./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem07_label12.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 6c24879c
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_label12.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 8a742001fc048cf2c19a5ef7c9a088e49806c4d0813d840a2d758559c7b8b5ba
--- Real Ultimate output ---
This is Ultimate 0.2.2-?-6c24879
[2022-07-12 00:28:55,347 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-07-12 00:28:55,349 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-07-12 00:28:55,393 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-07-12 00:28:55,394 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-07-12 00:28:55,395 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-07-12 00:28:55,397 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-07-12 00:28:55,399 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-07-12 00:28:55,401 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-07-12 00:28:55,404 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-07-12 00:28:55,405 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-07-12 00:28:55,407 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-07-12 00:28:55,408 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-07-12 00:28:55,409 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-07-12 00:28:55,410 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-07-12 00:28:55,413 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-07-12 00:28:55,413 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-07-12 00:28:55,415 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-07-12 00:28:55,416 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-07-12 00:28:55,421 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-07-12 00:28:55,423 INFO  L181        SettingsManager]: Resetting HornVerifier preferences to default values
[2022-07-12 00:28:55,424 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-07-12 00:28:55,424 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-07-12 00:28:55,425 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-07-12 00:28:55,426 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-07-12 00:28:55,433 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-07-12 00:28:55,433 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-07-12 00:28:55,433 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-07-12 00:28:55,434 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-07-12 00:28:55,435 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-07-12 00:28:55,436 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-07-12 00:28:55,436 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-07-12 00:28:55,437 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-07-12 00:28:55,438 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-07-12 00:28:55,439 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-07-12 00:28:55,439 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-07-12 00:28:55,439 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-07-12 00:28:55,440 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-07-12 00:28:55,440 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-07-12 00:28:55,440 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-07-12 00:28:55,441 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-07-12 00:28:55,443 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-07-12 00:28:55,444 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-07-12 00:28:55,472 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-07-12 00:28:55,473 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-07-12 00:28:55,473 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-07-12 00:28:55,473 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-07-12 00:28:55,474 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-07-12 00:28:55,474 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-07-12 00:28:55,475 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-07-12 00:28:55,475 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-07-12 00:28:55,475 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-07-12 00:28:55,476 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-07-12 00:28:55,476 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-07-12 00:28:55,476 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-07-12 00:28:55,476 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-07-12 00:28:55,477 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-07-12 00:28:55,477 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-07-12 00:28:55,477 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-07-12 00:28:55,477 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-07-12 00:28:55,477 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-07-12 00:28:55,478 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-07-12 00:28:55,478 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-07-12 00:28:55,478 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-07-12 00:28:55,478 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-07-12 00:28:55,478 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-07-12 00:28:55,479 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-07-12 00:28:55,479 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-07-12 00:28:55,479 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-07-12 00:28:55,479 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-07-12 00:28:55,479 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-07-12 00:28:55,480 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-07-12 00:28:55,480 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-07-12 00:28:55,480 INFO  L138        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2022-07-12 00:28:55,480 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-07-12 00:28:55,480 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-07-12 00:28:55,481 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 -> 8a742001fc048cf2c19a5ef7c9a088e49806c4d0813d840a2d758559c7b8b5ba
[2022-07-12 00:28:55,707 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-07-12 00:28:55,721 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-07-12 00:28:55,723 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-07-12 00:28:55,723 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-07-12 00:28:55,724 INFO  L275        PluginConnector]: CDTParser initialized
[2022-07-12 00:28:55,725 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem07_label12.c
[2022-07-12 00:28:55,777 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90f0947dc/2fe46d7d1e664e8fb2ed1e2fe5d26e4a/FLAGf072e2536
[2022-07-12 00:28:57,568 INFO  L306              CDTParser]: Found 1 translation units.
[2022-07-12 00:28:57,568 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem07_label12.c
[2022-07-12 00:28:57,729 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90f0947dc/2fe46d7d1e664e8fb2ed1e2fe5d26e4a/FLAGf072e2536
[2022-07-12 00:28:57,799 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90f0947dc/2fe46d7d1e664e8fb2ed1e2fe5d26e4a
[2022-07-12 00:28:57,801 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-07-12 00:28:57,802 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-07-12 00:28:57,803 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-07-12 00:28:57,803 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-07-12 00:28:57,809 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-07-12 00:28:57,809 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:28:57" (1/1) ...
[2022-07-12 00:28:57,810 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@661ef21f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:28:57, skipping insertion in model container
[2022-07-12 00:28:57,810 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:28:57" (1/1) ...
[2022-07-12 00:28:57,816 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-07-12 00:28:58,479 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-07-12 00:29:06,106 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_label12.c[2774099,2774112]
[2022-07-12 00:29:06,157 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-07-12 00:29:06,170 INFO  L203         MainTranslator]: Completed pre-run
[2022-07-12 00:29:10,940 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_label12.c[2774099,2774112]
[2022-07-12 00:29:10,945 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-07-12 00:29:11,732 INFO  L208         MainTranslator]: Completed translation
[2022-07-12 00:29:11,732 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:11 WrapperNode
[2022-07-12 00:29:11,732 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-07-12 00:29:11,733 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-07-12 00:29:11,733 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-07-12 00:29:11,733 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-07-12 00:29:11,739 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:11" (1/1) ...
[2022-07-12 00:29:12,374 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:11" (1/1) ...
[2022-07-12 00:29:15,127 INFO  L137                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2022-07-12 00:29:15,127 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-07-12 00:29:15,128 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-07-12 00:29:15,128 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-07-12 00:29:15,128 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-07-12 00:29:15,134 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:11" (1/1) ...
[2022-07-12 00:29:15,135 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:11" (1/1) ...
[2022-07-12 00:29:15,492 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:11" (1/1) ...
[2022-07-12 00:29:15,500 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:11" (1/1) ...
[2022-07-12 00:29:16,447 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:11" (1/1) ...
[2022-07-12 00:29:16,633 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:11" (1/1) ...
[2022-07-12 00:29:16,879 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:11" (1/1) ...
[2022-07-12 00:29:17,549 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-07-12 00:29:17,552 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-07-12 00:29:17,553 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-07-12 00:29:17,553 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-07-12 00:29:17,554 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:11" (1/1) ...
[2022-07-12 00:29:17,566 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-07-12 00:29:17,576 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-07-12 00:29:17,592 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)
[2022-07-12 00:29:17,612 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
[2022-07-12 00:29:17,646 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-07-12 00:29:17,647 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-07-12 00:29:17,648 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-07-12 00:29:17,648 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-07-12 00:29:17,761 INFO  L234             CfgBuilder]: Building ICFG
[2022-07-12 00:29:17,762 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-07-12 00:29:47,779 INFO  L275             CfgBuilder]: Performing block encoding
[2022-07-12 00:29:47,833 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-07-12 00:29:47,834 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-07-12 00:29:47,843 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:29:47 BoogieIcfgContainer
[2022-07-12 00:29:47,844 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-07-12 00:29:47,845 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-07-12 00:29:47,846 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-07-12 00:29:47,850 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-07-12 00:29:47,850 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:28:57" (1/3) ...
[2022-07-12 00:29:47,851 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b55938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:29:47, skipping insertion in model container
[2022-07-12 00:29:47,851 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:11" (2/3) ...
[2022-07-12 00:29:47,851 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b55938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:29:47, skipping insertion in model container
[2022-07-12 00:29:47,851 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:29:47" (3/3) ...
[2022-07-12 00:29:47,853 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem07_label12.c
[2022-07-12 00:29:47,864 INFO  L201   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-07-12 00:29:47,864 INFO  L160   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-07-12 00:29:48,034 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-07-12 00:29:48,040 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@705e0687, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7ecd3c81
[2022-07-12 00:29:48,040 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-07-12 00:29:48,074 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)
[2022-07-12 00:29:48,837 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10130
[2022-07-12 00:29:48,838 INFO  L187           NwaCegarLoop]: Found error trace
[2022-07-12 00:29:48,843 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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[2022-07-12 00:29:48,846 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-07-12 00:29:48,854 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-07-12 00:29:48,858 INFO  L85        PathProgramCache]: Analyzing trace with hash 1781731849, now seen corresponding path program 1 times
[2022-07-12 00:29:48,865 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-07-12 00:29:48,866 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999187593]
[2022-07-12 00:29:48,867 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-07-12 00:29:48,868 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-07-12 00:29:51,793 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-07-12 00:30:12,266 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-07-12 00:30:12,267 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-07-12 00:30:12,267 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999187593]
[2022-07-12 00:30:12,268 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999187593] provided 1 perfect and 0 imperfect interpolant sequences
[2022-07-12 00:30:12,268 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-07-12 00:30:12,269 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-07-12 00:30:12,271 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992728375]
[2022-07-12 00:30:12,271 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-07-12 00:30:12,285 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-07-12 00:30:12,285 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-07-12 00:30:12,308 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-07-12 00:30:12,309 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-07-12 00:30:12,338 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 4 states, 4 states have (on average 2532.25) internal successors, (10129), 3 states have internal predecessors, (10129), 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)
[2022-07-12 00:31:04,985 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-07-12 00:31:04,986 INFO  L93              Difference]: Finished difference Result 40898 states and 81470 transitions.
[2022-07-12 00:31:04,986 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-07-12 00:31:04,990 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2532.25) internal successors, (10129), 3 states have internal predecessors, (10129), 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 10129
[2022-07-12 00:31:05,011 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-07-12 00:31:05,164 INFO  L225             Difference]: With dead ends: 40898
[2022-07-12 00:31:05,164 INFO  L226             Difference]: Without dead ends: 30574
[2022-07-12 00:31:05,187 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-07-12 00:31:05,190 INFO  L413           NwaCegarLoop]: 5139 mSDtfsCounter, 22296 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 51972 mSolverCounterSat, 19081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22296 SdHoareTripleChecker+Valid, 5256 SdHoareTripleChecker+Invalid, 71053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 19081 IncrementalHoareTripleChecker+Valid, 51972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.5s IncrementalHoareTripleChecker+Time
[2022-07-12 00:31:05,191 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22296 Valid, 5256 Invalid, 71053 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [19081 Valid, 51972 Invalid, 0 Unknown, 0 Unchecked, 51.5s Time]
[2022-07-12 00:31:05,239 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30574 states.
[2022-07-12 00:31:05,814 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30574 to 30574.
[2022-07-12 00:31:05,865 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30574 states, 30573 states have (on average 1.496549242795931) internal successors, (45754), 30573 states have internal predecessors, (45754), 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)
[2022-07-12 00:31:06,156 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30574 states to 30574 states and 45754 transitions.
[2022-07-12 00:31:06,157 INFO  L78                 Accepts]: Start accepts. Automaton has 30574 states and 45754 transitions. Word has length 10129
[2022-07-12 00:31:06,173 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-07-12 00:31:06,174 INFO  L495      AbstractCegarLoop]: Abstraction has 30574 states and 45754 transitions.
[2022-07-12 00:31:06,178 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2532.25) internal successors, (10129), 3 states have internal predecessors, (10129), 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)
[2022-07-12 00:31:06,178 INFO  L276                IsEmpty]: Start isEmpty. Operand 30574 states and 45754 transitions.
[2022-07-12 00:31:07,212 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13029
[2022-07-12 00:31:07,212 INFO  L187           NwaCegarLoop]: Found error trace
[2022-07-12 00:31:07,219 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2022-07-12 00:31:07,220 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-07-12 00:31:07,220 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-07-12 00:31:07,220 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-07-12 00:31:07,223 INFO  L85        PathProgramCache]: Analyzing trace with hash 1703780912, now seen corresponding path program 1 times
[2022-07-12 00:31:07,223 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-07-12 00:31:07,223 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794739276]
[2022-07-12 00:31:07,224 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-07-12 00:31:07,224 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-07-12 00:31:08,938 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat