./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-programs/Problem101_label20.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version c3fed411
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-programs/Problem101_label20.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29d6a971fe1c57642985ba3a8a9a876e2745ba1ba1e8ec89c36172a2a1c9e3b4
--- Real Ultimate output ---
This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41
[2021-12-17 05:34:16,494 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-12-17 05:34:16,496 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-17 05:34:16,542 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-17 05:34:16,542 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-17 05:34:16,545 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-17 05:34:16,546 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-17 05:34:16,548 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-17 05:34:16,549 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-17 05:34:16,556 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-17 05:34:16,556 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-12-17 05:34:16,557 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-17 05:34:16,557 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-17 05:34:16,558 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-17 05:34:16,558 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-17 05:34:16,559 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-17 05:34:16,560 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-17 05:34:16,560 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-17 05:34:16,561 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-17 05:34:16,565 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-17 05:34:16,567 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-17 05:34:16,567 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-17 05:34:16,569 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-12-17 05:34:16,570 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-17 05:34:16,574 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-17 05:34:16,575 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-17 05:34:16,575 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-17 05:34:16,576 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-17 05:34:16,576 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-17 05:34:16,577 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-17 05:34:16,577 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-17 05:34:16,578 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-17 05:34:16,579 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-17 05:34:16,580 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-17 05:34:16,581 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-17 05:34:16,581 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-17 05:34:16,581 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-17 05:34:16,582 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-17 05:34:16,582 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-17 05:34:16,582 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-17 05:34:16,583 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-12-17 05:34:16,584 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-17 05:34:16,609 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-12-17 05:34:16,609 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-17 05:34:16,610 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-17 05:34:16,610 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-17 05:34:16,611 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-17 05:34:16,611 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-17 05:34:16,611 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-17 05:34:16,612 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-12-17 05:34:16,612 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-12-17 05:34:16,612 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-17 05:34:16,613 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-12-17 05:34:16,613 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-12-17 05:34:16,613 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-12-17 05:34:16,613 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-12-17 05:34:16,613 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-12-17 05:34:16,614 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-17 05:34:16,614 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-12-17 05:34:16,614 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-12-17 05:34:16,614 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-12-17 05:34:16,614 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-12-17 05:34:16,614 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-12-17 05:34:16,615 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-17 05:34:16,615 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-12-17 05:34:16,615 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-12-17 05:34:16,615 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-17 05:34:16,615 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-17 05:34:16,615 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-12-17 05:34:16,616 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-17 05:34:16,616 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-12-17 05:34:16,616 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-17 05:34:16,616 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-12-17 05:34:16,616 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-17 05:34:16,617 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-17 05:34:16,617 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-12-17 05:34:16,617 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29d6a971fe1c57642985ba3a8a9a876e2745ba1ba1e8ec89c36172a2a1c9e3b4
[2021-12-17 05:34:16,827 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-17 05:34:16,846 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-17 05:34:16,848 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-17 05:34:16,849 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-12-17 05:34:16,849 INFO  L275        PluginConnector]: CDTParser initialized
[2021-12-17 05:34:16,850 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-programs/Problem101_label20.c
[2021-12-17 05:34:16,909 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/088bf641f/ca20131c515c48b2a18ce51140deaa10/FLAG3f6e58ca0
[2021-12-17 05:34:18,574 INFO  L306              CDTParser]: Found 1 translation units.
[2021-12-17 05:34:18,574 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-programs/Problem101_label20.c
[2021-12-17 05:34:18,731 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/088bf641f/ca20131c515c48b2a18ce51140deaa10/FLAG3f6e58ca0
[2021-12-17 05:34:18,951 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/088bf641f/ca20131c515c48b2a18ce51140deaa10
[2021-12-17 05:34:18,953 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-17 05:34:18,953 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-17 05:34:18,954 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-17 05:34:18,954 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-17 05:34:18,956 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-17 05:34:18,957 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 05:34:18" (1/1) ...
[2021-12-17 05:34:18,964 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a198463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:34:18, skipping insertion in model container
[2021-12-17 05:34:18,964 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 05:34:18" (1/1) ...
[2021-12-17 05:34:18,968 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-12-17 05:34:19,492 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-12-17 05:34:26,144 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-programs/Problem101_label20.c[2769356,2769369]
[2021-12-17 05:34:26,194 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-17 05:34:26,201 INFO  L203         MainTranslator]: Completed pre-run
[2021-12-17 05:34:30,250 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-programs/Problem101_label20.c[2769356,2769369]
[2021-12-17 05:34:30,258 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-17 05:34:30,710 INFO  L208         MainTranslator]: Completed translation
[2021-12-17 05:34:30,711 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:34:30 WrapperNode
[2021-12-17 05:34:30,711 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-17 05:34:30,711 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-17 05:34:30,711 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-17 05:34:30,711 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-17 05:34:30,716 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:34:30" (1/1) ...
[2021-12-17 05:34:31,321 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:34:30" (1/1) ...
[2021-12-17 05:34:32,794 INFO  L137                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83780
[2021-12-17 05:34:32,794 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-17 05:34:32,795 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-17 05:34:32,795 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-17 05:34:32,795 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-12-17 05:34:32,801 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:34:30" (1/1) ...
[2021-12-17 05:34:32,801 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:34:30" (1/1) ...
[2021-12-17 05:34:33,067 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:34:30" (1/1) ...
[2021-12-17 05:34:33,068 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:34:30" (1/1) ...
[2021-12-17 05:34:33,924 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:34:30" (1/1) ...
[2021-12-17 05:34:34,061 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:34:30" (1/1) ...
[2021-12-17 05:34:34,223 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:34:30" (1/1) ...
[2021-12-17 05:34:34,634 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-17 05:34:34,635 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-17 05:34:34,636 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-12-17 05:34:34,636 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-12-17 05:34:34,648 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:34:30" (1/1) ...
[2021-12-17 05:34:34,653 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-17 05:34:34,668 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-17 05:34:34,681 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-12-17 05:34:34,688 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-12-17 05:34:34,708 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-17 05:34:34,709 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-17 05:34:34,709 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-17 05:34:34,709 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-17 05:34:34,810 INFO  L236             CfgBuilder]: Building ICFG
[2021-12-17 05:34:34,811 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-17 05:35:01,403 INFO  L277             CfgBuilder]: Performing block encoding
[2021-12-17 05:35:01,445 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-17 05:35:01,446 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-17 05:35:01,457 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:35:01 BoogieIcfgContainer
[2021-12-17 05:35:01,457 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-17 05:35:01,459 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-17 05:35:01,459 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-12-17 05:35:01,462 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-12-17 05:35:01,463 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 05:34:18" (1/3) ...
[2021-12-17 05:35:01,463 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f34877e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:35:01, skipping insertion in model container
[2021-12-17 05:35:01,463 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:34:30" (2/3) ...
[2021-12-17 05:35:01,464 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f34877e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:35:01, skipping insertion in model container
[2021-12-17 05:35:01,464 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:35:01" (3/3) ...
[2021-12-17 05:35:01,465 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem101_label20.c
[2021-12-17 05:35:01,468 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-17 05:35:01,468 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-17 05:35:01,533 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-17 05:35:01,539 INFO  L339      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, mLoopAccelerationTechnique=FAST_UPR
[2021-12-17 05:35:01,539 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-17 05:35:01,654 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 05:35:02,473 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10104
[2021-12-17 05:35:02,473 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-17 05:35:02,479 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-17 05:35:02,480 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 05:35:02,488 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 05:35:02,492 INFO  L85        PathProgramCache]: Analyzing trace with hash -1554709503, now seen corresponding path program 1 times
[2021-12-17 05:35:02,497 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 05:35:02,497 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030449865]
[2021-12-17 05:35:02,499 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 05:35:02,500 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 05:35:04,314 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 05:35:21,294 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 05:35:21,295 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 05:35:21,295 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030449865]
[2021-12-17 05:35:21,295 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030449865] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-17 05:35:21,296 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-17 05:35:21,296 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-17 05:35:21,298 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754638003]
[2021-12-17 05:35:21,298 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-17 05:35:21,309 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-17 05:35:21,310 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 05:35:21,327 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-17 05:35:21,328 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-17 05:35:21,350 INFO  L87              Difference]: Start difference. First operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 3367.6666666666665) internal successors, (10103), 2 states have internal predecessors, (10103), 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)
[2021-12-17 05:35:49,960 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 05:35:49,961 INFO  L93              Difference]: Finished difference Result 30705 states and 61134 transitions.
[2021-12-17 05:35:49,965 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-17 05:35:49,969 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3367.6666666666665) internal successors, (10103), 2 states have internal predecessors, (10103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10103
[2021-12-17 05:35:49,984 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 05:35:50,080 INFO  L225             Difference]: With dead ends: 30705
[2021-12-17 05:35:50,080 INFO  L226             Difference]: Without dead ends: 20384
[2021-12-17 05:35:50,096 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-17 05:35:50,100 INFO  L933         BasicCegarLoop]: 3749 mSDtfsCounter, 1310 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 29786 mSolverCounterSat, 14106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 3802 SdHoareTripleChecker+Invalid, 43892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14106 IncrementalHoareTripleChecker+Valid, 29786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time
[2021-12-17 05:35:50,101 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1310 Valid, 3802 Invalid, 43892 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14106 Valid, 29786 Invalid, 0 Unknown, 0 Unchecked, 28.0s Time]
[2021-12-17 05:35:50,134 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20384 states.
[2021-12-17 05:35:50,456 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20384 to 20384.
[2021-12-17 05:35:50,491 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20384 states, 20383 states have (on average 1.80954717166266) internal successors, (36884), 20383 states have internal predecessors, (36884), 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)
[2021-12-17 05:35:50,530 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20384 states to 20384 states and 36884 transitions.
[2021-12-17 05:35:50,531 INFO  L78                 Accepts]: Start accepts. Automaton has 20384 states and 36884 transitions. Word has length 10103
[2021-12-17 05:35:50,543 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-17 05:35:50,544 INFO  L470      AbstractCegarLoop]: Abstraction has 20384 states and 36884 transitions.
[2021-12-17 05:35:50,546 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3367.6666666666665) internal successors, (10103), 2 states have internal predecessors, (10103), 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)
[2021-12-17 05:35:50,547 INFO  L276                IsEmpty]: Start isEmpty. Operand 20384 states and 36884 transitions.
[2021-12-17 05:35:51,202 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10111
[2021-12-17 05:35:51,203 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-17 05:35:51,206 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 05:35:51,207 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-17 05:35:51,207 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 05:35:51,208 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 05:35:51,210 INFO  L85        PathProgramCache]: Analyzing trace with hash 158577694, now seen corresponding path program 1 times
[2021-12-17 05:35:51,210 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 05:35:51,210 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706884866]
[2021-12-17 05:35:51,212 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 05:35:51,212 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 05:35:52,043 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 05:36:00,767 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 05:36:00,768 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 05:36:00,768 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706884866]
[2021-12-17 05:36:00,768 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706884866] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-17 05:36:00,768 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-17 05:36:00,769 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-17 05:36:00,769 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793413583]
[2021-12-17 05:36:00,770 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-17 05:36:00,777 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-17 05:36:00,778 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 05:36:00,778 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-17 05:36:00,778 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-17 05:36:00,782 INFO  L87              Difference]: Start difference. First operand 20384 states and 36884 transitions. Second operand  has 3 states, 3 states have (on average 3370.0) internal successors, (10110), 2 states have internal predecessors, (10110), 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)
[2021-12-17 05:36:27,867 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 05:36:27,867 INFO  L93              Difference]: Finished difference Result 61146 states and 110647 transitions.
[2021-12-17 05:36:27,867 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-17 05:36:27,870 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3370.0) internal successors, (10110), 2 states have internal predecessors, (10110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10110
[2021-12-17 05:36:27,870 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 05:36:27,966 INFO  L225             Difference]: With dead ends: 61146
[2021-12-17 05:36:27,966 INFO  L226             Difference]: Without dead ends: 40764
[2021-12-17 05:36:28,000 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-17 05:36:28,001 INFO  L933         BasicCegarLoop]: 5067 mSDtfsCounter, 12061 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 33507 mSolverCounterSat, 7005 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12061 SdHoareTripleChecker+Valid, 5117 SdHoareTripleChecker+Invalid, 40512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7005 IncrementalHoareTripleChecker+Valid, 33507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.5s IncrementalHoareTripleChecker+Time
[2021-12-17 05:36:28,002 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [12061 Valid, 5117 Invalid, 40512 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7005 Valid, 33507 Invalid, 0 Unknown, 0 Unchecked, 26.5s Time]
[2021-12-17 05:36:28,044 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40764 states.
[2021-12-17 05:36:28,411 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 40764.
[2021-12-17 05:36:28,457 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40764 states, 40763 states have (on average 1.610136643524765) internal successors, (65634), 40763 states have internal predecessors, (65634), 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)
[2021-12-17 05:36:28,504 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40764 states to 40764 states and 65634 transitions.
[2021-12-17 05:36:28,505 INFO  L78                 Accepts]: Start accepts. Automaton has 40764 states and 65634 transitions. Word has length 10110
[2021-12-17 05:36:28,506 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-17 05:36:28,506 INFO  L470      AbstractCegarLoop]: Abstraction has 40764 states and 65634 transitions.
[2021-12-17 05:36:28,509 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3370.0) internal successors, (10110), 2 states have internal predecessors, (10110), 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)
[2021-12-17 05:36:28,509 INFO  L276                IsEmpty]: Start isEmpty. Operand 40764 states and 65634 transitions.
[2021-12-17 05:36:29,148 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10128
[2021-12-17 05:36:29,148 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-17 05:36:29,152 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 05:36:29,152 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-17 05:36:29,152 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 05:36:29,154 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 05:36:29,156 INFO  L85        PathProgramCache]: Analyzing trace with hash -106479448, now seen corresponding path program 1 times
[2021-12-17 05:36:29,156 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 05:36:29,156 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862071314]
[2021-12-17 05:36:29,157 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 05:36:29,157 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 05:36:29,834 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 05:36:37,467 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2021-12-17 05:36:37,468 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 05:36:37,468 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862071314]
[2021-12-17 05:36:37,468 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862071314] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-17 05:36:37,468 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-17 05:36:37,469 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-17 05:36:37,469 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486393829]
[2021-12-17 05:36:37,469 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-17 05:36:37,477 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-17 05:36:37,477 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 05:36:37,477 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-17 05:36:37,477 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-17 05:36:37,480 INFO  L87              Difference]: Start difference. First operand 40764 states and 65634 transitions. Second operand  has 3 states, 3 states have (on average 3369.6666666666665) internal successors, (10109), 2 states have internal predecessors, (10109), 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)
[2021-12-17 05:37:04,935 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 05:37:04,935 INFO  L93              Difference]: Finished difference Result 122286 states and 196897 transitions.
[2021-12-17 05:37:04,935 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-17 05:37:04,937 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3369.6666666666665) internal successors, (10109), 2 states have internal predecessors, (10109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10127
[2021-12-17 05:37:04,937 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 05:37:05,059 INFO  L225             Difference]: With dead ends: 122286
[2021-12-17 05:37:05,060 INFO  L226             Difference]: Without dead ends: 81524
[2021-12-17 05:37:05,082 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-17 05:37:05,086 INFO  L933         BasicCegarLoop]: 5085 mSDtfsCounter, 13140 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29481 mSolverCounterSat, 11039 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13140 SdHoareTripleChecker+Valid, 5134 SdHoareTripleChecker+Invalid, 40520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11039 IncrementalHoareTripleChecker+Valid, 29481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.6s IncrementalHoareTripleChecker+Time
[2021-12-17 05:37:05,086 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13140 Valid, 5134 Invalid, 40520 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11039 Valid, 29481 Invalid, 0 Unknown, 0 Unchecked, 26.6s Time]
[2021-12-17 05:37:05,132 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81524 states.
[2021-12-17 05:37:05,745 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81524 to 81524.
[2021-12-17 05:37:05,813 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81524 states, 81523 states have (on average 1.4610478024606552) internal successors, (119109), 81523 states have internal predecessors, (119109), 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)
[2021-12-17 05:37:05,911 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81524 states to 81524 states and 119109 transitions.
[2021-12-17 05:37:05,912 INFO  L78                 Accepts]: Start accepts. Automaton has 81524 states and 119109 transitions. Word has length 10127
[2021-12-17 05:37:05,913 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-17 05:37:05,913 INFO  L470      AbstractCegarLoop]: Abstraction has 81524 states and 119109 transitions.
[2021-12-17 05:37:05,915 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3369.6666666666665) internal successors, (10109), 2 states have internal predecessors, (10109), 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)
[2021-12-17 05:37:05,915 INFO  L276                IsEmpty]: Start isEmpty. Operand 81524 states and 119109 transitions.
[2021-12-17 05:37:06,698 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10145
[2021-12-17 05:37:06,699 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-17 05:37:06,702 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-17 05:37:06,702 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-12-17 05:37:06,702 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 05:37:06,703 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 05:37:06,704 INFO  L85        PathProgramCache]: Analyzing trace with hash -1579676333, now seen corresponding path program 1 times
[2021-12-17 05:37:06,705 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 05:37:06,705 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294118098]
[2021-12-17 05:37:06,705 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 05:37:06,706 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms