./Ultimate.py --spec /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/properties/unreach-call.prp --file /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/bh-ex3.i --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 2329fc70
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/mnt/thread-witnesses/replication/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /mnt/thread-witnesses/replication/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /mnt/thread-witnesses/replication/UAutomizer-linux/data -tc /mnt/thread-witnesses/replication/UAutomizer-linux/config/AutomizerReach.xml -i /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/bh-ex3.i -s /mnt/thread-witnesses/replication/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /mnt/thread-witnesses/replication/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 64bit --witnessprinter.graph.data.programhash 67c3f42f5641e6993fb8445c2fa4fe121d859872ed17b178229098422831f110
--- Real Ultimate output ---
This is Ultimate 0.2.2-dev-2329fc7
[2023-02-16 10:47:10,792 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-02-16 10:47:10,794 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2023-02-16 10:47:10,833 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-02-16 10:47:10,833 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-02-16 10:47:10,840 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-02-16 10:47:10,842 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-02-16 10:47:10,844 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-02-16 10:47:10,845 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-02-16 10:47:10,848 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-02-16 10:47:10,849 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-02-16 10:47:10,863 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-02-16 10:47:10,864 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-02-16 10:47:10,865 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-02-16 10:47:10,865 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-02-16 10:47:10,866 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-02-16 10:47:10,866 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-02-16 10:47:10,867 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-02-16 10:47:10,868 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-02-16 10:47:10,869 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-02-16 10:47:10,870 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-02-16 10:47:10,872 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-02-16 10:47:10,874 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-02-16 10:47:10,874 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-02-16 10:47:10,880 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2023-02-16 10:47:10,882 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2023-02-16 10:47:10,882 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2023-02-16 10:47:10,883 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2023-02-16 10:47:10,884 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2023-02-16 10:47:10,885 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-02-16 10:47:10,885 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-02-16 10:47:10,886 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-02-16 10:47:10,891 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-02-16 10:47:10,892 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-02-16 10:47:10,892 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-02-16 10:47:10,893 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2023-02-16 10:47:10,893 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2023-02-16 10:47:10,894 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2023-02-16 10:47:10,894 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2023-02-16 10:47:10,895 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2023-02-16 10:47:10,896 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-02-16 10:47:10,897 INFO  L101        SettingsManager]: Beginning loading settings from /mnt/thread-witnesses/replication/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-02-16 10:47:10,945 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-02-16 10:47:10,945 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-02-16 10:47:10,945 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-02-16 10:47:10,946 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-02-16 10:47:10,946 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-02-16 10:47:10,946 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-02-16 10:47:10,947 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-02-16 10:47:10,947 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2023-02-16 10:47:10,947 INFO  L138        SettingsManager]:  * Use SBE=true
[2023-02-16 10:47:10,947 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-02-16 10:47:10,948 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-02-16 10:47:10,948 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-02-16 10:47:10,949 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-02-16 10:47:10,949 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-02-16 10:47:10,949 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-02-16 10:47:10,949 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-02-16 10:47:10,949 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-02-16 10:47:10,949 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-02-16 10:47:10,949 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-02-16 10:47:10,950 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-02-16 10:47:10,950 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-02-16 10:47:10,950 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-02-16 10:47:10,950 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-02-16 10:47:10,950 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-02-16 10:47:10,950 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-02-16 10:47:10,951 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-02-16 10:47:10,951 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-02-16 10:47:10,951 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-02-16 10:47:10,951 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-02-16 10:47:10,951 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-02-16 10:47:10,951 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-02-16 10:47:10,952 INFO  L138        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-02-16 10:47:10,952 INFO  L138        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/mnt/thread-witnesses/replication/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 -> /mnt/thread-witnesses/replication/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 -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67c3f42f5641e6993fb8445c2fa4fe121d859872ed17b178229098422831f110
[2023-02-16 10:47:11,806 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-02-16 10:47:11,847 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-02-16 10:47:11,849 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-02-16 10:47:11,850 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-02-16 10:47:11,850 INFO  L275        PluginConnector]: CDTParser initialized
[2023-02-16 10:47:11,851 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/bh-ex3.i
[2023-02-16 10:47:15,167 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-02-16 10:47:15,462 INFO  L351              CDTParser]: Found 1 translation units.
[2023-02-16 10:47:15,464 INFO  L172              CDTParser]: Scanning /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/bh-ex3.i
[2023-02-16 10:47:15,469 INFO  L394              CDTParser]: About to delete temporary CDT project at /mnt/thread-witnesses/replication/UAutomizer-linux/data/686bf92bd/14aaba3c7050403eac88602316cfecee/FLAG8ec7981a4
[2023-02-16 10:47:15,486 INFO  L402              CDTParser]: Successfully deleted /mnt/thread-witnesses/replication/UAutomizer-linux/data/686bf92bd/14aaba3c7050403eac88602316cfecee
[2023-02-16 10:47:15,489 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-02-16 10:47:15,491 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-02-16 10:47:15,500 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-02-16 10:47:15,500 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-02-16 10:47:15,503 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-02-16 10:47:15,503 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 10:47:15" (1/1) ...
[2023-02-16 10:47:15,504 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ad6a458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 10:47:15, skipping insertion in model container
[2023-02-16 10:47:15,504 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 10:47:15" (1/1) ...
[2023-02-16 10:47:15,509 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-02-16 10:47:15,524 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-02-16 10:47:15,685 WARN  L237   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/bh-ex3.i[799,812]
[2023-02-16 10:47:15,696 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2023-02-16 10:47:15,707 INFO  L203         MainTranslator]: Completed pre-run
[2023-02-16 10:47:15,718 WARN  L237   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/bh-ex3.i[799,812]
[2023-02-16 10:47:15,725 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2023-02-16 10:47:15,736 INFO  L208         MainTranslator]: Completed translation
[2023-02-16 10:47:15,737 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 10:47:15 WrapperNode
[2023-02-16 10:47:15,737 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-02-16 10:47:15,738 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-02-16 10:47:15,738 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-02-16 10:47:15,738 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2023-02-16 10:47:15,743 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 10:47:15" (1/1) ...
[2023-02-16 10:47:15,760 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 10:47:15" (1/1) ...
[2023-02-16 10:47:15,781 INFO  L138                Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40
[2023-02-16 10:47:15,782 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-02-16 10:47:15,782 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-02-16 10:47:15,782 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-02-16 10:47:15,782 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-02-16 10:47:15,788 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 10:47:15" (1/1) ...
[2023-02-16 10:47:15,788 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 10:47:15" (1/1) ...
[2023-02-16 10:47:15,790 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 10:47:15" (1/1) ...
[2023-02-16 10:47:15,790 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 10:47:15" (1/1) ...
[2023-02-16 10:47:15,799 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 10:47:15" (1/1) ...
[2023-02-16 10:47:15,805 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 10:47:15" (1/1) ...
[2023-02-16 10:47:15,809 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 10:47:15" (1/1) ...
[2023-02-16 10:47:15,810 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 10:47:15" (1/1) ...
[2023-02-16 10:47:15,813 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-02-16 10:47:15,814 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-02-16 10:47:15,815 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-02-16 10:47:15,815 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-02-16 10:47:15,816 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 10:47:15" (1/1) ...
[2023-02-16 10:47:15,880 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-02-16 10:47:15,920 INFO  L189       MonitoredProcess]: No working directory specified, using /mnt/thread-witnesses/replication/UAutomizer-linux/z3
[2023-02-16 10:47:16,005 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /mnt/thread-witnesses/replication/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-02-16 10:47:16,010 INFO  L327       MonitoredProcess]: [MP /mnt/thread-witnesses/replication/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-02-16 10:47:16,087 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-02-16 10:47:16,087 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-02-16 10:47:16,087 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-02-16 10:47:16,087 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-02-16 10:47:16,088 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-02-16 10:47:16,088 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-02-16 10:47:16,140 INFO  L235             CfgBuilder]: Building ICFG
[2023-02-16 10:47:16,141 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-02-16 10:47:16,318 INFO  L276             CfgBuilder]: Performing block encoding
[2023-02-16 10:47:16,323 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-02-16 10:47:16,323 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2023-02-16 10:47:16,324 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 10:47:16 BoogieIcfgContainer
[2023-02-16 10:47:16,325 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-02-16 10:47:16,338 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-02-16 10:47:16,347 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-02-16 10:47:16,395 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-02-16 10:47:16,396 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 10:47:15" (1/3) ...
[2023-02-16 10:47:16,396 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c7106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 10:47:16, skipping insertion in model container
[2023-02-16 10:47:16,396 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 10:47:15" (2/3) ...
[2023-02-16 10:47:16,396 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c7106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 10:47:16, skipping insertion in model container
[2023-02-16 10:47:16,396 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 10:47:16" (3/3) ...
[2023-02-16 10:47:16,397 INFO  L112   eAbstractionObserver]: Analyzing ICFG bh-ex3.i
[2023-02-16 10:47:16,419 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-02-16 10:47:16,427 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-02-16 10:47:16,514 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-02-16 10:47:16,544 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@364fd25, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-02-16 10:47:16,565 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-02-16 10:47:16,568 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 24 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-02-16 10:47:16,573 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2023-02-16 10:47:16,582 INFO  L187           NwaCegarLoop]: Found error trace
[2023-02-16 10:47:16,583 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2023-02-16 10:47:16,583 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-02-16 10:47:16,594 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-02-16 10:47:16,594 INFO  L85        PathProgramCache]: Analyzing trace with hash 1812217503, now seen corresponding path program 1 times
[2023-02-16 10:47:16,600 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-02-16 10:47:16,606 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545646699]
[2023-02-16 10:47:16,606 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-02-16 10:47:16,607 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-02-16 10:47:16,788 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:17,025 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-02-16 10:47:17,025 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-02-16 10:47:17,033 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545646699]
[2023-02-16 10:47:17,034 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545646699] provided 1 perfect and 0 imperfect interpolant sequences
[2023-02-16 10:47:17,034 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-02-16 10:47:17,034 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-02-16 10:47:17,035 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981797493]
[2023-02-16 10:47:17,036 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-02-16 10:47:17,039 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-02-16 10:47:17,039 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-02-16 10:47:17,108 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-02-16 10:47:17,110 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-02-16 10:47:17,111 INFO  L87              Difference]: Start difference. First operand  has 24 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand  has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-02-16 10:47:17,229 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-02-16 10:47:17,230 INFO  L93              Difference]: Finished difference Result 46 states and 71 transitions.
[2023-02-16 10:47:17,231 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-02-16 10:47:17,233 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7
[2023-02-16 10:47:17,233 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-02-16 10:47:17,256 INFO  L225             Difference]: With dead ends: 46
[2023-02-16 10:47:17,257 INFO  L226             Difference]: Without dead ends: 24
[2023-02-16 10:47:17,260 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-02-16 10:47:17,267 INFO  L413           NwaCegarLoop]: 23 mSDtfsCounter, 16 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-02-16 10:47:17,268 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 68 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-02-16 10:47:17,296 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2023-02-16 10:47:17,335 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2023-02-16 10:47:17,336 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-02-16 10:47:17,338 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions.
[2023-02-16 10:47:17,340 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 7
[2023-02-16 10:47:17,340 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-02-16 10:47:17,340 INFO  L495      AbstractCegarLoop]: Abstraction has 24 states and 31 transitions.
[2023-02-16 10:47:17,349 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-02-16 10:47:17,350 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions.
[2023-02-16 10:47:17,350 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2023-02-16 10:47:17,350 INFO  L187           NwaCegarLoop]: Found error trace
[2023-02-16 10:47:17,350 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-02-16 10:47:17,351 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-02-16 10:47:17,351 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-02-16 10:47:17,352 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-02-16 10:47:17,352 INFO  L85        PathProgramCache]: Analyzing trace with hash 1728955928, now seen corresponding path program 1 times
[2023-02-16 10:47:17,352 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-02-16 10:47:17,352 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389637527]
[2023-02-16 10:47:17,352 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-02-16 10:47:17,352 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-02-16 10:47:17,361 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:17,525 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2023-02-16 10:47:17,531 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:17,546 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-02-16 10:47:17,559 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-02-16 10:47:17,560 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389637527]
[2023-02-16 10:47:17,560 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389637527] provided 1 perfect and 0 imperfect interpolant sequences
[2023-02-16 10:47:17,560 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-02-16 10:47:17,560 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-02-16 10:47:17,561 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088616452]
[2023-02-16 10:47:17,561 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-02-16 10:47:17,562 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-02-16 10:47:17,562 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-02-16 10:47:17,563 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-02-16 10:47:17,563 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-02-16 10:47:17,563 INFO  L87              Difference]: Start difference. First operand 24 states and 31 transitions. Second operand  has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-02-16 10:47:17,606 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-02-16 10:47:17,606 INFO  L93              Difference]: Finished difference Result 30 states and 36 transitions.
[2023-02-16 10:47:17,607 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-02-16 10:47:17,607 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12
[2023-02-16 10:47:17,611 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-02-16 10:47:17,612 INFO  L225             Difference]: With dead ends: 30
[2023-02-16 10:47:17,612 INFO  L226             Difference]: Without dead ends: 28
[2023-02-16 10:47:17,613 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-02-16 10:47:17,614 INFO  L413           NwaCegarLoop]: 26 mSDtfsCounter, 14 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-02-16 10:47:17,615 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 74 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-02-16 10:47:17,619 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2023-02-16 10:47:17,626 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2023-02-16 10:47:17,627 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 28 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-02-16 10:47:17,628 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions.
[2023-02-16 10:47:17,628 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 12
[2023-02-16 10:47:17,629 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-02-16 10:47:17,629 INFO  L495      AbstractCegarLoop]: Abstraction has 28 states and 34 transitions.
[2023-02-16 10:47:17,629 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-02-16 10:47:17,630 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions.
[2023-02-16 10:47:17,633 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2023-02-16 10:47:17,634 INFO  L187           NwaCegarLoop]: Found error trace
[2023-02-16 10:47:17,634 INFO  L195           NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-02-16 10:47:17,634 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-02-16 10:47:17,635 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-02-16 10:47:17,642 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-02-16 10:47:17,642 INFO  L85        PathProgramCache]: Analyzing trace with hash -1859541668, now seen corresponding path program 1 times
[2023-02-16 10:47:17,643 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-02-16 10:47:17,643 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877313597]
[2023-02-16 10:47:17,643 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-02-16 10:47:17,643 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-02-16 10:47:17,651 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:17,742 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2023-02-16 10:47:17,744 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:17,748 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-02-16 10:47:17,749 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:17,764 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-02-16 10:47:17,764 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-02-16 10:47:17,764 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877313597]
[2023-02-16 10:47:17,764 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877313597] provided 1 perfect and 0 imperfect interpolant sequences
[2023-02-16 10:47:17,764 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-02-16 10:47:17,765 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-02-16 10:47:17,765 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142219171]
[2023-02-16 10:47:17,765 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-02-16 10:47:17,765 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-02-16 10:47:17,765 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-02-16 10:47:17,766 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-02-16 10:47:17,766 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-02-16 10:47:17,766 INFO  L87              Difference]: Start difference. First operand 28 states and 34 transitions. Second operand  has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-02-16 10:47:17,809 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-02-16 10:47:17,810 INFO  L93              Difference]: Finished difference Result 64 states and 84 transitions.
[2023-02-16 10:47:17,811 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-02-16 10:47:17,811 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20
[2023-02-16 10:47:17,812 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-02-16 10:47:17,812 INFO  L225             Difference]: With dead ends: 64
[2023-02-16 10:47:17,813 INFO  L226             Difference]: Without dead ends: 38
[2023-02-16 10:47:17,814 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-02-16 10:47:17,815 INFO  L413           NwaCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-02-16 10:47:17,817 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 52 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-02-16 10:47:17,818 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2023-02-16 10:47:17,831 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38.
[2023-02-16 10:47:17,838 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 38 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2023-02-16 10:47:17,839 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 51 transitions.
[2023-02-16 10:47:17,839 INFO  L78                 Accepts]: Start accepts. Automaton has 38 states and 51 transitions. Word has length 20
[2023-02-16 10:47:17,840 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-02-16 10:47:17,840 INFO  L495      AbstractCegarLoop]: Abstraction has 38 states and 51 transitions.
[2023-02-16 10:47:17,851 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-02-16 10:47:17,851 INFO  L276                IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions.
[2023-02-16 10:47:17,852 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2023-02-16 10:47:17,853 INFO  L187           NwaCegarLoop]: Found error trace
[2023-02-16 10:47:17,853 INFO  L195           NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-02-16 10:47:17,853 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-02-16 10:47:17,854 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-02-16 10:47:17,855 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-02-16 10:47:17,856 INFO  L85        PathProgramCache]: Analyzing trace with hash -71482326, now seen corresponding path program 1 times
[2023-02-16 10:47:17,856 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-02-16 10:47:17,856 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202632632]
[2023-02-16 10:47:17,856 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-02-16 10:47:17,857 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-02-16 10:47:17,864 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:17,924 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2023-02-16 10:47:17,932 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:17,938 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-02-16 10:47:17,941 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:17,950 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-02-16 10:47:17,967 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-02-16 10:47:17,968 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202632632]
[2023-02-16 10:47:17,968 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202632632] provided 1 perfect and 0 imperfect interpolant sequences
[2023-02-16 10:47:17,968 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-02-16 10:47:17,969 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-02-16 10:47:17,969 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041223595]
[2023-02-16 10:47:17,969 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-02-16 10:47:17,970 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-02-16 10:47:17,970 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-02-16 10:47:17,970 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-02-16 10:47:17,971 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-02-16 10:47:17,973 INFO  L87              Difference]: Start difference. First operand 38 states and 51 transitions. Second operand  has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-02-16 10:47:18,005 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-02-16 10:47:18,016 INFO  L93              Difference]: Finished difference Result 92 states and 132 transitions.
[2023-02-16 10:47:18,016 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-02-16 10:47:18,017 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20
[2023-02-16 10:47:18,017 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-02-16 10:47:18,018 INFO  L225             Difference]: With dead ends: 92
[2023-02-16 10:47:18,019 INFO  L226             Difference]: Without dead ends: 56
[2023-02-16 10:47:18,020 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-02-16 10:47:18,021 INFO  L413           NwaCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-02-16 10:47:18,023 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 52 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-02-16 10:47:18,025 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2023-02-16 10:47:18,042 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56.
[2023-02-16 10:47:18,046 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 56 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-02-16 10:47:18,047 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 81 transitions.
[2023-02-16 10:47:18,049 INFO  L78                 Accepts]: Start accepts. Automaton has 56 states and 81 transitions. Word has length 20
[2023-02-16 10:47:18,049 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-02-16 10:47:18,049 INFO  L495      AbstractCegarLoop]: Abstraction has 56 states and 81 transitions.
[2023-02-16 10:47:18,049 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-02-16 10:47:18,050 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 81 transitions.
[2023-02-16 10:47:18,051 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2023-02-16 10:47:18,067 INFO  L187           NwaCegarLoop]: Found error trace
[2023-02-16 10:47:18,067 INFO  L195           NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1]
[2023-02-16 10:47:18,068 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-02-16 10:47:18,068 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-02-16 10:47:18,069 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-02-16 10:47:18,069 INFO  L85        PathProgramCache]: Analyzing trace with hash -344747264, now seen corresponding path program 1 times
[2023-02-16 10:47:18,069 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-02-16 10:47:18,069 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977762215]
[2023-02-16 10:47:18,069 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-02-16 10:47:18,070 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-02-16 10:47:18,084 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:18,177 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2023-02-16 10:47:18,180 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:18,185 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-02-16 10:47:18,186 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:18,190 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2023-02-16 10:47:18,194 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:18,211 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2023-02-16 10:47:18,215 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:18,224 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2023-02-16 10:47:18,224 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-02-16 10:47:18,224 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977762215]
[2023-02-16 10:47:18,224 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977762215] provided 0 perfect and 1 imperfect interpolant sequences
[2023-02-16 10:47:18,225 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347155638]
[2023-02-16 10:47:18,225 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-02-16 10:47:18,226 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-02-16 10:47:18,226 INFO  L189       MonitoredProcess]: No working directory specified, using /mnt/thread-witnesses/replication/UAutomizer-linux/z3
[2023-02-16 10:47:18,240 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-02-16 10:47:18,274 INFO  L327       MonitoredProcess]: [MP /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-02-16 10:47:18,331 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:18,332 INFO  L263         TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-02-16 10:47:18,336 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2023-02-16 10:47:18,441 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2023-02-16 10:47:18,441 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2023-02-16 10:47:18,535 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2023-02-16 10:47:18,535 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [347155638] provided 0 perfect and 2 imperfect interpolant sequences
[2023-02-16 10:47:18,535 INFO  L184   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-02-16 10:47:18,538 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2023-02-16 10:47:18,539 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504394204]
[2023-02-16 10:47:18,540 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-02-16 10:47:18,544 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-02-16 10:47:18,544 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-02-16 10:47:18,545 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-02-16 10:47:18,547 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2023-02-16 10:47:18,549 INFO  L87              Difference]: Start difference. First operand 56 states and 81 transitions. Second operand  has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 6 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10)
[2023-02-16 10:47:18,657 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-02-16 10:47:18,657 INFO  L93              Difference]: Finished difference Result 164 states and 256 transitions.
[2023-02-16 10:47:18,657 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-02-16 10:47:18,657 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 6 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 34
[2023-02-16 10:47:18,662 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-02-16 10:47:18,663 INFO  L225             Difference]: With dead ends: 164
[2023-02-16 10:47:18,663 INFO  L226             Difference]: Without dead ends: 110
[2023-02-16 10:47:18,664 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2023-02-16 10:47:18,665 INFO  L413           NwaCegarLoop]: 39 mSDtfsCounter, 49 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-02-16 10:47:18,665 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 103 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-02-16 10:47:18,666 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 110 states.
[2023-02-16 10:47:18,705 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110.
[2023-02-16 10:47:18,706 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 110 states, 79 states have (on average 1.481012658227848) internal successors, (117), 79 states have internal predecessors, (117), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27)
[2023-02-16 10:47:18,707 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 171 transitions.
[2023-02-16 10:47:18,710 INFO  L78                 Accepts]: Start accepts. Automaton has 110 states and 171 transitions. Word has length 34
[2023-02-16 10:47:18,710 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-02-16 10:47:18,710 INFO  L495      AbstractCegarLoop]: Abstraction has 110 states and 171 transitions.
[2023-02-16 10:47:18,711 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 6 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10)
[2023-02-16 10:47:18,711 INFO  L276                IsEmpty]: Start isEmpty. Operand 110 states and 171 transitions.
[2023-02-16 10:47:18,712 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2023-02-16 10:47:18,712 INFO  L187           NwaCegarLoop]: Found error trace
[2023-02-16 10:47:18,712 INFO  L195           NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1]
[2023-02-16 10:47:18,719 INFO  L540       MonitoredProcess]: [MP /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-02-16 10:47:18,916 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-02-16 10:47:18,917 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-02-16 10:47:18,917 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-02-16 10:47:18,917 INFO  L85        PathProgramCache]: Analyzing trace with hash 1952058334, now seen corresponding path program 1 times
[2023-02-16 10:47:18,917 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-02-16 10:47:18,918 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140535919]
[2023-02-16 10:47:18,918 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-02-16 10:47:18,918 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-02-16 10:47:18,936 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:19,007 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2023-02-16 10:47:19,009 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:19,011 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-02-16 10:47:19,012 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:19,015 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2023-02-16 10:47:19,016 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:19,018 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2023-02-16 10:47:19,020 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:19,030 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2023-02-16 10:47:19,030 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-02-16 10:47:19,030 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140535919]
[2023-02-16 10:47:19,030 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140535919] provided 0 perfect and 1 imperfect interpolant sequences
[2023-02-16 10:47:19,031 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082382476]
[2023-02-16 10:47:19,031 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-02-16 10:47:19,031 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-02-16 10:47:19,031 INFO  L189       MonitoredProcess]: No working directory specified, using /mnt/thread-witnesses/replication/UAutomizer-linux/z3
[2023-02-16 10:47:19,043 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-02-16 10:47:19,084 INFO  L327       MonitoredProcess]: [MP /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-02-16 10:47:19,123 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:19,124 INFO  L263         TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-02-16 10:47:19,129 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2023-02-16 10:47:19,183 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2023-02-16 10:47:19,183 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2023-02-16 10:47:19,254 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2023-02-16 10:47:19,255 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082382476] provided 0 perfect and 2 imperfect interpolant sequences
[2023-02-16 10:47:19,255 INFO  L184   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-02-16 10:47:19,255 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2023-02-16 10:47:19,255 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320706927]
[2023-02-16 10:47:19,256 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-02-16 10:47:19,256 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-02-16 10:47:19,257 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-02-16 10:47:19,258 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-02-16 10:47:19,258 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2023-02-16 10:47:19,258 INFO  L87              Difference]: Start difference. First operand 110 states and 171 transitions. Second operand  has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 6 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10)
[2023-02-16 10:47:19,339 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-02-16 10:47:19,339 INFO  L93              Difference]: Finished difference Result 344 states and 562 transitions.
[2023-02-16 10:47:19,340 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-02-16 10:47:19,340 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 6 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 34
[2023-02-16 10:47:19,340 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-02-16 10:47:19,342 INFO  L225             Difference]: With dead ends: 344
[2023-02-16 10:47:19,342 INFO  L226             Difference]: Without dead ends: 236
[2023-02-16 10:47:19,343 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2023-02-16 10:47:19,358 INFO  L413           NwaCegarLoop]: 39 mSDtfsCounter, 42 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-02-16 10:47:19,358 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 113 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-02-16 10:47:19,359 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 236 states.
[2023-02-16 10:47:19,414 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236.
[2023-02-16 10:47:19,415 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 236 states, 172 states have (on average 1.5) internal successors, (258), 172 states have internal predecessors, (258), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60)
[2023-02-16 10:47:19,433 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 378 transitions.
[2023-02-16 10:47:19,434 INFO  L78                 Accepts]: Start accepts. Automaton has 236 states and 378 transitions. Word has length 34
[2023-02-16 10:47:19,434 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-02-16 10:47:19,434 INFO  L495      AbstractCegarLoop]: Abstraction has 236 states and 378 transitions.
[2023-02-16 10:47:19,434 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 6 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10)
[2023-02-16 10:47:19,435 INFO  L276                IsEmpty]: Start isEmpty. Operand 236 states and 378 transitions.
[2023-02-16 10:47:19,442 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 77
[2023-02-16 10:47:19,443 INFO  L187           NwaCegarLoop]: Found error trace
[2023-02-16 10:47:19,443 INFO  L195           NwaCegarLoop]: trace histogram [11, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1]
[2023-02-16 10:47:19,457 INFO  L540       MonitoredProcess]: [MP /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-02-16 10:47:19,647 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-02-16 10:47:19,648 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-02-16 10:47:19,648 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-02-16 10:47:19,649 INFO  L85        PathProgramCache]: Analyzing trace with hash -1796587028, now seen corresponding path program 2 times
[2023-02-16 10:47:19,649 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-02-16 10:47:19,652 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699194646]
[2023-02-16 10:47:19,652 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-02-16 10:47:19,652 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-02-16 10:47:19,663 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:19,878 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2023-02-16 10:47:19,879 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:19,881 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-02-16 10:47:19,891 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:19,892 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2023-02-16 10:47:19,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:19,894 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2023-02-16 10:47:19,895 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:19,896 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31
[2023-02-16 10:47:19,897 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:19,898 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2023-02-16 10:47:19,899 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:19,900 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2023-02-16 10:47:19,901 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:19,916 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2023-02-16 10:47:19,919 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:19,920 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2023-02-16 10:47:19,922 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:19,924 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2023-02-16 10:47:19,926 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:19,929 INFO  L134       CoverageAnalysis]: Checked inductivity of 260 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked.
[2023-02-16 10:47:19,929 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-02-16 10:47:19,929 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699194646]
[2023-02-16 10:47:19,929 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699194646] provided 1 perfect and 0 imperfect interpolant sequences
[2023-02-16 10:47:19,930 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-02-16 10:47:19,930 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-02-16 10:47:19,930 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374943034]
[2023-02-16 10:47:19,930 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-02-16 10:47:19,931 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-02-16 10:47:19,931 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-02-16 10:47:19,932 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-02-16 10:47:19,932 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-02-16 10:47:19,932 INFO  L87              Difference]: Start difference. First operand 236 states and 378 transitions. Second operand  has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-02-16 10:47:20,009 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-02-16 10:47:20,009 INFO  L93              Difference]: Finished difference Result 242 states and 383 transitions.
[2023-02-16 10:47:20,010 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-02-16 10:47:20,010 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 76
[2023-02-16 10:47:20,011 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-02-16 10:47:20,014 INFO  L225             Difference]: With dead ends: 242
[2023-02-16 10:47:20,014 INFO  L226             Difference]: Without dead ends: 240
[2023-02-16 10:47:20,015 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-02-16 10:47:20,017 INFO  L413           NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-02-16 10:47:20,018 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 81 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-02-16 10:47:20,019 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 240 states.
[2023-02-16 10:47:20,062 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240.
[2023-02-16 10:47:20,063 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 240 states, 175 states have (on average 1.4914285714285713) internal successors, (261), 175 states have internal predecessors, (261), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60)
[2023-02-16 10:47:20,068 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 381 transitions.
[2023-02-16 10:47:20,068 INFO  L78                 Accepts]: Start accepts. Automaton has 240 states and 381 transitions. Word has length 76
[2023-02-16 10:47:20,068 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-02-16 10:47:20,069 INFO  L495      AbstractCegarLoop]: Abstraction has 240 states and 381 transitions.
[2023-02-16 10:47:20,069 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-02-16 10:47:20,069 INFO  L276                IsEmpty]: Start isEmpty. Operand 240 states and 381 transitions.
[2023-02-16 10:47:20,071 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 77
[2023-02-16 10:47:20,071 INFO  L187           NwaCegarLoop]: Found error trace
[2023-02-16 10:47:20,071 INFO  L195           NwaCegarLoop]: trace histogram [11, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1]
[2023-02-16 10:47:20,071 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-02-16 10:47:20,071 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-02-16 10:47:20,072 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-02-16 10:47:20,072 INFO  L85        PathProgramCache]: Analyzing trace with hash 1274290426, now seen corresponding path program 2 times
[2023-02-16 10:47:20,072 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-02-16 10:47:20,072 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525920029]
[2023-02-16 10:47:20,072 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-02-16 10:47:20,072 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-02-16 10:47:20,090 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:20,237 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2023-02-16 10:47:20,238 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:20,243 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-02-16 10:47:20,244 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:20,245 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2023-02-16 10:47:20,245 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:20,260 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2023-02-16 10:47:20,261 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:20,262 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31
[2023-02-16 10:47:20,263 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:20,265 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2023-02-16 10:47:20,266 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:20,267 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2023-02-16 10:47:20,268 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:20,269 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2023-02-16 10:47:20,270 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:20,271 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2023-02-16 10:47:20,272 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:20,274 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2023-02-16 10:47:20,276 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-02-16 10:47:20,283 INFO  L134       CoverageAnalysis]: Checked inductivity of 260 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked.
[2023-02-16 10:47:20,284 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-02-16 10:47:20,284 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525920029]
[2023-02-16 10:47:20,284 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525920029] provided 1 perfect and 0 imperfect interpolant sequences
[2023-02-16 10:47:20,284 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-02-16 10:47:20,284 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-02-16 10:47:20,284 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540111262]
[2023-02-16 10:47:20,284 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-02-16 10:47:20,286 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-02-16 10:47:20,286 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-02-16 10:47:20,286 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-02-16 10:47:20,287 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-02-16 10:47:20,287 INFO  L87              Difference]: Start difference. First operand 240 states and 381 transitions. Second operand  has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-02-16 10:47:20,363 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-02-16 10:47:20,364 INFO  L93              Difference]: Finished difference Result 240 states and 381 transitions.
[2023-02-16 10:47:20,364 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-02-16 10:47:20,364 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 76
[2023-02-16 10:47:20,366 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-02-16 10:47:20,366 INFO  L225             Difference]: With dead ends: 240
[2023-02-16 10:47:20,366 INFO  L226             Difference]: Without dead ends: 0
[2023-02-16 10:47:20,369 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-02-16 10:47:20,370 INFO  L413           NwaCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-02-16 10:47:20,370 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 81 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-02-16 10:47:20,373 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2023-02-16 10:47:20,373 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2023-02-16 10:47:20,373 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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)
[2023-02-16 10:47:20,374 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2023-02-16 10:47:20,374 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76
[2023-02-16 10:47:20,374 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-02-16 10:47:20,374 INFO  L495      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2023-02-16 10:47:20,374 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-02-16 10:47:20,374 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2023-02-16 10:47:20,374 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2023-02-16 10:47:20,377 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-02-16 10:47:20,377 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2023-02-16 10:47:20,379 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2023-02-16 10:47:20,895 INFO  L899   garLoopResultBuilder]: For program point L33(lines 33 41) no Hoare annotation was computed.
[2023-02-16 10:47:20,896 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2023-02-16 10:47:20,896 INFO  L895   garLoopResultBuilder]: At program point L33-1(lines 18 43) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 60) (<= |ULTIMATE.start_main_~n~0#1| 60))
[2023-02-16 10:47:20,896 INFO  L895   garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (< 59 |ULTIMATE.start_main_~m~0#1|) (<= |ULTIMATE.start_main_~m~0#1| 60) (<= |ULTIMATE.start_main_~n~0#1| 60))
[2023-02-16 10:47:20,896 INFO  L899   garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed.
[2023-02-16 10:47:20,897 INFO  L899   garLoopResultBuilder]: For program point L23(lines 23 29) no Hoare annotation was computed.
[2023-02-16 10:47:20,897 INFO  L895   garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 60) (<= |ULTIMATE.start_main_~n~0#1| 60))
[2023-02-16 10:47:20,897 INFO  L895   garLoopResultBuilder]: At program point L19-1(line 19) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 60) (<= |ULTIMATE.start_main_~n~0#1| 60))
[2023-02-16 10:47:20,897 INFO  L899   garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed.
[2023-02-16 10:47:20,897 INFO  L895   garLoopResultBuilder]: At program point main_returnLabel#1(lines 15 45) the Hoare annotation is: false
[2023-02-16 10:47:20,897 INFO  L895   garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 60) (<= |ULTIMATE.start_main_~n~0#1| 60) (< 59 |ULTIMATE.start_main_~n~0#1|))
[2023-02-16 10:47:20,897 INFO  L899   garLoopResultBuilder]: For program point L38-1(line 38) no Hoare annotation was computed.
[2023-02-16 10:47:20,898 INFO  L899   garLoopResultBuilder]: For program point L34(lines 34 40) no Hoare annotation was computed.
[2023-02-16 10:47:20,898 INFO  L899   garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed.
[2023-02-16 10:47:20,898 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2023-02-16 10:47:20,898 INFO  L899   garLoopResultBuilder]: For program point L22(lines 22 30) no Hoare annotation was computed.
[2023-02-16 10:47:20,898 INFO  L899   garLoopResultBuilder]: For program point L20(lines 18 43) no Hoare annotation was computed.
[2023-02-16 10:47:20,898 INFO  L899   garLoopResultBuilder]: For program point L18-2(lines 18 43) no Hoare annotation was computed.
[2023-02-16 10:47:20,898 INFO  L899   garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed.
[2023-02-16 10:47:20,898 INFO  L899   garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed.
[2023-02-16 10:47:20,899 INFO  L899   garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed.
[2023-02-16 10:47:20,899 INFO  L899   garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed.
[2023-02-16 10:47:20,899 INFO  L902   garLoopResultBuilder]: At program point $Ultimate##0(line 13) the Hoare annotation is: true
[2023-02-16 10:47:20,899 INFO  L899   garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed.
[2023-02-16 10:47:20,903 INFO  L445         BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1]
[2023-02-16 10:47:20,905 INFO  L178   ceAbstractionStarter]: Computing trace abstraction results
[2023-02-16 10:47:20,930 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 10:47:20 BoogieIcfgContainer
[2023-02-16 10:47:20,930 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-02-16 10:47:20,931 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2023-02-16 10:47:20,931 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2023-02-16 10:47:20,931 INFO  L275        PluginConnector]: Witness Printer initialized
[2023-02-16 10:47:20,931 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 10:47:16" (3/4) ...
[2023-02-16 10:47:20,934 INFO  L137         WitnessPrinter]: Generating witness for correct program
[2023-02-16 10:47:20,938 INFO  L361     RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert
[2023-02-16 10:47:20,951 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges
[2023-02-16 10:47:20,952 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2023-02-16 10:47:20,952 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2023-02-16 10:47:20,952 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2023-02-16 10:47:21,011 INFO  L141         WitnessManager]: Wrote witness to /mnt/thread-witnesses/replication/UAutomizer-linux/witness.graphml
[2023-02-16 10:47:21,012 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-02-16 10:47:21,012 INFO  L158              Benchmark]: Toolchain (without parser) took 5520.95ms. Allocated memory is still 43.9MB. Free memory was 15.4MB in the beginning and 19.1MB in the end (delta: -3.7MB). Peak memory consumption was 7.6MB. Max. memory is 15.6GB.
[2023-02-16 10:47:21,013 INFO  L158              Benchmark]: CDTParser took 0.44ms. Allocated memory is still 33.1MB. Free memory was 14.2MB in the beginning and 14.1MB in the end (delta: 28.0kB). Peak memory consumption was 28.0kB. Max. memory is 15.6GB.
[2023-02-16 10:47:21,013 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 237.13ms. Allocated memory is still 43.9MB. Free memory was 15.3MB in the beginning and 16.6MB in the end (delta: -1.3MB). Peak memory consumption was 2.7MB. Max. memory is 15.6GB.
[2023-02-16 10:47:21,013 INFO  L158              Benchmark]: Boogie Procedure Inliner took 43.83ms. Allocated memory is still 43.9MB. Free memory was 16.6MB in the beginning and 15.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.5MB. Max. memory is 15.6GB.
[2023-02-16 10:47:21,014 INFO  L158              Benchmark]: Boogie Preprocessor took 31.22ms. Allocated memory is still 43.9MB. Free memory was 15.2MB in the beginning and 14.2MB in the end (delta: 999.1kB). Peak memory consumption was 999.1kB. Max. memory is 15.6GB.
[2023-02-16 10:47:21,014 INFO  L158              Benchmark]: RCFGBuilder took 510.15ms. Allocated memory is still 43.9MB. Free memory was 14.0MB in the beginning and 16.3MB in the end (delta: -2.3MB). Peak memory consumption was 2.0MB. Max. memory is 15.6GB.
[2023-02-16 10:47:21,014 INFO  L158              Benchmark]: TraceAbstraction took 4591.87ms. Allocated memory is still 43.9MB. Free memory was 15.6MB in the beginning and 9.5MB in the end (delta: 6.1MB). Peak memory consumption was 7.9MB. Max. memory is 15.6GB.
[2023-02-16 10:47:21,015 INFO  L158              Benchmark]: Witness Printer took 81.19ms. Allocated memory is still 43.9MB. Free memory was 9.5MB in the beginning and 19.1MB in the end (delta: -9.6MB). Peak memory consumption was 1.7MB. Max. memory is 15.6GB.
[2023-02-16 10:47:21,016 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.44ms. Allocated memory is still 33.1MB. Free memory was 14.2MB in the beginning and 14.1MB in the end (delta: 28.0kB). Peak memory consumption was 28.0kB. Max. memory is 15.6GB.
 * CACSL2BoogieTranslator took 237.13ms. Allocated memory is still 43.9MB. Free memory was 15.3MB in the beginning and 16.6MB in the end (delta: -1.3MB). Peak memory consumption was 2.7MB. Max. memory is 15.6GB.
 * Boogie Procedure Inliner took 43.83ms. Allocated memory is still 43.9MB. Free memory was 16.6MB in the beginning and 15.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.5MB. Max. memory is 15.6GB.
 * Boogie Preprocessor took 31.22ms. Allocated memory is still 43.9MB. Free memory was 15.2MB in the beginning and 14.2MB in the end (delta: 999.1kB). Peak memory consumption was 999.1kB. Max. memory is 15.6GB.
 * RCFGBuilder took 510.15ms. Allocated memory is still 43.9MB. Free memory was 14.0MB in the beginning and 16.3MB in the end (delta: -2.3MB). Peak memory consumption was 2.0MB. Max. memory is 15.6GB.
 * TraceAbstraction took 4591.87ms. Allocated memory is still 43.9MB. Free memory was 15.6MB in the beginning and 9.5MB in the end (delta: 6.1MB). Peak memory consumption was 7.9MB. Max. memory is 15.6GB.
 * Witness Printer took 81.19ms. Allocated memory is still 43.9MB. Free memory was 9.5MB in the beginning and 19.1MB in the end (delta: -9.6MB). Peak memory consumption was 1.7MB. Max. memory is 15.6GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - PositiveResult [Line: 13]: call to reach_error is unreachable
    For all program executions holds that call to reach_error is unreachable at this location
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 8, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 180 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 159 mSDsluCounter, 624 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 392 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 178 IncrementalHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 232 mSDtfsCounter, 178 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 240 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240occurred in iteration=7, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 120 PreInvPairs, 205 NumberOfFragments, 43 HoareAnnotationTreeSize, 120 FomulaSimplifications, 384 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 589 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 347 NumberOfCodeBlocks, 347 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 403 ConstructedInterpolants, 0 QuantifiedInterpolants, 641 SizeOfPredicates, 0 NumberOfNonLiveVariables, 162 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 730/766 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
  - AllSpecificationsHoldResult: All specifications hold
    1 specifications checked. All of them hold
  - InvariantResult [Line: 15]: Loop Invariant
    Derived loop invariant: 0
  - InvariantResult [Line: 18]: Loop Invariant
    Derived loop invariant: m <= 60 && n <= 60
RESULT: Ultimate proved your program to be correct!
[2023-02-16 10:47:21,045 INFO  L540       MonitoredProcess]: [MP /mnt/thread-witnesses/replication/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---

Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE
