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-07-20 23:15:57,182 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)
[2022-07-20 23:15:57,952 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10096
[2022-07-20 23:15:57,952 INFO  L187           NwaCegarLoop]: Found error trace
[2022-07-20 23:15:57,956 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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[2022-07-20 23:15:57,957 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-07-20 23:15:57,966 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-07-20 23:15:57,969 INFO  L85        PathProgramCache]: Analyzing trace with hash -1419885727, now seen corresponding path program 1 times
[2022-07-20 23:15:57,974 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-07-20 23:15:57,975 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503349311]
[2022-07-20 23:15:57,977 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-07-20 23:15:57,977 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-07-20 23:15:59,901 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-07-20 23:16:16,577 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-07-20 23:16:16,577 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-07-20 23:16:16,577 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503349311]
[2022-07-20 23:16:16,578 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503349311] provided 1 perfect and 0 imperfect interpolant sequences
[2022-07-20 23:16:16,578 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-07-20 23:16:16,579 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-07-20 23:16:16,580 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194010662]
[2022-07-20 23:16:16,580 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-07-20 23:16:16,605 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-07-20 23:16:16,606 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-07-20 23:16:16,626 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-07-20 23:16:16,627 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-07-20 23:16:16,652 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 3365.0) internal successors, (10095), 2 states have internal predecessors, (10095), 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)
[2022-07-20 23:16:44,643 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-07-20 23:16:44,644 INFO  L93              Difference]: Finished difference Result 30705 states and 61134 transitions.
[2022-07-20 23:16:44,646 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-07-20 23:16:44,650 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3365.0) internal successors, (10095), 2 states have internal predecessors, (10095), 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 10095
[2022-07-20 23:16:44,671 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-07-20 23:16:44,742 INFO  L225             Difference]: With dead ends: 30705
[2022-07-20 23:16:44,742 INFO  L226             Difference]: Without dead ends: 20384
[2022-07-20 23:16:44,756 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
[2022-07-20 23:16:44,758 INFO  L413           NwaCegarLoop]: 4082 mSDtfsCounter, 493 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 31005 mSolverCounterSat, 12527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 4135 SdHoareTripleChecker+Invalid, 43532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12527 IncrementalHoareTripleChecker+Valid, 31005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time
[2022-07-20 23:16:44,759 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 4135 Invalid, 43532 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12527 Valid, 31005 Invalid, 0 Unknown, 0 Unchecked, 27.3s Time]
[2022-07-20 23:16:44,789 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20384 states.
[2022-07-20 23:16:45,075 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20384 to 20384.
[2022-07-20 23:16:45,106 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)
[2022-07-20 23:16:45,175 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20384 states to 20384 states and 36578 transitions.
[2022-07-20 23:16:45,176 INFO  L78                 Accepts]: Start accepts. Automaton has 20384 states and 36578 transitions. Word has length 10095
[2022-07-20 23:16:45,189 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-07-20 23:16:45,189 INFO  L495      AbstractCegarLoop]: Abstraction has 20384 states and 36578 transitions.
[2022-07-20 23:16:45,192 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3365.0) internal successors, (10095), 2 states have internal predecessors, (10095), 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)
[2022-07-20 23:16:45,192 INFO  L276                IsEmpty]: Start isEmpty. Operand 20384 states and 36578 transitions.
[2022-07-20 23:16:45,745 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10100
[2022-07-20 23:16:45,746 INFO  L187           NwaCegarLoop]: Found error trace
[2022-07-20 23:16:45,749 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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[2022-07-20 23:16:45,750 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-07-20 23:16:45,750 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-07-20 23:16:45,751 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-07-20 23:16:45,753 INFO  L85        PathProgramCache]: Analyzing trace with hash 1145288761, now seen corresponding path program 1 times
[2022-07-20 23:16:45,753 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-07-20 23:16:45,753 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314393638]
[2022-07-20 23:16:45,754 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-07-20 23:16:45,754 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-07-20 23:16:46,564 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-07-20 23:16:55,249 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-07-20 23:16:55,249 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-07-20 23:16:55,250 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314393638]
[2022-07-20 23:16:55,250 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314393638] provided 1 perfect and 0 imperfect interpolant sequences
[2022-07-20 23:16:55,250 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-07-20 23:16:55,251 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-07-20 23:16:55,251 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659730575]
[2022-07-20 23:16:55,252 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-07-20 23:16:55,261 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-07-20 23:16:55,262 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-07-20 23:16:55,262 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-07-20 23:16:55,263 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-07-20 23:16:55,267 INFO  L87              Difference]: Start difference. First operand 20384 states and 36578 transitions. Second operand  has 3 states, 3 states have (on average 3366.3333333333335) internal successors, (10099), 2 states have internal predecessors, (10099), 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)